JP2009248613A - Sun visor for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sun visor for a vehicle to prevent falling of a sun visor body from a shaft against impact due to airbag deployment. <P>SOLUTION: This sun visor 1 for the vehicle is constituted of a cabin fixing bracket 4 fixed on a vehicle body, the shaft 3 axially supported on the cabin fixing bracket 4 free to rotate and a support 20 to hold the sun visor body 2 by inserting the shaft 3 therein, and the support 20 is provided with a rib 21 on a bearing part 24 on a cylinder to include an internally inserting part 26 to internally insert the shaft 3. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicle sun visor. In particular, the present invention relates to a vehicle sun visor in which a sun visor body is rotatably supported by a shaft.

  A vehicle sun visor is provided to be stored in an upper part in front of the vehicle interior of the vehicle, rotatably supported by a shaft, and to shield glare from the front or side. Some vehicles include an air bag in a front pillar or the like near the vehicle sun visor. Therefore, the passenger can be protected by deploying the airbag due to a vehicle collision.

  A conventional vehicle sun visor will be described with reference to FIGS. In FIG. 1, it is a block diagram which shows schematically the conventional sun visor 1 for vehicles. Moreover, it is a state in which the passenger uses the vehicle sun visor 1 and is viewed from the front of the vehicle from the passenger compartment side.

  As shown in FIG. 1, a vehicle sun visor 1 includes a sun visor body 2, a shaft 3 that rotatably supports the sun visor body 2, a support 10 that supports the sun visor body 2 by inserting the shaft 3 therein, and a support. 10 and an iron clip 5 for fixing the shaft 3 inserted in the support 10, and a vehicle compartment fixing bracket 4 for supporting the shaft by locking the shaft 3 to the vehicle compartment side.

  In FIG. 2, it is a block diagram which shows schematically the shaft 3 of the conventional sun visor 1 for vehicles. Moreover, it is a state in which the passenger uses the vehicle sun visor 1 and is viewed from the front of the vehicle from the passenger compartment side.

  As shown in FIG. 2, the shaft 3 is pivotally supported by the vehicle compartment fixing bracket 4 and bent at approximately 90 degrees before being inserted into the support 10, so that the two bearing portions 14 of the support 10 and the iron clip 5 are connected to each other. It is inserted and penetrated. Further, the shaft 3 is provided with a retaining portion 6 that penetrates the support 10 and is engaged with one bearing portion 14 of the support 10 and an engaging portion 7 that is engaged with the other bearing portion 14. Thus, the support 10 is held so as not to come out of the shaft 3.

  The support 10 is a resin molded product that is injection-molded with polyacetal. The support 10 includes two bearing portions 14 that support the shaft 3 and a coupling portion 15 that couples the two bearing portions 14. The resin molding mold for molding the support 10 includes a coupling portion 15. Is provided with a gate port 12 into which a polyacetal resin dissolved from an injection molding machine is charged.

  In FIG. 3, it is a block diagram which shows schematically the support 10 of the conventional sun visor 1 for vehicles.

  As shown in FIG. 3, the support 10 is provided with an insertion portion 16 for inserting the shaft 3 into the two bearing portions 14. The insertion part 16 has a key-like groove, and the shaft 3 is turned upside down to insert the key-like groove, the retaining part 6 of the shaft 3 is passed through the key-like groove, and the support 10 is After passing through, the shaft 3 is turned upside down again so that the retaining portion 6 of the shaft 3 holds the bearing portion 14.

  Here, when the airbag in the vicinity of the vehicle sun visor is deployed, the airbag collides with the vehicle sun visor, and the impact of the collision causes the sun visor main body 2 to turn vigorously toward the vehicle interior, so that the shaft 3 supports 10. Since there is a possibility that the sun visor main body 2 may fall out of the case, various countermeasures are cited.

In Patent Document 1, the sun visor body is fixed even at the impact of the deployment of the airbag by firmly fixing the shaft at the tip where the shaft is inserted into the support of the sun visor body and fixing it firmly at two places: the support inserted and the prevention mechanism. There is provided a vehicle sun visor that prevents slipping out.
JP 2006-199187 A

  However, in Patent Document 1, in addition to the retaining portion 6 of the shaft 3, the support 10 does not come off from the retaining portion 6 by providing a mechanism for preventing it from coming off, but the impact of the sun visor body 2 when the airbag is deployed is reduced. However, since stress concentrates on the bearing portion 14 of the support 10, the bearing portion 14 of the support 10 may break if the rigidity of the support 10 is not high.

