JP3417138B2 - Support device for vehicle spare tire - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for supporting a vehicle spare tire. 2. Description of the Related Art A support device for a vehicle spare tire generally includes a carrier provided on the back of the vehicle, and a plurality of carrier bolts provided on a mounting plate portion of the carrier and projecting rearward. With each of these carrier bolts inserted into a mounting hole provided in the wheel of the spare tire, a hub nut is screwed onto the tip of each of the carrier bolts, so that the carrier bolts are fixedly mounted on the carrier. . [0003] In order to mount a spare tire on a carrier using the supporting device having such a configuration, all the mounting holes of the wheel of the spare tire are inserted into each carrier bolt on the carrier side while the spare tire is lifted. At the same time, it is necessary to simultaneously insert each carrier bolt into each mounting hole in this state. In this case, since the spare tire is very heavy, the work of positioning the spare tire on each carrier bolt and the work of mounting the spare tire on each carrier bolt require a great deal of labor and time. The tire wheel may be damaged by the tip of the carrier bolt. Japanese Utility Model Laid-Open No. 2-120294 proposes a support device for a spare tire that should address these problems. [0004] The support device for a spare tire includes a hanger member rotatably mounted on a mounting plate portion of the carrier and penetrating through a through hole provided in the mounting plate portion so as to advance and retreat.
When mounting the spare tire on the mounting plate of the carrier, the spare tire is supported on the hanger member with the hanger member inserted through the hub hole provided in the center of the wheel of the spare tire. Have been. [0005] In the support device for the spare tire,
When mounting the spare tire on the carrier, first support the spare tire on the hanger member, and then rotate the spare tire in the circumferential direction on the hanger member and position each mounting hole with respect to each carrier bolt on the mounting plate side. Then, after the positioning, a means is employed in which the spare tire is slid on the hanger member to insert each carrier bolt into each mounting hole. Thereby, at the time of positioning the spare tire with respect to each carrier bolt and at the time of attaching the spare tire to each carrier bolt, the heavy labor of lifting the spare tire and maintaining the lifted state of the spare tire during these operations is released. Things. As described above, in the spare tire supporting apparatus, the spare tire is positioned with respect to each carrier bolt on the mounting plate side of the carrier, and then the spare tire is hanger-mounted. Means of sliding each carrier bolt through each mounting hole by sliding on the member is adopted,
Since the wheel thickness of a spare tire is not very large, the sliding contact surface between the inner peripheral surface of the hub hole of the wheel and the upper surface of the hanger member is small, and the heavy weight of the spare tire acts on the sliding contact surface. Therefore, it is difficult to smoothly slide the spare tire on the hanger member, and when the spare tire is slid on the hanger member, there is a problem that the sliding contact surface between them is damaged. Therefore, an object of the present invention is to eliminate these disadvantages. SUMMARY OF THE INVENTION The present invention comprises a carrier provided on the back of a vehicle, and a plurality of carrier bolts provided on a mounting plate of the carrier and projecting rearward. The spare tire is fastened and fixed to the carrier by screwing a hub nut to the tip of each of the carrier bolts in a state where the bolts are inserted through the mounting holes provided in the wheel of the spare tire. In the support device for a vehicle spare tire, a through hole is provided in an intermediate portion of a mounting plate portion of the carrier for each carrier bolt, and the spare tire is provided in the through hole in the center of the wheel of the spare tire. A support member that is supported in a state of being inserted into the hub hole that is inserted into the hub hole so as to be movable for a predetermined length in the front-rear direction, and a mounting plate for the carrier. A rail member on which the support member is slidably fitted is provided so as to protrude forward, and when the spare tire is mounted on the carrier, the spare tire is rotatable in a circumferential direction on the support member. The rail member is configured to be supported movably in the front-rear direction on the rail member integrally with the support member. In the spare tire supporting device constructed as described above, when the spare tire is mounted on the mounting plate portion of the carrier, the spare tire is mounted on the through hole of the mounting plate portion and fitted to the rail member. The spare tire is once supported on the support member. Then, while rotating the spare tire in the circumferential direction on the support member, each mounting hole of the spare tire is positioned so as to face each carrier bolt on the mounting plate portion side, and the support member supporting the spare tire is replaced with the spare member. Slide each carrier bolt through each mounting hole by sliding forward on the rail member with the tire, and finally screw a hub nut onto the tip of each carrier bolt and advance it to tighten the wheel of the spare tire By fixing to the mounting plate, the spare tire is mounted on the carrier. In the spare tire supporting device, the spare tire once supported on the support member is positioned with respect to each carrier bolt, and then when the carrier bolt is inserted into each mounting hole. Since the support member supporting the spare tire is slid on the rail member together with the spare tire without being slid on the support member, the inner peripheral surface of the hub hole of the spare tire slides on the support member. No damage is caused by contact. Further, since the supporting member and the rail member have a predetermined length and their sliding contact surfaces are considerably large, the load per unit area from the spare tire on the sliding contact surfaces of both is not so large, The sliding of the member on the rail member is performed smoothly, and damage to the sliding contact surface between them is also prevented. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a rear portion of a vehicle equipped with a spare tire supporting device according to an embodiment of the present invention; The entire rear of the vehicle body 10 of the vehicle is open, and the opening is formed by an upper door 11 having an upper edge rotatably assembled at an upper edge thereof and a lower edge at a lower edge thereof. Lower door 12 rotatably mounted
And is opened and closed by The spare tire support device is rotatably supported in the front-rear direction at the right edge of the opening at the rear of the vehicle body 10,
The back supports the spare tire. As shown in FIGS. 1 to 5, the support device for a spare tire includes a carrier 20a, a rail member 20b, a support member 20c, and a lock mechanism 20d.
