Frame for electric bicycle

Abstract

The utility model relates to the technical field of bicycle frames, in particular to a bicycle frame for an electric bicycle, which comprises a bicycle frame main body, a saddle support frame and a rear fork assembly, the saddle support frame is connected with the bicycle frame main body and the rear fork assembly, and the rear fork assembly is connected with a suspension mechanism. The shock-proof mechanism is at least partially located between the saddle supporting frame and the frame body, the rear fork assembly comprises a first rear fork and a second rear fork, the ends of the first rear fork and the second rear fork are connected, the other end of the second rear fork is connected with the frame body, and the other end of the first rear fork is connected with the shock-proof mechanism. Due to the fact that at least part of the shock-proof mechanism is located between the saddle supporting frame and the frame body, the shock-proof mechanism is far away from the rear wheel, and the situation that the rear wheel brings muddy water, silt and other foreign matter into the shock-proof mechanism in the traveling process, the shock-proof mechanism is damaged, and the service life of the shock-proof mechanism is affected is avoided.

Description

Technical Field

[0001] The present disclosure relates to the technical field of vehicle frames, and in particular to a vehicle frame for an electric bicycle. Background Art

[0002] With the release of the new national standard for electric bicycle safety technical specifications, new electric bicycles will require a completely new overall layout design during production to standardize all subsequently developed models and ensure they meet the requirements of the national standard. The electric bicycle frame is a crucial component of the electric bicycle, directly impacting the overall structural strength, operational stability, safety, and load-bearing capacity of the vehicle. Currently, new national standard electric bicycles on the market have reduced frame strength to reduce costs due to limited motor speed and slower mileage. While this does not affect normal use, accidental collisions can cause serious damage to the lower-strength frame, posing a serious safety hazard if not detected in a timely manner.

[0003] In order to improve the comfort of electric bicycles, a shock-absorbing mechanism is usually provided on the frame. For example, Chinese utility model patent No. 202321792537.7 discloses an integrated frame for an electric bicycle, wherein the frame is formed by integral casting of aluminum alloy, and a rear shock absorber is installed between the reinforcing beam connecting the rear wheel and the frame and the frame. When the frame is integrated, a shock absorber is also installed to improve the comfort of the electric bicycle when in use. The rear shock absorber is installed in front of the rear wheel, so that the rear shock absorber is directly affected by the external environment. For example, mud, water, small particles of sand and gravel enter the interior of the rear shock absorber under the action of the rear wheel, thereby affecting the service life of the rear shock absorber. Utility Model Content

[0004] In view of the deficiencies or problems existing in the prior art, the present disclosure provides a frame for an electric bicycle, which has high safety performance and good shock absorption effect.

[0005] The technical solution adopted by the present disclosure to solve the above-mentioned technical problems is: a frame for an electric bicycle, including a frame body, a seat support frame and a rear fork assembly, the seat support frame being connected to the frame body and the rear fork assembly respectively, the rear fork assembly being connected to a shock-absorbing mechanism, and the shock-absorbing mechanism being at least partially located between the seat support frame and the frame body.

[0006] As a preferred embodiment, the rear fork assembly includes a first rear fork and a second rear fork connected at their ends, the other end of the second rear fork is connected to the frame body, and the other end of the first rear fork is connected to the shock absorbing mechanism.

[0007] As a preferred embodiment, the shock absorption mechanism includes a shock absorber and a shock absorption connecting frame, a connecting rod is provided between the frame body and the seat support frame, one end of the shock absorber is connected to the connecting rod, and the other end of the shock absorber is connected to the shock absorption connecting frame, and the shock absorption connecting frame is connected to the first rear fork.

[0008] As a preferred embodiment, the first rear fork includes a first connecting tube and a second connecting tube with a hollow structure, and the shock-absorbing connecting frame is provided with two first connecting parts, which are respectively connected to the first connecting tube and the second connecting tube.

