JP5149643B2 - Automotive wheel - Google Patents

Description

  The present invention relates to an automobile wheel that is integrated by fitting and welding a wheel rim to which a tire is mounted and a wheel disk to which an axle is connected.

  There is a so-called two-piece type vehicle wheel that is formed by welding a substantially cylindrical wheel rim and a substantially disc-shaped wheel disc. As this two-piece type vehicle wheel, a drop fitting type in which a wheel disc is fitted in the drop portion of the wheel rim and welded, or a wheel disc is fitted in the front bead seat portion of the wheel rim and welded. The bead fitting type is well known. A full-face type is also known in which a front rim flange portion for supporting a front bead of a tire is provided on the outer peripheral edge of the wheel disc. In the case of this full face type, the wheel rim has a configuration in which a front bead seat portion is provided on one opening periphery and a back rim flange portion is provided on the other opening periphery. It is abutted against the back of the disc and welded. This full-face type automobile wheel has an excellent advantage that the design surface of the wheel disc can be secured larger and the design can be improved as compared with the drop fitting type and the bead fitting type described above. ing.

  However, in the case of the full-face type described above, since one opening peripheral edge of the wheel rim is abutted against the rear surface of the wheel disk and welded, it is difficult to match the central axes of the wheel rim and the wheel disk. For this reason, a dedicated device for matching the central axes of the wheel rim and the wheel disk is required, and the number of manufacturing steps increases, resulting in an increase in manufacturing time. Furthermore, it is necessary to securely weld the opening rim of the wheel rim and the wheel disk over the entire circumference. This causes a problem that air in the tire leaks when the tire is assembled to the automobile wheel if the all-around welding is incomplete. For this reason, in this welding process in which the entire circumference is welded, the welding time becomes longer and the amount of filler metal used also increases. For this reason, there is a problem that the manufacturing cost increases as a whole.

In addition, a configuration has been proposed in which an outer peripheral edge portion of a wheel disk is fitted and welded to a front rim flange portion of a wheel rim as an automobile wheel (for example, Patent Document 1). In the case of this configuration, the design surface of the wheel disk can be secured larger than the above-described bead fitting type or drop fitting type, so that the design property can be improved. Furthermore, since the outer peripheral edge of the wheel rim is fitted into the front rim flange portion of the wheel rim, the center axis of the wheel rim and the wheel disc can be relatively easily matched. No special equipment like Further, it is not necessary to weld the entire circumference as in the full face type.
JP-A-9-2003

  By the way, in the above-mentioned full-face type configuration, it exists inside the front side bead seat part formed by the area outside the decorative hole provided in the wheel disc and the front side bead seat part of the wheel rim. There is a phenomenon that water, sand, etc. are easily collected in the inner peripheral airspace. A similar phenomenon can occur even in the configuration of Patent Document 1 described above. However, this Patent Document 1 does not disclose a configuration for solving this phenomenon. Therefore, there is a demand for a solution to this phenomenon for use as an automobile wheel.

  Further, in the configuration of Patent Document 1 described above, it is required to suppress the occurrence of distortion when the outer peripheral edge of the wheel disk is fitted and assembled to the front rim flange portion of the wheel rim. . This is because by suppressing this distortion, it is possible to suppress the shake that occurs during the traveling of the automobile.

  The present invention proposes an automobile wheel that suppresses accumulation of water, sand, and the like in an inner peripheral air space formed inside a front bead seat portion of a wheel rim.

  The first invention of the present invention is an automotive wheel formed by fitting and welding a wheel rim to which a tire is mounted and a wheel disk to which an axle is connected, and the wheel rim supports the front bead of the tire. The front side rim flange portion is composed of a rising peripheral portion that rises outward from the front bead seat portion and a curved peripheral portion that curves from the rising peripheral portion to the front side, and a wheel disk is provided on the outer peripheral edge thereof. Further, a fitting outer peripheral portion that is fitted in the curved peripheral portion of the front rim flange portion and is seated on the front side surface of the rising peripheral portion, and inward from the outer peripheral end of the fitting outer peripheral portion from the inner peripheral surface of the front bead seat portion A plurality of drain recesses arranged at predetermined intervals in the circumferential direction, and the wheel disk fitting outer periphery is fitted to the wheel rim front rim flange, A vehicle wheel, characterized in that it is made integral with the wheel rim by welding from the back side of the disk.

  In such a configuration, the drain recess formed in the wheel disk has its recess inner end positioned inward from the inner peripheral surface of the front bead seat portion of the wheel rim. A so-called drain hole can be formed by an inward air space that is on the inner side of the inner peripheral surface of the front bead sheet portion. As a result, water, sand, or the like is formed in the air space (hereinafter referred to as the bead seat inner peripheral air space) that is formed by the outer peripheral edge of the wheel disc and the front bead seat portion of the wheel rim and that exists inside the front bead seat portion. Even if water enters, it is discharged from the drain hole formed by the drain recess, so that it can be suppressed that water, sand and the like are accumulated in the inner circumferential air region of the bead sheet.

  Moreover, the fitting outer peripheral part has a form that is divided into a plurality in the circumferential direction by a plurality of drain recesses. And since this drainage recessed part is formed so that it may reach inward from the inner peripheral surface of a front side bead sheet part, each area divided by each drainage recessed part of a fitting outer peripheral part is the diameter. The direction width is comparatively long, and it is easy to bend, and it is easy to fit in the front side rim flange part of a wheel rim. Therefore, in the process of fitting the wheel disc to the wheel rim, the force required for the fitting (hereinafter, fitting pressure) can be reduced. Furthermore, it is possible to suppress the occurrence of distortion in the fitting outer peripheral portion of the wheel disc and the curved peripheral portion of the front rim flange portion of the wheel rim during the fitting, and the wheel disc and the front side of the wheel rim caused by the distortion can be suppressed. It is also possible to suppress a decrease in roundness of the flange portion. Thus, the wheel disc and the wheel rim can be fitted properly and stably, and the excellent effect of suppressing the shake generated during the traveling of the automobile can be exhibited.

