JP5112938B2 - Buckle device - Google Patents

Description

  The present invention relates to a buckle device constituting a seat belt device of a vehicle.

Conventionally, there is a vehicle seat belt device in which a buckle is connected to an anchor plate via a webbing (see, for example, Patent Document 1). In this seat belt device, the webbing is covered with a protective boot formed in a cylindrical shape, and the buckle and the webbing are supported in an upright state by the protective boot.
Japanese Utility Model Publication No. 7-35203

  By the way, in the seat belt apparatus as described above, it is necessary to sew the webbing when the buckle and the anchor plate (anchor member) are connected by the webbing. For this reason, there is a limit to shortening the length dimension of the webbing, and the height dimension from the vehicle body floor portion to the buckle upper end portion in the standing state is increased. For this reason, when applied to a vehicle seat having a low height dimension from the vehicle body floor to the seating surface, the amount of protrusion of the buckle from the seating surface increases, causing problems such as deterioration in appearance. .

  In consideration of the above fact, the present invention can support the buckle connected to the anchor member via the webbing in an upright state with respect to the vehicle body floor, and the height dimension from the vehicle body floor to the upper end of the buckle. It is an object to obtain a buckle device that can lower the height.

  A buckle device according to a first aspect of the present invention is a buckle device constituting a seat belt device of a vehicle, wherein an anchor member fixed to a floor portion of a vehicle body, one side is connected to the anchor member, and the floor A webbing disposed along the webbing portion, a buckle connected to the other side of the webbing, a mounting part mounted on the buckle, and an extending part extended from the mounting part and locked to the webbing And a support member that supports the buckle in an upright state.

  In the buckle device according to the first aspect, one side of the webbing arranged along the floor portion of the vehicle body is connected to the anchor member fixed to the floor portion of the vehicle body. A buckle is connected to the other side of the webbing, and a mounting portion for a support member is mounted on the buckle. The support member includes an extension portion extended from the mounting portion and locked to the webbing, and the buckle is supported in an upright state by the support member. In addition, since the webbing is disposed along the vehicle body floor, the height dimension from the vehicle body floor to the upper end of the buckle (the tip, the end opposite to the side to which the webbing is connected) can be reduced. it can.

  The buckle device according to a second aspect of the present invention is the buckle device according to the first aspect, wherein the mounting portion is formed in a cylindrical shape, and at least a base end side of the buckle is fitted inside. It is a feature.

  In the buckle device according to claim 2, the mounting portion of the support member is formed in a cylindrical shape, and at least the base end side of the buckle (the lower end side in the standing state; the side to which the webbing is connected) inside the mounting portion. ) Is fitted. For this reason, for example, when a switch or the like is attached to the proximal end side of the buckle, the switch or the like can be protected by the mounting portion.

  The buckle device according to a third aspect of the present invention is the buckle device according to the first or second aspect, wherein the extension portion is formed in a plate shape and is disposed between the webbing and the floor portion. It is characterized by being.

  In the buckle device according to claim 3, the extending portion of the support member is formed in a plate shape, and the extending portion is disposed between the webbing disposed along the vehicle body floor portion and the vehicle body floor portion. Is done. For this reason, the arrangement space of the extension part can be reduced.

  The buckle device according to a fourth aspect of the present invention is the buckle device according to any one of the first to third aspects, wherein the extending portion extends from the mounting portion in the support member. The buckle is supported in an upright state by being locked to the webbing while being bent in a different direction.

  In the buckle device according to the fourth aspect, the extending portion of the support member is locked to the webbing in a state of being bent in a direction different from the extending direction from the mounting portion. Therefore, for example, when the support member is formed by injection molding of a resin material, the extending direction of the extending portion from the mounting portion can be set in consideration of the ease of mold design and the like. . Therefore, it is possible to reduce the manufacturing cost of the support member including the mold.

  The buckle device according to a fifth aspect of the present invention is the buckle device according to the fourth aspect, wherein the extension portion has a sewing portion that is sewn to the webbing, and the support member is the extension member. In the bent state of the portion, the sewing portion is closer to the base end side of the buckle than before the bending and is sewn to the webbing to support the buckle in an upright state.

