CN108909913A - Fixing structure for oil tank and its motorcycle - Google Patents

Abstract

The invention discloses a fuel tank fixing structure and a motorcycle thereof. The fuel tank fixing structure includes a connecting frame fixed to the fuel tank, a fixing pipe fixed to the motorcycle frame, and a hinge shaft used to hinge the connecting frame to the fixing pipe; The connecting frame is a groove-shaped plate, and the two lateral side plates of the groove-shaped plate are located at both ends of the fixed pipe. The two lateral side plates are provided with mounting holes. Locking and fixing; the grooved plate is hinged to the fixed pipe through the hinge shaft, which is beneficial to improve the structural strength of the connection between the fuel tank and the frame, especially the two ends of the fixed pipe are laterally limited by the two side plates of the grooved plate, which is beneficial to improve the connection. The transverse impact resistance of the structure is strong through the longitudinal connection structure, which can effectively improve the fixing stability of the fuel tank. At the same time, the assembly efficiency is high and the production efficiency is improved.

Description

Fuel tank fixed structure and its motorcycle

technical field

The invention relates to the field of motorcycle component installation, in particular to a fuel tank fixing structure and a motorcycle thereof.

Background technique

The motorcycle fuel tank is generally arranged on the front side of the motorcycle seat for storing fuel, and the fuel tank is generally fixed with a plurality of mounting lugs and a plurality of fixed lugs on the vehicle frame by bolts; and in the prior art , because there is usually a large amount of fuel stored in the fuel tank, when the motorcycle stops and starts suddenly, the main inertia force of the fuel tank is mainly along the front and rear directions, and at the same time, the lateral sides are also subject to relatively large impact forces, while the existing support The impact resistance of the lug connection structure is small, which is not conducive to stably fixing the fuel tank, and the assembly is troublesome, which is not conducive to the improvement of production efficiency.

Therefore, in order to solve the above problems, there is a need for a fuel tank fixing structure and its motorcycle, which can effectively improve the stability of the fuel tank fixing, and at the same time, have high assembly efficiency and improve production efficiency.

Contents of the invention

In view of this, the object of the present invention is to overcome the defects in the prior art, and provide a fuel tank fixing structure and its motorcycle, which can effectively improve the stability of the fuel tank fixing, and at the same time, have high assembly efficiency and improve production efficiency.

The fuel tank fixing structure of the present invention includes a connecting frame fixed to the fuel tank, a fixing pipe fixed to the motorcycle frame, and a hinge shaft for hingedly connecting the connecting frame to the fixing pipe; the connecting frame is a groove-shaped plate and the groove-shaped plate The two lateral side plates are located at both ends of the fixed pipe, and the two lateral side plates are provided with installation holes, and the hinge shaft traverses the installation hole and the fixed pipe and is axially locked and fixed by the locking piece.

Further, the inner cavity of the fixed tube is further provided with a positioning sleeve, and the positioning sleeve is overlaid on the outer circle of the hinge shaft.

Further, the positioning sleeve is a T-shaped bush, and there are two T-shaped bushes, which are respectively arranged at both ends of the fixing, and the lower end surface of the flange of the T-shaped bush is axially pressed against the end surface of the fixed pipe

Further, the hinge shaft is fixed with a fixing nut, and the other end is provided with a pin hole radially, and the locking member is a cotter pin and axially locks the hinge shaft through the pin hole.

Further, the cotter pin includes a first pin leg and a second pin leg formed by bending a pin bar and juxtaposed, and the first pin leg and the second pin leg face toward the first pin leg near the fixed connection end. The outer side of the plane where the second pin leg is located is bent to form a bent section, and the first pin leg or the second pin leg is bent to form a clamping positioning groove.

Further, the bending angle of the first pin leg and the second pin leg near the fixed connection end is a right angle.

Further, the first pin leg or the second pin leg is bent multiple times to form a wave bar, and the clamping positioning groove is an arc-shaped slot on the wave bar opposite to the second pin leg or the first pin leg.

Further, the bent section is a U-shaped section, and the bottom connection of the U-shaped section is an arc-shaped transition; the U-shaped section and the first pin leg and the second pin leg are arc-shaped transitions.

Further, the first pin leg is bent multiple times to form a wave bar, and the first pin leg is located at one end of the cotter pin opening to form a straight section, and a V is formed between the straight section and the front section of the second pin leg. type opening.

The invention also discloses a motorcycle. The fuel tank of the motorcycle is installed and fixed through a fuel tank fixing structure, and the fuel tank fixing structure is the fuel tank fixing structure of the above structure.