  In the automobile wheel according to the first invention described above, the curved peripheral portion constituting the front rim flange portion of the wheel rim is formed so that the peripheral end portion is bent inward, and the wheel disc is fitted. The outer peripheral part is adapted to be fitted into the curved peripheral part between the peripheral end part and the rising peripheral part of the curved peripheral part, and the drain recess of the wheel disk is connected to the inner end of the concave part. A configuration is proposed that is formed so as to be positioned inward from the outer end edge of the welded portion where the fitting outer peripheral portion of the wheel disk and the wheel rim are welded.

  Here, since the curved peripheral portion constituting the front rim flange portion is configured to be bent inward, the inner diameter of the peripheral end portion is smaller than the inner diameter of the most convex portion on the outer side. . The outer diameter of the wheel disc is larger than the inner diameter of the peripheral end portion of the curved peripheral portion because the fitting outer peripheral portion is fitted into the curved peripheral portion. Even in such a wheel disc and a wheel rim, as described above, the fitting outer peripheral portion of the wheel disc of the present invention is easily bent. Can be fitted. Therefore, when fitting, it can suppress that a fitting outer peripheral part, a curved peripheral part, etc. produce distortion, and can suppress the roundness fall of the front side flange part of a wheel disc or a wheel rim.

  In such a configuration, since the curved peripheral portion of the front rim flange portion is bent inward, the fitting outer peripheral portion of the wheel disk is connected to the peripheral end portion and the rising peripheral portion of the curved peripheral portion. Can be more stably fitted and held.

  Furthermore, in this configuration, since the inner end of the recessed portion of the drain recess is positioned inward in the radial direction compared to the outer end edge of the welded portion, after forming this welded portion, Compared with before the formation of the welded portion, the rigidity of the fitting outer peripheral portion of the wheel disk is improved and the bending becomes difficult. Therefore, when the wheel disc is fitted to the wheel rim, the fitting outer peripheral portion of the wheel disc is easily bent and can be relatively easily fitted into the front flange portion of the wheel rim. After the welding, the rigidity of the fitting outer peripheral portion is improved and the rigidity as the wheel disk is also improved. Thus, it is possible to properly and stably fit the wheel disc and the wheel rim, and to exhibit an excellent function and effect of suppressing the shake that occurs during traveling of the automobile.

  In addition, since the rigidity of the wheel disk is improved by forming the welded portion as described above, the automobile wheel having this configuration has the same level of rigidity of the wheel disk as the configuration without the drain recess. obtain. As a result, for the purpose of improving the rigidity of the wheel disc, it is not necessary to increase the thickness of the wheel disc, so that the problem of weight increase associated with this does not occur, and the weight is reduced according to the drain recess. Can be obtained.

  According to a second aspect of the present invention, there is provided an automotive wheel formed by fitting and welding a wheel rim to which a tire is attached and a wheel disk to which an axle is connected, and the wheel rim supports a front bead of the tire. The front side rim flange portion is composed of a rising peripheral portion that rises outward from the front bead seat portion and a curved peripheral portion that curves from the rising peripheral portion to the front side, and a wheel disk is provided on the outer peripheral edge thereof. Further, a fitting outer peripheral portion that is fitted in the curved peripheral portion of the front side rim flange portion and is seated on the front side surface of the rising peripheral portion, and an inner end surface of the front side bead seat portion from the outer edge of the fitting outer peripheral portion. And a drainage recess provided on the outside of the raised portion, and the fitting outer periphery of the wheel disc is fitted to the front rim flange portion of the wheel rim. To a vehicle wheel, wherein said raised portion is made integral with the wheel rim by welding from the back side of the wheel disc so as not to weld.

  In such a configuration, the bead seat inner circumferential air space communicates with the water drain recess through a gap formed between the raised portion of the wheel disk and the rising peripheral portion of the front rim flange portion, so-called water drainage. It constitutes a hole. By this drain hole, it is possible to suppress the accumulation of water, sand and the like in the bead seat inner circumferential air region, as in the first invention.

  Moreover, since the rigidity of the wheel disk of this structure is improved by the raised portion, the durability of the automobile wheel can be improved as a whole.

  Furthermore, since this structure can form a water drain recessed part comparatively small, it can be effectively applied when it is desired to design the water drain recessed part to be small. On the other hand, since the raised portion can also be a designable component, it can contribute to the improvement of the designability by appropriately setting the form of the raised portion.

  In addition, in this configuration, the component part composed of the raised portion and the drain recess portion may be provided in one place on the wheel disk, or a plurality of places may be provided.

  In the automobile wheel according to the second invention described above, the curved peripheral portion constituting the front rim flange portion of the wheel rim is formed so that the peripheral end portion is bent inward, and the wheel disk is fitted. A configuration is proposed in which the outer peripheral portion is fitted into the curved peripheral portion between the peripheral end portion and the rising peripheral portion of the curved peripheral portion.

