JP2012076496A - Vibration control structure for vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent interference between a member on the seat-body side and a member on the floor side across an elastic body having anti-vibration function even if the elastic body deteriorates.SOLUTION: The vibration control structure 10 for a vehicle seat is provided in each support structure (each fastening part 20 between each lower rail 5B of lateral slide rails 5 and an inner lower frame 4B) for supporting a seat body 1 on a floor F so as to suppress vibration to be transmitted from the member on the floor side (inner lower frame 4B) constituting the support structure to the member on the seat-body side (each lower rail 5B). The vibration control structure has: an inner-cylinder member 12 mounted on a member on the side of a seat-body; an outer-cylinder member 11 mounted on a member on the side of a floor; and an elastic body (vibration-absorbing rubber 13) that is interposed between both the cylinder members 11, 12 so as to elastically support the inner-cylinder member 12 with respect to the outer-cylinder member 11. Both the cylinder members 11, 12 are configured to be elastically connected to each other so as to be mutually movable in the axial direction of the cylinders by the vibration-absorbing rubber 13. The axial direction of the cylinders is set in the vertical direction of a seat.

Description

  The present invention relates to a vibration isolating structure for a vehicle seat. More specifically, the present invention relates to an anti-vibration structure for a vehicle seat that is provided in a support structure that supports a seat body with respect to a floor and suppresses vibrations transmitted from a floor-side member constituting the support structure to a seat body-side member.

  As this type of anti-vibration structure, one disclosed in Patent Document 1 below is known. This anti-vibration structure has a structure in which a plate-like anti-vibration rubber serving as an elastic body is interposed between a frame of the seat body and a support panel fixed on the floor.

Japanese Utility Model Publication No. 2-45840

  However, in the above-described conventional technology, since the anti-vibration rubber is provided between the seat body and the floor in the direction of gravity, the anti-vibration rubber is caused by the weight of the seat body as the anti-vibration rubber deteriorates. The members on the seat body side and the floor side member that are crushed in the direction of gravity and sandwich the anti-vibration rubber are pressed against each other by the action of vertical vibration, and it becomes easy to cause a problem such as generating abnormal noise. The present invention was devised as a solution to the above-mentioned problem, and the problem to be solved by the present invention is that the elastic body that has an anti-vibration function is deteriorated even if the elastic body is deteriorated. It is to make it difficult to cause interference between the member and the member on the floor side.

  1st invention is provided in the support structure which supports a seat main body with respect to a floor, The vibration isolating structure of the vehicle seat which suppresses the vibration transmitted from the floor side member which comprises this support structure to the member of the seat main body side A first member attached to the member on the seat body side, a second member attached to the member on the floor side, and interposed between both members, and the first member is the second member And an elastic body that elastically supports the member. One of the first member and the second member is formed in a cylindrical shape, the other is inserted into the cylinder, and an elastic body is coupled between the circumferential surfaces facing the inside and outside of each other. One and the other are elastically coupled to each other so as to be movable in the axial direction of the cylinder so that they do not interfere with each other in the axial direction of the cylinder. The axial direction of this cylinder is set to the seat vertical direction.

  According to the first invention, the first member and the second member are configured such that the axial direction of the cylinder that is elastically coupled to each other and is movable is set in the vertical direction of the sheet, so that the sheets are mutually seated. The relationship is such that they do not interfere with each other in the vertical direction. Therefore, even if the first member attached to the member on the seat body side is greatly pushed down in the direction of gravity with respect to the second member due to the weight of the seat body due to the deterioration of the elastic body. In addition, it is possible to adopt a configuration in which the member on the seat body side does not interfere with the member on the floor side. Thus, even if the elastic body deteriorates, it is possible to make it difficult to cause interference between the member on the seat body side and the member on the floor side where the elastic body is interposed.

  According to a second aspect of the present invention, in the first aspect, the seat body includes a seat back coupled to the rear portion of the seat cushion supported on the floor, the seat back includes the retractor of the seat belt device, and the seat. The webbing outlet is set on the shoulder on the outer side in the vehicle width direction of the back, and this anti-vibration structure for the vehicle seat supports the inner side of the seat cushion in the vehicle width direction against the floor. It is provided in the structure part.

