JP5139223B2 - Vehicle sliding door support device and synthetic resin thrust washer - Google Patents

Description

  The present invention relates to a vehicular slide door support device that supports a slide door to be openable and closable on a vehicle body, and a synthetic resin thrust washer mounted on a support shaft of a roller of the vehicular slide door support device.

  The slide door attached to the side of the vehicle body is attached to a slide door hinge that rotatably supports a load roller and a guide roller on each support shaft erected on a metal bracket. The guide roller is supported to be openable and closable by a vehicular slide door support device that makes rolling contact with a guide rail provided on the vehicle body. Usually, a load roller that supports the weight of the slide door is supported by a horizontal support shaft, and a guide roller that guides the opening and closing of the slide door is supported by a vertical support shaft (for example, see Patent Documents 1 and 2).

  The supporting shaft of the load roller and guide roller is a caulking shaft that is fixed to the bracket by caulking or a bolt that is screwed to the bracket, and each roller is between the bracket surface on which the supporting shaft is erected. It is attached to the support shaft with an axial gap allowing rotation. A load roller that receives a large radial load depending on the weight of the sliding door is often a composite roller that is attached to a support shaft via a bearing and has a resin member fixed to the outer periphery of a metal member. In many cases, the guide roller that is not provided is a resin roller that is directly attached to the support shaft with a radial gap therebetween and is formed of resin.

  In addition, the sliding door is painted in a state where a sliding door hinge is attached prior to the painting process, and in many cases, electrodeposition painting or electrostatic painting is applied.

JP 2002-274179 A JP 2006-63682 A

  In the conventional sliding door support device for a vehicle described above, the load roller and the guide roller supported by the support shaft with an axial gap therebetween are biased in the axial direction, and the support shaft base end side end surface serves as the support shaft. If the bracket surface is slidably contacted with the erected bracket surface, the rotational torque of each roller increases due to the frictional frictional resistance with the bracket formed of metal, and there is a problem that the opening and closing of the slide door becomes heavy and the operability deteriorates. In particular, the guide roller that is attached to the support shaft with a radial gap is easily biased in the axial direction.

  Further, when the support shaft of the roller is a caulking shaft, the support shaft may be tilted due to the presence of an axial clearance when the support shaft is caulked, and the rotation of the roller becomes unstable. As a result, there is a problem that the operability of the sliding door is deteriorated.

  Further, as described above, since the sliding door is painted with the sliding door hinge attached, the paint enters from the axial gap between the roller supported by the support shaft and the bracket surface on which the support shaft is erected. However, there is also a problem that the paint adheres to the outer diameter surface of the support shaft that rotatably supports the rollers, the rotational torque of each roller increases, and the operability of the slide door deteriorates. When the coating is electrodeposition coating or electrostatic coating, the coating is more likely to adhere to the outer diameter surface of the support shaft.

  Accordingly, an object of the present invention is to improve the operability of the slide door by reducing the rotational torque of the roller provided on the slide door hinge of the vehicle slide door support device.

  In order to solve the above-mentioned problems, a vehicle slide door support device according to the present invention is provided with a slide door hinge that rotatably supports a load roller and a guide roller on each support shaft erected on a bracket. In a vehicular slide door support device in which a load roller and a guide roller of a door hinge are brought into rolling contact with a guide rail provided on a vehicle body so as to be able to be opened and closed on the vehicle body, at least one of the load roller and the guide roller A configuration was adopted in which a thrust washer made of synthetic resin that receives the end surface of the support shaft on the base end side of the roller on the surface of the bracket on which the support shaft was erected was mounted on the support shaft that supports the roller.

  That is, a synthetic resin thrust washer is mounted on the support shaft that supports at least one of the load roller and the guide roller, and the end surface of the support shaft proximal end of the roller is received by the surface of the bracket on which the support shaft is erected. As a result, the end surface on the base end side of the support shaft of the roller is brought into sliding contact with a thrust washer made of synthetic resin to reduce the sliding frictional resistance, and from the axial clearance between the roller and the bracket surface during painting. By preventing the paint from adhering to the outer diameter surface of the support shaft due to the ingress of paint, the rotational torque of the roller can be reduced and the operability of the sliding door can be improved. If the support shaft is a caulking shaft, when the caulking shaft is caulked, the axial gap is killed by the thrust washer so that the support shaft is not tilted and the rotation of the roller is prevented. The deterioration of the operability of the sliding door due to stability can also be prevented.

