JP4784853B2 - Spare tire peripheral structure - Google Patents

Description

  The present invention relates to a spare tire to be mounted on a back door of an automobile and a peripheral structure of the spare tire.

  There is an automobile back door provided with a mounting portion for a spare tire (hereinafter, used without being distinguished from a spare tire and a normal tire), and the tire is mounted there. Various additives such as N-phenyl-N ′-(1.3 dimethylbutyl) -P-phenylenediamine are added to the tire components in order to improve durability. For this reason, when rainwater or the like falls on the tire, there is a problem that the raindrop in which the additive is dissolved flows out from the tire and drops onto the upper surface of the bumper, and the bumper is stained in dark yellow.

  As a countermeasure, there is a method of attaching a protective film to the central part or the entire surface of the bumper. However, the cost is high, and it is difficult to apply the protective film to a bumper-shaped curved surface or an angular part. There is also a method of coloring in dark yellow or applying black or plating so that the bumper is not noticeable even if it is colored, but masking work is required to paint differently, and workability is low and cost is high. Become.

Depending on the vehicle model, there is a cover that covers the tire. Conventionally, when a tire under cover is provided, the tire under cover is removed simultaneously with the tire when the spare tire is removed, and the tire and tire under cover are attached when the spare tire is installed. It was assembled and set on the mounting part while holding it together, and it was fastened together with the mounting part of the tire with bolts or nuts.
JP 2001-30965 A

However, if you work with both the tire and the tire undercover at the same time, it may be difficult to fit the mounting position, or the tire and the undercover may be misaligned. there were. If a tire undercover is attached to a heavy tire, the weight further increases and the operation becomes difficult. The larger and heavier the tire, the larger and heavier the cover, and the more difficult it will be to work. When setting tires of different sizes including the wheel cover, the specifications of the cover were different, and it was necessary to set different specifications for the brackets for each type.
In addition, when the supporting force of such a tire undercover is weak, the tire undercover may flutter. Since the outer panel of the vehicle body is disposed around the under cover, there is no place to support the tire under cover appropriately.

  The present invention has been made in view of such circumstances, and easily attaches the tire to the tire attachment portion, eliminates the flutter of the tire undercover attached to the tire, improves workability in attaching the wheel cover, The object is to provide a peripheral structure of a spare tire that can reduce the number of parts and improve the appearance quality.

In order to solve the above problems, the present invention provides a bracket having a mounting seat fixed to a vehicle body panel and protruding with stud bolts for mounting a spare tire, a tire cover covering at least a lower portion of the spare tire , in the peripheral part structure of the spare tire of a vehicle including the tire cover, while having a metallic base to be polymerized to the mounting seat while inserting the stud bolt, said mounting seat of the bracket, the In addition to the stud bolt, a fixing means for fixing the base portion of the tire cover is provided in a state where the spare tire is not attached, and when the spare tire is attached, fixing by the fixing means is provided. And the stud bolt for fastening and fixing the wheel of the spare tire to the mounting seat of the bracket; The fastening force of Tsu bets, the base of the tire cover, is to be fastened and fixed to the mounting seat of the bracket.

Since the peripheral structure of the spare tire of the present invention is configured as described above, when the tire is mounted on the mounting portion of the spare tire when replacing the tire, the tire and the tire cover are not held at the same time, and only the tire is held. Can be fixed in place.
Further, in the aspect in which the rib that comes into contact with the spare tire is provided on the inner surface of the resin cover portion of the tire cover, there is no gap between the tire undercover and the spare tire, and the spare tire is formed with the rib. It can be reliably supported, and flapping of the tire undercover can be prevented. Furthermore, the the inner surface of the resin cover portion of the tire cover, a different rib shapes formed of two or more, so that the ribs of one of the same type with respect to two or more tires of different sizes are abutted by words, one can support two or more spare tire having a different size tire under cover rib, it reduces the cost of manufacturing tires under cover.
Further, in the present invention, the further comprises a wheel cover for covering the wheel portion of the spare tire, the wheel cover is attached to the base of the tire cover, positioning means of the wheel cover is formed in the base portion of the tire cover In this aspect, it is possible to prevent erroneous mounting and rotation of the wheel cover.