Here, in the case where the seat belt device webbing outlet is set on the shoulder portion on the outer side in the vehicle width direction of the seat back, when the front collision of the vehicle occurs, a large input is applied to the side portion on the outer side in the vehicle width direction of the seat body. Since a load is applied, it is preferable that the outer side portion has a high structural strength.
According to the second aspect of the present invention, the seatback webbing pull-out opening is set on the shoulder of the seat back in the vehicle width direction, and the side portion of the seat cushion in the vehicle width direction with respect to the floor. Even if a seat belt device with such a seat back is set by providing a vehicle seat vibration-proofing structure in the structure that supports the vehicle seat, the vehicle seat is secured while ensuring the necessary strength. The anti-vibration structure can be suitably set.

  According to a third invention, in the first or second invention described above, one of the first member and the second member formed in a cylindrical shape is fixed to a floor-side member, and the inside of the one cylinder The other to be inserted into the cylinder is also formed in a cylindrical shape, and a bolt for fastening the other to the member on the seat body side can be inserted and fixed in the cylinder, and the vibration isolating structure for this vehicle seat is The slide rail provided between the seat body and the floor is provided at a fastening portion for fastening the slide rail to a member on the seat body side or a member on the floor side.

  According to the third aspect of the present invention, the vibration isolating structure for the vehicle seat is provided by providing the vehicle seat anti-vibration structure in the fastening portion that fastens the slide rail to the seat main body side member or the floor side member. The structure of a fastening part can be rationalized and these can be provided in a small space.

It is the perspective view which looked at the frame structure of the seat main part of Example 1 from the vehicle width direction outside. It is the perspective view which looked at the frame structure of the seat main part from the vehicle width direction inner side. It is a perspective view of the lower structure of a seat cushion. FIG. 4 is a sectional view taken along line IV-IV in FIG. 3.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated using drawing.

  First, the structure of the vehicle seat vibration-proof structure 10 (hereinafter referred to as the vibration-proof structure 10) according to the first embodiment will be described with reference to FIGS. The anti-vibration structure 10 of the present embodiment is provided in a support structure that supports the seat body 1 with respect to the floor F, and suppresses vibration transmitted from the floor-side member constituting the support structure to the seat body-side member. It has become. Here, as shown in FIGS. 1 to 2, the seat body 1 includes a seat back 2 serving as a backrest, a seat cushion 3 serving as a seating portion, and a pair of front and rear lateral slide rails extending in the vehicle width direction. 5 and a pair of left and right front and rear slide rails 6 extending in the vehicle front-rear direction.

  The seat cushion 3 includes a pair of left and right front and rear slide rails 6 installed on the floor F, a lower frame 4 (outer lower frame 4A and inner lower frame 4B) fixed to the top of each front and rear slide rail 6, and a lower frame. 4 is supported on the floor F via a pair of front and rear horizontal slide rails 5 fixed to the upper part of 4. The seat back 2 is connected to both side portions on the rear end side of the seat cushion 3 with a pair of left and right reclining devices 8 functioning as a rotation shaft device capable of stopping rotation. Yes.

  A retractor 7A of a three-point seat belt device 7 is built in the seat back 2, and the shoulder portion on the outer side in the vehicle width direction faces the upper side of the seat from the retractor 7A in the seat back 2. An outlet 7C is set for pulling out the webbing 7B fed out to the front side of the seat. Further, a buckle 7E for attaching a tongue 7D passed through the webbing 7B is connected to a side portion on the inner side in the vehicle width direction of the seat cushion 3, and a side portion on the outer side in the vehicle width direction of the seat cushion 3 is connected. The fixing tool 7F for fixing the end of the webbing 7B is connected.

  The seat body 1 has a configuration in which the seat belt device 7 is attached to the seat back 2, and when a frontal collision of the vehicle occurs when the seat belt is used, the vehicle width of the seat back 2 in which the outlet 7C of the webbing 7B is set. A large tensile load is input to the shoulder on the outer side in the direction, and a large load is applied to the outer side in the vehicle width direction of the entire seat body 1. Therefore, in this embodiment, although the details will be described later, the structure strength of the side portion of the seat body 1 on the outer side in the vehicle width direction is increased. Further, with respect to the seat body 1 having the above-described configuration, the vibration isolating structure 10 has a relatively small load when the large load is applied, and the lateral slide rails 5 and the lower frame 4 (inner lower frame 4B on the inner side in the vehicle width direction) ) And the fastening portion 20. Hereinafter, the specific configuration of the vibration-proof structure 10 will be described in detail together with the configuration of each part of the seat body 1.

