KR20230013183A - Skateboard - Google Patents

Abstract

The present invention relates to a skateboard. More specifically, a front board and a rear board equipped with tilting casters (directional casters) are connected by connectors and can be elastically twisted in opposite directions, so that a user steps on the front board and the rear board with both feet, respectively, and twists the front and rear boards in opposite directions to obtain propulsion or change the direction. This type of skateboard can be used as a means of entertainment, leisure, and short distance transportation because of its self-propulsion, compared to a classic skateboard that is provided with only one board deck and performs only a gliding function.

Description

Skateboard {Skateboard}

The present invention relates to a skateboard. More specifically, it relates to a skateboard in which a front board and a rear board equipped with inclined casters in the longitudinal direction of the skateboard are connected by connectors and can be elastically twisted in opposite directions. . The user can voluntarily obtain propulsion or perform a sudden change of direction by stepping on the front board and the rear board with both feet so as to twist in opposite directions, so that the user can have propulsion by himself compared to a classic skateboard that only performs a gliding function, Since the minimum turning radius is possible, it can be used for short distance transportation as well as for entertainment and leisure.

A specific configuration and operating principle related to a skateboard capable of spontaneous propulsion and easy direction change as described above is described in detail in Registered Patent No. 394848. Specifically, two front and rear boards, a directional caster attached to the bottom of these boards in an inclined state, and an elastic body are built-in to connect the two boards to each other and to be able to restore when twisted or bent. It consists of a twisted pipe and a fastening element for mounting the pipe. In the case of the torsion pipe, the front and rear two pipes are connected by bearings and installed to enable idle rotation, and a spring and a catch are mounted through an inner pipe mounted in the pipe, and a plate spring installed in the inner pipe at the same time It is constructed by fixing with screws in the holder. Therefore, when the board travels, elastic deformation occurs due to the relative torsional motion between the front and rear pipes, and when the torsional external force disappears, the torsion pipe is restored to its original state, so that the front and rear boards are elastically rolled in a mutually crossed manner, moving in a wavelike manner. be able to move forward

If the above configuration is re-expressed according to the terminology of the present invention, it includes a front deck 100, a rear deck 200, a connector 300 (torsion bar), and the front deck 100 takes a plate shape and has a front wheel on the bottom. It includes a caster 110 and a fitting part 120 at the rear end. And the rear deck 200 takes a plate shape and includes a rear wheel caster 210 on the bottom and a fitting part 220 on the front end. In addition, the connector 300 includes a pipe 310 and an elastic body 320, and is disposed between the front deck 100 and the rear deck 200 so that the two are twisted and elastically restored. However, when a load is applied to the front deck 100 and the rear deck 200, in FIG. 2 (B), when the elastic body 320 is twisted in the opposite direction (s11, s12) due to the external force, the elastic body 320 ), the length reduction (d1`), which is shorter than the original length (d1) of the elastic body 320, occurs as the body meat (b323) on both sides is twisted and staggered (d1>d1`). However, the distance between the front deck 100 and the rear deck 200 is fixed by the pipe 310 of the connector 300, and both ends (left and right ends) of the elastic body 320 are fixed at the ends 321 and the fixing holes a30 are When the length of the elastic body 320 cannot be reduced because it is fastened to the bolt hole a20 at the end of each fitting part 120 of the front deck 100 and the rear deck 200, respectively, the elastic body 320 has a strong When stress is applied and this situation is repeated, deformation and breakage occur in the elastic body 320/body flesh b323. That is, the fixing hole (a30) receives strong pressure in the direction of travel (the longitudinal direction of the skateboard) and is depressed (crushed and crushed) or dented (a30`), or the straight body flesh (b323) is stretched and bent to increase elasticity (recovery force) You will lose. As a result, the elastic body 320 has a problem in that it does not perform its function and needs to be replaced due to reduced durability. Conversely, even if the length of the elastic body 320 can be increased or decreased, in this case, while the pipe 310 moves in the direction of movement with the fitting part 120, the fitting becomes loose due to strong friction, resulting in shaking or the fitting part 120 or the pipe. (310) There is a problem in that durability deteriorates due to deformation or damage of both front and rear ends (front and rear ends).

