Motorcycle engine bracket

Abstract

The utility model particularly relates to a motorcycle engine bracket. Comprising a pair of frame large plates and a damping cross rod located between the frame large plates. The frame large plate is composed of a rear wheel frame and a bracket rod fixedly connected with the rear wheel frame, and the two ends of the damping cross rod are fixedly connected with the connecting position of the rear wheel frame and the bracket rod, and is characterized in that the rear wheel frame comprises a rear wheel frame shell protruding towards the outer side and a rear wheel frame cover plate located on the inner side; the end part of the damping cross rod extends into the inner cavity of the rear wheel carrier and is propped against the inner wall of the rear wheel carrier shell; the end, connected with the bracket rod, of the rear wheel frame shell is provided with a connecting bracket groove, and the connecting bracket groove is formed in the axial direction of the bracket rod and semi-wraps the bracket rod. The end, connected with the bracket rod, of the rear wheel frame cover plate is provided with a connecting edge, and the connecting edge is in lap joint with the damping transverse rod and the bracket rod. The motorcycle engine bracket adopting the scheme has the advantages of high welding strength, light dead weight and smoother appearance lines.

Description

Technical Field

[0001] The utility model relates to a motorcycle engine bracket. Background Art

[0002] The motorcycle engine bracket provides stable and reliable support for the engine, and includes a rear wheel frame, a bracket rod 1, a shock-absorbing cross bar 2, a shock-absorbing support ear 4, and an engine fixing ear 5. In the prior art, as Figure 1 、 2 shown, the rear wheel frame adopts a solid rod with a flat-round cross section. The lower end of the rear wheel frame bends towards the middle, and the included angle between the bent part and the rear wheel frame is an obtuse angle. A connecting groove 001 is provided on the bent part, and an arc groove 002 is opened at the end of the bent part. The two ends of the shock-absorbing cross bar are inclined planes 003 for lapping with the connecting groove. The front end of the bracket rod abuts against the shock-absorbing cross bar, and the side wall of the bracket rod fits with the arc groove.

[0003] However, due to the limited area of the end of the bent part, the contact area between the arc groove at the end of the bent part and the bracket rod is small; the contact area between the inclined planes at both ends of the shock-absorbing cross bar and the connecting groove is limited. As Figure 2 shown, the strength of the welded joint is insufficient after welding, which affects the overall strength of the motorcycle engine bracket. The rear wheel frame adopts a solid rod, so the self-weight is heavy. Content of the Utility Model

[0004] The utility model aims to provide a motorcycle engine bracket with high welding strength, light self-weight and smoother appearance lines.

[0005] The motorcycle engine bracket in this solution includes a pair of frame large plates and a shock-absorbing cross bar located between the frame large plates; the frame large plates are composed of a rear wheel frame and a bracket rod fixedly connected thereto. The two ends of the shock-absorbing cross bar are fixedly connected to the connection parts with the rear wheel frame and the bracket rod. The rear wheel frame includes a rear wheel frame shell protruding outward and a rear wheel frame cover plate located inside. The end of the shock-absorbing cross bar extends into the inner cavity of the rear wheel frame and abuts against the inner wall of the rear wheel frame shell; one end of the rear wheel frame shell connected to the bracket rod is provided with a connection support groove, and the connection support groove is arranged along the length direction of the bracket rod and forms a semi-wrap around the bracket rod, that is, the bracket rod is placed in the connection support groove and welded and fixed thereto, increasing the contact area between the rear wheel frame and the bracket rod and greatly improving the welding strength. One end of the rear wheel frame cover plate connected to the bracket rod is provided with a connection edge, and the connection edge overlaps with the shock-absorbing cross bar and the bracket rod. The shock-absorbing cross bar is located between the side of the rear wheel frame shell and the connection edge of the rear wheel frame cover plate, increasing the contact area between the shock-absorbing cross bar and the rear wheel frame, and further improving the welding strength.

[0006] Further, the connecting edge is J-shaped and consists of a smooth section and an arc section; the arc section is adapted to the outer diameter of the shock-absorbing cross bar, and the smooth section is fixedly connected to the bracket rod. The arc section can ensure that the side wall of the shock-absorbing cross bar is closely attached to the end of the bracket rod, and at the same time, the arc section and the side of the rear wheel frame housing wrap the shock-absorbing cross bar, further improving its connection stability.

