JP6544023B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat, and more particularly to a vehicle seat provided with a reclining device that rotatably connects a seat back to a seat cushion.

  2. Description of the Related Art There is widely known a vehicle seat provided with a reclining device that rotatably connects a back frame, which is a framework of a backrest, to a cushion frame, which is a framework of a seating unit. 2).

In the seat with a reclining device described in Patent Document 1, the rotation axis serving as the rotation center of the back frame, the spiral spring biasing the back frame forward with respect to the rotation axis, and the outside of the back frame in the seat width direction And a spring lock bracket attached to the side surface for locking the free end side of the spiral spring.
The reclining device is switchable between a locked state in which the rotational movement of the back frame is locked and an unlocked state, and is locked by operating the operation lever from the state in which the back frame is locked in a predetermined standing posture It is possible to release the state and adjust the standing posture of the back frame.
Then, when the back frame rotates to a predetermined rotational position, in order to restrict the rotational movement of the back frame, the spring locking bracket attached to the back frame comes in contact with a part of the cushion frame. ing.

The seat with a reclining device described in Patent Document 2 has a similar configuration, and a spring locking bracket includes a base attached to the outer surface of the back frame, and a projecting portion protruding outward from the outer surface of the base. The tip end of this projecting portion is a spring locking portion for locking one end of the spiral spring.
The protruding portion between the base portion and the spring locking portion in the spring locking bracket is a stopper portion which abuts on the abutting wall portion provided on the cushion frame when the back frame is rotated to a predetermined rotational position. .

JP 2012-126246 A JP, 2011-183122, A

By the way, in the seat with a reclining device like patent documents 1 and 2, when a back frame rotates to a predetermined position, the spring stop bracket in a back frame side and the contact wall part in a cushion frame side are While the structure is in contact, if a foreign matter intrudes into the gap between the spring locking bracket and the contact wall in the rotational direction of the back frame, there is a risk that the smooth rotational movement of the reclining device may be impeded. there were.
Therefore, the vehicle seat which stabilized the rotational operation of the reclining apparatus was desired by covering the said clearance gap.

Further, in the seat with the reclining device as in Patent Documents 1 and 2, the spring locking bracket is a member directly applied with the biasing force of the spiral spring when the back frame rotates, and restricts the rotation of the back frame. It is also a stopper member for
Therefore, among the components of the reclining device, it is desirable to stabilize the operation of the device, in particular by securing the rigidity of the spring locking bracket.

This invention is made in view of said subject, The objective of this invention is providing the vehicle seat which stabilized the rotational operation of the reclining apparatus.
Another object of the present invention is to provide a vehicle seat capable of suppressing the entry of foreign matter into the interior of a reclining device.
Another object of the present invention is to provide a vehicle seat in which the rigidity of the component parts of the reclining device is secured.

  According to the vehicle seat of the present invention, the subject is a cushion frame which is a skeleton of a seating portion, a back frame which is a skeleton of a backrest, and a recliner which rotatably connects the back frame to the cushion frame. A seat for a vehicle, wherein the reclining device urges the back frame along a direction of rotation about the rotation axis that is the rotation center of the back frame and the rotation axis A spring, a base attached to the outer surface of the back frame in the seat width direction, and a projecting portion projecting outward from the outer surface of the base, the tip end side of the projecting portion being the biasing spring A spring locking bracket serving as a spring locking portion for locking one end side of the spring lock bracket, of the spring locking bracket, the base and the spring lock A portion between them, an abutting portion capable of coming into contact with the abutted portion provided on the cushion frame side when the back frame rotates to a predetermined rotational position, and the rotation relative to the abutting portion A cover is provided on the outer side in the radial direction of the shaft and is disposed on the side of the abutted portion in the rotational direction of the rotation shaft with respect to the abutted portion. Be done.

As described above, when the back frame is rotated to a predetermined rotational position, the spring locking bracket includes an abutting portion capable of abutting on the abutted portion provided on the cushion frame side, and the abutting portion Also, since the cover portion is provided on the outer side in the radial direction of the rotation shaft and is disposed on the side of the abutted portion in the rotation direction of the rotation shaft rather than the contact portion, Thus, foreign matter can be prevented from entering the gap between the contact portion of the spring locking bracket and the abutted portion on the cushion frame side.
Specifically, in the spring locking bracket, the cover portion is arranged to cover at least a part of the gap.
Therefore, a vehicle seat in which the rotational movement of the reclining device is stabilized can be realized.

