JP3885316B2 - Rear seat back fixing bracket arrangement structure - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a rear seat back fixing bracket used for fixing a seat back of a rear seat to a vehicle body.
[0002]
[Prior art]
6 to 8 show an automobile (vehicle) such as a passenger car, where 1 is the body of the automobile, 2 is a side wall of the car body 1, 3 is the floor of the car body 1, and 4 is provided on the rear side of the car body 1. Rear wheel house inner 5 is a suspension tower that bulges upward from the center of the rear wheel house inner 4, and 6 is a seat back support panel in which both sides are fixed to the front of left and right suspension towers 5 (not shown). 6. Bolt insertion holes 7 are formed in the upper part in the vicinity of the side portions of the seat back support panel 6, and nuts 8 are welded and fixed on the back surface of the seat back support panel 6 so as to match the insertion holes 7.
[0003]
Reference numeral 9 denotes a rear seat disposed on the front side of the seat back support panel 6. The rear seat 9 has a seat cushion 10 and a seat back 11.
[0004]
The upper portion of the seat back 11 is fixed to the seat back support panel 6 by a fixing device 12. The fixing device (not shown) includes the striker 13 shown in FIGS. 7 and 8 and a latch plate (not shown) that is engaged with the striker 13.
[0005]
The striker 13 includes a mounting plate 13a and a U-shaped locking member 13b having both ends fixed to the mounting plate 13a. As shown in FIG. 8, the striker 13 is fixed to the seat back support panel 6 by screwing a bolt 14 penetrating the mounting plate 13 a to the nut 8 through the insertion hole 7.
[0006]
A latch plate (not shown) of the fixing device is attached in the upper part of the seat back 11. In addition, the latch plate is supported by the locking member 13 b of the striker 13 by supporting the seat back 11 along the seat back support panel 6, and the upper portion of the seat back 11 is secured to the seat back support panel 6. (For a similar technique, refer to Japanese Patent Laid-Open No. 5-270305).
[0007]
[Problems to be solved by the invention]
However, the seat back support panel 6 is formed of a thin plate, and the forward load on the seat back 11 is applied in the direction in which the striker 13 is peeled off and acts in the out-of-plane direction of the seat back support panel. The support strength of 11 was structurally disadvantageous.
[0008]
Further, in order to improve the support strength of the seat back 11, it is conceivable to reinforce the periphery of the nut 8. However, an increase in weight due to an increase in plate thickness and an increase in the number of parts due to the addition of reinforcing materials are inevitable.
[0009]
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a rear seat back fixing bracket that can reliably support a load even when a large forward load acts on a striker on the vehicle body side from the seat back.
[0010]
[Means for Solving the Problems]
Accordingly, in order to achieve this object, the invention of claim 1 is a rear seat back fixing in which a seat back is held in a seatable state by engaging an engagement member of a retractable seat back with a striker provided on the vehicle body side. In the bracket mounting structure, the suspension base member that is integrally formed with the suspension tower upper end opening provided at the upper portion of the rear wheel house inner and receives the shock absorber mounting bracket that supports the upper end portion of the rear suspension spring, A seat back fixing bracket that is positioned near the upper end and that has the striker at the head of the suspension tower on the vehicle body side and is fastened together with the striker and the suspension base member together with a fastening member. the provided, said striker extending設方It is characterized in that the rear seat back mounting bracket arrangement structure perpendicular to the axial direction of the fastening member.
[0011]
The invention according to claim 2 is characterized in that the seat back fixing bracket is provided so as to cover the entire periphery of the edge of the suspension tower upper end opening.
[0012]
Further, in the invention of claim 3, the bracket for fixing the seat back is provided with an extension part integrally projecting toward the front of the vehicle, and a fixed seat surface for fixing the striker to the extension part. Is formed integrally.
[0013]
According to a fourth aspect of the present invention, the seatback fixing bracket is provided with a flange projecting along the peripheral wall of the suspension tower upper end opening.
[0014]
Further, according to the invention of claim 5, a flange is erected along the peripheral wall of the suspension tower upper end opening in the seat back fixing bracket, and the flange is integrally formed up to the extension portion of the fixed seat surface. It is characterized by that.
[0016]
Further, the invention of claim 6 is characterized in that the striker is integrally attached to the seat back fixing bracket in advance.