Hereinafter, a peripheral structure of a spare tire according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is an exploded perspective view of a back door of an automobile adopting a peripheral structure of a spare tire according to the present invention.
A carrier 3 as a tire mounting bracket for mounting the spare tire 2 is attached to the outer panel 4 on the back door 1. The spare tire 2 is disposed on the carrier 3 via a tire under cover 5. A wheel cover 8 is attached to the wheel 7 of the tire 2, and the wheel cover 8 is fixed to the tire under cover 5.

As shown in FIG. 2, the carrier 3 is integrally formed, and is provided with a leg portion 9 that branches in four directions as an attachment portion to the outer panel 4 on one end side. A reinforcing panel (not shown) for reinforcing attachment of the carrier 3 is provided on the door inner side of the outer panel 4. A mounting seat 10 is provided on the other end side of the leg portion 9 and protrudes toward the rear side of the vehicle body connected to the leg portion 9. The mounting seat 10 further includes a stud bolt 11 whose front end portion protrudes rearward. Installed. The mounting seat 10 is formed with two screw holes 12 formed on the left and right sides of the welding nut for mounting the tire undercover 5.
In the present embodiment, the tire (wheel) 2 is fixed to the axle with five fastening holes, and two stud bolts 11 protruding from the carrier 3 are provided on the upper side and one on the lower side. ing. The screw hole 12 is formed at a position corresponding to the fastening hole of the wheel not related to the stud bolt 11, and consideration is given so that the head of the mounting screw of the tire under cover 5 does not interfere with the mounting of the spare tire. By doing so, it is possible to set to attach the tire undercover 5 to the mounting seat 10. The tire 2 and the tire under cover 5 are assembled in the stud bolt 11, and these are fastened together with the stud bolt 11, so that the tire 2 is mounted on the carrier 3. In addition, since the base 13 which is the joint fastening portion of the tire undercover 5 is made of metal, it can be fastened against the fastening force of the bolt and nut.

FIG. 3 shows the tire under cover 5, and the tire under cover 5 is provided with a metal base portion 13 made of sheet metal and a cover portion 17 made of resin. That is, the tire under cover 5 covers the lower part of the tire 2 and is substantially fan-shaped when viewed from the front, and a flat base 13 is formed in a main part thereof. Three bolt insertion holes 14 of the stud bolt 11 are formed in the base portion 13, and screw insertion holes 15 are formed at positions corresponding to the screw holes 12 of the mounting seat 10. A stud bolt (center bolt) 16 to which a later-described wheel cover 8 is attached is fixed to a portion of the base portion 13 corresponding to the center position of the tire 2 toward the rear (outside) side of the vehicle body.
The reason why the stud bolt (center bolt) 16 is provided in the base is to cope with the difference in specifications. That is, the stud bolt (center bolt) 16 is a component necessary for mounting the wheel cover 8 and is an unnecessary component for the specification that does not use the tire under cover 5 and the full cover type tire cover. 8 and the tire under cover 5 are provided in the tire under cover 5 used simultaneously.
As shown in FIG. 4, a pair of locking holes 27 for the wheel cover 8 are formed in the base portion 13 of the tire undercover 5. The locking holes 27 are positioned substantially vertically and have a substantially rectangular shape with long sides arranged in the lateral direction. The tire undercover 5 is fastened to the mounting seat 10 of the carrier 3 by a screw and a screw hole 12 (not shown) with the stud bolt 11 inserted in the bolt insertion hole 14. As shown in FIG. 5, the tire undercover 5 is attached with a rivet 18 at the overlapping portion between the edges of the base portion 13 and the cover portion 17.

  As shown in FIG. 3, on the inner surface side of the cover portion 17, ribs 19 and 20 projecting toward the tire 2 side (rear side) are radially formed integrally at a plurality of locations, and the inner and outer sides are defined with reference to the center portion of the tire. The inner rib 19 and the outer rib 20 are formed in the inner wall. As shown in FIG. 6, the inner rib 19 is formed so as to abut on the peripheral end of the wheel 7b having the size of the large tire 2b, and the outer rib 20 is formed on the peripheral surface of the small size of the tire 2a and the large size tire 2b. It forms so that it may contact | abut.

