Quick release assembly and two-wheeled electric vehicle

Abstract

This utility model relates to the field of quick-release devices, specifically quick-release components and two-wheeled electric vehicles. The quick-release component includes a hub motor and quick-release bolts. The hub motor includes a motor shaft with mounting channels machined at both ends. The center lines of the two mounting channels are coaxial with the axis of the motor shaft, and the inner walls of the two mounting channels are machined with internal threads. There are two quick-release bolts, each with an externally threaded shank. The internal thread at either end of the motor shaft is used to connect to the external thread of one of the quick-release components. The threaded shank of the quick-release bolt forms a threaded connection with the internal thread of the corresponding mounting channel. After the two quick-release bolts are loosened relative to the motor shaft, workers or users can remove the two quick-release bolts relative to the motor shaft without using tools.

Description

Technical Field

[0001] This utility model relates to the field of quick-release devices, specifically quick-release components and two-wheeled electric vehicles. Background Technology

[0002] In the prior art, a patent document entitled "A Quick-Release Device for Two-Wheeled Vehicles" with application number 202023342156.8 is provided. In this prior art, a quick-release structure consisting of a first quick-release lever, a second quick-release lever, and an axle is specifically adopted. When this quick-release device is actually used on a two-wheeled vehicle, although the worker or user can loosen the axle relative to the rear fork of the two-wheeled vehicle by pulling and twisting the first and second quick-release levers, it cannot completely separate the first and second quick-release levers from the axle. If this prior art wants to achieve the separation of the first and second quick-release levers from the axle, a tool (such as a wrench) is required to disassemble the hinge of the first or second quick-release lever before separation can be achieved.

[0003] As can be seen from the above-mentioned prior art, the quick-release device for two-wheeled vehicles in the prior art can only achieve the technical effect of loosening the axle relative to the rear fork by moving the first quick-release lever and the second quick-release lever before using tools, but cannot separate the components of the quick-release device (the first and second quick-release levers) relative to the axle; only after using tools can the components of the quick-release device be separated from the axle.

[0004] Therefore, how to separate the components of the quick-release device from the shaft without using tools has become a technical problem to be solved. Utility Model Content

[0005] To address the technical problem of how to separate the components of a quick-release device from the axle without using tools, this invention provides a quick-release assembly and a two-wheeled electric vehicle.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] According to one aspect of the present invention, a quick-release assembly is provided, including a hub motor and quick-release bolts;

[0008] The hub motor includes a motor shaft, wherein mounting channels are machined at both ends of the motor shaft, the center lines of the two mounting channels are coaxial with the axis of the motor shaft, and the inner walls of the two mounting channels are machined with internal threads.

[0009] The number of quick-release bolts is two, and each quick-release bolt is provided with a threaded rod with external threads. The internal thread at either end of the motor shaft is used to connect to the external thread of one of the quick-release bolts.

[0010] Furthermore, the hub motor also includes a cable;

[0011] The two ends of the motor shaft are the head end and the tail end, respectively. At the head end, the motor shaft is also machined with a wire passage. The center line of the wire passage intersects with the axis of the motor shaft. Inside the motor shaft, the wire passage and the mounting channel located at the head end form a T-junction. The position where the T-junction is formed is defined as the intersection position.

[0012] The internal thread in the motor shaft located at the head end is restricted between the head end and the cross position;

[0013] The cable is configured to be inserted into the motor shaft through the cable passage, and a portion of the cable is accommodated at the crossing position.

[0014] Furthermore, the quick-release bolt also includes a quick-release handle and a pressure plate;

[0015] The two ends of the threaded rod are a head end and an end end, respectively. The head end is hinged to the eccentric part of the quick-release handle. The pressure plate is sleeved on the threaded rod and is located between the eccentric part and the end end.

[0016] When one of the quick-release handles is connected to each end of the motor shaft, the pressure plate is located between the eccentric portion and the motor shaft.

[0017] According to one aspect of the present invention, a two-wheeled electric vehicle is provided, including a rear fork assembly, the rear fork assembly including a first rear fork and a second rear fork arranged side by side, characterized in that it further includes a hub motor and quick-release bolts;

[0018] The hub motor includes a motor shaft, wherein mounting channels are machined at both ends of the motor shaft, the center lines of the two mounting channels are coaxial with the axis of the motor shaft, and the inner walls of the two mounting channels are machined with internal threads.

[0019] The number of quick-release bolts is two, and each quick-release bolt is provided with a threaded rod with external threads. The internal thread at either end of the motor shaft is used to connect to the external thread of one of the quick-release bolts.

[0020] When the hub motor is mounted on the rear fork assembly and the two quick-release bolts are respectively connected to both ends of the motor shaft, the two quick-release bolts apply pressure to the first rear fork and the second rear fork, such that the first rear fork is clamped by one of the quick-release bolts and the motor shaft, and the second rear fork is clamped by the other quick-release bolt and the motor shaft.

[0021] Furthermore, the two ends of the motor shaft are the head end and the tail end, respectively;

[0022] The motor shaft located at the head end is provided with a head end step portion, and a gap is formed between the head end step portion and the head end;

[0023] The motor shaft located at the tail end is provided with a tail end step portion, and a gap is formed between the tail end step portion and the tail end;

[0024] When the hub motor is mounted on the rear fork assembly and the two quick-release bolts are respectively connected to the two ends of the motor shaft, one surface of the first rear fork is face-to-face with the end face of the head end step portion, and one surface of the second rear fork is face-to-face with the end face of the tail end step portion.

[0025] Furthermore, the hub motor also includes a cable;

[0026] At the head end, the motor shaft is also machined with a wire passage. The center line of the wire passage intersects with the axis of the motor shaft. Inside the motor shaft, the wire passage and the mounting channel located at the head end form a T-junction. The position where the T-junction is formed is defined as the intersection position. The outline of the wire passage intersects with the outline of the head end step.

