JP3373159B2 - Method and apparatus for forced deterioration of seat belt device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a forced deterioration of a seat belt device which reproduces a deteriorated condition of the seat belt device in order to evaluate the winding durability of a webbing of a seat belt device mounted on a vehicle such as an automobile. A method and apparatus.

[0002]

2. Description of the Related Art Generally, in a three-point type seat belt device mounted on an automobile, the retractability of the webbing by the retractor is deteriorated due to the deterioration of the sliding property between the webbing and the through anchor due to deterioration over time.

One of the causes of the decrease in slipperiness between the webbing and the through anchor is that the webbing itself deteriorates over time due to the effects of high temperature, low temperature, ultraviolet rays, harmful atmosphere in the vehicle, and the like. Another example is that the surface treatment agent for webbing (which contributes to slipperiness) peels off under the influence of high temperature, low temperature, ultraviolet rays, harmful atmosphere in the vehicle, and the like. Furthermore, the peeled surface treatment agent may become dirty and adhere to the webbing surface.

Conventionally, the evaluation of the winding durability of the webbing of the three-point type seat belt device is carried out by subjecting the webbing to a forced deterioration treatment with time due to high temperature / low temperature / ultraviolet rays, a harmful atmosphere in the vehicle, and the like. It is done by comparing sex.

[0005]

However, in the above-described conventional evaluation method, since the forced deterioration treatment due to high temperature / low temperature / ultraviolet rays / harmful atmosphere in the vehicle is a temporal treatment, it takes several days or more until the evaluation result is obtained. There is a problem that it takes a long time of several weeks.

An object of the present invention is to provide a method and a device for forcibly deteriorating a seat belt device which can obtain a sample having a deterioration tendency similar to that actually deteriorated with time in an extremely short time.

[0007]

The above object of the present invention is a holding means for holding the retractor, the through anchor, and the webbing in substantially the same positional relationship as when the vehicle is mounted, and in a substantially same state as the non-use state. Remove the webbing from the retractor
A fixed amount is pulled out, and it is almost in the same state as the unused state
Webbing pull-up and take-up means to take up to litcrater
And a stain imparting means for imparting stains to the webbing,
It is achieved by the forced deterioration device of the seat belt device . Further, the above object of the present invention is to provide a retractor and a through-hole.
Position the tanker and webbing in the same position as when mounted on the vehicle.
A webin that is held in a clerk and is in almost the same state as when not in use
Pull out a certain amount from the retractor and
Take it up to the state almost the same as the usage state,
Forcing the seat belt device to add dirt to the webbing
It is achieved by a deterioration method .

[0008]

In the forced deterioration device for a seat belt device according to the present invention, the holding means holds the retractor, the through anchor, and the webbing of the seat belt device in substantially the same positional relationship as when the vehicle is mounted. The webbing pull-out and take-up means removes the webbing that is in the same state as the unused state.
Pull out a certain amount from the lactate and
Let the lit clutter wind up to almost the same condition. Staining
Means keep the webbing pulled out in place.
Give.

Predetermined position of webbing by the stain applying means
Contamination can be imparted to the web by the webbing pull-out and winding means.
It is performed every predetermined number of times of bing withdrawal. For example, at least once every 20 webbing draw-outs by the webbing draw-out and winding means, preferably once every 2 times.
It is desirable to carry out each time, particularly preferably every time.
The stain applying means may be configured such that the member carrying the dirt is driven to contact the webbing to apply the dirt, or the member carrying the dirt contacts the webbing to apply the dirt. Good. Further, the operator himself may directly grab the webbing with his palm and apply the oil or the like on the palm. As the predetermined position of the webbing to be stained,
It is in the vicinity of the through anchor when the retractor is wound with the webbing until it is not in use, preferably in the range of about 0 to 40 mm on the retractor side of the through anchor, and the surface on the side in contact with the through anchor is preferable.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic side view showing a forced deterioration device of a seat belt device according to an embodiment of the present invention, and FIG. 2 is an enlarged plan view of a main part of the forced deterioration device of FIG. FIG. 3 is a schematic perspective view showing an occupant restraint state when a three-point seat belt device, which is a target for reproducing the deteriorated condition with time by the forced deterioration device of FIG. 1, is mounted on a vehicle.