As shown in FIG. 7, an attachment portion 29 of the spacer 30 is formed on the outer peripheral side of the surface of the wheel cover 8 on the tire 2 side. The spacer 30 can be fixed to the attachment portion 29 with double-sided tape. As shown in FIG. 9, the spacer 30 contacts the wheel 7 outside the spacer 30 (in the radial direction of the tire) when the large tire 2b is mounted, and when the small tire 2a is mounted. The wheel 7 is brought into contact with the inside of the spacer 30 (inner side in the radial direction of the tire).
A bead 21 protruding outward is formed in a portion of the cover portion 17 located on the running surface of the tire 2, and a drain hole 22 is formed in the lowermost portion of the bead 21 in the vehicle mounted state. As shown in FIG. 6, the drain hole 22 is formed at a position behind the rear end of the bumper 23 so that water does not drip on the bumper 23 side.

  In the present embodiment, a wheel cover 8 that covers the wheel and protects the wheel is further provided. As shown in FIG. 7, the circular wheel cover 8 has a columnar boss portion 25 that protrudes toward the vehicle body at the center, and a pair of protrusions 26 are formed at the top and bottom of the boss portion 25. ing. As shown in FIG. 10, the protrusion 26 forms a straight portion 26a having the same cross-sectional shape on the proximal end side and an inclined portion 26b that becomes narrower toward the distal end side. The inclined portion 26b is inclined so as to become thinner in the width direction of the rectangular hole 27 shown in the locking hole 27 shown in FIG. The protrusions 26 are inserted into a pair of locking holes 27 formed in the tire undercover 5 so that the wheel cover 8 is positioned and stopped. A tapered throttle part 28 is formed inside the boss part 25, and the throttle part 28 is inserted into the center bolt 16 of the tire undercover 5. As shown in FIG. Attached to the tire under cover 5. The center bolt 16 is erected from the base 13 to the rear side of the vehicle body.

Hereinafter, the operation and effect of the present embodiment will be described.
In the peripheral structure of the spare tire, when the tire 2 is not attached, the tire under cover 5 is fixed to the screw hole 12 formed in the carrier 3 with a screw through the screw insertion hole 15. Therefore, the tire undercover 5 remains attached to the carrier 3 regardless of whether the tire 2 is attached or the tire 2 is removed. Therefore, when the tire 2 is mounted, the tire undercover 5 and the tire 2 can be held at the same time, and there is no need to attach them to the carrier 3, and only the tire 2 can be held and the tire 2 can be attached to the carrier 3. Therefore, the tire 2 can be easily attached to the carrier 3 even in the assembly line of the vehicle body or at the time of tire replacement by a passenger after the vehicle is sold.

  Since the tire under cover 5 is divided into the base part 13 of the sheet metal part and the cover part 17 which is a resin molded product, when the cover part 17 is unnecessary, the cover part 17 is removed and only the base part 13 is left. It can be used as a mounting bracket for the mounting portion and the wheel cover 8. Moreover, the position of the attachment part in the cover part 17 of the base 13 can be unified, and only the cover part 17 can be changed to cope with the difference in the outer diameter size of the tire 2. Furthermore, by changing the base portion 13, the height of the mounting surface of the wheel cover 8 can be changed, and it is possible to cope with changing the rim width of the tire 2 or the wheel cover. It is also possible to change the design surface of the wheel cover.

  Instead of using the screw insertion hole 15 for attaching the tire undercover 5 covering the lower part of the tire 2 and the screw hole 12 of the carrier 3, a full cover type covering the entire tire 2 can be used in the same manner. Moreover, although the screw hole 12 and the screw insertion hole 15 are attached with screws, they may be temporarily fixed like a clip. This is because the tire undercover 5 can be finally tightened using the stud bolt 11 of the carrier 3 when the tire 2 is mounted later. Furthermore, a folded portion or a hook portion may be formed on the base portion 13 of the tire under cover 5 so that the tire under cover 5 is hooked on the carrier 3.

