JP6050294B2 - Vehicle seat support structure - Google Patents

Description

  The present invention relates to a vehicle seat support structure.

Most vehicle seats are rigidly supported on the vehicle floor. Although vibrations in various frequency ranges occur in vehicles, if vibrations such as engine idling vibrations and running vibrations that are close to the natural frequency of the vehicle seats are input to the floor of the vehicle body, the cause of the vehicle seats vibrating It is easy to become.
For this reason, as a vehicle seat support structure for coping with this, a structure in which an elastic body such as a rubber member is interposed between a floor portion in a vehicle interior and a seat body has been devised (for example, Patent Document 1). reference).

  In the seat support structure described in Patent Document 1, the left and right side frame portions of the seat body are attached to the left and right movable rails, which are slidably supported by the fixed rails in the passenger compartment, via elastic bodies, respectively. Yes. Specifically, elastic bodies are attached to the front and rear positions below the left and right side frame portions of the seat body, and the front and rear positions of the left and right side frame portions are respectively attached to the movable rails via the elastic bodies.

International Publication No. 2014/007011

  By the way, in the vehicle seat, the seat belt anchor of the seat belt device is attached to the side frame portion on the inner side in the vehicle width direction of the seat body. When the impact load is input to the vehicle, the occupant support load is input to the seat belt anchor via the webbing for restraining the occupant. Therefore, a large load acts on the side frame portion on the inner side in the vehicle width direction that supports the seat belt anchor through the seat belt device when an impact load is input.

  In the conventional seat support structure, an elastic body for reducing vibration is interposed between the side frame portion on the inner side in the vehicle width direction of the seat body and the movable rail. Therefore, in the conventional seat support structure described above, when a passenger's support load acts on the side frame portion on the inner side in the vehicle width direction of the seat body through the seat belt anchor, the load can be concentrated on the elastic body portion. As a countermeasure, elastic bodies and surrounding structures are made large and strong. However, when the elastic body and surrounding structures are enlarged, there is a concern that the seat support will occupy the interior of the vehicle and the convenience and comfort of the vehicle will be impaired.

  Accordingly, the present invention is intended to provide a seat support structure for a vehicle that can reduce the size of the seat support and improve the convenience and comfort of the passenger compartment.

In the vehicle seat support structure according to the present invention, in order to solve the above-described problem, the vehicle width direction is fixedly installed substantially along the vehicle body longitudinal direction on the floor portion (for example, the floor portion 3 of the embodiment) in the vehicle interior. A pair of outer and inner fixed rails (for example, the fixed rail 15 of the embodiment) and a pair of movable rails on the outer and inner sides in the vehicle width direction that are slidably held on the outer and inner fixed rails ( For example, the movable body 17 of the embodiment and the seat main body (for example, the side rail portions on the outer side and the inner side in the vehicle width direction (for example, the side frame portions 13R and 13L of the embodiment) attached to the corresponding movable rail. The seat main body 10-a) of the embodiment and the seat belt anchor (for example, the seat belt anchor of the embodiment) coupled to the side frame portion of the seat main body in the vehicle width direction. 9), wherein the elastic body from the seat body is interposed load transmission path to said movable rail (e.g., an elastic body 25) of the embodiment, the seat support structure of a vehicle equipped with, of the seat body Each of the side frame portions on the outer side and the inner side in the vehicle width direction includes an upper frame block (for example, the upper frame blocks 13RU, 13LU in the embodiment) and a lower frame block (for example, an implementation) positioned below the upper frame block. Lower frame blocks 13RL, 13LL), and the side frame portion on the outer side in the vehicle width direction, with the elastic body interposed between the upper frame block and the lower frame block , the lower frame block is supported in the vehicle width direction outer side of the movable rail, said side frame portions in the vehicle width direction inner side, the upper frame block and previous Wherein in a state where the upper frame blocks bound together the lower frame block, the lower frame block is supported in the vehicle width direction inner side of the movable rail the elastic body without interposed between the lower frame block I did it.