First, a three-point seat belt device 10, which is a target of reproducing a deterioration state over time by a forced deterioration device 30 according to an embodiment of the present invention, will be described with reference to FIG.

Three-point seat belt device 1 mounted on a vehicle
At 0, the webbing 11 in which the base end 11a is wound around the retractor 12 is inserted through the through anchor 14 supported by the center pillar 13 and the through trunk 16 detachably fitted to the buckle 15, and the tip end 11b. Is locked to an anchor plate 18 fixed to the vehicle body 17.

The webbing 11 is a seat belt device 10
When not in use, it is in a state of being guided substantially vertically from the retractor 12 to the through anchor 14 along the center pillar 13 (hereinafter, referred to as a non-use state). Webbing 1
When the seatbelt device 10 is used, the occupant pulls the slutang 16 toward the buckle 15 and pulls it out from the retractor 12 by a predetermined amount, and the slutang 16 is engaged with the buckle 15. This makes the webbing 11
Seated on the seat 20 while crossing the front of the seat back 19 diagonally downward and substantially horizontally along the base end of the seat back 19 (the state shown in FIG. 3, hereinafter referred to as the occupant restraint state). An occupant (not shown) is restrained on the seat 20.

Referring to FIGS. 1 and 2, in a forced deterioration device 30 which is an embodiment of the present invention, the webbing 11 of the seat belt device 10 (see FIG. 3) held by a seat belt holding frame 31 is With the operation of the webbing pull-up and take-up air cylinder 33, the pulling-out and winding-up operations from the retractor 12 are repeated, and the stain imparting roller 38 imparts stains.

The seat belt holding base 31 includes the base plate 3
2 is provided upright on the seat belt device 10. The retractor 12, the through anchor 14, and the webbing 11 of the seat belt device 10 are
Maintain the same positional relationship as when mounted on the vehicle. That is, the seatbelt holding base 31 supports the retractor 12 wound with the webbing 11 near the base end (lower end in FIG. 1) and near the upper end in FIG. 1 with a predetermined vertical distance from the retractor 12. The through anchor 14 having the webbing 11 inserted therethrough is supported, and the webbing 11 is held in a state of being wound around the retractor 12 (a state substantially the same as the non-use state) while leaving a portion from the retractor 12 to the through anchor 14. .

Air cylinder 33 for pulling out and winding webbing
Are supported on the air cylinder support base 34 in a predetermined posture, and the webbing 11 (in the vertical direction in FIG. 2 is sandwiched between the tip ends of the cylinder rod 33a of the mounting plate 35 fixed to the tip end of the cylinder rod 33a. In this embodiment, two are connected. Ie webbing 11
Are fixing members 3 fixed to the mounting plate 35, respectively.
6 (in place of the router 16) and folded back, and the folded back portion is fixed to a portion between the through anchor 14 and the fixing jig 37. The air cylinder support base 34 is fixed on the base plate 32 in a predetermined positional relationship with the seat belt holding base 31.

Air cylinder 33 for pulling out and winding webbing
As the cylinder rod 33a moves back and forth from the cylinder body 33b, the webbing 11, which is in a state substantially the same as the non-use state, is pulled out from the retractor 12 by a predetermined amount a to a state substantially the same as the occupant restraint state. The webbing 11 again until it is almost in the same state as the non-use state,
That is, the retractor is wound up by a predetermined amount a.

The stain imparting roller 38 is arranged on the lower surface side (sliding surface side with the through anchor 14) of the webbing 11 in FIG. 1, and the surface thereof is impregnated or adhered with dirt such as oil, dust or an adhesive. . The dirt imparting roller 38 is arranged so as to be separable from and in contact with the webbing 11 by a drive means (not shown) as indicated by an arrow A so as not to hinder the movement of the cylinder rod 33a during the webbing withdrawal and winding. It is retracted from the moving area of the cylinder rod 33a. The soiling roller 38 is moved to a position where it comes into contact with the lower surface of the webbing 11 in FIG. 1 in FIG. 1 before or after the webbing withdrawing operation is completed, and comes into contact with the webbing 11 to clean the webbing 11. Transcribe.

