CN210121325U - Bridge frame assembly of electric skateboard - Google Patents

Abstract

The utility model belongs to the technical field of electric skateboard, a crane span structure subassembly of electric skateboard is related to. It has solved among the prior art technical problem that not unidimensional slide wheel can not be changed to electric skateboard. It includes the crane span structure, is equipped with the wheel hub installation department that the symmetry set up respectively in the crane span structure both sides, but detachably installs the steamboat or the bull wheel of mutual replacement on each wheel hub installation department, is fixed with the motor support that two symmetries set up on the crane span structure, and motor support one end is fixed on the crane span structure, and the other end outwards is the cantilever type and extends, is fixed with the motor at the one end that motor support outwards extends, and when the steamboat was installed to the wheel hub installation department motor support enough terrain clearance in order to avoid the motor to be collided. Compared with the prior art, the utility model has the advantages of can select to change the slide plate wheel of unidimensional not according to the road conditions.

Description

Bridge frame assembly of electric skateboard

Technical Field

The utility model belongs to the technical field of electric skateboard, especially, relate to an electric skateboard's crane span structure subassembly.

Background

The performance such as scooter wheel size, hardness of electric skateboard produces different experiences to the user when using the slide. During the use, the electric skateboard can be used in different road conditions, and the skateboard wheels with different sizes need to be matched to obtain adaptive performance, for example, 38-40mm wheels are fewer users, and due to the small size, the wheels are started and accelerated quickly, but have small back force and are suitable for very flat roads; wheels of 45mm-50mm are the most suitable sliding plate wheels for road type; the 52-60mm slide plate wheel is suitable for various props, and can bring sufficient power to users although the starting speed is slow; in the field, the cross-country wheel with the diameter of more than 60mm is more suitable, and the professional mountain skateboard is a large wheel made of rubber. However, in the prior art, the large wheel and the small wheel are difficult to replace, and even if the small wheel can be replaced, the motor is easy to be installed with higher requirements due to the fact that the diameter of the small wheel is too small. The reason is that when the small wheel is used, the motor and other parts are easy to collide, especially when the small wheel is used on uneven road surfaces.

Disclosure of Invention

The utility model aims at the above-mentioned problem, provide an electric skateboard's crane span structure subassembly.

In order to achieve the above purpose, the utility model adopts the following technical proposal: this electric skateboard's crane span structure subassembly, including the crane span structure, be equipped with the wheel hub installation department that the symmetry set up respectively in the crane span structure both sides, detachably installs the steamboat or the bull wheel that can replace each other on each wheel hub installation department, the crane span structure on be fixed with the motor support that two symmetries set up, motor support one end fix on the crane span structure, the other end outwards is the cantilever type and extends, the one end that outwards extends at the motor support is fixed with the motor, the motor and the steamboat that are located the crane span structure homonymy link to each other or the motor and the bull wheel that are located the crane span structure homonymy pass through drive mechanism and link to each other, and when installing the steamboat on the wheel hub installation department.

In foretell electric skateboard's crane span structure subassembly, drive mechanism is including setting up at the epaxial drive wheel of the power of motor, locating the steamboat drive wheel on the steamboat and locating the bull wheel drive wheel on the bull wheel, steamboat and steamboat drive wheel can dismantle and link firmly or even formula structure as an organic whole, bull wheel and bull wheel drive wheel can dismantle and link firmly or even formula structure as an organic whole, the drive wheel that is located the crane span structure homonymy links to each other through little annular transmission band with the steamboat drive wheel or the drive wheel that is located the crane span structure homonymy links to each other through big annular transmission band with the.

In the bridge assembly of the electric skateboard, a plurality of transmission columns distributed in the circumferential direction are arranged on the outer side of a small wheel transmission wheel, a plurality of transmission holes distributed in the circumferential direction are formed in the small wheel, the transmission columns correspond to the transmission holes one by one, and the transmission columns are inserted into the transmission holes; the bull wheel include outside wheel hub and inboard wheel hub, outside wheel hub and inboard wheel hub on be equipped with the locating hole that corresponds the setting respectively, thereby wear to be equipped with positioning bolt and link firmly outside wheel hub and inboard wheel hub in the locating hole that corresponds the setting, inboard wheel hub and bull wheel drive wheel can dismantle and link firmly or even formula structure as an organic whole.

In the bridge assembly of the electric skateboard, the small wheel driving wheel is cylindrical, a small gear ring is arranged on the periphery of the small wheel driving wheel, the large wheel driving wheel is cylindrical, a large gear ring is arranged on the periphery of the large wheel driving wheel, the driving wheel is a gear, and the small annular transmission belt and the large annular transmission belt are respectively an internal gear transmission belt; the outer diameter of the small wheel driving wheel is smaller than the inner diameter of the large wheel driving wheel.

