JPS60113785A - Car body frame for motorcycle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] The present invention has been made by the construction of 4 related to heavy body frames for motorcycles.
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There is a ridged type of EU body frame in 1d+Nihakuichi, but there are heavy frames with parts extending rearward from the rad pipe on the left and right sides, such as double cradle frame, diamond frame, etc. There is. 1Double cradle type heavy frame 1 shown in Fig. 1
is the same as the main pipe 8 extending rearward from the head pipe 2 on the left and right sides, but the engine body 5 of this Q combination is
is supported by the insect body 7 frame 1 while being placed on the down tube 4. Its support is shown at 6.7.8. This type of 1 [body 7 frame 1] has a large 50 part of the engine body, so it cannot be said to be the most efficient riqing due to the unnecessary heavy frame @ degree 'II'. As the cross-section of the heavy body frame becomes larger, 1+rw tends to increase, which is 1, and since the downtube is lower than the engine body 5, the crystallinity of the heavy body tends to become -4.・Vita, II < 2 The diamond 7-frame type heavy frame 9 shown in Fig.
The main pipe 11 extends rearward from the left and right sides. One frame member 1 extending downward from the head pipe 10
2, the engine main body 18 has a front part connected to the frame member 1.
The main vibrator 11 is connected to the lower end of the main vibe 11 at its rear end, and is supported by the giant frame 9 so as to be suspended therefrom. Its support is shown at 14.15.16. In this case, the engine body 18 serves as a strength member and also serves as a part of the claw body frame, but this body frame type is also not the most efficient structure for obtaining strength.

This invention was made against the above background, and has a structure that is extremely efficient in obtaining strength of the vehicle body frame using an unprecedented structure, and the cross-sectional shape of the members constituting the vehicle body frame is reduced, resulting in a lighter needle. The object of the present invention is to obtain a large body frame for a motorcycle that can easily reduce the elegance of the large body.

The configuration of the present invention can be modeled and explained as shown in Fig. 3 (a).
, (B), the main frame 21 of the giant seven-frame frame 20 extends backward from the head pipe 22 on the left and right sides, and the main frame 21 is connected to the head pipe 22 at the front apex A, and the hend pipe 22 is diagonally connected to the main frame 21. When viewed from the side, the rear apex portion B is located in the lower bale direction, and the left and right main frames 21 are connected by a cross member 23 at least in the vicinity of the upper hundred point portion C of the main frame 21. This is a huge frame in which the engine body 24 is suspended from at least three points: the diamond-shaped upper apex C, the lower old point D, and the rear apex B of the main frame 21. In this body frame, the engine wood body 2
4 becomes a rigid body with a strength member, and is equivalent to a structure with a strength member corresponding to the line segment (A) (indicated by a dotted line) connecting the upper moon point part C and the lower vertex part D. There is. That is, the giant frame 20 of the present invention forms a triangular ADC and a triangular cedar CDB when viewed from the side, and forms an almost triangular ACC as shown in FIG. ing.

As described above, the main frame 21 of the vehicle body frame 20 of the present invention has a truss structure in which the engine body 24 also serves as a strength member and has a strength member extending from the upper apex C to the lower old point D at the center of the rhombus. Because of this structure, it is an extremely efficient structure from a structural mechanical point of view in order to obtain the fineness of the body frame, and the cross-sectional cedar-like shape of the members that make up the body frame is made smaller to reduce weight. It is easy to do. The vehicle body frame 20 of the present invention suspends the engine body 24, unlike the conventional double cradle frame in the first direction, which supports the engine body to be hit. Since there is no frame part, the vehicle body can be made lower, making it suitable for motorcycles such as racers.

4(a) and 4(b) are similar models of one embodiment of the present invention, but in this case, the main frame 21 having a rectangular shape is shown downward from the vicinity of the rear vertex B. Also at the lower end E of the lower east member 46, the engine body 2
4 was supported.

In this case, the engine body 24 also has a strength member corresponding to the line segment (B) (indicated by a dotted line) connecting the lower apex D and the lower end E of the main frame 21, and this huge frame 20 is three types of BDE viewed from the side.
This structure has been added, making it even more solid as a truss structure, and making it even more efficient from a cotton milling point of view in terms of obtaining the strength of a huge frame.

Next, a concrete example of the embodiment shown in FIG. 4 will be described with reference to FIG. 5. In addition. Figure 4 (a), (
The parts corresponding to (b) will be explained using the same notation.