  Here, since the curved peripheral portion constituting the front rim flange portion is configured to be bent inward, the inner diameter of the peripheral end portion is smaller than the inner diameter of the most convex portion on the outer side. . The outer diameter of the wheel disc is larger than the inner diameter of the peripheral end portion of the curved peripheral portion because the fitting outer peripheral portion is fitted into the curved peripheral portion. Therefore, in such a configuration, the fitting outer peripheral portion of the wheel disc can be more securely fitted and held between the peripheral end portion and the rising peripheral portion of the curved peripheral portion. The rim is more strongly joined.

  In the automobile wheel according to the first and second inventions described above, the wheel rim rises outward from the backside bead seat portion that supports the backside bead of the tire, and from the rising periphery to the backside. It is provided with a back side rim flange part composed of a curved peripheral part, and the front side rim flange part is formed so that the thickness of the curved peripheral part is thinner than the curved peripheral part of the back side rim flange part. A configuration is proposed.

  Here, since the front outer rim flange portion is fitted with the fitting outer peripheral portion of the wheel disc, the load acting on the tire during traveling can be received by the wheel disc. Therefore, even when the front rim flange portion is thinner than the back rim flange portion as in this configuration, desired strength and durability can be exhibited.

  In such a configuration, the curved peripheral portion on the front side constituting the front rim flange portion is easily bent, so that it can be more easily fitted when fitting the fitting outer peripheral edge of the wheel disk. The fitting pressure required for the inner fitting can be reduced. Therefore, since it can suppress that distortion arises when fitting, it is excellent in the effect which further suppresses the shake | fluctuation by the load which generate | occur | produced during driving | running | working, and can demonstrate high durability. In addition, since the front rim flange portion is thin, the weight can be reduced and the amount of material can be reduced.

  In the first invention of the present invention, the wheel disk is provided with a predetermined interval in the circumferential direction with a drain recessed portion extending from the outer end of the fitting outer peripheral portion provided on the outer peripheral edge thereof to the inner side of the inner peripheral surface of the front bead seat portion. The fitting outer peripheral portion is fitted in the curved peripheral portion constituting the front rim flange portion of the wheel rim and is fitted on the front side surface of the rising peripheral portion of the rim flange portion. In addition, it is welded from the back side of the wheel disc and integrated with the wheel rim. In this configuration, water, sand, or the like that has entered the bead seat inner peripheral air space can be discharged by the drain recess, so that it is possible to suppress accumulation of water, sand, or the like in the bead seat inner peripheral air region. In addition, since the fitting outer peripheral portion is easily bent due to the provision of a plurality of drain recesses, it can be fitted relatively easily when fitting to the front rim flange portion, and distortion occurs. Can be suppressed. Therefore, it has an excellent effect of suppressing the shake that occurs during the traveling of the automobile, and can exhibit high durability.

  In the first invention described above, the curved peripheral portion constituting the front rim flange portion of the wheel rim is formed so as to bend the peripheral end portion inward, and the fitting outer peripheral portion of the wheel disc is The curved peripheral portion is fitted into the curved peripheral portion between the peripheral end portion and the rising peripheral portion, and the drain recess of the wheel disk is connected to the inner end of the concave portion of the wheel disk. In the case where the outer peripheral edge of the welded portion where the combined outer peripheral portion and the wheel rim are welded is formed so as to be positioned inward from the outer edge of the welded portion, the fitting outer peripheral portion is easily bent when mated. Therefore, it is possible to relatively easily fit into such a curved peripheral portion, suppress distortion and local occurrence, and raise the fitting outer peripheral portion with the peripheral end portion of the curved peripheral portion. Since it can be more stably fitted and held with the periphery, automatic The effect of suppressing the vibration occurring during the running of further improved. In addition, since the outer end edge of the welded portion is positioned radially outward as compared with the inner end of the recessed portion of the water drainage recess, the rigidity of the fitting outer peripheral portion is improved after welding. And the wheel rim can be appropriately and stably fitted and held, and the effect of suppressing the shake generated during the traveling of the automobile is further improved. Furthermore, this configuration can be reduced in weight according to the drain recess while maintaining the rigidity of the wheel disk properly.

  The second invention of the present invention has a raised portion in which the wheel disk protrudes outward from the outer peripheral edge of the fitting outer peripheral portion provided at the outer peripheral edge thereof to the inner side from the inner peripheral surface of the front bead seat portion. And a drainage recess provided on the outside of the raised portion, the fitting outer peripheral portion is fitted into the curved peripheral portion constituting the front rim flange portion of the wheel rim, and the rising periphery of the rim flange portion is provided. It fits so that it may seat on the front side surface of a part, it welds from the back side of a wheel disc, and is integrated with a wheel rim. In this configuration, water and sand that have entered the bead seat inner air space can be discharged by the raised portion and the drain recess, so that accumulation of water and sand in the inner air space of the bead sheet can be suppressed. obtain. Further, the wheel disk has higher rigidity at the raised portion, and can exhibit high durability. Furthermore, since a relatively small drain recess can be formed, the present invention can be effectively applied to a design in which the drain recess is small. Furthermore, it can contribute to the improvement of this designability by making a protruding part into the designable component of a wheel disk.

  In the second invention described above, the curved peripheral portion constituting the front side rim flange portion is formed by bending the peripheral end portion inward, and the fitting outer peripheral portion of the wheel disk is formed with the curved peripheral portion. In the case of a configuration in which the curved peripheral portion is fitted between the peripheral end portion and the rising peripheral portion, the fitting outer peripheral portion can be more stably fitted and held by the front rim flange portion. The wheel disc and the wheel rim are more strongly joined.