[0017]
[Action]
According to the first aspect of the present invention, when a forward load acts on the striker from the seat back, the load is input to the head of the suspension tower via the seat back fixing bracket. As a result, even if a large forward load acts on the striker on the vehicle body side from the seat back, it is applied to the suspension tower in a direction that is advantageous in terms of strength as a load in the shear direction along its head. It can be supported by a suspension tower that is advantageous in terms of strength. In addition, since the extension direction of the striker is substantially perpendicular to the axial direction of the fastening member, the forward load input from the seat back to the striker is input to the fastening member in a direction orthogonal to the axial direction. Become. Therefore, the load in the peeling direction is not applied to the striker due to the load input from the seat back, and the mounting strength of the striker can be sufficiently secured.
[0018]
According to the invention of claim 2, since the seat back fixing bracket is provided so as to cover the entire periphery of the edge of the suspension tower upper end opening, the head of the suspension tower can be reinforced. .
[0019]
Furthermore, according to the invention of claim 3, the bracket for fixing the seat back is provided with an extension part integrally projecting toward the front of the vehicle, and the extension part is fixed for fixing the striker. Since the seating surface is integrally formed, the striker can be easily attached.
[0020]
According to a fourth aspect of the present invention, the seat back fixing bracket has a flange projecting along the peripheral wall of the suspension tower upper end opening, so that the seat back fixing bracket can be easily positioned on the suspension tower head. The strength of the head of the suspension tower can be further increased.
[0021]
Further, in the invention according to claim 5, a flange is erected along the suspension tower upper end opening peripheral wall in the seat back fixing bracket, and the flange is integrally formed up to an extension portion of the fixed seat surface. Therefore, the strength of the fixed seat surface can be sufficiently secured.
[0023]
In the invention of claim 6 , since the striker is integrally attached to the seat back fixing bracket in advance, the striker can be attached only by attaching the seat back fixing bracket to the head of the suspension tower.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to FIGS.
[0025]
FIG. 5 shows an automobile (vehicle) such as a passenger car. In FIG. 5, reference numeral 20 denotes a vehicle body, 21 denotes a side wall of the vehicle body 20, 22 denotes a floor of the vehicle body 20, 23 denotes a rear wheel house inner provided integrally with the side wall 21 at the rear side of the vehicle body 20, 24. Is a suspension tower that bulges upward from the center of the rear wheel house inner 23.
[0026]
The suspension tower 24 has an opening 24b at the upper end of the head 24a, as shown in FIGS. The opening 24b is closed by an end plate (end wall) 25 fitted into the head 24a and welded and fixed to the head 24a as a suspension base member. An annular protrusion 26 that slightly protrudes upward is formed in the center of the end plate 25, and a through hole 27 that penetrates vertically is formed in the annular protrusion 26. The end plate 25 is formed with three bolt insertion holes 28, 28, 28 positioned around the through hole 27. The three bolt insertion holes 28, 28, 28 are arranged on a circle concentric with the through-hole 27 and are formed at equal intervals (equal pitch) in the circumferential direction. One of the three bolt insertion holes 28, 28, 28 is positioned on the front side of the annular protrusion 26.
[0027]
Further, in the suspension tower 24, as shown by a two-dot chain line in FIG. 1, an upper end portion 29a of a rear shock absorber 29 is disposed. The rear shock absorber 29 extends and extends the cylinder 30 with an extendable cylinder 30, a spring receiving plate (shock absorber mounting bracket) 31 held at the upper end of the cylinder 30, and an upper end elastically contacting the spring receiving plate 31. The rear suspension spring 30a is biased in the direction. In addition, the spring receiving plate 31 protrudes upward through the spring receiving plate 31, and three bolts 32 corresponding to the three bolt insertion holes 28 described above are fixed as fastening members. Since this structure employs a well-known structure, detailed description thereof is omitted.
[0028]
As shown in FIGS. 1 to 3, the three bolts 32 pass through the three bolt insertion holes 28 of the end plate 25 and project upward from the end plate 25. A mounting plate 33 as a rear seat back fixing bracket is disposed on the end plate 25. As shown in FIG. 3, the mounting plate 33 includes a U-shaped fixing plate portion 34 that bifurcates backward so as to sandwich the annular protrusion 26 and covers substantially the entire end plate 25, and a fixing plate portion. 34 has a reinforcing side wall (flange) 35 connected downward to the side of the vehicle compartment side of 34 and an extension 36 connected to the front end of the fixed plate portion 34 toward the front of the vehicle.
[0029]
The extended portion 36 includes an inclined wall 36a that is inclined obliquely upward and forward from the front end of the fixed wall 34, an upper wall (fixed seat surface) 36b that is connected forward to the upper end of the inclined wall 36a, and an inclined wall. Reinforcing side walls (flanges) 36c and 36d connected downward on both sides of 36a and upper wall 36b. The reinforcing side wall 36 c is connected to the reinforcing side wall 35. The reinforcing side wall 35 extends along the side surface in the vehicle width direction and a part of the front surface of the peripheral wall of the upper end opening of the suspension tower 24 as shown in FIG. Therefore, the bolt insertion hole 28 of the end plate 25 and the bolt insertion hole 37 of the mounting plate 33 are made to coincide with each other by bringing the reinforcing side wall 35 into contact with the side surface and the front surface of the peripheral wall of the upper end opening of the suspension tower 24. Can do.
