Motorcycle frame head structure

Abstract

The utility model discloses a motorcycle frame head structure, which belongs to the technical field of motorcycles and comprises a main beam, a front connecting plate and a front vertical pipe, the front connecting plate is fixedly connected to the bottom end of the main beam, the front vertical pipe is movably hinged to the front ends of the main beam and the front connecting plate through a hinge shaft, and the circumferential surface of the front vertical pipe is fixedly connected with a connecting arm. The front connecting plate is located on the inner side of the connecting arm, a positioning hole set is formed in the connecting arm, a plurality of limiting holes are formed in the front connecting plate, the positioning hole set corresponds to the limiting holes, and a reinforcing mechanism is arranged between the main beam and the front vertical pipe; according to the utility model, the positioning hole group and the limiting hole are matched with bolts for fixation, and the reinforcing mechanism is matched with bolts for secondary fixation of the front vertical pipe, so that the strength of the hinged parts of the front vertical pipe, the main beam and the front connecting plate is improved, the front vertical pipe is stabilized at the current angle, and the integral adjustment of the angle between the front wheel steering system of the motorcycle and the frame main body is realized; the angle and the position of the handlebar are changed to adapt to different riding postures of a driver.

Description

TECHNICAL FIELD

[0001] The utility model relates to motorcycle technical field, more specifically, relate to a motorcycle frame head structure. BACKGROUND

[0002] The motorcycle frame head structure is the important component part of motorcycle frame, it is the only connecting point of front wheel steering system and frame part, makes the steering force of handlebar to be able to be transmitted to front wheel through steering shaft, realizes the steering function of motorcycle.

[0003] At present, the motorcycle frame head structure mainly comprises frame main frame front end structure and steering vertical pipe, can provide the steering function for motorcycle front wheel, but, most motorcycle frame head structures in the prior art are generally connected and fixed by welding, the steering vertical pipe is fixed on the main frame front end structure and cannot be adjusted, so that the front wheel steering shaft of the motorcycle can only be installed at an angle, the inclination angle of the front wheel steering shaft cannot be changed, and it is difficult to adapt to different riding postures of the driver. UTILITY MODEL CONTENTS

[0004] 1. TECHNICAL PROBLEM TO BE SOLVED

[0005] In view of the problems in the prior art, the utility model aims at providing a motorcycle frame head structure, which aims at solving the problem that the motorcycle frame head structure in the prior art is generally connected and fixed by welding, the steering vertical pipe is fixed on the main frame front end structure and cannot be adjusted, so that the front wheel steering shaft of the motorcycle can only be installed at an angle, the inclination angle of the front wheel steering shaft cannot be changed, and it is difficult to adapt to different riding postures of the driver.

[0006] 2. TECHNICAL SCHEME

[0007] To solve the above problems, the utility model adopts the following technical scheme:

[0008] A motorcycle frame head structure, comprising a main beam, a front connecting plate and a front vertical pipe, the front connecting plate is fixedly connected to the bottom end of the main beam, the front vertical pipe is movably hinged to the front end of the main beam and the front connecting plate through a hinge shaft, the circumferential surface of the front vertical pipe is fixedly connected with a connecting arm, and the front connecting plate is located on the inner side of the connecting arm, a plurality of positioning holes are formed in the connecting arm, a plurality of limiting holes are formed in the front connecting plate, and the plurality of positioning holes correspond to the plurality of limiting holes, a reinforcing mechanism is arranged between the main beam and the front vertical pipe, and the reinforcing mechanism is used for improving the connecting strength between the front vertical pipe and the main beam.

[0009] As a preferred scheme of the utility model, the reinforcing mechanism comprises a double-arm connecting rod, a plurality of connecting hole groups and a fixing hole, the double-arm connecting rod is fixedly connected to the circumferential surface of the front vertical pipe, and the main beam is located at the inner side of the double-arm connecting rod, the plurality of connecting hole groups are all arranged on the double-arm connecting rod, and the fixing hole is arranged on the main beam and corresponds to the plurality of connecting hole groups.

[0010] As a preferred scheme of the utility model, the plurality of connecting hole groups and the plurality of limiting holes are uniformly distributed around the hinge shaft of the hinge joint of the main beam, the front connecting plate and the front vertical pipe.

[0011] As a preferred scheme of the utility model, the main beam and the front connecting plate are fixedly connected with a reinforcing rod, and the reinforcing rod is located at the lower side of the main beam and the rear side of the front connecting plate.

[0012] As a preferred scheme of the utility model, the circumferential surface of the front vertical pipe is fixedly connected with a limiting assembly.

[0013] As a preferred scheme of the utility model, the circumferential surface of the front vertical pipe is fixedly connected with an oil injection hole group, and the oil injection hole group penetrates through the front vertical pipe, and a sealing plug assembly is detachably connected in the oil injection hole group.