The beneficial effects of the present invention are: a fuel tank fixing structure and its motorcycle disclosed in the present invention, the groove-shaped plate is hinged to the fixed pipe through the hinge shaft, which is beneficial to improve the strength of the connection structure between the fuel tank and the frame, especially the two sides of the fixed pipe. The two side plates of the end-to-trough plate are limited along the transverse direction, which is beneficial to improve the transverse impact strength of the connection structure. The strong connection structure along the longitudinal direction can effectively improve the fixing stability of the fuel tank. At the same time, the assembly efficiency is high and the production efficiency is improved.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing and embodiment:

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the three-dimensional structure schematic diagram of the present invention;

Fig. 3 is a schematic structural view of a cotter pin in the present invention.

Detailed ways

Fig. 1 is a schematic structural view of the present invention, Fig. 2 is a schematic three-dimensional structural view of the present invention, and Fig. 3 is a schematic structural view of a cotter pin in the present invention, as shown in the figure, the fuel tank fixing structure in this embodiment includes a pin fixed to the fuel tank The connecting frame, the fixed pipe fixed on the motorcycle frame and the hinge shaft 8 for the connecting frame to be hinged to the fixed pipe; Both ends and two lateral side plates are provided with installation holes, and the hinge shaft 8 traverses the installation holes and the fixed pipe 7 and is axially locked and fixed by the locking piece; of course, the connecting frame is fixedly arranged at the rear of the fuel tank The lower side, while the front section of the fuel tank is provided with connecting lugs fixed to the vehicle frame, the bottom of the grooved plate 6 is conformally welded and fixed to the bottom of the fuel tank, and the side wall of the fixed pipe 7 is welded and fixed to the vehicle frame. The above-mentioned locking member can be an existing locking structure such as a cotter pin, and the groove-shaped plate 6 is hinged on the fixed pipe 7 through the hinge shaft 8, which is beneficial to improving the structural strength of the connection between the fuel tank 11 and the vehicle frame, especially the two ends of the fixed pipe 7. Limiting the two side plates of the grooved plate 6 along the transverse direction is beneficial to improve the transverse impact strength of the connection structure, and through the strong connection structure along the longitudinal direction, the fixing stability of the fuel tank can be effectively improved, and at the same time, the assembly efficiency is high and the production efficiency is improved.

In this embodiment, the inner cavity of the fixed tube 7 is also provided with a positioning sleeve, and the positioning sleeve is sleeved on the outer circle of the hinge shaft 8; Between the hinge shafts 8, a positioning sleeve is arranged to facilitate the force received by the hinge shaft 8 to act on the fixed sleeve through the positioning sleeve to ensure the stability of the hinge shaft 8.

In this embodiment, the positioning sleeve is a T-shaped bush, and there are two T-shaped bushes (including the left T-shaped bush 9 and the right T-shaped bush 10), which are respectively arranged at both ends of the fixed pipe. The lower end surface of the flange of the bush is axially pressed against the end surface of the fixed pipe 7; the T-shaped bush is conducive to the axial fixing of the positioning sleeve on the fixed pipe 7, and the force received by the hinge shaft 8 can be effectively reduced by the two T-shaped bushes. It is transmitted to the fixed pipe 7 through two T-shaped bushes, which has a simple structure and is easy to assemble.

In this embodiment, the hinge shaft 8 is fixed with a fixed nut, and the other end is provided with a pin hole radially, and the locking member is a cotter pin and axially locks the hinge shaft 8 through the pin hole; A washer is also provided on the axial inner side of the locking member, and the cotter pin is a prior art, and will not be repeated here.

In this embodiment, the cotter pin includes a first pin leg and a second pin leg that are formed by bending a pin bar and are juxtaposed. The first pin leg and the second pin leg are near the fixed connection end toward the The outer side of the plane where one pin leg and the second pin leg are located is bent to form a bent section, and the first pin leg or the second pin leg is bent to form a clamping positioning groove; by connecting the first pin leg 1 and the second pin leg The pin leg 2 is bent toward the outside of the plane where the first pin leg 1 and the second pin leg 2 are located near the fixed connection end to form a bending section 3, which is beneficial to shorten the moment arm of the first pin leg 1 and the second pin leg 2 , increase the pressing force, avoid being able to be stably fixed on the positioned shaft 5, avoid loosening and falling off, and the structure is simple and easy to prepare; the bending angle conformity of the bending section 3 can be set so that the bending section 3 and The resisting fit of other parts is used for positioning the cotter pin along the length direction of the first pin leg 1; the positioning groove 4 can be an arc groove or a triangular groove or the like.

