JP2001018695A - Passenger restraining device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a restraining device for an infant seat. SOLUTION: This passenger restraining device 1 provided with a built-in seat belt length adjusting mechanism 40 is fitted to a central part of a seat belt 4. The seat belt length adjusting mechanism 40 is formed of two retractors to be rotated in opposite direction each other, and since the drawing quantity L1 of a free end belt 6 and a drawing quantity L2 of a fixed end belt 10 are set at the same value, an impact shield 5 can be fitted to a nearly central part of a passenger by only drawing the seat belt 4 for installation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an occupant restraint device, and more particularly to an occupant restraint device capable of safely restraining an infant.

[0002]

2. Description of the Related Art Japanese Unexamined Utility Model Publication No. 6-49163 is a prior art relating to an occupant restraint system. This conventional technique will be described with reference to FIG.

[0003] As shown in FIG. 16, the occupant restraint system includes an auxiliary seat back 202 and a cushion portion 204 fixed on the upper portion of the auxiliary seat back 202. A long hole 205 is formed in the side of the arm 203 below the auxiliary seatback 202 in the side direction. Slot 20
5 is provided with a handle 206.

Referring to FIG. 16, the operation of the occupant restraint system when an infant is seated will be described. First, the infant is seated on the seat cushion 207 and is held by the main seat back 201. A person other than an infant, for example, the parent handles 206
Is turned to loosen a bolt (not shown), and the auxiliary seat back 202 is tilted forward with the bolt as a fulcrum. At this time, the passenger is carefully tilted forward so that the cushion portion 204 attached to the upper end of the auxiliary seat back 202 comes forward beyond the infant's head. When the cushion portion 204 reaches a position slightly above the knee, the auxiliary seat back 202 is moved in the vehicle front-rear direction along the long hole 205. When the auxiliary seat back 202 is moved to a position suitable for restraining the infant, the handle 206 is rotated to fix the auxiliary seat back 202.

[0005]

As described above,
According to the occupant restraint device of the related art, there is a problem that another person has to perform an adjustment operation in order to restrain the occupant at an appropriate position.

The present invention has been made in order to solve the above problems.
It is an object of the present invention to provide an occupant restraint device that does not require adjustment of a position or an angle.

[0007]

In order to achieve the above-mentioned object, a first aspect of the present invention provides a seat belt and a seat belt length adjusting mechanism provided at a position connected to the seat belt and restraining an occupant. And an impact shield for covering the seat belt length adjusting mechanism.

According to a second aspect of the present invention, there is provided an occupant restraint system according to the first aspect, wherein the seat belt length adjusting mechanisms have rotating bodies that rotate in opposite directions to each other. Occupant restraint device.

According to another aspect of the present invention, there is provided a seat belt having at least one end provided with a retractor and an impact shield connected to the seat belt and provided at a position for restraining an occupant. An occupant restraint device characterized in that:

In order to achieve the above-mentioned object, the invention according to a fourth aspect of the present invention provides a protection bar for restraining an occupant, a protection bar arm for connecting the protection bar and rotatable forward of the occupant; An occupant restraint device comprising a protection bar length adjusting mechanism that is extendable with respect to the protection bar arm.

According to a fifth aspect of the present invention, there is provided a protection bar for restraining an occupant, the protection bar being connected to the protection bar and being rotatable forward from the side of the vehicle to the occupant. An occupant restraint device comprising a bar arm.

[0012]

An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is an overall perspective view of one embodiment of an occupant restraint system according to one embodiment of the present invention. FIG. 1 shows an embodiment in which three occupant restraint devices 1 are provided on a bench type seat 2. The occupant restraint device 1 is set to restrain the occupant on the abdomen or knees as shown.

The occupant protection device 1 includes a seat belt 4, a seat belt length adjusting mechanism 40 connected to the seat belt 4 and provided at a position for restraining the occupant, and an impact shield 5 covering the seat belt length adjusting mechanism 40. It has. The seat belt 4 includes a free end belt 6 and a fixed end belt 10. One end of each of the free end belt 6 and the fixed end belt 10 is connected to a seat belt length adjusting mechanism 40. At the other end of the free end belt 6,
A tongue 7 is connected and can be detachably connected to a buckle 9 attached to a seat frame 3 or a free end belt fixing portion 8 attached to a vehicle floor (not shown). The other end of the fixed end belt 10 is connected to a fixed end belt fixing portion 11 attached to the seat frame 3.

