JP2018002153A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle seat which facilitates resin molding of a seat frame, facilitates attachment of a reclining device and secures rigidity.SOLUTION: A vehicle seat S includes: a reclining device 30 which rotatably supports a resin back frame 20; a side frame part 24 which forms the back frame 20 and is formed by connecting a front side frame part 25 with a rear side frame part 26; and a connection bracket 50 which connects the reclining device 30 with the side frame part 24. A front end side of the connection bracket 50 is attached to the front side frame part 25 and a rear end side of the connection bracket is attached to the rear side frame part 26 in a seat fore-and-aft direction and sandwiches the side frame part 24 in the seat fore-and-aft direction.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a vehicle seat, and more particularly to a vehicle seat provided with a reclining device for supporting a back frame made of a resin material in a rotatable state.

Some vehicle seats are formed by molding a part or all of a back frame and a cushion frame with a resin material such as plastic for weight reduction.
As an example of such a vehicle seat, there is provided a reclining device that supports a seat back having a back frame as a skeleton so as to be rotatable relative to the seat cushion, and a portion to which the reclining device is attached, for example, a back frame is provided. A structure in which a side frame portion to be formed is formed of a resin material is known (see Patent Document 1).

  In the vehicle seat described in Patent Document 1, the entire back frame is molded as an integral member by a composite material having a thermoplastic matrix and reinforcing fibers, and further, the lower end portion of the side upright portion corresponding to the side frame portion In addition, a hinge device corresponding to a reclining device is overmolded.

JP 2003-182417 A

However, in the vehicle seat as in Patent Document 1, since the reclining device is overmolded when the back frame is molded with resin, the structure becomes complicated, and the molding operation may be relatively difficult. .
Therefore, when manufacturing a vehicle seat, it is desired that the back frame as a skeleton can be easily resin-molded, and that the reclining device can be easily attached to the back frame made of a resin material. It was.

  Further, in a vehicle seat such as that disclosed in Patent Document 1, a vehicle seat that facilitates resin molding of the back frame and facilitates attachment of the reclining device while ensuring the rigidity of the back frame and the attachment rigidity of the reclining device is desired. It was rare.

The present invention has been made in view of the above problems, and an object of the present invention is to easily mold a seat frame as a skeleton in a manufacturing process. An object of the present invention is to provide a vehicle seat in which a reclining device can be easily attached to a part.
Another object of the present invention is to provide a vehicle seat that can ensure resin molding of a seat frame and ensure rigidity while facilitating attachment of a reclining device.

  According to the vehicle seat of the present invention, the subject is a vehicle seat provided with a reclining device that rotatably connects the back frame to the cushion frame, and the lateral side of the back frame in the seat width direction. Comprising a side frame portion made of a resin material, and a connection bracket that is attached to an outer surface in the seat width direction of the side frame portion and connects the side frame portion and the reclining device, The front end side is attached to the front surface of the side frame portion, and the rear end side is attached to the rear surface of the side frame portion.

As described above, since the reclining device is attached to the side frame portion made of a resin material via the connecting bracket, the side frame is compared with the case where the reclining device is overmolded when the side frame portion is resin-molded. The part can be easily resin-molded, and the reclining device can be easily attached.
That is, it is possible to provide a vehicle seat in which a seat frame as a skeleton can be easily molded in a manufacturing process, and a reclining device can be easily attached to a resin molding portion of the seat frame.
Further, the connecting bracket for connecting the side frame portion and the reclining device has a front end side attached to the front surface of the side frame portion and a rear end side attached to the rear surface of the side frame portion. Mounting rigidity can be secured.

At this time, the connection bracket preferably holds the side frame portion in the seat front-rear direction.
With the above configuration, it is possible to further secure the rigidity of the reclining device attached to the side frame portion.

