Motorcycle oil tank
By dividing the motorcycle fuel tank into two parts and using a flat flange connection design, the problems of insufficient space utilization and unstable installation of traditional fuel tanks are solved, achieving more efficient space utilization and stable installation, and reducing manufacturing difficulty and cost.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING CHARMING MOTORCYCLE MFG CO LTD
- Filing Date
- 2025-05-23
- Publication Date
- 2026-05-05
AI Technical Summary
Traditional motorcycle fuel tanks suffer from insufficient space utilization and unstable installation when mounted on the frame, and their complex flanged structure leads to insufficient sealing and strength.
The fuel tank is divided into a first shell and a second shell, which are connected by a flat flange. It is equipped with irregular protrusions and grooves to adapt to the frame space. It is manufactured by split stamping, which simplifies the processing and improves sealing and strength.
This design achieves efficient use of the vehicle frame space for the fuel tank, reduces manufacturing difficulty and cost, improves installation stability and sealing, and enhances overall strength.
Smart Images

Figure CN224197887U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of motorcycle parts technology, specifically to a motorcycle fuel tank. Background Technology
[0002] As a crucial fuel storage component, the motorcycle fuel tank's structural design significantly impacts the motorcycle's overall performance and user experience. Traditional motorcycle fuel tanks are typically manufactured using integral casting or simple assembly methods, resulting in significant shortcomings in frame fit and installation. Due to the irregular shape of the mounting space on the frame, traditional fuel tanks struggle to fully utilize the available space, leading to limited tank volume or unstable installation. Furthermore, the complex flanged structure of traditional fuel tanks not only increases the design difficulty and processing cost of the stamping dies but also makes precise fitting during assembly difficult, affecting the tank's sealing and overall strength. Utility Model Content
[0003] In view of the shortcomings of the prior art, this utility model provides a motorcycle fuel tank that is easier to manufacture and can make full use of the space inside the frame.
[0004] The present invention provides a technical solution for a motorcycle fuel tank, comprising:
[0005] A first housing, which is provided with an oil filler port and an oil outlet port, and a first flange is provided on the outer edge of the first housing.
[0006] The second housing has a second flange along its edge, and the second housing and the first housing are connected by the flange to form a closed loading space.
[0007] The beneficial effects of the above technical solution are: dividing the oil tank into a first shell and a second shell and manufacturing them separately can reduce the manufacturing difficulty and eliminate the need for secondary shaping after stamping.
[0008] Furthermore, both the first and second flanges are planar.
[0009] Furthermore, aligned fixing holes are provided on the first and second flanges, and the fixing holes are distributed at the four corners of the first and second flanges.
[0010] Furthermore, the first shell has multiple frustum protrusions, and reinforcing ridges connect the multiple frustum protrusions. The reinforcing ridges are elongated strips with a width slightly smaller than the diameter of the frustum protrusions.
[0011] Furthermore, a sinking groove is provided on the first housing at the position corresponding to the oil filling port, and the edge of the sinking groove smoothly transitions with the top surface of the first housing.
[0012] Furthermore, the bottom of the second housing is provided with an inwardly recessed saddle groove that extends through the second housing along its length.
[0013] Furthermore, the second housing has clearance grooves at both ends on the side facing the front of the vehicle. Attached Figure Description
[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.
[0015] Figure 1 This is a structural schematic diagram of an embodiment of the present invention from one angle;
[0016] Figure 2 This is a structural schematic diagram from another angle of an embodiment of the present utility model;
[0017] Figure 3 This is a front view of an embodiment of the present utility model;
[0018] Figure 4 This is a side view of an embodiment of the present utility model;
[0019] Figure 5 This is an installation diagram of an embodiment of the present utility model.
[0020] Reference numerals: First housing 100, recessed groove 101, reinforcing ridge 102, truncated cone protrusion 103, first flange 110, oil filler port 120, oil outlet 130, second housing 200, saddle groove 210, clearance groove 220, second flange 230, fixing hole 300, frame 400. Detailed Implementation
[0021] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.
[0022] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.
[0023] like Figure 1-5As shown, this embodiment provides a motorcycle fuel tank, including a first housing 100 and a second housing 200. The first housing 100 is provided with a filler neck 120 and a fuel outlet 130, and a first flange 110 is provided on the outer edge of the first housing 100; the second housing 200 is provided with a second flange 230 on its edge. The second housing 200 and the first housing 100 are connected by the flanges to form a closed loading space. The first housing 100 and the second housing 200 are respectively stamped and formed, and the first flange 110 and the second flange 230 can fit together completely, so that the first housing 100 and the second housing 200 can be combined to form a complete fuel tank. In normal use, the first housing 100 is the upper part of the fuel tank, and the second housing 200 is the lower part of the fuel tank. The filler neck 120 is used to inject fuel into the fuel tank, and the fuel outlet 130 is used to output the fuel in the fuel tank to the motorcycle engine for combustion. During installation, the fuel tank needs to be connected to the components of the frame 400. However, the installation space on the frame is not always regular. In order to make better use of the space on the frame, both the first housing 100 and the second housing 200 are adapted. Specifically, irregular protrusions and irregular grooves are provided on the first housing 100 and the second housing 200.