With respect to the frequency with which the stain imparting roller 38 is brought into contact with the webbing 11, it is preferable to contact the webbing 11 at least once before the number of times the webbing is drawn out reaches 20 times.
Further, it is preferable to contact the stain imparting roller 38 once with respect to the number of times the webbing is pulled out twice, and it is particularly preferable to contact the stain imparting roller 38 each time the webbing 11 is pulled out.

The operation of this embodiment will be described. In the forced deterioration device 30, the retractor 12 wound with the webbing 11 is supported in the vicinity of the base end portion of the seat belt holding base 31, and the through anchor 14 having the webbing 11 inserted therein has the through anchor 14 of the seat belt holding base 31. It is supported near the upper end. At this time, the webbing 11 is the retractor 1
It is held in a state substantially the same as the non-use state in which it is wound around the retractor 12 except for the portions from 2 to the through anchor 14. Next, the webbing 11 is repeatedly drawn a predetermined amount a from the retractor 12 and taken up by the webbing draw-out air cylinder 33 a predetermined number of times. When the webbing 11 is pulled out by a predetermined amount a, the webbing 1
1, the stain imparting roller is brought into contact with the lower surface in FIG. This makes the webbing 11
Stains are transferred from the stain imparting roller to the contact portion.

The dirt transferred to the webbing 11 becomes a mixture with the surface oil agent of the webbing 11 and the webbing 1
1 or a predetermined position of the through anchor 14 due to the squeezing action associated with the drawing and winding operation.
The ratio of the mixture of the dirt attached to the webbing 11 and the surface oil agent of the webbing 11 transferred from the surface of the webbing 11 to the through anchor 14 is determined by the surface characteristics of the webbing 11 and the material of the sliding surface between the through anchor 14 and the webbing 11. It depends on the characteristics. That is, for example, when the material of the through anchor 14 is PA6, most of the mixture is transferred to the through anchor 14. Also, through anchor 1
When the material of No. 4 is POM, most of the mixture remains on the surface of the webbing 11.

Since the mixture efficiently accumulated has a high friction coefficient, its action reduces the windability of the webbing 11 by the retractor 12. As a result, the actual webbing 11 can be processed in an extremely short time as compared with the conventional aging treatment.
It is possible to obtain a sample close to the tendency for the winding property to decrease, and it is possible to reliably evaluate the winding durability of the webbing 11.

As described above, according to the above-described embodiment, the webbing pull-out and take-up air cylinder 33 is provided with the webbing 11
While the drawing and winding of the predetermined amount a from the retractor 12 is repeated a predetermined number of times, the stain imparting roller pulls and winds the webbing 11 on the lower surface in FIG. The webbing 11 is contacted each time to transfer the dirt to the webbing 11. Therefore,
The high-friction soil mixture can be accumulated in the webbing 11 or the through anchor 14 in a short time, and a sample having a deterioration tendency very close to that actually deteriorated with time can be obtained in an extremely short time. It is possible to secure a large correlation with the deterioration tendency with the deterioration with time. Thereby, the reliability of evaluation can be improved.

In the above embodiment, the amount of pulling-out a of the webbing 11 by the webbing pull-out air cylinder 33 is a.
Was set to a = 500 mm in accordance with the amount of withdrawal in the actual vehicle, but in practice it may be about a = 1000 mm,
Alternatively, the withdrawal amount may be more or less depending on the applicable vehicle type or the like.

In the above embodiment, the two webbings 11 are vertically symmetrical in FIG. 2 with the tip of the cylinder rod 33a of the mounting plate 35 fixed to the tip of the cylinder rod 33a of the air cylinder 33 for pulling out and winding the webbing. , But is not limited to this. That is, for example, four webbings 11 may be connected two at a time in a vertically symmetrical position in FIG. 2 with the tip of the cylinder rod 33a of the mounting plate 35 interposed therebetween, or only one webbing 11 may be connected. It may be connected to the cylinder rod 33a. By using different types of webbings as the two webbings, it is possible to easily compare two different types of webbings. Further, if the same webbing is used and there are two types of through anchors, it becomes possible to compare two through anchors of different types.