The carrier 20a includes a carrier body 21 and a mounting member 22.
It is composed of The mounting member 22 has a trapezoidal shape, is fixed to the back of the carrier body 21, and projects rearward by a predetermined amount to support a spare tire. The rail member 20b and the support member 20c are assembled to the mounting member 22. The carrier 20a has a frame shape, and is supported at the right and left ends of the rear opening of the vehicle body 10 at the upper and lower right ends thereof so as to be rotatable in the front-rear direction. The lock mechanism 20d is mounted below the front side of the mounting member 22 in the carrier main body 21.
A built-in hook (not shown) is engaged with a striker 13 protruding from the rear surface of the lower door 12, and the hook is rotated by an extension operation of the operation wire 20 e to cause the striker 1 to rotate.
3 is released.
Therefore, the carrier 20a is releasably fixed to the lower door 13 via the lock mechanism 20d. As shown in FIGS. 2 to 5, three carrier bolts 22b, 22c and 22d are provided on the mounting plate 22a of the mounting member 22 constituting the carrier 20a. Each of the carrier bolts 22b to 22d protrudes rearward by a predetermined length in a state where the carrier bolts 22b to 22d are arranged at the respective tops of the inverted triangle. The mounting plate portion 22a has a rectangular through hole 22 between the upper carrier bolts 22b and 22c.
e is provided. As shown in FIGS. 4 and 5, the rail member 20b is fixed to the back surface of the mounting plate 22a of the mounting member 22 constituting the carrier 20a. It has a rail 23b extending a predetermined length forward. The rail portion 23b has an arc-shaped smooth surface on the top surface of the head. The rail member 20b is attached to the mounting member 22 by the mounting flange portion 23a.
Three bolts 24a, 2 on the back side of the mounting plate portion 22a.
4b, 24c and three nuts 25a, 25b, 25c are tightened and fixed, and the end face of the rail portion 23b is located facing the through hole 22e. Such rail part 2
3b projects upward from below the through hole 22e,
When the mounting plate 22a is viewed from the front, a gap having a predetermined width is formed between the inner peripheral edge of the through hole 22e and the outer peripheral edge of the rail 23b. Also, the mounting plate portion 22 of the mounting member 22
A holding piece 22f is fixed above the through hole 22e on the rear side surface of "a", and the lower end thereof slightly faces the upper part of the through hole 22e. The support member 20c is formed in a shape to be fitted into the head of the rail portion 23b of the rail member 20b, and has a substantially U-shaped support portion 26a having a predetermined length and a cross section opening downward. And left and right inward flange portions 26b extending from the edge of the lower opening, and the front and rear inward flange portions 26b are provided.
The space is formed in a recess 26c that protrudes upward. The inner peripheral surface of the support portion 26a is the rail portion 23b of the rail member 20b.
