JP2005081956A - Spare tire holding structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To regulate the movement of a spare tire to the inside of a cabin at a rear-end collision. <P>SOLUTION: This spare tire holding structure comprises a tire carrier 14 for holding the spare tire, a tire carrier reinforcement 24 which is arranged on the back door 12 of a vehicle body and mounts the tire carrier, and a lower back panel 30 as a body-side frame forming the periphery of a back door opening 29 formed in the rear part of the vehicle body. An extension part 24D extending to an overlapping position with the body-side frame in the longitudinal direction of the vehicle body is disposed in at least one of the tire carrier 14 and the tire carrier reinforcement 24. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a spare tire holding structure, and more particularly to a spare tire holding structure for holding a spare tire on a back door of a vehicle body such as an automobile.

2. Description of the Related Art Conventionally, in a spare tire holding structure for a vehicle body such as an automobile, a body for supporting a spare tire is attached to the front portion of the frame of the vehicle body, and the body frame is coupled to the front plate and the dash panel of the vehicle body. A configuration is known in which a spare tire bracket is installed on a front member as a part and a support, and the spare tire is detachably supported by the spare tire bracket (see, for example, Patent Document 1).
JP-A-8-198138

  However, unlike the case of Patent Document 1, in the case of a so-called shoulder-type spare tire holding structure in which the spare tire is held on the back door of the vehicle body, the outer peripheral portion of the spare tire does not protrude from the outer peripheral portion of the back door. Therefore, there is no frame component that forms the periphery of the back door opening on the body side at a portion that overlaps the spare tire, in particular, the wheel of the spare tire in the longitudinal direction of the vehicle body (a position overlapping when viewed from the rear of the vehicle body). As a result, when another vehicle or the like collides with the spare tire (collision from behind), the amount of movement of the spare tire toward the vehicle interior side increases.

  In view of the above fact, an object of the present invention is to provide a spare tire holding structure capable of suppressing the movement of the spare tire to the vehicle interior side at the time of rear-end collision.

The spare tire holding structure of the present invention according to claim 1 includes a tire carrier for holding a spare tire,
A tire carrier reinforcement disposed on the back door of the vehicle body and attaching the tire carrier;
A body side skeleton that forms the periphery of the back door opening formed at the rear of the vehicle body;
And at least one of the tire carrier and the tire carrier reinforcement is provided with an extending portion extending to a position overlapping with the body side skeleton portion in the vehicle body longitudinal direction.

  Accordingly, at least one of a tire carrier that holds the spare tire and a tire carrier reinforcement that is disposed on the back door of the vehicle body and attaches the tire carrier constitutes the periphery of the back door opening formed at the rear of the vehicle body. It extends to a position that overlaps with the body side skeleton in the longitudinal direction of the vehicle body. For this reason, when another vehicle or the like collides with a spare tire, at least one of the extension part of the tire carrier and the tire carrier reinforcement is a body side skeleton part side that constitutes the periphery of the back door opening part. It interferes and suppresses the movement of the tire carrier to the vehicle interior side. As a result, it is possible to suppress the movement of the spare tire toward the vehicle interior during the rear-end collision.

  According to a second aspect of the present invention, in the spare tire holding structure according to the first aspect of the present invention, the spare tire holding structure includes an engaging means for engaging the extending portion with the body-side skeleton portion.

  Therefore, in addition to the content described in claim 1, when the extension portion interferes with the body side skeleton portion side that forms the periphery of the back door opening, the extension portion and the body side skeleton portion are provided by the engaging means. And engage. As a result, the movement of the spare tire to the vehicle interior side during the rear-end collision can be reliably suppressed.

  The spare tire holding structure according to the first aspect of the present invention includes a tire carrier that holds a spare tire, a tire carrier reinforcement that is disposed on a back door of the vehicle body and attaches the tire carrier, and a back door opening formed at the rear of the vehicle body A body side skeleton part that forms a periphery of the part, and at least one of the tire carrier and the tire carrier reinforcement extends an extended part that extends to a position overlapping with the body side skeleton part in the longitudinal direction of the vehicle body Since it provided, it has the outstanding effect that the movement to the vehicle interior side of the spare tire at the time of a rear-end collision can be suppressed.