[0009] As a preferred embodiment, the two first connecting parts are respectively connected to the first connecting pipe and the second connecting pipe by bolts.

[0010] As a preferred embodiment, the shock-absorbing connecting frame includes a connecting frame, two first connecting parts are arranged on one side of the connecting frame, and two second connecting parts are arranged on the other side of the connecting frame. The shock absorber is connected to the second connecting parts through a first connecting piece.

[0011] As a preferred embodiment, the second connecting part is a bump structure, the shock absorber is arranged between the two bump structures, a first through hole is opened on the bump structure, a second through hole is opened on the shock absorber, and the first connecting member passes through the first through hole and the second through hole to connect the shock absorbing connecting frame with the shock absorber.

[0012] As a preferred embodiment, a third through hole is provided on the connecting frame, the seat support frame is located between the two first connecting parts, a connecting rib is provided on the seat support frame, a fourth through hole is provided on the connecting rib, and the second connecting member passes through the third through hole and the fourth through hole to connect the connecting frame to the seat support frame.

[0013] As a preferred embodiment, the frame body is further connected to a front fork assembly, the front wheel is mounted on the front fork assembly, and the rear wheel is mounted on the rear fork assembly.

[0014] As a preferred embodiment, the frame body is obliquely arranged between the front fork assembly and the rear fork assembly, and an installation compartment is further provided on the frame body, and the installation compartment is used to install the power supply assembly.

[0015] Compared with existing products, since the shock-absorbing mechanism is at least partially located between the seat support frame and the frame body, the shock-absorbing mechanism is arranged away from the rear wheel, thereby preventing the rear wheel from bringing mud, water, sand and other foreign objects into the interior of the shock-absorbing mechanism during driving, causing damage to the shock-absorbing mechanism and affecting the service life of the shock-absorbing mechanism; at the same time, the seat support frame and the frame body play a protective role to a certain extent, preventing external foreign objects from damaging the shock-absorbing mechanism; in addition, the shock-absorbing mechanism is at least partially located between the seat support frame and the frame body, which further expands the space behind the seat support frame, that is, the passenger space of the rear seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present application will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present application. In addition, unless otherwise specified, the drawings are merely schematic representations of the composition or structure of the described objects and may contain exaggerated representations. The drawings are not necessarily drawn to scale.

[0017] Figure 1 This is a schematic structural diagram of a frame for an electric bicycle disclosed herein;

[0018] Figure 2 This disclosure Figure 1 A partial enlarged view of point A in the middle;

[0019] Figure 3 It is a structural schematic diagram of the shock-absorbing connecting frame disclosed in the present invention.

[0020] Description of reference numerals:

[0021] 1. Frame body; 2. Seat support frame; 3. First rear fork; 4. Second rear fork; 5. Shock absorber; 6. Shock absorber connecting frame; 7. First connecting part; 8. Second connecting part; 9. First connecting member; 10. Connecting rib; 11. Connecting rod; 13. Mounting compartment. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solutions of the present disclosure, the present disclosure is described in detail, clearly, and completely in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure and are not intended to limit the present disclosure.

[0023] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms cannot be understood as limiting the present invention.

[0024] Please see Figure 1-Figure 3As shown, the present disclosure provides a frame for an electric bicycle, including a frame body 1, a seat support frame 2 and a rear fork assembly. The seat of the electric bicycle is installed above the seat support frame 2, and the seat support frame 2 is respectively connected to the frame body 1 and the rear fork assembly. The rear fork assembly is connected to a shock-absorbing mechanism, and the shock-absorbing mechanism is at least partially located between the seat support frame 2 and the frame body 1, so that the shock-absorbing mechanism is arranged away from the rear wheel, thereby preventing the rear wheel from bringing mud, water, sand and other foreign objects into the interior of the shock-absorbing mechanism during driving, causing damage to the shock-absorbing mechanism and affecting the service life of the shock-absorbing mechanism; at the same time, the seat support frame 2 and the frame body 1 play a protective role to a certain extent, preventing external foreign objects from damaging the shock-absorbing mechanism; in addition, the shock-absorbing mechanism is at least partially located between the seat support frame 2 and the frame body 1, which further expands the space behind the seat support frame 2, that is, the passenger space of the rear seat.