FIG. 11 is a modification of the tire undercover 5.
The tire undercover 5 and the carrier 3 shown in FIGS. 2 and 3 are attached to the carrier 3 in a state where the carrier 3 is attached to the back door 1. Therefore, the attachment procedure is two steps. Therefore, if the tire undercover 5 and the carrier 3 are assembled in advance on the back door 1, they can be attached in one step in the line. Regarding the assembly method, the tire undercover 5 may be removable from the carrier 3 or may not be removable. However, since the tire under cover 5 and the carrier 3 are simultaneously attached to the back door 1, the screw attachment holes 9a of the lower leg portion 9 are hidden by the cover. Therefore, the service hole 17a may be formed at a corresponding position, and the leg portion 9 may be fastened with the bolt 33 via the service hole 17a.
Thus, workability can be improved by pre-assembling.

  In FIG. 12, the base 13 is omitted from the tire undercover 5. A hole 34 is formed in a side portion of the carrier 3, and a hole is formed in the tire undercover 5 at a position corresponding to the hole 34. Thus, the tire under cover 5 can be temporarily fixed to the side surface of the carrier 3 with the clip 36 or the like. And the hole 35 is formed in the position corresponding to the hole 9a of the leg part 9, and the tire undercover 5 is attached to a leg part with a screw | thread. As described above, by omitting the base portion 13, the tire undercover 5 can be downsized and the working time can be shortened.

The tire 2 is fixed to the carrier 3 by the wheel nut 31 by inserting the wheel mounting holes 24 of the tire 2 into the three stud bolts 11 with the tire undercover 5 fixed to the carrier 3. As shown by the solid line in FIG. 6, the tire 2 having a large size is attached to the carrier 3, and the outer periphery of the tire 2 is in contact with the ribs 20 and 32 and the edge of the tire undercover 5. Therefore, the cover part 17 does not flutter.
If the position accuracy of the tire undercover 5 and the tire 2 is poor, the rib 20 on the back side of the tire 2 and the rib 32 on the running surface side deviate from the setting with the tire 2, and the appearance deteriorates, and the cover portion 17 is not stable. Arise. However, the stud bolt 11 of the carrier 3 serves as a mounting reference for the tire 2 and the tire under cover 5, and the relative position of each member including the wheel cover 8 described below can be given.

When the wheel cover 8 is mounted while the tire 2 is mounted on the carrier 3, the locking hole 27 of the base 13 of the tire undercover 5 cannot be visually observed. When the wheel cover 8 is assembled, the protrusion 26 enters the locking hole 27 by appropriately rotating the wheel cover 8 so that the center bolt 16 is aligned with the center hole 25a of the center of the wheel cover 8, and Can be installed in the normal position.
Since the projection 26 has an inclined portion 26b at the tip, it is easy to be inserted into the locking hole 27. After entering the locking hole 27, the straight portion 26a is substantially the same size as the locking hole 27 and has the same cross section. Because of the shape, the position of the wheel cover 8 is determined. Further, as shown in FIG. 10, the wheel nut 31 cannot be screwed to the center bolt 16 unless the height of the protrusion H is a certain size, that is, the protrusion 26 does not enter the locking hole 27. .

When it is desired to position the wheel cover 8 in the vertical direction, as shown in FIG. 13A, the protrusion shape is a heterogeneous shape of the protrusion 26c having a square cross section and the protrusion 26c having a circular cross section, as shown in FIG. 13B. As described above, the shape of the locking holes of the base portion 13 may be made corresponding to the rectangular locking holes 27 and the circular locking holes 27a. Thus, erroneous mounting of the wheel cover 8 in the vertical direction can be prevented.
As shown in FIG. 7, after the wheel cover 8 is mounted, when the tire 2 size is large, the spacers 30 provided on the inner peripheral surface of the wheel cover 8 abut against the tire 2, and as indicated by imaginary lines as well. Further, since the tire 2 is in contact with a small size, it is possible to prevent the wheel cover 8 from rattling. That is, one spacer 30 can be used for two types of tires 2. Note that the same effect can be obtained by forming a rib on the back surface of the wheel cover 8 instead of the spacer 30.

