A high-speed and high-stability bridge assembly suitable for a racing electric skateboard

Abstract

The utility model discloses a high-speed high-stability bridge assembly suitable for electric skateboard for racing, which comprises a movable bridge, a fixed support, a bearing seat, a cross shaft, the bridge shaft of the movable bridge is installed in the support shaft hole of the fixed support through a shaft sleeve, the bearing seat is screwed and fastened to the fixed support, a fish eye bearing is embedded in the bearing mounting hole of the bearing seat, the center of the fish eye bearing is located on the axis of the bridge shaft, the middle part of the cross shaft is installed in the bearing seat through the fish eye bearing, the left and right ends of the cross shaft are screwed and fastened to the movable bridge respectively, the left side of the cross shaft is screwed and fastened with the left side lock nut, the left side lock nut and the bearing seat are clamped with the left side buffer rubber column, the right side of the cross shaft is screwed and fastened with the right side lock nut, the right side lock nut and the bearing seat are clamped with the right side buffer rubber column sleeved on the periphery of the cross shaft. The utility model has the advantages of novel structure design, good stability and reliability, good high-speed riding stability, and can be effectively applied to the electric skateboard for racing.

Description

Technical Field

[0001] This utility model relates to the field of electric skateboard technology, and in particular to a high-speed, high-stability bridge assembly suitable for racing electric skateboards. Background Technology

[0002] Chinese utility model patent with patent number ZL201920426538.7 and patent name: Bridge mounting structure for electric skateboard, specifically discloses the following technical solution: A bridge mounting structure for electric skateboard, including a mounting arm located in the middle of the bridge, a mounting seat provided above the mounting arm, and the mounting arm and the mounting seat connected by a shock-absorbing connecting assembly; the mounting seat has an inclined receiving hole, the columnar body at the upper end of the mounting arm is located in the receiving hole, and a gap is left between the columnar body of the mounting arm and the receiving hole; the shock-absorbing connecting assembly includes a first clamp, a second clamp, a bolt, and a nut, the first clamp is located on one side of the mounting arm and between the mounting seat and the mounting arm, the second clamp is located on the other side of the mounting arm, the bolt passes through the mounting seat, the first clamp, the mounting arm, and the second clamp in sequence, and the large end of the bolt and the nut clamp the mounting seat, the first clamp, the mounting arm, and the second clamp, and the first clamp and the second clamp are made of shock-absorbing material.

[0003] It should be noted that, for the aforementioned electric skateboard bridge mounting structure, since there is a gap between the columnar body of the mounting arm and the receiving hole, specifically, a gap is left between the columnar body of the mounting arm and the bottom of the receiving hole, and / or a gap is left between the side of the columnar body of the mounting arm and the wall of the receiving hole, the upper end of the mounting arm has a smooth surface, and / or the bottom of the receiving hole has a smooth surface; for the above-mentioned gap structure, it can ensure that the mounting seat has room to move when it is vibrated, thereby achieving effective shock absorption.

[0004] Furthermore, regarding the aforementioned bridge mounting structure of the electric skateboard, during use, the mounting arm transmits the force on the skateboard wheel to the first clamp. The first and second clamps, under pressure and deformation, completely or partially absorb the force on the skateboard wheel, preventing the force on the skateboard wheel from being transmitted to the mounting seat. The force is then transmitted to the skateboard pedal through the mounting seat, resisting the force applied by the user to the skateboard pedal and reducing or even eliminating the upward movement of the skateboard pedal.

[0005] It should be noted that the aforementioned electric skateboard bridge mounting structure still has the following defects, specifically:

[0006] Defect 1: During the use of the bridge installation structure of the electric skateboard, when the user stands on the skateboard, the user's weight will be transmitted to the first clamp or the second clamp. That is, the first clamp or the second clamp of the shock-absorbing connection component needs to bear the weight of the person, which will result in insufficient support force and compression stroke of the shock-absorbing connection component.

