JPH1016831A - Spare tire hanger mounting structure - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To improve support rigidity of a hanger bolt and mounting strength of a muffler mounting bracket. SOLUTION: A closed cross section 4 formed by a rear end cross member 3 is formed on the upper side of a rear end of a floor panel 1 and a closed cross section 21 formed by a reinforcing member 20 is formed on a lower side. By arranging the hanger bolt 10 through the closed cross-sections 4 and 21 in the up-down direction, the span between the upper and lower support points of the hanger bolt 10 can be enlarged, and the support rigidity can be increased. Further, since the muffler mounting bracket 23 is joined to the reinforcing member 20, the mounting strength of the muffler mounting bracket 23 can be increased.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for a spare tire hanger of an automobile for holding a spare tire below a floor panel.

[0002]

2. Description of the Related Art FIGS. 4 and 5 show a conventional spare tire hanger mounting structure, wherein 1 is a floor panel, 2 is a rear end panel joined to the rear end of the floor panel 1, and 3 is a floor panel 1 and a rear end panel. 2 shows a rear end cross member joined and arranged to form a closed cross-section 4 in the vehicle width direction across a corner portion on the vehicle interior side formed by the vehicle body 2.

A cross member 5 is joined to the lower surface of the floor panel 1 and has a closed cross section 6 formed in the vehicle width direction. A bracket 7 is connected and fixed to the side wall, and a rotating hanger 8 is attached to the bracket 7. It is mounted so that it can rotate vertically.

[0004] Reinforces 9 having a U-shaped cross section are jointed and arranged along the rear end cross member 3 and the floor panel 1 at required positions in the closed cross section 4. Penetrating, that is, the upper wall 9a of the reinforcement 9 and the upper wall 3a of the rear end cross member 3.
The hanger bolt 10 is inserted from above through the lower wall 9b of the reinforcement 9 and the floor panel 1, and the rear free end of the rotating hanger 8 is attached and supported by the hook 11 screwed to the lower end. Then, the spare tire T is held in a substantially horizontal state below the floor panel 1 by the rotating hanger 8, and when removing the spare tire T, the hanger bolt 10 is rotated in the loosening direction of the hook 11 so that the hook 11 is moved. Rotating hanger 8
And the spare hanger 8 can be removed by turning the rotating hanger 8 downward.

[0005] A cylindrical reinforcing collar 12 is joined and arranged over the upper and lower walls 9a, 9b of the reinforce 9;
The above-mentioned hanger bolt 10 is inserted through the collar 12.

A muffler mounting bracket 13 is provided at the rear end of the lower surface of the floor panel 1 where the rear end cross member 3 is provided. The muffler mounting bracket 13 allows the exhaust muffler 14 to resilient the elastic body 15. It is designed to be elastically supported through.

The muffler mounting bracket 13 includes a base bracket 13a joined across the floor panel 1 and the rear end panel 2, and an arm-shaped bracket body 1 joined to a side wall of the base bracket 13a and extending laterally.
3b, and the above-mentioned elastic body 15 is mounted over the bracket body 13b and the arm portion 14a fixed to the exhaust muffler 14. In FIG. 5, reference numeral 16 denotes a bracket for applying a spare tire, which is joined to the lower surface of the floor panel 1.

This similar structure is disclosed, for example, in Japanese Utility Model Laid-Open No. 2-398.
No. 6 discloses this.

[0009]

The hanger bolt 10 is supported at two points in the upper and lower portions of the closed cross-section 4 formed by the rear end cross member 3. The rear end cross member 3 has a lower projecting height. Because the space occupied by the passenger compartment is not large, the upper and lower
The span between the support points is short, and the support rigidity is disadvantageous against the torsional load acting on the hanger bolt 10.

In order to elastically support the exhaust muffler 14, a muffler mounting bracket 1 is provided on the lower surface of the floor panel 1.
3, the supporting point of the exhaust muffler 14 is largely separated from the lower surface of the floor panel 1, so that a separate box-shaped base bracket 13a is required as described above, which is disadvantageous in cost. I will.