  First, the structure of each part of the sheet body 1 will be described. As shown in FIGS. 1 to 2, the seat back 2 includes a back frame 2 </ b> F that forms a skeleton, an outer side frame 2 </ b> F <b> 1 and an inner side frame 2 </ b> F <b> 2 that form a skeleton on both sides of the seat back 2, and an upper portion of the seat back 2. The upper frame 2F3 forming the skeleton is integrally coupled to each other to form a reverse U-shape when viewed from the front. Both the outer side frame 2F1 and the inner side frame 2F2 are formed of vertically long steel plate members. Specifically, as shown in FIG. 1, the inner side frame 2 </ b> F <b> 2 has a configuration in which the front and rear edges thereof are bent toward the inside of the seat back 2, and the structural strength is increased. It has become. As shown in FIGS. 1 to 2, the outer side frame 2F1 is bent so that the cross-section thereof is a rectangular closed cross-sectional shape, and the structural strength of the outer side frame 2F1 is higher than that of the inner side frame 2F2. It has an enhanced configuration.

  The outer side frame 2F1 is formed longer than the inner side frame 2F2. The upper frame 2F3 is formed of a steel pipe member bent in an L shape, and an end portion bent toward the lower side in the figure in the vehicle width direction is coupled to an upper end portion of the inner side frame 2F2 and fixed integrally. The end portion on the side that extends straight outward in the vehicle width direction is penetrated by the upper end portion of the outer side frame 2F1 and is integrally coupled and fixed. A reinforcing pipe 2F4 made of two steel pipe members is bridged between the outer side frame 2F1 and the inner side frame 2F2 so as to straddle between them, and is integrally coupled to these and fixed. Has been.

  Further, the aforementioned outlet 7C of the seat belt device 7 is integrally coupled and fixed to the coupling portion between the upper frame 2F3 and the outer side frame 2F1. As a result, when the above-described frontal collision of the vehicle occurs, a large tensile load applied to the front side of the vehicle through the webbing 7B to the outlet 7C is supported by a strong force by the outer side frame 2F1 having the increased structural strength. ing.

  As shown in FIGS. 1 and 2, the seat cushion 3 includes a cushion frame 3 </ b> F that forms a skeleton on both sides of the seat cushion 3, an outer side frame 3 </ b> F <b> 1 and an inner side frame 3 </ b> F <b> 2, and the front of the seat cushion 3. The front frame 3F3 that forms the skeleton of each part is integrally connected to each other and formed in an inverted U shape in plan view. Both the outer side frame 3F1 and the inner side frame 3F2 are formed of steel plates that are long in the front-rear direction. Specifically, as shown in FIG. 1, the inner side frame 3 </ b> F <b> 2 has a configuration in which the upper and lower edges thereof are bent into the seat cushion 3, and the structure strength thereof is increased. . The outer side frame 3F1, as shown in FIG. 1 to FIG. 2, has a cross-sectional shape that is bent so as to have a rectangular closed cross-sectional shape, and has a structural strength that is higher than that of the inner side frame 3F2. It has an enhanced configuration.

  The front frame 3F3 is formed of a steel pipe member, and both ends thereof are integrally coupled and fixed to the front end portion of the inner side frame 3F2 and the front end portion of the outer side frame 3F1, respectively. And, between the outer side frame 3F1 and the inner side frame 3F2, a reinforcing pipe 3F4 made of a steel pipe member is bridged across the rear end portions, and is integrally coupled to and fixed thereto. Has been. Each of the reclining devices 8 described above is provided between a side portion on the rear end side of both side frames 3F1 and 3F2 of the cushion frame 3F and a side portion on the lower end side of both side frames 2F1 and 2F2 of the back frame 2F. And are integrally coupled and fixed to the respective side portions. These reclining devices 8 are normally held in a state where the backrest angle of the seat back 2 is fixed, and the fixed state is obtained by pulling up the operation lever 8A connected to the lateral side of the seat body 1 in the vehicle width direction. Is being solved.