At this time, the side frame portion is formed by connecting a front side frame portion and a rear side frame portion disposed on the seat rear side of the front side frame portion, and the front end side of the connection bracket is the front side frame. The vehicle seat according to claim 1, wherein the vehicle seat is attached to a rear portion, and a rear end side is attached to the rear side frame portion.
With the above configuration, the side frame portion made of a resin material is formed by connecting the front side frame portion and the rear side frame portion in the seat front-rear direction, so that the side frame portion is made of an integral resin member, Resin molding can be easily performed.

At this time, as for the said connection bracket, the front end side is attached to the said front side frame part by the fastening member, and the rear end side is good to be attached to the said back side frame part.
With the above configuration, it is possible to further secure the rigidity of the reclining device attached to the side frame portion.

At this time, the connection bracket includes a main body wall portion that is attached to an outer side surface in the seat width direction of the side frame portion, a front wall portion that extends inward in the seat width direction from the front end side of the main body wall portion, and the main body wall portion. A rear wall portion extending inward in the seat width direction from the rear end side, the front wall portion being attached to the front side frame portion, and the rear wall portion being preferably attached to the rear side frame portion.
With the above configuration, it is possible to further secure the rigidity of the reclining device attached to the side frame portion.
Specifically, the front side frame portion and the rear side frame portion constituting the side frame portion receive a static load received from the weight of the reclining device, a dynamic load received from the rotating operation of the reclining device, or an impact load received from the outside. For example, it is possible to prevent the sheet from falling in the front-rear direction or the left-right direction of the sheet or from being separated from each other.

At this time, it is preferable that at least a part of the front side frame part and at least a part of the rear side frame part overlap with each other to form a closed cross-sectional structure.
With the above configuration, the support rigidity of the side frame portion is further improved, and the reclining device can be stably attached.

At this time, the connection bracket is attached to the outer side surface in the seat width direction of the side frame portion by a plurality of connection members, and the plurality of connection members may be disposed so as to surround the rotation shaft of the reclining device. .
With the above configuration, the attachment rigidity of the reclining device to the side frame portion is further improved, and particularly the attachment rigidity around the rotation shaft of the reclining device can be ensured.

At this time, the connection bracket is attached to the outer side surface in the seat width direction of the side frame portion with an adhesive, and a recess recessed toward the other side is formed in at least one of the connection bracket and the side frame portion. Good to be.
With the above configuration, the connection bracket is attached to the side frame portion with an adhesive, and a recess that is recessed toward the other side is formed in at least one of the connection bracket and the side frame portion in order to ensure the thickness of the adhesive. Therefore, a gap is formed between the contact surfaces of the side frame portion and the connecting bracket, and the adhesive can be uniformly applied, and can be firmly fixed to each other.

At this time, it is preferable that a portion of the side frame portion to which the connection bracket is attached is formed to be thicker than a portion other than the portion to which the connection bracket is attached.
With the above-described configuration, it is possible to secure support rigidity in a portion of the side frame portion to which the connection bracket and the reclining device are attached, and it is possible to make the size of the entire side frame portion compact.

At this time, the connection bracket may be made of a metal material.
With the above configuration, the reclining device can be attached to a side frame portion made of a resin material and having a connecting bracket made of a metal material reinforced to a side frame portion in which the front side frame portion and the rear side frame portion are connected.

According to the first aspect of the present invention, since the reclining device is attached to the side frame portion made of a resin material via the connection bracket, the reclining device is overmolded when the side frame portion is resin-molded. Thus, the side frame portion can be easily molded with resin, and the reclining device can be easily attached.
That is, it is possible to provide a vehicle seat in which a seat frame as a skeleton can be easily molded in a manufacturing process, and a reclining device can be easily attached to a resin molding portion of the seat frame.
Further, the connecting bracket for connecting the side frame portion and the reclining device has a front end side attached to the front surface of the side frame portion and a rear end side attached to the rear surface of the side frame portion. Mounting rigidity can be secured.

According to the second aspect of the invention, it is possible to further secure the attachment rigidity of the reclining device to the side frame portion.
According to the invention of claim 3, the side frame portion made of a resin material is formed by connecting the front side frame portion and the rear side frame portion in the seat front-rear direction, so that the side frame portion is made of an integral resin member. Compared to the above, resin molding can be easily performed.
According to the invention of claim 4, it is possible to further secure the attachment rigidity of the reclining device to the side frame portion.

