JPH0511734Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is provided with a slider that can be driven in the longitudinal direction of the vehicle body, and the tip of the webbing pulled out from the take-up device is locked to the slider, so that the webbing is moved onto the slider. The present invention relates to a buckle device that is used in an automatic seat belt device that is driven in the front-rear direction of a vehicle body and automatically applied to a passenger through a tongue plate, and that supports webbing in a detachable manner on a slider in combination with a tongue plate.

[Prior Art] As a seat belt device installed in an automobile, a so-called automatic seat belt device in which webbing is automatically attached to an occupant has been proposed.

The automatic seat belt device is provided with a guide rail along the door opening, and a slider is provided to be movable along the guide rail, and the tip of the webbing pulled out from the retractor is latched to the slider. There is a type in which a slider is driven along a guide rail to move the webbing in the longitudinal direction of the vehicle and automatically attach it to the occupant.

In this type of automatic seat belt device, it has been considered to provide a buckle device for unfastening the webbing in case of a vehicle emergency.

The buckle device is equipped with a lock plate that can be engaged and disengaged with a tongue plate that is engaged with the tip of the webbing, and the buckle device that is equipped with the lock plate that can be engaged and disengaged is completely separate from the slider. The webbing is fixed to the slider with bolts, rivets, etc., so that the tip of the webbing is detachably supported on the slider. That is, by releasing the engagement between the lock plate and the tongue plate of the buckle device, the webbing tip is removed from the slider and the webbing is released.

By the way, since the buckle device is fixed to the slider completely separately from the slider, the fixing portion includes bolts, rivets, etc., and therefore protrudes significantly into the interior space of the vehicle.

This protrusion should be suppressed, and the slider is subject to high loads, especially when the vehicle suddenly decelerates.
It is necessary to have sufficient strength to counter this, and to ensure that the movement of the slider is not hindered by the effects of receiving a high load even after the load is removed.

[Problems to be solved by the invention] Taking the above facts into consideration, the invention provides a buckle device for an automatic seat belt device that reduces the amount of protrusion into the vehicle interior space and provides sufficient strength to the slider. The purpose is to obtain.

[Means for Solving the Problems] The present invention is provided with a slider that can be driven to move in the longitudinal direction of the vehicle body, and the tip of the webbing pulled out from the take-up device is locked to the slider, so that the webbing is moved through the slider. The seat belt device is used in an automatic seat belt device that is driven to move in the longitudinal direction of a vehicle body and automatically applied to a passenger, and is provided with a lock plate that can be engaged and disengaged from a tongue plate that is secured to the webbing tip. A buckling device for detachably supporting a slider,
The slider is formed of two plate materials that overlap each other, and the two plate materials are integrally extended and opposed to each other at a distance to form a pair of opposing pieces, and the pair of opposing pieces are connected to the tongue plate. It is characterized by supporting a lock plate for engagement.

[Function] In the buckling device for an automatic seat belt device having the above configuration, the tip of the webbing pulled out from the retracting device is engaged with the tongue plate, and the tongue plate is inserted between the pair of opposing pieces, and the webbing is inserted between the pair of opposing pieces. The webbing is engaged with a lock plate between the ends thereof, thereby supporting the leading end of the webbing pulled out from the take-up device to the slider.

Therefore, in the buckling device of the present invention, a part of the buckling device is formed on the slider, that is, the member supporting the lock plate is formed on the slider side, and there is no need to provide a fixing part for fixing the entire buckling device to the slider. , the amount of protrusion into the vehicle interior space decreases accordingly.

In addition, high loads are applied to the slider, especially when the vehicle suddenly decelerates, but the slider is constructed from a pair of overlapping plates, and has sufficient strength to withstand high loads. Deformation such as twisting is prevented from occurring. The slider is driven to move, and deformation such as twisting affects the movement of the slider, so the above-mentioned improvement in strength is effective.

[Embodiment] FIGS. 1 to 4 show an embodiment of a buckle device for an automatic seat belt device according to the present invention. FIG. 5 shows an automatic seat belt device to which an embodiment of the present invention is applied.

In this automatic seat belt device, one end of the webbing 20 is wound up by a biasing force onto a winding device 24 attached at approximately the center of the vehicle. This take-up device 24 has a built-in inertia lock mechanism that instantly stops pulling out the webbing 20 in the event of a vehicle emergency.

The other end or tip of this webbing 20 is attached to a tongue plate 26, and the tongue plate 26
6 and is locked to the slider 30 via a buckle device 28 that can be engaged and disengaged from the slider 30.