[0027] The internal thread in the motor shaft located at the head end is restricted between the head end and the cross position;

[0028] The cable is configured to be inserted into the motor shaft through the cable passage, and a portion of the cable is accommodated at the crossing position;

[0029] When the hub motor is mounted on the rear fork assembly, the cable located outside the cable passage is located outside the outline of the first rear fork.

[0030] Furthermore, the quick-release bolt also includes a quick-release handle and a pressure plate;

[0031] The two ends of the threaded rod are a head end and an end end, respectively. The head end is hinged to the eccentric part of the quick-release handle. The pressure plate is sleeved on the threaded rod and is located between the eccentric part and the end end.

[0032] When one of the quick-release handles is connected to each end of the motor shaft, the pressure plate is located between the eccentric portion and the motor shaft.

[0033] Furthermore, it also includes a first anti-rotation piece, which has a first flat pad portion for fitting onto the motor shaft and a first latching portion protruding from the first flat pad portion;

[0034] The first rear fork is provided with a first slot, wherein the motor shaft is mounted in the first slot along the radial direction of the motor shaft;

[0035] At the head end, the first anti-rotation plate is sleeved on the motor shaft via the first flat pad, and the first anti-rotation plate is restricted between the quick-release handle and the first rear fork located at the head end, wherein, along the axial direction of the motor shaft, the first locking protrusion engages with the first locking groove.

[0036] Furthermore, it also includes a second anti-rotation plate and a first U-shaped gasket;

[0037] At the head end position, the first U-shaped washer is sleeved on the motor shaft, and the first U-shaped washer is confined between the first rear fork and the head end step;

[0038] At the tail end, the second anti-rotation plate is sleeved on the motor shaft, and the second anti-rotation plate is restricted between the tail end step and the second rear fork.

[0039] Furthermore, the two-wheeled electric vehicle specifically refers to an electric bicycle, an electric-assisted bicycle, or an electric scooter.

[0040] The above technical solution has the following advantages or beneficial effects:

[0041] The quick-release assembly provided by this utility model has mounting channels machined at both ends of the motor shaft of the hub motor, and internal threads are machined in the mounting channels; the threaded rod of the quick-release bolt forms a threaded connection with the internal thread of the corresponding mounting channel; after the two quick-release bolts are loosened relative to the motor shaft, the workers or users can remove the two quick-release bolts relative to the motor shaft without using tools. Attached Figure Description

[0042] Figure 1 A schematic diagram of the quick-release assembly, the first rear fork, and the second rear fork provided in an embodiment of this utility model;

[0043] Figure 2 A schematic diagram of the split structure of the quick-release assembly provided in an embodiment of this utility model;

[0044] Figure 3A schematic diagram of the split structure of the quick-release assembly, the first rear fork, and the second rear fork provided in an embodiment of this utility model;

[0045] Figure 4 A schematic diagram of the split structure of the first anti-rotation plate, the second anti-rotation plate, the first rear fork, and the second rear fork provided for an embodiment of this utility model;

[0046] Figure 5 This is a schematic diagram of the structure of the first U-shaped gasket provided in an embodiment of the present utility model;

[0047] Figure 6 This is a schematic diagram of the quick-release handle provided in an embodiment of the present utility model. Detailed Implementation

[0048] Example 1:

[0049] In this embodiment, a quick-release assembly is provided to solve the technical problem in the prior art of how to separate the components of a quick-release device from the shaft without using tools.

[0050] For details, see Figure 1 or Figure 2 The quick-release assembly in this embodiment includes a hub motor 1 and a quick-release bolt 2;

[0051] The hub motor 1 includes a motor shaft 101, wherein mounting channels 102 are machined at both ends of the motor shaft 101, the center lines of the two mounting channels 102 are coaxial with the axis of the motor shaft 101, and the inner walls of the two mounting channels 102 are machined with internal threads.

[0052] There are two quick-release bolts 2. Each quick-release bolt 2 is provided with a threaded rod 201 with external threads. The internal thread of either end of the motor shaft 101 is used to connect to the external thread of one of the quick-release bolts 2.

[0053] In this embodiment, for the convenience of those skilled in the art, please refer to... Figure 2 The two ends of the motor shaft 101 of the hub motor 1 are defined as the head end A and the tail end B, respectively.

[0054] In this embodiment, see Figure 2 The motor shaft 101 has mounting channels 102 machined at both ends. At the head end A of the motor shaft 101, one of the mounting channels 102 is configured to be recessed from the end face of the head end A of the motor shaft 101 along the axial direction of the motor shaft 101 to the center of the motor shaft 101. At the tail end B of the motor shaft 101, one of the mounting channels 102 is configured to be recessed from the end face of the tail end B of the motor shaft 101 along the axial direction of the motor shaft 101 to the center of the motor shaft 101.

[0055] In this embodiment, the center lines of the two mounting channels 102 are coaxial with the center line of the motor shaft 101, respectively.

[0056] The inner walls of the two mounting channels 102 are respectively machined with internal threads; wherein, along the axis of the motor shaft 101, the internal thread of each mounting channel 102 extends into the motor shaft 101 along the opening formed by the end face of the mounting channel 102 and the motor shaft 101.

[0057] See Figure 2 In this embodiment, the quick-release bolt 2 is essentially a combination structure of multiple components; at least in this embodiment, the quick-release bolt 2 includes a threaded rod 201, which has external threads; for the specific structure of the other quick-release bolts 2, please refer to the following text.

