JP2009052195A - Vehicular roller device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular roller device capable of rotating smoothly without using lubricant such as grease and preventing a roller main body from being damaged due to its use over time to achieve smooth rotation and satisfactory operation property for a long time. <P>SOLUTION: This vehicular roller device is provided with a roller shaft 30 having a collar part 31 and a resin roller 20 supported rotatably on the roller shaft 30 and formed by a synthetic resin material having modulus of bending elasticity of 9,000 MPa or more. A surface treatment material containing polyether ether ketone (PEEK) as a main component is applied to a surface of a rotary shaft 32 of the roller shaft 30. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

    The present invention relates to a vehicular roller device assembled to a vehicle, and is used for, for example, a sliding door.

    2. Description of the Related Art Conventionally, a vehicular roller device used for a slide door or the like is provided between the slide door or the like and the vehicle to smoothly operate the slide door or the like, and an annular roller body is rotatably provided on the roller shaft. It is a supported structure. Here, the roller main body uses synthetic resin for the roller main body in order to suppress abnormal noise during operation of the slide door or the like and improve operability. Further, a lubricant such as grease is applied between the outer periphery of the roller shaft and the inner periphery of the roller body in order to smoothly rotate the roller body with respect to the roller shaft.

 By the way, the vehicle roller device assembled to the vehicle before the painting process passes through the painting process together with the vehicle. In this painting process, a cleaning process for removing oil from the vehicle, a painting process for applying paint to the vehicle, There is a drying step of drying the applied paint, and each of these steps is passed. At this time, when the lubricant such as grease applied to the roller device for the vehicle flows out by the cleaning liquid used in the cleaning process, the paint is repelled by the lubricant such as the grease that has flowed out, resulting in poor coating. It can happen. Further, when the lubricant such as grease is deteriorated with time, the lubricating function is deteriorated, the rotation of the roller is deteriorated, and the operability is impaired.

For example, according to Patent Document 1, the oil component is not separated in the coating process and the rotational torque at low temperature is reduced in response to the problem that the lubricant such as grease flows out in the cleaning process of the coating process or the problem of deterioration with time. A technique of applying a grease containing a thickener to a base oil made of a polymer compound whose molecular weight is adjusted so as to be maintained is shown.
JP 2004-360354 A (page 3, lines 11 to 26)

   In the technique of applying a grease made of a polymer compound with a molecular weight adjusted as disclosed in Patent Document 1, the applied grease gradually slips out from between the outer periphery of the roller shaft and the inner periphery of the roller body by the rotation of the roller body. Decrease. As a result, the lubrication function is deteriorated and the rotation of the roller body is gradually deteriorated. In addition, depending on the load applied to the roller over time, the roller body may be damaged and the operability during the operation of the slide door or the like may deteriorate.

  In view of the above points, the present invention is for a vehicle that can obtain smooth rotation without using a lubricant such as grease and has good operability in the long term by suppressing damage to the roller body during use over time. It is to provide a roller device.

Means, actions, and effects to solve the problem

  In the first aspect of the invention, the roller includes a roller shaft having a flange portion and fixed to the fixing member, and a resin roller made of a synthetic resin material rotatably supported on the roller shaft. The shaft is surface-treated with a surface treatment material mainly composed of polyetheretherketone (PEEK) resin. Thus, since the roller shaft is surface-treated with a surface treatment material mainly composed of polyether ether ketone (PEEK) resin having excellent slidability, the resin roller can be smoothly rotated. Even if the resin roller and the roller shaft are in contact with each other and rotated, the surface treatment material is firmly adhered to the surface of the roller shaft, so that the surface treatment material is not easily peeled off from the surface of the roller shaft and smooth for a long time. Rotation is obtained and good operability can be maintained.

  In the invention of claim 2, the surface treatment material contains 10 to 50% by weight of a fluororesin. By adding a fluororesin that is more slidable than polyetheretherketone (PEEK) resin to the surface treatment material to such an extent that adhesion to the surface of the roller shaft does not deteriorate, the slidability of the surface treatment material is further improved. Improves smooth rotation.

  In the invention of claim 3, the resin roller has a bending elastic modulus of 9000 MPa or more and is strong against bending. As a result, the resin roller becomes stronger with respect to the load applied to the resin roller, so that damage can be suppressed, smooth rotation can be obtained for a long period of time, and good operability can be maintained.

 In the invention of claim 4, the flange is integrated with the roller shaft, and restricts the movement of the resin roller with respect to the axial direction of the roller shaft. For this reason, the collar does not move with respect to the roller shaft, and the resin roller is always regulated in the same state. Therefore, the rotation change due to the change of the position of the resin roller in the axial direction of the roller shaft. Is less likely to occur and good operability can be maintained.

