JP5666655B2 - Protective cover - Google Patents

Description

The present invention relates to a protective cover, and more particularly to a protective cover for webbing .

  A three-point seat belt device is provided in the passenger compartment of the automobile. In the three-point seat belt device, the webbing is wound around the retractor, and the tip of the webbing drawn out from the retractor is fixed at a predetermined position. Then, the occupant is restrained by further pulling out the webbing from the retractor, hanging the webbing on the occupant's shoulder, and connecting a tongue provided in the middle of the webbing to the buckle on the side of the seat.

  As a conventional seat belt device, a webbing is generally routed inside the interior member at the side of the vehicle seat, and there is also a webbing routed inside the backrest of the vehicle seat. (For example, refer to Patent Document 1 and Patent Document 2).

  Guide pins are arranged to guide the webbing to a predetermined path, hook the webbing, and turn the webbing back. For example, in Patent Document 1, the guide pin (40) is installed at the upper end of the backrest, the webbing (7) is hooked on the guide pin (40), and the webbing (7) is folded forward by the guide pin (40). It is.

JP-A-8-150893 JP 2002-87208 A

An object of the present invention is to enable webbing protection.

The invention according to claim 1 for solving the above problems is a protective cover for protecting the webbing guided up and down inside the backrest of the vehicle seat, and is provided inside the backrest behind the webbing. A support arm extending vertically along the webbing, and a base provided at a lower end of the support arm, extending from the left edge of the support arm to the left and extending from the right edge of the support arm to the right And provided on the left side of the front surface of the support arm, projecting from the front surface of the support arm, supporting a guide pin, and provided on the right side of the front surface of the support arm, wherein is projectingly provided on the front surface of the support arm, wherein the right guide wall of the guide pins support, wherein the webbing is the left guide wall and the right guide the left guide wall between the wall and the right guide Is guided vertically along the base is a protective cover extending to the right guide wall right than with extending to the left than the left guide wall.

The invention according to claim 2 is a protective cover for protecting the webbing guided up and down inside the backrest of the vehicle seat, and is provided inside the backrest on the rear side of the webbing, and vertically along the webbing. An extended support arm, and a base provided at a lower end of the support arm, extending from the left edge of the support arm to the left and extending from the right edge of the support arm to the right. From the rear surface to the lower surface, it is exposed from the rear surface of the backrest, an insertion hole is formed in the base so as to vertically penetrate the base, the insertion hole opens at a lower portion of the rear surface of the backrest, and the webbing It is a protective cover passed through the insertion hole .

In the invention according to claim 3, the base is exposed from the rear surface of the backrest from the rear surface to the lower surface, and an insertion hole is formed in the base so as to penetrate the base vertically, and the insertion hole is formed in the backrest. The protective cover according to claim 1, wherein the protective cover is opened at a lower portion of the rear surface, and the webbing is passed through the insertion hole.

According to a fourth aspect of the present invention, in the protective cover for protecting the webbing guided up and down inside the backrest of the vehicle seat, the protective cover is provided inside the backrest on the rear side of the webbing, and is vertically moved along the webbing. An extended support arm; a base provided at a lower end of the support arm; extending from the left edge of the support arm to the left and extending from the right edge of the support arm to the right; the support arm and the base is projectingly on the front of the left guide wall for supporting the gas Idopin, is projectingly provided on a front surface of said support arm and said base, and a right guide wall for supporting the front Symbol guide pin, further comprising a through hole is the The left guide wall extends vertically along the left edge of the support arm from the insertion hole to the upper end of the support arm, and the right guide wall is formed to penetrate the base vertically. Extends from serial insertion hole vertically along the right edge of the supporting arm toward the upper end of the support arm, the left guide wall and the right guide wall the webbing between the left guide wall and the right guide wall And the base extends to the left of the left guide wall and extends to the right of the right guide wall, and the base is exposed from the rear surface of the backrest from the rear surface to the lower surface. , the insertion hole is opened in the lower part of the rear surface of the backrest, the webbing is protected cover that has passed through the insertion hole.