The free end belt 6 and the fixed end belt 10 are biased in the winding direction by the seat belt length adjusting mechanism 40, and the amount L1 of the free end belt 6 and the amount L2 of the fixed end belt 10 are pulled out. Are set to the same amount, so that when the seat belt 4 is pulled out and worn, the seat belt length adjusting mechanism 40 can be fitted to substantially the center of the occupant's body. Outside the seat belt length adjusting mechanism 40, a seat belt length adjusting mechanism 4 is provided.
An impact shield 5 having a shape that covers 0 is provided. The occupant is directly restrained by the impact shield 5.

A method of mounting the occupant restraint device 1 shown in FIG. 1 will be described. After sitting on the seat 2, the occupant places the impact shield 5 including the seat belt length adjustment mechanism 40 on the abdomen or on the knee. At this time, the fixed end belt 10
Is connected to the seat belt length adjustment mechanism 40, so that the length L2
Drawn out. At the same time, the tongue 7 attached to the free end belt 6 is also pulled out from the seat belt length adjustment mechanism 40 by an appropriate length L1 (L2 and L1 are substantially equal).
In this state, the tongue 7 of the free end belt 6 is inserted into the buckle 9. As described above, the occupant restraint device 1 may be mounted in a sequential manner, or the above operations may be performed simultaneously using the left hand and the right hand.

Referring to FIG. 2, another embodiment will be described. FIG.
FIG. 2 is an overall perspective view of another example of the occupant restraint device according to one embodiment of the present invention. FIG. 2 also has the same configuration as that of FIG. A lock holder 12 is attached to an end of the fixed end belt 10 in FIG. An anchor 13 is attached to a seat frame (not shown). The lock holders 12 can be attached to the anchors 13 and all comply with international standards of the International Organization for Standardization (ISO). FIG.
The buckle 9 connected to the seat frame (not shown) of the seat 2 and the tongue 7 connected to the free end belt 6 can be connected.
May be replaced with an anchor and a lock holder corresponding to the international standard of the International Organization for Standardization (ISO).

The method for mounting the occupant restraint system 1 shown in FIG.
Compared to the buckle 9 and tongue 7
FIG. 2 is the same as FIG. 2 except that it is attached by an anchor and a lock holder corresponding to the international standard of the International Organization for Standardization (ISO), and therefore the description is omitted.

In both the embodiment of FIG. 1 and the embodiment of FIG. 2, the occupant restraint device can be set at a position where the occupant is restrained only by pulling out the occupant around the abdomen or on the knees. There is an excellent effect that an occupant restraint device that is not required can be provided.

The seat belt length adjusting mechanism 40 will be described with reference to FIGS. FIG. 3 is a schematic perspective view of an example of a seat belt length adjusting mechanism of the occupant restraint device according to one embodiment of the present invention, and FIG.
FIG. The free end belt 6 is connected to the rotating body 41 of the seat belt length adjusting mechanism 40, and the fixed end belt 10 is connected to the rotating body 42 of the seat belt length adjusting mechanism 40.
It is connected to. Rotating body 41 of seat belt length adjusting mechanism 40 and rotating body 42 of seat belt length adjusting mechanism 40
Are set to rotate in opposite directions. The details will be described below.

Rotating body 4 of seat belt length adjusting mechanism 40
1 has a free end retractor 20 to which the end of the free end belt 6 is connected. The free end retractor 20 includes a free end retractor shaft 21 rotatably supported by a bracket 26 and a free end retractor shaft 21. A free end retractor gear portion 28 provided at the end and a return spring 22 for applying a rewinding force to the free end belt 6 are provided.

Rotating member 4 of seat belt length adjusting mechanism 40
2 has a fixed-end retractor 23 to which the end of the fixed-end belt 10 is connected. The fixed-end retractor 23 is a fixed-end retractor shaft 24 rotatably supported by a bracket 26.
A fixed end retractor gear portion 29 provided at the end of the fixed end retractor shaft 24; and a return spring 25 for applying a rewinding force to the fixed end belt 10.

The free end retractor shaft 21 and the fixed end retractor shaft 24 are arranged in parallel with each other, and the free end retractor gear 28 and the fixed end retractor gear 29 are arranged so as to directly mesh with each other. And the fixed-end retractor 23 are set to rotate in mutually opposite directions. That is, the rotating body 41 of the seat belt length adjustment mechanism 40 and the seat belt length adjustment mechanism 40
Are set to rotate in mutually opposite directions.