  Accordingly, when vibration in a predetermined frequency range is input to the floor portion, in the seat, the vibration of the seat body is reduced by the elasticity of the elastic body interposed in the load transmission path on the outer side in the vehicle width direction. In addition, when an occupant's support load acts on the seat belt anchor when an impact load is input, the support load is passed through a load transmission path on the vehicle width direction inner side where no elastic body is interposed. And the floor.

A pair of left and right seats are arranged in the vehicle interior so as to be separated in the vehicle width direction, and a passenger can pass through between the ends of the pair of left and right seats on the floor in the vehicle interior in the vehicle width direction. A passage (for example, the passage 50 of the embodiment) is provided, and the side frame portion on the inner side in the vehicle width direction of each of the left and right seats does not interpose the elastic body on the movable rail on the inner side in the vehicle width direction It may be supported.
In this case, the seat support portion on the inner side in the vehicle width direction of the left and right seats can be reduced in size, so that the width of the passage between the left and right seats can be secured wider and passengers can pass through easily.

In the vehicle interior, a pair of left and right seats are arranged close to the vehicle width direction, and the side frame portion on the inner side in the vehicle width direction of each of the left and right seats does not interpose the elastic body in the vehicle width direction. You may make it support by the said movable rail inside.
In this case, the inner side in the vehicle width direction of the left and right seats is rigidly supported by the fixed rail and the floor without using an elastic body, so that the load of passengers and luggage acts on the inner side of the seat body in the vehicle width direction. Even if there is, it becomes difficult for the seat body to incline inward in the vehicle width direction. For this reason, for example, it can be prevented that the seat backs of the left and right sheets interfere with each other and vibrations are transmitted from one sheet to the other sheet.

  According to the present invention, the elastic body is interposed only in the load transmission path on the outer side in the vehicle width direction of the seat, and the elastic body is not interposed in the load transmission path on the inner side in the vehicle width direction. The fixed rail and the vehicle body are restrained by the elastic body of the load transmission path on the outer side in the vehicle width direction, and the support load of the occupant through the seat belt anchor is passed through the load transmission path on the inner side in the vehicle width direction where no elastic body is interposed. It can be supported on the floor. Therefore, according to the present invention, it is not necessary to increase the size of the seat support portion on the inner side in the vehicle width direction, and as a result, it is possible to improve convenience and comfort in the passenger compartment.

It is a perspective view which shows the vehicle interior of the vehicle which concerns on one Embodiment of this invention. It is a perspective view which shows the sheet | seat support part which concerns on one Embodiment of this invention. It is sectional drawing corresponding to the III-III cross section of FIG. 2 of the sheet | seat support part which concerns on one Embodiment of this invention. It is a left view of the sheet | seat support part which concerns on one Embodiment of this invention. It is a perspective view which shows the vehicle interior of the vehicle which concerns on other embodiment of this invention.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the drawings, the arrow FR indicates the front of the vehicle 1, the arrow UP indicates the upper side of the vehicle 1, the arrow LH indicates the left side of the vehicle 1, and the arrow RH indicates the right side of the vehicle 1. In the following description, unless otherwise specified, front, rear, upper, lower, left, and right mean front, rear, upper, lower, left, and right with respect to the vehicle 1. To do.

FIG. 1 is a view showing vehicle seats 10A and 10B (hereinafter referred to as “seats 10A and 10B”) installed in the passenger compartment 1a and their support portions.
The vehicle 1 according to this embodiment is a minivan type vehicle including a plurality of rows of seats in the front-rear direction on the floor portion 3 in the passenger compartment 1a. FIG. 1 shows only the second row of sheets 10A and 10B. Further, the second row of seats 10A and 10B are installed on the floor portion 3 with a predetermined distance between the right and left sides in the vehicle width direction. A passage 50 through which an occupant can pass is provided between the ends of the pair of seats 10A and 10B on the floor portion 3 on the inner side in the vehicle width direction.
The seats 10A and 10B are formed symmetrically with respect to the left and right of the vehicle body, but the basic structures are the same. Therefore, in the following, the right sheet 10A and its support structure will be described in detail, and detailed description of the left sheet 10B and its support structure will be omitted.