Figure 5 shows a schematic side view of the automatic two-wheeled vehicle, with 20 being the body frame (indicated by hatching), 24 being the carrot body,
The engine main body 24 is suspended from the vehicle frame 20 by four suspension parts B, C, H, and N of the giant frame 20. This engine 24 is a two-citer front and rear V-type engine, and exhaust chambers 25 and 26 are arranged around the engine body, and the exhaust chambers 25 and 26 are covered with a cover 27. In addition, 28 is a front fork that supports the front wheel 20, and 30 is a rear fork that supports the rear wheel 31.
This rear fork 80 is swingably and pivotally connected to a pin end portion 82 of the work frame 20. Also,
88G Ela radiator, δ4 is the additive, 85 is the cowling, 86 is the seat.

11i? As shown in the perspective view of No. AK, the head pipe Z2, which is rotatably supported by the steering wheel (not shown), is mounted diagonally on the left and right from the Rad2 pipe 22. Lower rear hr (rlrH protruding main frame 21, hanging member 46 extending downward from the rear end 1 part of J main 7 frame 21, left and right at the center and rear end of main frame 21: Connecting cross member 28.37.3B, a seat rail 30 extending rearward from the +9 connecting portion ffj of the central cross member 28 and the main frame 21; Furthermore, it consists of this stay 41), the seat rail 89, and a reinforcing member 41 that is continuous with the seat rail 89.

The main frame 21 is welded to the front end vibrator 22, and the cross member 28 at the center is connected to the main frame 21 by welding. (Twin 7-frame top 1II with a sharply bent downward slope from the vicinity of
The main frame t-, +ta+ r+
+14.2, a main frame lower ++III part 44 extending rearward so that a hole 48 is formed between the main frame upper part 42 and the main frame lower +Mi1 part 44.
The main frame regret section 45 where each divine city is connected to the
I have an rc. Note that the rear end portion 45 of the seven main frames is made integrally with the vertical F member 46. That is,
The main 7 frame 21 of the actual example includes the main 7 frame L part 42, the main 7 frame lower part 414, as described in h.
The rear end portion 45 of the main frame is formed into a diamond shape from the side, and a hanging member 46 is formed integrally with the rear end portion 45 of the main frame. Ml hanging part, C, LH, I
Uha, the 7% type 'F scream apex D of the main 7-ray A91,
The upper apex C, the lower apex B, and the lower end EK of the vertical member 46 are all 1+i''f, so they are indicated by the same symbol.
This is the part connected to the head pipe 22.

The beginning of this (main claim 21 as constructed is 983
As described in Figure 1, the engine body 24 is passed as a strength member between the upper apex C of the main frame 21 and the apex of the 1111 shape, and the lower Both the side apex part ■) and the lower end part of the hanging member 416 (2) are of fAf structure with the engine body z4 passed as a strength member, and the claw body frame 2
0 is a triangle A I')C', 3tr111 when viewed from the side
t Cl) B, 3fQ type HD ID-& None, 1 from the top forms a triangle AC'C', so to speak, it becomes the claw body frame of the truss structure. Therefore, the aforementioned Tll7 <
, il1 body 717-mu's 11 "with a degree of χ4%, it is an extremely efficient structure in terms of drawing power. The hole 48, which corresponds to the interior of the diamond shape, facilitates engine maintenance since the parts are not interlocking.

l "Oh, the upper part 42 of the main frame is shown in Figure 7~
As shown in Figure 1q1, the outside of the U-shaped cross section formed by Kepres forming of the steel plate ([1F<II material 4+28 and inside ill l<
ll material 42b,! The main frame lower part 27 is also formed by &+4tlj Y press molding as shown in detail in Fig. 12 from the 1θ1 mark. The outer member 44a and the inner member 44.b, each having a U-shaped cross section, are opposed and butt welded to form a substantially rectangular shape.

In addition, the Rtl main frame (D 4 part 115 and the hanging member 46 are the 13th (support), as shown in the 1st figure,
It is made of KH4 integrally by machining the steel material, and the rear end 45 of the main frame has an upper main frame 42 and a lower main frame tit! IKB44
Each of the temples is fixed by welding, and the stay 400)'F part is made to be welded, and the part of the hanging MB stroke 46 is
A bibond portion 32 is provided.

