JPH0437442Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a buckle device that is used in combination when two or more sets of seat belt devices arranged in a vehicle or the like are arranged in the vicinity, such as next to each other.

[Prior Art] In a typical seat belt device, after an occupant seats the seat, the tongue plate attached to the end of the restraint webbing is engaged with the main body of the buckle device, so that the webbing becomes attached.

However, since this tongue plate can also be engaged with the main body of a buckle device used in a seat belt device for another passenger installed in the vehicle, there is a possibility that the tongue plate will be accidentally inserted into the main body of the buckle device of an adjacent seat.

[Problems to be solved by the invention] Taking the above-mentioned facts into consideration, the purpose of the invention is to obtain a combination buckle device for preventing erroneous fitting, which prevents an occupant from wearing a seat belt device for an occupant in an adjacent seat by mistake. be.

[Means for Solving the Problems] In the combination buckling device for preventing incorrect fitting according to the present invention, the width of the tongue plate, the opening width of the opening formed in the tongue plate, and the width of the tongue formed in the buckling device main body are The opening width of the plate insertion opening and the width of the tongue plate locking claw disposed inside the buckling device main body are made different for each buckling device.

That is, the tongue plate of the first buckling device is wider than the opening width of the tongue plate insertion opening of the second buckling device, and cannot be inserted.
The width of the tongue plate locking pawl of the second buckle device is wider than the opening width of the tongue plate opening of the second buckle device, so that engagement is impossible.

[Operation] The second buckling device main body of the first buckling device
If the tongue plate of the first buckling device is inserted by mistake, the tongue plate of the first buckling device will not fit because the width of the tongue plate locking claw is wider than the opening width of the opening of the mistakenly inserted tongue plate.

Furthermore, if the tongue plate of the first buckling device is accidentally inserted into the buckling device main body of the second buckling device, the width of the tongue plate of the first buckling device will be larger than the width of the tongue plate of the second buckling device. It cannot be inserted because it is wider than the opening width of the tongue plate insertion slot on the main body of the device.

[Example] FIG. 1 shows an example of a first buckle device that is attached to seat belt devices placed on both left and right sides of a rear seat of an automobile (not shown), and FIG. An embodiment of a second buckle device is shown attached to a seat belt device located at a seat belt.

As shown in FIG. 1, the buckling device 10 is composed of a buckling device main body 12 and a tongue plate 14. First, each component constituting the main body 12 of the buckle device will be explained with reference to FIG.

The buckle body 16 is composed of a lower body 18 and a top body 20.

The lower body 18 is molded from a single steel plate having a predetermined strength, and the front flat plate surface 18A and the rear flat plate surface 18B are connected from the front flat plate surface 18A to the rear flat plate surface
They are connected by an inclined surface 18C that slopes upward toward B. The front flat plate surface 18A has inclined protrusions 22 extending further forward from both front ends. A recess 24 (a recess when viewed from the back side in the state shown in FIG. 1) is formed at the rear of the protrusion 22 by shearing.

Further, on the front flat plate surface 18A, a long side leg portion 26 and a short side leg portion 28 are formed on the rear side of the recessed portion 24, bending upward at right angles and standing up.
A cutout 30 is formed between the recess 24 and the long side leg 26. A rectangular opening 32 is formed in the center from the front flat plate surface 18A to the rear flat plate surface 18B. A rectangular opening 34 is formed in the rear flat plate surface 18B, and a trapezoidal tongue piece 36 that projects into the opening 32 is formed. Further, the rear flat plate surface 18B has a protrusion 3 that projects rearward.
7 is formed, and a through hole 39 is bored in the center.

The Atsupa body 20 is formed from a single steel plate having the required strength, and the front flat plate surface 20A and the rear flat plate surface 20B are connected from the front flat plate surface 20A to the rear flat plate surface 2.
They are connected by an inclined surface 20C that slopes downward toward 0B. Front leg portions 38 are formed at both front end portions of the front flat plate surface 20A and are bent downward and hanging down at right angles. A notch 40 is formed in the front leg 38 on the outer side of the intermediate portion. Front flat plate surface 20
In A, a recess 42 is formed by shearing the rear of the front leg 38.

