KR20240018835A - Racing track with ratchet and spring pin fastening structure and capable of 3D printing - Google Patents

Abstract

The racing track, which has a ratchet and spring pin fastening structure according to the present invention and is capable of 3D printing, is a device that helps keep an object racing along a certain travel path on the ground from deviating from the path, and uses a plurality of blocks (C) to attach spring pins. It has a structure of assembling by continuously inserting (4) into the spring pin socket (5), saves material through a shape design in which the shell (6) and overhang are controlled, and has a curve top (7) and curve bottom (8) ) The shape allows the bending angle to be increased, maintains its shape even after impact, can be refracted at a certain angle, the angle can be visually confirmed even after assembly, and the racing track can be easily assembled and disassembled without tools. will be.

Description

Racing track with ratchet and spring pin fastening structure and capable of 3D printing

The present invention relates to a racing track that has a ratchet and spring pin fastening structure and is capable of 3D printing. More specifically, 1. The ratchet and spring pin composite structure prevents rotation to prevent RC cars (remote control cars), etc. from colliding with blocks. When assembled, it maintains the shape of the track and implements a function of distinguishing and deflecting certain angles when assembling. 2. The spring pin structure serves to facilitate assembly between each block, and 3. Support: When 3D printing, the protruding part of the output is maintained. Overhang angle: refers to the angle formed by the inclined plane relative to the printing ground. 0 degrees provides support at all angles, and 90 degrees provides support at all angles. is not output) is about a racing track that reduces the required materials through a controlled design.

The configuration, operation examples, and problems of the prior art along with the attached drawings are as follows.

Figure 1 is a perspective view showing a racing track to which conventional technology is applied. In general, tracks for racing are aimed at preventing vehicles from deviating from a certain driving path and have a multi-joint structure that connects blocks to secure the track length.

Looking at the configuration of Figure 1, the connection pin (1) of the block (A) is inserted and connected to the connection hole (2) of the block (B), and the length of the track is adjusted through additional connection of the same part.

An operation example of the above configuration is as follows.

Blocks (A) and blocks (B) are connected by insertion pins (1), and each part can rotate horizontally in a range of about 200 degrees, so the rotation radius of the circuit can be adjusted by adjusting the rotation range of the track joint. It can be adjusted.

The problems of the prior art examined in the above configuration and operation examples are as follows.

First, when a running RC car collides with a block (A or B) of a racing track, the angle between the blocks becomes distorted and the track shape is deformed.

Second, because there are many overhang shapes, a lot of material is consumed for support output when produced using 3D printing.

Third, each block does not support connection methods other than pin insertion, so there is a lack of additional expandable functions (signs, traffic lights, etc.).

Accordingly, the purpose of the present invention is to produce a racing circuit that is not only quick and solid in assembly, but also has a cost-saving design that enables 3D printing, ensures expandability of additional functions, and maintains its shape even in the event of a collision along with an angle adjustment function.

In order to achieve the above object, the present invention enables angle fixation and adjustment through a ratchet and spring pin composite structure, and 3D printing by controlling the overhang angle while seeking to reduce costs with an empty shell design. Implement this possible design. Additionally, it allows for additional pins to be inserted into the joints, opening up the possibility of expanding functionality.

The racing track, which has a ratchet and spring pin fastening structure according to the present invention and is capable of 3D printing, has the following effects.

First, when a running RC car, etc., collides with a block on a racing track, the track shape is not deformed because the fastening parts are tightly bound by a ratchet and spring pin composite structure.

Second, 3D printing can be selected as a commercial production method by minimizing the overhang section, and there is a material saving effect by choosing an empty shell structure.

Third, all rigidity has been designed with 3D printing in mind, and no separate tools are required for assembly and disassembly, and the essential parts for the track only need to be connected one by one, so children over 5 years old can intuitively use them. It was made ready for assembly.

Fourth, the contact area between blocks was curved to increase the angle of refraction when the block was folded to the maximum.

Fifth, an expansion socket is provided using a spring pin connection part and additional functions can be installed on the track.

Figure 1 is a perspective view showing a racing track to which conventional technology is applied.
Figure 2 is a perspective view showing a racing track to which the technology of the present invention is applied.
Figure 3 is a plan view and cross-sectional view showing the maximum refraction angle and cross-section of a racing track to which the technology of the present invention is applied.

The configuration, operation examples, and effects of the present invention to achieve the above object are as follows in relation to the accompanying drawings.

Figure 1 is a perspective view showing a racing track to which existing technology is applied, Figure 2 is a perspective view showing a racing track to which the technology of the present invention is applied, and Figure 3 is a plan view and a cross-sectional view of a racing track to which the technology of the present invention is applied.