  By making the thrust washer into a disc spring shape, the axial gap between the roller and the bracket surface can be killed more reliably.

  By using a fluororesin as the synthetic resin forming the thrust washer, it is possible to further reduce the sliding frictional resistance with the end surface of the support shaft base end side of the roller. As this fluororesin, polytetrafluoroethylene (PTFE), tetrafluoroethylene-hexafluoropolypropylene copolymer (FEP), tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (PFA), tetrafluoroethylene-ethylene copolymer Examples thereof include a polymer, polychlorotrifluoroethylene, and ethylene-chlorotrifluoroethylene copolymer. Among these fluororesins, PTFE, FEP, and PFA are preferable because they have high heat resistance and can be used even when the temperature reaches 50 ° C.

  By using the synthetic resin as a mixture of the fluororesin and the fibrous reinforcing material, creep deformation of the thrust washer can be prevented. In particular, it is effective for preventing creep deformation when the thrust washer is a disc spring.

  The thrust washer may be mounted on a support shaft that supports the guide roller.

  Each of the above-described sliding door support devices for vehicles is suitable for a device in which the sliding door and the sliding door hinge are electropainted.

  The electropainting can be electrodeposition coating or electrostatic coating.

  Further, the synthetic resin thrust washer of the present invention is attached to the support shaft of the roller of any one of the above-described vehicle slide door support devices, thereby sliding the end surface of the roller on the base end side of the support shaft. In addition to reducing contact frictional resistance, it prevents the paint from adhering to the outer diameter surface of the support shaft due to the ingress of paint from the axial gap between the roller and bracket surface during painting, reducing the rotational torque of the roller The operability of the sliding door can be improved. When the support shaft is a caulking shaft, when the caulking shaft is caulked, the axial gap is killed by the thrust washer so that the support shaft is not tilted and the rotation of the roller is unstable. It is also possible to prevent deterioration of the operability of the sliding door.

  The vehicle sliding door support device according to the present invention has a support shaft that supports at least one of a load roller and a guide roller, and the end surface of the support shaft on the base end side of the roller is a surface of a bracket on which the support shaft is erected. Since the thrust washer made of synthetic resin is installed, the end surface on the base end side of the support shaft of the roller is in sliding contact with the synthetic resin thrust washer to reduce the sliding frictional resistance, and the roller and bracket surface during painting It is possible to prevent the paint from adhering to the outer diameter surface of the support shaft due to the entrance of the paint from the axial gap between them, to reduce the rotational torque of the roller, and to improve the operability of the slide door. If the support shaft is a caulking shaft, when the caulking shaft is caulked, the axial gap is killed by the thrust washer so that the support shaft is not tilted and the rotation of the roller is prevented. The deterioration of the operability of the sliding door due to stability can also be prevented.

  The synthetic resin thrust washer of the present invention is mounted on the support shaft of the roller of the above-described vehicle sliding door support device, thereby reducing the sliding frictional resistance of the end surface of the support shaft base end side of the roller. Prevents the paint from adhering to the outer diameter surface of the support shaft due to the ingress of paint from the axial gap between the roller and bracket surface during painting, reducing the rotational torque of the roller and improving the operability of the sliding door Can be improved. When the support shaft is a caulking shaft, when the caulking shaft is caulked, the axial gap is killed by the thrust washer so that the support shaft is not tilted and the rotation of the roller is unstable. It is also possible to prevent deterioration of the operability of the sliding door.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, this vehicle sliding door support device pivotally supports a third bracket 4 via a second bracket 3 on a first bracket 2 attached to the inner surface of the sliding door 1 so as to freely swing. The support shafts 5a and 5b that are erected by crimping to the third bracket 4 are respectively supported by one load roller 6a and two guide rollers 6b so as to be rotatable. 6a and a guide roller 6b are brought into rolling contact with a guide rail (not shown) provided on the vehicle body, and the slide door 1 is supported on the vehicle body so as to be opened and closed. The slide door 1 is painted by electrodeposition or electrostatic painting with the slide door hinge attached.