The invention according to claim 5 further includes the elastic claw provided on the opposite side of the webbing with respect to the right guide wall on the front side of the base, the base, the elastic claw, the left guide wall, and the right guide. The protective cover according to claim 4, wherein the walls are integrated.
The invention according to claim 6 is the protective cover according to claim 5, wherein the elastic claw is provided on the front side of a portion of the base that extends from the right edge of the support arm. .
The invention according to claim 7 is the protective cover according to any one of claims 2 to 6, wherein a recess is formed from the rear surface to the lower surface of the base, and the insertion hole is provided in the recess.
The invention according to claim 8 is the invention according to any one of claims 1 to 7, wherein the support arm is attached to a belt cover provided inside the backrest, and the base protrudes downward from the belt cover. It is a protective cover.

According to the present invention, webbing can be protected.

It is the perspective view which showed the frame structure of the vehicle seat. It is the schematic longitudinal cross-sectional view which showed a part of the backrest of the said vehicle seat, and a collar part receiving part. It is the perspective view which showed the protective cover, webbing, etc. which are installed in the said vehicle seat. It is the perspective view which showed the state which removed the guide pin from the protective cover installed in the said vehicle seat. It is a principal part enlarged view of the said protective cover. It is the perspective view which showed the state which removed the guide pin and webbing from the said protective cover. It is a principal part enlarged view of the said protective cover.

Hereinafter, preferred embodiments for carrying out the present invention will be described with reference to the drawings. However,
Various embodiments that are technically preferable for carrying out the present invention are given to the embodiments described below, but the scope of the invention is not limited to the following embodiments and illustrated examples.

FIG. 1 is a perspective view showing a frame of a vehicle seat as viewed from the upper left rear. FIG. 2 is a schematic longitudinal sectional view showing a part of the buttock receiving portion 8 and the backrest 9 of the vehicle seat.
As shown in FIGS. 1 and 2, the vehicle seat is connected to the seat bottom frame 2, the center seat back frame 3 connected to the rear end portion of the seat bottom frame 2, and the rear end portion of the seat bottom frame 2. The side seat back frame 4 and the three-point seat belt device 5 are provided.

  The position adjustment mechanism 6 is attached to the floor of the vehicle, and the position of the seat bottom frame 2 is adjusted by the position adjustment mechanism 6. A cushion is attached on the seat bottom frame 2, and the cushion is covered with an outer skin, whereby a buttock receiving portion 8 for the side seat and the center seat is configured.

  The center seat back frame 3 and the side seat back frame 4 are connected to the seat bottom frame 2 in a state where they are arranged side by side, and a reclining mechanism is provided at the connecting portion. The reclining mechanism adjusts the angles of the center seat back frame 3 and the side seat back frame 4 with respect to the seat bottom frame 2.

  A back cushion is provided from the left and right sides of the side seat back frame 4 to the front side, and the back cushion is covered with an epidermis, thereby forming a back seat 9 of the side seat. A cushion is provided from the left and right sides of the center seat back frame 3 to the front side, and the cushion is covered with a skin, thereby forming a backrest of the center seat.

Hereinafter, the seat belt device 5 for a vehicle seat will be described in detail.
The retractor 51 is attached to the lower end of the front end portion of the seat bottom frame 2, and the webbing 52 extends rearward from the retractor 51. The retractor 51 winds up the webbing 52 and allows the webbing 52 to be fed out. The webbing 52 is guided by a hanging portion 53, a hanging portion 54, guide pins 20, 30 and the like.

