| 摘要 |
PROBLEM TO BE SOLVED: To support a load applied on a pocket coil, directly by the load support surface of a storage chamber for the pocket coil with which the end part of a stored compression coil spring makes internal contact. SOLUTION: Fixed mounting parts 4, each pointing to the direction of width, of a cylindrical body 3 formed that two side parts 20 and 20 extending along the direction of the length of belt-form cloth 2 are overlapped are formed with a distance therebetween in the direction of the length of the cylindrical body 3. A pocket coil is constituted that a compression coil spring 1 is stored in each of storage chambers 5 divided from each other by the respective fixed mounting parts 4 such that the winding axis of the coil points to the direction of the width of the cylindrical body 3. Constitution is that the height of the pocket coil P in a position where the fixed mounting part 4 is formed is not increased to a value higher than size between upper and under load support surfaces 6 and 6 of the pocket coil P with which the end part of the compression coil spring 1 in the storage chamber 5 makes internal contact. |