At this time, the cover portion is a front cover portion disposed forward of the contact portion in the rotational direction of the rotation shaft, and a rear cover portion disposed rearward of the contact portion. It is good to have
Generally, in a seat with a reclining device, when the back frame is respectively rotated to a predetermined forward rotational position and a predetermined backward rotational position, the spring locking bracket and the cushion frame abut on each other. That is, the abutted portion is provided at a position where the abutting portion of the spring locking bracket is sandwiched in the back and forth direction in the rotational direction of the back frame.
Therefore, as described above, by the spring locking bracket having the front cover portion and the rear cover portion, these cover portions can cover the gap between the contact portion and the abutted portion more suitably. .

At this time, the front cover portion projects further forward than the spring engagement portion in the rotational direction of the rotation shaft, and the rear cover portion is larger than the spring engagement portion in the rotation direction of the rotation shaft. It is good if it overhangs to the rear side .
Further, the cover portion is preferably formed to be wider than the contact portion in the rotation direction of the rotation shaft.
Further, the cover portion is disposed at a position covering the contact groove provided on the cushion frame side from above when the back frame is at a predetermined position in the rotation direction, and the contact portion is It is good that it is an inner wall of the said abutted groove .
According to the above configuration, the cover portion can more preferably cover the gap between the contact portion and the abutted portion.

At this time, it is preferable that the contact portion projects and extends outward in the sheet width direction from a portion of the base located below the projecting portion.
Preferably, the contact portion protrudes downward from a portion of the projecting portion which is located inward of the spring locking portion in the seat width direction.
According to the above configuration, the contact portion extends so as to protrude from the relatively stiff portion of the spring locking bracket, so that the rigidity of the contact portion can be enhanced.

At this time, the contact portion is a first wall portion extending downward from the projecting portion, and a second wall portion extending inward in the sheet width direction from the lower portion of the first wall portion and connected to the base portion It is good to have a wall portion.
By the above configuration, the rigidity of the contact portion can be further enhanced.

At this time, the contact portion may be formed by cutting and raising each of the base and the projecting portion.
With the above-described configuration, there is no need to join the parts together in forming the contact portion on the spring engagement bracket, and the mass productivity is excellent.

At this time, it is preferable that a through hole penetrating in the vertical direction is formed in a portion of the projecting portion between the contact portion and the cover portion in the rotational direction of the rotation shaft.
With the above configuration, when forming the contact portion on the spring locking bracket, the shape is excellent in mass production processability.

At this time, it is preferable that a portion of the abutting portion that abuts on the abutted portion is disposed inside the spring engagement portion in the radial direction of the rotation shaft.
According to the above configuration, the foreign matter hardly enters the gap between the contact portion and the contact portion.

At this time, the abutted portion is formed at the upper end portion of the cushion frame, and provided at positions sandwiching the abutted portion in the rotational direction of the rotation shaft, and the back frame is rotated to a predetermined rotational position. At the same time, in order to restrict rotational movement of the back frame, it is preferable that the back frame be provided in contact with the contact portion.
As described above, when forming the abutted portion at the predetermined position on the cushion frame side, the abutted portion is directly formed on the cushion frame, so there is no need to add additional components, and the number of parts can be reduced. It leads to the facilitation of the assembly work.

According to the first aspect of the invention, the cover portion can prevent foreign matter from entering the gap between the contact portion of the spring locking bracket and the abutted portion on the cushion frame side. Specifically, in the spring locking bracket, the cover portion is arranged to cover at least a part of the gap.
Therefore, a vehicle seat in which the rotational movement of the reclining device is stabilized can be realized.
According to the second aspect of the present invention, by the spring locking bracket having the front cover portion and the rear cover portion, the cover portions preferably cover the gap between the contact portion and the contact portion. Can.
According to the third, fourth, and fifth aspects of the present invention, the cover portion can more preferably cover the gap between the abutting portion and the abutted portion.