[0007] Defect 2: During the use of the above-mentioned electric skateboard bridge mounting structure, due to the gap between the columnar body of the mounting arm and the receiving hole, and the elastic pressing of the mounting arm of the bracket between the first clamp and the second clamp, this structural design makes the bridge frame without a unique axis of rotation and the movement has a large degree of uncertainty. This causes the bridge frame to sway easily during movement, which is not suitable for high-speed riding in racing competitions. Utility Model Content

[0008] The purpose of this utility model is to provide a high-speed, high-stability bridge assembly suitable for racing electric skateboards, which addresses the shortcomings of existing technologies. This high-speed, high-stability bridge assembly has a novel structural design, good stability and reliability, good high-speed riding stability, and can be effectively applied to racing electric skateboards.

[0009] To achieve the above objectives, this utility model is implemented through the following technical solution.

[0010] A high-speed, high-stability bridge assembly for electric skateboards used in racing competitions includes a movable bridge, a fixed support that is fastened to the skateboard body of the electric skateboard, and wheels that are mounted on the left and right ends of the movable bridge.

[0011] The movable cable tray has a cable tray pivot that protrudes to one side in the middle. The fixed support has a support shaft hole corresponding to the cable tray pivot. The cable tray pivot of the movable cable tray is inserted into the support shaft hole of the fixed support.

[0012] The rotating shaft of the movable cable tray is installed in the support shaft hole of the fixed support through a bushing;

[0013] The fixed support screws are tightened into the inherent bearing housing, and the bearing mounting hole of the bearing housing is fitted with a fisheye bearing, the center of which is located on the axis of the cable tray shaft.

[0014] The high-speed, high-stability bridge assembly for electric skateboards used in racing competitions also includes a horizontally arranged transverse shaft. The middle part of the transverse shaft is mounted on a bearing seat via a fisheye bearing. The left end of the transverse shaft extends to the left side of the bearing seat, and the right end of the transverse shaft extends to the right side of the bearing seat. The left and right ends of the transverse shaft are screwed and fastened to the movable bridge frame.

[0015] The left end of the horizontal shaft is provided with a left external thread, and a left anti-loosening nut is screwed into the left external thread of the horizontal shaft. A left buffer rubber column fitted around the outside of the horizontal shaft is locked between the left anti-loosening nut and the bearing housing. The right end of the horizontal shaft is provided with a right external thread, and a right anti-loosening nut is screwed into the right external thread of the horizontal shaft. A right buffer rubber column fitted around the outside of the horizontal shaft is locked between the right anti-loosening nut and the bearing housing.

[0016] The left buffer rubber column has a left spherical groove on the end face facing the fisheye bearing, and the right buffer rubber column has a right spherical groove on the end face facing the fisheye bearing.

[0017] The left end of the horizontal shaft is fitted with a left washer located between the left anti-loosening nut and the left buffer rubber post, and the left washer is elastically locked between the left anti-loosening nut and the left buffer rubber post.

[0018] The right end of the horizontal shaft is fitted with a right washer located between the right anti-loosening nut and the right buffer rubber post. The right washer is elastically locked between the right anti-loosening nut and the right buffer rubber post.

[0019] The bearing housing has an internally threaded hole that communicates with the bearing mounting hole. A locking screw is threaded into the internally threaded hole and abuts against the outer sleeve of the fisheye bearing.

[0020] The movable cable tray has a cavity on the opposite side of the cable tray pivot in the middle, and the bearing seat is located in the cavity.

[0021] The left and right buffer columns are polyurethane columns.

[0022] Compared with the prior art, the present invention has the following beneficial effects, specifically:

[0023] 1. Since the center of the fisheye bearing is located on the axis of the bridge frame's rotating shaft, the movable bridge frame forms a unique rotating axis through the bushing and the fisheye bearing. When the movable bridge frame moves relative to the fixed support, the entire movable bridge frame rotates around the aforementioned unique rotating axis. That is, the movement of the entire movable bridge frame is definite. This can effectively avoid the problem of swaying caused by gaps in the existing technology, resulting in better high-speed riding stability and meeting the high-speed riding requirements in electric skateboard racing competitions.

[0024] 2. In use, this utility model supports the weight of the user through the bushing position and the fisheye bearing position. The user's weight will not be transmitted and act on the left and right buffer rubber columns. This avoids the problem of insufficient support force and compression stroke of the shock-absorbing connection components in the prior art, and the stability and reliability are better.

[0025] 3. Therefore, the high-speed and high-stability bridge assembly of this utility model for electric skateboards used in racing has the advantages of novel structural design, good stability and reliability, and good high-speed riding stability, and can be effectively applied to electric skateboards used in racing. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention.

