Electric skateboard

Abstract

The utility model provides an electric skateboard which comprises a board surface and a bridge frame, the bridge frame comprises a torque piece and two groups of eccentric pieces, the torque piece is connected with the board surface, two ends of the torque piece are respectively connected with skateboard wheels through the eccentric pieces, a torque sensor is arranged in the torque piece, and when the board surface applies pressure to the torque piece, the torque sensor is connected with the skateboard wheels through the eccentric pieces. The torque sensor obtains a torque value; compared with the traditional sheet control, the structure arrangement enables the operation sensitivity to be high, the identification precision to be high, the anti-interference capability to be strong, and the service life to be long.

Description

Technical Field

[0001] The utility model relates to the technical field of skateboards, and more specifically to an electric skateboard. Background Art

[0002] With the popularization of skateboarding, electric skateboards have gradually become popular among users. An electric skateboard is a means of transportation formed by adding an electric drive device to a traditional human-powered skateboard.

[0003] Currently, existing electric-assisted skateboards include a handheld handle wireless type and a pressure sensor somatosensory control type. Taking the pressure sensor somatosensory control type as an example, the existing skateboards of this structure mainly have defects such as low sensitivity and poor lifespan. For example, the invention patent with the patent number 2022104223840 discloses a control method of an electric skateboard, its control device, and the electric skateboard. It specifically discloses that a strain sensor is arranged between the bridge and the board surface, and the driving of the skateboard is controlled by the pressure value obtained by the strain sensor. However, this strain sensor is similar to the sensor of an electronic scale, and the pressure is obtained by the deformation of the strain gauge. Moreover, this structure is affected by the left-right tilt of the board surface, and the accuracy of the sensor is poor and the lifespan is short, which cannot meet the application requirements of the electric-assisted skateboard. Summary of the Utility Model

[0004] Aiming at the deficiencies existing in the prior art, the purpose of the utility model is to provide an electric skateboard to overcome the above-mentioned defects in the prior art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] An electric skateboard includes a board surface and a bridge. The bridge includes a torque member and two sets of eccentric members. The torque member is connected to the board surface, and both ends of the torque member are respectively connected to skateboard wheels through eccentric members. A torque sensor is included in the torque member. When the board surface applies pressure to the torque member, the torque sensor obtains a torque value.

[0007] Further, the torque member includes a torque shaft, a deformation sleeve, and a shaft sleeve. Both ends of the torque shaft are respectively connected to skateboard wheels through eccentric members. The deformation sleeve is located outside the torque shaft. The torque sensor is sleeved on the deformation sleeve. The shaft sleeve is located outside the deformation sleeve. The outer surface of the shaft sleeve is connected to the board surface. When the board surface applies pressure to the shaft sleeve, the deformation sleeve twists relative to both ends under the action of the torque shaft and the shaft sleeve.

[0008] Further, one end of the deformation sleeve is connected to the torque shaft through a spline, and the other end of the deformation sleeve is connected to the shaft sleeve through a spline.

[0009] Further, a protruding portion is provided on the outer surface of the bushing, and the protruding portion is connected to the plate surface.

[0010] Further, one end of the protruding portion is inclined upward toward the bushing.

[0011] Further, a driving member is further provided on the bridge at any end of the plate surface, and the driving member is used to drive the skate wheel to rotate.

[0012] Further, the driving member includes a pulley group or a mid-mounted motor assembly.

[0013] The beneficial effects of the present utility model: The bridge is split into a torque member and two sets of eccentric members. The torque member is connected to the skate wheel through the eccentric members. The plate surface directly acts on the torque member. The pressure applied downward by the plate surface causes the deformation sleeve in the torque member to twist, generating torsion on the torque sensor on the deformation sleeve, so as to control the power control. Compared with the traditional strain gauge control, the setting of this kind of bridge makes the recognition accuracy high. The torque sensor therein is an alloy sheet bonded to the deformation sleeve, and the amount of torsional deformation is relatively small, and it is only stressed in the torque direction, and there is no influence in other forms, and the service life is long. Description of the Drawings

[0014] Figure 1 is the overall structure diagram of the present utility model;

[0015] Figure 2 is the cross-sectional view at the wheel shaft of the present utility model;

[0016] Reference numerals: 1, plate surface; 2, bridge; 21, torque member; 211, torque sensor; 212, torque shaft; 213, deformation sleeve; 214, bushing; 22, eccentric member; 3, skate wheel; 4, protruding portion; 5, driving member. Detailed Embodiments

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0018] It should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this utility model belongs. The terms used herein in the description of the present utility model are for the purpose of describing specific embodiments only and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0020] The following further details the embodiments of the present utility model with reference to the accompanying drawings:

[0021] Since a strain sensor is currently provided between the bridge 2 and the board surface 1 of the electric assist skateboard, and the driving of the skateboard is controlled by the pressure value obtained by the strain sensor. However, this kind of strain sensor is similar to the sensor of an electronic scale, and the pressure is obtained by the deformation of the strain gauge. Moreover, this kind of structure is affected by the left-right inclination of the board surface 1, and the accuracy of the sensor is poor and the service life is short, which cannot meet the application requirements of the electric assist skateboard. Therefore, the present utility model designs such a skateboard, as Figure 1 shown, which includes a board surface 1 and a bridge 2. The bridge 2 includes a torque member 21 and two sets of eccentric members 22. The torque member 21 is connected to the board surface 1, and both ends of the torque member 21 are respectively connected to the skateboard wheels 3 through the eccentric members 22. A torque sensor 211 is included in the torque member 21. When the board surface 1 applies pressure to the torque member 21, the torque sensor 211 obtains a torque value. When the user tilts forward or backward, the pressure applied by the board surface 1 to the torque member 21 is different, and then the torque value obtained by the torque sensor 211 inside the torque member 21 changes. The change in the torque value is used as the basis for power control of the controller. Compared with the traditional strain gauge control, this kind of structure setting makes the operation sensitivity high and the recognition accuracy high.