  As shown in FIG. 3, the weld 13 generated when the support 10 is injection-molded is generated at the upper end portion of the two bearing portions 14 that are far from the gate port 12 and have a hole-like shape. In the porous shape, the melted resin flowing in from the gate generates a flow direction that bypasses the hole shape, the melted resin having a flow in two directions collides, loses the flow velocity, and welds to solidify before completely mixing. Prone to occur. For this reason, since the rigidity of the bearing portion 14 where the weld 13 is generated is lowered at the position of the weld 13, there is a possibility that the bearing portion 14 is broken and the sun visor body 2 is dropped due to the impact of the development of the airbag.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object thereof is to provide a vehicle sun visor that prevents the sun visor body from falling off the shaft in response to an impact caused by airbag deployment.

  In order to solve the above-described problems, a vehicle sun visor according to the present invention includes a bracket fixed to a vehicle body, a shaft rotatably supported on the bracket, and a support that holds the sun visor body by inserting the shaft. In the vehicle sun visor, the support is characterized in that a thick portion is provided in a cylindrical bearing portion including an insertion portion for inserting the shaft.

  According to this configuration, since the rigidity of the bearing portion can be increased by providing the thick portion in the bearing portion of the support, the bearing portion is ruptured against an impact applied to the sun visor body due to the airbag development. It can be prevented in advance. In addition, by providing a large number of thick parts in the bearing part where stress is particularly likely to be applied to the impact on the sun visor body due to airbag development, the bearing part breaks down in order to obtain further rigidity. This can be prevented. Thereby, the sun visor for vehicles which prevents that a sun visor main body falls off from a shaft can be provided.

  In addition to the above-described invention, the support is a resin molded product in which glass fiber is mixed with polyacetal.

  According to this configuration, by mixing the glass fiber with the support, the rigidity of the support itself can be increased. Therefore, it is possible to eliminate the breakage in the bearing portion against the impact applied to the sun visor body due to the airbag development. This can prevent the sun visor body from falling off the shaft.

  In addition to the above-described invention, the support has two bearing portions and a connecting portion that connects the two bearing portions, and a gate position is provided in each of the two bearing portions. The bearing portion has no weld.

  According to this configuration, the resin molding die for molding the support is provided with two gate ports into which the melted resin is introduced from the injection molding machine at approximately the center of the two bearing portions, thereby forming a hole-shaped shape. It is possible to avoid the collision of the melted resin having a flow in two directions, which is detoured by the hole shape, in the bearing portion having the. Further, it is configured that welds may be generated in the connecting portion by causing the molten resin flowing in from the two gates to collide at the connecting portion of the support. For this reason, it is not necessary to generate welds in the bearing portion that is stressed by an impact when the airbag is deployed, and the rigidity of the bearing portion is maintained, so that the bearing portion can be prevented from being broken. In addition, since the connecting part is a position where stress due to an impact at the time of air bag deployment is difficult to be applied, it is not easily affected, even if the connecting part breaks, the sun visor body is held by the two bearing parts, It is possible to prevent the sun visor body from falling off the shaft.

  ADVANTAGE OF THE INVENTION According to this invention, the sun visor for vehicles which prevents that a sun visor main body falls off from a shaft with respect to the impact by airbag deployment can be provided.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Embodiments of the invention will be described below with reference to the accompanying drawings. The vehicle sun visor according to the embodiment of the present invention will be described as a vehicle sun visor pivotally supported by a shaft.

  Therefore, an example of the embodiment according to the present invention will be described with reference to FIGS.

  FIG. 4 is a configuration diagram schematically showing a vehicle sun visor 1 according to the present invention. Moreover, it is a state in which the passenger uses the vehicle sun visor 1 and is viewed from the front of the vehicle from the passenger compartment side.

  4, the vehicle sun visor 1 includes a sun visor body 2, a shaft 3 that rotatably supports the sun visor body 2, a support 20 that supports the sun visor body 2 by inserting the shaft 3 therein, and a support. 20 and an iron clip 5 for fixing the shaft 3 inserted into the support 20, and a vehicle compartment fixing bracket 4 that supports the shaft by locking the shaft 3 to the vehicle compartment side.