Next, the operation will be described. When the free end belt 6 is not pulled out, the free end belt 6 and the fixed end belt 10 are both wrapped around the free end retractor 20 and the fixed end retractor 23 by the return springs 22 and 25. Next, when the free end belt 6 is pulled out, the free end retractor gear portion 28 rotates about the free end retractor shaft 21 against the spring force of the return spring 22. When the free end retractor gear 28 rotates, the fixed end retractor gear 29 connected to the free end retractor gear 28 rotates in conjunction with the return spring 25 against the spring force. When the fixed end retractor gear section 29 rotates, the fixed end belt 1
0 is drawn. Here, the free end retractor gear 2
If the number of teeth of the fixed end retractor gear portion 29 is set substantially equal to the number of teeth of the fixed end retractor gear portion 29, the amount by which the free end belt 6 is pulled out and the amount by which the fixed end belt 10 is drawn out can be set to be substantially the same. When the present invention is applied to a restraining device, an occupant can be restrained at an appropriate position only by pulling out a seat belt, and an excellent effect that an occupant restraining device that does not need to be adjusted in position and angle can be provided.

The rotating bodies 41 and 42 shown in FIG.
The passengers are arranged in the left and right directions of each other. in this way,
When the rotator 41 and the rotator 42 are arranged in the left-right direction of the occupant, there is an excellent effect that the occupant restraining device 1 that does not take up space in the occupant's front-rear direction can be configured.

Next, another embodiment will be described with reference to FIG. FIG. 5 is a perspective view of another example of the seat belt length adjusting mechanism of the occupant restraint device according to one embodiment of the present invention. FIG. 5 also has a configuration similar to that of FIG. The rotating body 41 and the rotating body 42 in FIG.
Are arranged in the front-rear direction of the occupant. That is, the free end retractor shaft 21 and the fixed end retractor shaft 24
Are arranged in parallel with each other and in the front-back direction of the occupant. By arranging the rotating body 41 and the rotating body 42 in the front-rear direction of the occupant in this manner, there is an excellent effect that the occupant restraining device 1 that does not take up space in the occupant's left-right direction can be configured.

Another embodiment will be described with reference to FIG. FIG. 6 is a schematic perspective view of another example of the seat belt length adjusting mechanism of the occupant restraint device according to one embodiment of the present invention. FIG. 6 also has the same configuration as FIG. 3, and therefore the description will be focused on the differences. Rotating body 41 and rotating body 4 in FIG.
2 are mutually arranged in the up-down direction of the occupant. That is, the free end retractor shaft 21 and the fixed end retractor shaft 24
Are connected to each other. By arranging the rotating body 41 and the rotating body 42 in the vertical direction of the occupant in this way, there is an excellent effect that the occupant restraining device 1 that does not take up space in the occupant's left-right direction and the front-back direction can be configured.

Still another embodiment will be described with reference to FIG. FIG. 7 is a perspective view of another example of the seat belt length adjusting mechanism of the occupant restraint device according to one embodiment of the present invention. FIG. 7 has the same configuration as that of FIG. The rotating body 41 and the rotating body 42 in FIG. 7 are arranged in the left-right direction of the occupant. That is, the free end retractor shaft 21 and the fixed end retractor shaft 2
4 are arranged in parallel with each other. Further, the rotating body 41 and the rotating body 42 are arranged apart from each other, and are connected to each other by crossing each other with the crossing transmission band 27 instead of the gear portion. In this manner, when the rotating body 41 and the rotating body 42 are arranged apart from each other in the left-right direction of the occupant, an impact shield that is long in the left-right direction of the occupant can be attached, and an occupant restraint device that can set a wide occupant restraining range can be provided. There is an excellent effect that it can be provided.

The occupant restraint system 1 shown in FIG. 8 will be described. FIG. 8 shows an occupant restraint system according to another embodiment of the present invention.
It is an overall perspective view of an example. The description will be focused on the configuration different from FIG. One end of the fixed end belt 10 is connected to the retractor 3.
0, and the other end is connected to the occupant restraint device 1. Note that the occupant restraint device 1 of FIG. 8 does not have a seat belt length adjustment mechanism. One end of the free end belt 6 is also connected to the occupant restraint device 1, and the other end is connected to the tongue 7. The length L3 of the free end belt 6 up to the tongue 7 and the occupant restraining device 1 is set to a length that fits substantially at the center of the occupant's body. Although not shown, instead of the tongue 7, as described with reference to FIG. 2, a lock holder corresponding to an international standard of the International Organization for Standardization (ISO) may be changed and attached.

