KR840000890Y1 - Car with motor power - Google Patents

Abstract

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Description

Prime mover

1 is a side view of the present invention.

2 is a plan view of the present invention.

3 is an enlarged longitudinal sectional view showing the ribs of the vehicle.

4 is an enlarged plan view showing a front portion of a vehicle.

5 is a partially enlarged longitudinal sectional view of FIG.

6 is an enlarged cross-sectional view showing the front suspension of the vehicle.

7 is an enlarged side view of the rear portion of the vehicle including the recessed section;

8 is a cross-sectional view taken along line 8-8 of FIG.

FIG. 9 is a view similar to FIG. 8 showing a deformation state of the rear axle support portion of FIG.

The present invention relates to a vehicle equipped with a prime mover with improved rear wheel suspension and engine arrangement.

Therefore, it is an object of the present invention to provide a vehicle with a prime mover extending two leaf springs rearward from both sides of the vehicle ribs under the driver's seat so that the rear free end thereof supports the rear axle of the vehicle. Thus, according to the present invention, the two rear wheels are supported by two respective leaf springs similar in shape to the trail arms, and the members suspending the two rear wheels simultaneously act as elastic shock absorbers.

Furthermore, the two rear wheels described above are supported by the free end of the above-mentioned leaf spring, the vehicle with the prime mover of the present invention has excellent cushioning effect. And furthermore, the two rear wheels are reasonably suspended on small, lightweight ribs with minimal components, so the function of the rear suspension is fully and effectively performed.

Furthermore, according to the present invention, since the two leaf springs are formed to extend rearward from both sides of the vehicle ribs, the above-described rib length can be shortened as much as possible, and sufficient axial distance can be provided between the front and rear vehicles. On the one hand, the ribs can be narrowed. In addition, a sufficient wheel distance can be provided between the two rear wheels, so that a small and simple vehicle with two rear wheels ensures stability and comfortable riding.

Another object of the present invention is to provide a vehicle equipped with a prime mover with a reasonable and reliable motor since it is arranged in a limited space under the ribs under the driver's seat between the leaf springs of the engine without reducing the size of the vehicle. will be.

Another object of the present invention is to support the above-mentioned engine on the ribs and to support the rear axle with the leaf spring, so that the center of gravity of the engine is in the front part, so that the engine installation on the rib is placed in the longitudinal center of the leaf spring. And a prime mover with the engine positioned at the longitudinal and transverse centers between the rear wheels to ensure reliable, rational support of the engine and a lower center of gravity of the vehicle, ensuring that the steering stability of the vehicle on the turn is simply guaranteed to support the engine. To provide.

Another object of the present invention is a rib of the vehicle described above has a press-formed rear portion opened downward to form a groove, and both sides of the rear portion of the rib are curved sideways to form a flange to right and left leaf spring The base of the pipe is mounted on the flange, and the engine is placed in the space of the reverse groove, making the space use of the vehicle remarkably favorable, and the protection and cooling of the engine, along with the rigidity of the frame, improved to an optimum level It is to provide a vehicle with a prime mover.

Other objects and advantages of the present invention will become apparent from one suitable embodiment.

1 and 2 are side and plan views respectively showing the basic structure of a vehicle according to the present invention. First, the arrangement of the vehicle of the present invention will be described in detail with reference to the drawings.

Reference numeral 2 denotes a rib extending in the longitudinal direction of the vehicle 1. In front of the ribs 2, a pair of front wheels 3 and 3 serving as steering wheels are installed, and in the rear, a pair of rear wheels 4 and 4 serving as driving wheels are installed. That is, the vehicle of the present invention is a four-wheeled vehicle having two front wheels and a rear wheel. The ribs 2 have installed seats used by the driver in the rear part of the center, i.e., in the central part in a generally longitudinal direction.

The seat 5 is formed to have a width substantially equal to the width of the rib 2. The steering shaft 6 which extends inclined rearward is provided in the front part of the rib 2, and the center part of the width direction (or horizontal direction). The shaft 6 is mounted on the upper end of the inverted V-stay 7, which has lower ends 7a and 7a fixed to both ends of the ribs, and is pivotally attached to the support member 8. do. On the upper end of the shaft 6, a steering rod 9 constituting a steering wheel for steering operation is mounted.

In addition, an intermediate portion between the steering shaft 6 and the seat 5 of the ribs 2 is formed with a bottom 2d formed of a width substantially the same as the width of the seat 5 to be a resting place for the driver's feet. The overall structure of the ribs 2 is better represented in FIGS. 3 and 6. The ribs 2 are made of steel sheet press-formed in the shape of a box cross section as shown in FIG. 6, and also include a horizontal portion 2a, a horizontal intermediate portion 2b, and an inclined connecting portion 2c extending therebetween. It consists of.

