A power kit and electric skateboard

Abstract

This utility model relates to the field of electric skateboard technology, and specifically discloses a power kit and electric skateboard, including an axle, two gearboxes, two drive wheels, and two drive components. The drive components and gearboxes are two independent structures, with the two gearboxes positioned opposite each other on both sides of the axle. Each gearbox has a groove on its opposite surface. The drive component is detachably fixed to the opposite surface of the gearbox, and its drive gear extends into the groove and meshes with the internal transmission gear assembly. The groove depth is less than the distance between the two drive components, providing operating space for disassembly. Through this method, this utility model embodiment allows for the disassembly of the drive components without affecting their movement, enabling the drive components to be directly removed from or installed from the gearboxes without disassembling them. This reduces the steps involved in assembling and disassembling the power kit, lowers maintenance costs, and improves maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to the field of electric skateboard technology, and in particular to a power kit and an electric skateboard. Background Technology

[0002] With the widespread use of electric four-wheeled skateboards in urban commuting and leisure sports, users' demands for power performance are constantly increasing. The power system of electric four-wheeled skateboards generally uses a motor paired with a gearbox to drive the wheels. Gearbox transmissions offer a reduction ratio, resulting in faster acceleration and braking response. Furthermore, the gearbox is a sealed structure, preventing foreign objects such as stones from entering and hindering the normal operation of the transmission mechanism when the electric four-wheeled skateboard is used on the ground. Therefore, electric four-wheeled skateboards using gearbox transmissions are a performance-oriented choice.

[0003] In the process of realizing this utility model, the inventors discovered that the motor and gearbox of traditional electric skateboards are integrated. When either the motor or the gearbox malfunctions, the entire power kit needs to be disassembled, resulting in high maintenance costs. Utility Model Content

[0004] The main technical problem solved by this utility model embodiment is to provide a power kit and electric skateboard, which aims to solve the problem that traditional electric skateboards require the entire power kit to be disassembled when any part of the motor or gearbox malfunctions, resulting in high maintenance costs.

[0005] To solve the above-mentioned technical problems, the present invention provides a power kit, including an axle, two gearboxes, two drive wheels, and two drive components. One gearbox is detachably fixed to the axle, and when the two gearboxes are fixed to the axle, they are respectively located on both sides of the axle and opposite to each other. One drive component is detachably fixed to the gearbox and is located on the side of the gearbox facing the axle. One drive wheel is connected to the side of the gearbox facing away from the axle. The rotational speed and torque generated by the drive component are transmitted to the drive wheel through the gearbox, thereby realizing the rotation of the drive wheel.

[0006] Optionally, the housing is provided with an annular positioning step on the inner wall of the groove; The housing of the drive component is provided with an annular positioning part. When the drive gear is received in the groove, the annular positioning part abuts against the annular positioning step.

[0007] Optionally, the transmission gear assembly further includes an output gear and an idler gear, both of which are rotatably disposed within the housing. The output gear and the idler gear mesh, and the idler gear meshes with the drive gear. The output shaft of the output gear is connected to the drive wheel, and the output shaft of the output gear is parallel to the drive shaft of the drive component.

[0008] Optionally, the housing is provided with a first mounting hole, and the outer shell of the drive component is provided with a first screw hole; The power kit includes a first screw that passes through the first mounting hole and is screwed into a first screw hole of the drive component.

[0009] Optionally, the housing includes an outer half-shell and an inner half-shell, which are detachably fixed. The outer half-shell and the inner half-shell enclose a receiving cavity, and the transmission gear assembly is located in the receiving cavity. The two inner half shells of the box shell are arranged opposite each other, and the opposing surfaces and the grooves are both located in the inner half shells.

[0010] Optionally, the outer half-shell is provided with a second mounting hole, and the inner half-shell is provided with a second screw hole; The housing also includes a second screw, which passes through a second mounting hole and is screwed into the second screw hole.

[0011] Optionally, the outer half-shell is provided with a receiving notch, and the second mounting hole is located on the bottom wall of the receiving notch. When the second screw passes through the second mounting hole and is screwed into the second screw hole, the second screw is received in the receiving notch.

[0012] Optionally, the inner half-shell is provided with a third screw hole, and the axle is provided with a third mounting hole; The power kit also includes a third screw, which passes through a third mounting hole and is screwed into the third screw hole.

[0013] Optionally, the axle further includes a connector for connecting the axle to the skateboard body.

[0014] To solve the above-mentioned technical problems, another technical solution adopted by this utility model is: to provide an electric skateboard, including a skateboard body and the above-mentioned power kit, wherein the skateboard body is disposed on the axle of the power kit.

