Motor seat of power-assisted bicycle

Abstract

The utility model discloses a motor seat of a power-assisted bicycle, which is characterized in that the motor seat is provided with a main shell extending longitudinally, a middle shaft hole used for arranging a crank is transversely arranged on the main shell, a front fork interface is arranged at the front end of the main shell, the front fork interface is positioned at the front part of the middle shaft hole, and the front fork interface is positioned at the rear part of the middle shaft hole. A seat connector is arranged on the upper portion of the main shell and located on the upper portion of the middle shaft hole. The seat interface and the front fork interface are compactly and stably arranged at the front part of the shell, and the bin opening for accommodating the power assisting equipment is formed in the bottom in a matched manner, so that the motor seat can be formed by adopting an aluminum alloy integrated liquid forging process, and the part strength is ensured while the weight is reduced.

Description

Technical Field

[0001] This utility model relates to the field of power-assisted bicycles, and in particular to a motor mount for power-assisted bicycles. Background Technology

[0002] Unlike traditional bicycles, electric-assist bicycles require a motor located near the sprocket, increasing the frame weight and raising the center of gravity. This design increases the difficulty of riding and reduces the overall energy efficiency per unit distance. Furthermore, conventional frames are welded from profiles, resulting in low production efficiency, inconsistent appearance, and unstable process control. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the purpose of this utility model is to provide a motor mount for a power-assisted bicycle, which, in conjunction with the overall vehicle layout, aims to reduce energy consumption and increase vehicle body strength.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A motor mount for an electric bicycle has a longitudinally extending main housing with a bottom bracket hole laterally formed on the main housing for mounting a crank. A fork interface is provided at the front end of the main housing, located in front of the bottom bracket hole. A seat interface is provided at the upper part of the main housing, located above the bottom bracket hole.

[0006] In a preferred embodiment of the present invention, the fork interface includes a first fork interface and a second fork interface that are adjacent to each other and extend forward from the front end of the main housing. The axial extension lines of the first fork interface and the second fork interface intersect the axis of the bottom bracket hole at a first intersection point and a second intersection point.

[0007] In a preferred embodiment of this utility model, the axial extension line of the seat interface intersects the axial line of the central shaft hole at a third intersection point, wherein the first intersection point, the second intersection point, and the third intersection point do not coincide.

[0008] In a preferred embodiment of the present invention, the first intersection point and the second intersection point are located on both sides of the third intersection point.

[0009] In a preferred embodiment of the present invention, a bottom compartment for loading auxiliary equipment is also provided at the bottom of the main housing.

[0010] In a preferred embodiment of this utility model, the bottom compartment opening and the central shaft hole are connected.

[0011] In a preferred embodiment of the present invention, a rear fork interface is further provided at the rear end of the main housing, and the bottom compartment opening is located between the bottom bracket hole and the rear fork interface.

[0012] In a preferred embodiment of this utility model, the motor mount is made of an integral aluminum alloy.

[0013] In a preferred embodiment of this utility model, the aluminum alloy material is A356 aluminum alloy.

[0014] The beneficial effects of this utility model are as follows:

[0015] The present invention provides a motor mount for an electric bicycle, which arranges the seat interface and the fork interface in a compact and more stable manner at the front of the housing, and has a compartment opening at the bottom for accommodating the power assist device. This allows the motor mount to be formed by one-piece liquid forging of aluminum alloy, which ensures the strength of the parts while reducing weight. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0018] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. The above description is for the purpose of simplifying the description of this utility model and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0019] Unless otherwise specified, the singular forms “a,” “the,” and “the” used in this specification include the plural forms. The terms “comprising,” “including,” and “containing” used in this specification indicate the presence of the claimed feature, but do not exclude the presence of one or more other features.

[0020] In the specification, when an element is described as being "on," "fixed" to, "connected" to, or "joined" to another element, the element may be directly located on, fixed to, connected to, joined to, or in contact with the other element, or there may be an intermediate element present. In the specification, the description of a feature being arranged "adjacent" to another feature may refer to a feature having a portion that overlaps with the adjacent feature or a portion located above or below the adjacent feature.