Further, on the front flat plate surface 20A, a side leg portion 44 is formed on the rear side of the recess 42 and is bent downward and hangs down at a right angle. The distal end of the side leg portion 44 is bent forward again into two to form a substantially C-shaped distal end portion 46, and the center portion is a through hole 48. Note that the width between the side leg portions 44 is wider than the width between the long side leg portions 26 and the short side leg portions 28 formed on the lower body 18. Recess 4
A notch 50 is formed between 2 and the side leg 44. From the front flat plate surface 20A to the rear flat plate surface 20B
A rectangular opening 52 is formed in the center. A recess 54 is formed on both sides of the front part of the opening 52, and a recess 56 is formed on both sides of the rear part. A rectangular opening 58 is formed in the rear flat plate surface 20B, and a protrusion 60 that projects rearward is formed. A through hole 62 is bored in the center of the protrusion 60 .

The lock plate 64 is formed by molding a single steel plate having the required strength into a substantially E shape, and the leg part protruding from the center is the tongue plate locking part 66.
The leg portions protruding from both ends are C-shaped spring contact portions 68. The C-shaped spring contact portion 68 has a lever contact portion 70 that protrudes outward in the width direction.
is formed.

The C-shaped spring 72 is a plate spring having a substantially C-shaped cross section, and is deformed under pressure to store strain energy. The lever 74 has a structure in which a pair of lever parts 76 formed from plate material into a substantially L-shape are connected by a bar 78. The long side of the lever portion 76 serves as a release button contact portion 80, and the short side serves as a lock plate contact portion 82. The bar 78 is a substantially cylindrical bar and can be inserted into the through hole 48 formed in the upper body 20.

The lock plate spring 84 is a plate spring having a substantially U-shaped planar shape, and has a connecting portion 88 between a pair of legs 86.
A fixing portion 90 to the buckle body extends downward. The fixing part 90 has a rectangular opening 9.
2 is formed, and the portion that was located in this portion before the opening 92 was formed is cut and raised from the fixing portion 90 at a right angle as a rectangular tongue piece 94. Leg portions 96 that protrude rearward are formed at both ends of the connecting portion 88 so as to be opposed to the leg portions 86 .

The ejector 98 has a main body part 100 and a lower guide part 1.
02, upper guide part 104, and spring support part 1
The main body part 100, which is a block material formed by integrally molding the main body part 100 and the main body part 100, has a substantially rectangular parallelepiped shape with an inclined surface 108 formed at the center of the front upper surface. The lower guide part 102 and the upper guide part 104 have a rectangular parallelepiped shape with a widthwise length shorter than that of the main body part 100.
They are located at the bottom and top of the rear center. The spring support portion 106 has a substantially truncated conical shape, and its bottom portion is located on the back side of the main body portion 100, the lower guide portion 102, and the upper guide portion 104.

The release button 110 includes a main body 112 and a pair of legs 114 extending downward from both sides of the main body 112. Main body part 112
As shown in FIGS. 2 to 4, lever contact walls 116 are formed on both inner sides, and a lever contact wall 116 is formed on the widthwise inner side of the lever contact wall 116 downward from the main body 112. A protruding sliding guide portion 118 is formed. A long and narrow through hole 120 is bored in the leg portion 114 in the front-rear direction. Further, a lever abutment wall 122 is formed at the upper rear end portion of the leg portion 114 .

A cylindrical spring support portion 126 is formed in the spring holder 124 toward the front, and a groove portion 128 is further formed in the width direction of the spring support portion 126 on the non-protruding side. Further, the spring holder 124 is formed with an opening 130 having a rectangular cross section that communicates with the groove 128 and penetrates in the front-rear direction.
A tongue piece 132 is formed to protrude from the protruding side. A release button spring 134 is fitted into the spring support portion 126, and an eject spring 136 is fitted into the tongue piece 132.

The release button spring 134 and the eject spring 136 are compression coil springs.

The buckle cover 138 is composed of a lower cover 140 and a top cover 142. A tongue plate insertion opening 144 is formed at the lower front of the top cover 142, and an insertion opening 146 for the release button 110 is formed at the upper front.

Next, the procedure for assembling each of the above parts will be explained.
First, insert the ejector 9 into the opening 32 of the lower body 18.
8 is placed. The ejector 98 is the lower guide part 10
3 is fitted into the opening 32. Next, lower body 1
8, the Atsupa body 20 is assembled. A notch 40 formed in the front leg portion 38 of the upper body 20 is fitted into the protrusion 22 of the lower body 18 .
The buckle body 16 is constructed by assembling the upper body 20 to the lower body 18. In this state, the upper guide portion 104 of the ejector 98 is fitted into the opening 52 of the atsupah body 20. Further, the rear flat plate surface 18B of the lower body 18 is connected to the atsupa body 2.
It abuts and overlaps with the rear flat plate surface 20B of 0.