[0027] Figure 1 This is a schematic diagram of the structure of this utility model.

[0028] Figure 2 This is a structural schematic diagram from another perspective of the present invention.

[0029] Figure 3 for Figure 2 A schematic diagram of a local method.

[0030] Figure 4 This is a structural schematic diagram from another perspective of the present invention.

[0031] Figure 5 This is a partial cross-sectional schematic diagram of the present invention.

[0032] Figure 6 This is a partial cross-sectional view of another location of the present invention.

[0033] exist Figures 1 to 6 This includes:

[0034] 1-Modible cable tray; 11-Cable tray pivot; 12-Clear cavity; 2-Skateboard body; 3-Fixed support; 31-Support shaft hole; 4-Walking wheel; 5-Busset; 6-Bearing seat; 61-Bearing mounting hole; 62-Internal threaded hole; 63-Locking screw; 7-Fisheye bearing; 71-Bearing ball bearing; 72-Bearing outer sleeve; 8-Horizontal shaft; 81-Left external thread; 82-Right external thread; 911-Left anti-loosening nut; 912-Left buffer rubber column; 9121-Left spherical groove; 913-Left washer; 921-Right anti-loosening nut; 922-Right buffer rubber column; 9221-Right spherical groove; 923-Right washer. Detailed Implementation

[0035] The present invention will now be described in conjunction with specific embodiments.

[0036] Example 1, as Figures 1 to 6 As shown, a high-speed, high-stability bridge assembly suitable for electric skateboards used in racing competitions includes a movable bridge 1, a fixed support 3 that is fastened to the skateboard body 2 of the electric skateboard, and a traveling wheel 4 installed at the left and right ends of the movable bridge 1, respectively.

[0037] Among them, such as Figure 6 As shown, the movable cable tray 1 has a cable tray pivot 11 extending to one side in the middle, and the fixed support 3 has a support shaft hole 31 corresponding to the cable tray pivot 11. The cable tray pivot 11 of the movable cable tray 1 is inserted into the support shaft hole 31 of the fixed support 3.

[0038] Furthermore, such as Figure 3 and Figure 6 As shown, the cable tray shaft 11 of the movable cable tray 1 is installed in the support shaft hole 31 of the fixed support 3 through the bushing 5.

[0039] Furthermore, such as Figures 1 to 6 As shown, the fixed support 3 is screwed onto the inherent bearing housing 6. The bearing mounting hole 61 of the bearing housing 6 is fitted with a fisheye bearing 7, and the center of the fisheye bearing 7 is located on the axis of the bridge frame shaft 11.

[0040] In addition, such as Figure 2 , Figure 3 , Figure 5 as well as Figure 6 As shown, the high-speed, high-stability bridge assembly for electric skateboards used in racing competitions also includes a horizontally arranged transverse shaft 8. The middle part of the transverse shaft 8 is mounted on the bearing seat 6 via a fisheye bearing 7. The left end of the transverse shaft 8 extends to the left end of the bearing seat 6, and the right end of the transverse shaft 8 extends to the right end of the bearing seat 6. The left and right ends of the transverse shaft 8 are respectively screwed and fastened to the movable bridge 1.

[0041] And also, such as Figures 3 to 5 As shown, the left end of the horizontal shaft 8 is provided with a left external thread 81, and a left anti-loosening nut 911 is screwed onto the left external thread 81 of the horizontal shaft 8. A left buffer rubber column 912 fitted around the outer periphery of the horizontal shaft 8 is engaged between the left anti-loosening nut 911 and the bearing seat 6. The right end of the horizontal shaft 8 is provided with a right external thread 82, and a right anti-loosening nut 921 is screwed onto the right external thread 82 of the horizontal shaft 8. A right buffer rubber column 922 fitted around the outer periphery of the horizontal shaft 8 is engaged between the right anti-loosening nut 921 and the bearing seat 6. It should be explained that the left buffer rubber column 912 and the right buffer rubber column 922 are polyurethane columns. Of course, the above-mentioned polyurethane material does not constitute a limitation on this embodiment, that is, the left buffer rubber column 912 and the right buffer rubber column 922 in this embodiment can also be made of other plastic materials.