  According to a second aspect of the present invention, in the spare tire holding structure according to the first aspect, since there is an engaging means for engaging the extended portion and the body side skeleton portion, in addition to the effect of the first aspect, Thus, it has an excellent effect that the movement of the spare tire to the vehicle interior side during the rear-end collision can be reliably suppressed.

  A spare tire holding structure according to a first embodiment of the present invention will be described with reference to FIGS.

  In the figure, the arrow FR indicates the vehicle body front direction, the arrow IN indicates the vehicle width inside direction, and the arrow UP indicates the vehicle body upward direction.

  As shown in FIG. 4, a spare tire carrier 14 as a tire carrier is disposed on the back door 12 of the vehicle body 10 in the present embodiment, and a plurality of spare tires 18 are provided on the spare tire carrier 14. Each hub nut 16 and a plurality of through holes formed in the wheel 18 </ b> A of the spare tire 18 can be attached to and detached from the spare tire carrier 14.

  As shown in FIG. 1, the back door 12 includes a back door outer side panel 20 and a back door inner side panel 22, and a back surface (surface on the front side of the vehicle body) 20 </ b> A of the back door outer side panel 20 includes: A tire carrier reinforcement 24 made of a plate material is provided.

  As shown in FIG. 3, the cross-sectional shape of the tire carrier reinforcement 24 viewed from the top and bottom of the vehicle body has two trapezoidal attachments in the vicinity of both end portions 24B of the base 24A along the vehicle width direction and toward the rear side of the vehicle body. It has a concavo-convex shape having a portion 24C and is highly rigid.

  Further, a weld nut 26 is disposed on the vehicle body front side surface of the mounting portion 24C of the tire carrier reinforcement 24. These weld nuts 26 are screwed with nuts 28 through which mounting flanges 14A formed at the four corners of the spare tire carrier 14, the back door outer side panel 20, and the tire carrier reinforcement 24 are inserted. The spare tire carrier 14 is fixed to the tire carrier reinforcement 24 with the back door outer side panel 20 sandwiched between the tire 28 and the weld nut 26.

  As shown in FIG. 1, the tire carrier reinforcement 24 is extended toward the lower side of the vehicle body, and the extended portion 24 </ b> D is a lower back as a body-side skeleton that forms a lower portion around the back door opening 29. The closed cross section 32 formed by the panel 30 and extending in the vehicle width direction has reached a position overlapping in the longitudinal direction of the vehicle body (a position overlapping when viewed from the rear of the vehicle body). A reinforcement 34 is disposed in the closed section 32.

  Therefore, as shown in FIG. 2, when the other vehicle S or the like collides with the spare tire 18, the extended portion 24 </ b> D of the tire carrier reinforcement 24 has a closed cross-sectional portion 32 that forms the periphery of the back door opening 29. And the movement of the tire carrier reinforcement 24 toward the vehicle interior side is prevented.

  In FIG. 1, reference numeral 60 denotes a back door glass, and reference numeral 62 denotes a bumper cover of the rear bumper.

  Next, the operation of this embodiment will be described.

  In the present embodiment, the tire carrier reinforcement 24 is extended toward the lower side of the vehicle body, and the extended portion 24 </ b> D is formed by the lower back panel 30 as a body-side skeleton that forms the lower portion around the back door opening 29. The closed cross-section portion 32 extending in the vehicle width direction and the position overlapping with the vehicle body longitudinal direction are reached.

  As a result, as shown in FIG. 2, when another vehicle S or the like collides with the spare tire 18, the extended portion 24 </ b> D of the tire carrier reinforcement 24 forms a closed cross-sectional portion that forms the periphery of the back door opening 29. 32 and the movement of the tire carrier reinforcement 24 toward the vehicle interior side is prevented. For this reason, the movement of the spare tire carrier 14 fixed to the tire carrier reinforcement 24 and the spare tire 18 attached to the spare tire carrier 14 to the vehicle interior side can be suppressed.

  Further, as shown in FIG. 2, since the hood S of a passenger car is generally located at a position lower than the wheel 18A of the spare tire 18, by extending the extending portion 24D of the tire carrier reinforcement 24 downward, the spare hood S is spared. The movement of the tire 18 toward the vehicle interior side can be effectively suppressed.