Next, the rear flat plate surface 18B of the lower body 18 and the rear flat plate surface 20 of the atsupa body 20 overlap.
B is fitted into the groove 128 of the spring holder 124. With this fitting, the spring holder 124
The tongue piece 36 of the lower body 18 fits into the opening 130 formed in the spring holder 124 .
It is held in a state where it overlaps with 32.

The C-shaped spring 72 has a notch 30 and a notch 50 formed in the lower body 18 and the upper body 20.
The intermediate portion is fitted into the body, and both end portions are fitted and locked into the recesses 24 and 42 formed in both bodies.

The lock plate 64 is assembled to the buckle body 16 from above the upper body 20, the tongue plate locking part 66 is inserted between the recesses 54 of the opening 52, and the C-shaped spring contact part 68 is inserted into the notch 50. Further, an opening 92 formed in the fixing portion 90 of the lock plate spring 84 is fitted into the overlapping tongue piece 36 and the tongue piece 132, and one end side of the coil of the eject spring 136 is also fitted. Eject spring 136
The other end of the coil is fitted into a spring support portion 106 formed on the ejector 98. As a result, the ejector 98 has a biasing force to the left in FIGS. 2 to 4.

The lower end surface of the tongue plate locking portion 66 is an inclined surface 108 formed on the main body portion 100 of the ejector 98.
The upper guide part 1 of the ejector 98 is in contact with the rear surface of the ejector 98.
It is brought into contact with the front surface of 04. The free end side of the leg portion 86 of the lock plate spring 84 is engaged with the upper end of the lock plate 64.
is urged downward in FIGS. 2 to 4.

A bar 78 of the lever 74 is inserted into the through hole 48 of the tip portion 46 of the atsupah body 20 . As a result, the bar 78 crosses the back surface of the lower body 18, and the lever portion 76 is positioned outwardly on both sides of the buckle body 16. The release button 110 has a buckle body 1 in which both ends 78A of the bar 78 fit into a through hole 120 formed in the leg 114.
6, and the sliding guide portion 118 comes into contact with the upper surface of the atsupa body 20. Release button 11
One end of the main body portion 112 of the release button spring 134 is brought into contact with the coil of the release button spring 134, and the other end of the coil of the release button spring 134 is fitted into the spring support portion 126 of the spring holder 124. As a result, the release button 110 has a biasing force to the left in FIGS.

Finally, lower cover 14- and Atsupa cover 142
The buckle cover 138 consisting of the following is assembled to the buckle body 16 to complete the assembly of the buckle device main body 12. In addition, in the buckle device main body 12 after assembly is completed, one end of webbing (not shown) is attached to the openings 34 and 58 formed in the lower body 18 and the upper body 20, or the through holes formed in the lower body 18 and the upper body 20 are attached. A stay is attached to the stay 39 and the through hole 62 via a rivet (not shown), and is fixed to the automobile body.

Next, the tongue plate 14 will be explained.

The tongue plate 14 is formed from a single steel plate having a required strength, and includes a base portion 15 and an insertion portion 17 protruding from the base portion 15. base 1
5 has an opening 148 formed in its center. The insertion portion 17 has a flat end portion 17A, and a locking hole 1 in the center thereof that is approximately horseshoe-shaped and has a size corresponding to the width of the tongue plate locking portion 66 of the lock plate 64.
51 is formed. Further, the width of the insertion portion 17 is set to correspond to the opening width of the tongue plate insertion opening 144 formed in the upper cover 142. This tongue plate 14 has a base 15
The other end of a webbing (not shown), one end of which is fixed to the automobile body, is attached to the opening 148 formed in the opening 148 .

Next, the operation of the buckle device 10 having the above-mentioned configuration will be explained.

2 to 4 are explanatory diagrams of the operation of the buckle device 10. FIG. 2 is a schematic side view showing a normal state in which the tongue plate 14 is not engaged with the buckle device main body 12. When the tongue plate 14 is inserted into the buckle device main body 12 in this state from the left side in the drawing, the buckle device main body 12
The tongue plate 14 is engaged with the tongue plate 14, allowing the occupant to wear the webbing.