FIG. 2 is a view showing the skeleton of one sheet 10A and its supporting portion. 3 is a view showing a cross section corresponding to the III-III cross section of FIG. 2, and FIG. 4 is a view showing the left side surface of the skeleton of one sheet 10A and its supporting portion.
In the seat 10A, a seat back 12 that supports the waist and back of the occupant is tiltably coupled to a rear end portion of the seat cushion 11 that supports the buttocks and thighs of the occupant. As shown in FIGS. 2 to 4, the seat cushion 11 has a pair of side frame portions 13 </ b> R and 13 </ b> L extending along the longitudinal direction of the vehicle body. One side frame portion 13R is disposed at an outer end portion (right end portion) in the vehicle width direction of the seat 10A, and the other side frame portion 13L is an end portion (left end portion) in the vehicle width direction of the seat 10A. Part).
In this embodiment, the seat main body 10-a of the seat 10A is constituted by the side frame portions 13R and 13L and the upper seat component.

The side frame portion 13R on the outer side in the vehicle width direction and the side frame portion 13L on the inner side in the vehicle width direction have different structures. The side frame portion 13R on the outer side in the vehicle width direction includes an upper frame block 13RU that supports a seat pan (not shown) and a seat back 12, and a lower frame block 13RL that is positioned below the upper frame block 13RU. The frame block 13RU and the lower frame block 13RL are connected to each other via a pair of anti-vibration blocks 14 and 14, which will be described later.
On the other hand, the side frame portion 13L on the inner side in the vehicle width direction has an upper frame block 13LU and a lower frame block 13LL, similar to the side frame portion 13R on the outer side in the vehicle width direction. The lower frame block 13LL is integrally coupled by welding or the like.

  A pair of fixed rails 15 and 15 are fixedly installed on the floor 3 in the passenger compartment 1a along the longitudinal direction of the vehicle body. The fixed rails 15 and 15 are spaced apart from each other on the outer side and the inner side in the vehicle width direction, and the fixed rails 15 and 15 are respectively formed on the side frame portion 13R on the outer side in the vehicle width direction and the side frame portion 13L on the inner side in the vehicle width direction. It is located almost directly below. Each fixed rail 15 is formed with a guide groove 16 that opens upward along the longitudinal direction of the vehicle body, and a movable rail 17 is slidable in the longitudinal direction of the vehicle body and is prevented from coming off vertically in the guide groove 16. Is held by.

  The movable rail 17 is disposed inside the corresponding fixed rail 15 and is slidably engaged with the inside of the fixed rail 15, and above the fixed rail 15 through the guide groove 16 from the rail main body 17 a. And a pedestal portion 17b that protrudes toward the center. Although a detailed description is omitted here, a slide lock mechanism (not shown) for locking the front / rear operation position of the seat 10A (seat body 10-a) is provided between the rail body portion 17a and the corresponding fixed rail 15. Is provided.

  The lower ends of the side frame portions 13R and 13L of the seat body 10-a are fastened and fixed to the upper portion of the pedestal portion 17b of each movable rail 17. Specifically, the lower frame blocks RL and LL of the side frame portions 13R and 13L are overlaid on the base portions 17b of the movable rails 17 on the outer side and the inner side in the vehicle width direction, respectively. Are fastened to the movable rail 17 by bolts 18.

  A base end of a seat belt anchor 19 (see FIG. 2) of the seat belt device is coupled to a rear edge portion of the side frame portion 13L (upper frame block LU) on the inner side in the vehicle width direction. A buckle 21 to which a tongue plate 20 (see FIG. 1) is attached and detached is attached to the front end of the seat belt anchor 19. The tongue plate 20 is attached to the webbing 22 of the seatbelt device pulled out from the pillar on the side wall of the vehicle body.

