JP2000335367A - Deflecting device for safety belt - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light structure in which a deflecting roller is prevented from being bent even subjected to a large load, and the weight is optimum irrespective thereof. SOLUTION: A deflecting device for a safety belt in an automobile has a curved piece comprising a metal plate member 10 which holds a deflecting roller 16 to be rotatably supported, and is folded in a U-shape around a support shaft of the deflecting roller 16, a side leg piece 11 of the metal plate member 10 is coupled with a tank-like piece 17 to cover a lower part of the deflecting roller 16 at a free gap, and supported in a flexible supporting part to be inserted in a reception part of the side leg piece 11 of the metal plate member 10, and the deflecting roller 16 is brought into contact with the tank-like piece 17 when a load is received.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt turning device for a safety belt device in a motor vehicle, which has a curved piece for holding a rotatably supported turning roller, and the curved piece supports the turning roller. It consists of a frame-shaped metal plate member which is folded in a U-shape around the shaft and which allows an undamped passage of the belt, the support shaft for the deflecting roller being formed on the side of the curved piece by bending. Supported in the receiving section
The present invention relates to a safety belt deflecting device in which a deflecting roller that is located between side leg sides of a curved piece and fits on a support shaft projects in a radial direction with respect to the side leg side of a metal plate member.

[0002]

BACKGROUND OF THE INVENTION A turning device having the above-mentioned characteristics is known from DE 197 29 759 A1 for a turning fitting which can be mounted on a vehicle body. The curved piece forming the turning bracket is formed by bending a metal plate cut piece having a flat frame-like notch formed in the center.
Formed in layers. Due to the frame shape of the sheet metal piece, the bending process creates a flat area closed at the side leg sides and at one end, in which area a mounting opening for a curved piece used as a turning bracket is formed. Therefore, the curved piece has a U-shape, and the support shaft for the turning roller rotatably supported by the curved piece is held in a receiving portion formed in a bending range of the side leg side. Since the deflecting roller has a diameter greater than the bending range of the side leg sides of the curved piece, the belt extending around the deflecting roller between the side leg sides will contact the curved piece so as to rub it. Instead, the deflecting roller is rotatably provided on a support shaft that is directly held in the receiving portion of the side leg side.

[0003] In the known deflecting devices, although a slight roller friction is achieved with respect to the belt passed through the fittings, there is a danger that the deflecting rollers will bend when a heavy load on the belt is applied, so that in practice the deflecting of the belt will occur. A turning bracket with a solid turning bridge forming the part is mainly used, on which the belt runs with sliding friction. Suitable loads on the deflecting rollers also occur, in particular, when using the deflecting device in conjunction with a belt tensioning device, and also when using a belt winder with a force limiting device. This is because both belts not only act on the shaft of the deflecting roller with a suitable load on release, but also pass through the deflecting device at a high relative speed.

[0004]

The problem underlying the present invention, therefore, is to improve the deflecting device which has the characteristics mentioned at the outset and which gives the rolling friction for the belt, so that the deflecting roller bends even under heavy loads. In order to provide a light structure that is prevented from weighing and nevertheless optimized in weight.

[0005]

The solution to this problem, including the advantageous configuration and development of the invention, emerges from the claims that precede this description.

In the basic idea of the present invention, the side legs of the metal plate member are joined to a tank-like piece surrounding the turning roller from below with a play gap, and the support shaft is connected to the side of the metal plate member. Consideration is provided that the deflecting roller is supported in a flexible support point inserted into the receiving part of the leg side so that the deflecting roller bears against the trough-shaped piece. As an advantage with the present invention, the deflecting roller, when under load, descends for its support at the flexible support point, and the deflecting roller is then supported by a trough that is connected to the curved piece and thereby braked. Or rotation is prevented. That is, the consequent stoppage of the deflecting rollers advantageously prevents the belt from sliding into one of the corners of the deflecting device when the belt is pulled through the deflecting device at a high relative speed during the tensioning or force limiting process.

[0007]

According to the embodiment of the present invention, since the tank-shaped piece is a constituent part of the metal plate cutting piece used for manufacturing the metal plate member, the metal plate member is folded into a curved piece. The tank-shaped piece may be included in the curved piece, or the tank-shaped piece may be configured as a separate structural part, and may be attached to the bending range of the side leg side of the metal plate member. In particular, when the tank-like piece is integrally formed with the metal plate member, the tank-like piece has a plastic coating on a surface facing the turning roller,
If the trough is configured as a separate structural part, the trough can be made entirely of plastic.

