JP3058284U - Urethane piece reinforcement structure - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose of the present invention is to prevent loosening and tearing by reinforcing and strengthening the connection portion of the urethane pieces constituting the band. The present invention relates to a band in which a metal piece and an urethane piece are alternately meshed or only a urethane piece is meshed, and a connecting pin is inserted into each of the meshing portions and connected to each other. One or several reinforcing grooves are provided, and a reinforcing skeleton made of a metal plate or the like is incorporated in the one or several reinforcing grooves, and a connection is formed at both ends of the reinforcing skeleton in the connection direction with a urethane piece. A urethane piece reinforcement structure characterized by providing a pin hole for the urethane piece.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 This invention relates to a structure for reinforcing a urethane piece.

[0002]

[Prior art]

 Conventionally, urethane pieces have pin holes for connection at both ends in the connection direction, as shown in Fig. 4, and are alternately engaged with metal pieces and pin-connected, or only urethane pieces are engaged and pin-connected. Has been organized.

[0003]

[Problems to be solved by the invention]

 However, since the urethane piece is weaker than the metal piece, if a tensile pressure is applied to the band, the connecting part may be loosened or torn and the band may be disassembled.

[0004]

[Means for Solving the Problems]

 In the present invention, one or several reinforcing grooves are provided in the connecting direction of the back surface of the urethane piece, and a reinforcing skeleton made of a metal plate or the like is incorporated in the reinforcing grooves, and both ends of the reinforcing skeleton in the connecting direction are connected. In order to solve such a problem, a connecting pin hole communicating with the urethane piece is provided on the urethane piece, and the connecting pin is received by the urethane piece and the reinforcing frame.

[0005]

[Embodiment of the invention]

 This will be described below with reference to the drawings.

[0006] Inner protrusions 14a, 14b provided with shaft holes 11 having the same diameter as metal pieces 13 having engagement outer protrusions 12a, 12b having connection shaft holes 11 formed at both ends in the connection direction. Is formed. The urethane piece 15 is provided with two reinforcing grooves 16a, 16b at intervals between the inner protruding portions 14a, 14b on the back surface, and the reinforcing grooves 16a, 16b are provided with a metal skeleton 17a formed by punching a metal plate. 17b is fitted and assembled.

[0007] At both ends of the metal skeletons 17a and 17b, pin holes 11a and 11b communicating with the pin holes 11 are formed. As shown in FIGS. 2 and 3, the metal skeletons 17a and 17b are provided with protrusions 18a and 18b at the upper ends thereof so as to be seen from both ends of the urethane piece 15. This is because the pin holes 11a and 11b are enlarged so that the thicker connecting pin 19 can be used. When the pin 19 has a normal diameter, the projections 18a and 18b need not be formed.

The metal pieces 13 and the urethane pieces 15 thus formed are alternately meshed with each other, and connecting pins 19 are inserted into the communicating pin holes 11, 11a and 11b to connect the pieces to form a band 20. Is organized.

Although not shown, the band 20 can be formed by mating urethane pieces incorporating the metal skeletons 17a and 17b and inserting the pins 19.

[0010]

[Effect of the invention]

 As described above, in the present invention, a reinforcing skeleton made of a metal plate or the like is assembled on the back surface in the connecting direction of the urethane piece in one or several lines, and connecting pin holes communicating with the urethane piece are provided at both ends of the reinforcing skeleton. Since the pin holes are provided to reinforce and reinforce the pin holes, the connection part has the same strength as the metal piece, and the gap between the pieces is unobtrusive even if tensile pressure is applied, regardless of whether the urethane piece is weaker in strength than the metal piece. It has the effect of not sagging or tearing.

[Brief description of the drawings]

FIG. 1 is a plan view of a band showing an embodiment of the present invention.

FIG. 2 is an enlarged longitudinal side view of the same.

FIG. 3 is a perspective view of a urethane piece showing a state before one metal skeleton is fitted and assembled.

FIG. 4 is a plan view of a conventional band.

[Explanation of symbols]

 11 is a pin hole of a urethane piece. 11a and 11b are pin holes provided at both ends of the reinforcing frame. 12a and 12b are outer projections for engagement. 13 is a metal piece. 14 is an inner projection. 15 is a urethane piece. The pieces 16a, 16b are reinforcing grooves 17a, 17b are metal skeletons 18a, 18b are protrusions 19 are connecting pins 20 are bands

Claims (1)

[Utility model registration claims] 1. A band in which a metal piece and an urethane piece are alternately meshed or only a urethane piece is meshed, and a connecting pin is inserted into each of the meshing portions and connected to each other. A plurality of reinforcing grooves are provided, and a reinforcing skeleton made of a metal plate or the like is incorporated in the one or several reinforcing grooves, and a connecting frame for communicating with a urethane piece at both ends in a connecting direction of each reinforcing frame. Reinforcement structure for urethane pieces, characterized by having pin holes.