 In the invention of claim 5, when the outer peripheral portion of the flange portion does not have the flange portion, when the load acts on the resin roller and the resin roller is elastically deformed, the direction of the load is applied. It is set larger than the outer peripheral portion of the resin roller. For this reason, when a load acts on the resin roller and the outer peripheral portion of the resin roller is elastically deformed and comes into contact with the outer peripheral portion of the flange, the load is dispersed and acts on the resin roller and the flange. In addition, since the outer peripheral portion of the flange portion supports, damage to the resin roller can be suppressed, and since the deformation of the resin roller is within elastic deformation, the resin roller can be returned to the original position. Smooth rotation can be obtained for a period and good operability can be maintained.

    FIG. 1 shows an application example in which the vehicle roller device of the present invention is provided at the center hinge portion of a vehicle sliding door. Hereinafter, the vehicular roller device of the present invention will be described, but the vehicular roller device of the present invention is not limited to application to a slide door.

 2 is a perspective view of the vehicle roller device of the present embodiment shown in FIG. 1, and FIG. 3 is a longitudinal sectional view of the vehicle roller device of the present embodiment. As shown in FIGS. 2 and 3, the vehicle roller device includes a roller shaft (guide pin) 30 and a roller shaft (fixed to a fixing member (bracket) 10 provided on a hinge for installing the vehicle roller device in the vehicle. The surface of the rotating portion 32 of the roller shaft (guide pin) 30 is coated by baking coating on the surface of the rotating portion 32 of the roller shaft (guide pin) 30. Slidability is improved.

 Each will be described below.

(A) Guide Pin As shown in FIG. 3, the guide pin 30 is formed of a carbon steel column member of, for example, S45C, and a rotating portion 32 that allows the resin roller 20 to freely rotate, and a fixed portion that protrudes from the rotating portion 32. 33, and a flange 31 adjacent to the rotating part 32 opposite to the fixed part 33. The flange 31 has a circular shape coaxial with the rotating part 32. The flange 31, the rotating part 32, and the fixed part 33 Are integrally formed. Thereby, the positional relationship with respect to the guide pin 30 of the collar part 31 does not change.

 The axial length L1 of the rotating portion 32 is such that when the resin roller 20 is regulated between the flange portion 31 and the bracket 10, the resin roller 20 can freely rotate and the axial direction of the rotating portion 32 of the resin roller 20 can be reduced. It is set to be longer than the axial length L2 of the resin roller 20 so that the movement is minimized.

 Next, the collar part 31 will be described with reference to FIG. As shown in FIG. 4A, when no load is applied to the resin roller, the outer peripheral portion 311 of the flange portion 31 is set smaller than the outer peripheral portion 211 of the large-diameter portion 21 of the resin roller 20 described later. . Thereby, the resin roller 20 can be smoothly rotated without being affected by the outer peripheral portion 311 of the flange portion 31. When the resin roller 20 is deformed by receiving a load, the outer peripheral portion 211 of the large diameter portion 21 of the resin roller 20 is elastically deformed to the same position as the outer peripheral portion 311 of the flange portion 31 as shown in FIG. Since the outer peripheral part 311 of the part 31 receives and supports the load, it is possible to suppress the further progress of the deformation. Here, as shown in FIG. 4C, the outer peripheral portion 211 of the large-diameter portion 21 of the resin roller 20 is further elastically deformed by the applied load when the flange portion 31 is not present, and depending on the applied load, the resin roller 20 Can be damaged.

 Thus, the outer peripheral portion 311 of the flange portion 31 is smaller than the outer peripheral portion 211 when the outer peripheral portion 211 of the large diameter portion 21 of the resin roller 20 is not receiving a load, and the thicker portion of the resin roller 20 when the flange portion 31 is not present. By setting the outer peripheral portion 211 of the diameter portion 21 to be larger than the outer peripheral portion 211 in the direction of receiving the load when the outer peripheral portion 211 is elastically deformed by receiving a load, the load acts on the large diameter portion 21 of the resin roller 20 to increase the diameter. When the outer peripheral portion 211 of the flange portion 21 is elastically deformed until it comes into contact with the outer peripheral portion 311 of the flange portion 31, further deformation is supported by the outer peripheral portion 311 of the flange portion 31 and the progress is suppressed. At this time, since the large-diameter portion 21 of the resin roller 20 is a deformation within the elastic deformation, the large-diameter portion 21 of the resin roller 20 can return to its original shape when the load is no longer applied.