[0024] Furthermore, the first housing 100, viewed from above, is roughly an isosceles trapezoid, with its wider end facing the front of the vehicle and its narrower end facing the rear. The height of the first housing 100, viewed from the side, gradually decreases from front to back, meaning the height towards the front is greater than the height towards the rear, and the height of the first housing 100 is less than that of the second housing 200. The fuel filler neck 120 is located at the corner of the wider side of the first housing 100, and the fuel outlet 130 is located near the corner of the narrower side. The second housing 200, viewed from above, is also roughly an isosceles trapezoid. The front half of the second housing 200, viewed from the side, is roughly rectangular, while the rear half is a smoothly tapering curve that converges towards the first housing 100. This tapering curve reduces the vertical dimension of the rear half of the second housing 200 to accommodate the shrinkage of the space within the frame 400 in the rear half.
[0025] Furthermore, both the first flange 110 and the second flange 230 are flat, meaning that the surfaces of both flanges are on the same plane. This allows the first flange 110 and the second flange 230 to fit together perfectly, facilitating subsequent fixed connection processes. The planar shape of both flanges reduces the difficulty of stamping, resulting in simpler stamping molds and cost savings. Moreover, aligned fixing holes 300 are provided on both flanges 110 and 230, located at their four corners. When installing the fuel tank, bolts can be passed through the fixing holes 300 to secure the fuel tank to the frame 400.
[0026] In some embodiments, a plurality of frustoconical protrusions 103 are formed on the first housing 100, and reinforcing ridges 102 are connected between the plurality of frustoconical protrusions 103. The reinforcing ridges 102 are elongated strips with a width slightly smaller than the diameter of the frustoconical protrusions 103. The frustoconical protrusions 103 are distributed on the outer periphery of the oil inlet 130.
[0027] In some embodiments, a sinking groove 101 is provided on the first housing 100 at a position corresponding to the oil filler port 120, and the edge of the sinking groove 101 smoothly transitions with the top surface of the first housing 100.
[0028] In some embodiments, an inwardly recessed saddle groove 210 is also provided at the bottom of the second housing 200. The saddle groove 210 extends through the second housing 200 along its length and is distributed in the middle of the second housing 200, so that the second housing 200 has good balance after installation.
[0029] In some embodiments, the second housing 200 is further provided with relief grooves 220 at both ends on the side facing the front of the vehicle. The relief grooves 220 can make the corners of the second housing 200 smoother and reduce stress concentration. They can also reduce the stamping stroke of the corners of the second housing 200, so that the pressed second housing 200 will not rebound.
[0030] In the description of this application, it should be understood that the terminology used is for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.
[0031] In this application, unless otherwise expressly specified and limited, the terms "connected," "linked," "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0032] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of this invention may be practiced without these specific details. In some instances, well-known methods, systems, and techniques have not been shown in detail so as not to obscure the understanding of this specification.
[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.
Claims
1. A motorcycle fuel tank, characterized in that, include: A first housing (100) is provided with an oil filling port (120) and an oil taking port (130), and a first flange (110) is provided on the outer edge of the first housing (100); The second housing (200) has a second flange (230) on its edge. The second housing (200) and the first housing (100) are connected by the flange to form a closed loading space.
2. A motorcycle fuel tank according to claim 1, characterized in that, Both the first flange (110) and the second flange (230) are planar.
3. A motorcycle fuel tank according to claim 2, characterized in that, Aligned fixing holes (300) are also provided on the first flange (110) and the second flange (230), and the fixing holes (300) are distributed at the four corners of the first flange (110) and the second flange (230).
4. A motorcycle fuel tank according to claim 1, characterized in that, The first housing (100) has a plurality of frustum protrusions (103) and a reinforcing ridge (102) connecting the plurality of frustum protrusions (103). The reinforcing ridge (102) is a long strip with a width slightly smaller than the diameter of the frustum protrusion (103).
5. A motorcycle fuel tank according to claim 1, characterized in that, A sinking groove (101) is provided on the first housing (100) at the position corresponding to the oil filling port (120), and the edge of the sinking groove (101) smoothly transitions with the top surface of the first housing (100).
6. A motorcycle fuel tank according to claim 1, characterized in that, The bottom of the second housing (200) is also provided with an inwardly recessed saddle groove (210), which penetrates the second housing (200) along the length direction of the second housing (200).
7. A motorcycle fuel tank according to claim 1, characterized in that, The second housing (200) is also provided with clearance grooves (220) at both ends on the side facing the front of the vehicle.