In the bridge assembly of the electric skateboard, when a small wheel is separated from the hub mounting part, the small wheel driving wheel is separated from the hub mounting part along with the small wheel or the small wheel driving wheel is kept on the hub mounting part; when the bull wheel is separated from the hub mounting part, the bull wheel driving wheel is separated from the hub mounting part along with the bull wheel or the bull wheel driving wheel is remained on the hub mounting part; at least one small wheel bearing is arranged between the small wheel and the hub mounting part and is fixed on the small wheel; at least one bull wheel bearing is arranged between the bull wheel and the hub mounting part and is fixed on the bull wheel; the outer end of the hub mounting part is provided with a stop nut.

In the bridge assembly of the electric skateboard, the motor bracket is of a long flat structure, one end of the motor bracket is provided with a through hole, and the through hole is fixedly connected with the bridge in a penetrating way; at least two extending parts extending along the axial direction of the hub mounting part are arranged on one side of the through hole, the extending parts are tile-shaped, and the inner walls of the extending parts are attached to the outer surface of the bridge frame; the bridge frame is provided with a first annular step, the through hole is internally provided with a second annular step, and the first annular step and the second annular step are mutually matched.

In the bridge assembly of the electric skateboard, the motor is horizontally arranged, a power shaft of the motor penetrates from one side of the motor support to the other side of the motor support, a power bearing is arranged in front of the power shaft and the motor support, and the driving wheel is arranged at the outer end of the power shaft.

In the bridge assembly of the electric skateboard, one side of the motor bracket, which is provided with the motor, is provided with a sunken area, one end of the motor is positioned in the sunken area, and the motor is fixed on the motor bracket through a plurality of fastening screws; the other side of the motor bracket is provided with a surrounding edge positioned at the periphery of the transmission mechanism; a protective cover is fixed on the surrounding edge so as to protect the transmission structure; the motor support is arranged in parallel with the horizontal plane or is arranged from the motor support in an outward inclined and upward manner.

In foretell electric skateboard's crane span structure subassembly, the crane span structure middle part is equipped with the installation arm that the slope set up, is equipped with the mount pad in the top of installation arm, the top of mount pad installation face that has the level setting, the installation arm link to each other through the shock attenuation coupling assembling that the slope set up with the mount pad, the incline direction of installation arm opposite with shock attenuation coupling assembling's incline direction.

In the bridge assembly of the electric skateboard, an accommodating hole which is positioned on the mounting seat and is obliquely arranged is arranged below the mounting surface, and the upper end of the mounting arm is positioned in the accommodating hole; the upper end of the mounting arm is a columnar body, a gap is reserved between the upper end of the mounting arm and the bottom of the accommodating hole, and/or a gap is reserved between the side surface of the mounting arm and the wall of the accommodating hole; the upper end of the mounting arm has a smooth surface and/or the bottom of the receiving hole has a smooth surface.

In the bridge assembly of the electric skateboard, the lower part of the upper end part of the mounting arm is flat and the width of the mounting arm is gradually increased from the upper end to the lower end; shock attenuation coupling assembling include first clamp, second clamp and connecting bolt, first clamp be located installation arm one side and be located between mount pad and the installation arm, the second clamp be located the opposite side of installation arm, the connecting bolt wear to locate between mount pad, first clamp, installation arm and the second clamp, and the connecting bolt is through fastening structure with mount pad, first clamp, installation arm and second clamp.

In the bridge frame assembly of the electric skateboard, the connecting bolt is a bolt, one end of the bolt is provided with a raised head, the other end of the bolt is in threaded connection with a nut, the mounting seat, the first clamp body, the mounting arm and the second clamp body are clamped tightly by the raised head and the nut, and the first clamp body and the second clamp body are made of damping materials.

In the bridge assembly of the electric skateboard, a first clamping support is arranged at one end, close to the mounting seat, of the first clamping body, a second clamping support is arranged at one end, far away from the mounting arm, of the second clamping body, the first clamping support is provided with a first surrounding edge surrounding the periphery of the first clamping body, and the second clamping support is provided with a second surrounding edge surrounding the periphery of the second clamping body.

In foretell electric skateboard's crane span structure subassembly, the mount pad includes high portion and low portion, high portion and low portion even outer end branching setting as an organic whole and high portion and low portion, high portion and low portion junction be the arc transition, holding hole set up in high portion, damping coupling assembling wear to locate the low portion.

Compared with the prior art, the bridge assembly of the electric skateboard has the advantages that:

1. the user can change bull wheel and steamboat according to the use scene of difference, improves electric skateboard to the adaptability of use scene to improve electric skateboard's actual performance, and when the steamboat is installed to the wheel hub installation department the motor support enough terrain clearance in order to avoid the motor to be collided.

2. Motor support fixed mounting avoids contacting with the slide footboard on the crane span structure, avoids in the use, and the slide footboard takes place to deform by external force and influences transmission structure's transmission precision and transmission structure's life, and the mechanism is simple, low in production cost.

