TWI427207B - Twisted cable - Google Patents

Description

rope

The present invention relates to a rope, and more particularly to a rope for a vehicle.

The metal rope is often used in the brake system of the vehicle, and can be used for the user to press the brake clamp while pressing the brake grip to enable the brake to operate normally. Conventional metal ropes are mostly intertwined with a plurality of identical metal strings, as described in the patents TW 227 238, US 6,119, 747 and US 6,405, 774, wherein the majority of the 27 strands are mainly within the strength of the strands. Moreover, the ropes are mostly staggered and superposed. Therefore, since the most central rope is viewed in the radial direction, the layers of the ropes are staggered with each other. Therefore, if the rope is subjected to the radial force, the rope is easily retracted. Squeeze deforms the rope.

According to the above, in the process of braking, the rope is pulled along the length direction, and since the length of the rope is difficult to deform, the tension will turn to cause a radial contraction displacement of the rope, and when the rope is indented, it will further This causes the length of the rope to elongate, resulting in reduced sensitivity and accuracy of the brake system.

SUMMARY OF THE INVENTION A primary object of the present invention is to provide a cord having better strength and a smaller amount of deformation for more precise transmission of force.

To achieve the above object, the present invention provides a rope comprising a body. The book The body comprises a central rope and a plurality of winding ropes, the winding ropes are arranged around the central rope, and the winding ropes are arranged outwardly by the central rope as an inner layer. a middle layer and an outer layer; wherein the winding ropes comprise a first rope, a second rope and a third rope, the first rope and the second rope having the same cross-sectional dimension, the third rope The cross-sectional dimension of the first rope, the second rope, and the third rope is smaller than the cross-sectional dimension of the center rope, and the cross-sectional dimension of the first rope, the second rope, and the third rope is smaller than a cross-sectional dimension of the center rope. The inner layer comprises six first strands, the middle layer comprising twelve strands of second strands, the outer layer comprising eighteen strands of third strands, the looped cords being arranged around the central cord and wound together around the central strand.

Thereby, the rope provided by the invention has a relatively uniform strand distribution and an appropriate strand gap, can provide better structural strength, and can transmit the axial pulling force more uniformly, and therefore can be used for vehicle transmission. The tension is transmitted accurately, and the deformation on the length is not easy to affect the displacement accuracy.

10‧‧‧ Ontology

11‧‧‧Center rope

12‧‧‧First rope

13‧‧‧second rope

14‧‧‧third rope

Figure 1 is a perspective view of the present invention.

2 is a perspective view of the body of the present invention.

Figure 3 is a cross-sectional view of the present invention.

The following is a description of the possible embodiments of the present invention, and is not intended to limit the scope of the invention as claimed.

Referring to Figures 1 to 3, the present invention provides a cord comprising a body 10. The body 10 includes a central rope 11 and a plurality of winding ropes, and the winding ropes surround the center The cords 11 are arranged around the cords, and the looped cords are sequentially arranged outwardly by the central cord 11 as an inner layer, a middle layer and an outer layer; wherein the winding cords comprise a first string 12, a second string 13 and a third string 14, the first string 12 and the second string 13 having the same cross-sectional dimension, the third string 14 having a smaller cross-sectional dimension than the first string 12 or the second The cross-sectional dimension of the first cord 12, the second cord 13 and the third cord 14 are smaller than the cross-sectional dimension of the central cord 10, and the inner layer comprises six first strands. A wire 12 comprising twelve second strands 13 comprising eighteen third strands 14 which are arranged around the central strand 11 and wound together around the central strand 11.

In the main embodiment of the present invention, the center cable 11 and the winding wires are all circular in cross section, and the center cable 11 and the winding wires are made of metal. Preferably, The ratio of the cross-sectional diameter of the center string 11, the first string 12, the second string 13 and the third string 14 is about 23:22:22:21, more precisely, in a specific embodiment. The cross-sectional diameters of the center string 11, the first string 12, the second string 13 and the third string 14 are 0.23 mm, 0.22 mm, 0.22 mm and 0.21 mm, respectively.

In addition, if viewed in cross section, as shown in FIG. 3, the center string 11, each of the first strands 12, one of the second strands 13, and one of the third strands 14 are arranged in a line, due to the center. Six first strands 12 are arranged on the circumference of the string 11, so that the center strand 11, the second strand 12, the second strand 13 and the second strand 14 are arranged in a straight line. The strands are located on the diameter of the body and sequentially abut against each other to form a joint structure on the same plane. Therefore, the body is formed with three joint structures, and the three joint structures are equiangularly distributed to the center rope. Interlaced, thereby forming a radial skeleton structure centered on the center string, and the remaining second strands 13 and the third strands 14 are evenly distributed among the joint structures between.

According to the vehicle, the transmission rope must bear the axial tensile force, and the multi-strand rope has a small allowable deformation amount in the axial direction, and has a large allowable deformation amount in the radial direction due to the gap between the strands. Therefore, when the multi-strand rope is subjected to the axial tensile force, the radial retraction situation is more likely to occur than the axial tensile deformation. If the radial retraction occurs, the overall length of the rope may be elongated. However, when the rope is used for transmission, variations in length may cause errors in transmission and control. With the radial skeleton structure of the present invention, the body can have several preferred supports in the radial direction, so that the body is less prone to radial contraction, even if the second string is not part of the radial skeleton structure. The third rope is also not easy to be indented and deformed due to the outward support of the skeleton structure, and the body is less prone to axial length variation, so that accurate tension transmission and control can be provided, and the skeleton structure provides a better structure. Strength, and the second and third strings between the skeleton structures can be used as a buffer, so the body can still have bending ability without being too stiff, which can be said to have both structural strength, bending toughness and minimum length variation. The advantages.

11‧‧‧Center rope

12‧‧‧First rope

13‧‧‧second rope

14‧‧‧third rope

Claims (4)

A rope comprising a body, the body comprising: a central rope and a plurality of winding ropes, the winding ropes being arranged around the central rope, the winding ropes being aligned by the central rope The outer outer layer is arranged as an inner layer, a middle layer and an outer layer; wherein the winding ropes comprise a first rope, a second rope and a third rope, and the first rope and the second rope The cross-sectional dimension of the third rope is smaller than the cross-sectional dimension of the first rope or the second rope, and the cross-sectional dimensions of the first rope, the second rope and the third rope are all smaller than The cross-sectional dimension of the center string, the inner layer comprising six first strands, the middle layer comprising twelve strands of second strands, the outer layer comprising eighteen strands of third strands, the strands of rope being arranged around the center rope After that, the central rope is wound together; wherein, in cross section, the center rope, each of the first ropes, one of the second ropes, and one of the third ropes are arranged in a line. The rope of claim 1, wherein the center string and the plurality of winding cords are circular in cross section. The rope of claim 2, wherein the center rope, the first rope, the second rope, and the fourth rope have a cross-sectional diameter ratio of about 23:22:22:21. The rope of claim 1, wherein the center string and the winding cords are made of metal.