  Further, in the first invention and the second invention described above, the front rim flange portion is formed so that the thickness of the curved peripheral portion is thinner than the curved peripheral portion of the back rim flange portion. The front rim flange portion is easily bent and can be fitted relatively easily when fitting the outer peripheral edge of the wheel disc into the fitting outer peripheral portion or the front rim flange portion. The effect of suppressing the occurrence of distortion is further improved. Further, as the curved peripheral portion on the front side becomes thinner, the weight can be reduced and the amount of material can be reduced.

  Embodiments 1 to 3 of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a plan view of an automotive wheel 1 according to a first embodiment of the present invention, and FIG. 2 is a longitudinal sectional view of the automotive wheel 1. This automobile wheel 1 is a so-called two-piece type steel wheel formed by joining a wheel rim 2 formed from a steel plate and a wheel disc 3. The vehicle wheel 1 has a configuration in which a fitting outer peripheral portion 24 provided on the outer peripheral edge of the wheel disc 3 is fitted into the front rim flange portion 11 of the wheel rim 2 and welded. In the present embodiment, the direction from the back surface side of the wheel disk 3 toward the design surface side is the front direction. A direction toward the central axis S1 of the automobile wheel 1 along the wheel radial direction is defined as an inward direction.

  In the wheel rim 2 described above, a substantially cylindrical shape is formed, and front and back rim flange portions 11 and 12 that support beads on the front and back sides of the tire are provided at both ends of the opening rim. Front and back beat seat portions 13 and 14 for supporting and fixing beads on the front and back of the tire are coupled. Further, a drop portion 15 is provided between the front and back bead sheet portions 13 and 14 for dropping the front and back bead of the tire when the tire is mounted.

  Here, the front and back rim flange portions 11 and 12 have the same form in the first embodiment, and the front and back rising peripheral portions 17 are formed so as to stand outward from the front and back bead seat portions 13 and 14. 18 and the front and back rising peripheral portions 17 and 18 are respectively bent to the front side or the back side, and are further bent inward so as to be bent inwardly, and are curved front and back curved peripheral portions 19 and 20. (See FIGS. 2 and 3). The front and back rim flange portions 11 and 12 are convex peripheral portions 19b in which the inner diameters of the peripheral end portions 19a and 20a of the curved peripheral portions 19 and 20 protrude outwardly from the curved peripheral portions 19 and 20, respectively. , 20b is smaller than the inner diameter.

  Such a wheel rim 2 has a substantially rectangular steel flat plate formed into a cylindrical shape by butt-welding the short sides thereof, and then rotating a predetermined metal mold inside and outside the cylinder. Forming can be performed by roll processing by pressing from both sides, and a conventional forming method can be applied. Therefore, the description of this molding process is omitted.

  On the other hand, the wheel disc 3 described above has a substantially disk shape as shown in FIG. 4, and a hub mounting portion 21 connected to the hub of the axle is provided at the center thereof. A plurality of spoke portions 22 are provided at regular intervals in the circumferential direction so as to protrude outward along the radial direction. A decorative hole 23 is formed between the spoke portions 22 in the circumferential direction, and a fitting outer peripheral portion 24 is provided on the outer peripheral edge of the wheel disk 3. A hub hole 27 is formed in the center of the hub mounting portion 21, and a plurality of bolt holes 28 are provided so as to be located at the outer side in the radial direction and at equal intervals in the circumferential direction. Yes. Each part of the wheel disk 3 is formed concentrically around the central axis S1 of the wheel disk 3.

  Here, the spoke portion 22 is formed so as to rise from the peripheral edge of the hub attachment portion 21 to the front side, and the fitting outer peripheral portion 24 is formed so as to be along a plane direction orthogonal to the central axis S <b> 1 of the wheel disk 3. Has been. Further, the wheel disk 3 is provided with a drain recess 25 along the center line in the radial direction of each spoke 22 at the outer peripheral edge thereof. The drain recess 25 extends inward from the outer end of the fitting outer peripheral portion 24, and the inner end 25 a of the recess is in the state where the wheel disk 3 and the wheel rim 2 are engaged with each other. It forms so that it may become an inward position from the surrounding surface 13a (refer FIG. 2, FIG. 3 (B)). In the first embodiment, six spoke portions 22 are provided at equal intervals in the circumferential direction, and six drainage recesses 25 are also provided at equal intervals in the circumferential direction.

  Note that the outer peripheral edge of the wheel disk 3 is constituted by the fitting outer peripheral portion 24 described above. In the first embodiment, the outer diameter of the wheel disk 3 is substantially the same as the inner diameter of the convex peripheral portion 19b of the curved peripheral portion 19 constituting the front rim flange portion 11 of the wheel rim 2 described above. It is set to. Therefore, the outer diameter of the wheel disc 3 is larger than the inner diameter of the peripheral end portion 19 a of the curved peripheral portion 19 constituting the front side rim flange portion 11.

  Such a wheel disk 3 can be formed by pressing a substantially circular steel flat plate, and a conventional forming method can be applied. Therefore, the description of this molding process is omitted.