Here, the anti-vibration block 14 that connects the upper frame block 13RU and the lower frame block 13RL to the side frame portion 13R on the outer side in the vehicle width direction is fitted and fixed to the upper wall of the lower frame block 13RL as shown in FIG. An outer cylinder 23, a collar 24 fastened and fixed to the lower wall of the upper frame block 13RU, and a rubber annular elastic body 25 coupled to the outer cylinder 23 and the collar 24 by vulcanization adhesion or the like. I have. 3 is a bolt for fastening and fixing the collar 24 to the upper frame block 13RU, and 27 is sandwiched and locked between the head of the bolt 26 and the collar 24, and is elastic. It is a displacement regulating flange that regulates the displacement of the body 25 in the shearing direction (the direction along the axis of the bolt 26).
In addition, the pair of anti-vibration blocks 14 and 14 are spaced apart from the front edge and the rear edge of the upper frame block 13RU and the lower frame block 13RL.

The elastic body 25 of the anti-vibration block 14 is interposed between the upper frame block 13RU and the lower frame block 13RL on the outer side in the vehicle width direction, and reduces vibration in a predetermined frequency range input to the floor portion 3 in the passenger compartment 1a. To do. In the case of this embodiment, among the vibrations input to the floor portion 3, the elastic body 25 is tuned particularly for the following vibrations (1) and (2).
(1) Engine idling vibration (vibration in the vibration frequency range of 20 to 25 Hz)
(2) Driving vibration (vibration in the vibration frequency range of 15 to 20 Hz)
Specifically, the elastic body 25 is tuned so that the resonance frequency regions of the sheets 10A and 10B are lower than the vibration frequency regions of the above (1) and (2).

  In the seat support structure according to this embodiment, the elastic body 25 is interposed between the upper frame block 13RU and the lower frame block 13RL on the outer side in the vehicle width direction of the respective seats 10A and 10B. The vibration in the predetermined frequency range can be absorbed by the elastic deformation of the elastic body 25, and the vibrations of the sheets 10A and 10B can be reduced. In particular, in this seat support portion structure, the side frame portion 13L on the inner side in the vehicle width direction is rigidly supported by the movable rail 17 without the elastic body 25 interposed in the load transmission path. Since the elastic body 25 is interposed in the outer side frame portion 13R, the vibration of the seats 10A and 10B (vibration in the torsional direction of the vehicle body) starting from the inner side in the vehicle width direction is efficiently reduced by the elastic body 25. be able to.

  Further, in the seat support structure according to this embodiment, the side frame 13L on the inner side in the vehicle width direction is rigidly supported by the movable rail 17 without the elastic body 25 interposed in the load transmission path. Even when an impact load is input during traveling of the vehicle and the support load of the occupant acts on the seat belt anchor 19 via the webbing 22 of the seat belt device, the load is efficiently supported on the floor portion 3 of the vehicle. Can do. Therefore, when this structure is adopted, it is not necessary to increase the size of the support portion of the seats 10A and 10B on the inner side in the vehicle width direction for reinforcement, so that convenience and comfort in the vehicle compartment can be improved. .

  Further, as in this embodiment, the pair of left and right seats 10A and 10B are arranged apart from each other in the vehicle width direction, and the occupant's seat between the left and right seats 10A and 10B on the floor portion 3 on the inner side in the vehicle width direction. In a vehicle provided with a passage 50 capable of passing through, the width of the passage 50 between the left and right seats 10A, 10B can be reduced because the seat support portion on the inner side in the vehicle width direction of the left and right seats 10A, 10B can be reduced. It can be secured more widely. Therefore, by adopting this structure, it is possible to easily pass the occupant between the left and right seats 10A and 10B.

FIG. 5 is a diagram illustrating seats 110A and 110B and a support portion thereof of a vehicle 101 according to another embodiment.
In a vehicle 101 according to another embodiment shown in FIG. 5, a pair of left and right seats 110A and 110B are disposed in a vehicle interior 101a in the vicinity of the vehicle width direction. The right seat 101A is formed wide so that the right occupant and the center occupant can be seated side by side. That is, the right seat 110A has the auxiliary seat 60 for the center occupant connected to the left side of the main body seat.
Also in this other embodiment, the left and right seats 110A and 110B are provided with the elastic body 25 only in the load transmission path on the outer side in the vehicle width direction, and the elastic body is provided in the load transmission path on the inner side in the vehicle width direction. It is not done.