  Further, as shown in FIGS. 1 to 3, the pair of front and rear horizontal slide rails 5 includes both the side frames 3F1 and 3F2 of the cushion frame 3F described above, and the lower frames 4 on the respective sides arranged below these parts. The outer lower frame 4A and the inner lower frame 4B are interposed between the outer lower frame 4A and the inner lower frame 4B. These lateral slide rails 5 are spanned between the outer lower frame 4A and the inner lower frame 4B, are extended in the vehicle width direction and fixed, and are slidable in the vehicle width direction with respect to the lower rail 5B. The upper rail 5A is fixed to the upper frame 5F and the lower ends of the side frames 3F1 and 3F2 of the cushion frame 3F are fixed to the upper portion of the cushion frame 3F. The locking device 5C can lock the slide of the upper rail 5A with respect to the lower rail 5B. The locking device 5C is normally held in a state in which the slide of the upper rail 5A is locked by urging, and the locked state is released by operating a release lever (not shown) provided on the seat body 1. It has become.

  As shown in FIGS. 1 to 3, the lower frame 4 constitutes a support structure for supporting the seat body 1 with respect to the floor F, and is formed of a pair of left and right steel plates arranged opposite to each other. The lower frame 4A and the inner lower frame 4B are configured. The outer lower frame 4A and the inner lower frame 4B are fixed to the upper portions of the upper rails 6A of the front and rear slide rails 6 disposed on the floor F in a pair of left and right, respectively. Each of the lower rails 5B of the horizontal slide rail 5 is bridged and fixed. The outer lower frame 4A and the inner lower frame 4B are configured such that the upper edge portion and the front and rear edge portions thereof are bent toward the sheet inner sides facing each other, and the structural strength is increased. It has become.

  1 and 2, the pair of left and right front and rear slide rails 6 extend on the floor F in the vehicle front-rear direction and are fixed in the vehicle front-rear direction, and the vehicle front-rear direction with respect to the lower rail 6B. An upper rail 6A that is assembled in a slidable state and has a lower end portion of the outer lower frame 4A and a lower end portion of the inner lower frame 4B fixed to the upper portion thereof, and a locking device 6C that can lock the slide of the upper rail 6A with respect to the lower rail 6B. And having. The locking device 6C is normally held in a state where the slide of the upper rail 6A is locked by urging, and the locked state is released by operating a release lever (not shown) provided on the seat body 1. It has become.

  By the way, as shown in FIG. 3, the connection between the upper edge portion of the inner lower frame 4B and the lower rails 5B of the lateral slide rail 5 is made at the fastening portions 20 shown in FIG. 20 is provided with an anti-vibration structure 10. Here, the inner lower frame 4B corresponds to a member on the floor side of the present invention, each lower rail 5B corresponds to a member on the seat body side of the present invention, and the lateral slide rail 5 corresponds to a slide rail of the present invention. Hereinafter, the structure of the said fastening part 20 and the vibration isolating structure 10 is demonstrated. As shown in FIG. 4, each fastening portion 20 includes a bolt 21 inserted into the bottom plate portion of each lower rail 5 </ b> B from above the seat and penetrating through the upper edge of the inner lower frame 4 </ b> B, and a tip into which the bolt 21 is inserted. It is comprised by the combination with the nut 22 with a seat screwed together by the part.

  Each anti-vibration structure 10 includes a cylindrical outer cylinder member 11, an inner cylinder member 12 that is formed in a cylindrical shape having a smaller cylinder diameter than the outer cylinder member 11 and is assembled in the cylinder of the outer cylinder member 11, and an outer cylinder An anti-vibration rubber 13 provided in a gap between the member 11 and the inner cylinder member 12 and integrally bonded to the inner peripheral surface of the outer cylinder member 11 and the outer peripheral surface of the inner cylinder member 12; It is composed of Here, the inner cylinder member 12 corresponds to the first member of the present invention, the outer cylinder member 11 corresponds to the second member of the present invention, and the vibration isolating rubber 13 corresponds to the elastic body of the present invention.

  The outer cylinder member 11 is inserted into a hole 4B1 formed in the upper edge of the inner lower frame 4B, with the cylinder axial direction oriented in the vertical direction of the seat, and the entire outer peripheral part thereof. Are welded to the inner lower frame 4B and fixed integrally. As a result, the inner cylinder member 12 can move in the axial direction (up and down direction of the cylinder) and the radial direction of the cylinder by the elastic force of the anti-vibration rubber 13 coupled between the inner cylinder member 11 and the outer cylinder member 11, respectively. It is in an elastically supported state.