The details of the engine installation are shown in Figure 4, and when the +IH is removed, the lower apex f) of the main frame 21 is as follows.
Main frame 11114 parts 4cIIK platen fixed by welding) 4 parts M are provided, and the engine body 24 is attached with bolts 48. In this embodiment, the upper jL1 point L%C' is attached via a VC plate 50 fixed to the F side of the cross member 28 with bolts and nuts.

For the rear f + ll I I mouth point capital Bvr, various parts ff
It is attached by bolts 52 and nuts 58 that are passed to the left and right twin frames 21 with 151 interposed therebetween.

For the lower end part 1 of the hanging member 46, each piece η°I
Fi4.55'iff left and right main frame--
-1 by bolt 56 and nut 67
17 can be added. Note that 58,150 is step]1
The plate with 7 is for hanging member 46v with bolt 60.61
l+ can be sledded.

As explained below, in the present invention, the main frame extending rearward from the head pipe on the left and right sides is connected at its front apex to the grip pipe, and its rear apex is positioned diagonally downward and rearward of the head pipe. position +1ffi = rThe side view is formed into a diamond shape, and the left and right main frames are:
The engine body is connected by cross member pressure near the upper apex position of the Yusugi of the main 7 frame, and the engine body is connected to the upper apex of the '411 cedar of the main 7 frame and the rear side. The engine body is suspended at at least 3 points from the apex of the main frame.
7 Summer members and (-tei IH), the tiL body frame becomes a truss horizontally thin so to speak, and the strength of the timber frame can be increased to become 6'& 1llff, which is extremely efficient in terms of structural dynamics. Therefore, the U (body 7) By making the cross-sectional shape of the component that is to be made smaller, it is possible to make it lighter and to make it easier to heat up the low range.In addition, the engine support method is a suspension method, and it is possible to !l K [Because there is no body frame member, it is possible to make a motorcycle such as a racer [1(f gastrointestinal).

Drawing 0) Flit Lit 1-(9 Ming 11th Showa is the conventional heavy body frame model + 4. )
(closed) is a side view of the book "i9 Ming's heavy frame modeled and shown.
Figure (a) is the l1Iil blood diagram modeled on the BL body frame shown in the present invention σJ-Sushi-like 7, and (b) is the same plane M1 3rd (branch) and below is 2J4 & li4ge), (b) A concrete example of the heavy body frame of
Perspective IA-Figure 7 of frame and parts with engine IIV (Enlargement of recess 41 on main 7 frame in Figure 6
1iJ plane view, g figure are the same plane (Ki, figure 9 is g l”
JJ K tj ke 7) I < - [(, l? J rfi [
i2+, enlargement of main frame 1:010 part in 1st OPXH1j"nAm +111] Figure, 11I'2
I is the 1st view of the M arrow of the clasp in Figure 1O, and the t2 is the tth
□+
Enlarged side view of the rear end and hanging member of the main 7 frame in 11.4, 1st group IA is W-X at tJ in 131XJ
IV line cross section] It is a bacterium.

20... Heavy frame, zl... Main 7
Remu 22...Head pipe, 2B...
・Cross member, 241...Engine body, a7
, 38...Cross member, 4, 2...
Main 7 frame upper +m section, 441... Main frame lower UB, 41 f5... Main frame rear end, 416... Flying g++ material, A...
...+>rt Front apex part 1 (... Rear side 1a point part (hanging part), C... Upper apex part (hanging part),
D...lower apex part (hanging part), E...lower end C hanging part).

Applicant: Honda Motor Co., Ltd. PR company Representative hitter Bentsu (to Shiga Masaka, ;,,.

゛・search・ Figure 1 Figure 3 mark Figure 2 Figure 4 Q Figure 13 1 fart 14th i1. :+ 2

Claims (1)

[Claims] Main 7 extends rearward from the head pipe on both the left and right sides.
The frame is connected to the head pipe w 1111111 +0 point, and the rear side 1 is connected to the diagonally downward rear position of the head pipe.
1"! The side view of the waist part is formed into a diamond shape, and the left and right main frames are at least 1 point above the diamond shape of the main frame when viewed from the side.
It is located near a and is connected by a cross member, and is suspended from at least three points: the +1IIl apex, the do side apex, and the rear 1μm1 apex of the diamond-shaped main frame of the engine body. 11. of two-wheel di. The body has 7 rams.