The operation of the occupant restraint system 1 shown in FIG. 8 will be described. After sitting, the occupant pulls out the occupant restraint device 1 with the impact shield 5 against the rewinding force of the retractor 30 and inserts the tongue 7 into the buckle 9. Thereby, the occupant can be restrained.

In the occupant restraint apparatus 1 shown in FIG. 8, the length L3 of the free end belt 6 to the tongue 7 and the occupant restraint apparatus 1 is set to a length that fits substantially in the center of the occupant's body. This provides an excellent effect that it is possible to provide an occupant restraint system that does not require adjustment of the position and the angle.

As a modification, one end of the free end belt 6 and the occupant restraint device 1 may not be fixed. For example, if the seat belt 4 is applied with a frictional resistance so that the seat belt 4 can move within the impact shield 5 by applying a greater pulling force than the retractor 30 to the impact shield 5, the tongue 7 and the occupant can be provided. The length L3 of the free end belt 6 up to the restraint device 1 can be made variable, and the length can be appropriately adjusted to fit the occupant restraint device 1 to the best position of the occupant's body. It works.

The occupant restraint system 1 shown in FIG. 9 will be described. FIG. 9 is an overall perspective view of another example of the occupant restraint device according to another embodiment of the present invention. The description will be focused on the configuration different from FIG. One end of the seat belt 4 is connected to the retractor 3
1 is connected to the occupant restraint device 1 at substantially the center, and the other end is connected to the retractor 32. The occupant restraint device 1 does not have a seat belt length adjustment mechanism. Connect the other end of the seat belt 4 to each of the retractors 31, 3
2, as described with reference to FIG. 2, the lock holder may be changed and attached to a lock holder corresponding to an international standard of the International Organization for Standardization (ISO).

The operation of the occupant restraint system 1 shown in FIG. 9 will be described. After sitting, the occupant can pull out the occupant restraint device 1 with the impact shield 5 against the rewinding force of the retractors 31 and 32 to restrain the occupant.

The occupant need only pull out the occupant restraint device 1 after sitting down against the rewinding force of the retractors 31 and 32, and can provide an occupant restraint device that does not need to be adjusted in position or angle. It has excellent effects.

When a plurality of the occupant restraint devices 1 described with reference to FIGS. 1, 2, 8, and 9 are provided on the seat 2, the relationship between the fixed end belt and the free end belt is difficult to understand. It is effective to easily determine the correspondence between the fixed end belt and the free end belt by changing, changing the pattern, or changing the shape.

The occupant restraint system 1 according to the embodiment of the present invention described with reference to FIGS. 1, 2, 8, and 9 has the following effects, in addition to the excellent effect that there is no need to adjust the position and the angle.

It is not only unnecessary to manually adjust the length of the seat belt 4 and the position of the impact shield 5, but also an excellent effect that the occupant's free movement is not hindered.

When not in use, it fits compactly and does not fall apart, so that an excellent effect is obtained in a three-seater seat such as an infant bus that it does not disturb other occupants.

A pretensioner having an emergency lock and a seat belt rewinding function for the retractor, a force limiter for preventing the seat belt from being pulled out when the seat belt is pulled out at an acceleration exceeding a specified level or when the vehicle is subjected to an acceleration level exceeding a specified level. And an excellent effect that the restraint performance can be further improved.

An embodiment of an occupant restraint system according to another embodiment of the present invention will be described with reference to FIG. FIG. 10 is an overall perspective view showing the concept of an example of an occupant restraint device according to another embodiment of the present invention. The occupant restraint device 101
A protection bar 104 for restraining the occupant, a protection bar arm 106 that connects the protection bar 104 and is rotatable from above the occupant to the front of the occupant, and is capable of extending and retracting the protection bar 104 with respect to the protection bar arm 106 (not shown). A protection bar length adjustment mechanism is provided. The protection bar arm 106 is
The rotating shaft 10 at the end opposite to the side where the protection bar 104 exists.
5 and rotatably supported by the seat frame 103. FIG. 10 shows that when the occupant restraint device 101 is in the retracted state (when the occupant restraint device 1 is above the occupant, which is indicated by a two-dot chain line in the drawing, and the same applies hereinafter), the protection bar 104 is moved from the rotation shaft 105 to the length. When the protective bar 104 is separated from the rotating shaft 105 by a length L2 (L1 is larger than L2) when the device is in use (when the occupant restraint device 1 is in front of the occupant), the protective bar 104 is separated from the rotating shaft 105 by L1. It is composed.