[0022] Specifically, as Figure 2As shown, the torque member 21 includes a torque shaft 212, a deformation sleeve 213, and a bushing 214. Both ends of the torque shaft 212 are respectively connected to the skate wheels 3 through eccentric members 22. Among them, the torque shaft 212 and the eccentric members 22 are fixedly connected. The deformation sleeve 213 is sleeved outside the torque shaft 212, and the torque sensor 211 is sleeved on the deformation sleeve 213. The torque sensor 211 in the present utility model is an alloy sheet, and the alloy sheet is bonded to the outer surface of the deformation sleeve 213. The bushing 214 is sleeved outside the deformation sleeve 213, and the outer surface of the bushing 214 is connected to the board surface 1. When the board surface 1 applies pressure to the bushing 214, under the action of the eccentric member 22, the center of the eccentric member 22 will shift, that is, the torque shaft 212 will have a tendency to rotate. Since the bushing 214 is fixed, the deformation sleeve 213 twists relative to both ends under the action of the torque shaft 212 and the bushing 214. The principle of the twisting of the deformation sleeve 213 is as follows: The deformation sleeve 213 includes internal splines and external splines. One end of the internal splines of the deformation sleeve 213 is connected to the external splines of the torque shaft 212, and the other end of the external splines of the deformation sleeve 213 is connected to the internal splines of the bushing 214. When the user leans forward, the board surface 1 presses on the bridge 2 at the front end of the skate. At this time, after the board surface 1 applies pressure downward to the bushing 214, the center of the eccentric member 22 will shift, that is, the torque shaft 212 will have a tendency to rotate. One end of the internal deformation sleeve 213 inside is driven by the torque shaft 212 through splines and also has a tendency to rotate. The other end, under the condition of being spline-connected to the fixed bushing 214, the two ends of the deformation sleeve 213 rotate relative to each other and are twisted. At this time, the alloy sheet located on the deformation sleeve 213 is slightly twisted, so as to convert the torsion into pressure, which is convenient for the subsequent controller to use as the basis for power output.

[0023] As Figure 1 or Figure 2 As shown, the outer surface of the bushing 214 is provided with a protrusion 4, and the protrusion 4 is connected to the board surface 1. The purpose is to facilitate the conversion of the pressure applied downward by the board surface 1 to the center offset of the eccentric member 22. The protrusion 4 can be horizontally arranged. One end of the protrusion 4 in the present utility model is inclined upward towards the bushing 214.

[0024] As Figure 1 As shown, a driving member 5 is further provided on the bridge 2 at any end of the board surface 1. The driving member 5 is used to drive the skate wheels 3 to rotate. The driving member 5 includes a pulley group or a mid-mounted motor assembly. Among them, the power part of the pulley group is located on the bridge 2 and is directly connected to the skate wheels 3 through a belt. The mid-mounted motor assembly directly integrates the power part into the skate wheels 3. Specifically, through the movement of the user's center of gravity on the board surface 1, the change in the pressure applied by the board surface 1 to any end bridge 2 is used as the basis for the controller to control the output of the driving member 5 according to the torque change in the torque member 21.

[0025] The above are only the preferred embodiments of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. All technical solutions falling within the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present utility model should also be regarded as within the protection scope of the present utility model.

Claims

1. An electric skateboard, comprising a board (1) and a bridge (2), characterized in that: The bridge frame (2) comprises a torque member (21) and two groups of eccentric members (22); the torque member (21) is connected to the board surface (1); two ends of the torque member (21) are respectively connected to the skateboard wheels (3) via the eccentric members (22); the torque member (21) comprises a torque sensor (211); when the board surface (1) applies pressure to the torque member (21), the torque sensor (211) acquires a torque value.

2. The electric skateboard according to claim 1, characterized in that: The torque member (21) comprises a torque shaft (212), a deformation sleeve (213) and a shaft sleeve (214); two ends of the torque shaft (212) are respectively connected to the skateboard wheel (3) through an eccentric member (22); the deformation sleeve (213) is located outside the torque shaft (212); the torque sensor (211) is sleeved on the deformation sleeve (213); the shaft sleeve (214) is located outside the deformation sleeve (213); the outer surface of the shaft sleeve (214) is connected to the board surface (1); when the board surface (1) applies pressure to the shaft sleeve (214), the deformation sleeve (213) is twisted relative to the two ends under the action of the torque shaft (212) and the shaft sleeve (214).

3. The electric skateboard according to claim 2, characterized in that: One end of the deformation sleeve (213) is connected to the torque shaft (212) via a spline, and the other end of the deformation sleeve (213) is connected to the shaft sleeve (214) via a spline.

4. The electric skateboard according to claim 3, characterized in that: The outer surface of the shaft sleeve (214) is provided with a protrusion (4), and the protrusion (4) is connected to the plate surface (1).

5. The electric skateboard according to claim 4, characterized in that: One end of the protrusion (4) is arranged obliquely toward the upper side of the shaft sleeve (214).

6. An electric skateboard according to claim 1 or 4, characterized in that: A driving member (5) is also provided on the bridge frame (2) at any end of the board surface (1), and the driving member (5) is used to drive the skateboard wheels (3) to rotate.

7. The electric skateboard according to claim 6, characterized in that: The driving member (5) comprises a pulley set or a central motor assembly.

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