  The vehicle wheel 1 according to the first embodiment is formed by integrating the wheel rim 2 and the wheel disc 3 described above and welding them. That is, the wheel disc 3 is pushed in from the front side of the front rim flange portion 11 of the wheel rim 2, and the fitting outer peripheral portion 24 of the wheel disc 3 is fitted into the curved peripheral portion 19 of the front side rim flange portion 11. The rear surface of the fitting outer peripheral portion 24 is seated on the front side surface of the rising peripheral portion 17 of the front rim flange portion 11. And the fitting outer peripheral part 24 and the area | region from the front side bead seat part 13 of the wheel rim 2 to the front side rim flange part 11 are welded by arc welding from the back side. Here, arc welding is performed so as to weld between the respective drainage recesses 25 provided at six locations in the circumferential direction of the wheel disk 3, and six weld portions 30 are formed in the circumferential direction ( (See FIG. 1). And this welding part 30 is formed so that the outer end edge may become an outer position compared with the recessed part inner end 25a of the draining recessed part 25. FIG. That is, the radial distance D1 from the central axis S1 of the wheel disk 3 to the outer end edge of the welded portion 30 is longer than the radial distance D2 from the central axis S1 to the concave inner end 25a of the drain recess 25. (D1> D2).

  As shown in FIG. 1, the vehicle wheel 1 is a wheel disc except that a peripheral end portion 19 a of a curved peripheral portion 19 constituting the front rim flange portion 11 of the wheel rim 2 is exposed on the design surface side. 3 is a design surface. Therefore, the vehicle wheel 1 of the first embodiment can ensure a larger design surface of the wheel disk 3 than the conventional drop fitting type or bead fitting type automotive wheel described above, and has excellent design properties. Can be demonstrated. The design surface of the wheel disc 3 has substantially the same size as the full face type automobile wheel described above.

  Furthermore, as described above, each drain recess 25 formed in the fitting outer periphery 24 of the wheel disk 3 has an inner end 25a of the recess positioned inward from the inner periphery 13a of the front bead sheet portion 13. It is provided as follows. That is, the drainage recess 25 has a longer radial width than the radial width of the rising peripheral portion 17 of the front rim flange portion 11 of the wheel rim 2 (see FIGS. 2 and 3B). ). And the so-called drain hole 26 which penetrates the said wheel disk 3 in the front and back direction is comprised by the inner side airspace inside the inner peripheral surface 13a of the front side bead seat part 13 of each drain recessed part 25. As shown in FIG. As shown in FIG. 2, the drain hole 26 is formed by the outer peripheral edge of the wheel disk 3 and the front side bead seat portion 13 of the wheel rim 2, and is located inside the front side bead seat portion 13. Opening to the inner airspace 29. Therefore, water, sand, or the like that easily collects in the bead sheet inner circumferential air space 29 can be discharged through each drain hole 26.

  Moreover, the fitting outer peripheral part 24 of the wheel disc 3 becomes a form which was divided | segmented into the circumferential direction by each water drain recessed part 25 provided in six places like FIG. And as above-mentioned, since the water draining recessed part 25 is formed inward from the inner peripheral surface 13a of the front side bead sheet part 13, each area | region of the fitting outer peripheral part 24 divided | segmented by each water draining recessed part 25 Has a relatively wide radial width. Therefore, each area | region divided | segmented by each drainage recessed part 25 of the fitting outer peripheral part 24 becomes easy to bend, respectively. Thus, as described above, when the wheel disc 3 is pushed in from the front side of the front rim flange portion 11 of the wheel rim 2 to be fitted, the fitting outer peripheral portion 24 of the wheel disc 3 is moved to the front rim flange portion 11. It is easy to fit in the curved peripheral portion 19. Even if the inner diameter of the peripheral end portion 19a of the curved peripheral portion 19 constituting the front side rim flange portion 11 is smaller than the outer diameter of the wheel disc 3, as in the first embodiment, It is easy to fit the fitting outer peripheral portion 24 into the curved peripheral portion 19. And since it can suppress that distortion arises in the fitting outer peripheral part 24, the front side rim flange part 11, etc. when fitting the wheel disc 3 and the wheel rim 2, the fitting outer peripheral part 24 and the front side rim flange part The fitting state with the 11 curved peripheral portions 19 is stabilized. Further, since the curved peripheral portion 19 of the front rim flange portion 11 is bent inwardly, the wheel disk 3 is between the peripheral end portion 19 a and the rising peripheral portion 17 of the curved peripheral portion 19. The fitting outer peripheral portion 24 can be fitted and held more stably. Thus, the automobile wheel 1 has a high effect of suppressing vibrations that occur during traveling and can exhibit excellent durability.

  In addition, since the fitting outer peripheral portion 24 can be fitted into the curved peripheral portion 19 of the front rim flange portion 11 relatively easily, the fitting required to push the wheel disc 3 into the wheel rim 2 when fitting is performed. The resultant force can also be reduced. Therefore, the workability of the fitting work can be improved, and the energy required for the apparatus used for fitting can be reduced.

  Furthermore, in the configuration of the first embodiment, as described above, the recess inner end 25 a of the water drain recess 25 is positioned inward from the outer end edge of the welded portion 30. That is, the radial distance D1 from the central axis S1 of the wheel disk 3 to the outer end edge of the welded portion 30 is longer than the radial distance D2 from the central axis S1 to the concave inner end 25a of the drain recess 25. It is provided to become. With this configuration, after the wheel disc 3 and the wheel rim 2 are welded, the fitting outer peripheral portion 24 of the wheel disc 3 is hardly bent by the welded portion 30. Thus, when the wheel disk 3 is fitted, it can be easily fitted due to the ease of bending of the fitting outer peripheral portion 24, and after fitting and welding, the fitting outer peripheral portion 24. The effect of holding the fitting can be further enhanced by improving the rigidity of the. In the vehicle wheel 1 of the first embodiment, the rigidity of the wheel disk 3 can be almost the same level as that of the conventional configuration having no drain recess. Here, normally, when the rigidity is insufficient, it is dealt with by a method of increasing the plate thickness. However, it is not necessary to apply such a method to the configuration of the first embodiment, and the weight increase due to the increase in the plate thickness does not occur. . And in the structure of the present Example 1, since the drainage recessed part 25 is provided, it can be reduced in weight according to this drainage recessed part 25. FIG.