In view of the above, according to the present invention, the support rigidity of the hanger bolt can be increased without increasing the protruding height of the rear end cross member toward the passenger compartment, and the muffler mounting bracket is advantageously disposed in terms of strength and cost. And a spare tire hanger mounting structure.

[0012]

According to a first aspect of the present invention, there is provided a rear end cross member which forms a closed cross section in the vehicle width direction across a corner on the vehicle compartment side formed by a rear end of a floor panel and a rear end panel. These closed cross-sections are joined and arranged, and a reinforcing member forming a closed cross-section is formed on the lower surface of the floor panel below the arrangement portion of the rear end cross member, and is formed in multiple stages in the vertical direction with the floor panel as a boundary. The hanger bolts are inserted through the upper and lower parts of the hanger bolts, and the lower end of the hanger bolts supports the rear free end of the rotating hanger that holds the spare tire below the floor panel. And

According to a second aspect of the present invention, a muffler mounting bracket which projects laterally and supports the exhaust muffler is joined to the reinforcing member according to the first aspect.

According to a third aspect of the present invention, the hanger bolt of the first and second aspects of the present invention is inserted through the upper wall of the rear end cross member and the lower wall of the reinforcing member. It is characterized in that collars are joined and arranged.

According to a fourth aspect of the present invention, the collar according to the third aspect is erected on the base of the muffler mounting bracket in advance, and the base is joined to the lower wall of the reinforcing member, and the collar is inserted and arranged vertically. It is characterized by:

According to a fifth aspect, the reinforcing member according to any one of the first to fourth aspects is joined in a front-rear direction across a cross member joined to a lower surface of a floor panel in a vehicle width direction and a rear end panel. And a spare tire is elastically contacted with a lower wall surface of the reinforcing member.

[0017]

According to the first aspect of the present invention, the hanger bolt is vertically penetrated through the closed cross-section formed on the upper surface of the floor panel and the closed cross-section formed on the lower surface of the floor panel. Since the span between the upper and lower support points of the hanger bolt is large and the portion penetrating the floor panel at the boundary between the upper and lower closed sections is supported and supported at three points, it acts on the hanger bolt. A large resistance to a torsional load can be obtained, the support rigidity of the hanger bolt can be further increased, and the holding stability of the spare tire can be enhanced.

According to the second aspect, in addition to the effect of the first aspect, since the muffler mounting bracket for supporting the exhaust muffler is joined to the reinforcing member constituting the closed cross section on the lower side of the floor panel, the exhaust is provided. Even if the support point of the muffler is far away from the lower surface of the floor panel, the muffler mounting bracket can be provided without using a dedicated spacer member such as a base bracket, and the number of parts and the number of mounting work can be reduced. In addition to the cost advantage, the muffler mounting bracket is joined to the reinforcing member, so that sufficient mounting strength can be ensured.

According to the third aspect, in addition to the effects of the first and second aspects, the collar is joined to the upper end wall of the rear end cross member and the lower wall of the reinforcing member through the upper and lower closed cross sections. Since the hanger bolt is inserted through the collar, the hanger bolt insertion portion can be reinforced by the collar, and the support rigidity of the hanger bolt can be further increased.

According to the fourth aspect, in addition to the effect of the third aspect, since the collar and the muffler mounting bracket are sub-assembled, the number of parts management steps can be reduced, and of course, the collar and the muffler mounting bracket are reinforced. Since it can be assembled to the members at the same time and the number of work steps can be reduced, it is possible to obtain the cost advantage.

Further, since the muffler mounting bracket is joined to the portion reinforced by the collar on the lower wall of the reinforcing member, the mounting strength of the muffler mounting bracket can be further increased, and the reliability can be improved. .

According to the fifth aspect, in addition to the effects of the first to fourth aspects, the reinforcing member is joined and disposed in the front-rear direction across the cross member on the lower surface of the floor panel and the rear end panel, so that the floor rigidity is improved. The support stiffness of the spare tire can be further increased to further enhance the rigidity of the spare tire, and the spare tire can be elastically contacted with the reinforcing member to be held. In comparison, the contact area of the spare tire can be increased, and the spare tire can be held more easily.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the accompanying drawings, in which the same reference numerals are assigned to the same parts as in the above-mentioned conventional configuration.