In this embodiment, the bending angles of the first pin leg 1 and the second pin leg 2 near the fixed connection end are right angles; it is beneficial for the bending section 3 to be used as a handle, which is convenient for handling and using the cotter pin.

In this embodiment, the first pin leg 1 or the second pin leg 2 is bent multiple times to form a wave bar, and the clamping positioning groove 4 is formed on the wave bar with the second pin leg 2 or the first pin leg 1 The opposite arc-shaped groove; in this embodiment, the first pin leg 1 is bent multiple times to form a wave rod, and the arc-shaped groove is conducive to high positioning accuracy and good stability of the cotter pin and the positioned shaft.

In this embodiment, the bending section 3 is a U-shaped section, and the bottom joint of the U-shaped section is an arc transition; the U-shaped section and the first pin leg 1 and the second pin leg 2 are Arc transition avoids stress concentration and at the same time ensures good elastic performance.

In this embodiment, the first pin leg 1 is bent multiple times to form a wave bar, and the first pin leg 1 is located at one end of the cotter pin opening to form an oblique straight section 5, and the oblique straight section 5 is connected to the second pin A V-shaped opening is formed between the front sections of the legs 2; it is convenient for insertion and installation.

The invention also discloses a motorcycle. The fuel tank of the motorcycle is installed and fixed through a fuel tank fixing structure, and the fuel tank fixing structure is the fuel tank fixing structure of the above structure; the fuel tank of the motorcycle is firmly fixed and has a long service life.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be carried out Modifications or equivalent replacements without departing from the spirit and scope of the technical solution of the present invention shall be covered by the claims of the present invention.

Claims (10)

1. A fuel tank fixing structure, characterized in that: it comprises a connecting frame fixed to the fuel tank, a fixed pipe fixed on the motorcycle frame and a hinge shaft for connecting the connecting frame to the fixed pipe; the connecting frame is groove-shaped The two transverse side plates of the plate and the grooved plate are located at both ends of the fixed pipe, and the two transverse side plates are provided with installation holes, and the hinge shaft traverses the installation hole and the fixed pipe and is axially locked and fixed by the locking piece. 2. The fuel tank fixing structure according to claim 1, characterized in that: the inner cavity of the fixing pipe is further provided with a positioning sleeve, and the positioning sleeve fits over the outer circle of the hinge shaft. 3. The fuel tank fixing structure according to claim 2, characterized in that: the positioning sleeve is a T-shaped bush, and there are two T-shaped bushes, which are respectively arranged at both ends of the fixing, and the flanges of the T-shaped bushes The lower end face axially presses against the end face of the fixed pipe. 4. The fuel tank fixing structure according to claim 1, characterized in that: the hinge shaft is fixed with a fixing nut, and the other end is provided with a pin hole in the radial direction, and the locking member is a cotter pin and passes through the pin The hole axially locks the hinge shaft. 5. The fuel tank fixing structure according to claim 4, wherein the cotter pin includes a first pin leg and a second pin leg formed by bending a pin bar and juxtaposed, the first pin leg and the second pin leg The second pin leg is bent toward the outside of the plane where the first pin leg and the second pin leg are located near the fixed connection end to form a bent section, and the first pin leg or the second pin leg is bent to form a clamping position groove. 6. The fuel tank fixing structure according to claim 5, wherein the bending angle of the first pin leg and the second pin leg near the fixed connection end is a right angle. 7. The fuel tank fixing structure according to claim 5, characterized in that: the first pin leg or the second pin leg is bent multiple times to form a wave bar, and the clamping positioning groove is on the wave bar and the second The pin leg or the arc-shaped groove opposite to the first pin leg. 8. The fuel tank fixing structure according to claim 5, characterized in that: the bending section is a U-shaped section, and the bottom joint of the U-shaped section is an arc-shaped transition; the U-shaped section and the first pin There is an arc transition between the leg and the second pin leg. 9. The fuel tank fixing structure according to claim 5, characterized in that: the first pin leg is bent multiple times to form a wave bar, and the first pin leg is located at the opening end of the cotter pin to form an oblique straight section, so A V-shaped opening is formed between the oblique straight section and the front section of the second pin leg. 10. A motorcycle, the fuel tank of which is installed and fixed by a fuel tank fixing structure, characterized in that: the fuel tank fixing structure is the fuel tank fixing structure described in any one of claims 1-9.