According to the invention of claim 5, it is possible to further secure the attachment rigidity of the reclining device to the side frame portion.
Specifically, the front side frame portion and the rear side frame portion constituting the side frame portion receive a static load received from the weight of the reclining device, a dynamic load received from the rotating operation of the reclining device, or an impact load received from the outside. For example, it is possible to prevent the sheet from falling in the front-rear direction or the left-right direction of the sheet or from being separated from each other.
According to the invention of claim 6, the support rigidity of the side frame portion is further improved, and the reclining device can be attached stably.
According to the invention of claim 7, the attachment rigidity of the reclining device to the side frame portion is further improved, and particularly the attachment rigidity around the rotation shaft of the reclining device can be ensured.

According to the eighth aspect of the present invention, the connecting bracket is attached to the side frame portion with the adhesive, and the recess recessed toward the other side in at least one of the connecting bracket and the side frame portion in order to secure the thickness of the adhesive. Therefore, a gap is formed between the contact surfaces of the side frame portion and the connecting bracket, and the adhesive can be applied uniformly, and can be firmly fixed to each other.
According to invention of Claim 9, support rigidity can be ensured in the part to which a connection bracket and a reclining apparatus are attached among side frame parts, and the size of the whole side frame part can be made compact. .
According to the invention of claim 10, the reclining device is attached after reinforcing the connecting bracket made of a metal material to the side frame portion made of a resin material and connected to the front side frame portion and the rear side frame portion. be able to.

1 is a perspective view of a vehicle seat according to the present invention. It is a perspective view of the seat frame used as the frame of a vehicular seat. It is a perspective view of a seat frame, and is an enlarged view around a reclining device. It is AA sectional drawing of a seat frame, Comprising: It is an enlarged view of a side frame part. It is a disassembled perspective view of the reclining apparatus attached to a side frame part via a connection bracket. It is a perspective view of the storage case of a reclining device. It is explanatory drawing when the internal structure of a reclining apparatus is seen from the sheet | seat side. Fig.8 (a) is a perspective view of a connection bracket, FIG.8 (b) is a perspective view of the connection bracket seen from another angle.

The present embodiment is a vehicle seat provided with a reclining device that rotatably supports a resin back frame, which constitutes a back frame, and a front side frame portion and a rear side frame portion are connected to each other. A side frame portion and a connecting bracket for connecting a reclining device to the side frame portion, and the connecting bracket is attached to the front side frame portion at the front end side in the longitudinal direction of the seat and attached to the rear side frame portion at the rear end side. The present invention relates to a vehicle seat invention characterized in that a side frame portion is sandwiched in the front-rear direction of the seat.
The side on which the occupant sits with respect to the seat back of the vehicle seat is the front side of the seat.

As shown in FIG. 1, the vehicle seat S of the present embodiment includes a seat cushion 1, a seat back 2, and a headrest 3.
The seat cushion 1 is configured by placing a cushion pad 1a on a cushion frame 10 shown in FIG. 2 serving as a skeleton and covering it with a skin material 1b.
The seat back 2 is configured by placing a cushion pad 2a on a back frame 20 shown in FIG. 2 serving as a skeleton and covering it with a skin material 2b.
The headrest 3 has a configuration in which a cushion pad 3a is placed on a core material (not shown) and is covered with a skin material 3b, and is supported by a headrest pillar HP attached to the back frame 20.

  As shown in FIG. 2, the cushion frame 10 includes a substantially rectangular frame that is a skeleton of the seat cushion 1, and includes a slide rail device 4 for sliding the vehicle seat S in the front-rear direction, and the vehicle seat. It is attached to the vehicle body floor via a height adjusting device 5 for moving S up and down.

The back frame 20 is formed of a substantially rectangular frame that is a skeleton of the seat back 2, and is formed of carbon fiber reinforced plastic (CFRP) as a resin material.
As shown in FIG. 2, the lower end portion of the back frame 20 is supported by being connected to the rear end portion of the cushion frame 10 via the reclining device 30. In such a state, the back frame 20 can rotate relative to the cushion frame 10.