 In the present embodiment, the outer peripheral portion 211 of the large-diameter portion 21 of the resin roller 20 made of a synthetic resin material described later has an elastic deformation amount of 1 mm or more when the flange portion 31 is not present. The portion 311 is set to be approximately 1 mm smaller than the outer peripheral portion 211 of the large diameter portion 21 of the resin roller 20 when no load is applied. Thereby, since the outer peripheral part 211 of the large diameter part 21 of the resin roller 20 remains in the deformation amount within the elastic deformation when a load is applied, it can return to its original shape and maintain smooth rotation.

 Next, the fixing of the vehicle roller device to the bracket 10 will be described.

 As shown in FIG. 3, after rotating the rotating portion 32 of the guide pin 30 in the through hole 23 of the resin roller 20 so that the large diameter portion 21 faces the flange portion 31, the fixing portion 33 of the guide pin 30 is bracketed. 10 and is fixed by caulking. The resin roller 20 assembled to the guide pin 30 as described above can freely rotate with respect to the rotating portion 32 of the guide pin 30, but the axial movement of the rotating portion 32 is minimized by the flange portion 31 and the bracket 10. It is regulated.

(B) Surface treatment material As the surface treatment material, a material mainly composed of a synthetic resin material having heat resistance that hardly changes in quality at the drying temperature in the drying process and excellent in slidability can be used. A polyether ether ketone (PEEK) resin is preferable because it has good adhesion to the rotating portion 32 of the guide pin 30 and hardly peels off. Furthermore, a fluororesin can be mixed for the purpose of improving slidability. The mixing amount of the fluororesin is preferably 10% by weight to 50% by weight. Depending on the type of synthetic resin material of the resin roller 20, if the amount of the fluororesin is less than 10% by weight, abnormal noise is likely to occur, and if it exceeds 50% by weight, the adhesion with the guide pin is deteriorated and peeling occurs. It tends to happen. The fluororesin includes polytetrafluoroethylene (PTFE), perfluoroalkoxyalkane (PFA), ethylene-tetrafluoroethylene copolymer (ETFE), perfluoroethylene-propene copolymer (FEP), and ethylene-chlorotrifluoroethylene copolymer (ECTFE). However, polytetrafluoroethylene (PTFE), which is excellent in slidability and heat resistance, is preferable.

 As described above, the material obtained by mixing polyether ether ketone (PEEK) resin as a main component with 10 wt% to 50 wt% of the fluororesin is coated on the surface of the rotating portion 32 of the guide pin 30 and then baked, thereby baking the rotating portion 32. The surface treatment material is coated on the surface. At this time, by baking at a high temperature, the rotating portion 32 and the surface treatment material are in close contact with each other and are difficult to peel off.

 Here, in this embodiment, in consideration of the influence on the environment, a material obtained by dispersing and mixing a polyetheretherketone (PEEK) resin powder and a polytetrafluoroethylene (PTFE) powder in water as a fluorine resin is used for spraying. Painted. It is also possible to use polyether ether ketone (PEEK) resin and fluororesin by dissolving or dispersing them in a solvent other than water. Can be used. It is also possible to powder-coat polyether ether ketone (PEEK) resin and fluororesin powder directly on the surface of the rotating portion 32 of the guide pin 30.

(C) Resin Roller As shown in FIG. 3, the resin roller 20 is a stepped annular shape having a diameter larger than the outer peripheral portion 311 of the flange portion 31 and the above-described large-diameter portion 21 and the end surface 11 of the bracket 10. A through-hole 23 is formed in the center of the guide pin 30. The through-hole 23 passes through the rotating portion 32 of the guide pin 30. The synthetic resin material of the resin roller 20 can be a synthetic resin material having a heat deflection resistance equal to or higher than the drying temperature of the coating process as defined in ISO 75, ASTM D648, JIS K7191, for example, a crystalline synthetic resin material Nylon (PA) resin, polybutylene terephthalate (PBT) resin, polyethylene terephthalate (PET) resin, polyphenylene sulfide (PPS) resin, polyether ether ketone (PEEK) resin and the like are suitable. By using a synthetic resin material whose heat deflection temperature is equal to or higher than the drying temperature in the coating process, when the temperature is kept high in the drying process in the coating process, deformation due to heat can be suppressed and smooth rotation is achieved. can get.

