JP4063051B2 - Mounting structure for vehicle seat - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle seat mounting structure in which an opening is provided between a rear seat and a luggage compartment at the rear of the rear seat, and a seat back of the rear seat is mounted to a vehicle body behind the seat using mounting means.
[0002]
[Prior art]
Conventionally, as a mounting structure for a vehicle seat, there is the following structure. That is, the seat back of the rear seat is configured by a wire frame, and a lock portion is provided on the vehicle body (see the rear seat back member) located between the rear seat and the rear compartment of the rear seat, and the rear seat A part of the wire frame in the seat back is locked (see, for example, Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 7-291004.
[0004]
[Problems to be solved by the invention]
And above the rear seat, when the luggage compartment of a rear seat rear openings between the formed and put baggage weight is large luggage compartment, luggage moves forward during a vehicle collision, the luggage opening Therefore, there is a problem that the impact load of the load from the rear is input to the rear seat.
[0005]
Accordingly, the present invention provides a curved portion that absorbs an impact when a collision load from the rear acts on the hook portion that attaches the seat back of the rear seat to the vehicle body behind the seat, so that the weight of the vehicle body is not deteriorated. It can absorb impact loads such as luggage from the rear, and by setting the seat frame to the wire frame, it can be easily used without incurring weight deterioration by utilizing the ease of forming this wire frame It aims at providing the attachment structure of the vehicle seat which can form a curved part .
[0006]
[Means for Solving the Problems]
In the vehicle seat mounting structure according to the present invention , an opening is provided between a rear seat and a luggage compartment at the rear of the rear seat, and a seat back of the rear seat is attached to a vehicle body behind the seat via a hook portion. In the mounting structure, the hook portion is provided with a curved portion that absorbs an impact when a collision load is applied from behind, and the seat back of the rear seat includes a seat frame formed of a wire frame, The seat frame is attached to the vehicle body behind the seat via the hook portion, the hook portion is formed at the wire tip of the wire frame, and the hook support member on the vehicle body side that supports the hook portion includes the hook portion. A wire frame on the front side of the vehicle with respect to the hook portion is arranged on the left and right sides of the vehicle along the rear surface of the seat back. It is made of formed so as to extend in the left and right respectively.
[0007]
According to the above configuration, since the hook portion is provided with the shock absorbing curved portion, and the hook support member on the vehicle body side is provided with the through hole into which the hook portion is inserted, the hook portion can be securely inserted. the course, without causing deterioration of the body weight, Ru can be reliably absorb an impact load such as baggage from the rear of the vehicle after the collision.
[0008]
Further, the seat frame from those set in the wire frame, it is possible to construct a bending portion by a simple structure without causing the deterioration of the weight by using the molding easiness of the wire frame.
[0009]
In one embodiment of the invention, wherein the groove for locking by moving the hook ahead at the time of a collision to extend forward from an end of the through hole is provided.
According to the above configuration, the hook portion at the tip of the wire in the wire frame can be reliably locked to the hook support member on the vehicle body side when an impact load is applied.
[0010]
In one embodiment of the present invention, the through hole has a predetermined length in the vehicle width direction, and protrudes downward between the groove portions extending forward from both ends of the through hole so that the hook portion is a groove portion. A restricting portion is provided for preventing the rearward movement after moving to the rear.
[0011]
The restriction portion having the above-described configuration may be formed by a claw portion provided on the hook support member on the vehicle body side .
According to the above configuration, the hook portion can be prevented from coming off due to the seat back returning when the impact load is applied.
[0012]
In one embodiment of the invention, between the through-hole on the difference filled-in the hook portion and the through hole is one spacer to break at a predetermined or more impact load is interposed.
The spacer having the above-described configuration may be formed of a resin member such as a resin bush or other non-metallic members.
According to the above configuration, it is possible to prevent the generation of noise due to the contact between the hook portion and the hook support member on the vehicle body side at normal times without deteriorating the locking state of the hook portion during the collision action.