According to an embodiment of the present invention, when the turning roller is subjected to a load and the braking effect of the tank is enhanced, the surface of the tank facing the turning roller increases the friction. , For example, protruding bumps or other irregularities on the surface of the trough.

In an embodiment according to the invention, it can be provided that the support point is made of plastic and is clipped into the receiving part on the side leg side of the metal plate member, so that it can be simplified. In this way, the desired production is possible. The support points make it possible to lower the deflecting rollers into the troughs provided for the curved pieces.

According to an embodiment of the invention, the support shaft and the deflecting roller are integrally formed, so that, for example, the support shaft is formed by a shaft neck formed integrally with the deflecting roller, or the deflecting roller is sleeve-shaped. Can be mounted on the support shaft, in which case a mating connection between the deflecting roller and the support shaft can be provided. because,
This is because the support shaft is rotatably held at the support point, where as smooth support of the support shaft with the turning rollers as possible is important.

According to an embodiment of the invention, if the support shaft and the deflecting rollers are considered to consist of plastic, a diverting device having a belt winder with a force limiting device that operates in a progressive manner is used. In this case, the turning roller can be made of steel. This is because, during the force limiting phase, a high relative speed appears between the deflecting roller and the belt, which can cause melting of the plastic or belt as otherwise used material.

According to the embodiment of the present invention, the side leg side of the metal plate member has a flat portion in the bent portion with respect to the periphery of the turning roller, so that the belt is formed of a curved piece. Can be considered so as not to rub in place.

In order to improve the belt guidance, a metal plate member defines a through opening for the belt facing the tank-like piece.
In the area of the layer, there is a belt guide bar projecting parallel to the surface of the deflecting roller, the side leg side forms a side belt guide on the side of the through opening, and the belt guide bar is a metal plate Further considerations can be given as if they were bent out of one piece.

The deflecting device thus constructed is first mounted on a fixed part of the vehicle, as described in DE 197 29 759 A1 for the known deflecting hardware. It can be used as a turning metal fitting. It is also possible to use the deflection device in combination with the buckle tongue. This is because, in the case of a normal three-point safety belt, the belt turns from the stool belt to the shoulder belt at the buckle tongue, so that the belt turns smoothly even at this point, especially when the belt is worn or removed. Because it is done.

The drawings show an embodiment of the invention,
This is described below.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A turning device, shown generally in FIG. 1, is a curved piece 1 made of a frame-like metal plate which is folded according to the disclosure of DE-A-197 29 759.
0, the side leg pieces 11 to be formed
1 is used as a turning fitting to be attached to a portion fixed to a vehicle, since a receiving portion 12 for holding the fixing member 6 is formed, and a mounting hole 14 is formed in the two-layer area 13. Can be. A deflecting roller 16 is provided between the side leg sides 11 and supported as described later. The side leg side 11 is flattened into the bent portion thereof with respect to the outer periphery of the deflecting roller 16. With the portion 24, a belt (not shown) guided around the deflecting roller 16 does not come into contact with the curved piece 10.

The structure of the turning device can be clearly seen in detail from FIG.
It can be seen that they are joined by. To the receiving unit 12,
A support point 20, preferably made of plastic and having a support sleeve 25 facing into the curved piece 10, can be inserted and clipped onto the curved piece 10. A supporting shaft 15 is provided for holding the deflecting roller 16, and the deflecting roller 16 formed in a sleeve shape is fitted on the supporting shaft 15 so that the deflecting roller 16 comes between the side leg sides 11. The support shaft 15 projects laterally beyond the deflecting roller 16 into the lateral leg side 11, and a support shell 26 having a shaft neck 27 can be fitted at both ends of the support shaft 15.
The shaft neck 27 engages the support sleeve 25 of the support point 20,
Thus, the support shaft 15 is smoothly supported. Curved piece 16
The arrangement of the tank-like piece 17 to the tank-like piece 17 and the turning roller 16
As shown in FIG. 3, the gap 18 is selected so that a play gap 18 is formed between the turning roller 16 and the turning roller 16 in a normal operation.
Can be easily rotated. The support shaft 15 including the support point 25 and the support shell 26 which bends when a load is applied,
If these consist of plastic, the turning roller 1
This turning of the deflecting roller 16 is possible until the brake 6 contacts the tank 17 in a braking manner.