  In the buckle device according to claim 5, the support member has the extended portion bent, and the sewn portion provided in the extended portion is closer to the proximal end side of the buckle than before the bending. The buckle is supported by being sewn on the webbing. As described above, the buckle can be supported in an upright state by adjusting the sewing position between the sewing portion of the extending portion and the webbing, and thus the support member can be configured simply.

  As described above, in the buckle device according to the present invention, the buckle connected to the anchor member via the webbing can be supported in an upright state with respect to the vehicle body floor portion, and the upper end portion of the buckle from the vehicle body floor portion. The height dimension up to can be reduced.

  FIG. 1 is a cross-sectional view showing a configuration of peripheral members including a buckle device 10 according to an embodiment of the present invention. Further, FIG. 2 shows the buckle device 10 in a perspective view. In the figure, the arrow UP indicates the upward direction of the vehicle on which the buckle device 10 is mounted, and the arrow W indicates the width direction of the vehicle.

  As shown in FIG. 1, the buckle device 10 according to the present embodiment constitutes a seat belt device 11 (only part of which is shown) of a rear seat 12 of a vehicle. The rear seat 12 is attached to the upper surface of a rear floor pan 14 (floor portion) of the vehicle body, and an anchor plate 16 (anchor member) constituting the buckle device 10 is disposed on the upper surface of the rear floor pan 14.

  The anchor plate 16 is formed by bending a metal plate material into a substantially square shape, and is fastened to the rear floor pan 14 by bolts 18 and nuts (not shown). A slit-like through hole 20 is formed on one end side of the anchor plate 16 (left side in FIGS. 1 and 2). One end side in the longitudinal direction of a webbing 22 formed in a belt shape from a chemical fiber or the like is inserted into the through hole 20. One end in the longitudinal direction of the webbing 22 inserted through the through hole 20 is wound around the hole edge of the through hole 20, and one end in the longitudinal direction of the webbing 22 is overlapped with the middle portion in the longitudinal direction of the webbing 22. It is sewn. Thus, one side of the webbing 22 (the right side of the webbing 22 in FIGS. 1 and 2) is connected to the anchor plate 16.

  On the other hand, a buckle 24 is provided on the other side of the webbing 22 (left side of the webbing 22 in FIGS. 1 and 2). The buckle 24 is for locking a tongue plate 26 attached to the webbing 13 for restraining an occupant seated on the rear seat 12, and is formed in a block shape. An insertion hole (not shown) for inserting a locking piece 26 </ b> A provided on the tongue plate 26 is provided at the distal end portion (upper end portion in FIGS. 1 and 2) of the buckle 24. Further, a connecting piece 28 formed of a metal plate shape is attached to the base end portion (the lower end portion in FIGS. 1 and 2) of the buckle 24.

  A slit-like through hole 30 is formed in the connecting piece 28, and the other end in the longitudinal direction of the webbing 22 is inserted into the through hole 30. The other end in the longitudinal direction of the webbing 22 inserted through the through hole 30 is wound around the hole edge of the through hole 30, and the other longitudinal end of the webbing 22 is connected to the longitudinal intermediate portion of the webbing 22 and the webbing. The overlapped portion with the one longitudinal end portion of 22 is overlapped and sewn. Thus, the other side of the webbing 22 (left side of the webbing 22 in FIGS. 1 and 2) is connected to the buckle 24, and the buckle 24 and the anchor plate 16 are connected by the webbing 22. The webbing 22 is arranged along the rear floor pan 14 as shown in FIG.

  Further, the buckle device 10 includes a boot 32 (support member) for supporting the buckle 24 in an upright state with respect to the rear floor pan 14. The boot 32 is formed of a soft resin material, and includes a mounting portion 32A formed in a substantially rectangular tube shape, and one end portion of the mounting portion 32A (the lower end portion in FIGS. 1 and 2). And a long plate-like extension part 32B extending from the unit. The mounting portion 32A and the extension portion 32B are both flexible and can be elastically deformed.