[0014] 3. Beneficial effects

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] (1) In the scheme, the steering shaft in the motorcycle front wheel steering system is installed in the front vertical pipe, the front vertical pipe is hingedly connected to the front ends of the main beam and the front connecting plate through a hinge shaft, can be adjusted in angle, after the angle adjustment of the front vertical pipe is completed, the connecting arm makes the positioning hole group correspond to a limiting hole, the positioning hole group and the limiting hole are fixed by cooperation of a bolt, the reinforcing mechanism is secondarily fixed to the front vertical pipe by cooperation of a bolt, the strength of the hinge joint of the front vertical pipe and the main beam and the front connecting plate is improved, the front vertical pipe is stably kept at the current angle, the overall adjustment of the angle between the motorcycle front wheel steering system and the frame main body is realized, the angle and position of the handlebar are changed, and different riding postures of the driver are adapted. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is the front view of the utility model;

[0018] Fig. 2 It is the perspective view of the utility model;

[0019] Fig. 3 It is the explosion view of the utility model.

[0020] Explanation of reference numerals in the drawing:

[0021] 1, main beam; 2, front connecting plate; 3, front vertical pipe; 4, connecting arm; 5, positioning hole group; 6, limiting hole; 71, double-arm connecting rod; 72, connecting hole group; 73, fixing hole; 8, reinforcing rod; 9, limiting assembly; 10, oil injection hole group; 11, sealing plug assembly. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0023] In the description of the utility model, it needs to be explained that the terms 'upper', 'lower', 'inner', 'outer', 'top / bottom end' and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms 'first','second' are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms'mounting', 'provided with','sleeved / connected', 'connected' and the like should be understood broadly, for example, 'connected' can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0025] Embodiment:

[0026] Please refer to Figs. 1-3 A motorcycle frame head structure, comprising a main beam 1, a front connecting plate 2 and a front vertical pipe 3, the front connecting plate 2 is fixedly connected to the bottom end of the main beam 1, the front vertical pipe 3 is hingedly connected to the front end of the main beam 1 and the front connecting plate 2 through a hinge shaft, the circumferential surface of the front vertical pipe 3 is fixedly connected with a connecting arm 4, and the front connecting plate 2 is located on the inner side of the connecting arm 4, a positioning hole group 5 is formed on the connecting arm 4, a plurality of limiting holes 6 are formed on the front connecting plate 2, and the positioning hole group 5 corresponds to the plurality of limiting holes 6, a reinforcing mechanism is arranged between the main beam 1 and the front vertical pipe 3, and the reinforcing mechanism is used for improving the connecting strength between the front vertical pipe 3 and the main beam 1.

[0027] In the embodiment, the main beam 1 and the front connecting plate 2 are the front end structure of the motorcycle main frame, the front vertical pipe 3 is hinged to the front end of the main beam 1 and the front connecting plate 2 for connecting the steering shaft of the motorcycle front wheel steering system, the front vertical pipe 3 drives the connecting arm 4 to rotate by rotating, the positioning hole group 5 cooperates with the fixing bolt to correspond to different limiting holes 6, the front vertical pipe 3 is kept at different connection angles, thereby changing the installation angle of the steering shaft in the motorcycle front wheel steering system, the angle between the whole steering system and the main body of the motorcycle frame is adjusted, thereby changing the position of the handlebar to adapt to the different riding postures of the driver, wherein the angle of the front vertical pipe 3 is adjusted, the strength of the hinge between the front vertical pipe 3 and the main beam 1 and the front connecting plate 2 is improved by the reinforcing mechanism, and the front vertical pipe 3 is further kept stable.

[0028] Specifically, the reinforcing mechanism includes a double-arm connecting rod 71, a plurality of connecting hole groups 72 and a fixing hole 73, the double-arm connecting rod 71 is fixedly connected to the circumferential surface of the front vertical pipe 3, the main beam 1 is located on the inner side of the double-arm connecting rod 71, the plurality of connecting hole groups 72 are all arranged on the double-arm connecting rod 71, and the fixing hole 73 is arranged on the main beam 1 and corresponds to the plurality of connecting hole groups 72.

[0029] In the embodiment, after the angle of the front vertical pipe 3 is adjusted, one connecting hole group 72 on the double-arm connecting rod 71 corresponds to the fixing hole 73, the connecting hole group 72 and the fixing hole 73 cooperate with the fixing bolt, the double-arm connecting rod 71 is fixed on the main beam 1, and the connection strength of the hinge between the front vertical pipe 3 and the main beam 1 and the front connecting plate 2 is improved.

[0030] Specifically, the plurality of connecting hole groups 72 and the plurality of limiting holes 6 are uniformly distributed around the hinge shaft of the hinge between the main beam 1, the front connecting plate 2 and the front vertical pipe 3.