3. The inclination direction of installation arm is opposite with shock attenuation coupling assembling's inclination direction, and at the electric skateboard in-process that slides, can the horizontal vibrations of effective absorption and vertical vibrations, improve the effect of moving away to avoid possible earthquakes greatly, improve travelling comfort and security performance.

Drawings

Fig. 1 is a schematic structural diagram provided by the present invention.

Fig. 2 is an exploded view provided by the present invention.

Fig. 3 is a sectional view of the wheel driving wheel of the present invention.

Fig. 4 is a sectional view of the small wheel driving wheel.

Fig. 5 is a schematic view of a motor support structure provided by the present invention.

Fig. 6 is a cross-sectional view taken at a in fig. 5 according to the present invention.

Fig. 7 is an exploded view of the shock-absorbing connection assembly provided by the present invention.

Fig. 8 is a sectional view of the shock-absorbing connecting assembly provided by the present invention.

In the figure, the bridge 1, the hub mounting part 2, the small wheel 3, the large wheel 4, the motor bracket 5, the motor 6, the driving wheel 7, the small wheel driving wheel 8, the large wheel driving wheel 9, the small annular transmission belt 10, the large annular transmission belt 11, the transmission column 12, the transmission hole 13, the outer hub 14, the inner hub 15, the positioning hole 16, the small gear ring 17, the large gear ring 18, the small wheel bearing 19, the large wheel bearing 20, the stop nut 21, the through hole 22, the extension part 23, the first annular step 24, the second annular step 25, the power bearing 26, the recessed area 27, the fastening screw 28, the surrounding edge 29, the protective cover 30, the mounting arm 31, the mounting seat 32, the mounting surface 33, the shock absorption connecting component 34, the accommodating hole 35, the first clamp 36, the second clamp 37, the connecting bolt 38, the raised head 39, the nut 40, the first clamp holder 41, the second clamp holder 42, the high part 43 and the low part 44.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, this electric skateboard's crane span structure subassembly, including crane span structure 1, be equipped with the wheel hub installation department 2 that the symmetry set up respectively in crane span structure 1 both sides, but each wheel hub installation department 2 goes up detachably installs the steamboat 3 or bull wheel 4 of mutual replacement, crane span structure 1 on be fixed with two motor support 5 that the symmetry set up, motor support 5 one end fix on crane span structure 1, the other end outwards is the cantilever type and extends, the one end of extending outside motor support 5 is fixed with motor 6, motor 6 and steamboat 3 that are located crane span structure 1 homonymy link to each other or motor 6 and bull wheel 4 that are located crane span structure 1 homonymy link to each other through drive mechanism, and when installing steamboat 3 on the wheel hub installation department 2 motor support 5 have sufficient terrain clearance in order to avoid motor 6 to be collided.

According to service environment selection bull wheel 4 or steamboat 3, will originally install on wheel hub installation department 3 steamboat 3 or bull wheel 4 and tear open, install bull wheel 4 or steamboat 3 on wheel hub installation department 3 through drive mechanism with be located the motor 6 transmission connection of 1 homonymy of crane span structure, improved electric skateboard's adaptability to service environment greatly, promoted electric skateboard's performance, and easy dismounting, maneuverability is strong. Two motor support 5 are fixed mounting respectively have motor 6, and two motors 6 control two bull wheels 4 or two steamboats 3 that correspond the transmission and connect respectively, and two bull wheels 4 or two steamboats 3 realize independent control respectively.

Motor support 5 one end is the cantilever type and extends, and other end fixed mounting avoids contacting with the slide footboard on crane span structure 1, avoids in the use, and the slide footboard receives external force to take place deformation influence motor 6 and bull wheel 4 or the relative position between the steamboat 3, influences transmission structure's transmission precision and transmission structure's life.

Specifically, the transmission mechanism comprises a driving wheel 7 arranged on a power shaft of the motor 6, a small wheel transmission wheel 8 arranged on the small wheel 3 and a large wheel transmission wheel 9 arranged on the large wheel 4. In this embodiment, the small wheel 3 and the small wheel driving wheel 8 can be detachably and fixedly connected or connected to form an integrated structure, and the large wheel 4 and the large wheel driving wheel 9 can be detachably and fixedly connected or connected to form an integrated structure. The driving wheel 7 and the small wheel driving wheel 8 which are positioned on the same side of the bridge frame 1 are connected through a small annular conveying belt 10 or the driving wheel 7 and the large wheel driving wheel 9 which are positioned on the same side of the bridge frame 1 are connected through a large annular conveying belt 11. The big wheel 4 and the small wheel 3 are changed by the big wheel driving wheel 9 and the small wheel driving wheel 8, the output power of the same motor is small, and the corresponding transmission ratio is obtained, so that the big wheel 4 and the small wheel 3 are ensured to obtain basically the same linear speed when being driven by the motor 6, and a user is ensured to adapt to and control the electric skateboard more easily.