  In the case of this other embodiment, the inner side in the vehicle width direction of the left and right seats 110A, 110B is rigidly supported by the fixed rail 15 and the floor portion 3 without an elastic body, and therefore the auxiliary seat 60 of the right seat 110A. Even if an occupant sits down or places a heavy load, the right seat 110A is less likely to tilt inward in the vehicle width direction. In addition, even when an occupant sits on the inner edge of the left seat 110B in the vehicle width direction or places a heavy load, the left seat 110B hardly tilts inward in the vehicle width direction. Become. For this reason, it is possible to prevent the seat backs from interfering with each other due to the inclination of the left and right sheets 110A and 110B, and vibrations from being transmitted from one sheet to the other sheet.

In addition, this invention is not limited to said embodiment, A various design change is possible in the range which does not deviate from the summary. For example, in the embodiment described above, the elastic body 25 is interposed between the upper frame block 13RU and the lower frame block 13RL on the side frame portion 13R on the outer side in the vehicle width direction. As long as it is in the load transmission path leading to the outer side frame portion and the movable rail on the outer side in the vehicle width direction, it may be interposed in another part such as between the side frame and the movable rail.
In the above embodiment, the second row seat of the vehicle has been described as an example, but the seat to which the support structure is applied may be a third row seat or a first row seat.

3 ... Floor portion 10A, 10B, 110A, 110B ... Seat 10-a ... Seat body 13R, 13L ... Side frame portion
13RU, 13LU ... Upper frame block
13RL, 13LL ... lower frame block 15 ... fixed rail 17 ... movable rail 19 ... seat belt anchor 25 ... elastic body 50 ... passage

Claims (3)

A pair of fixed rails on the outer side and the inner side in the vehicle width direction, which are fixedly installed substantially along the vehicle body longitudinal direction on the floor portion in the vehicle interior;
A pair of movable rails on the outer and inner sides in the vehicle width direction that are slidably held by the fixed rails on the outer and inner sides in the vehicle width direction;
A seat body attached to the movable rail to which each side frame portion on the outside in the vehicle width direction corresponds to the inside;
A seat belt anchor coupled to a side frame portion on the inner side in the vehicle width direction of the seat body;
An elastic body interposed in a load transmission path from the seat body to the movable rail, and a vehicle seat support structure,
Each of the side frame portions on the vehicle width direction outer side and the inner side of the seat body includes an upper frame block, and a lower frame block positioned below the upper frame block,
Said side frame portions in the vehicle width direction outer side is supported on the in a state where the elastic member is interposed, the lower frame block outer side in the vehicle width direction of the movable rail between the lower frame block and the upper frame block And
It said side frame portions in the vehicle width direction inner side in a state bound to the upper frame block and the lower frame block the elastic body without interposed integrally between the lower frame block and the upper frame block The vehicle seat support structure, wherein the lower frame block is supported by the movable rail on the inner side in the vehicle width direction.   A pair of left and right seats are arranged in the vehicle interior so as to be separated in the vehicle width direction, and a passenger can pass through between the ends of the pair of left and right seats on the floor in the vehicle interior in the vehicle width direction. A passage is provided, and the side frame portion on the inner side in the vehicle width direction of each of the left and right seats is supported by the movable rail on the inner side in the vehicle width direction without interposing the elastic body. The vehicle seat support structure according to claim 1.   A pair of left and right seats are arranged in the vehicle interior adjacent to each other in the vehicle width direction, and the side frame portion on the inner side in the vehicle width direction of each of the left and right seats is in the vehicle width direction inner side without interposing the elastic body. The vehicle seat support structure according to claim 1, wherein the vehicle seat support structure is supported by the movable rail.

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