JPS5940464B2 - Clamp device for safety belt - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a seat belt device, and particularly to a clamp device which doubles as a guide member for folding and guiding the belt at an upper position on the door opening side in a passive belt mechanism. It is something.

Conventionally, seatbelt retractors (1) usually employ an emergency locking mechanism, but if a strong pulling force is applied to the belt due to stretching or tightening of the belt web itself, the locking mechanism (this prevents the belt from being pulled out) Even if the drawer is locked, there is still a considerable amount of extension before the drawer is completely blocked, and the effect of the long-awaited lock is diminished.

In particular, this extension is unexpectedly large, and various mechanisms have been proposed to prevent it, but most of them cannot withstand the tensile force and either slip or break the belt. On the other hand, belts that can withstand tensile forces have the disadvantage that they are wedged tightly into the belt and do not separate, and that the belt must be returned by hand each time it is put back together, making it virtually inoperable. .

In view of the actual situation of clamping, it is an object of the present invention to correct the drawbacks of the known clamping devices and to ensure that the belt is prevented from being pulled out with a simple mechanism. A roller and a first restraining member that is pressed by the movement of the roller are disposed, and when a pull-out force of a predetermined value or more is applied to the belt f, the roller is moved to clamp the first restraining member to the belt, that is, a second restraining member. It is characterized by a structure in which the member is moved to the side to sandwich the belt.

Hereinafter, the specific content of the present invention will be further explained with reference to the attached drawings E and Embodiment F.

Figures 1 and 2 are schematic diagrams of the clamping device of the present invention, and the left and right side plates of a U-shaped substrate 1 are composed of left and right side plates 1a, 1b, a second restraining part, and a bottom plate 1c formed as a material. A vertical elongated hole 2 is bored through the upper part of the bottom plate 1, and a shaft 5 is inserted into the elongated hole 2 so as to be able to slide vertically in the vertical direction, and a roller 4 is mounted on the shaft. .

This roller 4 has one end fixed at a point 7 on the upper part of the base plate 1, and the other end of the biasing spring 6 is fixed to the shaft 5I. It serves as a guide roller.

On the other hand, the first restraining member 8 has a shaft 9, a guide surface 9a inclined in a direction opposite to the direction in which the belt B is pulled out, and a guide means l provided on the substrate 1. Therefore, you are advised.

The guide means (1 board 10, both side plates 1a, 1bI are formed facing each other, and consists of oblique elongated holes 3 that are inclined in the opposite direction to the direction in which the belt B is pulled out.

The upper part of the first restraining member 8 is formed into a wedge shape, and the long surface 8b serves as a surface for clamping the belt between it and the bottom plate 1c of the substrate 1, and usually has unevenness formed therein to ensure secure clamping. .

The wedge-shaped slope has no separate working relationship with the roller 4 when the roller 4 is located above, but the roller 4 moves downward against the spring 6f. At this time, the roller 4 is brought into contact and guided, thereby forming a diagonal contact pressure surface.

A plate-shaped spring 10 is attached to a rivet 11 on the lower surface 8c side of the first restraining member.
The shaft 9 of the first restraining member 8 is positioned at the uppermost position of the oblique hole 3 under normal conditions.

In the figure, reference numeral 12 indicates a bolt hole drilled in the substrate 11.

FIGS. 3 and 4 are explanatory diagrams showing the operation of the clamp device configured as described above, and FIG. 3 shows the normal drawn-out state.

That is, in this case, the shafts 5 and 9 together with the roller 4 and the restraining member 8 are located at the uppermost part of the elongated hole 2°3, and the roller jH
j The restraining member 81 does not apply any pressing action, therefore, a gap is formed between the restraining member 8 and the bottom plate 1c of the substrate 1 to allow the belt to pass through, and the belt) B is guided to the roller 4. ing.

Now, in the above state f, when a strong pulling force acts on the bell 2, the roller 4 moves downward against the thrust force 1 of the urging spring 6, and together with this, the first restraining member 8 along its slope, and therefore the restraining member 8
As shown in the figure, the shaft 9 moves along the oblique elongated hole 31, and between it, the uneven long surface 8b formed as a second restraining member, and the substrate 1c (the belt B is sandwiched and pulled out). (to prevent)

Note that when the abnormal pulling force that is stuck on the belt is released, the roller 4 and the restraining member 8 return to the normal state shown in FIG. 3 due to the urging force f of the respective urging springs 6 and 10.