In general, the purpose of a racing track is to prevent vehicles from deviating from a certain driving path, and as shown in Figure 1, it is a multi-joint track that connects blocks (A) and blocks (B) through connecting pins (1) to secure the track length. It has a structure.

In the present invention, the blocks (A) and blocks (B) are improved to facilitate assembly, can be directly applied to 3D printing using FDM (Fused Deposition Modeling) technology, requires less production cost, and has improved functionality. It is expandable, easy to adjust the angle of the track, and prevents track deformation due to collision.

For this purpose, the present invention is configured as follows.

Connect several blocks (C) to form a track of the desired length. At this time, the spring pin (4) is inserted into the spring pin socket (5) with an interference fit. At this time, the spring pin (4) has a protrusion for the ratchet (3) function, so that it engages with the internal protrusion of the spring pin socket (5) and is tightly fastened, thereby providing angle adjustment and maintenance functions.

An example of operation of the present invention according to the above configuration is as follows.

When the block (C) and the block (C) are combined and the part is bent in the horizontal direction, the upper curve (7) and the lower curve (8) are attached to the contact surfaces of the connected blocks, respectively, and the maximum rotation angle is shown in Figure 3. As shown, it is 120° on one side and 240° on both sides.

There are 18 protrusions for the ratchet (3) function, and an angle of 20° is assigned to each protrusion (basis of calculation: 360°/18=20°), so when the combined block is straightened and bent to one side, a total of 6 A number of segmental refractions are made (calculation basis: 120/20 = 6), and the maximum angle of segmental refraction is 120 degrees to one side.

There are 9 protrusions on the outside of the outer diameter of the spring pin socket (5) for checking the rotation angle, and the angle assigned to each protrusion is 40 degrees. The current bending angle can be visually confirmed in the assembled state by checking the position of the small groove at the top of the spring pin (4) and the protrusion.

The present invention according to the above configuration and operating example has the following effects.

First, when a running RC car, etc., collides with a block (C) of a racing track, the shape of the track is not deformed because the fastening part is tightly bound by the composite structure of the ratchet (3) and spring pin (4).

Second, the overhang angle of the shell (6) is controlled to within 60 degrees in most cases, and the peak arch (9) is bridged (3D printing terminology: a technique that allows a stacked 3D printer to print in the air without a bottom). ) 3D printing can be applied as a commercial production method by minimizing it so that it can be printed, and there is a material saving effect by choosing an empty shell structure as shown in the cross-sectional view Z-Z of Figure 3.

Third, all rigidity was designed with 3D printing in mind, and no separate tools are required for assembly and disassembly, and the part (C) essential to the track can be used by children over 5 years of age as it only needs to be connected continuously. It allows for intuitive assembly.

Fourth, the bending angle on one side can be increased up to 120 degrees when the block is fully folded due to the curved top (7) and curved bottom (8) design, and the ratchet (3) and spring pin (4) composite structure is adopted. The refraction function is divided into 20 degree increments and the angle of refraction can be visually confirmed even in the assembled state.

Fifth, the spring pin (4) has a shape that allows insertion of an internal pin even when the connection between blocks (C) is completed, so this point is used to provide expandability and allow additional functions to be installed on the track.

*Explanation of symbols used in main parts of the drawing*

A: Block A with existing technology B: Block B with existing technology

C: Block to which the technology of the present invention is applied Z-Z: Cutting line to indicate cross section

1: Connection pin 2: Connection hole

3: ratchet 4: spring pin

5: Spring pin socket 6: Shell

7: Top of curve 8: Bottom of curve

9: pointed arch

This invention was designed with 3D printing in mind. In order to save materials, it minimizes supports, which are discarded parts after printing, and adopts a shell structure with an empty space inside, while the strength design uses polycarbonate (PC) as the filament material. It was designed to be easily assembled and disassembled based on the time, and sufficient durability was secured.

As a material, PLA (Poly Lactic Acid), a low-cost material commonly used in 3D printing, can be used as an alternative, and injection molding can be used as another manufacturing method. The target market is the market related to small figures and RC cars with a scale of 1/24 to 1/76.

Claims (1)

The connection between the blocks (C) is composed of a composite structure of the ratchet (3) and the spring pin (4), and the bending angle of the block can be adjusted due to the protrusion of the ratchet (3), and the spring pin ( 4) The bending angle can be calculated by comparing the positions of the upper small groove and the external protrusion of the spring pin socket (5). To secure the bending angle, the curve has a curved shape at the top (7) and the bottom (8) of the curve, and the shell (6) A racing track that seeks to save material through its structure and controls the overhang angle of most structural parts of the shell (6) within 60 degrees to minimize support consumed unnecessarily during 3D printing, enabling 3D printing.