Further, in the above embodiment, the surface of the dirt imparting roller is impregnated or adhered with the dirt, and the dirt is transferred by contact and rolling with the webbing 11, but the invention is not limited to this. That is, for example, dirt may be attached to the webbing 11 by jetting or the like.
1 may be grasped by hand to give dirt.

[0027]

As described above, according to the present invention, the webbing pull-out and take-up means retracts the webbing in a state substantially the same as the non-use state to a state substantially the same as the occupant restraining state.
The same amount as when not in use.
Let it roll up to the state of rittokurata and add dirt
Means cleans the webbing in place in place.
Give. Therefore, a sample having a deterioration tendency similar to that actually deteriorated with time can be obtained in an extremely short time.

[Brief description of drawings]

FIG. 1 is a schematic side view showing a forced deterioration device for a seat belt device according to an embodiment of the present invention.

FIG. 2 is an enlarged plan view of a main part of the forced deterioration device of FIG.

FIG. 3 is a schematic perspective view showing an occupant restraint state when a vehicle is equipped with a three-point seat belt device which is a target for reproducing a deteriorated state over time.

[Explanation of symbols]

10 3-point seat belt device 11 webbing 12 retractors 14 Through anchor 15 buckles 16 Slutung 18 anchor plate 20 sheets 30 forced deterioration device 31 Seatbelt holder 32 base plate 33 Web cylinder for drawing and winding 34 Air cylinder mount 38 Staining roller

Claims (14)

(57) [Claims] 1. A retractor, the through anchor and webbing, and holding means for holding the substantially same positional relationship and when the vehicle mounted with webbing in the non-use state and substantially the same state Ritoraku
The same amount as when not in use.
A webbing drawer that allows the reel to wind up to the first state
It comprises a winding means and a stain applying means for imparting dirt to the webbing.
Seat belt device forced deterioration device. 2. The stain applying means is provided for the webbing.
The stain is applied every predetermined number of times of withdrawal.
Forced deterioration device. 3. The stain imparting means before use
Before the retractor winds the webbing
Add stains to the webbing near the through anchor.
Forced deterioration equipment according to claim 1 or 2, characterized in that
Place 4. The stain applying means is the through anchor.
From the retractor side of the
A stain is imparted to the edging.
The forced deterioration device according to any one of 3 above. 5. The stain imparting means is a webbing sleeve.
-The feature is that dirt is added to the side that contacts the anchor.
The forced deterioration device according to any one of claims 1 to 4. 6. The dirt imparting means is a portion carrying dirt.
The material is brought into contact with the webbing to impart dirt.
The forced deterioration according to any one of claims 1 to 5, characterized in that
apparatus. 7. A retractor, a through anchor and a web.
The webbing is held in a position that is substantially the same as when mounted on the vehicle, and the webbing that is in the same state as when not in use is retracted.
The same amount as when not in use.
The strength of the seat belt device that winds the lithocrater up to one state and stains the webbing.
Control deterioration method. 8. The step of applying the stain comprises the web
Characterized by being executed every predetermined number of times
The forced deterioration method according to claim 7. 9. The step of applying the stain is in a non-use state.
Through when retracting the webbing up to retractor
Characterized by adding dirt to the webbing near the anchor
The forced deterioration method according to claim 7 or 8. 10. The step of applying the stain comprises a through
In the range of 0 to 40 mm on the retractor side of the tanker
Ebbing is provided with dirt, The said 7-characterized.
9. The forced deterioration method according to any one of 9 above. 11. The step of applying the stain comprises a webbing
Stain on the side that contacts the through anchor
Forced deterioration according to any one of claims 7 to 10,
Method. 12. The step of imparting stains bears stains.
Contact the held member with the webbing to add dirt.
Forced inferiority according to any one of claims 7 to 11, characterized by
Method. 13. The step of applying stains comprises spraying stains.
Characterized by being attached to the webbing by firing
The forced deterioration method according to any one of claims 7 to 11. 14. The step of applying the stain comprises a webbing
A contract characterized by directly gripping the grip with the palm and applying dirt
The forced deterioration method according to any one of claims 7 to 11.