[0015] The beneficial effects of this utility model embodiment are as follows: Unlike the prior art, this utility model embodiment provides a power kit, including an axle, two gearboxes, two drive wheels, and two drive components. The drive components and gearboxes are separated into two independent parts. The two gearboxes are respectively disposed on both sides of the axle, facing each other, and each of the facing surfaces of the two gearboxes has a groove. One drive component is detachably fixed to the facing surface of one gearbox. When the drive component is disposed on the facing surface of the gearbox, the drive gear of the drive component extends into the groove, and the drive gear of the drive component meshes with the transmission gear assembly inside the gearbox, realizing the combination of the drive component and the gearbox. When the drive component needs to be repaired, it can be removed for repair; when the gearbox needs to be repaired, it can be removed for repair.

[0016] Furthermore, since the depth L1 of the groove is less than the distance L2 between the two drive components, there is enough space between the two drive components for them to move. Therefore, the movement of the drive components is not affected when they are disassembled. This allows the drive components to be directly removed from or installed from the gearbox without disassembling the gearbox, reducing the steps of assembling and disassembling the power kit, lowering maintenance costs, and improving maintenance efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the power kit provided in an embodiment of the present utility model; Figure 2 This is an exploded view of the power kit provided in this embodiment of the utility model; Figure 3 This is a schematic diagram of the axle of the power kit provided in this embodiment of the utility model; Figure 4 This is an exploded view of one side of the power kit provided in this embodiment of the utility model; Figure 5 This is an exploded view of the other side of the power kit provided in this embodiment of the utility model; Figure 6 This is an enlarged schematic diagram of the receiving notch of the inner half shell of the power kit provided in this embodiment of the utility model.

[0019] Explanation of reference numerals in the attached figures: 100. Power kit; 10. Axle; 11. Axle body; 111. Third mounting hole; 12. Connecting component; 20. Gearbox; 21. Housing; 211. Outer half-shell; 2111. Second mounting hole; 2112. Receiving notch; 212. Inner half-shell; 2121. First mounting hole; 2122. Second screw hole; 2123. Third screw hole; 2124. Groove; 2125. Opposing surface; 2126. Annular positioning step; 213. Second screw; 22. Transmission gear assembly; 221. Output gear; 222. Output shaft; 223. Idler gear; 30. Drive wheels; 40. Drive assembly; 41. Drive component; 411. Drive shaft; 412. First screw hole; 413. Annular positioning part; 42. Drive gear; 50. First screw; 60. The third screw. Detailed Implementation

[0020] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this specification are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0022] Please see Figure 1 and Figure 2The power kit 100 includes: an axle 10, two gearboxes 20, two drive wheels 30, two drive components 40, two sets of first screws 50, and two sets of third screws 60. One gearbox 20 is detachably fixed to the axle 10 via a set of third screws 60. When both gearboxes 20 are fixed to the axle 10, they are respectively positioned on both sides of the axle 10, facing each other. One drive component 40 is detachably fixed to the gearbox 20 via a set of first screws 50, and is located on the side of the gearbox 20 facing the axle 10. One drive wheel 30 is connected to the side of the gearbox 20 facing away from the axle 10. The rotational speed and torque generated by the drive component 40 are transmitted to the drive wheel 30 through the gearbox 20, causing the drive wheel 30 to rotate.

[0023] For the aforementioned axle 10, please refer to... Figure 3 The axle 10 includes an axle body 11 and a connector 12 disposed on the axle 10. The connector 12 is used to connect the axle 10 to the skateboard body.

[0024] The axle body 11 is also provided with a third mounting hole 111, which is used to connect with the gearbox 20.

[0025] For the gearbox 20 mentioned above, please refer to... Figures 4 to 6 The gearbox 20 includes a housing 21 and a transmission gear assembly 22. The transmission gear assembly 22 is disposed inside the housing 21 and meshes with the drive assembly 40 and the drive wheel 30 respectively. The gearbox 20 can transmit the speed and torque output by the drive assembly 40 to the drive wheel 30 to realize the transmission of kinetic energy.