  The wheel disk 3 of the first embodiment is made of steel as described above, and is usually formed by pressing a steel plate material. In this wheel disk 3 forming step, after press working, the outer peripheral edge of the wheel disk 3 is cut by a lathe or the like, and the shape of the outer peripheral edge of the wheel disk 3 is changed to the shape of the inner peripheral surface of the front rim flange portion 11. Molded to follow. As the cutting process, a process such as chamfering the outer peripheral edge of the wheel disk 3 may be performed. Moreover, the roundness of the outer periphery of the wheel disk 3 can also be improved by cutting. By forming the wheel disc 3 having such a high roundness, when the wheel rim 2 is fitted to the wheel rim 2, the wheel rim 2 follows the outer peripheral edge of the wheel disc 3. Can be increased. Along with this, the roundness of the automobile wheel 1 is also increased, and it is possible to further suppress the shake that occurs during the traveling of the automobile.

  In the automotive wheel 51 of the second embodiment, as shown in FIG. 5, the longitudinal direction of each spoke portion 56 (from the outer edge of the fitting outer peripheral portion 54 provided on the outer peripheral edge of the wheel disc 53 ( (Radial direction) is provided with raised portions 57 extending inward from the inner peripheral surface 13a of the front bead sheet portion 13 respectively. A drain recess 55 is formed outside each raised portion 57. Here, the raised portion 57 is formed in a shape that rises in an arch shape to the front. The drain recess 55 is formed such that the inner end 55a of the recess is located outward from the inner peripheral surface 13a of the front bead sheet portion 13 (see FIGS. 6 and 7B). That is, the drainage recess 55 has a radial width that is shorter than the radial width of the rising peripheral portion 17 of the front rim flange portion 11 of the wheel rim 2 (see FIGS. 6 and 7B). .

  In the second embodiment, the wheel disk 53 is configured to include the six spoke portions 56 as in the first embodiment, and the raised portions 57 and the drainage concave portions 55 are each provided in six locations. Is formed.

  Even in the second embodiment, the fitting outer peripheral portion 54 of the wheel disk 53 is formed along a plane direction orthogonal to the central axis S2 of the wheel disk 53, as in the first embodiment. And the outer edge of the fitting outer peripheral part 54 becomes a form which was divided | segmented in the circumferential direction by each drainage recessed part 55. FIG.

  In addition, the wheel 51 for motor vehicles of the present Example 2 is the structure by which the wheel disc 53 was provided with the protruding part 57 and the draining recessed part 55, About the other structure, it is the same structure as Example 1 mentioned above, and is the same Constituent elements are denoted by the same reference numerals, and description thereof is omitted.

  Even in the automobile wheel 51 of the second embodiment, as shown in FIGS. 6 and 7, the fitting outer peripheral portion 54 of the wheel disk 53 is connected to the front side of the wheel rim 2 as in the first embodiment. It fits in the rim flange part 11 and is welded by arc welding from the back side. Here, arc welding is performed between the circumferential directions of the raised portions 57 so as not to weld the raised portions 57, and the welded portions 30 are formed at six locations in the circumferential direction.

  In the automobile wheel 51, a tunnel-shaped gap is formed between the raised portion 57 of the wheel disc 53 and the rising peripheral portion 17 of the front rim flange portion 11 of the wheel rim 2, and the gap is formed in the bead seat. The peripheral air region 29 and the water drain recess 55 communicate with each other (see FIG. 7B). A so-called drain hole 58 is constituted by the tunnel-shaped gap formed by the raised portion 57 and the drain recess 55, and the water that has entered the inner airspace 29 of the bead sheet is formed as in the first embodiment. And sand can be discharged, and accumulation of water and sand can be suppressed.

  Further, the raised portions 57 arranged at equal intervals in the circumferential direction improve the rigidity of the wheel disc 53. And the effect which hold | maintains in the state which fitted the wheel disc 53 and the wheel rim 2 increases.

  Further, each raised portion 57 of the wheel disk 53 contributes to the design of the automobile wheel 51. Therefore, it is possible to appropriately improve the design by setting various forms such as the length, width, and height of the protruding portion 57 to protrude outward. On the other hand, the drain recess 55 of the second embodiment is formed to be relatively small, for example, smaller than the configuration of the first embodiment described above. Therefore, the configuration of the second embodiment is effective when it is desired to design the design surface of the wheel disk 53 with a relatively small drain recess 55.

  Furthermore, in the configuration of the second embodiment, since the wheel rim 2 having the same configuration as that of the first embodiment described above is used, the peripheral end portion 19a of the curved peripheral portion 19 of the front rim flange portion 11 is used. And the fitting outer peripheral portion 54 of the wheel disk 53 can be more stably fitted and held between the rising peripheral portion 17 and the rising peripheral portion 17.

  In the configuration of the third embodiment, as shown in FIGS. 8 and 9, the wheel rim 62 compares the curved peripheral portion 69 constituting the front side rim flange portion 66 with the curved peripheral portion 20 of the back side rim flange portion 12. And thin. The curved peripheral portion 69 of the front rim flange portion 66 has a lower rigidity than the curved peripheral portion 20 of the back rim flange portion 12 and is easily bent.