  A hanging portion 53 is provided at the rear portion of the seat bottom frame 2, and a hanging portion 54 is provided at the upper end of the side seat back frame 4. The webbing 52 is guided from the retractor 51 to the hanging portion 53 under the seat bottom frame 2, and is folded upward by being hooked on the hanging portion 53. Further, the webbing 52 is guided from the hanging portion 53 to the hanging portion 54 inside the backrest 9 and is folded back to the front side of the side seat back frame 4 by being hung on the hanging portion 54. Further, the webbing 52 extends from the upper end of the backrest 9 and is guided up and down along the front surface of the backrest 9 from the hanging portion 54 to the rear end portion of the buttocks receiving portion 8.

  The webbing 52 is passed through the tongue on the front side of the backrest 8, and the tongue can slide along the webbing 52. The webbing 52 is pulled out of the retractor 51 against the winding force of the retractor 51 and the tongue is connected to the buckle, so that the seated person is restrained by the vehicle seat by the webbing 52.

  Inside the backrest 8, a pair of front and rear belt covers 55 and 56 are attached to the side seat back frame 4. The webbing 52 is guided up and down between the belt covers 55 and 56 from the hanging portion 53 to the hanging portion 54.

  A protective cover 80 is attached to the lower part of the rear belt cover 55. The protective cover 80 is formed by integrally forming a base 81 and a support arm 82 extending upward from the base 81. A support arm 82 is attached to the belt cover 55 along the front surface of the rear belt cover 55, and the base 81 protrudes downward from the belt cover 55.

An insertion hole 83 is formed in the base 81. The insertion hole 83 penetrates the base 81 up and down. The insertion hole 83 is provided in a recess 90 formed from the rear surface to the lower surface of the base 81 (see FIGS. 1 and 2). The base 81 is exposed from the rear surface of the backrest 8 from the rear surface to the lower surface, and an insertion hole 83 is opened at the lower rear surface of the backrest 8. The webbing 52 folded upward from the hanging portion 53 is passed through the insertion hole 83 and guided into the backrest 9. The webbing 52 is guided up and down in front of the support arm 82.

FIG. 3 is a perspective view showing the protective cover 80 from the front side.
As shown in FIG. 3, guide walls 84 and 85 are provided on the front side of the support arm 82 and on both the left and right sides thereof. The guide walls 84 and 85 have a rib shape, and are projected on the front surfaces of the base 81 and the support arm 82. The guide walls 84 and 85 extend vertically along the left and right edges of the support arm 82 from the vicinity of the insertion hole 83 to the upper end of the support arm 82. The webbing 52 is guided vertically between the guide walls 84 and 85 along the guide walls 84 and 85.

  Above the insertion hole 83, two guide pins 20 and 30 are attached to the guide walls 84 and 85, and the guide pins 20 and 30 are spanned between the guide wall 84 and the guide wall 85. As shown in FIGS. 2 and 3, the guide pins 20 and 30 are arranged at intervals, and the webbing 52 is passed between the guide pins 20 and 30. When the webbing 52 is sandwiched between the guide pins 20 and 30, the webbing 52 is stabilized. Therefore, flapping of the webbing 52 can be prevented, and the sliding resistance when the webbing 52 is pulled out and rolled up can be reduced.

  4 is a perspective view showing the protective cover 80 from the front side with the guide pins 20 removed. As shown in FIG. 4, the guide pin 20 is formed at a rod-shaped pin body 21, a tip of the pin body 21, a tip 22 having a diameter smaller than the diameter of the pin body 21, A head portion 23 formed at the opposite end and having a diameter larger than the diameter of the pin main body portion 21;

  On the other hand, a support hole 86 is formed in the guide wall 84, and a through hole 87 is formed in the guide wall 85. The support hole 86 and the through hole 87 are coaxial when viewed from the left or right, and the through hole 87 is disposed at a position opposite to the support hole 86.

  The guide pin 20 is inserted into the through hole 87 from the opposite side of the webbing 52 and the guide wall 84 with respect to the guide wall 85. Specifically, the guide pin 20 is passed through the through hole 87 with the tip end portion 22 first, and the tip end portion 22 is fitted into the support hole 86. The diameter of the support hole 86 is equal to the diameter of the distal end portion 22 of the guide pin 20 or slightly larger than the diameter of the distal end portion 22. Further, the diameter of the pin main body 21 is larger than the diameter of the support hole 86. Therefore, the tip surface of the pin main body portion 21 is caught by the guide wall 84 around the support hole 86. Further, the diameter of the head 23 of the guide pin 20 is larger than the diameter of the through hole 87, and the head 23 is caught by the guide wall 85 around the through hole 87.

An elastic claw 25 is provided on the opposite side of the webbing 52 and the guide wall 84 with respect to the guide wall 85 and in the vicinity of the through hole 87. The base end 26 of the elastic claw 25 is installed at a position away from the through hole 87, the distal end 27 of the elastic claw 25 is disposed closer to the through hole 87 than the base end 26, and the elastic claw 25 passes through the distal end 27. Oriented towards 87. The elastic claw 25 is inclined with respect to the axial center of the through hole 87 (the axial center of the guide pin 20), and the elastic claw 25 is viewed in the axial direction of the through hole 87.
The base end 26 is disposed on the radially outer side of the through hole 87 with respect to the front end 27.

  The head 23 of the guide pin 20 is sandwiched between the tip 27 of the elastic claw 25 and the guide wall 85 so that the guide pin 20 cannot be removed from the through hole 87. Further, the elastic claw 25 can be elastically deformed in the radial direction of the through hole 87, and the tip 27 of the elastic claw 25 is separated from the head 23 by the radial load of the through hole 87 acting on the elastic claw 25. Therefore, the guide pin 20 can be extracted.

  Like the guide pin 20, the guide pin 30 is prevented from coming off by the elastic claw 35. Since the guide pin 30 and the elastic claw 35 are provided in the same manner as the guide pin 20 and the elastic claw 25 except for their installation positions, detailed descriptions of the guide pin 30 and the elastic claw 35 are omitted.

Next, a method for arranging the webbing 52 will be described.
First, the tip of the guide pin 30 is inserted into the through hole of the guide wall 85 first, and the guide pin 30 is prevented from coming off by the elastic claw 35 (see FIG. 6). The method for attaching the guide pin 30 is the same as the method for attaching the guide pin 20 to be described later, and a detailed description thereof will be omitted here.

  Next, the webbing 52 is pulled out from the retractor 51, the webbing 52 is passed through the insertion hole 83 of the protective cover 80, and the webbing 52 is guided between the guide walls 84 and 85 along the guide walls 84 and 85 (see FIG. 4). . Then, the webbing 52 is hung on the hanging parts 53 and 54, and the front end of the webbing 52 is connected to the rear end part of the flange receiving part 8.

  Next, as shown in FIGS. 4 and 7, the guide pin 20 is inserted into the through hole 87 with the tip 22 of the guide pin 20 first. As the guide pin 20 is inserted, the head 23 comes into contact with the elastic claw 25. Further, when the head 23 is pushed in and the guide pin 20 is inserted into the through hole 87, the elastic claw 25 is pushed by the head 23 and intersects the axis of the guide pin 20 (the diameter of the through hole 87. Direction) is elastically bent. Thus, when the distal end portion 22 of the guide pin 20 is inserted into the support hole 86, the head portion 23 is detached from the distal end 27 of the elastic claw 25 toward the guide wall 85. Then, the elastic claw 25 is released from being pushed by the head 23 of the guide pin 20, and the elastic claw 25 is restored (see FIG. 5). Therefore, the head 23 is sandwiched between the tip 27 of the elastic claw 25 and the guide wall 85 at the edge portion. Further, the head 23 is caught by the guide wall 85 around the through hole 87 (see FIG. 5). This prevents the guide pin 20 from coming off.

  Next, the belt covers 55 and 56 are attached to the side seat back frame 4, and the support arms 82 of the protective cover 80 are attached to the belt cover 56.

  As described above, according to the present embodiment, the elastic claw 25 is pushed by the head portion 23 of the guide pin 20 and elastically deformed simply by inserting the guide pin 20 into the through hole 87. When the guide pin 20 is fully inserted, the elastic claw 25 returns to its original position and the guide pin 20 is prevented from coming off. Thus, it is possible to achieve both prevention of the guide pin 20 from being detached and simple installation of the guide pin 20. The same applies to the guide pin 30.

Moreover, since the two guide pins 20 and 30 are attached to one member (protective cover 80), the positional relationship between the guide pins 20 and 30 is stabilized, and the webbing 52 can be stably guided. That is, if the two guide pins 20 and 30 are attached to separate members and these members are attached to the side seat back frame 4, the positional relationship between the guide pins 20 and 30 is not stable due to a design error. In this case, the guide pins 20 and 30 may approach each other, and the parallelism of the guide pins 20 and 30 may decrease, and the webbing 52 may flutter and slide resistance may occur. On the other hand, in this embodiment, since the two guide pins 20 and 30 are attached to the protective cover 80 in advance, and then the protective cover 80 is attached to the belt cover 56, the occurrence of such problems can be suppressed. .

  The embodiments to which the present invention can be applied are not limited to the above-described embodiments, and can be appropriately changed without departing from the spirit of the present invention. Hereinafter, although a modification is given, the present invention is not limited to the following modification. Further, the following modifications may be combined as much as possible.

[Modification A]
In the above embodiment, the diameter of the head portion 23 of the guide pin 20 is larger than the diameter of the through hole 87, but the diameter of the head portion 23 is equal to the diameter of the through hole 87 or smaller than the diameter of the through hole 87. Good. However, the diameter of the pin main body 21 is larger than the diameter of the support hole 86 so that the guide pin 20 does not come out from the through hole 87 toward the guide wall 84, and the tip surface of the pin main body 21 is caught by the guide wall 84. It is desirable to make it.

[Modification B]
In the above embodiment, the diameter of the pin main body 21 is larger than the diameter of the support hole 86, but the diameter of the pin main body 21 may be equal to the diameter of the support hole 86 or smaller than the diameter of the support hole 86. However, it is desirable that the diameter of the head 23 is larger than the diameter of the through hole 87 so that the guide pin 20 does not come out from the through hole 87 to the guide wall 84 side.

[Modification C]
In the above-described embodiment, the guide pin 20 is supported in the form of a cantilever beam. However, the guide pin 20 may be supported in the form of a cantilever without the distal end portion 22 of the guide pin 20 being inserted into the support hole 86. In this case, in order to prevent the guide pin 20 from rattling, it is preferable that the guide wall 85 is thickened or that there is no play between the pin main body 21 and the wall surface of the through hole 87.

[Modification D]
The hooks 53 and 54 are also formed in the same shape as the guide pins 20 and 30, and the hooks 53 and 54 are installed in the same manner as the guide pins 20 and 30 are installed to prevent the hooks 53 and 54 from being pulled out. It may be prevented.

[Modification E]
In the above embodiment, the webbing 52 is guided by the guide pins 20 and 30 when the seatbelt device 5 is installed in the vehicle seat. On the other hand, when the seat belt device is installed in the interior member on the side of the seat, the guide pin is installed in the same manner as the guide pins 20 and 30 when the webbing is guided by the guide pins. Removal may be prevented by the nail.

[Modification F]
In the above embodiment, the present invention is applied to a seat belt device provided in a passenger compartment of an automobile. However, the present invention is applied to a seat belt device installed in a passenger compartment of another vehicle (for example, an aircraft, a ship, etc.). May be.