 Further, the synthetic resin material used for the resin roller 20 can be used alone, but a material having a flexural modulus increased by mixing a reinforcing material can also be used. As the reinforcing material, a fibrous material having a high reinforcing effect can be used, and in particular, carbon fibers that do not adversely affect the slidability are preferable. Here, the flexural modulus is measured by a method defined in JIS K7171, ASTM D790, ISO 178, and is preferably 9000 MPa or more. If a synthetic resin material having a flexural modulus of 9000 MPa or more is used, the resin roller 20 is not damaged even when a load of 2000 N is applied to the resin roller 20 in the compression evaluation described later. It becomes possible.

 Next, an abnormal noise test and a compression test performed on the surface treatment material and the material of the resin roller 20 will be described.

<Abnormal noise test>
After degreasing and washing the guide pin 30 to remove the oil adhering to the guide pin 30, the surface treatment material shown in Tables 1 to 3 is spray-coated on the rotating portion 32 of the guide pin 30. The film was preliminarily dried at room temperature for 10 minutes and then dried in an oven at 120 ° C. for 10 minutes. Thereafter, it was baked in an oven at about 400 ° C. for 15 to 20 minutes to obtain a coating film having a film thickness of 40 μm to 50 μm. Here, the surface treatment materials in Table 1 and Table 2 are listed in Table 1 and Table 2 with polytetrafluoroethylene (PTFE) mainly composed of polyether ether ketone (PEEK) resin having excellent heat resistance and slidability. The surface treatment material in Table 3 is made of polytetrafluoroethylene (PTFE) based on polyamideimide (PAI) resin, which is excellent in heat resistance and sliding property, similar to polyether ether ketone (PEEK) resin. 30% mixed material was used.

 The resin roller 20 produced by injection molding the synthetic resin material shown in Tables 1 to 3 on the rotating part 32 of the guide pin 30 coated with the surface treatment material shown in Tables 1 to 3 above is the large diameter part 21. Are fixed so that the fixing portion 33 of the guide pin 30 is inserted into the fixing hole formed in the bracket 10 and fixed by caulking. The evaluation rollers of Examples 1 to 15 were produced.

 By rotating the resin roller 20 in a state where a radial load of 100 N is applied to the outer peripheral portion 211 of the large-diameter portion 21 of the resin roller 20 of the evaluation roller shown in Examples 1 to 20 and Comparative Examples 1 to 15, Table 1 to Table 3 show the results of confirming the presence or absence of noise during peeling and rotation when the moving distance is about 5 km.

 When the results of Examples 2, 3, 16, and 17 in Table 1 and Comparative Examples 13 to 15 in Table 3 are compared, the case where 46 nylon (PA46) resin is used as the synthetic resin material of the resin roller 20, and the polyether ether The same results were obtained with the use of a ketone (PEEK) resin, and the surface treatment material was not peeled off with a material based on a polyether ether ketone (PEEK) resin, but a polyamideimide (PAI) resin. It can be seen that peeling occurs in the material mainly composed of, and that the material mainly composed of polyetheretherketone (PEEK) resin has excellent adhesion to the rotating portion 32 of the guide pin 30.

As is clear from the results of Tables 1 and 2, the amount of fluorotetrafluoroethylene (PTFE) mixed with the surface treatment material mainly composed of polyetheretherketone (PEEK) resin is the resin Although different depending on the type of the synthetic resin material of the roller 20, abnormal noise is likely to occur unless mixed, and peeling and abnormal noise are likely to occur when the mixing amount exceeds 50%.

<Compression test>

 The synthetic resin material shown in Table 4 was injection-molded to produce evaluation resin rollers 20 of Examples 1 to 6 and Comparative Example 1. After inserting the guide pin 30 from which the flange portion 31 is removed into the through hole 23 of the resin roller 20 and disposing the resin roller 20 in the rotating portion 32, the large diameter portion of the resin roller 20 is placed in an Amsler universal testing machine. When the outer peripheral portion 211 of the large diameter portion 21 is compressed until a load of 2000 N is applied at a speed of 1 mm / min, the resin roller 20 is checked for damage. The results are shown in Table 4.

 As is apparent from the results in Table 4, the resin roller 20 is made of a synthetic resin material having a flexural modulus of 9000 MPa or more measured by a method defined in JIS K7171, ASTM D790, ISO 178. It can be seen that there is no relation to the type of the synthetic resin material, and no damage is caused by a load of 2000 N. Here, the load of 2000N assumes the maximum load when used in a vehicle, and there is no damage due to the load of 2000N. In a standard usage, a synthetic resin material having a bending elastic modulus of 9000 MPa or more. If it is used, it can be expected that the resin roller 20 is hardly damaged.

 As described above, in the vehicular roller device according to the embodiment of the present invention, the roller shaft (guide pin) 30 has the flange portion 31, and the surface of the rotating portion 32 is a poly having excellent heat resistance and slidability. A surface treatment material mainly composed of ether ether ketone (PEEK) resin is surface-treated at a high temperature of about 400 ° C. As a result, the vehicular roller device can obtain good slidability without using a lubricant such as grease, and it can be firmly attached to the surface of the rotating portion 32 unlike the case where a lubricant such as grease is applied. Since the surface treatment makes it difficult to peel off, smooth rotation can be obtained in the long term and good operability can be maintained.

 Furthermore, for the purpose of improving the slidability, the surface treatment material is made of a fluororesin that is more slidable than polyetheretherketone (PEEK) resin, so that the adhesion with the surface of the roller shaft does not deteriorate. -50% by weight is contained. Thereby, slidability is further improved and smooth rotation is obtained.

 The type of synthetic resin material of the resin roller 20 is a synthetic resin material having a deflection temperature under load higher than the drying temperature in the coating process and having a bending strength of 9000 MPa or more. Since the deflection temperature under load is higher than the drying temperature in the coating process, thermal deformation in the coating process is suppressed and smooth rotation is obtained. Further, since the bending elastic modulus is 9000 MPa or more, it becomes strong against bending, and over time It can suppress that the resin roller 20 is damaged by use, and operativity worsens.

 The flange portion 31 is formed integrally with the guide pin 30, and the resin roller 20 is regulated by the flange portion 31 and the fixing member (bracket) 10 in the axial direction of the rotating portion 32 of the guide pin 30. It has become. As a result, the flange 31 does not move with respect to the guide pin 30 and the resin roller 20 is always regulated in the same state. Therefore, the rotation of the resin roller 20 with respect to the rotating portion 32 of the guide pin 30 is changed. Change is difficult to occur and good operability can be maintained.

 Further, the outer peripheral portion 311 of the flange portion 31 is made about 1 mm smaller than the outer peripheral portion 211 of the resin roller 20. The outer peripheral portion 311 reduced by about 1 mm is larger than the outer peripheral portion 211 in the direction in which the load is applied when the outer peripheral portion 211 of the resin roller 20 is elastically deformed by a load when the flange portion 31 is not present. As a result, when a load is applied to the outer peripheral portion 211 of the resin roller 20 and the outer peripheral portion 211 is elastically deformed and comes into contact with the outer peripheral portion 311 of the flange portion 31, the outer peripheral portion 211 of the resin roller 20 and the outer periphery of the flange portion 31. Since the load acts on the part 311 in a distributed manner and the outer peripheral part 311 of the collar part 31 supports, the progress of further deformation is suppressed, and the resin roller 20 can return to its original state when the action of the load disappears. . Accordingly, it is possible to suppress the resin roller 20 from being damaged during use over time, and thus it is possible to maintain good operability.

 As mentioned above, although this invention was demonstrated according to the said embodiment, this invention is not limited only to the said aspect, The various aspect according to the principle of this invention is included.

It is the application example which provided the roller apparatus for vehicles of this embodiment in the sliding door of the vehicle. It is a perspective view of the roller device for vehicles of this embodiment. It is a longitudinal cross-sectional view of the roller apparatus for vehicles of this embodiment. It is a mimetic diagram when a load acts on the roller device for vehicles of this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Fixed member (bracket), 20 ... Resin roller, 21 ... Large diameter part, 22 ... Small diameter part,
30 ... Roller shaft (guide pin), 31 ... collar, 211, 311 ... outer periphery, 32 ... rotating part,
33 ... fixed part, 40 ... vehicle, 50 ... sliding door.

Claims (5)

  A roller shaft having a flange and fixed to the fixing member; and a resin roller made of a synthetic resin material rotatably supported by the roller shaft, the roller shaft being a polyether ether ketone (PEEK) resin A roller device for a vehicle, characterized in that the surface treatment is performed with a surface treatment material containing as a main component.   2. The vehicle roller device according to claim 1, wherein the surface treatment material contains 10 wt% to 50 wt% of a fluororesin.   The vehicular roller device according to claim 1, wherein the synthetic resin material of the resin roller has a flexural modulus of 9000 MPa or more.  The said collar part is united with the said roller shaft, The movement of the said resin roller with respect to the axial direction of the said roller shaft is controlled, The any one of Claim 1 thru | or 3 characterized by the above-mentioned. The roller apparatus for vehicles as described in.   The outer peripheral portion of the flange portion is larger than the outer peripheral portion of the resin roller in the direction in which the load is applied when the resin roller is elastically deformed when a load is applied to the resin roller when the flange portion is absent. The roller device for a vehicle according to any one of claims 1 to 4, wherein the roller device is for a vehicle.

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