The slider 30 is guided by a guide rail 32 and is movable in the longitudinal direction of the vehicle. The guide rail 32 has an intermediate portion attached substantially horizontally along the roof side member 34, and a front end portion attached obliquely along the front pillar 36. The rear end of this guide rail 32 is bent at a substantially right angle and is attached along the center pillar 38.

The slider 30 is driven along a guide rail 32 by a drive means (not shown).

Therefore, this automatic seat belt device is configured such that by driving the slider 30, the webbing 20 is moved in the longitudinal direction of the vehicle so that the webbing 20 can be automatically attached to and unattached to the occupant 42 seated on the seat 40. . Also, tongue plate 2
6 and the buckle device 28, one end of the webbing 20 is attached to the slider 3.
The structure is such that the webbing 20 can be unattached by removing it from zero.

Next, the slider 30 and the buckle device 2
8 will be explained in detail.

As shown in FIG. 1, the slider 30 is composed of two plates 44 and 46. Plate material 44,4
6 overlap each other and are fixed by welding or the like, and a slide portion 4 for sliding onto the guide rail 32 is provided at one end.
8 is formed, and opposing pieces 50 and 52 are formed at the other end, facing each other and spaced apart in parallel.

Leg plates 54 and 56 are formed on both sides of the opposing pieces 50 and 52 in the width direction, respectively. A pair of leg plates 5
6 is overlapped to the inside of the leg plate 54, thereby forming a rectangular opening 58 corresponding to the height of the leg plate 56 between the opposing pieces 50 and 52. In the leg plates 54 and 56, corresponding notches 60 and 62 are formed in the longitudinal intermediate portions of the opposing pieces 50 and 52, respectively, to form an opening 58.
The inside and outside of the building are connected.

In addition, approximately rectangular openings 68 and 70 corresponding to each other are formed in the approximately central portions of the opposing pieces 50 and 52, respectively. tongue piece 7
4,76 is protruded.

The end of the slider 30 opposite to the slide portion 48, that is, the end on the opposing pieces 50, 52 side, constitutes the main body of the buckle device 28, and as shown in FIG. 86 and a lower cover 88, and an ejector 82, an eject spring 84, a lock plate 78, a release button 80, and a compression coil spring 81 are assembled therein.

The upper cover 86 and the lower cover 88 are fixed to each other while facing each other. The top cover 86 is provided with a rectangular hole 90 and a notch 9.
2,94 are formed. The notches 92 and 94 are the notches 9 formed in the lower cover 88, respectively.
6 and 98, and when the lower cover 88 and the upper cover 86 are assembled, as shown in FIG.
00 and the rectangular through hole 10 of the slider 30 on the other side.
2 is formed.

Facing piece 5 between buckle cover 89 and slider 30
At the ends on the 0 and 52 sides, the opposing piece 50 is placed on the upper cover 86 side, the opposing piece 52 is placed on the lower cover 88 side, and the opening 58 and the rectangular hole 100 correspond to each other.

The ejector 82 has a rectangular parallelepiped main body 126, a lower guide part 128, an upper guide part 130, and a first
A spring support portion 132 is integrally formed on the back side of the figure.

In this ejector 82, the lower guide part 128 is slidably fitted into the opening 70 of the opposing piece 52, and the upper guide part 130 is slidably fitted into the opening 68 of the opposing piece 50. It is supported so that it can move in the direction.

The eject spring 84 has a tongue piece 74 at one end,
76, and the other end is fitted to the spring support portion 132 of the ejector 82, urging the ejector 82 to the left in FIG. is the opposite piece 5
It is pressed into contact with the inner peripheral edge of the opening 68 of No. 0 and is positioned at the limit of movement to the left in FIG. The ejector 82 is movable to the right in FIG. 2 against the biasing force of the eject spring 84.

The lock plate 78 has a tongue plate engaging piece 104 in the center.
Guide pieces 106 and 108 having substantially the same length as the tongue plate engaging piece 104 are provided on both sides of the tongue plate engaging piece 104, and guide pieces 10 are provided on both sides of the guide pieces 106 and 108, respectively.
Release button engagement piece 11 perpendicular to 6,108
0,112 is extended.

The lock plate 78 is as shown in FIG.
It is arranged between the lower cover 88 and the opposing piece 52. The lock plate 78 has the tongue plate engaging piece 104 in the openings 68, 70, and the guide pieces 106, 1 in the openings 68, 70.
08 are slidably fitted into the notches 60 and 62, respectively, and can be moved upward in FIG. 2 from the position shown in FIG. 2, but the ejector 82 shown in FIG. In the state where the tongue plate engaging piece 104 is located at the limit of movement, the tongue plate engaging piece 104 corresponds to the lower guide portion 128 of the ejector 82, and is restricted from moving upward in FIG. 2 by the ejector 82.