  Next, 2nd Embodiment of the spare-tire holding structure of this invention is described according to FIGS.

  In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 5, in this embodiment, the spare tire carrier 14 extends in the lower part of the vehicle body instead of the tire carrier reinforcement 24, and the extending portion 14 </ b> B is provided around the back door opening 29. It has reached a position overlapping with the closed cross-sectional portion 32 extending in the vehicle width direction formed by the lower back panel 30 as the body side skeleton portion constituting the lower portion in the vehicle body longitudinal direction.

  Further, as shown in FIG. 7, a reinforcing rib 14 </ b> C is formed in the vehicle width direction central portion of the extending portion 14 </ b> B of the spare tire carrier 14 along the vehicle body vertical direction.

  Accordingly, as shown in FIG. 6, when another vehicle S or the like collides with the spare tire 18, the extended portion 14 </ b> B of the spare tire carrier 14 moves to the front of the vehicle body (in the direction of arrow A in FIG. 6). By interfering with the closed cross section 32 that forms the periphery of the door opening 29, the spare tire carrier 14 is prevented from moving toward the vehicle interior.

  Next, the operation of this embodiment will be described.

  In this embodiment, the spare tire carrier 14 is extended toward the lower side of the vehicle body, and the extended portion 14 </ b> B is formed by the lower back panel 30 as the body side skeleton portion that forms the lower portion around the back door opening 29. The closed cross-sectional portion 32 extending in the vehicle width direction and a position overlapping in the longitudinal direction of the vehicle body are reached.

  As a result, as shown in FIG. 6, when the other vehicle S or the like collides with the spare tire 18, the extended portion 14 </ b> B of the spare tire carrier 14 forms the closed cross-section portion 32 that forms the periphery of the back door opening 29. The spare tire carrier 14 is prevented from moving toward the passenger compartment. For this reason, the movement to the vehicle interior side of the spare tire 18 attached to the spare tire carrier 14 can be suppressed.

  Further, as shown in FIG. 6, since the hood S of a passenger car is generally located at a position lower than the wheel 18A of the spare tire 18, by extending the extending portion 14B of the spare tire carrier 14 downward, the spare tire The movement to the vehicle interior side of 18 can be suppressed effectively.

  Moreover, in this embodiment, since the extension part 14B was formed in the spare tire carrier 14, the spare tire carrier 14 can be retrofitted to the existing vehicle body.

  Next, a third embodiment of the spare tire holding structure of the present invention will be described with reference to FIGS.

  In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 8, in this embodiment, an engagement protrusion 24E as an engagement means is formed at the lower end portion of the extending portion 24D of the tire carrier reinforcement 24 toward the front of the vehicle body. The portion 22E is inserted into a protrusion 22A formed on the back door inner side panel 22 toward the front of the vehicle body.

  On the other hand, the rear wall portion 40 of the closed cross section 32 facing the engagement protrusion 24E of the tire carrier reinforcement 24 is formed with an engagement recess 40A as an engagement means toward the front of the vehicle body. The engagement protrusion 24 </ b> E of the reinforcement 24 is engaged with the engagement recess 40 </ b> A of the rear wall portion 40 of the closed section 32 via the protrusion 22 </ b> A of the back door inner side panel 22.

  Next, the operation of this embodiment will be described.

  In the present embodiment, as shown in FIG. 9, the other vehicle S or the like collides with the spare tire 18, and the extended portion 24 </ b> D of the tire carrier reinforcement 24 forms the closed cross-sectional portion 32 that forms the periphery of the back door opening 29. The engagement protrusion 24E of the tire carrier reinforcement 24 engages with the engagement recess 40A of the rear wall portion 40 of the closed cross-section portion 32 via the protrusion 22A of the back door inner side panel 22. .

  As a result, the movement of the tire carrier reinforcement 24 toward the vehicle interior side can be reliably prevented. For this reason, the movement to the vehicle interior side of the spare tire carrier 14 fixed to the tire carrier reinforcement 24 and the spare tire 18 attached to the spare tire carrier 14 can be reliably suppressed.