[0026] Specifically, the housing 21 includes an outer half-shell 211, an inner half-shell 212, and a second screw 213. The inner half-shell 212 is provided with a first mounting hole 2121, a second screw hole 2122, a third screw hole 2123, and a groove 2124. The outer half-shell 211 is provided with a second mounting hole 2111 and a receiving notch 2112, with the second mounting hole 2111 located on the bottom wall of the receiving notch 2112. When the outer half-shell 211 and the inner half-shell 212 are mated, the second mounting hole 2111 and the second screw hole 2122 are aligned, and the second screw 213 passes through the second mounting hole 2111 and is screwed into the second screw hole 2122, thus enabling the inner half-shell 212 and the outer half-shell 211 to be detachably fixed. The nut of the second screw 213 is received in the receiving notch 2112, and the nut of the second screw 213 does not protrude from the receiving notch 2112, thereby increasing the flatness of the outer surface of the housing 21 and improving the aesthetics of the housing 21. After the outer half shell 211 and the inner half shell 212 are fixed, the outer half shell 211 and the inner half shell 212 enclose a receiving cavity, which is used to place the transmission gear assembly 22. The inner half shell 212 is also provided with a groove 2124, which communicates with the receiving cavity and is used to receive the drive gear 42 of the drive assembly 40.

[0027] In some embodiments, the number of second screws 213, second mounting holes 2111 and second screw holes 2122 can be multiple. Multiple second mounting holes 2111 are spaced circumferentially along the outer half shell 211, and second screw holes 2122 are spaced circumferentially along the inner half shell 212. A second screw 213 passes through a second mounting hole 2111 and is screwed into a second screw hole 2122.

[0028] It is understood that the fixing between the inner half shell 212 and the outer half shell 211 is not limited to the above-mentioned method. Other fixing methods can also be used, such as: the inner half shell 212 is provided with a hook, and the outer half shell 211 is provided with a hole. The hook is engaged with the hole to achieve detachable fixing of the inner half shell 212 and the outer half shell 211.

[0029] The third screw 60 passes through the third mounting hole 111 of the axle 10 and is screwed into the third screw hole 2123, thereby detachably fixing the gearbox 20 to the axle 10. Of course, other detachable fixing methods can also be used between the gearbox 20 and the axle 10, such as snap-fit ​​fixing.

[0030] The first mounting hole 2121 is used to fix the gearbox 20 to the drive assembly 40. When both gearboxes 20 are fixed to both sides of the axle 10, the inner half shells 212 of the housing 21 of the two gearboxes 20 are arranged opposite each other. The surface of the inner half shell 212 of the housing 21 of one gearbox 20 facing the other gearbox 20 is the opposite surface 2125. The groove 2124 is located on the opposite surface 2125, and the depth of the groove 2124 is L1. In other words, the gearbox 20 allows the drive gear 42 of the drive assembly 40 to be inserted to a maximum depth of L1.

[0031] The transmission gear assembly 22 includes an output gear 221 and an idler gear 223. Both the output gear 221 and the idler gear 223 are rotatably disposed within the housing 21 of the gearbox 20, and the output gear 221 and the idler gear 223 mesh. The output shaft 222 of the output gear 221 is connected to the drive wheel 30, and the idler gear 223 is used to mesh with the drive gear 42 into which the drive assembly 40 is inserted into the groove 2124.

[0032] It is worth noting that the gear ratios of the output gear 221 and the idler gear 223 are different and can be configured according to the actual required reduction ratio. Of course, the number of idler gears 223 can be set to multiple, and multiple idler gears 223 can mesh in sequence, depending on the required reduction ratio.

[0033] For the drive wheel 30 mentioned above, please refer to... Figure 5 The drive wheel 30 is mounted on the output shaft 222 of the output gear 221, so that the drive wheel 30 is connected to the transmission gear assembly 22 of the gearbox 20, and the power of the gearbox 20 is transmitted to the drive wheel 30.

[0034] For the aforementioned driver component 40, please refer to... Figure 4 and Figure 6 The drive assembly 40 includes a drive member 41 and a drive gear 42. The drive member 41 is provided with a drive shaft 411, and the drive gear 42 is mounted on the drive shaft 411. The outer shell of the drive member 41 is provided with a first screw hole 412. The drive gear 42 is inserted into a groove 2124 and meshes with the idler gear 223 of the transmission gear assembly 22. The first screw hole 412 is aligned with the first mounting hole 2121. A first screw 50 passes through the first mounting hole 2121 and is screwed into the first screw hole 412, thereby detachably fixing the drive member 41 to the opposite surface 2125 of the gearbox 20. The drive member 41 drives the transmission gear assembly 22 in the gearbox 20 through the drive gear 42. The transmission gear assembly 22 in the gearbox 20 drives the drive wheel 30, thereby realizing the transmission of power.