  The support shaft 5a of the load roller 6a is erected horizontally on the vertical bracket surface 4a of the third bracket 4, and the support shaft 5b of the guide roller 6b is upward on the horizontal bracket surface 4b of the third bracket 4. It is erected. The load roller 6a is a composite roller in which a resin member is fixed to the outer periphery of a metal member, and is attached to the support shaft 5a via a bearing (not shown).

  The guide roller 6b is a resin roller formed of resin, and as shown in FIG. 2, the guide roller 6b is fitted on the support shaft 5b standing on the bracket surface 4b of the third bracket 4 with a slight radial clearance. The support shaft base end side end surface 8 is received by the bracket surface 4b by the synthetic resin thrust washer 7, and the axial gap between the guide roller 6b and the bracket surface 4b is killed by the thrust washer 7. Yes. Therefore, when the support shaft 5b on which the guide roller 6b is supported is swaged and is erected on the third bracket 4, the support shaft 5b is not inclined due to the axial gap of the guide roller 6b.

  As shown in FIGS. 3A and 3B, the synthetic resin thrust washer 7 has a disc spring shape, and is made of polytetrafluoroethylene (PTFE) as a fluororesin and glass as a fibrous reinforcing material. It is supposed that 25% by mass of fiber is blended. Therefore, the axial clearance between the guide roller 6b and the bracket surface 4b is surely killed, and the frictional frictional resistance between the end surface 8 on the support shaft base end side of the guide roller 6b as a resin roller and the thrust washer 7 is extremely high. As a result, the rotational torque of the guide roller 6b is reduced.

  The sliding door 1 to which the sliding door hinge was attached was electrodeposited, the support shaft 5b of the guide roller 6b after painting was removed, and the outer diameter surface thereof was observed. As a result, it was confirmed that no paint adhered to the outer diameter surface of the support shaft 5b. Therefore, there is no possibility that the rotational torque of the guide roller 6b increases due to the adhesion of the paint to the outer diameter surface of the support shaft 5b.

  In the above-described embodiment, the synthetic resin thrust washer is attached only to the support shaft of the guide roller. However, a similar thrust washer can be attached to the support shaft of the load roller.

External perspective view showing an embodiment of a sliding door support device for a vehicle 1 is an enlarged longitudinal sectional view showing a guide roller mounting portion in FIG. a is a plan view showing the thrust washer of FIG. 2, b is a longitudinal sectional view of a

Explanation of symbols

1 Slide door 2, 3, 4 Bracket 4a, 4b Bracket surface 5a, 5b Support shaft 6a Load roller 6b Guide roller 7 Thrust washer 8 End surface

Claims (8)

  A slide door hinge that rotatably supports a load roller and a guide roller is attached to each support shaft standing on the bracket, and the load roller and guide roller of the slide door hinge are brought into rolling contact with a guide rail provided on the vehicle body. In the vehicular slide door support device that supports the slide door to be openable and closable on the vehicle body, the support shaft supporting at least one of the load roller and the guide roller has an end surface on the base end side of the support shaft of the roller. A sliding door support device for a vehicle, wherein a thrust washer made of synthetic resin received on the surface of the bracket on which the support shaft is erected is mounted.   The sliding door support device for a vehicle according to claim 1, wherein the thrust washer has a disc spring shape.   The sliding door support device for a vehicle according to claim 1 or 2, wherein the synthetic resin forming the thrust washer is a fluororesin.   The sliding door support device for vehicles according to claim 3 in which said synthetic resin mixes a fibrous reinforcement with said fluororesin.   The vehicle sliding door support device according to any one of claims 1 to 4, wherein the thrust washer is mounted on a support shaft that supports the guide roller.   The sliding door support device for a vehicle according to any one of claims 1 to 5, wherein the sliding door and the sliding door hinge are electropainted.   The sliding door support device for a vehicle according to claim 6, wherein the electric coating is electrodeposition coating or electrostatic coating.   A synthetic resin thrust washer mounted on a support shaft of the roller of the vehicle slide door support device according to any one of claims 1 to 7.

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