[0013]
【Example】
An embodiment of the present invention will be described below in detail with reference to the drawings.
The drawings show a vehicle seat mounting structure. First , a rear vehicle body structure of a vehicle will be described with reference to FIGS. 1, 2, and 3, a convex tunnel portion 2 that extends in the front-rear direction of the vehicle is integrally formed at the center portion of the floor panel 1, while the front-rear direction of the vehicle is formed at the left and right side portions of the floor panel 1 described above. Side sills 3 and 3 are provided.
[0014]
The side sill 3 is a vehicle body rigid member having a side sill closed section 6 that joins the side sill inner 4 and the side sill outer 5 and extends in the front-rear direction of the vehicle. A side sill reinforcement or an annular reinforcement is provided in the side sill closed section 6 as necessary.
[0015]
In addition , a pair of left and right rear side frames 7 and 7 extending rearward from the side sill 3 are provided at the rear portion of the side sill 3 described above, and a closed cross section 9 is formed between the lower surface of the floor panel 1 and the rear floor 8 and the rear side frame 7. is doing.
[0016]
Rear floor 8 above has been connected via a kick-up portion 10 to the rear portion of the floor panel 1 (step portion), the upper part of the above-described tunnel portion 2 around the vehicle along the tunnel portion 2 directions A tunnel reinforcement 11 (so-called high mount) in which the front part is joined to the dash lower panel, the rear part is joined to the upper surface of the kick-up part 10 and the skirt part is joined to the left and right side surfaces of the tunnel part 2. (Backbone frame) is provided, and two closed sections 12, 12 extending in the longitudinal direction of the vehicle are formed on the upper and left sides of the tunnel reinforcement 11 and the tunnel portion 2 so as to improve the floor rigidity and the vehicle body rigidity. Yes.
[0017]
Further , cross members 13 and 14 (so-called No. 2 cross members and No. 3 cross members) connected to the left and right side sills 3 and 3 across the central tunnel portion 2 on the upper surface of the floor panel 1 are separated in the front-rear direction. Let each be provided.
[0018]
Each of these cross members 13 and 14 is a vehicle body rigid member that extends in the vehicle width direction and forms a closed cross section with the floor panel 1.
Further, a rear cross member 15 (a so-called No. 4 cross member) that extends in the vehicle width direction and connects the left and right rear side frames 7 and 7 is provided at the lower portion of the kick-up portion 10 described above. A closed section 16 extending in the vehicle width direction is formed between the kick-up portion 10 and the kick-up portion 10.
[0019]
In addition, another rear cross member 17 (so-called No. No. 1) that extends in the vehicle width direction and connects the left and right rear side frames 7 and 7 below the rear floor 8 at a predetermined distance behind the above-described rear cross member 15. 5 cross members), and a closed cross section 18 extending in the vehicle width direction is formed between the rear cross member 17 and the rear floor 8.
[0020]
As shown in FIG. 1, floor frames 19, 19 extending in the front-rear direction of the vehicle are provided at the lower portion of the floor panel 1 so as to correspond to the middle between the side sill 3 and the tunnel portion 2. , 19 and the floor panel 1 have a closed cross section.
[0021]
As shown in FIG. 2, while providing the tire house inner 20 (synonymous with the wheel house inner), provided the package member 22 as a rigid member connecting the rear pillar inner 21, 21 as the vehicle body right and left side walls of the vehicle width direction Yes.
[0022]
The above-described package member 22 includes a package tray 23 extending in a substantially horizontal direction and a package member front 24 joined to the back side of the front end bent portion of the package tray 23. A closed section 25 extending in the direction is formed.
[0023]
Also, the members 26 extending in the vehicle width direction is provided in correspondence with the inclined lower end portion of the rear window glass, and configured to form a luggage compartment 27 between the package tray 23 and the rear floor 8 above.