The embodiment of the present invention has been described above. Of course, the present invention is not limited to this, and various modifications and changes can be made based on the technical idea of the present invention.
For example, like the ribs 32 shown by phantom lines in FIG. 6, ribs 32 that contact only the large tire 2a are formed on the inner surface of the tire undercover 5, or ribs that contact only the small tire 2b. Two or more types of ribs may be formed at the same time, and two or more types of tires having different sizes may be supported by any of the same type of ribs.

1 is an exploded perspective view of a tire peripheral part mounted on a back door of an automobile adopting a peripheral structure of a spare tire according to an embodiment of the present invention. It is an expansion perspective view of the carrier attached to the back door of FIG. It is a perspective view of the tire undercover attached to the carrier of FIG. FIG. 4 is an enlarged perspective view of a base portion of the tire undercover and a center portion (center bolt is omitted) of FIG. 3. It is sectional drawing which shows the attachment state of the under cover and wheel cover with respect to the carrier of FIG. It is sectional drawing which shows the attachment state of the tire undercover and tire of FIG. It is the perspective view which looked at the wheel cover of FIG. 1 from the back surface side. It is an expanded sectional view of the boss | hub part of the wheel cover of FIG. It is sectional drawing which shows the attachment state of the wheel cover and tire of FIG. It is an expansion perspective view of the boss | hub part of the wheel cover of FIG. It is a perspective view of the modification of the tire undercover of this invention. It is a perspective view of the other modification in the tire undercover of the present invention. FIG. 3A is an enlarged perspective view of a protrusion at a boss portion of the wheel cover of the present invention, and FIG. 2B is an enlarged perspective view of a hole portion of a tire undercover that serves as a receiving portion for the protrusion.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Back door 2 Tire 3 Carrier 4 Outer panel 5 Tire under cover 8 Wheel cover 10 Mounting seat (carrier)
11 Stud bolt (carrier)
12 Screw hole (carrier)
13 Base (tire under cover)
14 Bolt insertion hole (base)
15 Screw insertion hole (base)
16 Stud bolt (base)
17 Cover part (tire under cover)
18 Rivet 19 Inner rib 20 Outer rib 21 Bead 22 Drain hole 24 Wheel mounting hole 25 Boss part 26 Protrusion (wheel cover)
27 Locking hole (tire under cover)
31 Wheel nut 32 Rib

Claims (5)

In a peripheral structure of a spare tire of a vehicle, including a bracket having a mounting seat fixed to a vehicle body panel and protruding with a stud bolt for mounting a spare tire, and a tire cover covering at least a lower portion of the spare tire,
The tire cover includes a metal base that is superposed on the mounting seat in a state where the stud bolt is inserted, while the spare tire is mounted on the mounting seat of the bracket separately from the stud bolt. in the absence, the fixing means for fixing the base of the tire cover and is disposed, in a state mounted the spare tire, with fixing by said fixing means, said wheel of said spare tire of said bracket The peripheral structure of a spare tire, wherein the base portion of the tire cover is fastened and fixed together with the mounting seat of the bracket by the fastening force of the stud bolt and nut fastened to the mounting seat . The peripheral structure of the spare tire according to claim 1 , wherein a rib that abuts on the spare tire is provided on an inner surface of a resin cover portion of the tire cover. The inner surface of the resin cover portion of the tire cover, a different rib shapes formed of two or more, and characterized in that the ribs of one of the same kind are abutted against the two or more tires of different sizes The peripheral part structure of the spare tire according to claim 1 or 2. And wherein further comprising a wheel cover for covering the wheel portion of the spare tire, the wheel cover is attached to the base of the tire cover, positioning means of the wheel cover to the base of the tire cover is formed The peripheral part structure of the spare tire according to any one of claims 1 to 3. Periphery structure of the spare tire according to any one of claims 1 to 4, characterized in that said tire cover is a full-cover type that covers the entirety of the spare tire.

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