The back frame 20 is formed by individually molding a front back frame 20a as a front portion and a rear back frame 20b disposed behind the front back frame 20a, and then connecting both frames in the front-rear direction with an adhesive. Is formed.
The back frame 20 may be formed of a resin material other than CFRP, or a molding method other than mold molding, for example, by laminating sheets made of a resin material in accordance with the frame shape. The back frame 20 may be formed.
Further, the entire back frame 20 is resin-molded by CFRP. However, the present invention is not limited to this. For example, at least the side frame portion to which the reclining device 30 is attached is formed of a resin material. And good.

As shown in FIG. 2, the back frame 20 includes an upper frame portion 21 extending in the left-right direction, a lower frame portion 22 disposed below the upper frame portion 21 and extending in the left-right direction, and an upper frame. The left and right side frame portions 24 extend downward from both left and right end portions of the portion 21 and are connected to the left and right end portions of the lower frame portion 22, respectively.
The upper frame portion 21 is formed to be somewhat wider in the vertical direction, and at least a part of the vertical cross-section has a closed cross-sectional structure in the left-right direction, and the vertical cross-sectional shape is a hollow rectangular shape.
The lower frame portion 22 connects the rear ends of the lower end portions of the left and right side frame portions 24 and is provided so as to go around from the rear end of the lower end portion to the front surface, and has a substantially J-shape when viewed from the side.
A plate-like support portion 23 for supporting the back of the occupant is hooked between the upper frame portion 21 and the lower frame portion 22 in the vertical direction.

The left and right side frame portions 24 are asymptotically wide in the front-rear direction from the upper side to the lower side, and have a curved shape when viewed from the left-right direction, with the lower end side being forward of the upper end side. It is formed overhanging.
The side frame portion 24 is formed by connecting a front side frame portion 25 serving as a front portion and a rear side frame portion 26 disposed behind the front side frame portion 25 in the front-rear direction, as shown in FIG. As described above, the cross-sectional shape in the vertical direction is a closed cross-sectional structure.

As shown in FIG. 3, shaft holes (not shown) through which the rotation shaft 40 of the reclining device 30 is inserted are formed on the left and right side surfaces of the side frame portions 24. The rotating shaft 40 is disposed between the left and right side frame portions 24 in a state where the axial direction is along the left-right direction, and the extending end portion of the rotating shaft 40 is left and right from the outer surface of the side frame portion 24 through the shaft hole. Projects outward in the direction.
The extended end portion of the projecting rotation shaft 40 is assembled with the reclining device 30 via the connection bracket 50, and the operation lever 42 shown in FIG. 2 is attached to a position outside the reclining device 30.
Note that the number of the reclining devices 30 may be arranged on both sides in the left-right direction of the vehicle seat S, or may be arranged only on one side in the left-right direction.

As shown in FIG. 4, the front side frame portion 25 is made of a resin molded product having a substantially crank-shaped transverse cross section that is long in the vertical direction, and includes a frame front wall portion 25 a that is a front portion of the side frame portion 24, The frame outer wall portion 25b is bent rearward from the left and right outer end portions of the wall portion 25a, and the frame inner wall portion 25c is bent rearward from the left and right inner end portions of the frame front wall portion 25a.
The rear side frame portion 26 is made of a resin molded product having a substantially L-shaped cross section that is long in the vertical direction, and includes a frame rear wall portion 26a serving as a rear portion of the side frame portion 24, and left and right outer sides of the frame rear wall portion 26a. The frame outer wall portion 26b is bent forward from the end portion.
At this time, the frame outer wall portion 25b of the front side frame portion 25 and the frame outer wall portion 26b of the front side frame portion 25 overlap in the left-right direction, and the rear end portion of the frame inner wall portion 25c and the frame rear wall The front surface of the portion 26a is connected so as to overlap in the front-rear direction.