The release button 80 is integrally formed with an operation part 116 that protrudes from the center of a base plate part 114 and leg parts 118 that hang down from both sides of the base plate part 114. As shown in FIG. 2, a cylindrical spring support 120 is integrally formed on the back surface of the base plate 114 to protrude. The lower portions of the legs 118 protrude in a direction toward each other, and rectangular recesses 122 are formed in these protrusions at opposing positions.

The release button 80 is as shown in FIG.
The operating portion 116 is disposed between the top cover 86 and the facing piece 50 and is connected to the rectangular hole 90 of the top cover 86.
is being exposed in response to. Release button 8
0, the recess 122 is engaged with the release button engaging pieces 110, 112 of the lock plate 78, and is integrated with the lock plate 78.
It is also possible to move upward in FIG. 2 from the position shown in FIG.

The compression coil spring 81 is disposed between the release button 80 and the facing piece 50 , one end is fitted into the spring support 120 of the release button 80 , and the other end is in contact with the upper surface of the facing piece 50 .
0 and the lock plate 78 upward in FIG. 2, and the release button 80 and the lock plate 78 are attached to the compression coil spring 81 when the ejector 82 is moved from the position shown in FIG. 2 and is moved upward in FIG. 2 from the position shown in FIG. This movement is done using the release button 8.
The front surface of the base plate section 114 of No. 0 comes into contact with the back surface of the upper cover 86 and is stopped.

The tongue plate 26 engaged with this buckle device 28 is attached to the webbing 2 as shown in FIG.
A through hole 134 is formed at the opposite end to which 0 is engaged.

Next, a procedure for assembling the buckling device 28 will be explained.

The buckle device 28 is assembled in the following manner before the slider 30 is assembled to the guide rail 32.

First, when the slider 30 is assembled, that is, when the two plates 44 and 46 are superimposed and fixed, the ejector 82 is assembled at the same time. After fixing the plates 44 and 46, the ejector 82 is attached to the lower guide portion 12.
8 is inserted into the opening 70 of the opposing piece 52, and the upper guide portion 13
0 is disposed within the opening 68 of the opposing piece 50,
It will not fall out from between the opposing pieces 50 and 52.

After assembling the ejector 82, the eject spring 84 is assembled. Eject spring 84
After assembly, one end is fitted to the tongue pieces 74, 76, and the other end is fitted to the spring support portion 132 of the ejector 82, so that it will not fall off.

After assembling the eject spring 84, the lock plate 78, release button 80, and compression coil spring 81 are assembled at the same time. In this assembly, one end of the compression coil spring 81 is fitted to the spring support 120, and at the same time the release button 80 is supported on the facing piece 50 side and the lock plate 78 is attached to the facing piece 50.
Recessed portion 12 of release button 80 supported on side 2
2 with the release button engaging pieces 110, 112 of the lock plate 78. Lock plate 78, release button 80, compression coil spring 8
1, after assembly, the tongue plate engaging pieces 104 of the lock plate 78 are inserted into the openings 68, 70, and the guide pieces 106, 108 of the lock plate 78 are inserted into the notches 60, 6.
2, each is reliably positioned and will not be misaligned.

After assembling the lock plate 78, release button 80, and compression coil spring 81, the upper cover 86 and lower cover 88 are joined and fixed, resulting in the assembled state shown in FIG. 2.

In the assembled state shown in FIG.
The ends of the opposing pieces 50 and 52 are the buckling device 28.
Insofar, a part of the buckle device 28 is formed integrally with the slider 30.

Therefore, the buckle device 28 is completely separate from the conventional buckle device 28 and is attached to the slider 3.
0, the lock plate 78
Since a member supporting the buckle device 28 is formed on the slider 30 side, there is no need to provide a fixing part for fixing the entire buckle device 28 to the slider 30, and the slider 3
The amount of protrusion into the interior space of the vehicle when the 0 is assembled to the guide rail 32 can be extremely reduced. Also,
At least the entire buckle device 28 is moved to the slider 30.
There is no need for mounting members such as bolts or rivets to fix the device to the device, which reduces the number of parts and assembly man-hours, resulting in lower costs.

The operation and operation of engaging the tongue plate 26 with the buckle device 28 as shown in FIGS. 3 and 4 will be described below.