[0058] See Figure 1 or Figure 2 In this embodiment, the quick-release assembly is provided with two quick-release bolts 2; one quick-release bolt 2 is used to connect to the internal thread of the mounting channel 102 located at the head end A, and the other quick-release bolt 2 is used to connect to the internal thread of the mounting channel 102 located at the tail end B.

[0059] The internal threads of the mounting channel 102 at position A at the head end and at position B at the tail end are respectively used to connect the threaded rod 201 of one of the quick-release bolts 2.

[0060] When assembling the quick-release assembly and the rear fork of the two-wheeled electric vehicle, the worker or user first places the hub motor 1 on the rear fork, so that the hub motor 1 forms a temporary position relative to the rear fork; then, the worker connects the two quick-release bolts 2 to the motor shaft 101 respectively, and screws the two quick-release bolts 2 into place in the positive direction (for example, clockwise direction is positive), so that the rear fork is locked by the two quick-release bolts 2 and the motor shaft 101.

[0061] It should be understood that a portion of the quick-release bolt 2 is used to apply pressure to the rear fork, and correspondingly, a portion of the motor shaft 101 is used to apply pressure to the rear fork; this is common knowledge known to those skilled in the art.

[0062] It should be noted that the threaded connection structure formed by the threaded rod 201 of the quick-release bolt 2 and the internal thread of the motor shaft 101 plays a role in transmitting force in clamping the rear fork. Specifically, as the length of the threaded connection between the threaded rod 201 and the internal thread of the motor shaft 101 increases, the distance between the quick-release bolt 2 and the motor shaft 101 gradually decreases, causing the quick-release bolt 2 and the motor shaft 101 to clamp the rear fork. At this time, the reaction force applied by the rear fork to the quick-release bolt 2 is the pressure applied by the motor shaft 101 to the rear fork, and vice versa. The reaction force is realized through the connection structure between the threaded rod 201 and the internal thread of the motor shaft 101.

[0063] When it is necessary to disassemble the quick-release assembly and the rear fork, the worker or user should turn the two quick-release bolts 2 in opposite directions (for example, counterclockwise is the opposite direction) so that the rear fork loses the locking force of the two quick-release bolts 2 and the motor shaft 101 and becomes loose. Then, the worker or user can remove the hub motor 1 and the two quick-release bolts 2 from the rear fork.

[0064] When it is necessary to separate the two quick-release bolts 2 from the motor shaft 101, the staff or user can continue to turn the two quick-release bolts 2 in opposite directions to separate the threaded rods 201 of the two quick-release bolts 2 from the internal threads of the mounting channel 102 of the motor shaft 101.

[0065] In the prior art (titled "A Quick-Release Device for Two-Wheeled Vehicles," application number 202023342156.8), the worker or user pulls the first and second quick-release levers to change the axle from a locked state to a loose state relative to the rear fork of the two-wheeled vehicle. At this time, the axle of the prior art has formed a movable state relative to the rear fork. However, after forming the movable state, since the first and second quick-release levers are respectively hinged to the axle, if the worker or user still needs to separate the first and second quick-release levers relative to the axle, then the worker or user must use tools (including but not limited to wrenches) to disassemble the hinge relative to the axle and the first quick-release lever, or relative to the axle and the second quick-release lever, before the first and second quick-release levers can be separated from the axle respectively.

[0066] In this embodiment, the quick-release assembly has mounting channels 102 machined at both ends of the motor shaft 101 of the hub motor 1, and internal threads are machined in the mounting channels 102. The threaded rod 201 of the quick-release bolt 2 forms a threaded connection with the internal thread of the corresponding mounting channel 102. The two quick-release bolts 2 are respectively threaded relative to the motor shaft 101, so that the connection structure between the two quick-release bolts 2 and the motor shaft 101 in this embodiment is different from the connection structure between the first quick-release plate and the second quick-release plate relative to the shaft in the prior art. After the two quick-release bolts 2 in this embodiment are loosened relative to the motor shaft 101, the staff or user can remove the two quick-release bolts 2 relative to the motor shaft 101 without using tools.

[0067] Therefore, the quick-release assembly provided in this embodiment solves the technical problem in the prior art of how to separate the components of the quick-release device relative to the shaft without using tools.

[0068] Further, see Figure 2 In this embodiment, the quick-release assembly, hub motor 1, also includes a cable 103;

[0069] The two ends of the motor shaft 101 are the head end A and the tail end B, respectively. At the head end A, the motor shaft 101 is also machined with a wire passage 104. The center line of the wire passage 104 intersects with the axis of the motor shaft 101. Inside the motor shaft 101, the wire passage 104 and the mounting channel 102 located at the head end A form a three-way connection. The position where the three-way connection is formed is defined as the intersection position X.

[0070] The internal thread in the motor shaft 101 located at the head end A is restricted between the head end A and the cross position X;

[0071] Cable 103 is configured to be inserted into motor shaft 101 through cable passage 104, and a portion of cable 103 is accommodated at cross position X.

[0072] In this embodiment, see Figure 2 The cable passage 104 at the head end A of the motor shaft 101 is used to pass the cable 103 into the motor shaft 101 and extend it toward the stator of the motor.

[0073] Specifically, on the one hand, the mounting channel 102 at the head end A of the motor shaft 101 extends from the end face of the head end A of the motor shaft 101 to the midpoint of the motor shaft 101, and a wire outlet channel is provided at the midpoint of the motor shaft 101. On the other hand, the wire passage channel 104 at the head end A of the motor shaft 101 forms a three-way shape with the mounting channel 102 at the head end A of the motor shaft 101.

[0074] In the aforementioned three-way channel structure, see... Figure 2 The mounting channel 102, from the end face of the head end A to the cross position X, is used to machine internal threads and to connect the threaded rod 201 of one of the quick-release bolts 2; the cable passage 104 to the cross position X, the mounting channel 102 between the cross position X and the cable exit channel, and the cable exit channel together form a path for setting and accommodating the cable 103, which allows the cable 103 to extend from the outside of the motor to the stator position inside the motor.