According to the sixth, seventh, and eighth aspects of the invention, since the abutment portion extends so as to project from the portion of the spring locking bracket which is relatively rigid, the stiffness of the abutment portion can be enhanced.
According to the inventions of claims 9 and 10, there is no need to join the parts together in forming the contact portion on the spring engaging bracket, and the mass productivity is excellent.
According to invention of Claim 11, it becomes a shape which a foreign material can not easily penetrate | invade in the clearance gap between contact part and abutted part.
According to the twelfth aspect of the present invention, since the abutted portion is directly formed on the cushion frame, it is not necessary to increase the number of components separately, which leads to the reduction of the number of parts and the facilitation of the assembling operation.

It is a perspective view of a vehicular seat concerning this embodiment. It is a perspective view of a seat frame used as frame of a vehicular seat. It is a principal part enlarged view of FIG. 2, and is a figure explaining the reclining apparatus periphery. It is an exploded perspective view of a reclining device. Fig.5 (a) is a perspective view of a spring locking bracket, FIG.5 (b) is a perspective view of the spring locking bracket seen from another angle. It is a figure explaining the state to which the back frame rotated to the predetermined position and the spring latching bracket contact | abutting to a part of cushion side frame.

Hereinafter, a vehicle seat according to an embodiment of the present invention will be described with reference to FIGS. 1 to 6.
The present embodiment is a vehicle seat provided with a reclining device, comprising: a biasing spring for biasing the back frame along the rotational direction of the rotation shaft; a base mounted to the outer surface of the back frame; A spring-locking bracket having a projecting portion projecting from the outer surface of the housing, and a tip end side of the projecting portion serving as a spring-locking portion for locking one end of the biasing spring; The portion of the bracket between the base portion and the spring locking portion is an abutting portion that can abut against the abutted portion at the upper end of the cushion frame when the back frame is rotated to a predetermined rotational position; A front cover portion and a rear cover portion which are provided on the outer side in the radial direction of the rotation shaft than the contact portion and are respectively disposed on the side of the abutted portion in the rotation direction of the rotation shaft than the contact portion It is characterized by It relates invention of the vehicle seat.
The side where the occupant sits on the seat back of the vehicle seat is the seat front side.

As shown in FIG. 1, the vehicle seat S of the present embodiment rotates the seat back 2 with respect to the seat cushion 1 as shown in FIG. 2, and a seat body including the seat cushion 1 and the seat back 2. It is mainly composed of a reclining device 30 which can be connected.
The seat body is attached to the vehicle body floor via a height link device that couples the seat body so as to be able to move up and down and a rail device that supports the seat body so as to be movable back and forth.

As shown in FIG. 1, the seat cushion 1 is a seating portion for supporting a seated person from below, and the cushion frame 1 shown in FIG. Is configured.
The seat back 2 is a backrest portion for supporting the back of a seated person from behind, and is configured by mounting the cushion pad 2a on a back frame 20 shown in FIG. .

  The cushion frame 10 is, as shown in FIG. 2, formed of a substantially rectangular frame-like body, and is a plate-like pan frame 12 connecting the side frames 11 disposed on the left and right sides and the front portion of each side frame 11. And a pipe-like rear connection frame 13 for connecting the rear portions of the side frames 11 and three elastic springs 14 which are hooked to the pan frame 12 and the rear connection frame 13 and extend in a serpentine manner. Is configured.

The side frame 11 is a sheet metal member extending in the longitudinal direction of the seat and having a substantially I-shaped longitudinal cross section, and an upper end flange 11a that protrudes and bends inward in the seat width direction from the upper end portion of the frame main body And a lower end flange 11b that protrudes and protrudes outward from the lower end portion of the sheet in the sheet width direction.
As shown in FIGS. 2 and 3, a reclining device 30 is attached to the rear portion of the side frame 11.
Specifically, as shown in FIG. 4, the side frame 11 is provided with an axial hole 11 c for inserting the rotating shaft 32 and an axial hole 11 c, as shown in FIG. The fitting hole 11d for fitting in is formed.
Further, in the portion of the upper end flange 11a located immediately above the rotary shaft 32, an abutted groove 11e formed by cutting out a part of the protruding portion of the upper end flange 11a is formed.

