High-speed high-stability bridge assembly suitable for electric skateboard in racing competition

Abstract

The invention discloses a high-speed and high-stability bridge assembly suitable for an electric skateboard in a racing competition. The high-speed and high-stability bridge assembly comprises a movable bridge, a fixed support, a bearing seat and a transverse shaft, and a bridge rotating shaft of the movable bridge is installed in a support shaft hole of the fixed support through a shaft sleeve; the bearing seat is screwed and fastened on the fixed support, the fisheye bearing is embedded in a bearing mounting hole of the bearing seat, the center of the fisheye bearing is positioned on the axis of the bridge rotating shaft, the middle part of the transverse shaft is mounted on the bearing seat through the fisheye bearing, and the left end part and the right end part of the transverse shaft are screwed and fastened on the movable bridge respectively; a left side locknut is screwed on a left side external thread of the transverse shaft, and a left side buffer rubber column is clamped between the left side locknut and the bearing seat; and a right side buffer rubber column which sleeves the periphery of the transverse shaft is clamped between the right side locknut and the bearing seat. The electric skateboard has the advantages of being novel in structural design, good in stability and reliability and good in high-speed riding stability, and can be effectively suitable for the racing competition.

Description

Technical Field

[0001] The present invention relates to the technical field of electric skateboards, and in particular to a high-speed and high-stability bridge assembly suitable for electric skateboards in speed races. Background Art

[0002] The Chinese invention patent with the patent number ZL201920426538.7 and the patent name Bridge Installation Structure of Electric Skateboard specifically discloses the following technical solution: A bridge installation structure of an electric skateboard includes an installation arm in the middle of the bridge. An installation seat is provided above the installation arm, and the installation arm and the installation seat are connected by a shock-absorbing connection assembly; the installation seat is provided with an inclined accommodation hole, and the columnar body at the upper end of the installation arm is located in the accommodation hole, and there is a gap between the columnar body of the installation arm and the accommodation hole; the shock-absorbing connection assembly includes a first clamp body, a second clamp body, a bolt, and a nut. The first clamp body is located on one side of the installation arm and between the installation seat and the installation arm, the second clamp body is located on the other side of the installation arm, the bolt sequentially passes through the installation seat, the first clamp body, the installation arm, and the second clamp body, and the large-head end of the bolt and the nut clamp the installation seat, the first clamp body, the installation arm, and the second clamp body. The first clamp body and the second clamp body are made of shock-absorbing materials.

[0003] It should be noted that for the above-mentioned bridge installation structure of the electric skateboard, since there is a gap between the columnar body of the installation arm and the accommodation hole, specifically, there is a gap between the columnar body of the installation arm and the bottom of the accommodation hole, and / or there is a gap between the side surface of the columnar body of the installation arm and the hole wall of the accommodation hole. The upper end of the installation arm has a smooth surface, and / or the bottom of the accommodation hole has a smooth surface; for the above gap structure, it can ensure that the installation seat has a moving space when vibrating, and achieve effective shock absorption.

[0004] In addition, for the above-mentioned bridge installation structure of the electric skateboard, during use, the installation arm transmits the force received by the skate wheel to the first clamp body. The first clamp body and the second clamp body are compressed and deformed to completely absorb or absorb part of the force received by the skate wheel, preventing the force received by the skate wheel from being transmitted to the installation seat, and then being transmitted to the skateboard pedal through the installation seat, resisting the force applied by the user on the skateboard pedal, and weakening or even eliminating the rising amount of the skateboard pedal.

[0005] It should be noted that for the above-mentioned bridge installation structure of the electric skateboard, it still has the following defects, specifically: Defect 1: During the use of the above-mentioned bridge installation structure of the electric skateboard, when the user stands on the skateboard, the weight of the user will be transmitted to the first clamp body or the second clamp body, that is, the first clamp body or the second clamp body of the shock-absorbing connection assembly needs to bear the weight of the person, which will result in insufficient supporting force and compression stroke of the shock-absorbing connection assembly; Defect 2: During the use of the bridge installation structure of the above-mentioned electric skateboard, since there is a gap between the columnar body of the mounting arm and the accommodating hole, and the mounting arm of the bracket is elastically pressed between the first clamp body and the second clamp body, this structural design makes the bridge have no unique rotation axis and the movement has great uncertainty, which causes the bridge to be prone to shaking during movement, that is, it is not suitable for high-speed riding in a speed race. Summary of the Invention

[0006] The purpose of the present invention is to provide a high-speed and high-stability bridge assembly suitable for an electric skateboard in a speed race in view of the deficiencies of the prior art. The high-speed and high-stability bridge assembly suitable for an electric skateboard in a speed race has a novel structural design, good stability and reliability, good high-speed riding stability, and can be effectively applied to an electric skateboard for a speed race.