[0042] It should be emphasized that, since the center of the fisheye bearing 7 is located on the axis of the bridge frame shaft 11, the movable bridge frame 1 of this embodiment forms a unique rotation axis formed by the bushing 5 and the fisheye bearing 7. When the movable bridge frame 1 moves relative to the fixed support 3, the entire movable bridge frame 1 rotates around the aforementioned unique rotation axis. That is, the movement of the entire movable bridge frame 1 is definite. This can effectively avoid the problem of swaying caused by gaps in the prior art, resulting in better high-speed riding stability and meeting the high-speed riding requirements in electric skateboard racing competitions.

[0043] It should be noted that during the buffering and shock absorption process of the left buffer rubber column 912 and the right buffer rubber column 922 in this embodiment, when the traveling wheels 4 at the left and right ends of the movable bridge frame 1 experience bumpy movement, the left buffer rubber column 912 or the right buffer rubber column 922 will be compressed. In use, the user can adjust the preload and tightness of the left buffer rubber column 912 by rotating the left anti-loosening nut 911 with an open-end wrench, and adjust the preload and tightness of the right buffer rubber column 922 by rotating the right anti-loosening nut 921 with an open-end wrench, thereby achieving adjustment of the buffering and shock absorption tightness.

[0044] It should be further emphasized that when the high-speed, high-stability bridge assembly for racing electric skateboards in this embodiment 1 is used, when the user stands on the skateboard body 2, this embodiment 1 supports the user's weight through the bushing 5 and the fisheye bearing 7. The user's weight will not be transmitted and acted on the left buffer rubber column 912 and the right buffer rubber column 922. This avoids the problem of insufficient support force and compression stroke of the shock-absorbing connection assembly in the prior art, resulting in better stability and reliability.

[0045] In summary, the high-speed, high-stability bridge assembly for racing electric skateboards in this embodiment has the advantages of novel structural design, good stability and reliability, and good high-speed riding stability, and can be effectively applied to racing electric skateboards.

[0046] Example 2, as Figure 5 As shown, the difference between this embodiment 2 and embodiment 1 is that: the end face of the left buffer rubber column 912 facing the fisheye bearing 7 is provided with a left spherical groove 9121, and the end face of the right buffer rubber column 922 facing the fisheye bearing 7 is provided with a right spherical groove 9221; the bearing balls 71 of the fisheye bearing 7 are in contact with the inner spherical surfaces of the left spherical groove 9121 and the right spherical groove 9221 respectively.

[0047] Regarding the left spherical groove 9121 in this embodiment two, it enables the left buffer rubber column 912 to be spaced apart from the bearing balls 71 of the fisheye bearing 7; regarding the right spherical groove 9221 in this embodiment two, it enables the right buffer rubber column 922 to be spaced apart from the bearing balls 71 of the fisheye bearing 7. Therefore, the left spherical groove 9121 and the right spherical groove 9221 in this embodiment two can effectively prevent the buffer rubber columns from contacting the bearing balls 71.

[0048] Example 3, as Figure 3 and Figure 5As shown, the difference between this embodiment 3 and embodiment 1 is that: the left end of the horizontal shaft 8 is fitted with a left washer 913 located between the left anti-loosening nut 911 and the left buffer rubber post 912, and the left washer 913 is elastically locked between the left anti-loosening nut 911 and the left buffer rubber post 912.

[0049] Similarly, the right end of the horizontal axis 8 is fitted with a right washer 923 located between the right anti-loosening nut 921 and the right buffer rubber post 922. The right washer 923 is elastically locked between the right anti-loosening nut 921 and the right buffer rubber post 922.

[0050] It should be explained that the left washer 913 and the right washer 923 in this embodiment are metal parts. The left washer 913 can facilitate the left anti-loosening nut 911 to apply pre-tightening force to the left buffer rubber column 912, and the right washer 923 can facilitate the right anti-loosening nut 921 to apply pre-tightening force to the right buffer rubber column 922.

[0051] Example 4, as Figure 5 and Figure 6 As shown, the difference between this embodiment four and embodiment one is that the bearing housing 6 has an internal threaded hole 62 that communicates with the bearing mounting hole 61, and a locking screw 63 is screwed into the internal threaded hole 62. The locking screw 63 abuts against the bearing outer sleeve 72 of the fisheye bearing 7.