More specifically, the front side frame portion 25 and the rear side frame portion 26 are connected by an adhesive at the overlapping portion, and as a result, the lateral cross section of the side frame portion 24 forms a closed cross sectional structure.
Further, the frame inner side wall portions 25c of the left and right front side frame portions 25 extend in the front-rear direction so as to incline in the left-right inner direction. Therefore, when the front back frame 20a is assembled to the rear back frame 20b, the front back frame 20a can be connected while being bent left and right, and the assemblability of the back frame 20 is improved.

As shown in FIG. 3, a connecting bracket 50 that connects the side frame portion 24 and the reclining device 30 is attached to the left and right outer surfaces of the side frame portion 24 and at the lower end portion.
As shown in FIG. 4, the portion of the side frame portion 24 to which the connection bracket 50 is attached is formed to be thicker than the portion other than the portion to which the connection bracket 50 is attached. Details will be described later.

As shown in FIG. 3, the reclining device 30 includes a device that rotatably connects the back frame 20 to the cushion frame 10, and is attached to a laterally outer side surface of the back frame 20 via a connection bracket 50. Yes.
As shown in FIG. 5 or FIG. 6, the reclining device 30 is mainly composed of a reclining device main body 31 that is driven when the back frame 20 is rotated, and an accommodation case 32 that accommodates the reclining device main body 31. Yes.

As shown in FIG. 7, the reclining device main body 31 includes a sliding lock member 35, and the lock gear portion 34 attached to the sliding lock member 35 is engaged with the engagement gear by the vertical movement of the sliding lock member 35. It comes to engage with or disengage from 33.
By such a reclining device main body 31, the state of the back frame 20 can be switched between a locked state fixed to the cushion frame 10 and an unlocked state capable of relative rotation with respect to the cushion frame 10. Is possible.

The housing case 32 is made of a metal case for housing the reclining device main body 31, has a substantially cylindrical outer shape, and is configured by combining an outer case piece 32a and an inner case piece 32b as shown in FIG. Has been.
As shown in FIG. 5, the outer case piece 32a has an outer peripheral surface joined to the cushion frame 10, and as shown in FIG. 7, an engagement gear 33 is formed on the inner peripheral surface. A sliding lock member 35 is provided on the inner side.
The inner case piece 32b is joined to the back frame 20 side via a connecting bracket 50, and a pair of path defining portions 36 and 36 that define a moving path of the sliding lock member 35 are provided on the inner side thereof. It is arranged in a state where is sandwiched. The sliding lock member 35 has a cam surface 37. The cam body 38 that contacts the cam surface 37 is fixed to the rotating shaft 40 that has penetrated the inner case piece 32b and entered the case. Installed in.

In the above configuration, as shown in FIG. 7, in the reclining device 30, the sliding lock member 35 is disposed at a position where the lock gear portion 34 and the engagement gear 33 are engaged with each other at the normal time. Is locked.
When the operation lever 42 shown in FIG. 1 is operated in such a state, the rotation shaft 40 is rotated by the operation, and the cam body 38 is rotated in conjunction with this operation, and the cam in the rotation state is rotated. When the body 38 moves away from the cam surface 37, the sliding lock member 35 moves between the path defining portions 36 and 36 in a direction away from the engagement gear 33.
As a result, the lock gear portion 34 is disengaged from the engagement gear 33, and the state of the back frame 20 becomes an unlocked state.

While the back frame 20 is in the unlocked state, the occupant can tilt the seat back 2 backward, and when the operating lever 42 is released when the rearward tilt angle reaches a desired angle, the spring body 39 is released. The urging force of the cam body 38 returns to the original position, that is, the locked position, and the sliding lock member 35 moves between the path defining portions 36 and 36 toward the engagement gear 33.
As a result, when the operation of the operation lever 42 is completed, the lock gear portion 34 is engaged with the engagement gear 33 again, and the state of the back frame 20 returns to the locked state.