[0007] To achieve the above object, the present invention is realized through the following technical solutions.

[0008] A high-speed and high-stability bridge assembly suitable for an electric skateboard in a speed race includes a movable bridge and a fixed support firmly installed on the skateboard main body of the electric skateboard. Travel wheels are respectively installed at the left end and the right end of the movable bridge. A bridge rotating shaft protruding and extending towards one side is provided in the middle of the movable bridge. The fixed support is provided with a support shaft hole corresponding to the bridge rotating shaft, and the bridge rotating shaft of the movable bridge is inserted into the support shaft hole of the fixed support. The bridge rotating shaft of the movable bridge is installed in the support shaft hole of the fixed support through a bushing. A bearing seat is screwed and fixed to the fixed support. A spherical bearing is installed in the bearing installation hole of the bearing seat, and the center of the spherical bearing is located on the axis of the bridge rotating shaft. The high-speed and high-stability bridge assembly suitable for an electric skateboard in a speed race further includes a horizontal shaft arranged horizontally and transversely. The middle part of the horizontal shaft is installed on the bearing seat through a spherical bearing. The left end of the horizontal shaft extends to the left side of the bearing seat, and the right end of the horizontal shaft extends to the right side of the bearing seat. The left end and the right end of the horizontal shaft are respectively screwed and fixed to the movable bridge. The left end of the horizontal shaft is provided with a left external thread, and a left locknut is screwed on the left external thread of the horizontal shaft. A left buffer rubber column sleeved on the periphery of the horizontal shaft is clamped between the left locknut and the bearing seat. The right end of the horizontal shaft is provided with a right external thread, and a right locknut is screwed on the right external thread of the horizontal shaft. A right buffer rubber column sleeved on the periphery of the horizontal shaft is clamped between the right locknut and the bearing seat.

[0009] Wherein, a left spherical surface groove is opened on the end surface of the left buffer rubber column facing the spherical bearing, and a right spherical surface groove is opened on the end surface of the right buffer rubber column facing the spherical bearing.

[0010] Among them, a left washer is sleeved on the left end of the horizontal axis and is located between the left anti-loosening nut and the left buffer rubber column. The left washer is elastically clamped between the left anti-loosening nut and the left buffer rubber column; A right washer is sleeved on the right end of the horizontal axis and is located between the right anti-loosening nut and the right buffer rubber column. The right washer is elastically clamped between the right anti-loosening nut and the right buffer rubber column.

[0011] Among them, the bearing seat is provided with an internal threaded hole communicating with the bearing mounting hole. A locking screw is screwed in the internal threaded hole, and the locking screw abuts against the bearing outer sleeve of the spherical bearing.

[0012] Among them, an avoidance cavity is formed in the middle of the movable bridge on the opposite side of the bridge rotating shaft, and the bearing seat is located in the avoidance cavity.

[0013] Among them, the left buffer rubber column and the right buffer rubber column are respectively polyurethane columns.

[0014] Compared with the prior art, the present invention has the following beneficial effects. Specifically: 1. Since the center of the spherical bearing is located on the axis of the bridge rotating shaft, the movable bridge forms a unique rotating shaft jointly formed by the shaft sleeve and the spherical bearing; when the movable bridge moves relative to the fixed support, the entire movable bridge rotates around the above-mentioned unique rotating shaft, that is, the movement of the entire movable bridge is determined, which can effectively avoid the problem of shaking caused by gaps in the prior art, has better high-speed riding stability, and can meet the high-speed riding requirements in the electric skateboard racing competition; 2. When in use, the present invention bears the weight of people through the positions of the shaft sleeve and the spherical bearing, and the weight of the user will not be transmitted and act on the left buffer rubber column and the right buffer rubber column, so that the problems of insufficient supporting force and compression stroke of the shock-absorbing connection assembly in the prior art will not occur, and the stability and reliability are better; 3. Therefore, the high-speed and high-stability bridge assembly of the present invention applicable to electric skateboards for racing competitions 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 for racing competitions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with the aid of the drawings, but the embodiments in the drawings do not constitute any limitation to the present invention.