[0025] Furthermore, the rear fork assembly includes a first rear fork 3 and a second rear fork 4 connected at their ends. The other end of the second rear fork 4 is connected to the frame body 1, and the other end of the first rear fork 3 is connected to the shock absorber mechanism. Specifically, the first rear fork 3 is arranged upwardly and tilted, and is arranged above the second rear fork 4. This makes the first rear fork 3, the second rear fork 4, and the seat support frame 2 form a roughly triangular structure, thereby making the entire electric bicycle structure more stable.

[0026] Furthermore, the shock-absorbing mechanism includes a shock absorber 5 and a shock-absorbing connecting frame 6. A connecting rod 11 is provided between the frame body 1 and the seat support frame 2. One end of the shock absorber 5 is connected to the connecting rod 11, and the other end of the shock absorber 5 is connected to the shock-absorbing connecting frame 6. The shock-absorbing connecting frame 6 is connected to the first rear fork 3. Specifically, the connecting rod 11 is an arc-shaped structure, and an upward protrusion structure is provided on the arc-shaped structure. The protrusion structure is provided with a first connecting hole. The shock absorber 5 is provided with a second connecting hole. A bolt passes through the first connecting hole and the second connecting hole to connect the shock absorber 5 to the connecting rod 11. The provision of the protrusion structure provides a larger operating space when installing and removing the shock absorber 5, thereby facilitating the installation and removal of the shock absorber 5. In addition, the provision of the protrusion structure avoids the adverse effect of drilling a hole in the middle of the connecting rod 11 on its structural strength, thereby enhancing the structural strength of the connecting rod 11.

[0027] In one embodiment of the present disclosure, the first rear fork 3 includes a first connecting tube and a second connecting tube with a hollow structure, and the shock-absorbing connecting frame 6 is provided with two first connecting parts 7, which are respectively connected to the first connecting tube and the second connecting tube by bolts.

[0028] Furthermore, the shock-absorbing connecting frame 6 includes a connecting skeleton, two first connecting parts 7 are arranged in an "eight" shape on one side of the connecting skeleton, and two second connecting parts 8 are provided on the other side of the connecting skeleton. The shock absorber 5 is connected to the second connecting parts 8 through a first connecting member 9. Specifically, the second connecting part 8 is a convex structure, and the shock absorber 5 is arranged between the two convex structures. The convex structure is provided with a first through hole, and the shock absorber 5 is provided with a second through hole. The first connecting member 9 is a bolt, and the bolt passes through the first through hole and the second through hole to connect the shock-absorbing connecting frame 6 to the shock absorber 5. In this way, the shock absorber 5 is arranged obliquely downward on the connecting rod 11 and the shock-absorbing connecting frame 6. The shock absorber 5 is respectively connected to the connecting rod 11 and the shock-absorbing connecting frame 6 by bolts, so that the shock absorber 5 can be easily disassembled, which facilitates the maintenance and replacement of the shock absorber 5.

[0029] Preferably, a third through-hole is provided on the connecting frame, the seat support frame 2 is positioned between the two first connecting portions 7, a connecting rib 10 is provided on the seat support frame 2, and a fourth through-hole is provided on the connecting rib 10. A second connecting member passes through the third and fourth through-holes to connect the connecting frame to the seat support frame 2. The second connecting member is a bolt, and the shock-absorbing connecting frame 6 acts as a lever. As the connecting frame vibrates with the entire frame, the second connecting member acts as a fulcrum, ensuring that the shock-absorbing mechanism and, by extension, the entire body of the electric bicycle remain as balanced as possible, thus providing longitudinal stability.

