JPS6344204Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for stretching an S spring, which is a meandering spring material, to a desired distance.

Conventionally, a male type and a female type were made, and an S was placed between the two types.
A spring was inserted and pressure was applied to the mold to form it into a predetermined shape. At the same time, both ends of the S spring were stretched using hydraulic pressure, air, etc. as a power source.

Conventional methods require a male type, a female type, and a power source, which requires large-scale equipment.
There were problems such as increased equipment costs.

The present invention is an S-spring stretching device to solve the conventional problem.The part of the S-spring to be stretched is hooked on a holder installed on a pair of tables, and a link mechanism connected to both tables is activated. Therefore, the two tables are separated against the return spring, a desired part of the S spring is stretched, and during this time, the part that is not stretched is prevented from being deformed by a deformation prevention guide, and the stretching is completed. With this configuration, it is possible to provide an apparatus that can easily and quickly carry out enlarging operations, has a simple structure, and can be provided at low cost.

Embodiments of the present invention will be described below with reference to the drawings. The present invention is an S-spring stretching device used to stretch a desired length L of an S-spring S shown in FIG. 1 to a length L as shown in FIG.

A plurality of S springs are arranged in the vertical direction shown in FIG. 1 and entwined with each other to be used as a spring material for automobile seats, pinerests, and the like. Embodiments of the present invention are shown in FIGS. 3 to 6. The base 1 is a rectangular plate-like body, and rail bodies 3 and 3' having two guide rails 2 and 2 are fixed on the same line and spaced apart from each other on the upper surface thereof. The guide rails 2, 2 are provided with grooves 4, 4' that run along the guide rails, respectively. Sliders 5 and 5' are slidably fitted between the guide rails 2 and 2 of each rail body 3 and 3', respectively.
The sliders 5, 5' are provided with horizontally extending through holes 6, 6, respectively, and these through holes 6, 6 are positioned to align with the grooves 4, 4', respectively. While straddling the guide rails 2, 2, move the rail bodies 3, 3'
Tables 7 and 7' are slidably mounted on the top, respectively. The tables 7, 7' have guide plates 8, 8 on their lower surfaces that contact the outside of the guide rails 2, 2,
The guide plates 8, 8 are provided with bolt holes 9, 9. Holders 10, 10' having grooves extending in a direction intersecting the guide rails 2, 2 for hanging S springs on the upper surfaces of the tables 7, 7', respectively;
The stepped portion extending in the stretching direction of the S spring, that is, the S
Guides 11 and 11' are provided to prevent deformation of the non-extended portion of the spring. The holders 10, 10' have grooves extending transversely to the direction of movement of the table. Moreover, if the holders 10, 10' are fixed to the long grooves provided in the tables 7, 7' with screws, they can be easily adjusted to the pitch of the S spring stretched between the holders 10, 10'. . In this embodiment, since there are two pairs of holders 10 and 10', it is possible to stretch two sets of S springs at the same time.

Joint arm 13,1 of link mechanism 12
The lower ends of 3' are connected to sliders 5, 5' by bolts 15, 15', respectively. bolt 15,
15' denotes the joint arms 13, 13', the through holes 6, 6 of the sliders 5, 5', the grooves 4, 4 of the guide rails 2, 2, and the guide plates 8, 8 of the tables 7, 7'. The bolts 16, 16' are connected to the through holes 6, 6 of the sliders 5, 5' and the grooves 4, 4 of the guide rails 2, 2. , communicate with bolt holes 9, 9 of guide plates 8, 8 of tables 7, 7', and are tightened with nuts.

With this tightening, the joint arms 13, 13'
The sliders 5, 5' and the tables 7, 7' slide integrally along the guide rails 2, 2, respectively. The upper ends of the joint arms 13, 13' are connected by an upper base 14.

Springs 17, 17 are tensioned between the bolts 15 and 15' and act in a direction to draw them together. A stopper 18 is installed below the upper base 14 between the rail bodies 3 and 3'. The stopper 18 is composed of a base 19 and a threaded cylinder 20 that can be adjusted vertically with respect to the base using screw means.

The operation of the device of the present invention will be explained.

First, as shown in FIG.
0' to the distance between the parts of the S spring that you want to stretch, and in this state hang multiple S springs between the holders 10 and 10'.
1 and 11'. The plurality of S springs are locked to the holders 10, 10' simply by sequentially inserting them into the grooves of the holders 10, 10' from above. The distance at which the link mechanism 12 is expanded is adjusted by the height of the stopper 18. In this state, if a downward force is applied to the upper base 14 of the link mechanism 12, the tables 7, 7' will be moved by the springs 17, 17.
The upper base 14 is separated from the stopper 18 until it comes into contact with the stopper 18. With this, holder 1
The S spring between 0 and 10' is stretched, and the other S springs are not tensioned and are not stretched. When the desired stretching of the S spring is completed, the S spring is removed from the holder 10, 10', the force applied to the upper base 14 is removed, and the tables 7, 7' are returned to their original positions by the force of the spring 17. to return to. Stopper 18 is upper base 14
Since the upper base 14 is located below the upper base 14, the height of the stopper 18 limits the degree of descent of the upper base 14. The height of the stopper 18 determines the degree of extension of the S spring. Further, while the S spring is being stretched, the non-stretched portions of the S spring are prevented from being deformed in the lateral direction by the guides 11, 11'.

As you can see from the above explanation, Atsupah Base 14
Of course, only one table can slide between the rails by lowering the table.

Since the present invention has the above-mentioned configuration, it is easy to hang the S spring, and the table can be easily separated by the operation of the link mechanism, thereby making it possible to stretch the S spring. Furthermore, the guide allows the enlarging operation to be performed while preventing the non-enlarged portion from being deformed in the lateral direction. Moreover, the structure of the device is simple and can be provided at low cost.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the S spring, Fig. 2 is a plan view of the S spring in an expanded state, Fig. 3 is a perspective view of the device of the present invention, and Fig. 4 is a front view of the device of the present invention, showing a part of it. A longitudinal view, Figure 5 is a left side view of Figure 4,
FIG. 6 is an exploded perspective view of a part of the present invention;
FIG. 7 is a plan view showing a state in which the S spring is suspended from the holder. 7, 7'... Table, 17... Return spring, 12... Link mechanism, 10, 10'...
Holder, 11, 11'...Guide.

Claims (1)

[Scope of utility model registration request] At least one table is provided so as to be movable toward and away from the other table, a return spring is provided between the two tables so as to bias the tables in the direction in which the two tables approach each other, and a link mechanism is provided between the two tables. , and both tables are each provided with a holder for hanging the S spring, and a stepped guide extending in the stretching direction from the vicinity of the holder to prevent deformation of the non-stretched part of the S spring. Spring enlarger.