As shown in FIG. 5, the reclining device 30 is attached to the back frame 20 by being bonded to the connection bracket 50 with an adhesive.
Specifically, in the reclining device 30, a positioning protrusion 32c shown in FIG. 6 that protrudes inward from the outer surface of the inner case piece 32b is fitted into a positioning hole 51b formed on the outer surface of the connecting bracket 50 described later. In addition, it is bonded to the connecting bracket 50 with an adhesive.

As shown in FIG. 5, a spiral spring 41 is hooked on the lower end portion of the back frame 20 to which the reclining device 30 is attached and the rear end portion of the cushion frame 10.
The spiral spring 41 urges the back frame 20 to rotate forward when the back frame 20 is in the unlocked state and the seat back 2 is tilted backward. The one end 41a is provided on the back frame 20 side and is latched by a spring locking member 60 that extends outward in the left-right direction.
Further, the other end portion 41b of the spiral spring 41 is provided on the cushion frame 10 side, and the spring locking portion 11 is also latched by the spring locking portion 11 extending outward in the left-right direction.

As shown in FIG. 5, the connection bracket 50 is made of a substantially U-shaped metal plate that connects the side frame portion 24 and the reclining device 30, and is arranged so as to sandwich the side frame portion 24 in the front-rear direction. .
The connection bracket 50 includes a main body wall portion 51 attached to the left and right outer surfaces of the side frame portion 24, a front wall portion 52 that extends from the front end to the left and right sides on the upper end side of the main body wall portion 51, and the upper end of the main body wall portion 51. The rear wall portion 53 is mainly composed of a rear wall portion 53 that extends from the rear end to the left and right inner sides.
The front wall portion 52 is attached to the frame front wall portion 25 a of the front side frame portion 25, and the rear wall portion 53 is attached to the frame rear wall portion 26 a of the rear side frame portion 26.
The front wall portion 52 and the rear wall portion 53 overlap with the front side frame portion 25 and the rear side frame portion 26, respectively, and are adhesively bonded by an adhesive, and further mechanically bonded by a fastening member. 24 and the mounting rigidity of the reclining device 30 are increased.

The main body wall portion 51 is a plate member that is interposed between the outer side surface of the rear side frame portion 26 in the side frame portion 24 and the housing case 32 of the reclining device 30.
As shown in FIG. 8, the main body wall 51 is formed in the center portion thereof, and is close to the shaft hole 51 a for passing through the rotation shaft 40 of the reclining device 30, and the radial direction thereof. A plurality of positioning hole portions 51b that are formed on the outer side for positioning the receiving case 32 of the reclining device 30 by fitting, and an attachment for attaching the spring locking member 60 formed above the shaft hole portion 51a. Hole 51c.

The shaft hole portion 51 a of the main body wall portion 51 has at least a part of its outer peripheral portion bent to the left and right inside and is fitted into the shaft hole of the side frame portion 24, and the connecting bracket 50 is positioned with respect to the side frame portion 24. Is done. Moreover, the mounting rigidity of the reclining device is ensured.
The positioning hole 51b is formed in four directions so as to surround the shaft hole 51a in a circular shape, and is fitted with a positioning protrusion 32c formed on the outer surface of the inner case piece 32b of the housing case 32 shown in FIG. Thus, the reclining device 30 is positioned with respect to the connection bracket 50.
The attachment hole 51 c is a part to which a spring locking member 60 for locking one end side of the spiral spring 41 is attached. The spring locking member 60 is attached to the connection bracket 50 by fitting the connection pin 54 from the mounting hole 51c side toward the spring locking member 60 side. At this time, the connecting pin 54 functions as a positioning member that positions the spring locking member 60 with respect to the connecting bracket 50.

The main body wall 51 is bonded and bonded to the left and right outer surfaces of the side frame 24 by an adhesive, and is mechanically bonded by a plurality of connecting members 55 arranged so as to surround the rotation shaft 40 of the reclining device 30. It is configured.
At this time, there are two substantially circular recesses 56 recessed toward the side frame portion 24 at positions different from the upper portion of the outer surface of the connection bracket 50 where the connection pins 54 and the connection members 55 are attached. One is formed.
For this reason, the gap between the side frame portion 24 and the concave portion 56 of the connecting bracket 50 can be brought into contact with each other, so that a gap between the adhesive can be secured, and the adhesive is uniformly applied to the overlapping surface of the side frame portion 24 and the connecting bracket 50. It becomes possible to apply to.