[0075] It should be understood that when the threaded rod 201 of one of the quick-release bolts 2 is connected to the internal thread of the mounting channel 102 located at the head end A, the position of the internal thread is restricted between the head end A and the cross position X, so the threaded rod 201 cannot squeeze or contact the cable 103 housed in the cross position X; from the perspective of the hub motor 1, since the cable 103 located in the cross position X is not squeezed by the threaded rod 201, it is beneficial to improve the service life of the hub motor 1.

[0076] It should be understood that the position of the wire passage G of the wire passage 104 in this embodiment is close to the head end A of the motor shaft 101, while the intersection X of the wire passage 104 and the mounting channel 102 located at the head end A is located away from the head end A of the motor shaft 101 and outside the outline of the "motor housing" of the hub motor 1, so as to avoid the wire passage 104 damaging the "motor housing"; in addition, from the direction from the head end A to the tail end B of the motor shaft 101, the angle between the center line of the wire passage 104 and the center line of the mounting channel 102 located at the head end A is an acute angle.

[0077] Further, see Figure 2 In this embodiment, the quick-release assembly, the quick-release bolt 2 also includes a quick-release handle 202 and a pressure plate 203;

[0078] The two ends of the threaded rod 201 are the beginning end and the end end, respectively. The beginning end is hinged to the eccentric part 204 of the quick release handle 202. The pressure plate 203 is sleeved on the threaded rod 201 and is located between the eccentric part 204 and the end end.

[0079] When one of the quick-release handles 202 is connected to each end of the motor shaft 101, the pressure plate 203 is located between the eccentric part 204 and the motor shaft 101.

[0080] The structures of the quick-release handle 202 and the pressure plate 203 are common knowledge known to those skilled in the art; the structure of the first quick-release pressure ring in the prior art (a quick-release device for two-wheeled vehicles, application number 202023342156.8) is the same as or similar to the structure of the pressure plate 203 in this embodiment; the structures of the first quick-release lever and the second quick-release lever in the prior art are the same as or similar to the structure of the quick-release handle 202 in this embodiment.

[0081] In this embodiment, the combination structure of the quick-release handle 202, the threaded rod 201, and the pressure plate 203 is different from the structure of the first quick-release lever or the second quick-release lever in the prior art that is respectively connected to the bearing. In this embodiment, the quick-release handle 202 and the threaded rod 201 form a hinge structure, while the first quick-release lever or the second quick-release lever in the prior art forms a hinge structure with the shaft. Furthermore, in this embodiment, the threaded rod 201 forms a threaded connection structure with the motor shaft 101, while the prior art does not include the threaded rod 201, and therefore does not have the threaded connection structure described in this embodiment.

[0082] In this embodiment, see Figure 2 or Figure 6 The eccentric part 204 of the quick-release handle 202 is hinged to the beginning end of the threaded rod 201, which gives the eccentric part 204 two positions relative to the threaded rod 201.

[0083] In the locking position C, as the quick-release handle 202 rotates towards the threaded rod 201 (e.g., clockwise), most of the structure of the eccentric portion 204 is located between the hinge hole of the eccentric portion 204 and the pressure plate 203 sleeved on the threaded rod 201;

[0084] Release position D, as the quick-release handle 202 rotates away from the threaded rod 201 (e.g., counterclockwise), most of the structure of the eccentric portion 204 is located outside the hinge hole and pressure plate 203 of the eccentric portion 204.

[0085] When the quick-release assembly of this embodiment is actually installed on the rear fork of a two-wheeled electric vehicle, the pressure plate 203 of each quick-release bolt 2 is restricted to the position between the quick-release handle 202 and the rear fork. The threaded rod 201 of each quick-release bolt 2 is respectively connected to the internal thread of the mounting channel 102 at one end of the motor shaft 101. At this time, if the quick-release handle 202 of each quick-release bolt 2 is pushed from the release position D to the locking position C, then, as the quick-release handle 202 rotates, the eccentric part 204 of the quick-release handle 202 gradually contacts the pressure plate 203 and applies pressure to the pressure plate 203. This pressure is transmitted to the rear fork through the pressure plate 203, thereby locking the rear fork, the motor shaft 101 and the quick-release bolt 2.

[0086] When the quick-release assembly of this embodiment is actually installed on the rear fork of the two-wheeled electric vehicle, and the rear fork, motor shaft 101 and quick-release bolt 2 are locked together, the worker or user can pull the quick-release handle 202, so that the quick-release handle 202 is pulled from the locked position C to the released position D. As the quick-release handle 202 rotates, the eccentric part 204 of the quick-release handle 202 gradually moves away from the pressure plate 203, so that the pressure plate 203 loses the pressure of the eccentric part 204; after losing the pressure of the eccentric part 204, the rear fork, motor shaft 101 and quick-release bolt 2 are in a loose state.

[0087] It should be understood that the quick-release assembly in this embodiment is not simply a transformation of the hinge structure of the first and second quick-release blocks and the axle in the prior art (a quick-release device for two-wheeled vehicles, application number 202023342156.8) into a simple connection structure;

[0088] In the aforementioned prior art, if the user can confirm that the motor installed on the rear fork of the two-wheeled vehicle is faulty, then, without the user having tools (such as a wrench), the following two situations will occur:

[0089] In the first scenario, the user either purchases tools and accessories (motor) at the same time, and uses the tools to remove the first and second quick-release levers from the axle on the two-wheeled vehicle, and then replaces the accessories (motor). After that, the user uses the tools to reconnect the first and second quick-release levers to the bearing to achieve the purpose of replacing the motor.