As shown in FIG. 2, the back frame 20 is a substantially rectangular frame-like body, and a substantially reverse U-shape connecting the back side frames 21 disposed on the left and right sides and the upper end portion of each back side frame 21. Upper frame 22 having a shape, a lower plate 23 having a substantially plate shape connecting lower end portions of the respective back side frames 21, and two elastic springs 24 which are hooked to the respective back side frames 21 and extend like a serpentine , Is mainly composed of.
As shown in FIG. 3, the back side frame 21 is a sheet metal member extending in the vertical direction and having a substantially U-shaped cross section, and the lower end portion thereof is a rear end portion of the side frame 11 through the reclining device 30. It is linked with
As shown in FIG. 4, a fitting hole 21 a for fitting the reclining unit 31 is formed on the outer surface of the back side frame 21 in the seat width direction.

  As shown in FIG. 3, the reclining device 30 is switchable between a locked state in which the rotational movement of the back frame 20 is locked and a unlocked state, and the state in which the back frame 20 is locked in a predetermined standing posture Thus, the lock state is released by operating an operation lever (not shown), and the upright posture of the back frame 20 can be adjusted.

As shown in FIGS. 3 and 4, the reclining unit 30 is axially supported in the seat width direction at the lower end portion of the back side frame 21 and the reclining unit 31 that restricts the rotation of the back frame 20. The rotary shaft 32 protrudes from the side and is connected to the reclining unit 31, and the spiral spring 33 attached to the outside of the reclining unit 31 in the seat width direction to bias the back frame 20 along the rotation direction. It is done.
The rotary shaft 32 is pivotally supported by the back side frame 21 and the side frame 11 in the seat width direction, and a control lever (not shown) is attached to the extension end thereof.
The spiral spring 33 is a biasing spring for biasing the back frame 20 to the seat front side, and one end of the spiral spring 33 is locked to a spring locking bracket 40 attached to the outer surface of the back side frame 21. The end is locked by a spring locking member 34 attached to the outer surface of the side frame 11.

The spring locking bracket 40 is a member made of a substantially L-shaped sheet metal member as shown in FIGS. 3 to 5 and is a member to which the urging force of the spiral spring 33 is applied when the back frame 20 rotates. It also functions as a stopper member for restricting the rotational movement of the frame 20.
The spring locking bracket 40 has a base 41 attached to the outer surface of the back frame 20 in the seat width direction, and a protrusion 42 projecting outward from the upper end portion of the base 41 in the seat width direction. The tip of the portion 42 is a spring locking portion 43 for locking one end of the spiral spring 33.

In the portion between the base 41 and the spring locking portion 43 in the spring locking bracket 40, when the back frame 20 is rotated to a predetermined front rotation position and back rotation position, the back frame 20 is on the cushion frame 10 side. An abutting portion 44 that abuts on a wall portion of the abutting groove 11 e is formed.
Here, the front wall portion 11 f and the rear wall portion 11 g in the contact groove 11 e correspond to the contact portion in the claims.
Further, a portion between the base portion 41 and the spring locking portion 43 is provided on the radially outer side (upper side) of the rotary shaft 32 than the abutting portion 44, and the rotary shaft 32 than the abutting portion 44. The cover part 45 arrange | positioned at the front side and back side of the rotation direction of each is formed.

The base portion 41 is a portion joined by welding to the outer side surface of the back side frame 21, and as shown in FIGS. 4 and 5, of the outer peripheral portion, the lower end portion adjacent to the reclining unit 31 is , And has a curved shape along the shape of the reclining unit 31.
Therefore, a compact arrangement can be realized while suppressing the spring locking bracket 40 from interfering with the reclining unit 31.
Further, as shown in FIG. 5, the base 41 is formed to be wider than the spring locking portion 43 in the seat longitudinal direction. Therefore, while improving the connection rigidity of the spring locking bracket 40 to the back frame 20, the overall shape can be made compact and lightweight.

The spring locking portion 43 is formed at the tip end position of the projecting portion 42 formed in a step-like shape, and is disposed at a lower position than the upper end of the contact portion 44 and the cover portion 45.
Therefore, in the spring locking bracket 40, the rigidity of the spring locking portion 43 which requires a relatively high rigidity can be secured, and the suppression of the enlargement of the spiral spring 33 in the vertical direction is considered.