Furthermore, the small wheel transmission wheel 8 is cylindrical, a small gear ring 17 is arranged on the periphery of the small wheel transmission wheel 8, the large wheel transmission wheel 9 is cylindrical, a large gear ring 18 is arranged on the periphery of the large wheel transmission wheel 9, the driving wheel 7 is a gear, and the small annular transmission belt 10 and the large annular transmission belt 11 are respectively an internal gear transmission belt; the outer diameter of the small wheel driving wheel 8 is smaller than the inner diameter of the large wheel driving wheel 9. The transmission ratio between the motor 6 and the small wheel transmission wheel 8 is larger than the transmission ratio between the motor 6 and the large wheel transmission wheel 9, the linear velocity difference between the small wheel 3 and the large wheel 4 is reduced under the same output power of the motor, the large wheel 4 and the small wheel 3 are ensured to obtain basically the same linear velocity when driven by the motor, and a user is ensured to adapt to and control the electric skateboard more easily. Meanwhile, the angular speed of the large wheel 4 is reduced, so that the torque obtained by the large wheel 4 is larger than that obtained by the small wheel 3, and the electric skateboard has stronger power on uneven roads.

Preferably, a plurality of transmission columns 12 distributed in the circumferential direction are arranged on the outer side of the small wheel transmission wheel 8, a plurality of transmission holes 13 distributed in the circumferential direction are arranged on the small wheel 3, the transmission columns 12 correspond to the transmission holes 13 one by one, and the transmission columns 12 are inserted into the transmission holes 13; the small wheel driving wheel 8 and the small wheel 3 are fixedly connected through the driving column 12 and the driving hole 13 in an inserting mode, relative rotation between the small wheel driving wheel 8 and the small wheel 3 is limited, and effective transmission between the small wheel driving wheel 8 and the small wheel 3 is achieved.

Further, the bull wheel 4 includes an outer side wheel hub 14 and an inner side wheel hub 15, the outer side wheel hub 14 and the inner side wheel hub 15 on be equipped with the locating hole 16 that corresponds the setting respectively, and wear to be equipped with positioning bolt thereby with outer side wheel hub 14 and inner side wheel hub 15 link firmly in the locating hole 16 that corresponds the setting. In order to adapt to uneven road conditions, in this embodiment, a first limit step and a second limit step are respectively arranged on the outer hub 14 and the inner hub 15, and a large rim is clamped between the first limit step and the second limit step and is made of elastic rubber. In this embodiment, the inner hub 15 and the bull wheel drive wheel 9 are connected to form an integral structure, and those skilled in the art can also connect the inner hub 15 and the bull wheel drive wheel 9 in a detachable and fixed manner.

In the embodiment, when the small wheel 3 is separated from the hub mounting part 2, the small wheel driving wheel 8 is separated from the hub mounting part 2 along with the small wheel 3, or the small wheel driving wheel 8 is remained on the hub mounting part 2; when the bull wheel 4 is separated from the hub mounting part 2, the bull wheel driving wheel 9 is separated from the hub mounting part 2 along with the bull wheel 4 or the bull wheel driving wheel 9 is remained on the hub mounting part 2. When the large wheel 4 or the small wheel 3 is replaced, the large wheel 4 together with the large wheel transmission wheel 9 or the small wheel 3 together with the small wheel transmission wheel 8 can be detached from the hub installation part 2. After the hub mounting part 2 is detached, the large wheel 4 and the large wheel driving wheel 9 or the small wheel 3 and the small wheel driving wheel 8 are always fixedly connected, so that the installation when the large wheel 4 or the small wheel 3 is replaced next time is facilitated, the installation flow is simplified, and the installation and replacement efficiency is improved. In this embodiment, when the small wheel 3 is separated from the hub mounting portion 2, the small wheel driving wheel 8 is separated from the hub mounting portion 2 along with the small wheel 3, and when the large wheel 4 is separated from the hub mounting portion 2, the large wheel driving wheel 10 is separated from the hub mounting portion 3 along with the large wheel hub 5, so that the installation is convenient, and the installation steps are reduced. The user can also leave the small wheel drive wheel 9 on the hub mounting shaft 3 after disassembling the small wheel hub 4 and leave the large wheel drive wheel 10 on the hub mounting shaft 3 when disassembling the large wheel hub 5.

At least one small wheel bearing 19 is arranged between the small wheel 3 and the hub mounting part 2, and the small wheel bearing 19 is fixed on the small wheel 3; at least one bull wheel bearing 20 is arranged between the bull wheel 4 and the hub mounting part 2, and the bull wheel bearing 20 is fixed on the bull wheel 4; the outer end of the hub mounting part 2 is provided with a stop nut 21. The diameter of the inner ring hole of the large wheel bearing 20 is the same as that of the inner ring hole of the small wheel bearing 19, and the hub mounting part 2 is an optical axis, so that when the hub mounting part 2 can be matched with the large wheel 4 and the small wheel 3, the hub mounting part 2 can be smoothly mounted on the hub mounting part 2 when the large wheel 4 and the small wheel 3 are assembled and disassembled.

