Simple, glue-free movable track model with dual-pin structure

Abstract

A simple, glue-free movable track model with a dual-pin structure comprises an intermediate connecting component (1), a track shoe (2), elastic pin bushes (58) and an auxiliary clamp, an elastic opening (50) is formed on a rotating shaft hole of the intermediate connecting component (1), and the intermediate connecting component (1) is spliced, in a snap-fit manner, with an intermediate rotating shaft (51) of the track shoe (2) through the elastic opening (50); back-off dowels (21) are arranged at the both ends of the track shoe (2) and are spliced with the elastic pin bushes (58) so that the elastic pin bushes (58) can be fit into the back-off dowels (21) and then securely engaged. The movable track model can realize one-time assembly, reduce manufacturing difficulty and improve manufacturing efficiency.

Claims

1. A simple, glue-free movable track model with a dual-pin structure, comprising intermediate connecting components, track shoes, elastic pin bushes, and an auxiliary clamp assembly; wherein an elastic opening is formed on a rotating shaft hole of the intermediate connecting components, and the intermediate connecting components are spliced, in a snap-fit manner, with intermediate rotating shafts of the track shoes via the elastic opening; back-off pins are arranged at both ends of the track shoes and are spliced with the elastic pin bushes so that the back-off pins can be fit into the elastic pin bushes and then securely engaged; wherein the auxiliary clamp assembly comprises an upper auxiliary clamp, a lower auxiliary clamp and a third auxiliary clamp; locating pins are defined at both ends of the upper auxiliary clamp, locating holes corresponding to the locating pins are defined at both ends of the lower auxiliary clamp, and the locating pins are engaged with the locating holes with an interference fit to secure the track shoes placed between the upper auxiliary clamp and the lower auxiliary clamp; the track shoes are horizontally connected together by the intermediate connecting components; an elongate opening is defined on the upper auxiliary clamp for receiving the intermediate connecting components; a plurality of model holes are defined in the third auxiliary clamp for loading the elastic pin bushes respectively and the elastic pin bushes are engaged with the back-off pins all at once via the third auxiliary clamp.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The present invention will be further described in the following with reference to the accompanying drawings and in combination with the embodiments.

(2) FIG. 1 is an assembling view of a track according to a preferred embodiment of the present invention;

(3) FIG. 2 is schematic view of an upper auxiliary clamp and a lower auxiliary clamp according to a preferred embodiment of the present invention;

(4) FIG. 3 is a schematic view showing assembling steps of the track according to a preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

(5) Referring to FIG. 1, an intermediate connecting component 1 and a track shoe 2 are shown in FIG. 1. An elastic opening 50 is formed on a rotating shaft hole of the intermediate connecting component 1, and is bit with an intermediate rotating shaft 51. Namely, the intermediate rotating shaft 51 is bit within the elastic opening 50, which functions to connect the intermediate connecting component 1 with the track shoe 2. The intermediate connecting component 1 and the track shoe 2 are made of PS (polystyrene) material, and are assembled in groups of six.

(6) Back-off pins 21 are arranged at both ends of the track shoe 2 and are spliced with elastic pin bushes 58 so that the back-off pins 21 can be fit into the elastic pin bushes 58 and then securely engaged.

(7) An auxiliary clamp comprises an upper auxiliary clamp 52, a lower auxiliary clamp 53 and a third auxiliary clamp 57.

(8) As shown in FIG. 2, the intermediate connecting component 1 and the track shoe 2 are fixed between the upper auxiliary clamp 52 and the lower auxiliary clamp 53. An elongate opening 56 is defined on the upper auxiliary clamp 52 for receiving intermediate connecting components 1. A locating pin 54 is arranged on the upper auxiliary clamp 52, a locating hole 55 corresponding to the locating pin 52 is arranged on the lower auxiliary clamp, and the locating pin 54 is fit into the locating hole 55 to secure the upper auxiliary clamp 52 and the lower auxiliary clamp 53.

(9) As shown in step 31 of FIG. 3, the elastic pin bushes 58 made of TPE (Thermoplastic Elastomer) material is ranged in a runner according to the distance and location of the back-off pins 21 on the track shoe 2. As shown in step 32 of FIG. 3, it is placed in the model holes 59 of the third auxiliary clamp 57 when assembling, and then the runner is cut. As shown in step 33 of FIG. 3, the third auxiliary clamp 57 loaded with the elastic pin bushes 58 makes the five elastic pin bushes receive the back-off pins 21 of the track shoe 2 all at once along the guide rod of the lower auxiliary clamp 53.

(10) The above mentioned form, structure and the idea of their combination, realize a simple, glue-free movable track model simulating real dual-pin track structure. While the present invention discloses the specific implementations in above mentioned embodiments, the present invention is not limited to the scope described in above embodiments. Any modification or variation made without breaking away from the spirit and scope of the present invention also belongs to the protection scope of the present invention.