In FIGS. 1 to 3, a rear end of the floor panel 1 is joined to a rear end panel 2, and a corner formed by the rear end of the floor panel 1 and the rear end panel 2 on the passenger compartment side is provided. , These floor panel 1 and rear end panel 2
A rear end cross member 3 having an L-shaped cross-section is joined and arranged to form a closed cross-section 4 in the vehicle width direction.

Inside the closed section 4 where the hanger bolts 10 are arranged, a reinforcement 9 having a U-shaped cross section is arranged along the rear end cross member 3 and the floor panel 1. The rear end cross member 3 is joined to the upper wall and the floor panel 1.

The hanger bolt 1 of the floor panel 1
0 is provided on the lower surface of the portion where the rear end cross member 3 is disposed, on the lower surface of the portion where the rear end cross member 3 is disposed.
0 is joined and arranged.

In this embodiment, the reinforcing member 20 is formed in an inverted hat-shaped cross section, and is joined to the lower surface of the floor panel 1 in the vehicle width direction to form the cross member 5 and the rear end panel 2 having the closed cross section 6. They are joined and arranged in the front-rear direction.

The rotating hanger 8 has a front end mounted on a bracket 7 joined and fixed to the cross member 5 so as to be rotatable in the vertical direction. The tire T is held substantially horizontally below the floor panel 1 or is detachable, and when the spare tire T is held, a portion deviated from the center of the spare tire T to one side in the radial direction The spare member T is elastically contacted with the lower wall 20a of the reinforcing member 20 so as to securely hold the spare tire T without shifting.

Further, the side of the spare tire T opposite to the side held by the reinforcing member 20 is elastically contacted with a spare tire pad bracket 16 joined to the lower surface of the floor panel 1 to hold the spare tire T. I try to balance it.

A hanger bolt 10 is inserted through the upper and lower portions of the hanger bolt 10 by vertically penetrating through the closed cross-sections 4 and 21 formed in multiple stages vertically above and below the floor panel 1. The free end of the rotating hanger 8 is engaged and supported by a threaded hook 11.

The upper wall 9a of the reinforcement 9 joined to the lower surface of the upper wall 3a of the rear end cross member 3 and the lower wall 20a of the reinforcing member 20
A cylindrical long collar 22 is joined and arranged to straddle and is reinforced, and the hanger bolt 10 is inserted through the collar 22.

Further, a muffler mounting bracket 23 projecting laterally is joined to the reinforcing member 20, and the exhaust muffler 14 is attached to the elastic body 15 by the muffler mounting bracket 23.
It is designed to be elastically supported via a.

The muffler mounting bracket 23 is formed of, for example, a pipe material, and its base 23a is formed in a flat shape, and the base 23a is joined and fixed to the lower wall of the reinforcing member 20, and the side protruding end 23b is formed. The elastic body 15 is engaged with the arm portion 14a projecting from the exhaust muffler 14.

In this embodiment, the above-mentioned collar 22 has its lower end previously set to the base 23a of this muffler mounting bracket 23.
The collar 22 is inserted and arranged from below the reinforcing member 20, and the base 23 a is joined to the lower wall 20 a of the reinforcing member 20. Can be fixed at the same time.

According to the above embodiment, the spare tire T
In the holding state, the hanger bolt 1
0, a torsional load is applied.
Is a closed cross section 4 formed on the upper surface side of the floor panel 1,
A closed cross section 21 formed on the lower surface side of the floor panel 1 is vertically penetrated and arranged, and the hanger bolt 1
The span between the support points above and below 0 can be increased,
In addition, the middle portion of the hanger bolt 10 is also supported by a penetrating portion of the portion where the floor panel 1 and the lower wall 9b of the reinforcement 9 overlap each other at the boundary between the upper and lower closed cross-sections 4 and 21. Since it is supported at a point, a large resistance to a torsional load acting on the hanger bolt 10 is obtained, the support rigidity of the hanger bolt 10 can be further increased, and the holding stability of the spare tire T can be increased. .