  The fastening portions 20 for fastening the lower rails 5B of the lateral slide rail 5 to the inner lower frame 4B are provided as follows with respect to the vibration isolating structure 10. That is, each fastening portion 20 is inserted from the upper side of the seat so that the bolt 21 penetrates the bottom plate portion of each lower rail 5B in the cylinder of each inner cylinder member 12 in which the axial direction of the cylinder is directed in the vertical direction of the seat. A seated nut 22 is screwed into the tip of each bolt 21 that is inserted and inserted and penetrates downward of each inner cylinder member 12. Thereby, each inner cylinder member 12 and the bottom plate part of each lower rail 5B are held in the axial direction (the seat vertical direction) by the head 21A of each bolt 21 and the seat 22A of each seated nut 22 respectively. Connected together.

  Specifically, the inner cylinder member 12 is longer than the outer cylinder member 11, and in the state where the inner cylinder member 12 is coupled to the outer cylinder member 11 via the anti-vibration rubber 13, the upper and lower ends thereof are outside. The cylinder member 11 projects from the upper and lower sides of the sheet, and the upper end of the cylinder member 11 is provided so as to project further upward than the upper edge of the inner lower frame 4B. Thereby, each lower rail 5B of the horizontal slide rail 5 fastened to the upper part of the inner cylinder member 12 by the said fastening part 20 is a sheet up-down direction between those bottom-plate parts and the upper edge part of the inner lower frame 4B, respectively. In this state, a gap Ta is provided in the inner lower frame 4B. The gap Ta is secured by a resilient force of the anti-vibration rubber 13 even when a passenger is seated on the seat body 1.

  Therefore, the vibration transmitted from the floor F when the vehicle travels is absorbed by the vibration isolating structure 10 in the seat cushion 3 and the seat back 2 elastically supported by the inner lower frame 4B via the vibration isolating structure 10. It becomes difficult to be transmitted by being suppressed. Specifically, when the vibration is input so as to vibrate the inner cylinder member 12 with respect to the outer cylinder member 11 in the axial direction of the cylinder (the vertical direction of the seat), the bottom plate portion and the inner lower frame of each lower rail 5B. Due to the gap Ta provided between the upper edge of 4B, each lower rail 5B that moves integrally with the inner cylinder member 12 can be moved up and down so as not to interfere with the upper edge of the inner lower frame 4B. Yes. Further, when the vibration is input so as to vibrate the inner cylinder member 12 with respect to the outer cylinder member 11 in the radial direction of the cylinder, the anti-vibration rubber is provided between the outer cylinder member 11 and the inner cylinder member 12. Since 13 is interposed, the inner cylinder member 12 can be swung so as not to directly contact the outer cylinder member 11.

  Further, in the vibration isolating structure 10, the vibration isolating rubber 13 is aged (deteriorated) due to a long-term use or the like, and the inner cylinder member 12 is pushed down in the gravity direction with respect to the outer cylinder member 11 by the self-weight action of the seat body 1. Even if the inner cylinder member 12 does not interfere with the outer cylinder member 11 in the axial direction of the cylinder (the vertical direction of the seat), each lower rail 5B is connected to the inner lower frame 4B. Since the gap Ta is set between the two so as not to interfere with the upper edge portion and the movement is allowed to escape, the anti-vibration function can be exhibited so as not to interfere with these. The gap Ta, for example, easily adjusts the width in the vertical direction of the seat by increasing the length of the substantial cylinder of the inner cylinder member 12 and increasing the amount of protrusion from the outer cylinder member 11. be able to.

  By the way, the anti-vibration rubber 13 is formed in a ring shape interposed over the entire circumference of the gap between the outer cylinder member 11 and the inner cylinder member 12, and the outer peripheral surface and the inner peripheral surface thereof are respectively the outer cylinder. The inner circumferential surface of the member 11 and the outer circumferential surface of the inner cylinder member 12 are bonded to each other over the entire circumference and are firmly joined together. The shape of the anti-vibration rubber 13 may be such that a gap is formed in a part between the outer cylinder member 11 and the inner cylinder member 12, and an occupant sits on the seat body 1. However, what is necessary is just the structure provided with the damping performance which can support the load and can suppress the vibration transmitted from the floor F mentioned above. Further, the seated nut 22 of the fastening portion 20 is formed such that the diameter of the seat 22A protruding in a disk shape is larger than the inner diameter of the outer cylinder member 11, and when the seat body 1 is in a free state, the outer cylinder member 11 has a clearance Tb between the lower end of the vehicle 11 and the seating of the occupant on the seat body 1 widens the clearance Tb. The vibration transmitted from the floor F to the seat body 1 when the vehicle travels. Even if it receives, it is set as the relationship which does not interfere with the lower end part of the outer cylinder member 11. FIG.