To improve the guiding of the belt, a tank 17
An upper belt guide bar 22 is provided to face the belt opening and partition the belt through-opening above the diverting roll 16.
0 is formed at the side leg side 11.

The subject matter of this document disclosed in the foregoing description, claims, abstract and drawings, individually or in any combination, is important in practicing the invention in various embodiments. is there.

[Brief description of the drawings]

FIG. 1 is a perspective view of a turning device.

FIG. 2 is an exploded perspective view of the turning device of FIG.

FIG. 3 is a front view of the turning device of FIG. 1 with a part cut away.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Metal plate member 11 Side leg side 12 Receiving part 15 Support shaft 16 Turning roller 17 Tank-shaped piece 18 Play space 20 Supporting point

Claims (16)

[Claims] 1. A belt turning device for a safety belt device in an automobile, comprising a curved piece for holding a rotatably supported turning roller, wherein the curved piece is U-shaped around a support shaft of the turning roller. The support shaft for the turning roller is supported in a receiving portion formed on the side leg side of the bending piece by bending, and is formed of a frame-shaped metal plate member that allows the belt to pass through without being braked. A deflecting roller which is located between the side leg sides of the curved piece and fits on the support shaft in a radial direction with respect to the side leg side of the metal plate member; The side (11) is connected to a tank-like piece (17) surrounding the turning roller (16) from below with a play (18), and the support shaft (15) is connected to the side of the metal plate member (10). Flexible support point inserted into receiving part (12) of leg side (11) A turning device for a safety belt, characterized in that the turning roller (16) is supported in the (20) and comes into contact with the tank-shaped piece (17) under load. The tank-like piece (17) is made of a metal plate member (10).
The turning device according to claim 1, wherein the turning device is a component part of a metal sheet cut piece used for manufacturing the metal plate. 3. The tank-shaped piece (17) is formed as a separate structural part, and is attached to a bent area of a lateral leg side (11) of a metal plate member (10). A turning device according to claim 1. 4. The tank-shaped piece (17) is provided with a turning roller (16).
The turning device according to claim 2 or 3, characterized in that it has a plastic coating on the surface facing towards (1). 5. The turning device according to claim 3, wherein the trough (17) is made of plastic. 6. The deflecting device according to claim 2, wherein the surface of the tank-like piece facing the deflecting roller has a configuration for increasing friction. apparatus. 7. The support point (20) is made of plastic and is clip-fitted to a receiving part (12) of a lateral leg side (11) of a metal plate member (10).
A turning device according to claim 1. 8. The device according to claim 1, wherein the support shaft and the deflecting roller are integrally formed.
A turning device according to one of the preceding claims. 9. The deflecting roller (16) is formed in the form of a sleeve and is fitted on the support shaft (15) and is fitted and connected to the support shaft (15). A turning device according to one of the preceding claims. 10. A support shaft (15) and a deflecting roller (1).
10. The deflecting device according to claim 1, wherein 6) is made of plastic. 11. The deflecting device according to claim 1, wherein the deflecting roller is made of steel. 12. A side leg (1) of a metal plate member (10).
12) A deflecting device according to one of the preceding claims, characterized in that 1) has, at its fold, a flat part (24) which is retracted around the turning roller (16). apparatus. 13. The tank-shaped piece (1) is provided with a metal plate member (10).
A belt guide beam (22) projecting parallel to the surface of the deflecting roller (16) is provided in a range of two layers defining a through-opening (21) for a belt facing the belt (9). The side (11) forms a lateral belt guide (23) beside the through-opening (21).
A turning device according to one of the preceding claims. 14. The diverting device according to claim 13, wherein the belt guide bar (22) is integrally bent from the metal plate member (10). 15. The method according to claim 1, wherein the metal member is used as a turning bracket to be attached to a portion fixed to a vehicle.
A turning device according to one of the fourteenth aspects. 16. The diverting device according to claim 1, wherein the buckling device is used in connection with a buckle that can be inserted into the belt buckle as a component of the safety belt device.