Meanwhile, as related to a hinge structure of a skateboard, a skateboard including a front board, a rear board, and a hinge member is disclosed in Patent Registration No. 885506. In detail, the hinge unit may include a first hinge housing having a hollow part having one side open at one end of the bottom surface of the rear board facing the front board; a second hinge housing having a hinge cylinder whose other side is open at the other end of the lower surface of the front board facing the rear board; a hinge shaft coupled to the first hinge housing on one side and bolted to the second hinge housing on the other side; at least one bearing coupled to one side of the hinge shaft; a fixed hinge cam that is axially coupled to the hinge shaft, has one side fitted to one end side of the outer side of the hollow part of the first hinge housing, and has a fixed contact portion diagonally cut at the other side to form an elliptical shape; A floating contact portion is formed that is axially coupled to the hinge shaft and is formed to face the fixed contact portion of the fixed hinge cam, and the floating contact portion moves and rotates along the fixed contact portion to rotate in an axial direction within the hinge cylinder of the second hinge housing. a movable hinge cam coupled to be movable; a hinge spring installed inside the hinge cylinder and positioned between the movable hinge cam and the hinge cylinder to apply an elastic force toward the movable hinge cam; and a fixing means bolted to ends of the front board and the rear board facing each other to prevent the hinge shaft from being separated from the first and second hinge housings. However, this configuration is too complicated and the number of parts increases, which is disadvantageous to the manufacturing process and mass production.

Registered Patent No. 394848 (2003.08.04.) Registered Patent No. 885506 (2009.02.18.) Registered Patent No. 989327 (2010.10.15.)

The present invention is to solve the above problems in providing a skateboard, to provide a configuration in which the manufacturing process is easier, the driving performance is improved, and the durability is increased.

In order to meet the above problems, the present invention includes a front deck 100, a rear deck 200 and a connector 300,

The front deck 100 takes a plate shape and includes a front caster 110 on the bottom and a fitting 120 on the rear end,

The rear deck 200 takes a plate shape and includes a rear wheel caster 210 on the bottom and a fitting 220 on the front end,

The connector 300 includes a pipe 310 and an elastic body 320, and is disposed between the front deck 100 and the rear deck 200 so that the two can be twisted and elastically restored,

Each fitting part 120, 220 has a fitting hole (a10) drilled in the direction of travel therein, and a bolt hole (a20) punched vertically at the end of each fitting part 120, 220. is perforated,

The pipe 310 includes a receiving hole a50,

The elastic body 320 is longer than the pipe 310, fixed ends 321 are formed at both ends of the elastic body 320, and fixed holes a30 in the vertical direction are formed at the fixed ends 321,

The elastic body 320 is fitted and accommodated in the pipe 310, and both end fixed ends 321 of the elastic body 320 are exposed out of both ends of the pipe 310, respectively.

Both ends of the pipe 310 are pivotally coupled by being inserted into the fitting parts 120 and 220, respectively.

At the same time, each fixing hole (a30) at both ends of the elastic body (320) matches the bolt hole (a20) at the end of each fitting part (120, 220) and is fixed with a bolt, the front deck (100) and the rear deck (200) As a skateboard that binds and provides elastic restoring force against torsion,

The body of the elastic body 320 is formed with a cutting groove (a40) perforated in the traveling direction, and body flesh (323) is disposed on both left and right sides of the cutting groove (a40), connecting the body flesh (323) on both sides to each other. The rib meat 324 is disposed between the body meat 323 on both sides,

The body meat 323 takes an arch shape with a curvature bent toward the center of the incision groove a40, and the rib meat 324 takes an arc shape with a curvature bent in the traveling direction,

When twist is given to the elastic body 320 by an external force, in response to the length reduction occurring as the body flesh 323 on both sides is twisted, the arch shape of the body flesh 323 on both sides is straightened (straight, straight) As a method of correcting the length reduction, the length reduction of the entire elastic body 320 is prevented, and at the same time, the arch shape of the rib 324 is straightened and the body flesh 323 on both sides moves away from each other. Configured to respond to this, Skateboards are provided.

According to the present invention, it is possible to provide a skateboard having a configuration in which the manufacturing process is easier, the driving performance is improved, and the durability is increased.