[0024]
Incidentally, the rear 11a Figure 2 above the tunnel reinforcement 11, as shown in FIG. 3, have been joined to the upper end face of the kick-up portion 10, the upper surface of the rear part 11a of the tunnel reinforcement 11 is a cross-sectional A gate-shaped bracket 28 is joined.
[0025]
A package junction 29 is provided for connecting the package member 22 to the rear pillar inner 21 and the tire house inner 20 as the vehicle body side wall on the rear side. Between the package junction 29 and the bracket 28 is a substantially V-shape in front view. A V brace 30 is attached as a gusset member, and the load input to the tunnel reinforcement 11 is transmitted and distributed to the left and right vehicle body side walls via the V brace 30.
As shown in FIG. 3, the above-described V brace 30 is located on the back surface portion of the seat back 32 of the rear seat 33 including the seat cushion 31 and the seat back 32.
[0026]
Further, an opening 34 is formed between the above-described rear seat 33 and the cargo compartment 27 at the rear of the rear seat, as shown in FIG. 2, and the vehicle body rigidity is provided by the above-described V brace 30 provided corresponding to the opening 34. It is configured to ensure.
[0027]
Further , as shown in FIG. 2 , the above-described rear seat 33 is set as a bucket seat independent of the rear right seat A, the rear center seat B, and the rear left seat C, and in this embodiment, the seat back 32 cannot be reached. Is set to
[0028]
Next, a vehicle seat mounting structure will be described in detail with reference to FIGS.
In the following description, the mounting structure of the rear right seat A will be described, but the rear center seat B and the rear left seat C are configured to be the same as or symmetrical to the rear right seat A.
[0029]
FIG. 4 is a front view showing the internal structure of the seat back 32 of the rear seat 33 (rear right seat A), and FIG. 5 is a right side view thereof. The frame of the seat back 32 reduces weight and facilitates molding. For the purpose, a plurality of wire frames 35 are combined.
[0030]
Hook portions 36 and 36 are provided on the upper left and right sides of the wire frame 35 as attachment means using the same material as the wire frame 35. These hook portions 36, 36 are for attaching the seat back 32 to the vehicle body behind the seat.
[0031]
As shown in FIGS. 4 and 5, each of these hook portions 36 is formed by connecting one inverted L-shaped portion 36a on one side and an inverted L-shaped portion 36b on the other side integrally with a connecting portion 36c, for a total of 4 The two joint portions 36d are fixed to the wire frame 35 by welding (bonding fixation).
[0032]
Further , hook portions 37 and 38 as insertion means are provided on the left and right sides of the wire frame 35 using the same material as the wire frame 35.
As shown in FIGS. 4 and 5, these hook portions 37 and 38 are formed in a substantially U shape, and a total of four joint portions 37 a and 38 a are fixed by welding (bonding fixation) to the wire frame 35. These hook portions 37 and 38 are configured so as to be inserted from above into the engagement holes formed in the kick-up portion 10 or the rear floor 8.
[0033]
6 is an enlarged view of the main part of FIG. 2 (portion for attaching the hook part 36), FIG. 7 is an exploded perspective view thereof, and FIG. 8 is a plan view showing the hook part 36 attached thereto. Correspondingly, a recess 23 b is formed in the front end bent portion 23 a of the package tray 23.
[0034]
Further , the package member front 24 is integrally formed with a projecting portion 24a projecting forward in the front-rear direction of the vehicle corresponding to the above-described hook mounting site, and the hook portion 36 is directed downward from above to the projecting portion 24a. And a through structure that extends forward from the left and right end portions of the through hole 40 having a predetermined length in the vehicle width direction and moves the hook portion 36 forward and locks it in the event of a collision. Groove portions 41 and 41 are provided.
[0035]
Further, a bracket 42 is joined and fixed to the lower surface portion of the package member front 24 corresponding to the above-described hook portion mounting portion.
The bracket 42 has a main surface 42a and a bent piece 42b that is integrally bent downward from the front end of the main surface 42a. The formation of the bent piece 42b improves the rigidity of the bracket 42 itself. I am trying.