[0030] In one embodiment of the present disclosure, the frame body 1 is further connected to a front fork assembly, the front wheel is mounted on the front fork assembly, and the rear wheel is mounted on the rear fork assembly. The frame body 1 is tilted and disposed between the front and rear fork assemblies. The frame body 1 is also provided with a mounting compartment 13 for mounting a power supply assembly. Preferably, the power supply assembly is a battery.

[0031] The present application has been described in detail above. Specific examples have been used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is intended only to facilitate understanding of the present application and its core concepts. It should be noted that, without departing from the principles of the present application, a number of improvements and modifications may be made to the present application by a person skilled in the art, and such improvements and modifications shall fall within the scope of protection of the claims of the present application.

Claims

1. A frame for an electric bicycle, characterized in that: The bicycle comprises a frame body (1), a seat support frame (2) and a rear fork assembly, wherein the seat support frame (2) is connected to the frame body (1) and the rear fork assembly respectively, and the rear fork assembly is connected to a shock absorbing mechanism, wherein at least part of the shock absorbing mechanism is located between the seat support frame (2) and the frame body (1).

2. The electric bicycle frame according to claim 1, wherein: The rear fork assembly comprises a first rear fork (3) and a second rear fork (4) connected at their ends, the other end of the second rear fork (4) being connected to the frame body (1), and the other end of the first rear fork (3) being connected to the shock absorbing mechanism.

3. The electric bicycle frame according to claim 2, wherein: The shock-absorbing mechanism comprises a shock absorber (5) and a shock-absorbing connecting frame (6); a connecting rod (11) is provided between the frame body (1) and the seat support frame (2); one end of the shock absorber (5) is connected to the connecting rod (11); the other end of the shock absorber (5) is connected to the shock-absorbing connecting frame (6); and the shock-absorbing connecting frame (6) is connected to the first rear fork (3).

4. The electric bicycle frame according to claim 3, wherein: The first rear fork (3) comprises a first connecting tube and a second connecting tube of a hollow structure, and the shock-absorbing connecting frame (6) is provided with two first connecting parts (7), and the two first connecting parts (7) are respectively connected to the first connecting tube and the second connecting tube.

5. The electric bicycle frame according to claim 4, wherein: The two first connecting parts (7) are respectively connected to the first connecting pipe and the second connecting pipe via bolts.

6. The electric bicycle frame according to claim 4, wherein: The shock-absorbing connecting frame (6) comprises a connecting frame, two first connecting parts (7) are arranged on one side of the connecting frame, two second connecting parts (8) are arranged on the other side of the connecting frame, and the shock absorber (5) is connected to the second connecting part (8) via a first connecting member (9).

7. The electric bicycle frame according to claim 6, wherein: The second connecting portion (8) is a convex structure, the shock absorber (5) is arranged between the two convex structures, a first through hole is provided on the convex structure, a second through hole is provided on the shock absorber (5), and the first connecting member (9) passes through the first through hole and the second through hole to connect the shock absorbing connecting frame (6) and the shock absorber (5).

8. The electric bicycle frame according to claim 6, wherein: A third through hole is provided on the connecting frame, the seat support frame (2) is located between the two first connecting parts (7), a connecting rib (10) is provided on the seat support frame (2), a fourth through hole is provided on the connecting rib (10), and a second connecting member passes through the third through hole and the fourth through hole to connect the connecting frame to the seat support frame (2).

9. The electric bicycle frame according to claim 7, wherein: The frame body (1) is also connected to a front fork assembly, the front wheel is mounted on the front fork assembly, and the rear wheel is mounted on the rear fork assembly.

10. The electric bicycle frame according to claim 9, wherein: The frame body (1) is obliquely arranged between the front fork assembly and the rear fork assembly. An installation compartment (13) is also provided on the frame body (1), and the installation compartment (13) is used for installing a power supply assembly.

Images