1 and 2 show an embodiment of the background art,
1 shows a perspective view and a perspective view seen from the bottom.
In Figure 2, Figure 2 (a) is an exploded view seen from the bottom. Fig. 2 (b) is an exploded view of the connector, which is a plan view of the elastic body and a plan view of the pipe. 2(c) is a perspective plan view of the assembled connector.
Figure 3 is an embodiment of the present invention, Figure 3 (a) is a plan view of the elastic body 320. 3 (b) is an operating state diagram.

Hereinafter, the specific configuration of the present invention will be described with reference to the accompanying drawings. The present invention includes a front deck 100, a rear deck 200, and a connector 300, and alternately twists and turns the front deck 100 and the rear deck 200 bound by the connector 300 in opposite directions. It relates to a known skateboard capable of voluntarily proceeding by obtaining direction change and propulsion.

Here, the front deck 100 takes a plate shape and includes a front wheel caster 110 on the bottom and a fitting part 120 on the rear end. The rear deck 200 takes a plate shape and includes a rear wheel caster 210 on the bottom and a fitting part 220 on the front end. The connector 300 includes a pipe 310 and an elastic body 320, and is disposed between the front deck 100 and the rear deck 200 so that both the front deck 100 and the rear deck 200 twist each other (twist). or twisting) and elastic restoration (applying elastic resistance against load and then restoring with elastic force).

The fitting part 120 of the front deck 100 is formed with a fitting hole (a10) in which holes are drilled in the traveling direction (ie, the longitudinal direction of the skateboard) therein, and the fitting part 120 of the front deck 100 is formed. At the end, a bolt hole a20 is formed by drilling a hole in a vertical direction.

The fitting part 220 of the rear deck 200 is formed with a fitting hole (a10) in which a hole is drilled in the traveling direction therein, and a hole is punched in the vertical direction at the end of the fitting part 120 of the rear deck 200. A bolt hole a20 is formed.

The pipe 310 includes an accommodating hole a50 hollowed out to accommodate the elastic body 320 therein, and a hole is bored therein in a traveling direction.

The elastic body 320 is provided as a rod-shaped elastic member having a longer length than the pipe 310 . At both ends (front and rear ends) of the elastic body 320, flat fixed ends 321 are formed, respectively. At this time,

The ends of each fitting portion 120, 220 are formed in an internal shape to correspond to the flat shape of each fixed end portion 321 . Each fixing end 321 is formed with a fixing hole (a30) in which a hole is drilled in the vertical direction, and the fixing hole (a30) is temporarily threaded and fixed (fastened) to the bolt hole (a20) when the bolt (a21) is fastened. .

After the elastic body 320 is inserted into the pipe 310 in the direction of travel, it is accommodated, and the fixed ends 321 at both ends of the elastic body 320 are exposed to the outside of both ends of the pipe 310, respectively.

The front end of the pipe 310 is fitted into the fitting part 120 of the front deck 100 to be rotatably pivotally coupled, and the rear end of the pipe 310 is fitted into the fitting part 220 of the rear deck 200 to pivot to make it rotatable. Being coupled, the front deck 100 and the rear deck 200 are mutually torsionally guided.

At this time, when the fixed end 321 of the front end of the elastic body 320 is disposed at the end of the fitting part 120 of the front deck 100,

The front end fixing end 321 fixing hole a30 is positioned (matched) to the bolt hole a20 at the end of the fitting portion 120 of the front deck 100, and then fastened (fixed) with a bolt a21. And when the fixed end 321 of the rear end of the elastic body 320 is disposed at the end of the fitting part 220 of the back deck 200,

The fixing hole a30 of the rear end fixing end 321 is positioned (matched) to the bolt hole a20 at the end of the fitting part 220 of the rear deck 200, and then fastened (fixed) with the bolt a21. Through this, while binding the front deck 100 and the rear deck 200, elastic restoring force against torsion is provided.

In addition, an incision groove a40 is formed in the body (central side) of the elastic body 320 in a traveling direction (along the length of the body). On both sides of the incision groove (a40), body flesh 323, which is provided as an uncut portion, is disposed, and the body flesh 323 on both sides is mutually connected to each other so that the body flesh 323 on both sides strengthens the elastic resistance to twisting. At least one or more (or a plurality of ribs 324 arranged at equal intervals) are disposed between the body flesh 323 on both sides of the rib meat 324 for connecting and holding. That is, both ends of the rib meat 324 extend from the body meat 323.