[0036]
Further, the main surface 42a of the bracket 42 protruding portion 24a side of the through-hole 40 of the package member 24-and bored a through-hole 43 and the groove 44 so as to correspond to the groove 41, the groove 44 between In this case, a claw portion 45 is integrally formed as a restricting portion for preventing the hook portion 36 from projecting downward and moving back to the groove portions 41 and 44 and then returning backward.
[0037]
Furthermore, as shown in FIGS. 7 to 9, as an example of a spacer which breaks at a predetermined or more impact load between the hook portion 36 has been inserted into the through holes 40 and 43 through holes 40 and 43 non A bush 46 made of metal, for example, synthetic resin, is interposed.
[0038]
As shown in FIGS. 10 and 11, the bush 46 includes a cylindrical portion 48 having a through hole 47 into which the hook portion 36 is inserted, a seat portion 49 placed on the upper surface of the protruding portion 24a of the package member front 24, In the middle of the seat portion 49 in the vehicle width direction, there are provided knob portions 50 and 50 for improving assemblage that also serve as reinforcement integrally formed on both front and rear portions of the through hole 47.
[0039]
Then, by appropriately setting the type of the synthetic resin constituting the bush 46, the thickness of the seat portion 49, and the length from the hole edge of the through hole 47 to the front end of the seat portion 49, the arrow β in FIGS. The portion to be shown is configured to be broken by a predetermined impact load or more.
[0040]
Moreover, the hook portion 36 as an attaching means for attaching the seat back 32 of the rear seat 33 to the vehicle body behind the seat (see the package member front 24 and the bracket 42) is provided from the rear as shown in FIGS. When the collision load is applied, the curved portions 36e and 36e as impact absorbing means for absorbing the impact are integrally bent. In this embodiment, as shown in FIG. 4, the above-mentioned curved portions 36e and 36e are formed by integrally forming a horizontal U-shaped portion on one side of the hook portion 36 and the inverted L-shaped portions 36a and 36b on the other side. It is integrally formed.
[0041]
6 to 9, only the structure on the vehicle body side corresponding to one of the upper left and right hook portions 36, 36 of the seat back 32 shown in FIG. The structure on the vehicle body side corresponding to the other is the same as the structure shown in FIGS. In the figure , F indicates the front of the vehicle and R indicates the rear of the vehicle.
[0042]
The effect | action of the mounting structure of the vehicle seat comprised in this way is demonstrated below.
In a normal time when the collision load does not act, a non-metallic material (this embodiment) is provided between the metal hook portion 36 formed of the same material as the wire frame 35 and the package member front 24 and the bracket 42 as the vehicle body. In the example, since the bush 46 formed of synthetic resin is interposed, even if the vehicle body vibrates due to vehicle running or the like, it is possible to prevent noise from being generated due to contact between metals.
[0043]
On the other hand, when a heavy load is placed in the luggage compartment 27 shown in FIG. 3 and the vehicle is rear-projected, the load moves forward, and the load moves through the opening 34 to the seat of the rear seat 33. This seat back 32 is attached to the vehicle body in the above-described configuration. Therefore, when an impact load exceeding a predetermined value is input, the portion indicated by the arrow β of the bush 46 in FIGS. After being broken, the hook portion 36 moves forward along the groove portions 41 and 44 from the through holes 40 and 43, and is then locked at the front end of the groove portion 41 of the package member front 24. At this time, the connecting portion 36 c of the hook portion 36 moves between the bent piece 42 b of the bracket 42 and the claw portion 45 because of the relationship with the forward fulcrum of the seat back 32.
[0044]
Next , the bending portion 36e as the impact absorbing means of the hook portion 36 extends to absorb the impact, and after the impact absorption, the hook portion 36 tries to return to the rear by the reaction. Since the part 36c is locked by the claw part 45 as a restricting part, the hook part 36 can be prevented from coming off.
