JP2007283832A - Mounting structure of seat belt retractor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To establish compatibly the prevention of the noise emission and enhancement of the working effectiveness in mounting without requiring an increase in the number of component parts or a severe management of the dimensional accuracy. <P>SOLUTION: Insertion part 13 of an upper stay 12 includes an upper projecting part 14 welling out to one side and a lower projecting part 15 located below it 14 and swelling out to the other side. The provisionally held condition in which the insertion part 13 is inserted into a hole 21 from one side of a body panel 20 and a lower stay 16 is arranged opposite to the part for mounting 22, is maintained owing to the introduced arrangement such that the upper projecting part 14 contacts the other surface of the body panel 20 in a position over the insertion hole 21 while the lower projecting part 15 contacts the lower part of the peripheral edge of the insertion hole 21. When the lower stay 16 in the provisionally held condition is fixed to the part for mounting 22 using bolt 40 and nut 26, the lower stay 16 approaches the part 22 while the upper projecting part 14 is held in contact with the body panel 20 by an elastic deformation of the upper stay 12, and a seat belt retractor 10 is attached to the body panel 20. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a structure for attaching a seat belt retractor to a body panel of a vehicle.

  Japanese Utility Model Laid-Open No. 58-160058 discloses a seat belt retractor that includes a retractor body, and a locating pin portion and a stay portion that respectively extend in the vertical direction from the retractor body. The stay portion is formed with an insertion hole through which a bolt for fixing to the vehicle body is inserted.

  As shown in FIGS. 6A to 6D, the locate pin portion has a hook portion 51 that is inserted into the hole 71 of the vehicle body 70 through the hole 61 of the dust cover 60 and fixed. The hook portion 51 has a horizontal portion 52 and a vertical portion 53, and each of the horizontal portion 52 and the vertical portion 53 has a tapered portion 54 that is tapered. The maximum width of the tapered portion 54 is larger than the hole 61 of the dust cover 60, and the minimum width is smaller than the hole 61.

  When attaching the seat belt retractor to the vehicle body 70, the dust cover 60 is housed in the dust cover housing portion provided in the vehicle body 70, the hole 61 at the top of the dust cover 60 and the hole 71 of the vehicle body 70 are aligned, and the locating pin portion The vertical portion 53 of the hook portion 51 is leveled and inserted into the hole 61 of the dust cover 60 (FIG. 6A), and the main body is rotated (FIGS. 6B and 6C). When the vertical portion 53 of the hook portion 51 reaches the vertical direction, the final portion of the hook portion 51 having a width larger than the width of the hole 61 of the dust cover 60 is forcibly closely fitted into the hole 61 (FIG. 6 ( d)). In such a state, the lower stay portion is fixed to the vehicle body with bolts. As a result, the seat belt retractor is held by the vehicle body 70.

Japanese Utility Model Publication No. 58-160058

  In the above mounting structure, the seat belt retractor is temporarily held with respect to the vehicle body 70 by forcibly closely fitting the final portion of the hook portion 51 having a width larger than the width of the hole 61 of the dust cover 60 into the hole 61. The seat belt retractor is attached to the vehicle body 70 by fixing the lower stay portion to the vehicle body 70 with bolts from the temporarily held state. 6A to 6D, when the lower stay portion 56 is fixed to the vehicle body 70 by the bolt, the cross section of the hook portion 51 of the locate pin portion is particularly deformed from the temporary holding state. Maintain the same shape. Therefore, the mounting strength on the upper side of the seat belt retractor depends only on the tightly-fitted state of the hook portion 51 and the hole 61, and prevents the generation of abnormal noise (lower sound) when receiving vibration from the vehicle. For this, it is necessary to set a large dimensional difference between the final portion of the hook portion 51 and the hole 61 to increase the tight fit between the two.

  However, if the dimensional difference between the final portion of the hook portion 51 and the hole 61 is set large, the insertion force when the hook portion 51 is set in the temporary holding state becomes excessive, and the workability during insertion naturally decreases. For this reason, it is difficult for the mounting structure to achieve both the prevention of abnormal noise and the improvement of mounting workability. Further, since the mounting strength of the seat belt retractor with respect to the vehicle body is determined by the dimensional difference between the hook portion 51 and the hole 61, it is necessary to strictly manage the dimensional accuracy at the time of manufacturing, resulting in an increase in manufacturing cost.