A plurality of spacing members (2e) are installed in the ribs 2 at vertical intervals to improve hardness and strength. Furthermore, the rib 2 is formed open at its tip 2f. The anterior portion 2a of the rib 2 is one step higher than the intermediate portion 2b, as is clearly indicated in FIG. As shown in FIG. 6, the cross-sectional phenomenon of the front portion 2a is formed such that the upper portion 2g has the upper portion 2h, 2h having the highest central portion and the flat downward curvature. The front portion 2a has a lower portion 2i located at the lowest horizontal plane, and the side walls 2k and 2k of the inclined upwardly lower bilateral side portions 2j and 2j are curved. It is formed to coincide with the parts 2h and 2h.

On the one hand, the rib 2 has a rear portion 2L which is inclined rearwardly upward from the rear end of the middle portion 2b. The rear part 2L has the lower and second half opened at 2m and 2n. As a result, the rear portion 2L is opened downward as shown in FIG. 8 to form the space 2p.

A pair of L-shaped struts 10 and 10 (shown in FIG. 7) are generally disposed on both sides of the inclined rear portion 2L of the rib 2 configured as described above. Each of the posts described above has a horizontal portion 10a connected to an upper portion of the rear portion 2L and a curved support portion 10b connected to an inclined portion of the rear portion 2L. The seat 5 is provided over the props 10 and 10. The fuel tank 11 is installed under the seat 5 between the struts 10 and 10. The fuel tank 11 has a cap 11a located behind the seat 5, which cap 11a attaches to the inlet of the tank 11.

As shown in FIG. 4 and FIG. 6, the leaf spring 12 extending in the width direction is provided on the front portion 2a of the rib 2 between the lower end of the steering shaft 6 and the support 7. The other leaf spring 13 is installed on the lower side of the front portion 2a in parallel with the spring 12. Thus, the upper and lower parallel leaf springs 12 and 13 are arranged while sandwiching the front portion 2a of the rib 2 in a sandwich shape to form a new space. Furthermore, the leaf springs 12 and 13 described above have horizontal end portions 12a and 13a extending from the right and left sides of the rib 2.

The leaf springs 12 and 13 are connected to the upper and lower portions 2g and 2i of the front portion 2a to the support plates 14 and 14 using bolts and nuts 15. While the spring 12 is connected to the upper side, the spring 13 is connected to the lower side. The leaf springs 12 and 13 are vertically spaced, and both end portions 12a and 13a on which the shortest mounting portions 12b and 13b with collars 16 and 16 are attached are placed. Have. The king pin 17 is inserted into the upper and lower collars 16 and 16. A pair of bush-shaped rubber 18 formed between the upper and lower distal portions 17a and 17a of the pin 17 and the upper and lower sides of the collar 16 in the form of a truncated cone; (18) is installed.

Then, the washer 19 is attached to the outer end surface of the rubber 18, and the nut 20 is screwed to the upper and lower end portions in the axial direction of the pin 17 to the screw groove portions 17b and 17b. Fix it by fixing it. As a result, the rubbers 18 and 18 are pressed in the axial direction of the king pin 17, so that the pins 17 are both mounting portions 12b and 13b of the upper and lower leaf springs 12 and 13, respectively. Is connected to.

Each king pin 17 is provided with a bush 21 is connected to the knuckle 22. The knuckle 22 is fixed to the front axle 23 supporting the hubs 3a of the front wheels 3 and 3 via the bearing 24.

As described above, the front wheels (3), (3) is installed on both sides of the rib front portion (2a) and elastic members (18), (to the curved end portions of the upper and lower leaf springs (12), (13) 18). The leaf springs 12 and 13 described above act as suspension members for the right and left tram wheels 3 and 3. Therefore, for the recoil transmitted from the road to the front wheels (3) and (3), the sock end portions 12a, 13a of the upper and lower leaf springs 12, 13 extending laterally from the ribs 2; ) Are parallel to each other and the ball is moved up and down, so that the buffer (3), (3) in response to the operation of the buffer. The large upward bent portion of the end of the lower leaf spring 13 is adjusted to the inclined portion 2i, whereby the downwardly curved portion of the end of the upper leaf spring 12 is adjusted by the curved portion 2h.

More specifically, the bending motion generated by the vertical buffering action of the leaf springs 12 and 13 is controlled by both sides of the front portion 2a of the rib 2, so that the leaf springs 12 and 13 Excess strain of) is prevented because both sides 2h and 2j act to stop.