Preferably, motor support 5 is the flat structure of elongated, is equipped with through-hole 22 and the crane span structure 1 wears to establish at the one end of motor support 5 and links firmly, and in the installation, behind through-hole 22 was passed to wheel hub installation department 2 for motor support 5 fixes on wheel hub installation department 2, realizes motor support 5's location. The plane of the flat direction of the motor support 5 is perpendicular to the axial direction of the hub installation part 2, and the end part of the motor 6 can be fixed on the motor support 5, so that the power shaft of the motor 6 is parallel to the axial direction of the hub installation part 2. More preferably, in this embodiment, one end of the motor 6 close to the power shaft is fixedly connected to the motor bracket 5, so as to further reduce the vibration of the output end of the motor 6 and improve the precision of the output transmission of the motor.

Furthermore, one side of the through hole 22 is provided with at least two extending parts 23 which extend along the axial direction of the hub mounting part 2, the extending parts 23 are tile-shaped, and the inner walls of the extending parts 23 are attached to the outer surface of the bridge frame 1; the extension part 23 increases the contact area between the motor bracket 5 and the hub installation part 2, further reduces the risk that the motor bracket 5 shakes and twists under the action of external force, ensures the position stability of the motor 6 in the use process, and removes adverse factors influencing the output precision of the motor 6. The bridge frame 1 is provided with a first annular step 24, the through hole 22 is internally provided with a second annular step 25, and the first annular step 24 and the second annular step 25 are mutually matched. Through mutually supporting of first annular platform 24 and second annular platform 25, further carry on spacingly to motor support 5 for motor support 5 all has effectual spacingly along crane span structure 1 axial both ends, prevents motor support 5 atress rotatory.

The motor 6 is horizontally arranged, a power shaft of the motor 6 penetrates from one side of the motor support 5 to the other side of the motor support 5, a power bearing 26 is arranged between the power shaft and the motor support 5, and the driving wheel 7 is arranged at the outer end of the power shaft. The central axis of the power shaft and the central axis of the hub mounting part 2 are arranged in parallel. In the present embodiment, two motors 6 are located between two motor brackets 5. The motor 6 is horizontally arranged, so that a power shaft of the motor 6 is horizontal to a central shaft of the bridge frame 1, and a transmission reversing mechanism is omitted from the transmission structure, so that the transmission structure is simpler and more compact, and the energy loss and the occupied volume of the transmission structure are reduced.

A sunken area 27 is arranged on one side of the motor bracket 5, which is provided with the motor 6, one end of the motor 6 is positioned in the sunken area 27, and the motor 6 is fixed on the motor bracket 5 through a plurality of fastening screws 28; the side wall of the depressed area 27 abuts against the outer wall of the motor 6 to limit the movement of the motor 6, and is further fastened to the motor bracket 5 by a fastening screw. The other side of the motor support 5 is provided with a surrounding edge 29 which is positioned at the periphery of the transmission mechanism, and a protecting cover 30 is fixed on the surrounding edge 29, so that the transmission structure is protected, and external dust, stones and splashed water are prevented from entering the transmission structure to damage the transmission structure. The motor support 5 is arranged in parallel to the horizontal plane or is arranged obliquely upwards from the motor support 5, so that the distance between the motor 6 and the ground is increased, and the probability of collision with the bumps on the ground in the operation process is reduced.

The middle part of crane span structure 1 is equipped with the installation arm 31 that the slope set up, is equipped with mount pad 32 in the top of installation arm 31, the top of mount pad 32 install the face 33 that has the level setting, installation arm 31 and mount pad 32 link to each other through the shock attenuation coupling assembling 34 that the slope set up, the slope direction of installation arm 31 opposite with the slope direction of shock attenuation coupling assembling 34. In the sliding process of the electric skateboard, the large wheel 4 or the small wheel 3 is subjected to a reaction force with vertical and horizontal components when meeting an obstacle, so that the electric skateboard has a bumping tendency, the reaction force applied to the large wheel 4 or the small wheel 3 is transmitted to the shock absorption connection assembly 34 through the bridge 1 and the mounting arm 31, as the tilting direction of the shock absorption connection assembly 34 is opposite to the tilting direction of the mounting arm 31, the acting force of the mounting arm 31 on the shock absorption connection assembly 34 is consistent with the tilting direction of the shock absorption connection assembly 34, the shock absorption connection assembly 34 is squeezed to effectively absorb the acting force applied by the mounting arm 31, the acting forces with vertical and horizontal components are weakened to be transmitted to the mounting seat to resist the acting force applied by a user to the skateboard pedal, and the vibration quantity of the skateboard pedal in the vertical and horizontal directions is weakened.