[0030]
The fixed plate portion 34 is formed with bolt insertion holes 37, 37, 37 corresponding to the three bolt insertion holes 28, 28, 28, respectively, and the bolt insertion hole 38 is formed in the upper wall 36b. Bolts 32 are inserted into the bolt insertion holes 37 as shown in FIGS. In addition, seated nuts 38 are screwed onto the upper ends of the respective bolts 32, and the end plate 25 and the fixed plate 34 are fastened together between the spring receiving plate 31 and the seated nut 39.
[0031]
Further, both sides of a seat back support panel 40 extending in the vehicle width direction are welded and fixed to the front surfaces of the left and right suspension towers 24 (not shown) as shown in FIG. A rear seat 41 is disposed in front of the seat back support panel 40. The rear seat 41 has a rear seat cushion 42 disposed on the floor 22 and a rear seat back 43 along the seat back support panel 40. The end plate (suspension base member) 25 described above is located in the vicinity of the upper end of the side portion of the rear seat back 43.
[0032]
A rear seat back fixing device 44 is interposed between the upper part of the side portion of the rear seat back 43 and the mounting plate 33. The rear seat back fixing device 44 includes a latch plate 45 of a latch mechanism mounted on the upper portion of the rear seat back 43, and a striker (engaging member) 46 with which the latch plate 45 is engaged. Since this latch mechanism can adopt a well-known structure, its detailed description is omitted.
[0033]
The striker 46 includes a base plate 47 disposed on the upper wall 36, and a shaft-like U-shaped locking member 48 having both ends fixed to the base plate 47. The striker 46 is inserted into the bolt insertion hole 38 of the upper wall 36b by inserting the bolt 49 inserted from above into the bolt insertion hole 47a of the base plate 47 and screwing the nut 50 into the lower end of the bolt 49. It is integrally fixed to the extension 36 of the mounting plate 33. Moreover, the latch plate 45 is engaged with the locking member 48 of the striker 46.
[0034]
The striker 46 can be easily attached by attaching the striker 46 to the attachment plate 33 in advance and attaching the attachment plate 33 to the suspension tower 24 as described above. Moreover, the striker 46 is substantially horizontal in a direction substantially perpendicular to the axial direction of the bolt (fastening member) 32 that fixes the mounting plate (bracket for fixing the seat back) 33 to the head 24a of the suspension tower 24, that is, forward. It is extended.
[0035]
Next, the operation of the seat back fixing bracket arrangement structure having such a configuration will be described.
[0036]
When a forward load is applied to the rear seat back 43, this load is input as a forward tensile load to the striker 46 via the latch plate 45, and the tensile load input to the striker 46 is attached to the mounting plate via the bolt 49. 33 is input to the extension 36. At this time, the tensile load acts on the bolt 49 in a direction orthogonal to the axial direction, so that a load in the peeling direction is not applied to the striker 46. Moreover, since the extension portion 36 is reinforced by the reinforcing side walls 36c and 36d, and the reinforcing side wall 35 is connected to the reinforcing side wall 36c, the strength of the extension portion 36 against the input tensile load is improved.
[0037]
Further, the tensile load input to the extension 36 is distributed to the end plate 25 via three bolts (fastening members) 32, 32, 32 that fix the mounting plate 33 to the end plate 25 of the suspension tower 24. Is input. Moreover, at this time, the tensile load acts on the bolt 32 in a direction orthogonal to the axial direction, that is, in a shearing direction along the end plate 25. As a result, the load input from the rear seat back 43 is applied to the head of the suspension tower 24, that is, the end plate 25 in an advantageous direction in terms of strength, so that the mounting strength of the striker 46 is improved and the rear seat back 43 is strong. It will be fixed to. .
[0038]
【The invention's effect】
As described above, according to the first aspect of the present invention, when a forward load is applied from the seat back to the striker, this load is input to the head of the suspension tower via the seat back fixing bracket. As a result, even if a large forward load acts on the striker on the vehicle body side from the seat back, it is applied to the suspension tower in a direction that is advantageous in terms of strength as a load in the shear direction along its head. It can be supported by a suspension tower that is advantageous in terms of strength. In addition, since the extension direction of the striker is substantially perpendicular to the axial direction of the fastening member, the forward load input from the seat back to the striker is input to the fastening member in a direction orthogonal to the axial direction. Become. Therefore, the load in the peeling direction is not applied to the striker due to the load input from the seat back, and the mounting strength of the striker can be sufficiently secured.