  Here, the front side rim flange portion 66 is composed of the rising peripheral portion 71 and the thin curved peripheral portion 69 described above in the same manner as in the first embodiment described above, and at the peripheral end portion 69 a of the curved peripheral portion 69. The inner diameter is smaller than the inner diameter of the convex peripheral portion 69b of the curved peripheral portion 69 that protrudes outward most.

  By fitting the wheel disc 53 having the same configuration as that of the above-described second embodiment to the above-described wheel rim 62, the automobile wheel 61 of the third embodiment is obtained. That is, the fitting outer peripheral portion 54 of the wheel disc 53 is fitted into the curved peripheral portion 69 of the front rim flange portion 66 of the wheel rim 62 and seated on the rising peripheral portion 71. Then, the wheel disc 53 and the wheel rim 62 are integrated by arc welding from the back side. Here, arc welding is performed between the circumferential directions of the raised portions 57 so as not to weld the raised portions 57 as in the second embodiment.

  When the wheel disc 53 is fitted, the curved peripheral portion 69 of the front rim flange portion 66 is easily bent, so that it can be fitted relatively easily. Therefore, the effect of suppressing the occurrence of distortion or the like in the wheel disc 53 or the wheel rim 62 is further improved. Thus, the automobile wheel 61 of the third embodiment has a high effect of suppressing runout generated during traveling and can exhibit further excellent durability. The fitting force required when fitting the wheel disc 53 and the wheel rim 62 can be further reduced.

  Further, the wheel rim 62 is reduced in weight with the reduction in thickness because the curved peripheral portion 69 of the front side rim flange portion 66 is reduced in thickness. Therefore, by attaching the automobile wheel 61 to the automobile, an excellent effect that the unsprung load can be reduced and the maneuverability and fuel efficiency can be improved can be produced. Moreover, since the amount of material (unit) for molding the wheel rim 62 can be reduced by the thinning, the material cost can be reduced.

  In the configuration of the third embodiment, since the curved peripheral portion 69 of the front rim flange portion 66 is thinned, the curved peripheral portion 69 has a lower strength than the curved peripheral portion 20 of the back side rim flange portion 12. ing. However, since the fitting outer peripheral portion 54 of the wheel disc 53 is fitted in the curved peripheral portion 69 of the front rim flange portion 66 in the circumferential direction, a load acting on the curved peripheral portion 69 is applied to the wheel disc 53. Can support. Therefore, the vehicle wheel 61 can exhibit desired strength and durability.

  In the configuration of the third embodiment, the curved peripheral portion 69 constituting the front side rim flange portion 66 of the wheel rim 62 is thinner than the curved peripheral portion 20 of the back side rim flange portion 12. The configuration is the same as that of the second embodiment described above, the same components are denoted by the same reference numerals, and the description thereof is omitted. However, even in the configuration of the third embodiment, it is possible to suppress the accumulation of water, sand, and the like in the bead sheet inner circumferential air space 29 formed inside the front side bead sheet portion 13, similar to the second embodiment described above. Has an effect.

  On the other hand, as another configuration of the above-described first to third embodiments, the wheel disk 3 of the first embodiment and the wheel rim 62 of the third embodiment may be fitted (not shown). In this case, due to the synergistic effect of the ease of bending of the fitting outer peripheral portion 24 of the wheel disc 3 and the curved peripheral portion 69 of the front rim flange portion 66 of the wheel rim 62, the hole disc 3 and the wheel rim 62 are The force required for the fitting can be further reduced, and the effect of suppressing the occurrence of distortion and the like is further improved. Therefore, it is possible to further suppress the occurrence of vibration or the like during traveling of the automobile, and the durability is further improved.

  Further, in the configuration of the third embodiment described above, the curved peripheral portion 69 of the front rim flange portion 66 is thinned. However, as other configurations, the rising peripheral portion and the curved peripheral portion of the front rim flange portion are used. It can also be set as the structure which thins. In the case of this configuration, the front rim flange portion is more easily bent, so that the effect of suppressing distortion at the time of fitting is high, and vibration that occurs during traveling can be further suppressed. Here, even in the rising peripheral portion of the front side rim flange portion, the fitting outer peripheral portion of the wheel disk is seated and held, so that desired strength and durability can be exhibited.

  Moreover, in the structure of Examples 1-3 mentioned above, although it is the structure which arrange | positioned the water drain recessed parts 25 and 55 at equal intervals in the circumferential direction, it seems that the space | interval of each water drain recessed part differs, respectively. It is also possible to adopt a configuration set in (1). For example, it is good also as a structure which provides a water drain recessed part in the outer side of a specific spoke part, and does not provide a water drain recessed part in the outer side of all the spoke parts. Moreover, it is good also as a structure which provides a drain recessed part in the outer side of a decoration hole.

  Furthermore, in the configuration of the second and third embodiments, the wheel disk 53 is provided with the raised portion 57 and the drainage concave portion 55 for each of the spoke portions 56. However, the present invention is not limited to this. A number of spoke portions 56 may be provided with raised portions 57 and drainage recesses 55.

  Moreover, in the structure of Examples 1-3 mentioned above, it is set as the structure which comprises the curved periphery parts 19 and 69 by which the front side rim flange parts 11 and 66 were bent inward, but this front side The form of the rim flange portion is not limited to this and can be variously set. For example, as shown in FIG. 10, the front rim flange portion 86 of the wheel rim 82 constituting the automobile wheel 81 includes a curved peripheral portion 87 that is bent outward from the outer end of the rising peripheral portion 17. You can also Here, the curved peripheral portion 87 of the front rim flange portion 86 is not bent inward like the curved peripheral portions 19 and 69 of the first to third embodiments. Therefore, when the wheel disc 3 of the first embodiment is fitted to the wheel rim 82 provided with the front rim flange portion 86, the fitting outer peripheral portion 24 can be fitted in without being bent. . Similarly, the wheel discs of Examples 2 and 3 can be configured to be fitted into the wheel rim 82. Moreover, the curved peripheral part of this front side rim flange part can also be set as the structure thinner than the thickness of the back side rim flange part similarly to Example 3 mentioned above.