Preferably, installation face 33 below is equipped with and is located the holding hole 35 that just the slope set up on mount pad 32, the upper end of installation arm 31 be located holding hole 35, holding hole 35 restriction installation arm 31 home range, the extreme position of restriction shock attenuation in-process installation arm 31 prevents that shock attenuation coupling assembling 34 from receiving huge external force extrusion and damaging, extension shock attenuation coupling assembling 34 life. The upper end of installation arm 31 be the columnar body, the upper end of installation arm 31 and the hole bottom of holding hole 35 between leave the clearance, the side of installation arm 31 and the pore wall of holding hole 35 between leave the clearance, there is the clearance between holding hole 35 and the installation arm 31, has the activity space when guaranteeing that mount pad 32 receives vibrations, realizes effectively moving away to avoid possible earthquakes. The upper end of the mounting arm 31 has a smooth surface, and the bottom of the accommodating hole 35 has a smooth surface, so that stress concentration is avoided, and strength is improved. The lower part of the upper end of the mounting arm 31 is flat and the width thereof gradually increases from the upper end to the lower end; the connection strength between the installation arm 31 and the bridge frame 1 is improved, deformation of the installation arm 31 due to connection between the installation arm and the bridge frame 1 under the action of external force is avoided, the distance between the ground and a sliding plate pedal influences the overall structure of the electric sliding plate, and particularly the distance between the sliding plate pedal and the ground is avoided.

Preferably, the shock-absorbing connecting assembly 34 includes a first clip 36, a second clip 37 and a connecting bolt 38, the first clip 36 is located on one side of the mounting arm 31 and located between the mounting seat 32 and the mounting arm 31, the second clip 37 is located on the other side of the mounting arm 31, the connecting bolt 38 is inserted between the mounting seat 32, the first clip 36, the mounting arm 31 and the second clip 37, and the connecting bolt 38 fastens the mounting seat 32, the first clip 36, the mounting arm 31 and the second clip 37 through a fastening structure. The first clamping body 36 and the second frame body 37 clamp the mounting arm 31, so that the mounting arm 31 is fixedly connected with the mounting seat 32.

When the skateboard wheel meets an obstacle, the mounting arm 31 transmits the acting force borne by the large wheel 4 or the small wheel 3 to the first clamp body 36, the first clamp body 36 and the second clamp body 37 are pressed to deform and completely absorb or absorb part of the acting force borne by the large wheel 4 or the small wheel 3, the acting force borne by the large wheel 4 or the small wheel 3 is prevented from being transmitted to the mounting seat 32, the acting force is transmitted to the skateboard pedal through the mounting seat 32 and is resisted with the acting force exerted on the skateboard pedal by a user, and the ascending amount of the skateboard pedal is weakened or even eliminated. When the skateboard pedal meets a pit or passes through an obstacle, the skateboard wheels lose the support, the first clamp body 36 and the second clamp body 37 release the compression amount, the descending amount of the skateboard pedal is reduced, and the skateboard pedal is kept stable.

The connecting bolt 38 is a bolt, one end of the bolt is provided with a raised head 39, the other end of the bolt is in threaded connection with a nut 40, the raised head 39 and the nut 40 clamp the mounting seat 32, the first clamp body 36, the mounting arm 31 and the second clamp body 37, and the first clamp body 36 and the second clamp body 37 are made of damping materials. The position of the nut 40 is adjusted, so that the pre-clamping force of the first clamp body 36 and the second clamp body 37 is adjusted, the damping capacity of the damping connecting component 34 is adjusted, and the damping connecting component 34 is prevented from absorbing excessive energy to influence the sliding speed and the cruising capacity of the electric skateboard. In the present embodiment, the first clip body 36 and the second clip body 37 are integrally formed of rubber.

Furthermore, a first clamping support 41 is arranged at one end of the first clamping body 36 close to the mounting seat 32, a second clamping support 42 is arranged at one end of the second clamping body 37 far away from the mounting arm 31, the first clamping support 41 is provided with a first surrounding edge 29 surrounding the first clamping body 36, and the second clamping support 42 is provided with a second surrounding edge 29 surrounding the second clamping body 37. The first clamp holder 41 and the second clamp holder 42 provide a pressurizing surface for the first clamp body 36 and the second clamp body 37, and prevent the first clamp body 36 and the second clamp body 37 from being irregularly deformed under pressure, so that stress concentration is caused, and the service life is influenced. On the other hand, the positions of the first clip body 36 and the second clip body 37 are restricted so that the first clip body 36 and the second clip body 37 are always in the optimal shock-absorbing position.

