Rear shock absorber mounting structure of two-wheeled electric motorcycle frame

Abstract

This utility model relates to a rear shock absorber mounting structure for a two-wheeled electric motorcycle frame, used to connect the main side tube of the frame and the vehicle's shock absorber. The mounting seat includes a first hanger and a second hanger, which are partially fitted together. A clamping space is formed on the side of the first and second hangers facing the main side tube. The first and second hangers are bent in the same direction, but at different bending angles; the difference in bending angle is the angle of the clamping space. This utility model uses a shock absorber mounting seat composed of an outer shock absorber hanger and an inner shock absorber hanger welded together, applied to the main side tube of the frame. Under stress, external forces are transmitted sequentially through the shock absorber, connecting bolts, and the shock absorber mounting seat to the main side tube, offering advantages in both cost reduction and reliable rigidity.

Description

Technical Field

[0001] This utility model relates to the technical field of shock absorption structure for two-wheeled electric vehicles, and in particular to a rear shock absorption mounting structure for a two-wheeled electric motorcycle frame. Background Technology

[0002] There are two common types of rear shock absorber mounting structures for existing electric motorcycle frames:

[0003] Style 1: The mounting base is a welded assembly, which provides good stress on the frame and good overall riding safety; however, it is more expensive.

[0004] Style 2: The mounting base is a single stamped part; the cost is reduced by about 50% compared to Style 1, but the frame stress is not as good as Style 1.

[0005] Both of these existing frames have their own advantages and disadvantages, making it difficult to balance production costs and product quality. Utility Model Content

[0006] In response to the shortcomings of the existing production technology, the applicant provides a structurally sound rear shock absorber mounting structure for a two-wheeled electric motorcycle frame, which combines the advantages of stable stress distribution and reduced cost.

[0007] The technical solution adopted in this utility model is as follows:

[0008] A rear shock absorber mounting structure for a two-wheeled electric motorcycle frame is disclosed, used to connect the main side tube of the frame and the vehicle's shock absorber. The mounting base includes a first hanger and a second hanger, which are partially fitted together. Clamping spaces are formed on the side of the first and second hangers facing the main side tube.

[0009] The first and second lifting lugs are bent in the same direction, and the bending angles of the two are different. The difference in bending angle is the size of the angle between the clamping spaces.

[0010] As a further improvement to the above technical solution:

[0011] Of the first and second hangers, the hanger with the larger bending angle faces outwards from the vehicle body.

[0012] The first lug includes:

[0013] The first fitting part is attached to the second hanging lug.

[0014] The first bend extends from the fitting part towards the main tube side.

[0015] The first extension extends from the side of the first bend away from the mating part.

[0016] The extension and the bending portion are set at an angle, and the bending direction of the extension is based on the bending direction of the bending portion, which is opposite to the bending direction of the bending portion based on the fitting portion.

[0017] The lifting lugs with a larger bending angle have reinforcing ribs at the bend.

[0018] The second lug includes:

[0019] The second fitting part is attached to the first lug.

[0020] The second bend extends from the fitting part towards the main tube side.

[0021] The second extension extends from the side of the second bend away from the fitting part.

[0022] The connection structure between the first bonding part and the second bonding part includes a plug weld connection and a fastening connection.

[0023] The connection point between the shock absorber and the mounting base is the fastening connection between the first and second contact parts.

[0024] The mounting brackets are symmetrically positioned at the rear of the vehicle.

[0025] The mounting bracket is installed perpendicular to the main side pipe on which it is located.

[0026] The beneficial effects of this utility model are as follows:

[0027] This utility model uses a shock-absorbing mounting base composed of shock-absorbing outer hangers and shock-absorbing inner hangers welded together. It is used on the main side tube of the vehicle frame, so that the external force under stress is transmitted to the main side tube in sequence through the shock absorber, connecting bolts, and shock-absorbing mounting base. It has the advantages of both cost reduction and reliable rigidity. Attached Figure Description

[0028] Figure 1 This is a rear view of the mounting bracket of this application applied to the vehicle frame.

[0029] Figure 2 This is a side view of the mounting bracket of this application applied to the vehicle frame.