When the tongue plate 14 is inserted into the buckle device main body 12, the tip portion 17 of the tongue plate 14
A is in contact with the front surface of the main body 100 of the ejector 98, and the ejector 98 is connected to the eject spring 1.
36 and press it toward the right in the drawing. The tongue plate 14 moves to the front right side while pressing the ejector 98, and the locking hole 150 reaches below the tongue plate locking portion 66 of the lock plate 64.

Since the lock plate 64 is urged downward in the drawing by the lock plate spring 84, when the tongue plate 14 reaches the above-mentioned position, it moves downward in the drawing, and the tongue plate locking portion 66 engages the locking hole 151 of the tongue plate 14. insert into. As a result, the tongue plate 14 is attached to the buckle device main body 1.
This means that it has been fitted to 2. This state is shown in FIG.

When releasing the engagement between the tongue plate 14 and the buckle device main body 12, the release button 110 and the release button spring 1 are removed from the state shown in FIG.
It is moved to the right in the drawing against the urging force of 34.
The release button 110 moves with the lower end surface of the sliding guide part 118 abutting the upper surface of the atsupa body 20,
The lever contact wall 116 moves while being in contact with the release button contact portion 80 of the lever 74. Accordingly, as the release button 110 moves, the release button abutting portion 80 of the lever 74 is moved to the right in the drawing, and the lock plate abutting portion 82 is swung clockwise in FIG. 3 about the lever 78.

Due to the rocking of the lock plate contact part 82, the lever contact part 70 is pushed up and the lock plate 6 is pushed up.
4 is moved upward against the biasing force of the lock plate spring 84. The lock plate 64 is moved upward, and the tongue plate locking portion 66 comes out of the locking hole 151 of the tongue plate 14.
At the same time, the ejector 98 biased by the ejector spring 136 moves to the left in the drawing, and the tongue plate 14 is pressed by this ejector 98.
is thrown out of the buckle device main body 12.
This state is shown in FIG.
8 is a lock plate 64 on the front side of the upper guide part 104.
The tongue plate locking portion 66 comes into contact with the back surface of the tongue plate locking portion 66 to prevent further movement to the left in the drawing.
Further, the lower end surface of the tongue plate locking portion 66 of the lock plate 64 abuts against an inclined surface 108 formed on the main body portion 100 of the ejector 98, thereby preventing the lock plate 64 from moving downward.

When the operation of the release button 110 is released from the state shown in FIG.
10 is biased by the release button spring 134 and moves to the left in FIG.
22 and returns to the state shown in FIG.

Next, the second buckling device 150 will be explained with reference to FIG. The buckling device 150 is composed of a buckling device main body 152 and a tongue plate 154. The main body 152 of the buckling device differs from the main body 12 of the buckling device described above only in a lock plate 156 and a top cover 158. Since the other parts are the same as those used in the main body 12 of the buckling device, the same reference numerals are given to them and the explanation thereof will be omitted.

The lock plate 156 is attached to the buckle device main body 12.
The shape is basically the same as that of the lock plate 64, but the only difference is that the width of the tongue plate locking portion 160 is narrower. Atsupa cover 1
58 is the upper cover 14 of the buckle device main body 12
It has basically the same shape as No. 2, but the only difference is that the opening width of the tongue plate insertion opening 162 is narrower. This tongue plate insertion port 16
The opening width of the tongue plate 1 is narrower than the opening width of the tongue plate insertion opening 144.
4, so that the tongue plate 14 cannot be inserted therethrough.

The tongue plate 154 has basically the same shape as the tongue plate 14 of the buckle device 10, but
The width of the insertion portion 164 is made narrower, and the width of the insertion portion 16 is narrower.
The difference is that the opening width of the locking hole 166 formed in No. 4 is narrow. The opening width of this locking hole 166 is narrower than the width of the tongue plate locking portion 66 of the lock plate 64, so that the tongue plate locking portion 66 of the buckle device main body 12 cannot be inserted therein.

Since the buckling device 150 operates in the same manner as the buckling device 10, a description thereof will be omitted.

The operation when the buckle device 10 and the buckle device 150 having the above configurations are attached to seat belt devices disposed adjacent to each other and erroneous attachment is about to occur between the seat belt devices will be described.