In addition, the front wall part 52 is attached to the frame front wall part 25a of the front side frame part 25 shown in FIG. 4, and the frame front wall part 25a is partially thick.
Similarly, the main body wall 51 and the rear wall 53 are respectively attached to the frame outer wall 26b and the frame rear wall 26a of the rear side frame 26 shown in FIG. 4, and the frame outer wall 26b and the frame rear wall. 26a is partially thick.
Therefore, the rigidity of the side frame part 24 and the attachment rigidity of the reclining device 30 attached to the side frame part 24 can be ensured.

The spring locking member 60 is a substantially L-shaped sheet metal member that locks one end of the spiral spring 41, and extends from the side frame portion 24 side to the left and right sides as shown in FIG. A spring locking portion 61 that locks one end portion of the spring locking portion 61, and a mounting portion 62 that extends downward from the left and right inner ends of the spring locking portion 61 and is attached to the connection bracket 50.
An attachment hole 62 a for attachment to the connection bracket 50 is formed in the attachment part 62, and the attachment hole 62 a communicates with the attachment hole 51 c of the connection bracket 50.
Then, the connection pin 54 is inserted from the left and right inner side surfaces of the connection bracket 50 and fitted into the attachment hole 51c and the attachment hole 62a, so that the spring locking member 60 is attached to the connection bracket 50. .

  The spring locking member 60 is welded and joined to the left and right outer surfaces of the connection bracket 50 and further mechanically joined by the plurality of connection pins 54 as described above. Therefore, the mounting rigidity of the spring locking member 60 is improved.

  In the above embodiment, the back frame 20 is formed by individually resin-molding the front back frame 20a and the rear back frame 20b and then connecting both frames in the front-rear direction. However, the present invention is limited to this. Alternatively, the back frame 20 may be resin-molded as an integral part.

  In the above embodiment, the fixing means between the side frame portion 24 and the connecting bracket 50, the fixing means between the reclining device 30 and the connecting bracket 50, and the fixing means between the connecting bracket 50 and the spring locking member 60 are particularly limited. Without limitation, known fixing means such as adhesive bonding, welding, bolting, and rivet fastening can be used as appropriate, and the fixing strength may be improved by combining a plurality of fixing means.

  In the said embodiment, although the connection bracket 50 is formed from the metal material, it is not limited to this, You may form from the resin material or other well-known materials. For example, the weight of the vehicle seat can be reduced by forming the connection bracket 50 from a resin material.

In the said embodiment, the connection bracket 50 is provided with the front wall part 52 and the back wall part 53, and the front wall part 52 is attached to the frame front wall part 25a of the front side frame part 25, as shown in FIG. Although the rear wall portion 53 is attached to the frame rear wall portion 26a of the rear side frame portion 26, the rear wall portion 53 can be appropriately changed without being limited thereto.
That is, the front end side of the connection bracket 50 may be attached to the front side frame portion 25 and the rear end side may be attached to the rear side frame portion 26, and the shape, arrangement, and configuration can be changed as appropriate.

In the above-described embodiment, the connecting bracket 50 and the spring locking member 60 are configured as separate bodies, but the present invention is not limited thereto, and the connecting bracket 50 and the spring locking member 60 may be integrated. good.
By doing in this way, it is not necessary to provide the spring latching member 60 which latches the one end part of the spiral spring 41 separately, and can reduce a number of parts. In addition, by providing the connection bracket 50 with a portion for locking one end of the spiral spring 41, the rigidity of the connection bracket 50 itself can be improved.

  In the above-described embodiment, a vehicle seat used for an automobile has been described as a specific example. can do.