[0039]
In the invention of claim 2, since the seat back fixing bracket is provided so as to cover the entire periphery of the edge of the suspension tower upper end opening, the head of the suspension tower can be reinforced.
[0040]
Further, in the invention of claim 3, the bracket for fixing the seat back is provided with an extension part integrally projecting toward the front of the vehicle, and a fixed seat surface for fixing the striker to the extension part. Since they are integrally formed, the striker can be easily attached.
[0041]
According to a fourth aspect of the present invention, the seat back fixing bracket has a flange projecting along the peripheral wall of the suspension tower upper end opening, so that the seat back fixing bracket can be easily positioned on the suspension tower head. The strength of the head of the suspension tower can be further increased.
[0042]
Further, in the invention according to claim 5, a flange is erected along the suspension tower upper end opening peripheral wall in the seat back fixing bracket, and the flange is integrally formed up to an extension portion of the fixed seat surface. Therefore, the strength of the fixed seat surface can be sufficiently secured.
[0044]
In the invention of claim 6 , since the striker is integrally attached to the seat back fixing bracket in advance, the striker can be attached only by attaching the seat back fixing bracket to the head of the suspension tower.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an essential part of a seat back fixing bracket mounting structure according to the present invention.
FIG. 2 is a cross-sectional view of another portion of the connecting portion of the end plate, the spring receiving plate, and the mounting plate shown in FIG.
3 is an exploded perspective view of a seat back fixing bracket attaching portion shown in FIG. 1. FIG.
4 is an explanatory diagram of a main part of a suspension tower in which the bolt of FIG. 3 is omitted.
FIG. 5 is an explanatory view showing a relationship between a striker attached by the structure shown in FIGS. 1 to 4 and a rear seat.
FIG. 6 is an explanatory view of an automobile having a conventional rear seat fixing structure.
7 is an exploded perspective view showing the relationship between the seat back support panel and the striker in FIG. 6. FIG.
FIG. 8 is an explanatory diagram of a portion where the striker of FIG. 7 is attached.
[Explanation of symbols]
20 ... Vehicle body 23 ... Rear wheel house inner 24 ... Suspension tower 24a ... Head 24b ... Upper end opening 25 ... End plate (suspension base member)
29 ... Shock absorber 30a ... Rear suspension spring 31 ... Spring support plate (Shock absorber mounting bracket)
32 ... Bolt (fastening member)
33 ... Mounting plate (bracket for fixing seat back)
35 ... Reinforcing side wall (flange)
36 ... Extension part 36b ... Upper wall (fixed seat surface)
36c ... Reinforcing side wall (flange)
43 ... Rear seat back 45 ... Latch plate (engaging member)
46 ... striker

Claims (6)

In a rear seat back fixing bracket arrangement structure in which a striker provided on the vehicle body side is engaged with an engagement member of a retractable seat back to hold the seat back in a seatable state,
A suspension base member that is integrally formed with a suspension tower upper end opening provided at an upper portion of the rear wheel house inner and receives a shock absorber mounting bracket that supports the upper end portion of the rear suspension spring is positioned near the upper end of the seat back side portion,
In the head of the vehicle body side suspension tower, the striker is provided,
A seat back fixing bracket is provided that is disposed by being fastened with a fastening member together with each of the striker and the suspension base member ,
The rear seat back fixing bracket disposition structure , wherein an extension direction of the striker is orthogonal to an axial direction of the fastening member .   2. The rear seat back fixing bracket arrangement structure according to claim 1, wherein the seat back fixing bracket is provided so as to cover substantially the entire periphery of the edge of the suspension tower upper end opening.   The seat back fixing bracket is provided with an extension portion integrally projecting toward the front of the vehicle, and a fixed seat surface for fixing the striker is integrally formed on the extension portion. The rear seat back fixing bracket disposition structure according to claim 1 or 2.   The rear seat back fixing bracket disposition structure according to claim 1 or 2, wherein a flange is projected from the suspension tower upper end opening peripheral wall to the seat back fixing bracket.   4. The seat back fixing bracket is provided with a flange standing along a peripheral wall of the upper end opening of the suspension tower, and the flange is integrally formed up to an extension of the fixed seat surface. The bracket arrangement structure for fixing the rear seat back as described.  3. The rear seat back fixing bracket arrangement structure according to claim 1, wherein the striker is integrally attached to the seat back fixing bracket in advance.

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