JPH0330384Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a retractor device for winding up a string-like object.

<Prior Art> Conventionally, a retractor device including a reel biased by a spring in the winding direction has been used as a device for automatically winding up a string-like object.

For example, in so-called 3-door cars and 5-door cars, the space behind the rear seats is used as a trunk space.
The upper part is covered by a rear shelf that can be opened and closed, but when opening the tailgate and storing luggage in the trunk space or taking out luggage, it is necessary to open the rear shelf as well. Therefore, a string is used to connect the rear end of the rear shelf and a suitable position on the tailgate, and one end of the string is wound up by a retractor device equipped with a spring-biased reel to interlock the tailgate and rear shelf. It is desirable to

However, if the string is completely pulled out when the tailgate is fully opened, there is a possibility that the string etc. will break, so if there is room for the string to be drawn out further than when the tailgate is fully opened, Although the string becomes difficult to break, the height at which the rear shelf is lifted is determined by the balance between the rear shelf's own weight and the spring force of the reel, making it difficult to flip the rear shelf to a sufficient height. Therefore, if a sufficient traction force is applied in the middle of the string's unwinding length, the initial unwinding force becomes excessive.

<Problems to be solved by the invention> In view of the shortcomings of the prior art, the main purpose of the present invention is to be able to pull out the string with a relatively weak traction force at the initial stage of unwinding, and to avoid unwinding. It is an object of the present invention to provide a retractor device capable of generating a relatively strong winding force with sufficient margin.

<Means for Solving the Problems> According to the present invention, the object is to provide a retractor device for winding a string-like object, the retractor device having first and second reels and a long reel. a first string and a short second string, each of the first and second reels having spring means for biasing both reels in the winding direction; This is achieved by providing a retractor device characterized in that the first and second strings are provided with means for engaging the first and second strings with each other when the strings are retracted to a certain extent or more.

In particular, it is preferable that the first and second reels are arranged coaxially and in parallel with each other.

<Function> In this way, by using two reels that are individually torsionally biased, it is possible to increase the tension applied to the string at a position where the string is left unwound to a certain extent, without causing the towed object to sag. Since it is possible to provide some leeway in the stroke, the string is less likely to break.

In particular, by using the winding device as described above, even though the reel for winding the string rotates several times, it has an extremely simple structure.
It becomes possible to increase the tension applied to the string with a moderate stroke.

<Embodiments> The present invention will now be described in detail with reference to specific embodiments with reference to the accompanying drawings.

Figure 1 shows the rear part of an automobile in which the retractor device based on the present invention is applied as a winding device for interlocking the tailgate and the rear shelf.
However, the opening at the rear of the vehicle can be opened and closed. A trunk space 4 is defined on the floor behind the rear seat 3, and the upper part of the trunk space can be closed by a rear shelf 5 which can be vertically opened and closed by a hinge 6. One end 7 of a string 8 is attached to a suitable position near the lower end of the tailgate 1, and the other end of the string is wound around a winding device 9 fixed to the lower surface of the free end of the rear shelf.

2 and 3 show the winding device 9 shown in FIG. 1 in detail. The fixed shaft 10 inside the casing 9a attached to the side of the rear shelf 5 has a
The two sets of reels 11a and 11b are each supported by a shaft so that they can rotate independently, and each reel 11a, 11b is biased in the counterclockwise direction in FIG. Of these reels, the biasing force of the first reel 11a is relatively weak, and the biasing force of the second reel 11b is relatively strong.

The first reel 11a has a length corresponding to a full stroke, and the end on the rear shelf side of a first string 8, which has one end 7 attached to the tailgate 1, is wound around the first reel 11a. 11b has the length of the stroke after the point of change of the tension applied to the string,
A second string 8a is wound around.

A ring member 13 is fixed to the free end of the second string 8a, and this ring member 13 is attached to the casing 9.
The winding limit of the second string 8a is regulated by being locked to the string feeding opening 9b of the second string 8a. A first string 8 is slidably inserted into this ring.

A stopper 14 is fixed to the first string 8 at a position approximately equal to the entire length of the second string 8a from the end connected to the first reel 11a, and is engaged with the ring member 13 of the second string. It is made possible to do so.