Since the king pin 17 is connected to the leaf springs 12 and 13 via the elastic member 18, even the slight vibration of the front wheel generated by the unevenness of the road is effectively absorbed and the action of the elastic member 18. It is attenuated by the vibration transmission to the ribs 2 so as to be restricted and reduced to make the ride comfortable. In addition, the elastic member 18 is installed in a pair of combinations at the end of the king pin 17, and the collar 16 is briefly opposed to face in the axial direction. As a result, the elasticity of the elastic member 18 can be changed by adjusting the tightening force of the nut 20, it is possible to easily adjust the tightening simply set the suitable deterioration in advance. The cambers defined in the front wheels 3 and 3 are retained because the king pins 17 are supported at the upper and lower ends.

In more detail, the camber returns to the normal angle by the action of the elastic member 18 even if diarrhea changes. When the camber changes, the camber can be maintained at a normal level because it is absorbed by the deformation of the elastic member 18. The through openings 2q and 2r are formed in the upper and lower portions 2g and 2i of the one front and the rib front portion 2a and behind the leaf springs 12 and 13 described above. Further, as better shown in FIGS. 4 and 5, the bracket 25 extending obliquely upward and upward is fixed to the spaced member 2e facing the opening 2q. The bracket 25 supports the lower end 6a of the steering shaft 6 to pivot with the collar 26 and extends through the rib anterior portion 2a to the lower extension of the abutment 6a. The lower part of which is projected from the lower opening 2r. The pair of support rods 29 and 29 are connected to the knuckles 22 described above with the connector 30 and 30.

The two end fittings 28, 30 alternately support the movement of the end portions of the leaf springs 12, 13 caused by the movement of the front wheels 3, 3, with the support rods 29, 29 It is configured to act universal joint acting in response to the vertical movement of the knuckle 22. The arm 27 is generally accommodated in the front portion 2a of the rib 2 so that the support rod 29 and the connector 30 are located behind the leaf spring 13. As a result, the steering mechanism as described above has a front portion which is protected by placing the leaf spring and the other member in front. The suspension cover configured as described above can also be used in a vehicle having a single front wheel. The suspension system for the rear wheels and the engine and arrangement installation of the vehicle will be described as follows. As shown in the figure, in the embodiment of the present invention, four wheels of two front wheels and two rear wheels are installed. As shown in Figs. 7 and 8, a pair of flanges 31 and 31 are formed at the lower ends of both side walls of the lower part under the seat 5 of the rib 2 rear part 2L.

The flanges 31 and 31 are press-molded into the ribs and a unitary body so as to extend horizontally outward from the lower ends of the walls 2s and 2s on both sides of the seat 5. The base or end portions 32a and 32a of the pair of leaf springs 32 and 32 are connected to the flanges 31 and 31 with bolts and nuts 33.

As shown in FIG. 7 and FIG. 8, the leaf springs 32, 32 extend rearward to extend their distal end 32a below both sides of the flange 31 and the seat 5 as described above. To form a narrow plate. The right and left leaf springs 32 and 32 are spaced apart in the width direction of the ribs 2, and at the rear end of the ribs 2, the lengths reaching the ribs 2 also extend in parallel to the rear. Each leaf spring 32 has a rear end that forms a free end that is wound in an annular shape to form the rear axle bearing portion 32b. Thus, the transverse extension of the leaf springs 32 and 32 suppresses protruding slightly from both sides of the ribs 2. The rear axle 34 acting as a drive shaft is installed across the bearing portion 32b of the leaf spring 32. The rear axle 34 protrudes from the bearing portion because both ends 34a, 34a are inserted into the bearing portions 32b, 32b, and thus the hubs of the rear wheels 4, 4 (4a) will be installed. Further, since the extended ends of the leaf springs 32 and 32 support the rear wheels, the leaf springs 32 and 32 constitute suspension members for the rear wheels 4 and 4.

As a result, the leaf spring 32 has its own end portion connected to the ribs 2 and its rear axle bearing end 32b formed freely, so that the rear wheels 4, 4 are moved up and down. You can swing. Thus, the leaf spring 32 provides a suspension system similar to the trailing arm and similar to the independent suspension. In addition, the support of the rear axle 34 by the bearing portion 32b of the leaf spring 32 is a bearing bush mounted on the inner periphery of each bearing portion 32b and the corresponding circumference of the rear axle 34. It can be made by installing a bush rubber 36 between the circumference of the 35.