  In the above mounting structure, it is possible to interpose a rubber member or the like that absorbs vibration between the locate pin portion and the vehicle body 70 for the purpose of preventing the occurrence of abnormal noise. This causes a drop in installation workability.

  The present invention has been made in view of the above circumstances, and is intended to achieve both prevention of abnormal noise and improvement of mounting workability without accompanying strict control over the number of parts and dimensional accuracy. It is an object of the present invention to provide a seat belt retractor mounting structure that can be used.

  In order to achieve the above object, the present invention provides a seat belt retractor mounting structure for mounting a seat belt retractor on a body panel having an upper insertion hole and a lower mounted portion, and the seat belt retractor includes a retractor body. And a lower stay that extends downward from the retractor body and is fixed to the mounted portion by a mounting member, and an upper stay that has an insertion portion that extends upward from the retractor body and is inserted into the insertion hole.

  The insertion portion includes an upper protruding portion that bulges in one direction and a lower protruding portion that bulges in the other direction below the upper protruding portion, and inserts the insertion portion into the insertion hole from one side of the body panel. In the temporary holding state in which the lower stay is disposed on one side of the body panel so as to face the mounted portion, the upper protruding portion is in contact with the other surface side of the body panel above the insertion hole and the lower protruding portion is in contact with the lower peripheral edge of the insertion hole. Thus, the temporary holding state is maintained.

  When the lower stay in the temporarily held state is fixed to the mounted portion by the mounting member, the lower stay is closer to the mounted portion than in the temporarily held state while the upper projecting portion is in contact with the other side of the body panel due to the elastic deformation of the upper stay. As a result, the seat belt retractor is attached to the body panel.

  In the above configuration, when the seat belt retractor is attached to the body panel, the seat belt retractor is formed by inserting the insertion portion of the upper stay into the insertion hole of the body panel and disposing the lower stay opposite the attachment portion on one surface side of the body panel. Is set to the temporary holding state, and the lower stay is fixed to the mounted portion of the body panel by the mounting member from the temporary holding state.

  The temporary holding state is maintained by contacting the upper projecting portion and the other side of the body panel above the insertion hole, and contacting the lower projecting portion and the lower peripheral edge of the insertion hole. That is, since the temporary holding state is maintained without tightly fitting the insertion hole and the upper stay, the portion of the upper stay that is inserted into the insertion hole can be set to a dimension that can be easily inserted into the insertion hole. Thus, the seat belt retractor can be set to the temporary holding state without being accompanied by strict management of workability reduction and dimensional accuracy.

  In addition, when the lower stay in the temporarily held state is fixed to the mounted portion by the mounting member, the lower stay is placed on the mounted portion more than in the temporarily held state while the upper protruding portion is in contact with the other side of the body panel due to the elastic deformation of the upper stay. Proximity. That is, the retractor body is elastically held with respect to the body panel by the deformation of the upper stay above the retractor body. For this reason, a seatbelt retractor can be firmly attached with respect to a body panel, without causing the fall of assembly workability | operativity.

  Furthermore, since the seat belt retractor is elastically held with respect to the body panel by the deformation of the upper stay, this elastic holding contributes to the absorption of vibrations input from the vehicle. Therefore, it is possible to satisfactorily prevent the generation of abnormal noise without causing a decrease in assembly workability or an increase in the number of parts.

  According to the present invention, there is provided a seatbelt retractor mounting structure capable of achieving both prevention of abnormal noise and improvement in mounting workability without accompanying strict control over the number of parts and dimensional accuracy. Can be provided.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a front view showing a state in which a seat belt retractor according to the present embodiment is attached to a body panel of a vehicle body, FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 4A is a sectional view showing a state in which the upper stay of the seat belt retractor is inserted into the insertion hole of the body panel, and FIG. 4B is a state in which the seat belt retractor is temporarily held. FIG. 5 is an enlarged view of a main part of FIG. 4B. In the following description, the vertical direction is the vertical direction of the vehicle body.

  As shown in FIGS. 1 to 3, the seat belt retractor 10 includes a retractor body 11, an upper stay 12, and a lower stay 16. The retractor body 11 includes a seat belt 30 winding mechanism.