The abutment portion 44 is a stopper portion for restricting the rotational movement of the back frame 20 when the back frame 20 is rotated to a predetermined rotational position, as shown in FIG. Each part of is formed by cutting and raising.
As shown in FIG. 5 (b), the contact portion 44 is a substantially L-shaped body, and a first wall portion 44 a bent and extended downward from a predetermined position of the projecting portion 42, and a first wall portion And a second wall portion b that is bent and extended inward in the sheet width direction from the lower end portion of the second portion 44 a and connected to the base portion 41.
At this time, the portion where the first wall portion 44a and the second wall portion 44b are connected is housed in the inside of the abutted groove 11e of the cushion frame 10, and the front wall portion 11f and the rear wall portion 11g respectively. It is an abutting portion 44c that abuts.

In the above configuration, in the portion of the projecting portion 42 between the contact portion 44 and the cover portion 45 in the rotational direction of the rotary shaft 32, a through hole 46 penetrating in the vertical direction is formed.
Therefore, when forming the contact portion 44 by partially cutting and raising the spring locking bracket 40, the shape is excellent in mass production processability.

Further, in the above configuration, the contact portion 44 c of the contact portion 44 is disposed on the inner side (lower side) than the spring locking portion 43 in the radial direction of the rotary shaft 32.
Therefore, as compared with the conventional example in which the contact portion 44c is provided at substantially the same height position as the projecting portion 42 (spring locking portion 43), a shape in which foreign matter is less likely to enter the gap inside the contact groove 11e Become.

As shown in FIGS. 3 and 6, the cover portion 45 is a cover portion that covers the contact groove 11e from above when the back frame 20 is at a predetermined position, and contacts in the rotational direction of the rotation shaft 32. A front cover portion 45 a disposed on the front side of the portion 44 and a rear cover portion 45 b disposed on the rear side of the contact portion 44 are provided.
The front cover portion 45 a projects forward of the spring locking portion 43 in the rotational direction of the rotary shaft 32, and the rear cover portion 45 b projects rearward of the spring locking portion 43.

In the above-described configuration, the cover portions 45 a and 45 b are each formed to be wider than the contact portion 44 in the rotational direction of the rotation shaft 32.
Therefore, the cover part 45 can cover suitably the clearance gap between the contact part 44 and the wall part (contact part) in the contact groove 11e. As a result, it is possible to suppress foreign matter from entering the gap.

Further, in the above configuration, the cover portions 45a and 45b are curved in a substantially arc shape along the shapes of the contact groove 11e and the reclining unit 31, respectively.
Therefore, the cover portion 45 can suitably cover the gap between the contact portion 44 and the wall portion (contact portion) in the contact groove 11e, and a part of the contact groove 11e is exposed. The reclining unit 31 can also be suitably covered.

Next, a state in which the contact portion 44 of the spring locking bracket 40 is in contact with the front wall portion 11f of the contact groove 11e will be described based on FIG.
When the back frame 20 rotationally moves about the rotary shaft 32, the abutting portion 44 of the spring locking bracket 40 rotationally moves in the abutted groove 11e.
And when back frame 20 rotates to a predetermined front position, in order to restrict rotational movement of back frame 20, contact part 44c and front wall 11f in contact groove 11e contact. ing.
Similarly, when the back frame 20 is rotated to a predetermined rear position, the contact portion 44c is in contact with the rear wall 11g of the abutted groove 11e.

In the above configuration, as shown in FIG. 6, the abutted groove 11 e is formed in the upper end portion of the side frame 11, and the front wall portion 11 f and the rear wall portion 11 g contact portions 44 in the rotational direction of the rotation shaft 32. It is provided in the position which pinches | interposes (the contact part 44c).
As described above, when the abutted portion is formed at the predetermined position on the cushion frame 10 side, the abutted groove 11e is directly formed in the side frame 11, so that it is not necessary to increase the number of components separately. It leads to reduction and facilitation of assembly work.

In the above configuration, the contact groove 11e is formed at a position immediately above the reclining unit 31 so that the reclining unit 31 can be viewed from the outside.
Therefore, the assembled state of the reclining unit 31 can be easily confirmed from the outside by using the contact groove 11e.

<Other Embodiments>
In the above embodiment, as shown in FIG. 6, the spring locking bracket 40 includes a front cover portion 45 a located forward of the contact portion 44 and a rear cover portion 45 b located rearward of the contact portion 44. However, the present invention is not limited to this and may be changed as long as at least one of the cover portions 45a and 45b is provided.