[0030] Figure 3 This is a schematic diagram of the mounting base structure of this application.

[0031] Figure 4 The force test diagrams for the mounting base of this application are compared with those of two other sets of comparative force tests.

[0032] The components include: 1. Main side tube; 2. Shock absorber; 3. First lifting lug; 4. Second lifting lug; 5. Reinforcing rib; 6. Plug weld connection; 7. Fastening connection.

[0033] 301. First fitting portion; 302. First bending portion; 303. First extension portion;

[0034] 401. Second fitting part; 402. Second bending part; 403. Second extension part. Detailed Implementation

[0035] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0036] like Figures 1-4 As shown in the figure, the rear shock absorber mounting structure of the two-wheeled electric motorcycle frame in this embodiment is used to connect the main side tube 1 of the frame and the vehicle shock absorber 2. The mounting base includes a first lug 3 and a second lug 4. The first lug 3 and the second lug 4 are partially fitted together, and a clamping space is formed on the side of the first lug 3 and the second lug 4 facing the main side tube 1.

[0037] The first lifting lug 3 and the second lifting lug 4 are bent in the same direction, and the bending angles of the two are different. The difference in bending angle is the size of the angle between the clamping spaces.

[0038] Of the first hanger 3 and the second hanger 4, the hanger with the larger bending angle faces outwards from the vehicle body.

[0039] The first lug 3 includes:

[0040] The first fitting part 301 is attached to the second hanging lug 4.

[0041] The first bending portion 302 bends out from the fitting portion toward the main side tube 1.

[0042] The first extension 303 extends out from the side of the first bend 302 away from the mating part.

[0043] The extension and the bending part are set at an angle, and the bending direction of the extension is based on the bending direction of the bending part, which is opposite to the bending direction of the bending part based on the fitting part.

[0044] The lifting lug with a larger bending angle has a reinforcing rib 5 at the bending point.

[0045] The second lug 4 includes:

[0046] The second fitting part 401 is attached to the first hanging lug 3.

[0047] The second bending portion 402 bends out from the fitting portion toward the main side tube 1.

[0048] The second extension 403 extends out from the side of the second bend 402 away from the mating part.

[0049] The connection structure between the first bonding part 301 and the second bonding part 401 includes a plug weld connection 6 and a fastening connection 7.

[0050] The connection point between the shock absorber 2 and the mounting base is the fastening connection 7 between the first fitting part 301 and the second fitting part 401.

[0051] The mounting brackets are symmetrically positioned at the rear of the vehicle.

[0052] The mounting base is installed perpendicular to the main side pipe 1 where it is located.

[0053] The specific structure of this application, and the experimental results comparing it with other existing structures, are as follows:

[0054] As attached Figure 1 and Figure 2 As shown, the mounting bracket is connected to the upper end of the rear main side tube 1 and is located on the side of the main side tube 1 facing the ground. The mounting bracket is set perpendicular to the main side tube 1.

[0055] Reference Figure 3 The mounting base of this application is provided in two sets. Each set of mounting bases is formed by welding the first lifting lug 3 and the second lifting lug 4 together to form a shock-absorbing mounting base, which is then welded to the main side tube 1 of the frame.

[0056] During installation, insert the bolt into the hole of the fastening connection 7 of the mounting base, and then tighten the nut to install the shock absorber 2. The force transmitted from the ground will be transmitted to the main side tube 1 of the frame through the shock absorber 2, the bolt, and the mounting base.

[0057] In this embodiment, both the first lifting lug 3 and the second lifting lug 4 are sheet components. Figure 3 The piece with a larger bending angle on the right side is the first lifting lug 3, and the other piece is the second lifting lug 4. Two plug-weld holes are provided at the point where the first lifting lug 3 and the second lifting lug 4 meet, forming the plug-weld connection 6. A fastening hole for fasteners is provided between the two plug-weld connection 6, which is the fastening connection position.

[0058] Comparative Example 1:

[0059] In Comparative Example 1, the mounting base is assembled by welding the shock absorber lugs and bushings into a shock absorber mounting base, which is then welded to the main side tube 1 of the frame. The shock absorber 2 is inserted into the shock absorber mounting base by bolts, and then the nuts are tightened. The force transmitted from the ground will be transmitted to the main side tube 1 of the frame through the shock absorber 2, bolts, and shock absorber mounting base.