[0045]
The vehicle seat mounting structure of the above-described embodiment includes an opening 34 between the rear seat 33 and the luggage compartment 27 at the rear of the rear seat 33, and the seat back 32 of the rear seat 33 is attached via mounting means (see hook portion 36). A vehicle seat mounting structure that is mounted on a vehicle body (see package member 22) behind the seat, and that absorbs shock when a collision load from the rear acts on the mounting means (see hook portion 36). Absorbing means (refer to the bending portion 36e) is provided.
[0046]
According to this configuration, since the mounting means (see the hook portion 36) is provided with the impact absorbing means (see the curved portion 36e), the impact of the luggage or the like from the rear at the time of the rear impact of the vehicle without causing deterioration of the vehicle body weight. The load can be absorbed.
[0047]
The seat back 32 of the rear seat 33 includes a seat frame (see the wire frame 35), and the seat frame (see the wire frame 35) is mounted on the vehicle body (package member) behind the seat 33 via attachment means (see the hook portion 36). 22), and the shock absorbing means of the mounting means (see hook portion 36) is set to a curved portion 36e that absorbs shock when a collision load from the rear is applied.
According to this configuration, it is possible to reliably absorb the impact load from the rear by the curved portion 36e constituting the impact absorbing means.
[0048]
Further, the seat frame is set to the wire frame 35.
According to this configuration, it is possible to configure the impact absorbing means (see the curved portion 36e) with a simple structure by utilizing the ease of forming the wire frame 35 without causing deterioration in weight.
[0049]
In addition, a hook portion 36 is formed at the wire tip of the wire frame 35, and a through hole 40 into which the hook portion 36 is inserted into the vehicle body member (see the package member 22), and from the end portion of the through hole 40 toward the front. It is provided with a groove portion 41 that extends and locks by moving the hook portion 36 forward at the time of collision.
According to this configuration, the hook portion 36 at the tip of the wire in the wire frame 35 can be reliably locked to the vehicle body member (see the package member 22) when an impact load is applied.
[0050]
The through hole 40 has a predetermined length in the vehicle width direction, and protrudes downward between the groove portions 41 and 41 extending forward from both ends of the through hole 40 so that the hook portion 36 is formed in the groove portion 41. A restricting portion (refer to the claw portion 45) is provided to prevent returning to the rear after moving to.
[0051]
According to this configuration, it is possible to prevent the hook portion 36 from coming off due to the return of the seat back 32 when the impact load is applied, by the claw portion 45 serving as the restriction portion.
[0052]
Further, a spacer (see push 46) that is broken by a predetermined or higher impact load is interposed between the hook portion 36 inserted into the through hole 40 and the through hole 40.
According to this configuration, it is possible to prevent the generation of noise due to contact between the hook portion 36 and the vehicle body member (see the package member 22) in a normal state without deteriorating the locking state of the hook portion 36 during the collision action. it can.
[0053]
FIG. 12 shows another embodiment of the vehicle seat mounting structure. In the embodiment shown in FIG. 4, the curved portion 36e is formed only on the hook portion 36 on one side of the upper and left sides of the wire frame 35 of the seat back 32. In this embodiment shown in FIG. 12, curved portions 36e are integrally formed on the hook portions 36, 36 on one side and the other side on the upper left and right sides of the wire frame 35, respectively.
[0054]
Also in this embodiment shown in FIG. 12, other configurations, operations, and effects are almost the same as those in the previous embodiment. Therefore, the same parts in FIG. Description is omitted.
[0055]
13 shows open another example of the mounting structure of a vehicle seat, in the embodiment shown in FIG. 5, the hook portion 36 made of the same material as the wire frame 35 at the top left and right sides of the wire frame 35 of the seat back 32, In this embodiment shown in FIG. 13, the seat frame of the seat back 32 is set to a seat frame 51 made of a rigid pipe, and the above-mentioned bracket 52 provided on the seat frame 51 is welded to the bracket 52 by means such as welding means. A similar hook portion 36 is provided, and a lower hook portion 37 is attached to the lower portion of the seat frame 51.