FIG. 6 shows the arrangement structure of each buckle device of a seat belt device disposed in the rear seat of an automobile, and FIG. 7 shows a state in which the tongue plate is inserted into the main body of the buckle device. When the tongue plate 14 is inserted into the buckle device main body 12 as shown in FIG. 6 (arrow A), as shown in FIG.
As shown in FIG. 2, the lock plate 64 is fitted into the tongue plate 14, and the seat belt device is placed in the normally attached state. Similarly, when the tongue plate 154 is inserted into the buckle device main body 152 (arrow B), the lock plate 156 is fitted into the tongue plate 154 as shown in FIG. Become. Now,
If the tongue plate 154 is accidentally inserted into the buckle device main body 12 (arrow C), the insertion portion 164 of the tongue plate 154 will pass through the tongue plate insertion opening 144 and reach the inside of the buckle body 16, but the tongue plate 154 will be inserted into the buckle body 16. The width of the locking hole 166 is the same as that of the tongue plate locking portion 6 of the lock plate 64.
Since the width is narrower than the width of 6, fitting does not occur as shown in FIG. 7C. Therefore, the tongue plate 154 is ejected from the buckle device main body 12 by the ejector 98 biased by the ejector spring 136. This prevents incorrect fitting of the seat belt device.

In addition, if the tongue plate 14 is mistakenly inserted into the buckle device body 152 (arrow D in FIG. 6), the width of the insertion portion 17 of the tongue plate 14 should be Since the opening width is wider than the opening width of the tongue plate 162, the insertion portion 17 of the tongue plate 14 cannot be inserted into the buckle device main body 152 and fitting does not occur as shown in FIG. 7D. Therefore, incorrect fitting of the seat belt device is prevented.

In this way, in this embodiment, the buckle device 150
For the buckle device 10, the tongue plate 15
4. Lock plate 156 and top cover 15
By only partially changing the shape of 8, incorrect fitting of the seat belt device can be prevented. In particular, the tongue plate 154 does not have a complicated shape and cause a decrease in the strength of the stress concentration portion, and the L dimension of the insertion portion 164 can be kept long enough to have sufficient strength. Further, in these buckling devices, since the buckling device main body 12 and the buckling device main body 152, which are most easily noticed by the public eye, can be made the same in appearance, the arrangement of the indoor equipment does not give a visually strange feeling.

[Effects of the invention] As explained above, in the combination buckle device for preventing incorrect fitting according to the present invention, the width of the tongue plate, the opening width of the opening formed in the tongue plate, and the width of the tongue plate formed in the body of the buckling device can be adjusted. The opening width of the insertion port and the width of the tongue plate locking claw disposed inside the buckle device main body are different for each buckle device, and when the second tongue plate is inserted into the first buckle device main body, If the tongue plate locking claw is wide and does not fit into the lock plate, and the first tongue plate is about to be inserted into the second buckle device body, the tongue plate insertion opening is narrow and the insertion is blocked. Since the seat belt device is not fitted, it has the excellent effect of preventing incorrect fitting of the seat belt device.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of one buckle device of a combination buckle device for preventing incorrect fitting according to an embodiment of the present invention, and FIG. 2 is a schematic side view of the buckle device showing a state in which the tongue plate is not engaged. , Fig. 3 is a schematic side view showing the state in which the tongue plate is engaged with the buckle device main body, Fig. 4 is a schematic side view when the tongue plate is disengaged from the buckle device main body, and Fig. 5 is a schematic side view showing the state in which the tongue plate is disengaged from the buckle device main body. FIG. 6 is an exploded perspective view of the device, FIG. 6 is a plan view of the arrangement structure of three sets of buckling devices, and FIG. 7 is an explanatory diagram of the relationship between the buckling device main body and the tongue plate of two sets of buckling devices. 10,150... Buckle device, 12,152
... Buckle device body, 14,154 ... Tongue plate, 64,156 ... Lock plate, 6
6,160... tongue plate locking part, 144,
162...Tongue plate insertion slot, 151, 16
6...Latching hole.

Claims (1)

[Scope of utility model registration request] A combination buckling device for preventing incorrect fitting, which is used in combination when another seatbelt device is arranged near a seatbelt device, and is constituted by a first buckling device and a second buckling device. Each buckle device includes a tongue plate in which a locking opening is formed, and a locking pawl that is provided with a tongue plate insertion opening and that engages with the inserted tongue plate opening. The tongue plate of the first buckling device has a width wider than the opening width of the tongue plate insertion opening of the second buckling device and cannot be inserted, and the tongue plate of the first buckling device has a main body. A combination buckle device for preventing erroneous fitting, characterized in that the locking claw has a claw width wider than the opening width of the tongue plate opening of the second buckle device to enable engagement.