[0035] In some embodiments, the inner half-shell 212 of the gearbox 20 is provided with an annular positioning step 2126 on the inner wall of the groove 2124, and the outer shell of the drive member 41 is provided with an annular positioning part 413. During the process of the drive gear 42 of the drive assembly 40 being inserted into the groove 2124 and the drive member 41 and the gearbox 20 being tightened and fixed by the first screw 50, after the annular positioning part 413 and the annular positioning step 2126 are in contact and abut against each other, the first screw 50 is tightened to its maximum limit. At this time, because the annular positioning part 413 and the annular positioning step 2126 are in contact and abut against each other, the first screw 50 is tightened to its maximum limit. Furthermore, the contact between the drive gear 42 and the idler gear 223 helps to ensure the meshing of the drive shaft 411 of the drive assembly 40 and the annular positioning step 2126. The output shaft 222 of the output gear 221 of the gearbox 20 is pre-set to be perpendicular to the annular positioning step 2126. Thus, through the cooperation of the annular positioning part 413 and the annular positioning step 2126, it is beneficial to achieve the parallelism between the output shaft 222 of the output gear 221 of the gearbox 20 and the drive shaft 411 of the drive assembly 40 when the drive assembly 40 is installed on the gearbox 20.

[0036] It is understood that the fixing between the drive assembly 40 and the gearbox 20 is not limited to the above-mentioned method, and other fixing methods can also be used, such as the drive assembly 40 and the gearbox 20 being fixed by snap-fit.

[0037] Since the drive assembly 40 is installed on the opposite surface 2125 of the gearbox 20, it is equivalent to the two drive assemblies 40 being located between the two gearboxes 20. Along the opposite direction of the two gearboxes 20, the distance between the two drive assemblies 40 is L2, which is greater than the depth L1 of the groove 2124. Therefore, the drive assembly 40 can be directly removed from the gearbox 20 without disassembling the gearbox 20, reducing disassembly steps and improving work efficiency.

[0038] To facilitate the reader's understanding of this utility model, the assembly process of the power kit 100 of this utility model is described below: When the user installs the power kit 100, the first step is to install the gearbox 20. The user places the idler gear 223 and output gear 221 of the gearbox 20's transmission components inside the gearbox 20's housing. Then, the user screws the second screw 213 through the second mounting hole 2111 of the outer half-shell 211 and the second screw hole 2122 of the inner half-shell 212 to secure the inner half-shell 212 and outer half-shell 211, thus completing the installation of the gearbox 20. The second step is to install the gearbox 20 onto the axle 10. The user faces the axle 10 with the opposite face 2125 of the gearbox 20 facing the axle 10, aligns the third screw hole 2123 of the gearbox 20 with the third mounting hole 111 of the axle 10, and screws the third screw 60 through the third mounting hole 111 and the third screw hole 2123 to secure the gearbox 20 to the axle 10. The third step is to install the drive... The drive wheel 30 is connected to the transmission gear assembly 22 of the gearbox 20, and the drive wheel 30 is connected to the output shaft 222 of the output gear 221, thus completing the installation of the drive wheel 30 on the outer half shell 211 of the gearbox 20. The final step is to install the drive assembly 40 on the opposite surface 2125 of the gearbox 20, install the drive gear 42 on the drive member 41, and then house the drive gear 42 in the groove 2124 of the gearbox 20, so that the drive gear 42 meshes with the transmission gear assembly 22. The annular positioning part 413 of the drive member 41 abuts against the annular positioning step 2126 of the inner half shell 212. The first screw 50 passes through the first mounting hole 2121 of the gearbox 20 and is screwed into the first screw hole 412 of the drive member 41, thus realizing the installation and fixation of the drive assembly 40 and the gearbox 20. At this point, the power kit 100 has been fixedly installed.

[0039] When the drive assembly 40 starts to output power, the drive gear 42 of the drive assembly 40 rotates. Since the drive gear 42 meshes with the idler gear 223 in the gearbox 20, and the idler gear 223 also meshes with the output gear 221, the power of the drive gear 42 is transmitted to the output gear 221. The drive wheel 30 is mounted on the output shaft 222 of the output gear 221, and the output shaft 222 drives the drive wheel 30, thereby realizing the transfer of kinetic energy from the drive assembly 40 to the drive wheel 30.