  The base end side of the buckle 24 is fitted to the inner side of the mounting portion 32A from the opening portion on the other end side (the upper opening portion in FIGS. 1 and 2), whereby the mounting portion 32A is attached to the buckle 24. Has been. A buckle switch 34 (see FIG. 1) for detecting whether or not the tongue plate 26 is locked to the buckle 24 is attached to the base end portion of the buckle 24. It is housed inside the mounting portion 32A.

  On the other hand, the extending portion 32B is disposed between the webbing 22 and the rear floor pan 14. A pair of through-holes 38 (sewing parts) are formed in the intermediate part in the longitudinal direction of the extension part 32B, and the extension part 32B is sewn to the webbing 22 by the thread 40 inserted through these through-holes 38. It has been. Thus, the boot 32 supports the buckle 24 in an upright state, and the upper end side (front end side) of the buckle 24 is located above the seat surface 12A of the rear seat 12 via the buckle arrangement hole 36 formed in the rear seat 12. Project slightly (for example, about a few centimeters).

In the present embodiment, as shown in FIG. 3, the extended portion 32B of the boot 32 is molded in a state of extending in the axial direction of the mounting portion 32A and is sewn to the webbing 22. The proximal end side is elastically bent in a direction different from the extending direction (a direction perpendicular to the axial direction of the mounting portion 32A). And the relative position of webbing 22 and extension part 32B is adjusted, and both are sewn so that mounting part 32A and buckle 24, extension part 32B, and webbing 22 may be arranged in L shape. It has become. That is, the extension 32B is sewn to the webbing 22 in a state where the pair of through holes 38 are closer to the connecting piece 28 side (base end side of the buckle) of the buckle 24 than before the extension 32B is bent. By being attached, the boot 32 is configured to support the buckle 24 in an upright state. Next, the operation of the present embodiment will be described.

  In the buckle device 10 configured as described above, one side of the webbing 22 is connected to the anchor plate 16 fastened to the rear floor pan 14. A buckle 24 is connected to the other side of the webbing 22, and a mounting portion 32 </ b> A of a boot 32 is attached to the buckle 24. The boot 32 includes an extended portion 32B that extends from the mounting portion 32A and is sewn to the webbing 22, and the buckle 24 is supported by the boot 32 in an upright state. As a result, the buckle 24 is held in a state in which the tip side slightly protrudes from the seating surface 12A of the rear seat 12, and the buckle 24 is held in a state in which a seated occupant seated on the rear seat 12 can easily grip the buckle 24. . Therefore, the operability when the seated occupant locks the tongue plate 26 on the buckle 24 is good.

  In addition, in the present embodiment, since the webbing 22 is disposed along the rear floor pan 14, the height dimension H from the rear floor pan 14 to the tip (upper end) of the buckle 24 is set low. Accordingly, even when the buckle device 10 is applied to the rear seat 12 having a low height dimension from the rear floor pan 14 to the seating surface 12A as in the present embodiment, the protrusion amount of the buckle 24 from the seating surface 12A. Can be kept low. Thereby, the appearance of the rear seat 12 can be improved.

  In the present embodiment, since the webbing 22 is disposed along the rear floor pan 14, the webbing 22 can be compactly disposed in the gap between the rear seat 12 and the rear floor pan 14. Moreover, since the extended portion 32B of the boot 32 is formed in a plate shape and is disposed between the webbing 22 and the rear floor pan 14, the extended portion 32B can be compactly disposed in the gap together with the webbing 22. . Therefore, it is possible to suppress the arrangement space of the extending portion 32B and the webbing 22 from restricting the shape or the like of the rear seat 12, and thereby the degree of freedom in designing the rear seat 12 can be improved.

  In the present embodiment, the buckle 24 is connected to the anchor plate 16 by the webbing 22, and the boot 32 that supports the buckle 24 in an upright state has flexibility. For this reason, even if the seat occupant's buttocks interfere with the upper end of the buckle 24, the boot 32 and the webbing 22 bend to allow the buckle 24 to be displaced. The comfort of the seated occupant can be ensured.