In the present embodiment, the vehicle seat S according to the present invention has been mainly described.
However, said embodiment is only an example for making an understanding of this invention easy, and does not limit this invention. The present invention can be changed and improved without departing from the gist thereof, and the present invention includes the equivalents thereof.
In particular, the shape, arrangement, and configuration of the back frame 20, the reclining device 30, and the connecting bracket 50 described in the above embodiment are merely examples, and do not limit the present invention.

S Vehicle Seat 1 Seat Cushion 1a, 2a, 3a Cushion Pad 1b, 2b, 3b Skin Material 2 Seat Back 3 Headrest 4 Slide Rail Device 5 Height Adjuster HP Headrest Pillar 10 Cushion Frame 11 Spring Locking Section 20 Back Frame 20a Front back frame 20b Rear back frame 21 Upper frame part 22 Lower frame part 23 Plate-like support part 24 Side frame part 25 Front side frame part 25a Frame front wall part 25b Frame outer wall part 25c Frame inner wall part 26 Rear side frame part 26a Frame rear wall portion 26b Frame outer wall portion 30 Reclining device 31 Reclining device main body 32 Housing case 32a Outer case piece 32b Inner case piece 32c Positioning protrusion 33 Engaging gear 34 Lock gear portion 35 Sliding lock member 36 Path defining portion 37 Cam surface 38 Cam body 39 Spring body 40 Rotating shaft 41 Spiral spring 41a One end portion 41b The other end portion 42 Operation lever 50 Connection bracket 51 Main body wall portion 51a Shaft hole portion 51b Positioning hole portion 51c Mounting hole portion 52 Front wall portion 53 Rear wall portion 54 Connecting pin 55 Connecting member 56 Recessed portion 60 Locking member 61 Spring locking portion 62 Mounting portion 62a Mounting hole portion

Claims (10)

A vehicle seat including a reclining device that rotatably connects a back frame to a cushion frame,
The side frame portion of the back frame is configured on the side in the seat width direction, and a side frame portion made of a resin material;
A mounting bracket that is attached to the outer side surface of the side frame portion in the seat width direction and connects the side frame portion and the reclining device;
The connecting bracket has a front end attached to a front surface of the side frame portion and a rear end attached to a rear surface of the side frame portion.   The vehicle seat according to claim 1, wherein the connection bracket sandwiches the side frame portion in the seat front-rear direction. The side frame part is formed by connecting a front side frame part and a rear side frame part arranged on the seat rear side of the front side frame part,
3. The vehicle seat according to claim 1, wherein a front end side of the connection bracket is attached to the front side frame part, and a rear end side is attached to the rear side frame part.   4. The vehicle seat according to claim 3, wherein a front end side of the connection bracket is attached to the front side frame portion and a rear end side is attached to the rear side frame portion by a fastening member. The connection bracket includes a main body wall portion that is attached to an outer surface in the seat width direction of the side frame portion, a front wall portion that extends inward in the seat width direction from a front end side of the main body wall portion, and a rear end side of the main body wall portion. A rear wall portion extending inward in the seat width direction from
The vehicle seat according to claim 3 or 4, wherein the front wall portion is attached to the front side frame portion, and the rear wall portion is attached to the rear side frame portion.   6. The side frame part according to claim 3, wherein at least a part of the front side frame part and at least a part of the rear side frame part overlap to form a closed cross-sectional structure. The vehicle seat according to claim 1. The connection bracket is attached to the outer side surface of the side frame portion in the seat width direction by a plurality of connection members,
The vehicle seat according to any one of claims 1 to 6, wherein the plurality of connecting members are arranged so as to surround a rotation shaft of the reclining device. The connection bracket is attached to the outer side surface of the side frame portion in the seat width direction by an adhesive,
The vehicular seat according to any one of claims 1 to 7, wherein a recess that is recessed toward the other side is formed in at least one of the connecting bracket and the side frame portion.   The portion of the side frame portion to which the connecting bracket is attached is formed to be thicker than the portion other than the portion to which the connecting bracket is attached. The vehicle seat according to Item.   The vehicle seat according to claim 1, wherein the connection bracket is made of a metal material.

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