Therefore, as the first string 8 is unwound from the first reel 11a, the torsion coil spring 12a applies a relatively small winding force determined by its spring constant, as shown in section H in FIG. reel 1
1a. However, when the first string 8 is let out to a certain extent from the first reel 11a, the stopper 14 of the first string 8 and the ring member 13 of the second string 8a engage with each other, and from then on, the second string 8a As a result, the spring restoring force exerted on the second reel 11b is added as a force for winding the first string 8.

Therefore, as shown by section G in FIG. 4, the winding force applied to the first string 8 is due to the spring restoring force of the torsion coil spring 12a of the first reel, as well as the spring restoring force of the torsion coil spring 12b of the other reel. A spring restoring force is added to the first string 8, and a spring restoring force determined by a spring constant obtained by combining these spring restoring forces is applied to the first string 8. Here, when the tailgate 1 is in the fully closed state, the winding force F is 0 or a value close to it, and the tailgate 1
When fully open, the two torsion coil springs 12a, 12
Although the action of b is added, both torsion coil springs 1
The force resisting the spring force of 2a and 12b is applied to the first string 8.
In addition, the relative dimensions of each part are determined so that the first string 8 can be reeled out together with the second string 8a from the reels 11a, 11b.

Next, the operation of the present invention will be explained with reference to FIG.

When the tailgate 1 is fully closed, it is in the position indicated by A, while the rear shelf 5 is in the horizontal position indicated by B. In this position, the first string 8 and the second string 8a are wound up to the maximum extent by the winding device 9. Therefore, when attempting to lift the tailgate 1 from this position, the first string 8
is the torsion coil spring 12a of the first reel 11a.
Only the spring force is applied, and the winding device 9 does not exert a large resistance force against the force that tries to lift the tailgate 1.

Next, when the tailgate 1 is lifted to the fully open position as shown by the solid line, the ring member 13 and the stopper 14 engage, and the first string 8 is considerably unwound from the winding device 9 together with the second string 8a. It will be. Therefore, the composite value of the spring force of the torsion coil springs 12a, 12b of both reels is applied to the first string 8, and the tendency of the rear shelf 5 to sag due to its own weight can be sufficiently countered. When attempting to open the tailgate 1, if a relatively heavy item is placed on the rear shelf 5, the first and second strings 8, 8a may be wound more than usual. It will be unwound from the device 9, but since there is a margin in the unwinding stroke of the winding device 9, problems such as excessive tension being generated in both strings 8 and 8a and heavy objects being turned over may occur. There is no.

Furthermore, when the tailgate 1 is in the fully open position, if the rear shelf 9 is further pushed upward, the take-up device 9 also has some margin in its payout stroke, so it can be raised to a substantially vertical position as shown by C. . Therefore, when a relatively large item is to be stored in the trunk space 4, the rear shelf 5 can be manually pushed up to such a vertical position, making it easy to load and unload the item.

In the above embodiment, the winding device 9 as a retractor device is applied as an interlocking device for the tailgate and rear shelf 5 of an automobile.
The present invention is not limited to the above embodiments, but can be widely applied in various embodiments.

<Effects of the invention> As described above, according to the invention, the winding traction force can be changed in stages with a relatively simple reel configuration, which has an extremely large effect in improving the handling of the retractor device. .

[Brief explanation of the drawing]

FIG. 1 is a side view showing the operation of a rear shelf interlocking structure to which a retractor device according to the present invention is applied. FIG. 2 is a longitudinal sectional view showing the function of the winding device used in FIG. 1. Figure 3 is the first
FIG. 3 is a partially cutaway plan view of the winding device used in the figure. Figure 4 shows the length of the string and the winding device 9.
It is a graph showing the relationship between winding force F and winding force F. 1... Tailgate, 2... Hinge, 3... Rear seat, 4... Trunk space, 5... Rear shelf, 6... Hinge, 7... One end, 8... First string, 8a... Third Second string, 9... Winding device, 9a...
...Casing, 9b...String outlet, 10...Fixed shaft, 11a...First reel, 11b...Second reel, 12a, 12b...Torsion coil spring,
13...Latching ring, 14...Stopper.

Claims (1)

[Claims for Utility Model Registration] (1) A retractor device for winding a string-like object, the retractor device comprising first and second reels, a long first string, and a short second string. the first and second reels each have a spring means that biases both the reels in the winding direction, and when the first string is unwound beyond a certain level, the first reel A retractor device characterized in that both the strings are provided with means for causing the and the second string to engage with each other. (2) The retractor device according to claim 1, wherein the first and second reels are arranged coaxially and in parallel with each other.