[0052] With the locking screw 63 design, this embodiment four enables the fisheye bearing 7 to be stably and reliably positioned and installed in the bearing mounting hole 61 of the bearing housing 6.

[0053] Example 5, such as Figure 3 , Figure 5 as well as Figure 6 As shown, the difference between this fifth embodiment and the first embodiment is that: a cavity 12 is provided in the middle of the movable cable tray 1 on the opposite side of the cable tray pivot 11, and the bearing seat 6 is located in the cavity 12.

[0054] For the cavity 12 in this embodiment five, it can effectively improve the compactness of the overall structure.

[0055] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A high-speed, high-stability bridge frame assembly suitable for electric skateboards used in racing competitions, comprising a movable bridge frame (1) and a fixed support (3) fastened to the skateboard body (2) of the electric skateboard, wherein the left and right ends of the movable bridge frame (1) are respectively equipped with a walking wheel (4). The movable cable tray (1) has a cable tray pivot (11) that protrudes to one side in the middle. The fixed support (3) has a support shaft hole (31) corresponding to the cable tray pivot (11). The cable tray pivot (11) of the movable cable tray (1) is inserted into the support shaft hole (31) of the fixed support (3). Its features are: The cable tray shaft (11) of the movable cable tray (1) is installed in the support shaft hole (31) of the fixed support (3) through the bushing (5); The fixed support (3) is screwed onto the inherent bearing housing (6). The bearing mounting hole (61) of the bearing housing (6) is fitted with a fisheye bearing (7). The center of the fisheye bearing (7) is located on the axis of the bridge frame shaft (11). The high-speed, high-stability bridge assembly for electric skateboards used in racing competitions also includes a horizontally arranged transverse shaft (8). The middle part of the transverse shaft (8) is mounted on the bearing seat (6) via a fisheye bearing (7). The left end of the transverse shaft (8) extends to the left side of the bearing seat (6), and the right end of the transverse shaft (8) extends to the right side of the bearing seat (6). The left and right ends of the transverse shaft (8) are screwed and fastened to the movable bridge frame (1). The left end of the horizontal shaft (8) is provided with a left external thread (81), and the left external thread (81) of the horizontal shaft (8) is screwed with a left anti-loosening nut (911). The left anti-loosening nut (911) and the bearing seat (6) are fitted with a left buffer rubber column (912) that is sleeved around the horizontal shaft (8); the right end of the horizontal shaft (8) is provided with a right external thread (82), and the right external thread (82) of the horizontal shaft (8) is screwed with a right anti-loosening nut (921). The right anti-loosening nut (921) and the bearing seat (6) are fitted with a right buffer rubber column (922) that is sleeved around the horizontal shaft (8).

2. The high-speed, high-stability bridge assembly for electric racing skateboards according to claim 1, characterized in that: The left buffer rubber column (912) has a left spherical groove (9121) on the end face facing the fisheye bearing (7), and the right buffer rubber column (922) has a right spherical groove (9221) on the end face facing the fisheye bearing (7).

3. The high-speed, high-stability bridge assembly for electric racing skateboards according to claim 1, characterized in that: The left end of the horizontal shaft (8) is fitted with a left washer (913) located between the left anti-loosening nut (911) and the left buffer rubber post (912). The left washer (913) is elastically locked between the left anti-loosening nut (911) and the left buffer rubber post (912). The right end of the horizontal shaft (8) is fitted with a right washer (923) located between the right anti-loosening nut (921) and the right buffer rubber column (922). The right washer (923) is elastically locked between the right anti-loosening nut (921) and the right buffer rubber column (922).

4. A high-speed, high-stability bridge assembly for electric racing skateboards according to claim 1, characterized in that: The bearing housing (6) has an internal threaded hole (62) that communicates with the bearing mounting hole (61). A locking screw (63) is screwed into the internal threaded hole (62), and the locking screw (63) abuts against the bearing outer sleeve (72) of the fisheye bearing (7).

5. A high-speed, high-stability bridge assembly for electric racing skateboards according to claim 1, characterized in that: A cavity (12) is provided in the middle of the movable bridge (1) on the opposite side of the bridge shaft (11), and the bearing seat (6) is located in the cavity (12).

6. A high-speed, high-stability bridge assembly for electric racing skateboards according to claim 1, characterized in that: The left buffer column (912) and the right buffer column (922) are polyurethane columns.

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