  Furthermore, in this embodiment, the mounting portion 32A of the boot 32 is formed in a cylindrical shape, and the buckle switch 34 attached to the proximal end portion of the buckle 24 is accommodated inside the mounting portion 32A. For this reason, since the buckle switch 34 can be protected by the mounting portion 32A, a dedicated member for protecting the buckle switch 34 can be omitted.

  Further, in the present embodiment, the extending portion 32B of the boot 32 is formed in a state extending in the axial direction of the cylindrical mounting portion 32A, and when the base end side is sewn to the webbing 22, It is configured to be bent in a direction different from the outgoing direction. For this reason, compared with the case where the boot 32 is molded in a state where the extending portion 32B extends in a direction different from the axial direction of the mounting portion 32A (see FIG. 4), the structure of the molding mold of the boot 32 is simplified. Can be a thing. Accordingly, the manufacturing cost of the boot 32 including the molding die of the boot 32 can be reduced.

  Further, in the present embodiment, the extension portion 32B of the boot 32 is bent, and the extension portion 32B is sewn to the webbing 22 with the pair of through holes 38 approaching the connecting piece 28 side of the buckle 24. Thus, the boot 32 supports the buckle 24 in an upright state. Thus, by adjusting the sewing position of the pair of through holes 38 and the webbing 22, the buckle 24 can be supported in an upright state, so that the configuration of the boot 32 can be simplified.

  In the above embodiment, the boot 32 as the support member has the cylindrical mounting portion 32A. However, the present invention is not limited to this, and the mounting portion of the support member can be mounted on the buckle. What is necessary is just to be a thing, and the shape of a mounting part can be changed suitably.

  Moreover, in the said embodiment, although the boot 32 as a support member was set as the structure provided with the plate-shaped extension part 32B, this invention is not restricted to this, The extension part of a support member is latched by webbing. The shape of the extending portion can be changed as appropriate.

  In the above embodiment, the boot 32 is formed in a state where the extending portion 32B extends in the axial direction of the mounting portion 32A (shown in FIG. 3), but the present invention is not limited to this. 4, the boot 32 may be formed in a state in which the extending portion 32B extends in a direction different from the axial direction of the mounting portion 32A.

  Moreover, although the said embodiment demonstrated the case where the buckle apparatus 10 was applied with respect to the rear seat 12 of a vehicle, it is not restricted to this, The buckle apparatus of this invention is applied also to the other seat of a vehicle. be able to.

It is a longitudinal cross-sectional view which shows the structure of the peripheral member containing the buckle apparatus which concerns on embodiment of this invention. It is a perspective view of the buckle device concerning the embodiment of the present invention. It is a perspective view of a boot which is a component of a buckle device concerning an embodiment of the present invention. It is a perspective view which shows the modification of the boot shown by FIG.

Explanation of symbols

10 Buckle device 11 Seat belt device 12 Rear seat 14 Rear floor pan (floor portion of vehicle body)
16 Anchor plate (anchor member)
22 Webbing 24 Buckle 32 Boot (support member)
32A Mounting part 32B Extension part 38 Through hole (sewing part)

Claims (5)

A buckle device constituting a seat belt device of a vehicle,
An anchor member fixed to the floor of the vehicle body;
A webbing having one side connected to the anchor member and disposed along the floor;
A buckle connected to the other side of the webbing;
A support member that has an attachment part attached to the buckle and an extension part that extends from the attachment part and engages with the webbing, and supports the buckle in an upright state;
Buckle device equipped with.   The buckle device according to claim 1, wherein the mounting portion is formed in a cylindrical shape, and at least a base end side of the buckle is fitted inside.   The buckle device according to claim 1 or 2, wherein the extension portion is formed in a plate shape and is disposed between the webbing and the floor portion.   The support member supports the buckle in an upright state by being locked to the webbing in a state in which the extending portion is bent in a direction different from the extending direction from the mounting portion. The buckle device according to any one of claims 1 to 3.   The extension portion has a sewing portion that is sewn to the webbing, and the support member has a base end side of the buckle in the bent state of the extension portion as compared with that before the bending of the sewing portion. 5. The buckle device according to claim 4, wherein the buckle is supported in an upright state by being approached to and sewn to the webbing.

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