The support member 20c is formed in an arcuate surface abutting the outer peripheral surface of the head of the carrier 20a, and the support member 20c is passed through a through hole 22e provided in the mounting plate portion 22a of the mounting member 22 of the carrier 20a. It is fitted to the portion 23b. When the support member 20c is fitted to the head of the rail portion 23b of the rail member 20b, it is slidably held in the longitudinal direction of the rail portion 23b. In the support member 20c, the support portion 26a
A cushion member 26c is adhered to the upper surface side of the rear end portion, and is fitted to the head of the rail portion 23b of the rail member 20b in a state penetrating through the through hole 22e of the mounting plate portion 22a. The lower end of the holding piece 22f is resiliently contacted. In the support member 20c, the rail member 2
0b, the lower edge of the through hole 22e is located between the recesses 26c in the lower central portion of the support portion 26a, and the support member 20c is equivalent to the front and rear length of the recess 26c. The sliding member slides in the front-rear direction on the rail portion 23b of the rail member 20b by an amount, and thereafter, the inward flange portions 26b before and after the support portion 26a contact the lower end edge of the through hole 22e to restrict further sliding. I do. In the spare tire supporting apparatus thus constructed, when the spare tire 14 is mounted on the mounting member 22 of the carrier 20a, the through hole 22 of the mounting plate portion 22a is used.
The support member 20c shown in FIG. 5A fitted to the rail member 20b while penetrating the spare tire 14e is inserted into a hub hole 14b provided in the wheel 14a of the spare tire 14, and the spare tire 14 is It is once supported on the cushion member 26c of the support member 20c. After that, spare tire 14
Is mounted on the wheel 14a of the spare tire 14 while rotating in the circumferential direction on the support member 20c.
As shown in FIG. 5 (b), the support member 20c supporting the spare tire 14 is positioned on the rail member 20b while being positioned so as to face the carrier bolts 22b to 22d on the mounting plate portion 22a side. The carrier bolts 22b to 22d are inserted through the mounting holes 14c by sliding forward. Finally, the hub nut 14d is screwed into the tip of each of the carrier bolts 22b to 22d to move forward, and FIG.
As shown in (1), the wheel 14a of the spare tire 14 is fastened and fixed to the mounting plate 22a. Thereby, the spare tire 14 is mounted on the mounting member 22 of the carrier 20a. In the spare tire supporting apparatus, the spare tire 14 once supported on the support member 20c is positioned with respect to each of the carrier bolts 22b to 22d, and then is inserted into each of the mounting holes 14c.
Since the support member 20c supporting the spare tire 14 is slid on the rail member 20b without being slid on the support member 20c when the b-22d is inserted, the hub of the spare tire 14 The inner peripheral surface of the hole 14b is not damaged. Further, the support member 20c and the rail member 2
0b has a predetermined length, and the sliding surface between them is considerably large. Therefore, the load per unit area from the spare tire 14 on the sliding surface between the two is not so large, and the rail member of the support member 20c is not so large. The sliding on 20b is performed smoothly, and the damage of the sliding contact surface between them is also suppressed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a vehicle equipped with a spare tire support device according to one embodiment of the present invention. FIG. 2 is a perspective view showing a relationship among a carrier mounting member, a supporting member, and a spare tire that constitute the supporting device. FIG. 3 is a perspective view of the mounting member as viewed from the back side. FIG. 4 is a perspective view illustrating a mounting member, a rail member, and a support member of a carrier constituting the support device. FIG. 5 is a partial vertical sectional side view of a support device for explaining a mounting state of a spare tire. [Description of Signs] 10 ... body, 11, 12 ... door, 14 ... spare tire,
14a: wheel, 14b: hub hole, 14c: mounting hole,
14d: hub nut, 20a: carrier, 21: carrier body, 22: mounting member, 22a: mounting plate portion, 22b,
22c, 22d: Carrier bolt, 22e: Through hole, 2
0b: rail member, 23b: rail portion, 20c: support member, 26a: support portion.

Claims (1)

(57) [Claim 1] A carrier provided on the back of a vehicle, and a plurality of carrier bolts provided on a mounting plate portion of the carrier and protruding rearward are provided. For a vehicle configured such that the spare tire is fastened and fixed to the carrier by screwing a hub nut to a tip end of each of the carrier bolts in a state of being inserted into a mounting hole provided in a wheel of the spare tire. In the spare tire support device, a hub having a through-hole provided in an intermediate portion of a mounting plate portion of the carrier at a position where each carrier bolt is provided, and the spare tire provided in the through-hole at the center of the wheel of the spare tire A support member for supporting the support member inserted in the hole so as to be movable in the front-rear direction for a predetermined length, and the support member is mounted on a mounting plate portion of the carrier. The rail member slidably fitted protrudes toward the front,
When mounting the spare tire on the carrier, the spare tire is rotatable in the circumferential direction on the support member, and is supported integrally with the support member so as to be movable in the front-rear direction on the rail member. A support device for a vehicle spare tire, wherein the device is configured.