With this configuration, when the occupant restraint device 101 is rotated from a position above the occupant when the occupant is in the retracted position to a position in front of the occupant when the occupant is in use, the movement trajectory of the protection bar 104 is determined. A gap can be secured between the head and the occupant. After rotating the occupant restraint device 101 to a position in front of the occupant, which is a position at the time of use, the protection bar 1
04 fits easily on the occupant's torso.

Next, referring to FIG.
Will be described. FIG. 11 is an operation conceptual diagram showing the operation of the embodiment shown in FIG. After the occupant carrying the school bag 119 is seated, a person other than the occupant, for example, the parent, rotates the protection bar arm 106 to which the protection bar 104 is connected from the occupant upper position to the occupant front position about the rotation shaft 105 as an axis. At this time, it can be seen that a gap can be secured between the movement trajectory of the protection bar 104 and the occupant's head. After the occupant restraint device 101 is rotated to a position in front of the occupant, which is a position at the time of use, the protection bar 104 is moved to L1.
-Shrinks by L2 and easily fits the occupant's torso.

An example of an occupant restraint system according to another embodiment of the present invention will be described with reference to FIG. FIG. 12 is a partial cross-sectional view of one example of an occupant restraint device according to another embodiment of the present invention. The occupant restraint device 101 includes a protection bar 104 that restrains the occupant, a protection bar arm 106 that connects the protection bar 104 and is rotatable from above the occupant to the front of the occupant, and a protection bar arm 106 that connects the protection bar 104 to the occupant.
And a protection bar length adjusting mechanism 140 that can be extended and retracted. Hereinafter, each component will be described in detail.

The protection bar 104 directly restrains an occupant and includes a pad portion 107 extending in the vehicle left-right direction and a protection bar slide movable portion 108 connected to the pad portion 107 and extending in the direction of the rotation shaft 105. Have. An elastic body 110, which is a component of a protection bar length adjustment mechanism 140 described later, is provided inside the protection bar slide movable portion. One end of the elastic body 110 is connected to one end of the protection bar arm section 106, and the other end is connected to an elastic body fixing section 109 provided on the side of the protection bar 104 in the protection bar slide movable section 108. A shaft support member 111 of the protection bar slide movable unit is provided at an end of the protection bar slide movable unit 108 opposite to the protection bar 104.

One end of the protection bar arm 106 is rotatably supported by a rotation shaft 105 fixed to a seat frame (not shown), and the other end of the protection bar slide movable portion 108 of the protection bar 104 is slidable. Attached to. The protection bar arm 106 is rotated by a rotation stopper 115 fixed to a seat frame (not shown).
When the occupant restraint device 101 is stored at the upper position of the occupant, the movement is restricted. Similarly, when the occupant restraint device 101 is in the occupant forward position, the movement of the protection bar arm portion 106 is restricted by a rotation stopper 116 fixed to a seat frame (not shown) or the like.

The protection bar length adjusting mechanism 140 includes an elastic body 110 provided inside the protection bar slide movable portion 108.
And the link 113 as main components. Link 11
One end of 3 is pivotally supported by an arm connection shaft 112, and the other end is pivotally supported by an arm fixed end 114 fixed to a seat frame (not shown) or the like. With this configuration, the protection bar 104 is attached to the arm portion fixed end 114.
, And can expand and contract with respect to the protection bar arm 106 against the spring force of the elastic body 110. The link 113 connecting the protection bar 104
The arm connection shaft 112 is set at a position higher than the rotation shaft 105 for enabling the protection bar arm 106 to rotate. For this reason, as shown in FIG. 12, the protection bar arm portion 106 has an arc R centered on the rotation shaft 105.
2, the arm connecting shaft 112 draws a trajectory of the arc R22 with the arm fixed end 114 as a rotation axis. The protection bar 104 draws the locus of the curve R1 as a result of synthesizing the locus of the arc R2 and the locus of the arc R22. As is clear from FIG. 12, the locus of the curve R1 is the highest position above the occupant's head, so that a gap can be secured between the pad portion 107 and the occupant's head.