  The upper stay 12 is a metal or resin plate having a predetermined elasticity, and a lower portion thereof is fixed to one surface side (right side in FIG. 2) of the retractor body 11 and extends upward. An insertion portion 13 having a substantially S-shaped cross section having an upper protruding portion 14 and a lower protruding portion 15 is bent at the upper end portion of the upper stay 12. The upper protrusion 14 bulges in one direction (right direction in FIG. 2) in a curved shape, and the lower protrusion 15 bulges in a curved direction in the other direction (left direction in FIG. 2) below the upper protrusion 14. To do.

  The lower stay 16 is a plate made of metal or resin, and its upper part is fixed to one surface side (right side in FIG. 2) of the retractor body 11 and extends downward. A bolt insertion hole 17 through which a bolt 40 as an attachment member is inserted is formed at the lower end portion of the lower stay 16. Note that the lower stay 16 may also have a predetermined elasticity like the upper stay 12.

  In the body panel 20, a main body insertion hole 23 into which the other surface side (left side in FIG. 2) of the retractor main body 11 is inserted, and an insertion portion 13 of the upper stay 12 that is disposed above the main body insertion hole 23 are inserted. An insertion hole 21 is formed. The lower part of the main body insertion hole 23 in the body panel 20 constitutes a mounted portion 22 to which the lower stay 16 is fixed. A reinforcing plate 25 is fixed to the back surface (left surface in FIG. 2) of the attached portion 22 in a state of surface contact. A bolt insertion hole 27 through which the bolt 40 is inserted is formed in the mounted portion 22 and the reinforcing plate 25, and a nut 26 as a mounting member screwed to the bolt 40 is fixed to the back surface of the reinforcing plate 25. Yes.

  When the seat belt retractor 10 is set in a temporary holding state to be described later, the lower stay 16 is disposed at a position separated from the surface of the attached portion 22 (the right side surface in FIG. 2) by a predetermined distance. The bolt insertion hole 27 is disposed at a position where the tip of a bolt 40 that passes through the bolt insertion hole 17 of the lower stay 16 in the temporary holding state can be inserted.

  Further, the width of the insertion hole 21 in the lateral direction (left-right direction in FIG. 1) is slightly smaller than the width of the insertion part 13 so as to restrict the lateral movement and rotation of the insertion part 13 inserted into the insertion hole 21. Is set to be large.

  When the seat belt retractor 10 is attached to the body panel 20, as shown in FIG. 4A, the insertion portion 13 of the upper stay 12 is inserted from the surface side of the body panel 20 (right side in FIG. 4A) to the insertion hole 21. insert. By such insertion, the upper projecting portion 14 and the lower projecting portion 15 of the insertion portion 13 are inserted into the back surface side of the body panel 20.

  Next, with the insertion portion 13 being inserted into the insertion hole 21, the lower part of the seat belt retractor 10 (lower stay 16 side) is moved toward the surface of the body panel 20, and the lower stay 16 is opposed to the attached portion 22, As shown in FIG. 4B, the seat belt retractor 10 is set to the temporary holding state. In this temporary holding state, the weight of the seat belt retractor 10 acts, and as shown in FIG. 5, the lower protrusion 15 contacts the lower peripheral edge of the insertion hole 21 and the upper protrusion 14 above the insertion hole 21. It contacts the back surface of the body panel 20 while being pressed. That is, due to the weight of the seat belt retractor 10, the insertion portion 13 (upper protrusion portion 14) tries to rotate and move toward the back surface of the body panel 20 around the contact point between the lower protrusion portion 15 and the lower peripheral edge of the insertion hole 21. However, this movement is prevented by the upper protrusion 14 coming into contact with the back surface of the body panel 20. Thereby, the insertion part 13 is prevented from coming off from the insertion hole 21, and the seat belt retractor 10 is maintained in a temporarily held state without requiring support from the operator.

  Next, the bolt 40 is inserted into the bolt insertion hole 17 of the lower stay 16 in the temporary holding state, the tip of the bolt 40 is inserted into the bolt insertion hole 27 of the attached portion 22, and the bolt 40 is screwed into the nut 26. . Then, by tightening the bolt 40, the upper stay 12 (particularly the insertion portion 13) is elastically deformed, and the lower stay 16 faces the mounted portion 22 while the upper protruding portion 14 is in contact with the back side of the body panel 20. The lower stay 16 finally comes into contact with the mounted portion 22. As a result, the seat belt retractor 10 is in a fixed state in which it is elastically held with respect to the body panel 20.