[0090] In the second scenario, the user pushes the two-wheeled vehicle to a repair shop and, through the repair shop's services, achieves the goal of replacing the motor.

[0091] When the quick-release assembly in this embodiment is actually applied to a two-wheeled electric vehicle, if the user confirms that the hub motor 1 is faulty, then, without the user having tools (such as a wrench), the user can directly remove the two quick-release bolts 2 and the motor shaft 101 of the hub motor 1, so that the two quick-release bolts 2 are separated from the hub motor 1, and then a new hub motor 1 can be replaced. In this way, the user does not need to purchase tools to achieve the purpose of replacing the motor, which saves the user economic costs; the user also does not need to go through the service of a repair shop to achieve the purpose of replacing the motor, which reduces the time and economic costs of replacing the motor for the user.

[0092] Example 2:

[0093] In this embodiment, a two-wheeled electric vehicle is provided to solve the technical problem in the prior art of how to separate the components of a quick-release device from the axle without using tools.

[0094] For details, see Figures 1 to 3 The two-wheeled electric vehicle of this embodiment includes a rear fork assembly, which includes a first rear fork 301 and a second rear fork 302 arranged side by side, and also includes a hub motor 1 and a quick-release bolt 2.

[0095] The hub motor 1 includes a motor shaft 101, wherein mounting channels 102 are machined at both ends of the motor shaft 101, the center lines of the two mounting channels 102 are coaxial with the axis of the motor shaft 101, and the inner walls of the two mounting channels 102 are machined with internal threads.

[0096] There are two quick-release bolts 2. Each quick-release bolt 2 is provided with a threaded rod 201 with external threads. The internal thread of either end of the motor shaft 101 is used to connect to the external thread of one of the quick-release bolts 2.

[0097] When the hub motor 1 is mounted on the rear fork assembly and the two quick-release bolts 2 are respectively connected to the two ends of the motor shaft 101, the two quick-release bolts 2 apply pressure to the first rear fork 301 and the second rear fork 302, so that the first rear fork 301 is clamped by one of the quick-release bolts 2 and the motor shaft 101, and the second rear fork 302 is clamped by the other quick-release bolt 2 and the motor shaft 101.

[0098] For ease of description, in this embodiment, participants Figure 2 or Figure 3 The two ends of the motor shaft 101 are defined as head end A and tail end B, respectively. In this embodiment, the head end A of the motor shaft 101 is the same as the head end A of the motor shaft 101 in the aforementioned embodiment 1, and the tail end B of the motor shaft 101 in this embodiment is the same as the tail end B of the motor shaft 101 in the aforementioned embodiment 1.

[0099] In this embodiment, the structure, technical principle and technical effect of the hub motor 1 and the quick-release bolt 2 are the same as those of the hub motor 1 and the quick-release bolt 2 in the aforementioned embodiment 1, and will not be repeated here.

[0100] In this embodiment, when the hub motor 1 and the quick-release bolt 2 are respectively connected to the rear fork assembly of the two-wheeled electric vehicle, the motor (more specifically the stator and rotor) of the hub motor 1 is located between the first rear fork 301 and the second rear fork 302; the head end A of the motor shaft 101 is disposed on the first rear fork 301, and the tail end B of the motor shaft 101 is disposed on the second rear fork 302, wherein, along the radial direction of the motor shaft 101, the motor shaft 101 located at the head end A intersects with the first rear fork 301, and the motor shaft 101 located at the tail end B intersects with the second rear fork 302;

[0101] One of the quick-release bolts 2 is connected to the motor shaft 101 located at the head end A. The threaded rod 201 of the quick-release bolt 2 intersects the outline of the first rear fork 301 and the outline of the mounting channel 102 located at the head end A, respectively. The external thread of the threaded rod 201 and the internal thread of the mounting channel 102 form a threaded connection.

[0102] Similarly, another quick-release bolt 2 is connected to the motor shaft 101 located at the tail end B. The threaded rod 201 of the quick-release bolt 2 intersects the outline of the second rear fork 302 and the outline of the mounting channel 102 located at the tail end B, respectively. The external thread of the threaded rod 201 and the internal thread of the mounting channel 102 form a threaded connection.

[0103] When the worker or user screws one of the quick-release bolts 2 relative to the motor shaft 101 located at the head end A, and screws the quick-release bolt 2 into place in the positive direction (for example, clockwise direction is positive), the length of the quick-release bolt 2 and the motor shaft 101 gradually decreases, causing the quick-release bolt 2 and the motor shaft 101 to lock the first rear fork 301 together.

[0104] Furthermore, when the worker or user screws another quick-release bolt 2 relative to the motor shaft 101 at the tail end B and screws the quick-release bolt 2 into place in the positive direction (e.g., clockwise direction is positive), the length of the quick-release bolt 2 and the motor shaft 101 gradually decreases, causing the quick-release bolt 2 and the motor shaft 101 to lock the second rear fork 302 together.

[0105] When it is necessary to disassemble the quick-release assembly and the rear fork, the worker or user should turn the two quick-release bolts 2 in opposite directions (for example, counterclockwise is the opposite direction) so that the rear fork loses the locking force of the two quick-release bolts 2 and the motor shaft 101 and becomes loose. Then, the worker or user can remove the hub motor 1 and the two quick-release bolts 2 from the rear fork.

[0106] When it is necessary to separate the two quick-release bolts 2 from the motor shaft 101, the staff or user can continue to turn the two quick-release bolts 2 in opposite directions to separate the threaded rods 201 of the two quick-release bolts 2 from the internal threads of the mounting channel 102 of the motor shaft 101.

[0107] In this embodiment of the two-wheeled electric vehicle, the hub motor 1 has mounting channels 102 machined at both ends of the motor shaft 101, and internal threads are machined in the mounting channels 102. The threaded rod 201 of the quick-release bolt 2 forms a threaded connection with the internal thread of the corresponding mounting channel 102. The two quick-release bolts 2 are threadedly connected to the motor shaft 101, so that the connection structure between the two quick-release bolts 2 and the motor shaft 101 in this embodiment is different from the connection structure between the first quick-release plate and the second quick-release plate relative to the shaft in the prior art (named a quick-release device for two-wheeled vehicles, application number 202023342156.8). After the two quick-release bolts 2 in this embodiment are loosened relative to the motor shaft 101, the workers or users can remove the two quick-release bolts 2 relative to the motor shaft 101 without using tools.

[0108] Therefore, the two-wheeled electric vehicle provided in this embodiment solves the technical problem in the prior art of how to separate the components of the quick-release device from the axle without using tools.

[0109] Further, see Figure 3 In this embodiment of the two-wheeled electric vehicle, the motor shaft 101 at the head end A is provided with a head end step portion 105, and a gap is formed between the head end step portion 105 and the head end A.

[0110] The motor shaft 101 located at the tail end B is provided with a tail end step portion 106, and a gap is formed between the tail end step portion 106 and the tail end B;

[0111] When the hub motor 1 is mounted on the rear fork assembly and the two quick-release bolts 2 are respectively connected to the two ends of the motor shaft 101, one surface of the first rear fork 301 is face-to-face with the end face of the head end step portion 105, and one surface of the second rear fork 302 is face-to-face with the end face of the tail end step portion 106.

[0112] The head end step 105 serves to contact one of the surfaces of the first rear fork 301, which faces the stator or rotor of the hub motor 1. The diameter of the head end step 105 is larger than the diameter of the motor shaft 101 intersecting with the first rear fork 301. In other words, the head end step 105 has an end face facing the first rear fork 301, which is used to contact the first rear fork 301. When the worker or user screws the quick-release bolt 2, the length of the quick-release bolt 2 and the motor shaft 101 is reduced, and the quick-release bolt 2 and the head end step 105 together clamp the first rear fork 301.

[0113] Furthermore, the tail end step 106 serves to contact one of the surfaces of the second rear fork 302, which faces the stator or rotor of the hub motor 1. The diameter of the tail end step 106 is larger than the diameter of the motor shaft 101 intersecting with the second rear fork 302. In other words, the tail end step 106 has a stepped end face facing the second rear fork 302, which is used to contact the second rear fork 302. When the worker or user screws the quick-release bolt 2, the length of the quick-release bolt 2 and the motor shaft 101 is reduced, and the quick-release bolt 2 and the tail end step 106 together clamp the second rear fork 302.

[0114] Further, see Figure 2 or Figure 3 In this embodiment of the two-wheeled electric vehicle, the hub motor 1 also includes a cable 103;

[0115] At the head end A, the motor shaft 101 is also machined with a wire passage 104. The center line of the wire passage 104 intersects with the axis of the motor shaft 101. Inside the motor shaft 101, the wire passage 104 and the mounting channel 102 located at the head end A form a T-junction. The position where the T-junction is formed is defined as the intersection position X. The outline of the wire passage 104 intersects with the outline of the head end step portion 105.

[0116] The internal thread in the motor shaft 101 located at the head end A is restricted between the head end A and the cross position X;

[0117] Cable 103 is configured to be inserted into motor shaft 101 through cable passage 104, and a portion of cable 103 is accommodated at cross position X;

[0118] When the hub motor 1 is mounted on the rear fork assembly, the cable 103 located outside the cable passage 104 is outside the outline of the first rear fork 301.

[0119] The positional and connection relationships of the cable 103 relative to the cable passage 104 in this embodiment are the same as those of the cable 103 relative to the cable passage 104 in the aforementioned embodiment 1; the positional and connection relationships of the cable passage 104 and the installation channel 102 located at the head end A in this embodiment are the same as those of the cable passage 104 and the installation channel 102 located at the head end A in the aforementioned embodiment 1, and will not be repeated here.

[0120] In this embodiment, when the hub motor 1 is mounted on the rear fork, the cable passage 104 and the surface of the motor shaft 101 form a cable passage opening G, which is exposed outside the outline of the first rear fork 301. In other words, the first rear fork 301 has a position for accommodating or setting the cable 103 in the direction facing the stator or rotor of the hub motor 1. This causes the cable 103 located at the cable passage opening G to interfere with the outline of the first rear fork 301. This arrangement can prevent the first rear fork 301 from squeezing the cable 103 and causing the hub motor 1 to fail during the disassembly of the hub motor 1 and the first rear fork 301, or during the assembly of the hub motor 1 and the first rear fork 301, thus improving the lifespan of the hub motor 1.

[0121] It should be understood that when the threaded rod 201 of one of the quick-release bolts 2 is connected to the internal thread of the mounting channel 102 located at the head end A, the position of the internal thread is restricted between the head end A and the cross position X, so the threaded rod 201 cannot squeeze or contact the cable 103 housed in the cross position X; from the perspective of the hub motor 1, since the cable 103 located in the cross position X is not squeezed by the threaded rod 201, it is beneficial to improve the service life of the hub motor 1.

[0122] Further, see Figure 2 or Figure 3 In this embodiment of the two-wheeled electric vehicle, the quick-release bolt 2 also includes a quick-release handle 202 and a pressure plate 203;

[0123] The two ends of the threaded rod 201 are the beginning end and the end end, respectively. The beginning end is hinged to the eccentric part 204 of the quick release handle 202. The pressure plate 203 is sleeved on the threaded rod 201 and is located between the eccentric part 204 and the end end.

[0124] When one of the quick-release handles 202 is connected to each end of the motor shaft 101, the pressure plate 203 is located between the eccentric part 204 and the motor shaft 101.