In the above configuration, instead of the link 113, a wire or a string may be used. An elastic body such as rubber may be used. Any member can be used as long as it can restrict the movement of the protection arm 104 against the spring force of the elastic body 110.

Next, the operation will be described. After the occupant is seated, a person other than the occupant may move the protection bar 104 or the protection bar arm 106 from the retracted position indicated by a two-dot chain line by about one distance.
When the pad portion 107 is rotated to the use position rotated by 00 degrees, the pad portion 107 receives the spring force of the elastic body 110 and draws a locus of a curve R1.
16 and stops the rotation operation in front of the occupant.

According to the occupant restraint apparatus 101 described above, there is an excellent effect that it is possible to provide an occupant restraint apparatus that can easily fit the occupant's torso without adjusting the position and angle. .

Further, according to the occupant restraint device 101, the locus of the curve R1 is the highest position above the occupant's head, so that a gap is secured between the pad portion 107 and the occupant's head. It has an excellent effect that it can be performed.

Referring to FIG. 13, another occupant restraint system 101 will be described. FIG. 13 is a partial sectional view of another example of the occupant restraint device according to another embodiment of the present invention. A description will be given mainly of a configuration different from FIG. The difference from FIG.
This is a protection bar length adjustment mechanism 140. A protection bar length adjusting mechanism 140 shown in FIG. 12 is configured such that a thread-shaped member 117 is connected at one end to a connection shaft 112 and the other end is connected to a thread winding body 118 supported by a rotation shaft 105. It is. As the thread-shaped member 117, any flexible member such as a thread, a belt, a chain, and a mainspring plate can be used.

Next, the operation will be described. After the occupant is seated, a person other than the occupant may move the protection bar 104 or the protection bar arm 106 from the retracted position indicated by a two-dot chain line by about one distance.
When the pad portion 107 is rotated to the use position rotated by 00 degrees, the pad portion 107 attempts to move outward in the radial direction by receiving the spring force of the elastic body 110, but the thread-shaped member 117 Since it is wound on the circumference, the pad portion 107 approaches the rotating shaft 105 by the length of the wound. As a result, the pad portion 107 draws a locus of the curve R3, and the protection bar arm portion 106
And stops the turning operation in front of the occupant.

According to the occupant restraint device 101 described above, there is an excellent effect that it is possible to provide an occupant restraint device which can easily fit the occupant's body without adjusting the position and angle. .

According to the occupant restraint apparatus 101 described above, it is possible to secure a gap between the pad 107 and the head of the occupant if the position of the pad 107 at the time of storage is appropriately set. It has excellent effects.

Next, another occupant restraint system 10 will be described with reference to FIG.
1 will be described. FIG. 14 is a partial cross-sectional view of another example of the occupant restraint device according to another embodiment of the present invention. FIG.
The following description focuses on the configuration different from 2. The occupant restraint device 101 shown in FIG. 14 includes a protection bar 104 for restraining an occupant, a protection bar arm 106 that connects the protection bar 104 and is rotatable to the front of the occupant, and is capable of extending and retracting the protection bar 104 with respect to the protection bar arm 106. Protection bar length adjustment mechanism 1
40 is provided. The protection bar 104 includes a pad 107
It has. The protection bar 104 is a protection bar arm 1
06. A long hole 1 is provided at a position on the opposite side of the protection bar 104 of the protection bar arm portion 106 from the center.
20 are provided. The rotating shaft 105 fixed to a seat frame (not shown) is inserted into the elongated hole 120. A guide pin 121 is fixed to an end of the protection bar arm 106 opposite to the protection bar 104. The guide pin 121 is inserted into a guide groove 123 provided inside a guide plate 122 fixed to a seat frame (not shown). The guide groove 123 is set to have a shape such that the pad portion 107 of the protection bar 104 can secure a gap between the pad portion 107 and the head of the occupant, as described later.

Next, the operation will be described. After the occupant is seated, when a person other than the occupant rotates the protection bar 104 or the protection bar arm portion 106 to a use position that is rotated about 100 degrees from the retracted position indicated by the two-dot chain line, the pad portion 107 is rotated. Is the protection bar 104 of the protection bar arm 106.
A guide pin 121 provided at an end opposite to the side of FIG. 2 and a guide groove 123 into which the guide pin 121 is inserted follow the guide bar 121, and are opposite to the protection bar 104 of the protection bar arm 106 and from the center. The trajectory shown by the curve R4 is drawn by the following operation by the elongated hole 120 provided at the position and the rotating shaft 105 inserted into the elongated hole 120, and the occupant moves while securing a gap between the occupant's head and the occupant. . It should be noted that how to set the gap between the occupant's head and the occupant can be appropriately set according to the shape of the long hole 12 and the shape of the guide groove 123.