[0040] In this embodiment of the utility model, the power kit 100 includes an axle 10, two gearboxes 20, two drive wheels 30, and two drive components 40. The drive components 40 and the gearboxes 20 are separated into two independent parts. The two gearboxes 20 are respectively disposed on both sides of the axle 10, and the two gearboxes 20 are arranged opposite each other. The opposing surfaces 2125 of the two gearboxes 20 are provided with grooves 2124. One drive component 40 is detachably fixed to the opposing surface 2125 of one gearbox 20. When the drive component 40 is disposed on the opposing surface 2125 of the gearbox 20, the drive gear 42 of the drive component 40 extends into the groove 2124 and meshes with the transmission gear assembly 22 inside the gearbox 20, thereby realizing the combination of the drive component 40 and the gearbox 20. When the drive component 40 needs to be repaired, it can be removed for repair. When the gearbox 20 needs to be repaired, it can be removed for repair.

[0041] Furthermore, since the depth L1 of the groove 2124 is less than the distance L2 between the two drive components 40, there is sufficient space between the two drive components 40 for them to move. Therefore, when disassembling the drive component 40, it does not affect the movement of the drive component 40. This allows the drive component 40 to be directly removed from or installed in the gearbox 20 without disassembling the gearbox 20, reducing the steps of assembling and disassembling the power kit 100, lowering maintenance costs, and improving maintenance efficiency.

[0042] This utility model also provides an embodiment of an electric skateboard, which includes a skateboard body and a power kit 100, with the skateboard body disposed on the axle 10 of the power kit 100. For the specific structure and function of the power kit 100, please refer to the above embodiments, which will not be repeated here.

[0043] It should be noted that while the preferred embodiments of this utility model are provided in the specification and accompanying drawings, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are not intended to impose additional limitations on the content of this utility model; their purpose is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Furthermore, the above-described technical features can be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of this utility model specification. Moreover, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A power kit, characterized in that, include: Axle; Two gearboxes, each gearbox including a housing and a transmission gear assembly disposed within the housing, are respectively disposed on both sides of the axle and are arranged opposite to each other. The surface of the housing of one gearbox facing the other gearbox is a facing surface, and the facing surface is provided with a groove with a depth of L1. Two drive wheels, one of which is connected to a transmission gear assembly of a gearbox; Two drive components, each drive component including a drive member and a drive gear, the drive gear being mounted on the drive shaft of the drive member, one drive component being detachably mounted on the opposite side of a gearbox, the drive gear being received in the groove, and the drive gear meshing with a transmission gear assembly inside the gearbox, the drive member driving the transmission gear assembly inside the gearbox via the drive gear, and the transmission gear assembly inside the gearbox driving the drive wheel; Wherein, along the opposite direction of the two gearboxes, the distance between the two drive components is L2, where L2>L1.

2. The power kit according to claim 1, characterized in that, The housing has an annular positioning step on the inner wall of the groove; The housing of the drive component is provided with an annular positioning part. When the drive gear is received in the groove, the annular positioning part abuts against the annular positioning step.

3. The power kit according to claim 2, characterized in that, The transmission gear assembly also includes an output gear and an idler gear, both of which are rotatably mounted inside the housing. The output gear and the idler gear mesh, and the idler gear meshes with the drive gear. The output shaft of the output gear is connected to the drive gear, and the output shaft of the output gear is parallel to the drive shaft of the drive component.

4. The power kit according to claim 1, characterized in that, The housing is provided with a first mounting hole, and the outer shell of the drive component is provided with a first screw hole; The power kit includes a first screw that passes through the first mounting hole and is screwed into a first screw hole of the drive component.

5. The power kit according to claim 1, characterized in that, The housing includes an outer half-shell and an inner half-shell, which are detachably fixed. The outer half-shell and the inner half-shell enclose a receiving cavity, and the transmission gear assembly is located in the receiving cavity. The two inner half shells of the box shell are arranged opposite each other, and the opposing surfaces and the grooves are both located in the inner half shells.

6. The power kit according to claim 5, characterized in that, The outer half-shell is provided with a second mounting hole, and the inner half-shell is provided with a second screw hole; The housing also includes a second screw, which passes through a second mounting hole and is screwed into the second screw hole.

7. The power kit according to claim 6, characterized in that, The outer half-shell is provided with a receiving notch, and the second mounting hole is located on the bottom wall of the receiving notch. When the second screw passes through the second mounting hole and is screwed into the second screw hole, the second screw is received in the receiving notch.

8. The power kit according to claim 5, characterized in that, The inner half-shell is provided with a third screw hole, and the axle is provided with a third mounting hole; The power kit also includes a third screw, which passes through a third mounting hole and is screwed into the third screw hole.

9. The power kit according to any one of claims 1-8, characterized in that, The axle also includes a connector for connecting the axle to the skateboard body.

10. An electric skateboard, characterized in that, It includes a skateboard body and a power kit as described in any one of claims 1-9, wherein the skateboard body is disposed on the axle of the power kit.

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