  However, the seated nut 22 receives a strong tensile load in the direction in which the seat body 1 peels from the floor F (upward direction of the seat) due to occurrence of a frontal collision or a rearward collision of the vehicle. The seat 22 </ b> A is brought into contact with the lower end portion of the outer cylinder member 11 by being pulled upward by a strong force exceeding the elastic force of the anti-vibration rubber 13. Thereby, even if the seat body 1 receives a force in a direction in which the seat main body 1 is peeled off from the floor F with a strong force exceeding the elastic coupling force via the vibration isolating rubber 13, the seat 22 </ b> A of the seated nut 22 is at the lower end of the outer cylinder member 11. The sheet main body 1 can be prevented from being peeled off by abutting against the portion and exhibiting a supporting force.

  Thus, according to the vibration isolating structure 10 of the present embodiment, the outer cylinder member 11 and the inner cylinder member 12 are elastically coupled to each other via the vibration isolating rubber 13 so as to be relatively movable. The axial direction is set in the up-down direction of the seat so that they do not interfere with each other in the up-down direction of the seat. Therefore, the inner cylindrical member 12 attached to each lower rail 5B (member on the seat body side) of the lateral slide rail 5 is caused by the weight of the seat body 1 due to the aging (deterioration) of the vibration isolating rubber 13 (elastic body). Even if the inner cylinder member 12 is largely pushed down in the direction of gravity, each lower rail 5B (seat body side member) may be configured not to interfere with the inner lower frame 4B (floor side member). it can. Thus, even if the vibration isolating rubber 13 is aged (deteriorated), the lower rail 5B (member on the seat body side) intervening with the vibration isolating rubber 13 and the inner lower frame 4B (floor side member) cause interference. Can be difficult.

  In addition, in the case where the outlet 7C of the webbing 7B of the seat belt device 7 is set on the shoulder portion on the outer side in the vehicle width direction of the seat back 2, the side portion on the inner side in the vehicle width direction of the seat cushion 3 with respect to the floor F The anti-vibration structure 10 is provided in the structure part to be supported, so that the anti-vibration structure 10 is secured while ensuring the necessary strength even in the case where such a seat belt device 7 with the seat back 2 is set. Can be suitably set. Further, by providing the vibration isolation structure 10 at the fastening portion 20 that bolts each lower rail 5B (seat body side member) of the horizontal slide rail 5 to the upper edge portion of the inner lower frame 4B (floor side member), The structure of the vibration isolating structure 10 and the fastening part 20 can be rationalized, and these can be provided in a small space.

  As mentioned above, although embodiment of this invention was described using one Example, this invention can be implemented with various forms other than the said Example. For example, in the above-described embodiment, rubber (anti-vibration rubber 13) is exemplified as the elastic body constituting the vibration-proof structure of the vehicle seat of the present invention. However, the elastic body has the first member as the first member. Any structural member may be used as long as it has structural characteristics that can be elastically supported with respect to the member 2, and can be constituted by various elastic members such as a spring and a flexible resin. Moreover, in the said Example, the anti-vibration structure 10 was provided in the fastening part 20 which fastens each lower rail 5B (seat body side member) of the horizontal slide rail 5 to the inner lower frame 4B (floor side member). However, it may be provided at another location. That is, the vibration isolating structure for a vehicle seat according to the present invention suppresses vibrations transmitted from the floor side member constituting the support structure to the seat body side member in the support structure for supporting the seat body with respect to the floor. For example, in the above-described embodiment, between the upper rails 6A (floor side members) of the front and rear slide rails 6 and the lower frame 4 (members on the seat body side) or the side slide rails 5 Any support structure that supports the seat body 1 with respect to the floor F, such as between each upper rail 5A (floor side member) and the cushion frame 3F (seat body side member), can be applied anywhere. is there.