According to the occupant restraint apparatus 101 described above, there is an excellent effect that it is possible to provide an occupant restraint apparatus that can easily fit the occupant's torso without adjusting the position and angle. .

According to the occupant restraint device 101 described above, by appropriately setting the shape of the long hole 12 and the shape of the guide groove 123, an appropriate gap is secured between the pad portion 107 and the occupant's head. The effect is excellent.

Next, referring to FIG. 15, another occupant restraint system 10 will be described.
1 will be described. FIG. 15 is an overall perspective view of one example of an occupant restraint device according to still another embodiment of the present invention.
A description will be given mainly of a configuration different from FIG. The occupant restraint device 101 of FIG. 15 includes a protection bar 104 for restraining the occupant,
A protection bar arm 10 that connects the protection bar 104 and can rotate the protection bar 104 from the side of the vehicle toward the front of the occupant.
6 is provided. The protection bar 104 is connected to the protection bar arm 106. One end of the protection bar arm 106 is rotatably supported by a rotation shaft 105 attached to the vehicle side. The other end of the protection bar arm unit 106 includes a lock mechanism 130, and the seat frame 10
3 is configured to be lockable to the lock receiving mechanism 131 attached to the lock 3. In order to release the lock, a lock release means 132 is provided at an operable position of the occupant.

Next, the operation will be described. After the occupant is seated, the protection bar 104 or the protection bar arm 106
When the protection bar 104 is rotated by the protection bar sideways mechanism 150 to a position in use that is rotated about 90 degrees from the storage position indicated by the two-dot chain line, the protection bar 104 is moved to the stopper 133 provided on the seat frame 103. Stop by contact. At this time, the protection bar arm 106 is simultaneously moved by the lock mechanism 130 and the lock receiving mechanism 131 to the seat frame 10.
Locked to 3. In this state, the occupant enters the protection bar 104
Is bound by

According to the occupant restraint device 101 described above, there is an excellent effect that it is possible to provide an occupant restraint device that can easily fit the occupant's body without adjusting the position and angle. .

According to the occupant restraint apparatus 101, the distance between the occupant's head and the protection bar 104 or the protection bar arm 106 is appropriately set, so that the occupant's head and the protection bar 104 or the protection bar arm are appropriately set. There is an excellent effect that an appropriate gap can be ensured between the gap and the gap 106.

[0064]

According to the first aspect of the present invention, a seat belt, a seat belt length adjusting mechanism connected to the seat belt and provided at a position for restraining an occupant, and an impact shield covering the seat belt length adjusting mechanism are provided. Therefore, the occupant restraint device is characterized by having an excellent effect of being able to provide an occupant restraint device that does not need to be adjusted in position or angle.

According to a second aspect of the present invention, there is provided the occupant restraint device according to the first aspect, wherein the seat belt length adjusting mechanism has rotating bodies that rotate in opposite directions to each other. This provides an excellent effect that an occupant restraint device that does not need to be adjusted in angle or angle can be provided.

According to a third aspect of the present invention, there is provided an occupant restraint system comprising: a seat belt having a retractor at at least one end; and an impact shield connected to the seat belt and provided at a position for restraining an occupant. Therefore, there is an excellent effect that an occupant restraint device that does not need to be adjusted in position and angle can be provided.

According to a fourth aspect of the present invention, there is provided a protection bar for restraining an occupant, a protection bar arm for connecting the protection bar and rotating forward of the occupant, and the protection bar is extendable with respect to the protection bar arm. Since the occupant restraint device is provided with a protection bar length adjusting mechanism, it is possible to provide an occupant restraint device that can easily fit the occupant's torso without adjusting the position and angle. It has an excellent effect that it can be done.

According to a fifth aspect of the present invention, there is provided a protection bar for restraining an occupant, and a protection bar arm for connecting the protection bar and rotating the protection bar from the side of the vehicle to the front of the occupant. The occupant restraint device described above has an excellent effect of being able to provide an occupant restraint device that can easily fit the occupant's torso without adjusting the position and angle.