In Figure 3, based on the above configuration, especially in the elastic body 320 of the skateboard of the present invention, the body 323 takes an arch shape having a curved curvature. At this time, it is preferable to bend the arch shape toward (inwardly) the center of the incision groove a40, because the arch shape should be taken inward so as not to contact the inner periphery of the receiving hole a50 of the pipe 310 and to avoid friction during twisting. This is because it is advantageous to maintain the function and maintain the shape (arch shape).

In addition, the rib meat 324 takes an arch shape having a curved curvature in the traveling direction (in the longitudinal direction of the elastic body).

When a user rides a skateboard and steps on the front deck 100 and the rear deck 200 with his or her feet and twists in the opposite direction to apply a load, the external force (load) causes the elastic body 320 torsion (s1, s2) Given this, length reduction (d1`) in which the entire length of the elastic body 320 contracts occurs as the body flesh 323 on both sides is twisted and staggered. However, here, the front deck 100 and the rear deck 200 are configured by fixing the distance by the pipe 310 of the connector 300, and the elastic body 320, both end fixing ends 321 fixing holes a30 Since each of the front deck 100 and the rear deck 200 are fastened and fixed to the bolt hole a20 at the end of each fitting part 120, the length of the elastic body 320 cannot be increased or decreased. Correspondingly, the arch shape of the body flesh 323 on both sides is straightened and the length is increased in the forward direction, and through this, the length reduction due to twist is compensated for, so that the entire length of the elastic body 320 is the original length (d1). ), it is unchanged (or slightly increased or decreased) (d1=d1`). That is, it prevents the length reduction of the elastic body 320.

In addition, when the arched body flesh 323 on both sides spreads out in a straight line (e1) and moves away from each other, the arch shape of the rib 324 extends in a straight line (e2) and increases the length of the rib flesh 324 to respond. By giving, it is possible for the arched body flesh 323 on both sides to move away from each other.

front deck (100); a front wheel caster (110); Fitting part 120;
a rear deck (200); a rear wheel caster (210); Fitting part 220;
connector 300; pipe 310; elastic body 320;
body meat 323; ribsal (324);

Claims (1)

Including a front deck 100, a rear deck 200 and a connector 300,
The front deck 100 takes a plate shape and includes a front wheel caster 110 on the bottom and a fitting part 120 on the rear end,
The rear deck 200 takes a plate shape and includes a rear wheel caster 210 on the bottom and a fitting part 220 on the front end,
The connector 300 includes a pipe 310 and an elastic body 320, is disposed between the front deck 100 and the rear deck 200 to connect,
Each fitting part 120, 220 has a fitting hole (a10) drilled in the direction of travel therein, and a bolt hole (a20) is punched at the end of each fitting part 120, 220,
The pipe 310 includes a receiving hole a50,
The elastic body 320 is longer than the pipe 310, and fixing holes a30 are formed at both ends of the elastic body 320,
The elastic body 320 is fitted and accommodated in the pipe 310, and both ends of the elastic body 320 are exposed to the outside of both ends of the pipe 310, respectively.
Both ends of the pipe 310 are pivotally coupled by being inserted into the fitting parts 120 and 220, respectively, and at the same time, each fixing hole a30 at both ends of the elastic body 320 is a bolt hole at the end of each fitting part 120 and 220 ( a20), as a skateboard that binds the front deck 100 and the rear deck 200 and provides elastic restoring force against torsion,
In the body of the elastic body 320, an incision groove (a40) is formed in the moving direction, and body flesh (323) is disposed on both left and right sides of the incision groove (a40), and ribs connecting the body flesh (323) on both sides to each other. The flesh 324 is disposed between the body flesh 323 on both sides,
The body meat 323 takes an arch shape with a curvature bent toward the center of the incision groove a40, and the rib meat 324 takes an arc shape with a curvature bent in the traveling direction,
When the elastic body 320 is twisted by an external force, in response to the reduction in length caused by twisting the body flesh 323 on both sides, the arch shape of the body flesh 323 on both sides straightens out and corrects the elastic body. (320) A skateboard characterized in that it is configured to prevent a decrease in the overall length and at the same time, to respond when the arch shape of the ribs 324 is straightened and the body meats 323 on both sides move away from each other.

Images