  In this invention, it is not limited to the Example mentioned above, About another structure, it can change suitably within the range of the meaning of this invention. For example, even in an automobile wheel having the same configuration molded from an aluminum alloy or a magnesium alloy, the same function and effect can be exhibited. Further, the welding of the wheel disc and the wheel rim is not limited to the arc welding described above, and can be performed by gas welding or the like.

It is a top view of the wheel 1 for cars concerning Example 1 concerning the present invention. It is LL sectional drawing of FIG. 1 of the automotive wheel 1 same as the above. (A) The enlarged view of the X section shown in FIG. 2, (B) The enlarged view of the Y section shown in FIG. 3 is a plan view of the wheel disc 3. FIG. FIG. 6 is a plan view of an automobile wheel 51 according to a second embodiment. It is MM sectional drawing of FIG. 5 of the automotive wheel 51 same as the above. (A) The enlarged view of the Z section shown in FIG. 6, (B) The enlarged view of the V section shown in FIG. 6 is a longitudinal sectional view of an automotive wheel 61 according to Embodiment 3. FIG. FIG. 9A is an enlarged view of a W portion shown in FIG. 8 and FIG. 9B is an enlarged view of U shown in FIG. In another example of an automobile wheel 81, (A) an enlarged vertical sectional view showing a fitting state between the front side rim flange part 86 and the fitting outer peripheral part 24, and (B) a front side rim flange part 86 and a drainage recess 25 It is an expanded longitudinal cross-sectional view which shows a relationship.

Explanation of symbols

1, 51, 61, 81 Automobile wheel 2, 62, 82 Wheel rim 3, 53 Wheel disc 11, 66, 86 Front side rim flange part 12 Back side rim flange part 13 Front side bead seat part 13a (of the front side rim flange part 13) Inner peripheral surface 14 Back side bead sheet portion 17, 18, 71 Rising peripheral portion 19, 20, 69, 87 Curved peripheral portion 19a Peripheral end portion 24, 54 Fitting outer peripheral portion 25, 55 Drain recess 25a (of drain recess 25 ) Inner end of recess 30 Welded part 57 Raised part

Claims (4)

In an automobile wheel formed by fitting and welding a wheel rim to which a tire is mounted and a wheel disk to which an axle is connected,
The wheel rim is provided with a front rim flange portion including a rising peripheral portion standing outward from a front bead seat portion supporting a front bead of the tire, and a curved peripheral portion curved from the rising peripheral portion to the front side. ,
A wheel disc is provided on the outer peripheral edge of the front outer rim flange portion, and is fitted on the curved peripheral portion of the front side rim flange portion and seated on the front side surface of the rising peripheral portion; A plurality of drain recesses disposed at predetermined intervals in the circumferential direction, extending from the inner peripheral surface of the bead seat portion to the inside;
The fitting outer periphery of the wheel disc is fitted to the front rim flange portion of the wheel rim and is integrated with the wheel rim by welding from the back side of the wheel disc ,
In addition, the wheel rim
A rear rim flange portion comprising a rising peripheral portion standing outward from a back side bead seat portion supporting a back bead of the tire, and a curved peripheral portion curved from the rising peripheral portion to the back side;
An automotive wheel characterized in that the front rim flange portion is formed such that the thickness of the curved peripheral portion is thinner than the curved peripheral portion of the back rim flange portion . A curved peripheral portion constituting the front rim flange portion of the wheel rim is formed by bending the peripheral end portion inward, and the fitting outer peripheral portion of the wheel disk is connected to the peripheral end portion of the curved peripheral portion. It is designed to fit into the curved peripheral part between the rising peripheral part,
The drain recess of the wheel disc is formed so that the inner end of the recess is positioned inward from the outer end edge of the welded portion where the fitting outer periphery of the wheel disc and the wheel rim are welded. The automobile wheel according to claim 1. In an automobile wheel formed by fitting and welding a wheel rim to which a tire is mounted and a wheel disk to which an axle is connected,
The wheel rim is provided with a front rim flange portion including a rising peripheral portion standing outward from a front bead seat portion supporting a front bead of the tire, and a curved peripheral portion curved from the rising peripheral portion to the front side. ,
A wheel disc is provided on the outer peripheral edge of the front outer rim flange portion, fitted into the curved peripheral portion and seated on the front side of the rising peripheral portion, and the outer peripheral edge of the fitted outer peripheral portion. It comprises a raised portion that protrudes outward from the inner peripheral surface of the front bead sheet portion, and a water drain recess provided outside the raised portion,
The fitting outer periphery of the wheel disc is fitted to the front rim flange portion of the wheel rim, and is welded from the back side of the wheel disc so as not to weld the raised portion, and is integrated with the wheel rim. An automotive wheel characterized by this. The curved peripheral part constituting the front rim flange part of the wheel rim is formed by bending the peripheral end part inward,
The fitting outer periphery of the wheel disk is configured to be fitted into the curved peripheral portion between the peripheral end portion and the rising peripheral portion of the curved peripheral portion. Automotive wheels.

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