  Since one end of the shaft 3 is pivotally supported by the vehicle compartment fixing bracket 4, the shaft 3 can rotate with respect to a vertical axis passing through the vehicle compartment fixing bracket 4. Therefore, the sun visor main body 2 can be rotated to the vehicle front side or the vehicle side surface side. Further, since the other end of the shaft 3 is also supported by the support 20 fixed to the sun visor body 2, the sun visor body 2 can be rotated in the vertical direction around the shaft 3. Therefore, when the vehicle sun visor 1 is used, the sun visor body 2 is rotated downward to block glare from the front or side of the vehicle.

  FIG. 5 is a configuration diagram schematically showing the shaft 3 of the vehicle sun visor 1 according to the present invention. Moreover, it is a state in which the passenger uses the vehicle sun visor 1 and is viewed from the front of the vehicle from the passenger compartment side.

  As shown in FIG. 5, the shaft 3 is pivotally supported by the vehicle compartment fixing bracket 4 and bent at approximately 90 degrees before being inserted into the support 20, so that the two bearing portions 24 of the support 20 and the iron clip 5 are connected to each other. It is inserted and penetrated. Further, the shaft 3 is provided with a retaining portion 6 that penetrates the support 20 and is engaged with one bearing portion 24 of the support 20 and an engaging portion 7 that is engaged with the other bearing portion 24. Thus, the support 20 is held so as not to come out of the shaft 3.

  FIG. 6 is a configuration diagram schematically showing the support 20 of the vehicle sun visor 1 according to the present invention.

  As shown in FIG. 6, the support 20 is a resin molded product that is injection-molded with polyacetal. The support 20 includes two bearing portions 24 that support the shaft 3 and a connecting portion 25 that connects the two bearing portions 24. The resin molding die for molding the support 20 is provided with two gate ports 22 into which the polyacetal resin dissolved from the injection molding machine is put in the approximate center of the two bearing portions 24.

  Further, the support 20 is provided with an insertion portion 26 that allows the shaft 3 to be inserted into the two bearing portions 24. The insertion part 26 has a key-like groove, and the shaft 3 is turned upside down so that the key-like groove is inserted, the retaining part 6 of the shaft 3 is passed through the key-like groove, and the support 20 is inserted. By reversing the shaft 3 upside down after passing through, the retaining portion 6 of the shaft 3 can be held with the bearing portion 24.

  The weld 23 generated when the support 20 is injection-molded is generated in the central portion of the connecting portion 25. By providing the gate port 22 in the bearing portion 24 having a hole-like shape, it is possible to avoid the molten resin having a flow in two directions bypassed by the hole shape from colliding with the bearing portion 24. However, the melted resin that has flowed in from the two-point gate collides with the connecting portion 25 far from the gate, and is easily solidified before losing the flow velocity and intermingling, and the weld 23 is likely to occur. Therefore, the rigidity of the connecting portion 25 where the weld 23 is generated is lowered at the position of the weld 23. Therefore, there is a possibility that the connecting portion 25 is broken by the impact of the development of the airbag. Does not affect the shaft support, the support 20 is not broken and the sun visor body 2 is not dropped. Further, since no weld is generated in the bearing portion 24 of the support 20, it is possible to exclude a weak portion of the bearing portion 24 and to maintain rigidity. Therefore, breakage of the bearing portion 24 can be prevented.

  A large number of ribs 21 are provided on the two bearing portions 24 of the support 20. The ribs 21 are provided at a plurality of portions where stress is easily applied to the bearing portion 24 with respect to the impact applied to the sun visor main body by the airbag development. Therefore, the rigidity of the bearing portion 24 can be increased, and the breakage of the bearing portion 24 can be prevented.

  Thus, according to the present embodiment, the rigidity of the bearing portion 24 can be increased by providing the rib 21 on the bearing portion 24 of the support 20. The bearing portion 24 can be prevented from breaking. Further, by providing a large number of ribs 21 at portions where the stress is particularly likely to be applied to the bearing portion 24 against the impact applied to the sun visor main body 2 due to the development of the airbag, the bearing portion 24 obtains further rigidity. Can be prevented from breaking. Thereby, the sun visor for vehicles which prevents that the sun visor main body 2 falls off from the shaft 3 can be provided.