  According to the present embodiment, the temporary holding state of the seat belt retractor 10 is such that the upper protrusion 14 and the back surface of the body panel 20 are in contact with each other above the insertion hole 21, and the lower protrusion 15 and the lower peripheral edge of the insertion hole 21. Is maintained by touching. That is, since the temporary holding state is maintained without fitting the insertion hole 21 and the insertion portion 13 of the upper stay 12, the insertion portion 13 can be set to a size and shape that can be easily inserted into the insertion hole 21. . Further, there is only one place between the lower stay 16 and the body panel 20 for fastening and fixing, and simple work is sufficient. Therefore, the seatbelt retractor 10 can be set in the temporary holding state without being accompanied by strict management of workability deterioration and dimensional accuracy.

  Further, in the fixed state, the lower stay 16 is fastened and fixed to the body panel 20 by screwing the bolt 40 and the nut 26, and the upper projecting portion 14 and the body panel 20 are in contact with each other due to elastic deformation of the upper stay 12. Firmly held. Therefore, the seat belt retractor 10 can be firmly attached to the body panel 20.

  Further, since the seat belt retractor 10 is elastically held with respect to the body panel 20 by the deformation of the upper stay 12, this elastic holding contributes to the absorption of vibrations input from the vehicle. Therefore, it is possible to satisfactorily prevent the generation of abnormal noise without causing a decrease in assembly workability or an increase in the number of parts.

  In the present embodiment, the bolt 40 and the nut 26 are used as the attachment members. However, the present invention is not limited to this, and other members such as an adhesive or metal welding may be used.

It is a front view which shows the state which attached the seatbelt retractor which concerns on this embodiment to the body panel of the vehicle body. It is II-II arrow sectional drawing of FIG. It is sectional drawing which shows the state before attaching a seatbelt retractor to a body panel. It is sectional drawing which shows the state at the time of attaching a seatbelt retractor, (a) shows the state which inserted the upper stay of the seatbelt retractor in the insertion hole of the body panel, (b) puts the seatbelt retractor in the temporary holding state Indicates the set state. It is a principal part enlarged view of FIG.4 (b). It is a principal part enlarged view which shows the conventional structure, (a) shows the state which inserted the perpendicular | vertical part of the hook part in the hole of the dust cover, (b) and (c) show the state which rotated the main body, d) shows an attachment state in which the final portion of the hook portion is forcibly closely fitted in the hole.

Explanation of symbols

10: Seat belt retractor 11: Retractor body 12: Upper stay 13: Insertion portion 14: Upper protrusion 15: Lower protrusion 16: Lower stay 17: Bolt insertion hole 20: Body panel 21: Insertion hole 22: Mounted portion 23: Main body insertion hole 25: Reinforcing plate 26: Nut (mounting member)
27: Bolt insertion hole 40: Bolt

Claims (1)

A seat belt retractor mounting structure for mounting a seat belt retractor to a body panel having an upper insertion hole and a lower mounted portion,
The seat belt retractor includes a retractor body, a lower stay that extends downward from the retractor body and is fixed to the mounted portion by a mounting member, and an insertion portion that extends upward from the retractor body and is inserted into the insertion hole. And an upper stay having
The insertion portion includes an upper protruding portion that bulges in one direction, and a lower protruding portion that bulges in the other direction below the upper protruding portion,
In the temporary holding state in which the insertion portion is inserted into the insertion hole from one surface side of the body panel and the lower stay is disposed to face the attached portion on the one surface side of the body panel, the upper protrusion protrudes above the insertion hole. And the lower projecting portion is in contact with the lower peripheral edge of the insertion hole, and the temporary holding state is maintained.
When the lower stay in the temporarily held state is fixed to the attached portion by the mounting member, the lower stay is moved from the temporarily held state while the upper projecting portion is in contact with the other surface side of the body panel due to elastic deformation of the upper stay. Also, the seat belt retractor mounting structure is characterized in that the seat belt retractor is attached to the body panel by being close to the attached portion.

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