[0016] Figure 1 It is a structural schematic diagram of the present invention.

[0017] Figure 2 It is a structural schematic diagram of another perspective of the present invention.

[0018] Figure 3 is Figure 2 a schematic diagram of a local method

[0019] Figure 4 is a schematic structural diagram from another perspective of the present invention

[0020] Figure 5 is a schematic local sectional view of the present invention

[0021] Figure 6 is a schematic local sectional view at another position of the present invention

[0022] In Figures 1 to 6 it includes: 1 - movable bridge; 11 - bridge rotating shaft; 12 - avoidance cavity; 2 - skateboard main body; 3 - fixed support; 31 - support shaft hole; 4 - traveling wheel; 5 - bushing; 6 - bearing seat; 61 - bearing installation hole; 62 - internal thread hole; 63 - locking screw; 7 - spherical bearing; 71 - bearing ball; 72 - bearing outer sleeve; 8 - cross shaft; 81 - left external thread; 82 - right external thread; 911 - left locking nut; 912 - left buffer rubber column; 9121 - left spherical surface groove; 913 - left washer; 921 - right locking nut; 922 - right buffer rubber column; 9221 - right spherical surface groove; 923 - right washer Specific embodiments

[0023] The present invention will be described below in conjunction with specific embodiments

[0024] Embodiment 1, as Figures 1 to 6 shown, a high - speed and high - stability bridge assembly suitable for a racing electric skateboard includes a movable bridge 1 and a fixed support 3 fixedly installed on the skateboard main body 2 of the electric skateboard. Traveling wheels 4 are respectively installed at the left end and the right end of the movable bridge 1

[0025] Among them, as Figure 6 shown, a bridge rotating shaft 11 protruding and extending towards one side is provided in the middle of the movable bridge 1. The fixed support 3 is provided with a support shaft hole 31 corresponding to the bridge rotating shaft 11, and the bridge rotating shaft 11 of the movable bridge 1 is inserted into the support shaft hole 31 of the fixed support 3

[0026] Furthermore, as Figure 3 and Figure 6 shown, the bridge rotating shaft 11 of the movable bridge 1 is installed in the support shaft hole 31 of the fixed support 3 through a bushing 5

[0027] Even further, as Figures 1 to 6 shown, a bearing seat 6 is screwed and fixed to the fixed support 3. A spherical bearing 7 is embedded in the bearing installation hole 61 of the bearing seat 6, and the center of the spherical bearing 7 is located on the axis of the bridge rotating shaft 11

[0028] In addition, as shown in Figure 2 , Figure 3 , Figure 5 and Figure 6 , the high-speed and high-stability bridge assembly applicable to the electric skateboard for racing competitions further includes a horizontal transverse shaft 8 arranged horizontally. The middle part of the transverse shaft 8 is installed on the bearing seat 6 through a spherical bearing 7. The left end of the transverse shaft 8 extends to the left end side of the bearing seat 6, and the right end of the transverse shaft 8 extends to the right end side of the bearing seat 6. Moreover, the left end and the right end of the transverse shaft 8 are respectively screwed and fastened to the movable bridge 1.

[0029] Furthermore, as shown in Figures 3 to 5 , the left end of the transverse shaft 8 is provided with a left external thread 81, and a left locknut 911 is screwed on the left external thread 81 of the transverse shaft 8. A left buffer rubber column 912 sleeved on the periphery of the transverse shaft 8 is clamped between the left locknut 911 and the bearing seat 6; the right end of the transverse shaft 8 is provided with a right external thread 82, and a right locknut 921 is screwed on the right external thread 82 of the transverse shaft 8. A right buffer rubber column 922 sleeved on the periphery of the transverse shaft 8 is clamped between the right locknut 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 respectively polyurethane columns; of course, the above-mentioned polyurethane material does not constitute a limitation to the first embodiment, that is, the left buffer rubber column 912 and the right buffer rubber column 922 of the first embodiment can also be prepared from other plastic materials.