[0021] It is understood that although the terms "first," "second," etc., may be used herein to describe different elements, these elements should not be limited by these terms. These terms are merely used to distinguish one element from another. Therefore, a first element may be referred to as a second element without departing from the teachings of this application.

[0022] Exemplary embodiments of this application will now be described with reference to the accompanying drawings. However, it should be understood that this application can be presented in many different ways and is not limited to the embodiments described below. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide further additional embodiments. Throughout the drawings, the same reference numerals denote the same or functionally identical elements.

[0023] Figure 1 A motor mount for an electric bicycle is shown, comprising a main housing 100 extending in the direction of travel (longitudinal). The main housing 100 has a bottom bracket hole 140 for mounting crank pedals. The front end of the main housing 100 has a first fork interface 120 and a second fork interface 130 extending laterally. Both the first fork interface 120 and the second fork interface 130 are located at the front end of the bottom bracket hole 140, with the first extension axis 121 of the first fork interface 120 and the second extension axis 131 of the second fork interface 130 intersecting the central axis 141 of the bottom bracket hole 140. The first extension axes 121 and the second extension axes 131 are not parallel to reduce the lateral width of the main housing 100. A seat interface 110 for mounting a passenger seat is provided at the upper part of the main housing 100, and the third extension axis 111 of the seat interface 110 also intersects the central axis 141. Furthermore, the first extension axis 121, the second extension axis 131 and the third extension axis 111 all intersect the central axis 141 at the first intersection point 122, the second intersection point 132 and the third intersection point 112. The first intersection point 112 and the second intersection point 132 are located on both sides of the third intersection point 112, so that the center of gravity of the frame is as close as possible to the third intersection point 112.

[0024] A bottom compartment opening 150 for mounting electric assist devices (such as motors) is provided at the bottom of the main housing 100. Considering the large weight of the assist device, it is placed on the side close to the bottom bracket hole 140 and its height is as close as possible to the bottom bracket hole 140 to effectively reduce the overall center of gravity. The rear fork interface 160 is located at the rear end of the main housing 100.

[0025] The main housing 100 is integrally formed using a die-casting process, and the material is A356 aluminum, which reduces weight. The bottom compartment opening 150 and the central shaft hole 140 are connected, which facilitates the connection between the electric power-assisted equipment and the central shaft through the transmission component, and also helps to set up the main material inlet for the die-casting process.

Claims

1. A motorized saddle for a power assisted bicycle, characterized in that, The motor seat has a longitudinally extending main housing, a crank shaft hole is transversely formed on the main housing for arranging a crank, a front fork interface is arranged at the front end of the main housing and located in front of the crank shaft hole, and a seat interface is arranged at the upper part of the main housing and located above the crank shaft hole.

2. A motor mount for a power assisted cycle as claimed in claim 1, wherein, The front fork interface comprises a first front fork interface and a second front fork interface which are adjacent to each other and protrude forward at the front end of the main housing, and the axis extension lines of the first front fork interface and the second front fork interface intersect with the axis of the crank shaft hole at a first intersection point and a second intersection point.

3. A motor mount for a power assisted cycle as claimed in claim 2, wherein, The axis extension line of the seat interface intersects with the axis of the crank shaft hole at a third intersection point, and the first intersection point, the second intersection point and the third intersection point are not coincident.

4. A motor mount for a power assisted cycle as claimed in claim 3, wherein, The first intersection point and the second intersection point are located on both sides of the third intersection point.

5. A motor mount for a power assisted cycle as claimed in any one of claims 1 to 4, wherein, A bottom compartment hole is further formed at the bottom of the main housing for loading a power assisting device.

6. A motor mount for a power assisted cycle as claimed in claim 5 wherein, The bottom compartment hole is in communication with the crank shaft hole.

7. A motor mount for a power assisted cycle as claimed in claim 5 wherein, A rear fork interface is further arranged at the rear end of the main housing, and the bottom compartment hole is located between the crank shaft hole and the rear fork interface.

8. A motor mount for a power assisted cycle as claimed in claim 5 wherein, The motor seat is an integral structure made of aluminum alloy.

9. A motor mount for a power assisted cycle as claimed in claim 8, wherein, The aluminum alloy is A356 aluminum alloy.

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