Furthermore, the mounting seat 32 comprises a high portion 43 and a low portion 44, the high portion 43 and the low portion 44 are connected into a whole, the outer ends of the high portion 43 and the low portion 44 are arranged in a forked mode, and the joint of the high portion 43 and the low portion 44 is in arc transition, so that stress concentration is prevented, and the service life is prolonged. The accommodating hole 35 is formed in the upper portion 43, and the shock-absorbing connecting assembly 34 is inserted into the lower portion 44 to provide an installation position for the installation arm 31.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the bridge 1, the hub mounting part 2, the small wheel 3, the large wheel 4, the motor bracket 5, the motor 6, the driving wheel 7, the small wheel driving wheel 8, the large wheel driving wheel 9, the small annular transmission belt 10, the large annular transmission belt 11, the transmission column 12, the transmission hole 13, the outer hub 14, the inner hub 15, the positioning hole 16, the small gear ring 17, the large gear ring 18, the small wheel bearing 19, the large wheel bearing 20, the stop nut 21 and the through hole 22 are more used, the terms of extension 23, first annular step 24, second annular step 25, power bearing 26, recessed area 27, fastening screw 28, skirt 29, protective cover 30, mounting arm 31, mounting seat 32, mounting face 33, shock absorbing connection assembly 34, receiving hole 35, first clip body 36, second clip body 37, connecting bolt 38, nose 39, nut 40, first clip holder 41, second clip holder 42, high portion 43, low portion 44, etc., but do not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims (14)

1. A bridge frame assembly of an electric skateboard comprises a bridge frame (1), wheel hub installation parts (2) which are symmetrically arranged are respectively arranged at two sides of the bridge frame (1), it is characterized in that each hub mounting part (2) is detachably provided with a small wheel (3) or a big wheel (4) which can be replaced mutually, two motor brackets (5) which are symmetrically arranged are fixed on the bridge frame (1), one end of the motor bracket (5) is fixed on the bridge frame (1), the other end extends outwards in a cantilever type, a motor (6) is fixed at one end of the motor bracket (5) extending outwards, the motor (6) and the small wheel (3) which are positioned at the same side of the bridge frame (1) are connected through a transmission mechanism or the motor (6) and the large wheel (4) which are positioned at the same side of the bridge frame (1) are connected through a transmission mechanism, and when the small wheel (3) is arranged on the hub mounting part (2), the motor bracket (5) has enough ground clearance to avoid the motor (6) from being collided.

2. The bridge assembly of electric skateboard of claim 1, wherein the transmission mechanism comprises a driving wheel (7) disposed on a power shaft of the motor (6), a small wheel driving wheel (8) disposed on the small wheel (3), and a large wheel driving wheel (9) disposed on the large wheel (4), the small wheel (3) and the small wheel driving wheel (8) are detachably connected or integrally connected, the large wheel (4) and the large wheel driving wheel (9) are detachably connected or integrally connected, the driving wheel (7) and the small wheel driving wheel (8) on the same side of the bridge (1) are connected through a small annular transmission belt (10) or the driving wheel (7) and the large wheel driving wheel (9) on the same side of the bridge (1) are connected through a large annular transmission belt (11).

3. The bridge frame assembly of the electric skateboard of claim 2, wherein a plurality of transmission columns (12) distributed in the circumferential direction are arranged on the outer side of the small wheel transmission wheel (8), a plurality of transmission holes (13) distributed in the circumferential direction are arranged on the small wheel (3), the transmission columns (12) correspond to the transmission holes (13) one by one, and the transmission columns (12) are inserted into the transmission holes (13); big wheel (4) including outside wheel hub (14) and inboard wheel hub (15), outside wheel hub (14) and inboard wheel hub (15) on be equipped with respectively and correspond locating hole (16) that set up, thereby wear to be equipped with positioning bolt and link firmly outside wheel hub (14) and inboard wheel hub (15) in locating hole (16) that correspond the setting, inboard wheel hub (15) and bull wheel drive wheel (9) can dismantle and link firmly or even formula structure as an organic whole.

4. A bridge frame assembly of an electric skateboard according to claim 2, characterized in that the small wheel transmission wheel (8) is cylindrical and a small gear ring (17) is provided at the periphery of the small wheel transmission wheel (8), the large wheel transmission wheel (9) is cylindrical and a large gear ring (18) is provided at the periphery of the large wheel transmission wheel (9), the driving wheel (7) is a gear, and the small endless belt (10) and the large endless belt (11) are respectively an internal gear belt; the outer diameter of the small wheel driving wheel (8) is smaller than the inner diameter of the large wheel driving wheel (9).

5. Bridge assembly of a motorized pulley according to claim 2, characterized in that said small wheel drive wheel (8) is disengaged from the hub mounting portion (2) with the small wheel (3) or said small wheel drive wheel (8) remains on the hub mounting portion (2) when the small wheel (3) is disengaged from the hub mounting portion (2); when the bull wheel (4) is separated from the hub mounting part (2), the bull wheel driving wheel (9) is separated from the hub mounting part (2) along with the bull wheel (4) or the bull wheel driving wheel (9) is remained on the hub mounting part (2); at least one small wheel bearing (19) is arranged between the small wheel (3) and the hub mounting part (2), and the small wheel bearing (19) is fixed on the small wheel (3); at least one bull wheel bearing (20) is arranged between the bull wheel (4) and the hub mounting part (2), and the bull wheel bearing (20) is fixed on the bull wheel (4); the outer end of the hub mounting part (2) is provided with a stop nut (21).