[Brief description of the drawings]

FIG. 1 shows an occupant restraint system according to one embodiment of the present invention.
It is an overall perspective view of an example.

FIG. 2 is an overall perspective view of another example of the occupant restraint device according to one embodiment of the present invention.

FIG. 3 is a schematic perspective view of an example of a seat belt length adjusting mechanism of the occupant restraint device according to one embodiment of the present invention.

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3;

FIG. 5 is a perspective view of another example of the seat belt length adjusting mechanism of the occupant restraint device according to one embodiment of the present invention.

FIG. 6 is a schematic perspective view of another example of the seat belt length adjusting mechanism of the occupant restraint device according to one embodiment of the present invention.

FIG. 7 is a perspective view of another example of the seat belt length adjusting mechanism of the occupant restraint device according to one embodiment of the present invention.

FIG. 8 is an overall perspective view of one example of an occupant restraint device according to another embodiment of the present invention.

FIG. 9 is an overall perspective view of another example of the occupant restraint device according to another embodiment of the present invention.

FIG. 10 is an overall perspective view showing the concept of an example of an occupant restraint device according to another embodiment of the present invention.

11 is an operation conceptual diagram showing an operation of the embodiment shown in FIG.

FIG. 12 is a partial cross-sectional view of one example of an occupant restraint device according to another embodiment of the present invention.

FIG. 13 is a partial sectional view of another example of the occupant restraint device according to another embodiment of the present invention.

FIG. 14 is a partial cross-sectional view of another example of the occupant restraint device according to another embodiment of the present invention.

FIG. 15 is an overall perspective view of one example of an occupant restraint device according to still another embodiment of the present invention.

FIG. 16 is a schematic side view of the prior art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Occupant restraint device 2 ... Seat 3 ... Seat frame 4 ... Seat belt 5 ... Impact shield 6 ... Free end belt 7 ... Tongue 8 ... Free end belt fixing part 9 ... Buckle 10 ... Fixed end belt 11 ... Fixed end belt fixing portion 12 ... Lock holder 13 ... Anchor 20 ... Free end retractor 21 ... Free end retractor shaft 22 ... Return spring 23 ... Fixed end retractor 24 ... Fixed end retractor Shaft 25 Return spring 26 Bracket 27 Sliding transmission band 28 Fixed-end retractor gear 29 Free-end retractor gear 30 Retractor 31 Retractor 32 Retractor 40 Seat belt length Adjustment mechanism 41 Rotating body 42 Rotating body 101 Occupant restraint device 102 Seat 103 Seat frame Protective bar 105 Rotating shaft 106 Protective bar arm 107 Pad portion 108 Protective bar slide movable portion 109 Elastic body fixing portion 110 Elastic body 111 Protective bar slide movable portion ... Axial support member 112 ... Arm connecting shaft 113 ... Link 114 ... Arm fixed end 115 ... Rotation stopper 116 ... Rotation stopper 117 ... Thread wound member 118 ... Thread wound body 119 ... School cell 120 ... Slot 121 Guide pin 122 Guide plate 123 Guide groove 130 Lock mechanism 131 Lock receiving mechanism 132 Lock release mechanism 133 Stopper 140 Protective bar length adjusting mechanism 150 Protective bar side down mechanism 201: Main seat back 202: Auxiliary seat back 203: Arm part 2 4 ...... cushion 205 ...... slot 206 ...... handle 207 ...... seat cushion

Claims (5)

[Claims] 1. A seat belt, a seat belt length adjustment mechanism connected to the seat belt and provided at a position for restraining an occupant, and an impact shield covering the seat belt length adjustment mechanism. Occupant restraint. 2. The occupant restraint system according to claim 1, wherein said seat belt length adjusting mechanism has rotating bodies that rotate in opposite directions. 3. An occupant restraint system comprising: a seat belt having a retractor at least at one end; and an impact shield connected to the seat belt and provided at a position for restraining an occupant. 4. A protection bar for restraining an occupant, a protection bar arm that connects the protection bar and is rotatable forward of the occupant, and a protection bar length adjustment that allows the protection bar to expand and contract with respect to the protection bar arm. An occupant restraint device comprising a mechanism. 5. An occupant restraint system comprising: a protection bar for restraining an occupant; and a protection bar arm for connecting the protection bar and rotating the protection bar forward from the side of the vehicle to the occupant. .