[0125] The structure, technical principle, and technical effect of the quick-release handle 202 and pressure plate 203 in this embodiment are the same as those of the aforementioned quick-release handle 202 and pressure plate 203, and will not be repeated here.

[0126] When the hub motor 1 is mounted on the rear fork assembly and the two quick-release bolts 2 are respectively connected to the two ends of the motor shaft 101, the first rear fork 301 is restricted between the head end step portion 105 and the pressure plate 203 located at the head end A, and the second rear fork 302 is restricted between the tail end step portion 106 and the pressure plate 203 located at the tail end B.

[0127] The first rear fork 301 is clamped by the pressure plate 203 of one of the quick-release bolts 2 and the head end step 105 to form a locked state, and the second rear fork 302 is clamped by the pressure plate 203 of the other quick-release bolt 2 and the tail end step 106 to form a locked state.

[0128] Further, see Figure 3 or Figure 4 The two-wheeled electric vehicle of this embodiment also includes a first anti-rotation plate 4, which has a first flat pad 401 for being sleeved onto the motor shaft 101 and a first locking protrusion 402 protruding from the first flat pad 401.

[0129] The first rear fork 301 is provided with a first slot 3011, wherein the motor shaft 101 is installed in the first slot 3011 along the radial direction of the motor shaft 101.

[0130] At the head end A, the first anti-rotation plate 4 is sleeved on the motor shaft 101 through the first flat pad 401. The first anti-rotation plate 4 is restricted between the quick release handle 202 and the first rear fork 301 located at the head end A. Along the axial direction of the motor shaft 101, the first locking protrusion 402 is engaged in the first locking groove 3011.

[0131] The structure and function of the first anti-rotation plate 4 and the second anti-rotation plate 5 mentioned later are common knowledge known to those skilled in the art.

[0132] In this embodiment, see Figure 3 When one of the quick-release bolts 2, the first rear fork 301, the first anti-rotation plate 4 and the hub motor 1 are connected respectively, and the quick-release bolt 2 and the head end step 105 lock the first rear fork 301, the first anti-rotation plate 4 is restricted between the pressure plate 203 of the quick-release bolt 2 and the first rear fork 301.

[0133] The purpose of this arrangement is to reduce the distance between the first rear fork 301 and the head end step 105;

[0134] From the perspective of the rear fork, the length of the first flat pad 401 of the first anti-rotation plate 4 is reduced, which makes the gap between the first rear fork 301 and the second rear fork 302 smaller.

[0135] From the perspective of hub motor 1, the length of the head end step 105 can be configured to be longer, increasing the rigidity of motor shaft 101.

[0136] After the hub motor 1 and the first anti-rotation plate 4 are actually installed relative to the rear fork, the first protrusion of the first anti-rotation plate 4 is engaged in the first slot 3011 of the first rear fork 301. The first flat pad 401 of the first anti-rotation plate 4 forms a radial position relative to the motor shaft 101, and the first protrusion of the first anti-rotation plate 4 forms a radial position relative to the first slot 3011 of the first rear fork 301, which indirectly makes the motor shaft 101 radially positioned relative to the first rear fork 301.

[0137] Further, see Figure 3 or Figure 4 or Figure 5 The two-wheeled electric vehicle of this embodiment also includes a second anti-rotation plate 5 and a first U-shaped gasket 6;

[0138] At position A at the head end, the first U-shaped washer 6 is sleeved on the motor shaft 101, and the first U-shaped washer 6 is restricted between the first rear fork 301 and the step at the head end A;

[0139] At position B at the tail end, the second anti-rotation plate 5 is sleeved on the motor shaft 101, and the second anti-rotation plate 5 is restricted between the tail end step portion 106 and the second rear fork 302.

[0140] The structure of the second anti-rotation plate 5 is the same as that of the first anti-rotation plate 4; the difference is that the position of the second anti-rotation plate 5 relative to the second rear fork 302 and the tail step portion 106 is different from the position of the first turntable relative to the first rear fork 301 and the head step portion 105.

[0141] For details, see Figure 3 When another quick-release bolt 2, the second rear fork 302, the second anti-rotation plate 5 and the hub motor 1 are connected respectively, and the quick-release bolt 2 and the tail step 106 lock the second rear fork 302, the second anti-rotation plate 5 is restricted between the tail step 106 and the second rear fork 302.

[0142] During the actual installation of the hub motor 1 and the second anti-rotation plate 5 relative to the rear fork, the second protrusion of the second anti-rotation plate 5 is engaged into the second slot 3021 of the second rear fork 302, so that the second flat pad of the second anti-rotation plate 5 forms a radial position relative to the motor shaft 101, and the second protrusion of the second anti-rotation plate 5 forms a radial position relative to the second slot 3021 of the second rear fork 302, which indirectly makes the motor shaft 101 radially positioned relative to the second rear fork 302, thus avoiding the negative phenomenon of the motor shaft 101 rotating relative to the second rear fork 302 during the tightening of the quick-release bolt 2.

[0143] See Figure 3The first U-shaped shim 6 is disposed between the first rear fork 301 and the head end step portion 105; the purpose of the first U-shaped shim 6 is to eliminate the tolerance between the first rear fork 301 and the head end step portion 105 caused by machining.

[0144] In this embodiment, see Figure 3 or Figure 5 The structure of the first U-shaped gasket 6 differs from that of the first flat pad 401 of the first anti-rotation plate 4 in that the thickness of the first U-shaped gasket 6 is less than that of the first flat pad 401. The first U-shaped gasket 6 is set as an open gasket, the purpose of which is that a portion of the cable 103 located outside the cable passage 104 can be accommodated in the opening of the first U-shaped gasket 6, avoiding the cable 103 being squeezed by the edge of the first U-shaped gasket 6, which is beneficial to improving the life of the hub motor 1.