[0056]
In this embodiment shown in FIG. 13 as well, the other configurations, operations, and effects are almost the same as those of the previous embodiment. Therefore, in FIG. Description is omitted.
[0057]
In the correspondence between the configuration of the present invention and the above-described embodiment,
The hook support member on the vehicle body side of the present invention corresponds to the package member 22,
Similarly ,
The restriction portion corresponds to the claw portion 45,
The spacer corresponds to the synthetic resin bush 46 (resin member)
The present invention is not limited to the configuration of the above-described embodiment.
[0058]
For example, in the above-described embodiment, the structure in which the seat back 32 is not tilted is illustrated, but the structure for mounting the vehicle seat having the above-described configuration is also adopted for the structure in which the seat back 32 is tilted on the seat cushion 31. Can do.
[0059]
【The invention's effect】
According to the present invention, the hook portion that attaches the seat back of the rear seat to the vehicle body behind the seat is provided with the curved portion that absorbs an impact when a collision load from the rear is applied, so that the weight of the vehicle body is not deteriorated. effect there can absorb the impact load, such as baggage from the rear is, also, since setting the seat frame to the wire frame, without causing deterioration of the weight by using the molding easiness of the wire frame There is an effect that the curved portion can be easily formed.
[Brief description of the drawings]
FIG. 1 is a plan view showing a rear body structure of a vehicle with a floor member omitted.
FIG. 2 is a perspective view showing a rear vehicle body structure.
FIG. 3 is a side view showing a mounting structure for a vehicle seat.
FIG. 4 is a front view showing an internal structure of a seat back.
FIG. 5 is a side view showing an internal structure of a seat back.
FIG. 6 is a perspective view showing a vehicle body structure behind a seat.
FIG. 7 is an exploded perspective view showing a seat mounting structure.
FIG. 8 is a plan view showing a seat mounting structure.
9 is a cross-sectional view taken along line DD in FIG.
FIG. 10 is a plan view of a spacer.
11 is a cross-sectional view taken along line EE in FIG.
FIG. 12 is a front view showing another embodiment of the hook portion.
FIG. 13 is a side view showing another example of a seat frame.
[Explanation of symbols]
22 ... Package member ( hook support member on the vehicle body side )
27: Loading room 32 ... Seat back 33 ... Rear seat 34 ... Opening 35 ... Wire frame (seat frame)
36 ... hook portion 36e ... curved portion 40 ... through hole 41 ... groove 45 ... claw portion (regulating portion)
46 ... Bush (spacer)

Claims (4)

An opening between the rear seat and the rear seat rear portion of the luggage compartment, a mounting structure of a vehicle seat attached to the body of the seat rear via a hook portion seat back of the rear seat,
The hook part is provided with a curved part that absorbs an impact when a collision load from the rear is applied ,
The seat back of the rear seat includes a seat frame composed of a wire frame,
The seat frame is attached to the vehicle body behind the seat via the hook portion,
Forming the hook at the wire tip of the wire frame;
The hook support member on the vehicle body side that supports the hook part is provided with a through hole into which the hook part is inserted,
The curved portion is formed such that a wire frame on the vehicle front side from the hook portion extends to the left and right in the left and right vehicle width directions along the rear surface of the seat back, respectively. <Br / > Vehicle seat mounting structure. The vehicle seat mounting structure according to claim 1, further comprising a groove portion that extends forward from an end portion of the through hole and moves and hooks the hook portion forward during a collision . The through-hole has a predetermined length in the vehicle width direction, and protrudes downward between the groove portions extending forward from both ends of the through-hole so that the hook portion moves to the groove portion and then returns to the rear. The vehicle seat mounting structure according to claim 2, further comprising a restriction portion for preventing the vehicle seat. The vehicle seat according to claim 2 or 3, wherein a spacer that is ruptured by an impact load of a predetermined level or more is interposed between the hook portion inserted into the through hole and the through hole. mounting structure.

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