CN201283964Y

CN201283964Y - Motorcycle frame with curved beam

Info

Publication number: CN201283964Y
Application number: CNU2008200998164U
Authority: CN
Inventors: 刘彦; 刘广泽; 钟学良
Original assignee: Chongqing Zongshen Technology Development and Research Co Ltd
Current assignee: Chongqing Zongshen Technology Development and Research Co Ltd
Priority date: 2008-08-27
Filing date: 2008-08-27
Publication date: 2009-08-05
Anticipated expiration: 2018-08-27

Abstract

The utility model relates to a curved beam motorcycle frame, including a vertical tube, a main beam tube, two back rail tubes and two strutting piece tubes, wherein, the front lower end of the back rail tube is welded to the rear lower end of the main beam tube, their back ends are welded together into one, so that the two back rail tubes form a frame, and the rear part of the frame is in horizontal shape; the front ends of the two strutting piece tubes are welded to the middle lower part of the main beam, the rear ends are respectively welded to the sloped segments of the two back rail tubes, so that the strutting piece tubes are slightly inclined upward from the front end to rear end, and the distance between the middle rear segments of the two strutting piece tubes is larger than the distance between the sloped segment and the rear portion horizontal segment of the two back rail tubes. Storage case mounting bosses are provided on the main beam tube and the back rail tube. The curved beam motorcycle frame can be installed with a storage case with a larger box size to meet the needs of users for having a curved beam motorcycle with a large volume of storage case.

Description

Bent-beam motorcycle frame

Technical field

The utility model relates to a kind of vehicle frame of motor bike, particularly bent-beam motorcycle frame.

Background technology

The vehicle frame of existing bent-beam motorcycle mainly is welded by standpipe, girder pipe, two back rest pipes and two down tubes, on its neutral tube is welded on before the girder pipe, back rest pipe front end is welded on girder pipe middle and lower part, the preceding lower end of down tube is welded between girder pipe lower end and the back rest pipe postmedian, with the tubular forming V-shape structure of girder.The girder pipe is the metal pipe material of single bending, and two back rest pipe almost parallel ground arrange vertically that along vehicle frame it is mainly used in things such as supporting storage box mounted thereto, fuel tank and seat cushion; Down tube is mainly used in and supports back rest pipe, to strengthen the load-carrying capacity of back rest pipe.

The storage box of existing bent-beam motorcycle is mounted on the back rest pipe, and be positioned at below the seat cushion, because back rest pipe is to the supporting restriction of storage box, storage box can not fall between girder pipe and the down tube in the formed V-arrangement space, storage box can only so its installing space is very limited, thereby make the volume of storage box very little between back rest pipe and seat cushion, the small article that only can hold a little can not satisfy the demand of user to bent-beam motorcycle with large volume storage box.

The utility model content

The purpose of this utility model provides a kind of bent-beam motorcycle frame, and the storage box of larger volume can be installed, to satisfy the demand of user to bent-beam motorcycle with large volume storage box.

Bent-beam motorcycle frame described in the utility model, comprise standpipe, girder pipe, two back rest pipes and two down tubes, standpipe is welded on the preceding upper end of girder pipe, two preceding lower ends of back rest pipe are welded on girder pipe posterior end, with the tubular forming V-shape structure of girder, its tail end welding combines as a whole, and makes two back rest pipes form framework, and this frame rear portion is divided horizontal; Two down tube front ends are welded on girder pipe middle and lower part, and its rear end is welded on respectively on two back rest pipes, and slightly inclined is upwards from front to back to make down tube; Girder pipe middle and lower part is welded with the storage box installation base, is welded with the storage box installation base respectively on two back rest pipes, and it is positioned at the junction of back rest pipe tilting section and rear horizontal section.

Distance between two down tube posterior segments is greater than the distance between two back rest pipe tilting sections and the rear horizontal section.