[0031] In the embodiment, the plurality of connecting hole groups 72 and the plurality of limiting holes 6 are equidistantly distributed around the hinge between the main beam 1, the front connecting plate 2 and the front vertical pipe 3, the plurality of connecting hole groups 72 and the plurality of limiting holes 6 have the same distribution angle around the hinge, when the positioning hole group 5 corresponds to one limiting hole 6, one connecting hole group 72 on the double-arm connecting rod 71 corresponds to the fixing hole 73, and the front vertical pipe 3 is conveniently fixed again.

[0032] Specifically, the main beam 1 and the front connecting plate 2 are fixedly connected with a reinforcing rod 8, and the reinforcing rod 8 is located on the lower side of the main beam 1 and the rear side of the front connecting plate 2.

[0033] In the embodiment, the reinforcing rod 8 fixed between the main beam 1 and the front connecting plate 2 can improve the structural strength of the front end of the motorcycle main frame and guarantee the stability between the motorcycle frame and the steering system.

[0034] Specifically, the circumferential surface of the front vertical pipe 3 is fixedly connected with a limiting assembly 9.

[0035] In this embodiment, the limiting component 9 is used to restrict the steering system of the motorcycle to prevent the front wheel of the motorcycle from oversteering.

[0036] Specifically, an oil injection hole assembly 10 is fixedly connected to the circumferential surface of the front riser 3, and the oil injection hole assembly 10 is in communication with the front riser 3. A sealing plug assembly 11 is detachably connected inside the oil injection hole assembly 10.

[0037] In this embodiment, the steering shaft installed in the front riser tube 3 can be lubricated by the oil injection hole group 10, and the sealing plug assembly 11 is used to control the opening and closing of the oil injection hole group 10.

[0038] Working principle: When the rider's riding posture is changed by adjusting the steering system angle, the front stem tube 3 is rotated, which drives the connecting arm 4 and the double arm connecting rod 71 to rotate. The connecting arm 4 makes the positioning hole group 5 correspond to different limit holes 6 and is fixed with bolts. The double arm connecting rod 71 makes one connecting hole group 72 correspond to the fixing hole 73. The connecting hole group 72 and the fixing hole 73 are fixed with bolts to fix the double arm connecting rod 71, thereby fixing the front stem tube 3 at different connection angles, changing the installation angle of the steering shaft in the motorcycle's front wheel steering system, and meeting the riding requirements of different riding postures of the rider.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A motorcycle frame head structure, comprising a main beam (1), a front connecting plate (2), and a front stem (3), characterized in that: The front connecting plate (2) is fixedly connected to the bottom end of the main beam (1). The front riser (3) is movably hinged to the front end of the main beam (1) and the front connecting plate (2) via a hinge shaft. A connecting arm (4) is fixedly connected to the circumferential surface of the front riser (3), and the front connecting plate (2) is located inside the connecting arm (4). A positioning hole group (5) is provided on the connecting arm (4). A plurality of limiting holes (6) are provided on the front connecting plate (2), and the positioning hole group (5) corresponds to the plurality of limiting holes (6). A reinforcing mechanism is provided between the main beam (1) and the front riser (3). The reinforcing mechanism is used to improve the connection strength between the front riser (3) and the main beam (1).

2. The motorcycle frame head structure according to claim 1, characterized in that: The strengthening mechanism includes a double-arm connecting rod (71), multiple connecting hole groups (72) and a fixing hole (73). The double-arm connecting rod (71) is fixedly connected to the circumferential surface of the front riser (3), and the main beam (1) is located inside the double-arm connecting rod (71). Multiple connecting hole groups (72) are opened on the double-arm connecting rod (71), and the fixing hole (73) is opened on the main beam (1), and the fixing hole (73) corresponds to the multiple connecting hole groups (72).

3. The motorcycle frame head structure according to claim 2, characterized in that: The multiple sets of connecting holes (72) and multiple limiting holes (6) are evenly distributed around the hinge axis at the hinge joint of the main beam (1), the front connecting plate (2) and the front riser (3).

4. The motorcycle frame head structure according to claim 3, characterized in that: A reinforcing rod (8) is fixedly connected between the main beam (1) and the front connecting plate (2), and the reinforcing rod (8) is located on the lower side of the main beam (1) and the rear side of the front connecting plate (2).

5. The motorcycle frame head structure according to claim 4, characterized in that: A limit assembly (9) is fixedly connected to the circumferential surface of the front riser (3).

6. The motorcycle frame head structure according to claim 5, characterized in that: The front riser (3) has an oil injection hole assembly (10) fixedly connected to its circumferential surface, and the oil injection hole assembly (10) is in communication with the front riser (3). A sealing plug assembly (11) is detachably connected inside the oil injection hole assembly (10).

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