[0145] The two-wheeled electric vehicle in this embodiment is specifically an electric bicycle, an electric-assisted bicycle, or an electric scooter.

[0146] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A quick-release assembly, characterized in that, Includes hub motor and quick-release bolts; The hub motor includes a motor shaft, wherein mounting channels are machined at both ends of the motor shaft, the center lines of the two mounting channels are coaxial with the axis of the motor shaft, and the inner walls of the two mounting channels are machined with internal threads. The number of quick-release bolts is two, and each quick-release bolt is provided with a threaded rod with external threads. The internal thread at either end of the motor shaft is used to connect to the external thread of one of the quick-release bolts.

2. The quick-release assembly according to claim 1, characterized in that, The hub motor also includes a cable; The two ends of the motor shaft are the head end and the tail end, respectively. At the head end, the motor shaft is also machined with a wire passage. The center line of the wire passage intersects with the axis of the motor shaft. Inside the motor shaft, the wire passage and the mounting channel located at the head end form a T-junction. The position where the T-junction is formed is defined as the intersection position. The internal thread in the motor shaft located at the head end is restricted between the head end and the cross position; The cable is configured to be inserted into the motor shaft through the cable passage, and a portion of the cable is accommodated at the crossing position.

3. The quick-release assembly according to claim 2, characterized in that, The quick-release bolt also includes a quick-release handle and a pressure plate; The two ends of the threaded rod are a head end and an end end, respectively. The head end is hinged to the eccentric part of the quick-release handle. The pressure plate is sleeved on the threaded rod and is located between the eccentric part and the end end. When one of the quick-release handles is connected to each end of the motor shaft, the pressure plate is located between the eccentric portion and the motor shaft.

4. A two-wheeled electric vehicle, comprising a rear fork assembly, said rear fork assembly including a first rear fork and a second rear fork arranged side by side, characterized in that, It also includes hub motors and quick-release bolts; The hub motor includes a motor shaft, wherein mounting channels are machined at both ends of the motor shaft, the center lines of the two mounting channels are coaxial with the axis of the motor shaft, and the inner walls of the two mounting channels are machined with internal threads. The number of quick-release bolts is two, and each quick-release bolt is provided with a threaded rod with external threads. The internal thread at either end of the motor shaft is used to connect to the external thread of one of the quick-release bolts. When the hub motor is mounted on the rear fork assembly and the two quick-release bolts are respectively connected to both ends of the motor shaft, the two quick-release bolts apply pressure to the first rear fork and the second rear fork, such that the first rear fork is clamped by one of the quick-release bolts and the motor shaft, and the second rear fork is clamped by the other quick-release bolt and the motor shaft.

5. The two-wheeled electric vehicle according to claim 4, characterized in that, The two ends of the motor shaft are the head end and the tail end, respectively; The motor shaft located at the head end is provided with a head end step portion, and a gap is formed between the head end step portion and the head end; The motor shaft located at the tail end is provided with a tail end step portion, and a gap is formed between the tail end step portion and the tail end; When the hub motor is mounted on the rear fork assembly and the two quick-release bolts are respectively connected to the two ends of the motor shaft, one surface of the first rear fork is face-to-face with the end face of the head end step portion, and one surface of the second rear fork is face-to-face with the end face of the tail end step portion.

6. The two-wheeled electric vehicle according to claim 5, characterized in that, The hub motor also includes a cable; At the head end, the motor shaft is also machined with a wire passage. The center line of the wire passage intersects with the axis of the motor shaft. Inside the motor shaft, the wire passage and the mounting channel located at the head end form a T-junction. The position where the T-junction is formed is defined as the intersection position. The outline of the wire passage intersects with the outline of the head end step. The internal thread in the motor shaft located at the head end is restricted between the head end and the cross position; The cable is configured to be inserted into the motor shaft through the cable passage, and a portion of the cable is accommodated at the crossing position; When the hub motor is mounted on the rear fork assembly, the cable located outside the cable passage is located outside the outline of the first rear fork.

7. The two-wheeled electric vehicle according to claim 6, characterized in that, The quick-release bolt also includes a quick-release handle and a pressure plate; The two ends of the threaded rod are a head end and an end end, respectively. The head end is hinged to the eccentric part of the quick-release handle. The pressure plate is sleeved on the threaded rod and is located between the eccentric part and the end end. When one of the quick-release handles is connected to each end of the motor shaft, the pressure plate is located between the eccentric portion and the motor shaft.

8. The two-wheeled electric vehicle according to claim 7, characterized in that, It also includes a first anti-rotation piece, which has a first flat pad portion for fitting onto the motor shaft and a first locking portion protruding from the first flat pad portion; The first rear fork is provided with a first slot, wherein the motor shaft is mounted in the first slot along the radial direction of the motor shaft; At the head end, the first anti-rotation plate is sleeved on the motor shaft via the first flat pad, and the first anti-rotation plate is restricted between the quick-release handle and the first rear fork located at the head end, wherein, along the axial direction of the motor shaft, the first locking protrusion engages with the first locking groove.

9. The two-wheeled electric vehicle according to claim 8, characterized in that, It also includes a second anti-rotation plate and a first U-shaped gasket; At the head end position, the first U-shaped washer is sleeved on the motor shaft, and the first U-shaped washer is confined between the first rear fork and the head end step; At the tail end, the second anti-rotation plate is sleeved on the motor shaft, and the second anti-rotation plate is restricted between the tail end step and the second rear fork.

10. The two-wheeled electric vehicle according to any one of claims 4 to 9, characterized in that, The two-wheeled electric vehicles specifically refer to electric bicycles, electric-assisted bicycles, or electric scooters.

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