[0007] Further, it also includes shock-absorbing support lugs fixedly connected to the bracket rod. There are two shock-absorbing support lugs and they are mirror-symmetrically arranged; a connecting through hole is provided in the middle of the shock-absorbing support lug, and the connecting through hole is sleeved on the shock-absorbing cross bar. This prevents the shock-absorbing support lugs from falling off due to vibration.

[0008] Further, the shock-absorbing support lug includes a shock-absorbing connecting part and a fixing part, and a second flanging is provided on the periphery of the shock-absorbing support lug; the fixing part abuts against the bracket rod, and the second flanging located at the fixing part is clamped with the bracket rod.

[0009] Further, it also includes an engine fixing ear fixedly connected to the bracket rod. The engine fixing ear includes a fixing ear body and a strengthening part, and the engine fixing ear is a stepped structure. The fixing ear body is fixedly connected to the side wall of the bracket rod, and the strengthening part is fixedly connected to the shock-absorbing support lug. Since the shock-absorbing support lug itself has a certain thickness, this stepped structure can ensure better fitting of the engine fixing ear with the bracket rod and the shock-absorbing support lug, further improving the welding strength.

[0010] Further, a first flanging for clamping with the rear wheel frame housing is provided on the periphery of the rear wheel frame cover plate, and the first flanging is buckled on the inner side of the rear wheel frame housing.

[0011] Further, the rear wheel frame cover plate is provided with reinforcing rib grooves that can enhance the structural stability. Multiple reinforcing rib grooves can be arranged along the length direction of the rear wheel frame cover plate, increasing the stiffness and compressive resistance of the rear wheel frame, and at the same time reducing deformation and cracking.

[0012] The advantages of the present utility model are: (1) Since the rear wheel frame housing wraps the outer side wall of the bracket rod, the contact area between the rear wheel frame and the bracket rod is increased, greatly improving the welding strength. (2) Since the rear wheel frame cover plate is fixedly connected to the side wall of the shock-absorbing cross bar, the shock-absorbing cross bar can be cut along the radial direction at both ends, reducing the cutting difficulty of the shock-absorbing cross bar and having no waste, reducing the production cost. (3) The appearance line is smooth. The consistency of welded and formed parts is better. (4) Under the same strength, the hollow rear wheel frame uses less material, thus reducing the overall weight. Description of the Drawings

[0013] Figure 1 is a three-dimensional view of a motorcycle engine bracket in the prior art;

[0014] Figure 2 is a structural schematic diagram of a motorcycle engine bracket in the prior art;

[0015] Figure 3 This is a perspective view of the motorcycle engine bracket of the present utility model;

[0016] Figure 4 is Figure 3 an enlarged view of A in

[0017] Figure 5 This is a bottom view of the motorcycle engine bracket of the present utility model;

[0018] Figure 6 is Figure 5 an enlarged view of B in

[0019] Figure 7 This is a side view of the motorcycle engine bracket of the present utility model;

[0020] Figure 8 This is an exploded view of the rear wheel bracket in the motorcycle engine bracket of the present utility model;

[0021] Figure 9 This is a partial structure diagram of the motorcycle engine bracket of the present utility model;

[0022] Figure 10 is Figure 9 an enlarged view of C in

[0023] Figure 11 This is a structure diagram of the shock absorber support ear in the motorcycle engine bracket of the present utility model.

[0024] In the figure, 1 is the bracket rod, 2 is the shock absorber cross bar, 3 is the rear wheel bracket, 3-1 is the rear wheel bracket housing, 3-101 is the side of the rear wheel bracket housing, 3-102 is the connecting bracket groove, 3-2 is the rear wheel bracket cover, 3-201 is the connecting edge, 3-202 is the first flanging, 3-203 is the reinforcing rib groove, 4 is the shock absorber support ear, 4-1 is the second flanging, 4-2 is the connecting through hole, 4-3 is the shock absorber connecting part, 4-4 is the fixing part, 5 is the engine fixing ear, 5-1 is the fixing ear body, and 5-2 is the reinforcing part. Detailed implementation manners