Shown in FIG. 2 is tongue plate 26 disengaged from buckle device 28. As shown in FIG. From the state shown in the figure, the tongue plate 26
When the tongue plate 26 is inserted into the rectangular hole 100 from the direction of arrow A in the figure, the tongue plate 26 enters between the opposing pieces 50 and 52 through the opening 58 and comes into contact with the ejector 82. If the tongue plate 26 is still inserted, the ejector 82 will release the ejector spring 8.
It is moved to the right in FIG. 2 against the urging force of 4.

By moving the ejector 82, the tongue plate 2
6 is further inserted and the through hole 134 passes above the tongue plate engaging piece 104 of the lock plate 78 in FIG. will be moved to Lock plate 78
The upward movement of the release button 80 is stopped when the surface of the base plate 114 of the release button 80 comes into contact with the top cover 86. This state is the tongue plate engagement state shown in FIGS. 3 and 4.

When it is necessary to release the tongue plate 26 in a vehicle emergency, etc., press the release button 80 downward in FIGS. 3 and 4 against the biasing force of the compression coil spring 81. Bye. That is, when the release button 80 is pressed, the lock plate 78 moves downward in FIGS. 3 and 4, and the tongue plate engaging piece 104 of the lock plate 78 engages the tongue plate 2.
When the ejector 82 passes through the through hole 134 of No. 6, the ejector 82 is biased by the eject spring 84 and presses the tongue plate 26 to the left in FIG. 26 is dissociated.

In addition, in the state shown in FIG. 5, if a large tension is applied to the webbing 20 in a vehicle emergency, etc., the lock plate 78 supporting the tongue plate 26 will close at the upper and lower portions of the tongue plate 26 in FIG. Since it is supported by the opposing pieces 50 and 52 of the slider 30, the support strength is high and the reliability is also high.

In addition, although a high load is applied to the slider 30, especially when the vehicle suddenly decelerates, the slider 30 is constructed of a pair of overlapping plates 44 and 46, and has sufficient strength to withstand the high load. This prevents deformation such as twisting of the slider 30 due to the braking. The slider 30 is movable, and deformation such as twisting affects the movement of the slider 30, so the improvement in strength is effective.

In addition, the slider 30 may be made to come into contact with the guide groove of the guide rail 32 by attaching synthetic resin or the like to a part or the entire outer periphery of the plates 44 and 46.

[Effects of the invention] As explained above, in the buckle device for an automatic seat belt device according to the invention, the slider is formed of two plates that overlap each other, and both plates are integrally extended and separated from each other. Since the slider is formed as a part of the buckle device, that is, a pair of opposing pieces are formed by opposing each other, and the lock plate for engagement with the tongue plate is supported by the pair of opposing pieces. Since the member supporting the plate is formed on the slider side, it is not necessary to provide a fixing part for fixing the entire buckle device to the slider, and the amount of protrusion into the vehicle interior space is reduced accordingly. There is no need for mounting members such as bolts or rivets to fix the entire structure to the slider, resulting in low cost.

Furthermore, although high loads are applied to the slider, especially when the vehicle suddenly decelerates, the slider is constructed from a pair of overlapping plates, which provides sufficient strength and can withstand high loads. Deformation such as twisting is prevented from occurring. The slider is movable, and deformation such as twisting affects the movement of the slider, so the improvement in strength is particularly effective.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing an embodiment of the buckle device for an automatic seat belt device according to the present invention, Fig. 2 is a sectional view showing the assembled state of Fig. 1, and Fig. 3 is a relationship with the tongue plate. FIG. 4 is a sectional view taken along the line - in FIG. 3, and FIG. It is a side view. 20... Webbing, 24... Winding device, 26
... Tongue plate, 28 ... Buckle device, 3
0...Slider, 44, 46...Plate material, 50,5
2...Opposing piece, 78...Lock plate.

Claims (1)

[Scope of utility model registration request] A slider is provided so as to be movable in the longitudinal direction of the vehicle body, and the tip of the webbing pulled out from the winding device is locked to the slider, and the webbing is driven to move in the longitudinal direction of the vehicle body via the slider, and is automatically applied to the occupant. A buckle device that is used in an automatic seat belt device and includes a lock plate that can be engaged with and disengaged from a tongue plate that is engaged with the tip of the webbing, and supports the tip of the webbing in a detachable manner on a slider, the buckle device comprising: The slider is formed of two plate materials that overlap each other, and both plate materials are integrally extended and opposed to each other at a distance to form a pair of opposing pieces, and the pair of opposing pieces connect with the tongue plate. A buckle device for an automatic seat belt device, characterized in that it supports a lock plate for engagement.