  Further, the vehicle seat vibration-proof structure of the present invention is not applicable to vehicle seats having slide rails, such as the horizontal slide rail 5 and the front and rear slide rails 6 in the above-described embodiment, and includes a slide rail. It can also be applied to vehicle seats that are not. Further, in the above-described embodiment, in the seat body 1 in which the retractor 7A of the seat belt device 7 is built in the seat back 2, the side opposite to the vehicle width direction outer side where the outlet 7C of the webbing 7B is set (the vehicle width direction inner side) However, in the configuration in which the seat belt device is not attached to the seat back, the vibration isolating structure is also applied to the side portion on the outer side in the vehicle width direction. Also good. The vibration isolation structure for a vehicle seat according to the present invention is not particularly limited as long as it is provided in at least one place of the support structure that supports the seat body with respect to the floor.

  Moreover, in the said Example, what comprised the 1st and 2nd member which comprises the vibration isolating structure of the vehicle seat of this invention as the cylindrical inner cylinder member 12 and the outer cylinder member 11, respectively was illustrated. However, these may be formed in other cross-sectional shapes such as a rectangular tube. Moreover, in the said Example, the inner cylinder member 12 was attached to the sheet | seat main body side member (each lower rail 5B of the horizontal slide rail 5), and the outer cylinder member 11 was attached to the floor side member (inner lower frame 4B). Although the configuration has been exemplified, the inner cylinder member may be attached to the floor side member, and the outer cylinder member may be attached to the seat main body side member.

1 seat body 2 seat back 2F back frame 2F1 outer side frame 2F2 inner side frame 2F3 upper frame 2F4 reinforcing pipe 3 seat cushion 3F cushion frame 3F1 outer side frame 3F2 inner side frame 3F3 front frame 3F4 reinforcing pipe 4 lower frame 4A outer lower frame 4B Inner lower frame (floor side member)
4B1 hole 5 Horizontal slide rail (slide rail)
5A Upper rail 5B Lower rail (Seat body side member)
5C Lock Device 6 Front / Rear Slide Rail 6A Upper Rail 6B Lower Rail 6C Lock Device 7 Seat Belt Device 7A Retractor 7B Webbing 7C Drawer 7D Tongue 7E Buckle 7F Fixing Tool 8 Reclining Device 8A Operation Lever 10 Vehicle Seat Anti-Vibration Structure 11 Outer Cylindrical Member (Second member)
12 Inner cylinder member (first member)
13 Anti-vibration rubber (elastic body)
20 Fastening portion 21 Bolt 21A Head 22 Nut with seat 22A Seat Ta clearance Tb clearance F Floor

Claims (3)

A vibration-proof structure for a vehicle seat that is provided in a support structure that supports a seat body with respect to a floor and suppresses vibrations transmitted from a floor-side member that constitutes the support structure to a seat body-side member,
A first member attached to the member on the seat body side;
A second member attached to the floor-side member;
An elastic body provided between the two members and elastically supporting the first member with respect to the second member;
One of the first member and the second member is formed in a cylindrical shape, the other is inserted into the cylinder, and the elastic body is provided between the peripheral surfaces facing each other inside and outside. Accordingly, the one and the other are elastically coupled to each other so as to be movable in the axial direction of the cylinder so that they do not interfere with each other in the axial direction of the cylinder. An anti-vibration structure for a vehicle seat, wherein A vibration isolating structure for a vehicle seat according to claim 1,
The seat body has a seat back coupled to a rear portion of a seat cushion supported on the floor, a retractor of a seat belt device is built in the seat back, and webbing is performed on a shoulder portion of the seat back on the outer side in the vehicle width direction. The vehicle seat is provided with a structure for supporting the side portion of the seat cushion in the vehicle width direction with respect to the floor. Anti-vibration structure for vehicle seats. A vibration isolating structure for a vehicle seat according to claim 1 or 2,
In the first member and the second member, the one formed in a cylindrical shape is fixed to the member on the floor side, and the other inserted into the one tube is also formed in a cylindrical shape. A bolt for fastening the other side to a member on the seat body side can be inserted and fixed in the cylinder, and a vibration isolating structure for the vehicle seat is provided between the seat body and the floor. A vibration isolating structure for a vehicle seat, wherein the slide rail is provided at a fastening portion that bolts the member to the seat main body or the floor member.

Images