In particular, in this embodiment, the upper wall of the closed section 4 and the closed section 2
1, a long collar 22 is joined and arranged over the lower wall portion, and the hanger bolt 10 is inserted into the collar 22 to reinforce the insertion arrangement portion of the hanger bolt 10. The rigidity can be further increased.

The lower closed section 2 on the lower side of the floor panel 1
Since the reinforcing member 20 constituting the first tire 1 is arranged in the front-rear direction across the cross member 5 on the lower surface of the floor panel 1 and the rear end panel 2, the rigidity of the floor is increased and the rigidity of supporting the spare tire T is increased. The spare tire T can be further increased, and the spare tire T can be held by being elastically contacted with the lower wall 20b of the reinforcing member 20 in the radial direction.
Can be improved.

Further, since the muffler mounting bracket 23 for supporting the exhaust muffler 14 is joined to the reinforcing member 20, even if the support point of the exhaust muffler 14 is largely separated downward from the lower surface of the floor panel 1, the exclusive member is provided. The muffler mounting bracket 23 can be disposed without using a spacer member such as a base bracket, and the number of parts and the number of mounting operations can be reduced. Since the brackets 23 are joined, the mounting strength can be sufficiently ensured.

In particular, the muffler mounting bracket 2
3 has a base 23a formed flat and joined to the lower wall 20a surface of the reinforcing member 20, and a long collar 22 for reinforcement is previously joined and arranged on the base 23a to be sub-assembled. In addition to the fact that the number of man-hours for parts management can be reduced, the collar 22 and the muffler mounting bracket 23 can be simultaneously assembled to the reinforcing member 20 and the number of man-hours can be reduced.

Furthermore, since the muffler mounting bracket 23 is joined to the lower wall 20a of the reinforcing member 20 at the portion reinforced by the collar 22, the mounting strength of the muffler mounting bracket 23 can be further increased. Reliability can be improved.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a perspective view of the embodiment.

FIG. 3 is a plan view of the embodiment with the floor panel removed.

FIG. 4 is a sectional view showing a conventional structure.

FIG. 5 is a perspective view showing a conventional structure.

[Description of Signs] 1 Floor panel 2 Rear end panel 3 Rear end cross member 4 Upper closed cross section 5 Cross member 8 Rotating hanger 10 Hanger bolt 14 Exhaust muffler 20 Reinforcement member 21 Lower closed cross section 22 Collar 23 Muffler mounting bracket

Claims (5)

[Claims] A rear end cross member which forms a closed cross-section in the vehicle width direction across a corner on the vehicle interior side formed by a rear end of the floor panel and a rear end panel;
Reinforcing members forming a closed cross section below the arrangement part of the rear end cross member are joined and arranged on the lower surface of the floor panel, and these closed cross sections formed in multiple stages in the vertical direction with the floor panel as a boundary are vertically aligned. A spare tire hanger wherein a hanger bolt is inserted through the hanger bolt to support a rear free end of a rotating hanger for holding the spare tire below the floor panel at a lower end of the hanger bolt. Mounting part structure. 2. The spare tire hanger mounting part structure according to claim 1, wherein a muffler mounting bracket that projects laterally to the reinforcing member and supports the exhaust muffler is joined and disposed. 3. A hanger bolt insertion portion, wherein a collar through which the hanger bolt is inserted is disposed so as to straddle the upper wall of the rear end cross member and the lower wall of the reinforcing member. 2. Spare tire hanger mounting structure according to 2. 4. The spare tire according to claim 3, wherein the collar is previously erected on the base of the muffler mounting bracket, and the base is joined to the lower wall of the reinforcing member so that the collar is inserted vertically. Hanger mounting structure. 5. A reinforcing member is arranged in a front-rear direction across a cross member joined to a lower surface of a floor panel in a vehicle width direction and a rear end panel, and a spare tire is elastically contacted with a lower wall surface of the reinforcing member. The spare tire hanger mounting part structure according to any one of claims 1 to 4, wherein: