Dimension-compatible inner battery split mounting structure

Abstract

The utility model discloses a size-compatible inner battery split installation structure which comprises a frame lower tube, a battery, a front fixing plate and a rear fixing plate, a battery containing cavity is formed in the frame lower tube, a front supporting plate and a rear supporting plate are fixed to the bottom of the battery containing cavity, the front fixing plate is fixedly connected with the front supporting plate through screws, and the rear fixing plate is fixedly connected with the rear supporting plate through screws. Two front matching holes distributed in the front-back direction are formed in the positions, close to the front end, of the front fixing plate, two rear matching holes distributed in the front-back direction are formed in the positions, close to the rear end, of the rear fixing plate, two first rear fixing holes distributed in the front-back direction are formed in the positions, close to the front end, of the rear fixing plate, and two second rear fixing holes distributed in the left-right direction are formed in the positions, close to the middle, of the rear fixing plate. The rear supporting plate is provided with two third rear fixing holes, the first rear fixing holes correspond to the third rear fixing holes in a one-to-one mode, two fourth rear fixing holes are formed in the positions, close to the front end, of the rear supporting plate, and the second rear fixing holes correspond to the fourth rear fixing holes in a one-to-one mode. Batteries with two lengths can be installed in a compatible mode, and the development cost of a frame mold can be saved.

Description

Technical Field

[0001] This utility model relates to electric bicycles, and more particularly to a size-compatible internal battery separate installation structure. Background Technology

[0002] Electric-assisted bicycles typically have the battery built inside the downtube of the frame. The downtube has a cutout for battery installation, through which the battery is installed. A battery mounting bracket is welded inside the downtube to connect and secure the battery. Finally, a battery cover is used to cover the cutout to protect the battery and prevent external contaminants from entering.

[0003] In traditional electric-assist bicycle structures, battery installation generally falls into two categories. One involves externally mounting the battery above the downtube of the frame, with two battery mounting brackets welded to the top of the downtube. The battery is then secured to the mounting brackets via clips. The second method involves concealing the battery inside the downtube. This is achieved by inserting the battery through an opening at the top of the downtube, which is then covered by a battery cover. This method offers some degree of internal concealment. The battery cover is a separate cover, distinct from the battery body. Battery support plates are welded to both ends of the downtube opening. With this internally concealed battery installation method, the battery capacity determines the battery length design, meaning that the downtube size of an electric-assist bicycle can only correspond to one battery of a fixed capacity. This results in a one-to-one matching between the battery and the electric-assist bicycle, requiring the development of separate molds and leading to higher manufacturing costs. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an internal battery split installation structure that can accommodate batteries of two different lengths and save on the development cost of frame molds, in order to address the shortcomings of the existing technology.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution.

[0006] A size-compatible internal battery split mounting structure includes a frame downtube, a battery, a front mounting plate, and a rear mounting plate. The frame downtube has a battery receiving cavity. A front support plate and a rear support plate are fixed to the bottom of the battery receiving cavity. The front mounting plate and the front support plate are fixedly connected by screws. The front mounting plate has two front mating holes near its front end, with two front bolts of the battery corresponding to and fixedly connected to the two front mating holes. The rear mounting plate has two rear mating holes near its rear end, with two rear bolts of the battery corresponding to and fixedly connected to the two rear mating holes. The rear mounting plate also has two first rear mounting holes near its front end. The mounting plate has two second rear fixing holes distributed to the left and right near the center. The rear support plate has two third rear fixing holes, with the first and third rear fixing holes corresponding one-to-one. The rear support plate has two fourth rear fixing holes near the front end, with the second and fourth rear fixing holes corresponding one-to-one. When the battery is a first-length battery, the rear mounting plate and the rear support plate are fixedly connected by screws passing through the first and third rear fixing holes. When the battery is a second-length battery, the rear mounting plate and the rear support plate are fixedly connected by screws passing through the second and fourth rear fixing holes. The first length is greater than the second length.

[0007] Preferably, the front fixing plate is provided with two first front fixing holes, and the front support plate is provided with two second front fixing holes. The first front fixing holes and the second front fixing holes correspond one-to-one, and the front fixing plate and the front support plate are fixedly connected by screws passing through the first front fixing holes and the second front fixing holes.

[0008] Preferably, both the front fixing plate and the rear fixing plate are bent in a "Z" shape.

[0009] Preferably, it includes a battery cover that covers the battery receiving cavity and is fixedly connected to the lower tube of the vehicle frame.

[0010] In the size-compatible internal battery split mounting structure disclosed in this utility model, both the front support plate and the rear support plate are fixed to the bottom of the battery receiving cavity. The front fixing plate and the front support plate are fixedly connected by screws. For batteries of different lengths, when the battery is a long battery, the first rear fixing hole on the rear fixing plate is aligned with the third rear fixing hole on the rear support plate, and the rear fixing plate and the rear support plate are fixed with screws. Then, the battery is fixedly connected to the front fixing plate and the rear fixing plate using front and rear bolts, thus completing the battery fixing. When the battery is a short battery, the second rear fixing hole on the rear fixing plate is aligned with the fourth rear fixing hole on the rear support plate, and the rear fixing plate and the rear support plate are fixed with screws. Then, the battery is fixedly connected to the front fixing plate and the rear fixing plate using front and rear bolts, thus completing the battery fixing. Based on the above principle, this utility model can select the corresponding fixing hole position according to the length of the battery, which not only accommodates the installation of batteries of two lengths, but also effectively saves the development cost of the frame mold. Attached Figure Description

[0011] Figure 1 This is a 3D view of the frame downtube;

[0012] Figure 2 This is an exploded view of the internal battery separate installation structure of this utility model;

[0013] Figure 3 This is a 3D view of the front fixing plate;

[0014] Figure 4 This is a 3D view of the rear fixing plate;

[0015] Figure 5 This is a 3D diagram of two battery lengths. Detailed Implementation

[0016] The present invention will now be described in more detail with reference to the accompanying drawings and embodiments.

[0017] This utility model discloses a size-compatible internal battery split mounting structure, combined with Figures 1 to 5As shown, it includes a frame downtube 1, a battery 2, a front mounting plate 3, and a rear mounting plate 4. The frame downtube 1 has a battery housing cavity 10. A front support plate 11 and a rear support plate 12 are fixed to the bottom of the battery housing cavity 10. The front mounting plate 3 and the front support plate 11 are fixedly connected by screws. The front mounting plate 3 has two front mating holes 31 distributed front-to-back near its front end. The two front bolts of the battery 2 correspond one-to-one with and are fixedly connected to the two front mating holes 31. The rear mounting plate 4 has two rear mating holes 41 distributed front-to-back near its rear end. The two rear bolts of the battery 2 correspond one-to-one with and are fixedly connected to the two rear mating holes 41. The rear mounting plate 4 has two first rear mounting holes 40 distributed front-to-back near its front end. The rear mounting plate 4 has a... The rear support plate 12 has two second rear fixing holes 42 distributed on the left and right sides, and two third rear fixing holes 120. The first rear fixing hole 40 corresponds to the third rear fixing hole 120. The rear support plate 12 has two fourth rear fixing holes 121 near the front end. The second rear fixing hole 42 corresponds to the fourth rear fixing hole 121. When the battery 2 is a battery of the first length, the rear fixing plate 4 and the rear support plate 12 are fixedly connected by screws passing through the first rear fixing hole 40 and the third rear fixing hole 120. When the battery 2 is a battery of the second length, the rear fixing plate 4 and the rear support plate 12 are fixedly connected by screws passing through the second rear fixing hole 42 and the fourth rear fixing hole 121. The first length is greater than the second length.

[0018] In the above structure, both the front support plate 11 and the rear support plate 12 are fixed to the bottom of the battery receiving cavity 10. The front fixing plate 3 is fixedly connected to the front support plate 11 by screws. For batteries 2 of different lengths, when the battery 2 is a long battery, the first rear fixing hole 40 on the rear fixing plate 4 is aligned with the third rear fixing hole 120 on the rear support plate 12, and the rear fixing plate 4 is fixed to the rear support plate 12 with screws. Then, the battery 2 is fixedly connected to the front fixing plate 3 and the rear fixing plate 4 with front and rear bolts, thereby completing the battery fixing. When the battery 2 is a short battery, the second rear fixing hole 42 on the rear fixing plate 4 is aligned with the fourth rear fixing hole 121 on the rear support plate 12, and the rear fixing plate 4 is fixed to the rear support plate 12 with screws. Then, the battery 2 is fixedly connected to the front fixing plate 3 and the rear fixing plate 4 with front and rear bolts, thereby completing the battery fixing. Based on the above principle, this utility model can select the corresponding fixing hole position according to the length of the battery 2, which not only accommodates the installation of batteries of two lengths, but also effectively saves the development cost of the frame mold.

[0019] Combination Figure 2 and Figure 3 As shown, in order to reliably fix the front fixing plate 3, in this embodiment, the front fixing plate 3 is provided with two first front fixing holes 30, and the front support plate 11 is provided with two second front fixing holes 110. The first front fixing holes 30 and the second front fixing holes 110 correspond one-to-one. The front fixing plate 3 and the front support plate 11 are fixedly connected by screws passing through the first front fixing holes 30 and the second front fixing holes 110.

[0020] Combination Figure 3 and Figure 4 As shown, in this embodiment, both the front fixing plate 3 and the rear fixing plate 4 are bent in a "Z" shape. After bending, the rear end of the front fixing plate 3 is raised, with both front mating holes 31 located at the raised end. Similarly, the rear end of the rear fixing plate 4 is raised, with both rear mating holes 41 located at the raised end. The raised portions of the front and rear fixing plates provide space for the front and rear bolts to pass through and be screwed in, thus achieving reliable installation.

[0021] To protect the battery, please refer to [link / reference]. Figure 1 and Figure 2 This embodiment includes a battery cover 5, which covers the battery receiving cavity 10 and is fixedly connected to the lower tube 1 of the vehicle frame.

[0022] In practical application, this invention features a CNC-machined opening above the lower tube of the frame, serving as a channel for battery placement. The lower tube connects to the head tube and motor mount at the front and rear, acting as a concealed battery compartment. The battery is introduced into the lower tube's interior through the opening at its top. Front and rear support plates are welded to the top and bottom of the lower tube. A key mounting hole on the right side of the lower tube's front end allows for easy key-operated battery control. The front and rear battery support plates are screwed onto the front and rear battery mounting plates, which are Z-shaped with vertical and horizontal mounting holes. The rear battery mounting plate's mounting holes can accommodate batteries of different capacities and sizes. After the motor and motor mount are bolted together, a motor cover is used to secure the motor mount to its corresponding mounting holes, preventing the battery's bottom from being scratched by external objects. In addition, the horizontal and vertical mounting holes of the "Z"-shaped mounting plate have a special function. By using different mounting combinations of hole positions, a frame design can be made compatible with batteries of different capacities, thereby saving frame development mold costs.

[0023] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. All modifications, equivalent substitutions or improvements made within the technical scope of the present utility model should be included within the scope of protection of the present utility model.

Claims

1. A size-compatible internal battery sub-mount structure, characterized by, The application relates to a vehicle frame, which comprises a vehicle frame lower pipe (1), a battery (2), a front fixing plate (3) and a rear fixing plate (4), wherein a battery accommodating cavity (10) is formed in the vehicle frame lower pipe (1), the bottom of the battery accommodating cavity (10) is fixed with a front supporting plate (11) and a rear supporting plate (12), the front fixing plate (3) is fixedly connected with the front supporting plate (11) through screws, two front matching holes (31) are arranged on the front fixing plate (3) near the front end, two front bolts of the battery (2) are fixedly connected with the two front matching holes (31) in one-to-one correspondence, two rear matching holes (41) are arranged on the rear fixing plate (4) near the rear end, two rear bolts of the battery (2) are fixedly connected with the two rear matching holes (41) in one-to-one correspondence, two first rear fixing holes (40) are arranged on the rear fixing plate (4) near the front end in front and back distribution, two second rear fixing holes (42) are arranged on the rear fixing plate (4) near the middle in left and right distribution, two third rear fixing holes (120) are arranged on the rear supporting plate (12), the first rear fixing holes (40) and the third rear fixing holes (120) are in one-to-one correspondence, two fourth rear fixing holes (121) are arranged on the rear supporting plate (12) near the front end, the second rear fixing holes (42) and the fourth rear fixing holes (121) are in one-to-one correspondence, when the battery (2) is a first length battery, the rear fixing plate (4) and the rear supporting plate (12) are fixedly connected through screws penetrating the first rear fixing holes (40) and the third rear fixing holes (120), when the battery (2) is a second length battery, the rear fixing plate (4) and the rear supporting plate (12) are fixedly connected through screws penetrating the second rear fixing holes (42) and the fourth rear fixing holes (121), and the first length is greater than the second length.

2. The dimensionally compatible internal battery subassembly mounting structure of claim 1, wherein, Two first front fixing holes (30) are arranged on the front fixing plate (3), two second front fixing holes (110) are arranged on the front supporting plate (11), the first front fixing holes (30) and the second front fixing holes (110) are in one-to-one correspondence, and the front fixing plate (3) and the front supporting plate (11) are fixedly connected through screws penetrating the first front fixing holes (30) and the second front fixing holes (110).

3. The dimensionally compatible internal battery subassembly mounting structure of claim 1, wherein, The front fixing plate (3) and the rear fixing plate (4) are both "Z"-shaped.

4. The dimensionally compatible internal battery subassembly mounting structure of claim 1, wherein, The application further relates to a battery cover (5), which covers the battery accommodating cavity (10) and is fixedly connected with the vehicle frame lower pipe (1).

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