For this bent-beam motorcycle frame, storage box can be designed to wide structure Width is narrow up and down.Storage box is fixed on the storage box installation base that is arranged on girder pipe and the back rest pipe, the narrow part in storage box bottom will be from falling to the bottom in formed V-arrangement space between girder pipe and the back rest pipe between two down tubes, the wide part in top then is positioned on two down tubes, and storage box is just between girder pipe and back rest pipe in the formed V-arrangement space like this.Distance between two down tube posterior segments can make the narrow part in storage box bottom of the bottom that falls into the V-arrangement space have bigger volume greater than the distance between two back rest pipe tilting sections and the rear horizontal section.Storage box is bearing on girder pipe and two back rest pipes, rather than directly is supported on the down tube, so down tube mainly is to play the effect of strengthening that connects.

Bent-beam motorcycle frame described in the utility model is owing to have this kind structure, make the storage box that is installed on the vehicle frame can fully occupy formed V-arrangement space between girder pipe and the back rest pipe, this V-arrangement space is fully utilized, this will increase the volume of storage box dramatically, make the storage box can the more article of dressing, thereby make this bent-beam motorcycle frame the storage box of larger volume can be installed, satisfied the demand of user bent-beam motorcycle with large volume storage box.This kind body frame structure for automotive simultaneously, still is coupled to each other the triangularity framed structure, so can't produce adverse influence to vehicle frame single-piece rigidity and intensity owing to constitute girder pipe, back rest pipe and the down tube of this bent-beam motorcycle frame.

Description of drawings

Now in conjunction with the accompanying drawings the utility model is described in further detail.

Fig. 1 is the front view of bent-beam motorcycle frame described in the utility model;

Fig. 2 is the birds-eye view of Fig. 1;

Fig. 3 is the block diagram of this bent-beam motorcycle frame.

The specific embodiment

This bent-beam motorcycle frame comprises standpipe 1, girder pipe 2, two back rest pipes 5 and two down tubes 3, standpipe 1 is welded on the preceding upper end of girder pipe 2, two back rest pipe 5 preceding lower ends are welded on girder pipe 2 posterior ends, form v-shaped structure with girder pipe 2, its tail end welding combines as a whole, make two back rest pipes 5 form framework, this frame rear portion is divided horizontal, and promptly the trailing portion of two back rest pipes 5 forms a horizontal surface.Two down tube 3 front ends are welded on girder pipe 2 middle and lower parts, its rear end is welded on respectively on the tilting section of two back rest pipes 5, make down tube 3 from front to back slightly inclined upwards, and the distance between two down tube 3 posterior segments is greater than the distance between two back rest pipe 5 tilting sections and the rear horizontal section.Girder pipe 2 middle and lower parts are welded with storage box installation base 6, and it roughly between two down tubes 3, is welded with storage box installation base 4 respectively on two back rest pipes 5, and it is positioned at the junction of back rest pipe 5 tilting sections and rear horizontal section.

Claims

1, a kind of bent-beam motorcycle frame, comprise standpipe (1), girder pipe (2), two back rest pipes (5) and two down tubes (3), standpipe is welded on the preceding upper end of girder pipe, it is characterized in that: two preceding lower ends of back rest pipe are welded on girder pipe posterior end, with the tubular forming V-shape structure of girder, its tail end welding combines as a whole, and makes two back rest pipes form framework, and this frame rear portion is divided horizontal; Two down tube front ends are welded on girder pipe middle and lower part, and its rear end is welded on respectively on two back rest pipes, and slightly inclined is upwards from front to back to make down tube; Girder pipe middle and lower part is welded with storage box installation base (6), is welded with storage box installation base (4) on two back rest pipes respectively, and it is positioned at the junction of back rest pipe tilting section and rear horizontal section.

2, bent-beam motorcycle frame according to claim 1 is characterized in that: the distance between two down tube posterior segments is greater than the distance between two back rest pipe tilting sections and the rear horizontal section.