[0030] It should be emphasized that since the center of the spherical bearing 7 is located on the axis of the bridge rotating shaft 11, at this time, the movable bridge 1 of the first embodiment forms a unique rotating shaft formed by the shaft sleeve 5 and the spherical bearing 7 together; when the movable bridge 1 moves relative to the fixed support 3, the entire movable bridge 1 rotates around the above-mentioned unique rotating shaft, that is, the movement of the entire movable bridge 1 is determined, which can effectively avoid the problem of shaking caused by gaps in the prior art, and has better high-speed riding stability and can meet the high-speed riding requirements in the electric skateboard racing competition.

[0031] It should be pointed out that during the process of buffering and shock absorption of the left buffer rubber column 912 and the right buffer rubber column 922 in the first embodiment, when the traveling wheels 4 at the left end and the right end of the movable bridge 1 have bumpy movements, the left buffer rubber column 912 or the right buffer rubber column 922 will be compressed. Among them, during use, the user can adjust the pre-tightening force and tightness of the left buffer rubber column 912 by rotating and adjusting the position of the left locknut 911 with an open-end wrench, and adjust the pre-tightening force and tightness of the right buffer rubber column 922 by rotating and adjusting the position of the right locknut 921 with an open-end wrench, so as to realize the adjustment of the tightness of buffering and shock absorption.

[0032] It should be further emphasized that when the high-speed and high-stability bridge assembly for a speed race electric skateboard in the first embodiment is in use, when the user stands on the skateboard main body 2, in the first embodiment, the weight of the person is borne by the positions of the bushing 5 and the spherical eye bearing 7, and the weight of the user will not be transmitted and act on the left buffer rubber column 912 and the right buffer rubber column 922. In this way, the problems of insufficient supporting force and compression stroke of the shock-absorbing connection assembly in the prior art will not occur, and the stability and reliability are better.

[0033] From the above comprehensive situation, it can be seen that through the above structural design, the high-speed and high-stability bridge assembly for a speed race electric skateboard in the first embodiment has the advantages of novel structural design, good stability and reliability, and good high-speed riding stability, and can be effectively applied to the electric skateboard for speed races. Embodiment 2, as Figure 5 shown, the difference between the second embodiment and the first embodiment is that: the end face of the left buffer rubber column 912 facing the spherical eye bearing 7 is provided with a left spherical surface groove 9121, and the end face of the right buffer rubber column 922 facing the spherical eye bearing 7 is provided with a right spherical surface groove 9221; the bearing balls 71 of the spherical eye bearing 7 are respectively in spherical contact with the inner wall spherical surfaces of the left spherical surface groove 9121 and the right spherical surface groove 9221.

[0034] For the left spherical surface groove 9121 of the second embodiment, it can separate the left buffer rubber column 912 from the bearing balls 71 of the spherical eye bearing 7; for the right spherical surface groove 9221 of the second embodiment, it can separate the right buffer rubber column 922 from the bearing balls 71 of the spherical eye bearing 7. Therefore, the left spherical surface groove 9121 and the right spherical surface groove 9221 of the second embodiment can effectively prevent each buffer rubber column from contacting the bearing balls 71. Embodiment 3, as Figure 3 and Figure 5 shown, the difference between the third embodiment and the first embodiment is that: a left washer 913 is sleeved on the left end portion of the horizontal shaft 8 and is located between the left locknut 911 and the left buffer rubber column 912, and the left washer 913 is elastically clamped between the left locknut 911 and the left buffer rubber column 912.

[0035] Similarly, a right washer 923 is sleeved on the right end portion of the horizontal shaft 8 and is located between the right locknut 921 and the right buffer rubber column 922, and the right washer 923 is elastically clamped between the right locknut 921 and the right buffer rubber column 922.

[0036] It should be noted that the left washer 913 and the right washer 923 in this embodiment are metal parts respectively. The left washer 913 can facilitate the left locknut 911 to apply a pre-tightening force to the left buffer rubber column 912, and the right washer 923 can facilitate the right locknut 921 to apply a pre-tightening force to the right buffer rubber column 922. Embodiment 4, as Figure 5 and Figure 6 shown, the difference between Embodiment 4 and Embodiment 1 is that: the bearing housing 6 is provided with an internal threaded hole 62 communicating with the bearing mounting hole 61, and 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 spherical bearing 7.