  Further, according to the present embodiment, the resin molding die for molding the support 20 is provided with two gate ports 22 into which the molten resin is introduced from the injection molding machine at the approximate center of the two bearing portions 24. Thus, it is possible to avoid the collision of the melted resin having a flow in two directions, which is bypassed by the hole shape, in the bearing portion 24 having the hole shape. Further, it is configured that welds may be generated in the connecting portion 25 by causing the connecting portions 25 of the support 20 to collide with the molten resin flowing in from the two gates. Therefore, it is not necessary to generate a weld in the bearing portion 24 that is stressed by an impact when the airbag is deployed, and the rigidity of the bearing portion 24 is maintained, so that the bearing portion 24 can be prevented from being broken. Further, since the connecting portion 25 is a position where stress due to an impact during deployment of the airbag is difficult to be applied, the connecting portion 25 is not easily affected. Even if the connecting portion 25 is broken, the sun visor body 2 is held by the two bearing portions 24. Therefore, it is possible to prevent the sun visor body 2 from falling off the shaft 3.

  Thus, according to the present embodiment, it is possible to provide a vehicle sun visor that prevents the sun visor body from falling off the shaft against an impact caused by airbag deployment.

  In the present embodiment, the position of the gate port 22 is set to the approximate center of the two bearing portions 24, but is not particularly limited. For example, the position of the gate port 22 may be provided at the upper end portions of the two bearing portions 24.

  In the present embodiment, the thickness and height of the rib 21 are not particularly limited. Any shape can be used as long as it can secure the rigidity required for the bearing portion, is easy to mold, and does not cost.

  As another example, as shown in FIG. 6, the support 20 includes two bearing portions 24 that support the shaft 3 and a connecting portion 25 that connects the two bearing portions 24. 2 is provided with two gate ports 22 into which molten resin is introduced from an injection molding machine in the approximate center of the two bearing portions 24. In addition to polyacetal, glass fiber is mixed as the dissolved resin flowing from the two gate ports 22 to form the support 20.

  For this reason, since the rigidity of the support 20 itself can be increased by mixing the glass fiber with the support 20, it is possible to eliminate the breakage in the bearing portion 24 against the impact applied to the sun visor body 2 due to the airbag development. . Therefore, a vehicle sun visor that prevents the sun visor body 2 from falling off the shaft 3 can be provided.

  In the above-described embodiment, the resin mixed with the polyacetal is not limited to mixing only glass fiber. For example, in addition to glass fiber, a material having a property of increasing rigidity may be mixed together.

  The preferred embodiments of the present invention have been described above. However, the present invention can be variously modified and changed without departing from the concept of the claims.

It is a block diagram which shows schematically the conventional sun visor for vehicles. It is a block diagram which shows schematically the shaft of the conventional vehicle sun visor. It is a block diagram which shows schematically the support of the conventional vehicle sun visor. 1 is a configuration diagram schematically showing a vehicle sun visor according to the present invention. FIG. It is a lineblock diagram showing roughly the shaft of the sun visor for vehicles concerning the present invention. It is a lineblock diagram showing roughly the support of the sun visor for vehicles concerning the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle sun visor 2 Sun visor main body 3 Shaft 4 Case fixing bracket 5 Iron clip 6 Detachment part 7 Locking part 10 Support 12 Gate port 13 Weld 14 Bearing part 15 Connection part 16 Insertion part 20 Support 21 Rib 22 Gate port 23 Weld 24 Bearing part 25 Connecting part 26 Insertion part

Claims (3)

In a vehicle sun visor comprising a bracket fixed to a vehicle body, a shaft pivotally supported on the bracket, and a support for holding the sun visor body by inserting the shaft.
The vehicle sun visor according to claim 1, wherein the support is provided with a thick portion on a cylindrical bearing portion including an insertion portion for inserting the shaft. 2. The vehicle sun visor according to claim 1, wherein the support is a resin molded product in which glass fiber is mixed with polyacetal. The support has two bearing portions and a connecting portion that connects the two bearing portions, each of the two bearing portions has a gate position, and the bearing portion has no weld. The vehicle sun visor according to claim 1 or 2, characterized in that

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