As a result, the right and left wheels 4 and 4 are elastically suspended by the leaf spring 32 proportional to the vehicle body and the rubber 36 proportional to the leaf spring 32 itself. Thus, the cushioning effect of the rear wheels is strengthened, and the obedience of the turning middle and right rear wheels is effectively improved by the action of rubber. Furthermore, the leaf springs 32 and 32 act as armrest supporters for the rear wheels 4 and 4, in addition to the effects of the trailing arms as described above, and the rear of the leaf springs 32. The length of the extension can be as short as possible, and the large swing stroke in the vertical direction is possible as compared with the leaf spring 32 itself being shortened. As a result, the vehicle spacing of the vehicle can thus be shortened in relation to the front wheels 3.

As shown in FIG. 9, the support of the tooth shaft 34 by the bearing part 32b is provided with the ball bearing 135 in the outer periphery of each axle 34 which supports the axle to the inner race, and also the outer race. And 135b to be bonded to the inner circumference of the installation rubber 36. The result is a smoother rotation of the axle. The engine of the vehicle has a unit 39 in which an engine body 37 and a transmission case 38 are combined into one unit. The engine unit 39 is positioned between the right and left leaf springs 32 and below the rear portion 2l of the rib 2 and towards the open space 2q at 2m and 2n as shown in FIG. Is placed. On the upper side of the engine, a pair of brackets 37a are arranged in the width direction of each other and connected to and supported by a pair of suspension plates 41 and 41 via a mounting rubber 40 by bolts and nuts 42. do. The bracket 43 is installed so as to be supported by the lower side of the rear portion 2L of one rib 2, and the pin 45 is installed in the center of the bracket so as to cross the rubber 45 through the rubber 44. Both ends of the pin 45 are connected to the upper ends of the suspension plates 41 and 41. In this case, the pin 45 is formed in a bolt shape, and the plates 41 and 41 are connected to the pin by fastening with a nut 45a.

Reference numerals 46, 47, and 48 in FIG. 7 indicate the carburetor, the air purifying case, and the muffler, respectively. Thus, the engine unit 39 is installed in the downwardly open space 2p of the rear portion 2l of the rib 2 and suspended from the rib 2 with installation rubber. Furthermore, the installation rubber is positioned at three points, namely two points 40 and 40 on the engine unit 39 side and a point 44 on the rib 2 side. The engine unit 39 can elastically support and protect the engine because it smoothly obeys the longitudinal, transverse and vertical movements of the rear wheels 4 and 4. In addition, the vibrations of the rear wheels 4, 4 and the engine 37 can be effectively reduced by the above-described mounting rubber which ensures an excellent anti-vibration effect. In addition, the installation part of the engine unit 39 is located in the center of the width direction between the rear wheels 4 and 4. As shown in FIG.

The engine body 37 having the center of gravity of the engine unit 39 is generally centered in the longitudinal direction of the leaf spring 32 as shown in FIGS. 8 and 7. As a result, large weight power units can be effectively installed, ensuring space utilization and rigid layout. The engine unit 39 is disposed at the center between the rear wheels 4 and 4, and can be improved to a satisfactory level even if the horizontal balance at the rear of the vehicle has inertia generated during the diversion turning operation.

The engine unit 39 is also connected to the rear axle 34. More specifically, the rear axle 34 may include an output shaft portion extending from both sides of the transmission case 38 at the rear of the engine unit 39 to constitute a power unit formed as a single unit with the rear axle as shown in FIG. 38a), divided axially into two halves having an inner end connected in a straight line to 38a. Thus, the engine unit 39 is disposed on the axes of the rear axles 34, 34 so as to be the vertical and horizontal centers of the space between the rear wheels. As a result, the engine unit 39 is located in the lower position of the vehicle, which lowers the center of gravity of the vehicle and results in remarkable stability resulting in a trailing closure resulting from the inertia of the driver sitting in the seat 5 and turning. You will be able to. In addition, the engine unit is connected in a straight line to the rear axle, the space utilization is advantageous, and the configuration is remarkably simple, so that a complicated transmission drive system is not required. As described above, the power unit 39 is disposed in the open space downwardly of the rear portion 2L of the ribs according to the arrangement as described above, thereby improving space utilization and stability and simplifying the transmission drive system. It can be achieved effectively using a minimum of parts.

As indicated in the embodiment, since the rear portion 2L is inclined downwardly, the air flow under the middle portion 2b of the rib 2 passes through the circumference of the engine 37 so that the rear portion 2L of the rear portion 2L The engine 37 is effectively and forcibly cooled because it is guided by the inclined portion.

Claims (1)

The rear ends of the two leaf springs 32 and 32 extend rearward from both sides of the rib 2 under the driver's seat 5 so as to support the axles 34 of the rear wheels 4 and 4. A vehicle having a prime mover, wherein the engine 37 is installed in a space formed between the two leaf springs 32 and 32 and below the rib 2 under the driver's seat 5.