[0037] Through the design of the locking screw 63, Embodiment 4 can enable the spherical bearing 7 to be stably and reliably positioned and installed in the bearing mounting hole 61 of the bearing housing 6. Embodiment 5, as Figure 3 、 Figure 5 and Figure 6 shown, the difference between Embodiment 5 and Embodiment 1 is that: a cavity 12 is provided in the middle of the movable bridge 1 on the opposite side of the bridge rotating shaft 11, and the bearing housing 6 is located in the cavity 12.

[0038] For the cavity 12 in Embodiment 5, it can effectively improve the compactness of the overall structure.

[0039] The above content is only the preferred embodiments of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. The content of this specification should not be construed as a limitation to the present invention.

Claims

1. A high-speed and high-stability bridge assembly applicable to electric skateboards for racing competitions, comprising a movable bridge (1) and a fixed support (3) fixedly installed on the skateboard body (2) of the electric skateboard. Travel wheels (4) are respectively installed at the left end and the right end of the movable bridge (1). A bridge shaft (11) protruding and extending towards one side is arranged in the middle of the movable bridge (1). The fixed support (3) is provided with a support shaft hole (31) corresponding to the bridge shaft (11). The bridge shaft (11) of the movable bridge (1) is inserted into the support shaft hole (31) of the fixed support (3). It is characterized in that: The bridge shaft (11) of the movable bridge (1) is installed in the support shaft hole (31) of the fixed support (3) through a bushing (5). A bearing seat (6) is screwed and fixed to the fixed support (3). A spherical bearing (7) is embedded in a bearing installation hole (61) of the bearing seat (6). The center of the spherical bearing (7) is located on the axis of the bridge shaft (11). The high-speed and high-stability bridge assembly applicable to electric skateboards for racing competitions further includes a horizontal shaft (8) arranged horizontally and transversely. The middle part of the horizontal shaft (8) is installed on the bearing seat (6) through the spherical bearing (7). The left end of the horizontal shaft (8) extends to the left side of the bearing seat (6), and the right end of the horizontal shaft (8) extends to the right side of the bearing seat (6). The left end and the right end of the horizontal shaft (8) are respectively screwed and fixed to the movable bridge (1). The left end of the horizontal shaft (8) is provided with a left external thread (81), and a left locknut (911) is screwed on the left external thread (81) of the horizontal shaft (8). A left buffer rubber column (912) sleeved on the periphery of the horizontal shaft (8) is clamped between the left locknut (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 locknut (921) is screwed on the right external thread (82) of the horizontal shaft (8). A right buffer rubber column (922) sleeved on the periphery of the horizontal shaft (8) is clamped between the right locknut (921) and the bearing seat (6).

2. The high-speed and high-stability bridge assembly for an electric skateboard applicable to speed races according to claim 1, wherein: A left spherical surface groove (9121) is formed on the end surface of the left buffer rubber column (912) facing the spherical bearing (7), and a right spherical surface groove (9221) is formed on the end surface of the right buffer rubber column (922) facing the spherical bearing (7).

3. The high-speed and high-stability bridge assembly for an electric skateboard applicable to speed races according to claim 1, wherein: A left washer (913) is sleeved on the left end of the horizontal shaft (8) between the left locknut (911) and the left buffer rubber column (912). The left washer (913) is elastically clamped between the left locknut (911) and the left buffer rubber column (912). A right washer (923) is sleeved on the right end of the horizontal shaft (8) between the right locknut (921) and the right buffer rubber column (922). The right washer (923) is elastically clamped between the right locknut (921) and the right buffer rubber column (922).

4. The high-speed and high-stability bridge assembly for an electric skateboard applicable to speed races according to claim 1, wherein: The bearing housing (6) is provided with an internal threaded hole (62) communicating with the bearing mounting hole (61), and 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 spherical bearing (7).

5. The high-speed and high-stability bridge assembly for an electric skateboard applicable to speed races according to claim 1, characterized in that: A cavity avoidance chamber (12) is formed in the middle of the movable bridge (1) on the opposite side of the bridge rotating shaft (11), and the bearing housing (6) is located in the cavity avoidance chamber (12).

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

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