[0025] The following further elaborates on the present utility model in conjunction with the accompanying drawings and specific implementation manners:

[0026] According to Figures 3 to 11As shown in the figure, a motorcycle engine bracket includes a pair of large frame plates and a shock-absorbing crossbar 2 located between the large frame plates. The large frame plates are composed of a rear wheel frame 3 and a bracket rod 1 welded thereto to form a V-shaped structure. Both ends of the shock-absorbing crossbar 2 are connected to the connection points between the rear wheel frame 3 and the bracket rod 1. The rear wheel frame 3 is a hollow structure, which includes a rear wheel frame housing 3-1 protruding outward and a rear wheel frame cover 3-2 located inside. The end of the shock-absorbing crossbar 2 extends into the inner cavity of the rear wheel frame 3 and abuts against the bottom of the rear wheel frame housing 3-1; at the same time, the side wall of the shock-absorbing crossbar 2 abuts against the side of the rear wheel frame housing 3-101. One end of the rear wheel frame housing 3-1 connected to the bracket rod 1 is provided with a connection support groove 3-102 adapted to the bracket rod 1. The connection support groove 3-102 is arranged along the length direction of the bracket rod 1 and forms a semi-wrap around the bracket rod 1. The bracket rod 1 is welded and fixed to the connection support groove 3-102. One end of the rear wheel frame cover 3-2 connected to the bracket rod 1 is provided with a connection edge 3-201, and the connection edge 3-201 is welded to the shock-absorbing crossbar 2 and the bracket rod 1. The shock-absorbing crossbar 2 is located between the side of the rear wheel frame housing 3-101 and the connection edge 3-201 of the rear wheel frame cover 3-2. By adjusting the widths of the connection edge 3-201 and the side of the rear wheel frame housing 3-101, the welding strength between the shock-absorbing crossbar 2 and the rear wheel frame 3 can be increased. Preferably, the connection edge 3-201 is J-shaped, as Figure 10 shown, it is composed of a smooth section and an arc section. The arc section is adapted to the outer diameter of the shock-absorbing crossbar 2, that is, the shock-absorbing crossbar 2 is placed inside the arc section and welded and fixed; the smooth section is welded to the side wall of the bracket rod 1. The radial displacement of the shock-absorbing crossbar 2 is fixed by the arc section, the end of the bracket rod 1, and the side of the rear wheel frame housing 3-101 at the same time; the axial displacement of the shock-absorbing crossbar 2 is fixed by the inner walls of the rear wheel frame housing 3-1 at both ends. The smooth section and the side of the rear wheel frame housing 3-101 clamp the shock-absorbing crossbar 2 in the middle and are welded and fixed, further improving the strength and connection stability. Preferably, the smooth section of the connection edge 3-201 is connected to the connection support groove 3-102. After welding, the appearance line is smooth and beautiful.

[0027] As a further improvement of the present invention, shock-absorbing support ears 4 are provided on the inner side of the bracket rod 1, as Figure 11 shown, there are two shock-absorbing support ears 4 and they are arranged mirror-symmetrically. A connection through-hole 4-2 is provided in the middle of the shock-absorbing support ear 4, and the connection through-hole 4-2 is sleeved on the shock-absorbing crossbar 2. Specifically, the shock-absorbing support ear 4 includes a shock-absorbing connection part 4-3 and a fixing part 4-4. The shock-absorbing connection part 4-3 and the fixing part 4-4 are V-shaped and integrally arranged; a second flanging 4-1 is provided on the periphery of the shock-absorbing support ear 4. The fixing part 4-4 abuts against the bracket rod 1, and the bracket rod 1 is clamped at the second flanging 4-1 of the fixing part 4-4, improving the connection stability of the shock-absorbing support ear 4. The fixing part 4-4 and the second flanging 4-1 are both welded and fixed to the bracket rod 1.