[0060] The difference in Comparative Example 1 is that it has a bushing.

[0061] Comparative Example 2:

[0062] In Comparative Example 2, the mounting base is welded to the cross tube of the frame by shock absorber lugs; the cross tube of the frame is then welded to the main side tube 1 of the frame; the shock absorber 2 is inserted into the shock absorber lugs by bolts, and then the nuts are tightened; the force transmitted from the ground will be transmitted to the cross tube of the frame through the shock absorber 2, bolts, and shock absorber lugs; and finally to the main side tube 1 of the frame.

[0063] The difference between Comparative Example 2 and this application is that it has a frame cross tube.

[0064] As shown in the CAE analysis and calculation diagram, under torsional conditions, the frame cross tube (15) of Comparative Example 2 has the greatest stress; the stress on the frame cross tube (15) of Comparative Example 1 and this application is basically unchanged; therefore, it is determined that the stress distribution of the frame and the overall riding safety performance of the present invention can achieve the expected results; at the same time, the cost is reduced by half, which also achieves the expected results.

[0065] The experimental comparison results are shown in the table below:

[0066]

[0067] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A rear shock absorber mounting structure for a two-wheeled electric motorcycle frame, characterized in that: Used to connect the main side tube (1) of the frame and the vehicle shock absorber (2), the mounting bracket includes a first lug (3) and a second lug (4). The first lug (3) and the second lug (4) are partially fitted together, and the first lug (3) and the second lug (4) have clamping spaces formed on the side facing the main side tube (1). The first lifting lug (3) and the second lifting lug (4) are bent in the same direction, and the bending angles of the two are different. The difference in bending angle is the size of the angle of the clamping space.

2. The rear shock absorber mounting structure for a two-wheeled electric motorcycle frame as described in claim 1, characterized in that: In the first hanger (3) and the second hanger (4), the hanger with the larger bending angle faces the outside of the vehicle body.

3. The rear shock absorber mounting structure for a two-wheeled electric motorcycle frame as described in claim 1, characterized in that: The first lug (3) includes: The first fitting part (301) is attached to the second lug (4). The first bend (302) bends out from the fitting part toward the main side tube (1). The first extension (303) extends from the side of the first bend (302) away from the mating part.

4. The rear shock absorber mounting structure for a two-wheeled electric motorcycle frame as described in claim 3, characterized in that: The extension and the bending portion are set at an angle, and the bending direction of the extension is based on the bending direction of the bending portion, which is opposite to the bending direction of the bending portion based on the fitting portion.

5. The rear shock absorber mounting structure for a two-wheeled electric motorcycle frame as described in claim 2, characterized in that: The lifting lug with a larger bending angle has a reinforcing rib at the bending point (5).

6. The rear shock absorber mounting structure for a two-wheeled electric motorcycle frame as described in claim 2, characterized in that: The second lug (4) includes: The second fitting part (401) is attached to the first lug (3). The second bend (402) bends out from the fitting part toward the main side tube (1). The second extension (403) extends from the side of the second bend (402) away from the mating part.

7. The rear shock absorber mounting structure for a two-wheeled electric motorcycle frame as described in claim 3 or 6, characterized in that: The connection structure between the first bonding part (301) and the second bonding part (401) includes a plug weld connection (6) and a fastening connection (7).

8. The rear shock absorber mounting structure for a two-wheeled electric motorcycle frame as described in claim 7, characterized in that: The connection point between the shock absorber (2) and the mounting base is the fastening connection (7) between the first fitting part (301) and the second fitting part (401).

9. The rear shock absorber mounting structure for a two-wheeled electric motorcycle frame as described in claim 1, characterized in that: The mounting brackets are symmetrically positioned at the rear of the vehicle.

10. The rear shock absorber mounting structure for a two-wheeled electric motorcycle frame as described in claim 1, characterized in that: The mounting base is installed perpendicular to the main side pipe (1) where it is located.

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