6. The bridge frame assembly of the electric skateboard as in any one of claims 2-5, wherein the motor bracket (5) is of a long and flat structure, one end of the motor bracket (5) is provided with a through hole (22), and the through hole (22) is fixedly connected with the bridge frame (1) in a penetrating way; one side of the through hole (22) is provided with at least two extending parts (23) which axially extend along the hub mounting part (2), the extending parts (23) are tile-shaped, and the inner walls of the extending parts are attached to the outer surface of the bridge frame (1); the bridge frame (1) is provided with a first annular step (24), the through hole (22) is internally provided with a second annular step (25), and the first annular step (24) and the second annular step (25) are mutually inosculated.

7. The bridge assembly of electric skateboard as in claim 6, characterized in that the electric motor (6) is horizontally arranged, a power shaft of the electric motor (6) passes through from one side of the motor bracket (5) to the other side of the motor bracket (5), a power bearing (26) is arranged in front of the power shaft and the motor bracket (5), and the outer end of the power shaft is provided with the driving wheel (7).

8. The bridge assembly of the electric skateboard of claim 6, wherein the side of the motor bracket (5) where the motor (6) is mounted is provided with a recessed area (27), one end of the motor (6) is positioned in the recessed area (27), and the motor (6) is fixed on the motor bracket (5) through a plurality of fastening screws (28); the other side of the motor bracket (5) is provided with a surrounding edge (29) positioned at the periphery of the transmission mechanism; a protective cover (30) is fixed on the surrounding edge (29) so as to protect the transmission structure; the motor support (5) is arranged in parallel to the horizontal plane or is arranged obliquely upwards from the motor support (5).

9. A bridge assembly for a motorized skateboard according to any one of claims 1 to 5, wherein the bridge (1) is provided with an obliquely arranged mounting arm (31) in the middle, a mounting seat (32) is provided above the mounting arm (31), the top of the mounting seat (32) is provided with a horizontally arranged mounting surface (33), the mounting arm (31) and the mounting seat (32) are connected by an obliquely arranged shock-absorbing connecting assembly (34), and the inclination direction of the mounting arm (31) is opposite to that of the shock-absorbing connecting assembly (34).

10. The bridge assembly of the electric skateboard of claim 9, wherein the mounting surface (33) is provided with a receiving hole (35) which is obliquely arranged on the mounting base (32) below, and the upper end of the mounting arm (31) is positioned in the receiving hole (35); the upper end of the mounting arm (31) is a columnar body, a gap is reserved between the upper end of the mounting arm (31) and the bottom of the accommodating hole (35), and/or a gap is reserved between the side surface of the mounting arm (31) and the wall of the accommodating hole (35); the upper end of the mounting arm (31) has a smooth surface and/or the bottom of the receiving hole (35) has a smooth surface.

11. The bridge assembly of a motorized skateboard of claim 10, wherein the mounting arms (31) are flattened at a portion below the upper end thereof and have a width that gradually increases from the upper end to the lower end; shock attenuation coupling assembling (34) include first clamp (36), second clamp (37) and connect bolt (38), first clamp (36) be located installation arm (31) one side and be located between mount pad (32) and installation arm (31), second clamp (37) be located the opposite side of installation arm (31), connect bolt (38) wear to locate between mount pad (32), first clamp (36), installation arm (31) and second clamp (37), and connect bolt (38) through fastening structure with mount pad (32), first clamp (36), installation arm (31) and second clamp (37).

12. The bridge frame assembly of the electric skateboard of claim 11, wherein the connecting bolt (38) is a bolt, one end of the bolt is provided with a raised head (39), the other end of the bolt is in threaded connection with a nut (40), the raised head (39) and the nut (40) clamp the mounting seat (32), the first clamp body (36), the mounting arm (31) and the second clamp body (37), and the first clamp body (36) and the second clamp body (37) are made of shock-absorbing materials.

13. The bridge assembly of an electric skateboard of claim 12, wherein the first clamp body (36) has a first clamp holder (41) at an end thereof adjacent to the mounting seat (32), the second clamp body (37) has a second clamp holder (42) at an end thereof remote from the mounting arm (31), the first clamp holder (41) has a first peripheral edge (29) surrounding the first clamp body (36), and the second clamp holder (42) has a second peripheral edge (29) surrounding the second clamp body (37).

14. The bridge frame assembly of the electric skateboard as in claim 10, wherein the mounting seat (32) comprises a high portion (43) and a low portion (44), the high portion (43) and the low portion (44) are connected into a whole, the outer ends of the high portion (43) and the low portion (44) are arranged in a forked manner, the joint of the high portion (43) and the low portion (44) is in arc transition, the accommodating hole (35) is formed in the high portion (43), and the shock absorption connection assembly (34) penetrates through the low portion (44).

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