The above explanation (4) is an example of the clamping device of the present invention, and the invention is limited to the illustrated example (J) without departing from the gist thereof (changes may be made at any time).
” Of course.

FIG. 5 shows an example in which the above-mentioned uninvented clamping device is applied to a passive belt device, in which the clamping device A is removed from the upper end of the open side of the door 14.

In the illustrated example, the inner lower part of the open side of the door 14 (the emergency shoe 1 which has been removed) - the belt 16 pulled out from the tractor 17 is installed in the inner upper part of the open side of the door 14. The roller of the clamping device A is used as a guide roller to extend to the inner side of the seat 15 provided inside the vehicle body 13 (the stalk 2 that has been cut off).
A construction is shown in which the tongue 181 is inserted through the buckle 19 on the upper part of the retractor 17, is folded back, and the pulled-out end is fixed at the part 23 of the belt part on the upper part of the retractor 17.

Of course, there is no problem in double winding the drawer end in the retractor 17 without fixing it.

In addition, it is possible to use not only the passive belt device f as shown in the figure, but also other passive belt devices (hereinafter, other passive belt devices). A suitable position can be taken at any time.

In Figure 5, 21, 22L! These reinforcing members are provided on the door side and the center pillar of the vehicle body, respectively, and engage with each other.

The clamping device of the present invention (having four or more configurations and being used as appropriate in conjunction with the retractor drawer) ensures that the belt is clamped once when a pulling force of more than a predetermined value is applied to the belt. The belt can be transmitted to the restraining member and clamped between the restraining member and the base plate to prevent the belt from extending, and an emergency lock (which has a remarkable effect of more completely ensuring the safety of the occupants) are doing.

Moreover, in the device of the present invention (Kobelt's tensile force f
Despite being able to withstand this, there is no troublesome biting like in the past, and it is easier to handle the original condition than one spring.
Since this return occurs, the operation is extremely smooth, and there is an advantage that suppression and release can be carried out appropriately.

Furthermore, the clamping device of the present invention (which also serves as a co-belt guide roller, has a simple configuration and is easy to downsize, and can be mounted at a location f).
It has the convenience of being able to be installed at any time without any restrictions.

[Brief explanation of drawings]

Figures 1 and 2 are front and side views showing an example of the clamp device of the present invention, Figures 3 and 4 are explanatory diagrams showing C4 operating states, The figure shows an abnormal situation. FIG. 5 (J is a schematic perspective view showing an example of the usage state of the clamp device of the present invention. 1... U-shaped board, la, lb...・Side plate, 1C... Bottom plate, 2, 3... Long hole,
4...Roller, 6...Roller tension spring, 8...Suppression member, 10...Suppression member thrust spring, 9a... ...Information surface.

Claims (1)

[Scope of Claims] 1. A U-shaped substrate 1, and a pair of long holes 21 formed opposite to each other on both side plates 1a and 1bl of the substrate are slidably mounted on an axis,
In addition, normally it occupies a first position in which the belt B is normally guided within the elongated hole, and when a pulling force of more than a predetermined value is applied to the belt (IJ), the second device f moves within the elongated hole 2. a roller 4; a first restraining member 8 that moves together with the roller when the roller moves one second position;
When the restraining member is moved, the first restraining member is guided in the belt clamping direction f, and the guide means 3 is provided on the substrate 1, and together with the first restraining member, the belt is clamped and the drawer is pulled out. A safety belt clamping device consisting of a fixed second restraining member 1c that blocks the first restraining member 1c and a spring 10 that biases the first restraining member in a non-clamping position. 2. A first restraining member 8 that restrains the belt t-B. The clamp device according to claim 1, characterized in that the surface 8b is formed with one unevenness. Claims 1 or 2, characterized in that the plates 1a and lb) are oblique elongated holes 3 formed to face each other and in which the first restraining member is slidably mounted on the F axis. Clamping device as described. 4. The clamp device according to any one of claims 1 to 3, wherein the second restraining member is the bottom plate 1c of the U-shaped substrate 1.