[Modification G]
Moreover, although the elastic member was the elastic claw 25 formed in the nail shape in the said embodiment, the shape may not be a nail shape. For example, a leaf spring inclined like the elastic claw 25 may be used, or another shape may be used. That is, any elastic member that is pushed by the head 23 of the guide pin 20 and elastically deforms in the radial direction of the through hole 87 when the guide pin 20 is inserted into the through hole 87 may be used.

  9 Backrest
  20, 30 Guide pin
  25, 35 elastic nails
  52 Webbing
  55,56 Belt cover
  80 protective cover
  81 base
  82 Supporting arm
  83 Insertion hole
  84, 85 guide wall

Claims (8)

In a protective cover for protecting the webbing guided up and down inside the backrest of the vehicle seat,
A support arm provided inside the backrest on the rear side of the webbing and extending vertically along the webbing;
A base provided at a lower end of the support arm, extending from the left edge of the support arm to the left and extending from the right edge of the support arm to the right;
A left guide wall that is provided on the left side of the support arm and is provided on the left side of the support arm, is provided on the front surface of the support arm, and supports the guide pin;
Provided on the right side a front surface of the support arm, it is projectingly provided on the front surface of the support arm, and a right guide wall that supports the guide pin,
The webbing is guided up and down along the left guide wall and the right guide wall between the left guide wall and the right guide wall,
The base extends to the left of the left guide wall and extends to the right of the right guide wall;
Protection cover. In a protective cover for protecting the webbing guided up and down inside the backrest of the vehicle seat,
A support arm provided inside the backrest on the rear side of the webbing and extending vertically along the webbing;
A base provided at a lower end of the support arm, extending from the left edge of the support arm to the left and extending from the right edge of the support arm to the right; and
The base is exposed from the rear surface of the backrest from the rear surface to the lower surface, an insertion hole is formed in the base so as to penetrate the base up and down, and the insertion hole opens at a lower portion of the rear surface of the backrest, The webbing is passed through the insertion hole,
Protection cover. The base is exposed from the rear surface of the backrest from the rear surface to the lower surface, an insertion hole is formed in the base so as to penetrate the base up and down, and the insertion hole opens at a lower portion of the rear surface of the backrest, The webbing is passed through the insertion hole,
The protective cover according to claim 1 . In a protective cover for protecting the webbing guided up and down inside the backrest of the vehicle seat,
A support arm provided inside the backrest on the rear side of the webbing and extending vertically along the webbing;
A base provided at a lower end of the support arm, extending from the left edge of the support arm to the left and extending from the right edge of the support arm to the right;
A left guide wall the support arms and is projectingly provided on a front surface of the base, for supporting the gas Idopin,
It said support arms and is projectingly provided on a front surface of the base, further comprising a right guide wall for supporting the front Symbol guide pins, and
An insertion hole is formed in the base so as to penetrate the base up and down,
The left guide wall extends up and down along the left edge of the support arm from the insertion hole to the upper end of the support arm,
The right guide wall extends up and down along the right edge of the support arm from the insertion hole to the upper end of the support arm,
The webbing is guided up and down along the left guide wall and the right guide wall between the left guide wall and the right guide wall,
The base extends to the left of the left guide wall and extends to the right of the right guide wall;
The base is exposed from the rear surface of the backrest from the rear surface toward the lower surface, the insertion hole is opened in the lower part of the rear surface of the backrest, the webbing is threaded through the insertion hole,
Protection cover. The elastic claw further provided on the opposite side of the webbing with respect to the right guide wall on the front side of the base,
The base, the elastic claw, the left guide wall, and the right guide wall are integrated.
The protective cover according to claim 4. The elastic claw is provided on the front side of a portion of the base that extends from the right edge of the support arm,
The protective cover according to claim 5. A recess is formed from the rear surface to the lower surface of the base, and the insertion hole is provided in the recess.
The protective cover as described in any one of Claim 2 to 6. The support arm is attached to a belt cover provided inside the backrest,
The base protrudes downward from the belt cover;
The protective cover as described in any one of Claim 1 to 7.

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