[0028] As a further improvement of the present invention, an engine fixing ear 5 is also welded on the inner side of the bracket rod 1, asFigure 6 , 7 As shown in 7 , the engine fixing ear 5 includes a fixing ear body 5-1 and a reinforcing part 5-2, and the engine fixing ear 5 is a stepped structure. The fixing ear body 5-1 is welded to the side wall of the bracket rod 1, and the reinforcing part 5-2 is welded to the shock-absorbing support ear 4. Specifically, a bending part is integrally provided between the fixing ear body 5-1 and the reinforcing part 5-2, so that the engine fixing ear 5 is in a stepped structure, ensuring better fitting of the engine fixing ear 5 with the bracket rod 1 and the shock-absorbing support ear 4. The shock-absorbing support ear 4, the engine fixing ear 5, and the bracket rod 1 are fixedly welded to each other in pairs, greatly improving the integrity of the above three parts.

[0029] As a further improvement of the present utility model, a first flanging 3-202 for buckling and clamping with the rear wheel frame housing 3-1 is provided on the periphery of the rear wheel frame cover plate 3-2. Specifically, as Figure 4 shown in Figure 4 , the side 3-101 of the rear wheel frame housing is located outside the first flanging 3-202. The rear wheel frame cover plate 3-2 is provided with a reinforcing rib groove 3-203 for enhancing the structural stability. A plurality of reinforcing rib grooves 3-203 can be arranged along the length direction of the rear wheel frame cover plate 3-2, and three are preferably provided in this embodiment.

[0030] The above are only embodiments of the present utility model, and common knowledge such as specific structures and characteristics well known in the art are not described in detail herein. It should be pointed out that for those skilled in the art, without departing from the structure of the present utility model, several deformations and improvements can still be made, which should also be regarded as the protection scope of the present utility model, and these will not affect the implementation effect of the present utility model and the practicality of the patent.

Claims

1. A motorcycle engine bracket, comprising a pair of frame plates and a shock-absorbing cross bar located between the frame plates; the frame plates are composed of a rear wheel frame and a bracket rod fixedly connected thereto, and both ends of the shock-absorbing cross bar are fixedly connected to the connection between the rear wheel frame and the bracket rod, characterized in that: The rear wheel frame includes a rear wheel frame shell protruding outward and a rear wheel frame cover plate located on the inner side, and the end of the shock-absorbing cross bar extends into the inner cavity of the rear wheel frame and abuts against the inner wall of the rear wheel frame shell; the end of the rear wheel frame shell connected to the bracket rod is provided with a connecting bracket, and the connecting bracket is arranged along the axial direction of the bracket rod and half-wraps the bracket rod; the end of the rear wheel frame cover plate connected to the bracket rod is provided with a connecting edge, and the connecting edge overlaps the shock-absorbing cross bar and the bracket rod.

2. The motorcycle engine bracket according to claim 1, characterized in that: The connecting edge is J-shaped and consists of a smooth section and an arc section; the arc section is adapted to the outer diameter of the shock-absorbing cross bar, and the smooth section is fixedly connected to the bracket rod.

3. The motorcycle engine bracket according to claim 1, characterized in that: It also includes a shock-absorbing support ear fixedly connected to the bracket rod, wherein the shock-absorbing support ears are two and are arranged in a mirror image; a connecting through hole is provided in the middle of the shock-absorbing support ear, and the connecting through hole is sleeved on the shock-absorbing cross bar.

4. The motorcycle engine bracket according to claim 3, characterized in that: The shock-absorbing ear comprises a shock-absorbing connecting portion and a fixing portion, and a second flange is arranged on the peripheral side of the shock-absorbing ear; the fixing portion abuts against the bracket rod, and the second flange located at the fixing portion is clamped with the bracket rod.

5. The motorcycle engine bracket according to claim 3, characterized in that: It also includes an engine fixing ear fixedly connected to the bracket rod; the engine fixing ear includes a fixing ear body and a reinforcement part, and the engine fixing ear is a stepped structure; the fixing ear body is fixedly connected to the side wall of the bracket rod, and the reinforcement part is fixedly connected to the shock-absorbing support ear.

6. The motorcycle engine bracket according to claim 1, characterized in that: A first flange which is engaged with the rear wheel frame shell is disposed on the peripheral side of the rear wheel frame cover plate, and the first flange is buckled on the inner side of the rear wheel frame shell.

7. The motorcycle engine bracket according to claim 6, characterized in that: The rear wheel frame cover plate is provided with a reinforcing rib groove which can enhance the structural stability.

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