  In place of the engagement protrusion 24E of the tire carrier reinforcement 24, as shown in FIG. 10, the lower portion 22B of the back door inner side panel 22 that overlaps with the extending portion 24D of the tire carrier reinforcement 24 in the longitudinal direction of the vehicle body. In addition, an engaging pin 46 as an engaging means may be provided as a separate part, and the engaging pin 46 may be engaged with the engaging recess 40 </ b> A of the rear wall portion 40 of the closed section 32.

  In addition, as shown in FIG. 11, the engagement protrusion 24 </ b> E of the tire carrier reinforcement 24 has a rear wall portion of the closed cross-section portion 32 through a recess 22 </ b> C formed on the back door inner side panel 22 toward the rear of the vehicle body. It is good also as a structure engaged with the engaging pin 50 as an engaging means of another components arrange | positioned in 40. FIG.

  Although the present invention has been described in detail with reference to specific embodiments, the present invention is not limited to such embodiments, and various other embodiments are possible within the scope of the present invention. It will be apparent to those skilled in the art. For example, in each of the embodiments described above, one of the spare tire carrier 14 and the tire carrier reinforcement 24 is formed by the lower back panel 30 as the body side skeleton part that forms the lower part around the back door opening 29. However, instead of these, the spare tire carrier 14 and the tire carrier reinforcement 24 are both connected to the closed cross-section portion 32 and the vehicle body front-rear direction. It is good also as a structure extended to the position which overlaps in a direction.

  Further, at least one of the spare tire carrier 14 and the tire carrier reinforcement 24 has a back door opening formed by a body side skeleton part that forms the periphery other than the lower part of the back door opening part 29, for example, a door panel upper part or the like. It is good also as a structure extended to the position which overlaps with the closed cross-section part of the upper part of a part, or the closed cross-section part of the both sides of a back door opening part in a vehicle body front-back direction.

It is a sectional side view which shows the spare tire holding structure in 1st Embodiment of this invention. It is operation | movement explanatory drawing which shows the spare-tire holding structure in 1st Embodiment of this invention. FIG. 3 is an enlarged cross-sectional view taken along line 3-3 in FIG. 1. It is the perspective view seen from the vehicle body diagonally back which shows the vehicle body rear part to which the spare tire holding structure in 1st Embodiment of this invention was applied. It is a sectional side view which shows the spare tire holding structure in 2nd Embodiment of this invention. It is operation | movement explanatory drawing which shows the spare-tire holding structure in 2nd Embodiment of this invention. It is the perspective view seen from the vehicle body diagonally back which shows the spare-tire carrier of the spare-tire holding structure in 2nd Embodiment of this invention. It is a sectional side view which shows the spare tire holding structure in 3rd Embodiment of this invention. It is effect | action explanatory drawing which shows the spare-tire holding structure in 3rd Embodiment of this invention. It is a sectional side view which shows the spare tire holding structure in the modification of 3rd Embodiment of this invention. It is a sectional side view which shows the spare tire holding structure in the other modification of 3rd Embodiment of this invention.

Explanation of symbols

12 Back door 14 Spare tire carrier (tire carrier)
14B Extension part of spare tire carrier 18 Spare tire 24 Tire carrier reinforcement 24D Extension part of tire carrier reinforcement 24E Engagement protrusion (engagement means) of tire carrier reinforcement
29 Back door opening 30 Lower back panel 32 Closed section (Body side frame)
40 Rear wall portion of closed section 40A Engaging recess (engaging means)
46 engagement pin (engagement means)
50 engagement pin (engagement means)

Claims (2)

A tire carrier holding a spare tire,
A tire carrier reinforcement disposed on the back door of the vehicle body and attaching the tire carrier;
A body side skeleton that forms the periphery of the back door opening formed at the rear of the vehicle body;
A spare tire comprising: an extension portion extending to a position overlapping with the body-side skeleton portion in the longitudinal direction of the vehicle body in at least one of the tire carrier and the tire carrier reinforcement Retaining structure.   The spare tire holding structure according to claim 1, further comprising engagement means for engaging the extension portion and the body-side skeleton portion.

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