In the above embodiment, as shown in FIG. 6, the front wall portion 11f and the rear wall portion 11g of the abutted groove 11e are formed on the upper end of the side frame 11 as an abutted portion provided on the cushion frame 10 side. However, it can be changed without being particularly limited.
For example, a component such as a connection bracket for connecting the side frame 11 and the back side frame 21 or a reinforcing frame for reinforcing the side frame 11 may be separately provided to form the abutted portion on the component. .

In the above embodiment, as shown in FIG. 6, the front wall portion 11f and the rear wall portion 11g of the abutted groove 11e are formed in a part of the side frame 11 as the abutted portion, but are particularly limited. The shape can be changed without any problem.
For example, a projecting portion formed by projecting a portion of the upper end portion of the side frame 11 upward may be used as the abutted portion, or a portion of the upper end portion of the side frame 11 is recessed downward. The wall of the depressed portion may be the abutted portion.

  Although the vehicle seat used for a car was explained as a specific example in the above-mentioned embodiment, it is not limited to this, Other than a vehicle seat such as a train or a bus, it is also used as a vehicle seat such as an airplane can do.

In the present embodiment, the vehicle seat S according to the present invention has been mainly described.
However, the above embodiment is merely an example for facilitating the understanding of the present invention, and does not limit the present invention. The present invention can be modified and improved without departing from the gist thereof, and the present invention naturally includes the equivalents thereof.

S Vehicle Seat 1 Seat Cushion 2 Seat Back 1a, 2a Cushion Pad 1b, 2b Skin Material 2 Seat Back 10 Cushion Frame 11 Side Frame 11a Top Flange 11b Bottom Flange 11c Shaft Hole 11d Fitting Hole 11e Contact Groove 11f Front Wall Part (contact part)
11g Rear wall (contact part)
12 pan frame 13 rear connection frame 14 elastic spring 20 back frame 21 back side frame 21a fitting hole 22 upper frame 23 lower frame 24 elastic spring (bias spring)
Reference Signs List 30 reclining device 31 reclining unit 32 rotation shaft 33 spiral spring 34 spring locking member 40 spring locking bracket 41 base 42 protruding portion 43 spring locking portion 44 contact portion 44a first wall portion 44b second wall portion 44c contact portion 45 cover part 45a front cover part 45b rear cover part 46 through hole

Claims (12)

A vehicle seat comprising: a cushion frame as a framework of a seat, a back frame as a framework of a backrest, and a reclining device rotatably connecting the back frame to the cushion frame,
The reclining device is
An axis of rotation that is the center of rotation of the back frame;
A biasing spring which biases the back frame along the rotational direction about the rotational axis;
The base has a base attached to the outer surface of the back frame in the seat width direction, and a projecting portion projecting outward from the outer surface of the base, and the tip end of the projecting portion is one end side of the biasing spring A spring locking bracket which is a spring locking portion for locking the
The portion of the spring locking bracket between the base and the spring locking portion is:
An abutment portion that can abut on an abutted portion provided on the cushion frame side when the back frame is rotated to a predetermined rotational position;
A cover portion is provided outside the contact portion in the radial direction of the rotation shaft, and is disposed on the side of the contact portion in the rotation direction of the rotation shaft with respect to the contact portion. A seat for a vehicle characterized by being.   The cover portion has a front cover portion disposed forward of the contact portion in the rotational direction of the rotation shaft, and a rear cover portion disposed rearward of the contact portion. The vehicle seat according to claim 1, characterized in that: The front cover portion is protrudes forward side of the spring engaging portion in the rotation direction of the rotary shaft,
The vehicle seat according to claim 2 , wherein the rear cover portion protrudes rearward with respect to the spring engagement portion in the rotational direction of the rotation shaft .   The vehicle seat according to any one of claims 1 to 3, wherein the cover portion is formed to be wider than the contact portion in the rotation direction of the rotation shaft. The cover portion is disposed at a position covering the contact groove provided on the cushion frame side from above when the back frame is at a predetermined position in the rotation direction.
The said to-be-contacted part is an inner wall of the said to-be-contacted groove | channel, The vehicle seat of any one of the Claims 1 thru | or 4 characterized by the above-mentioned.   The said contact part is protruded and extended outside the sheet | seat width direction from the part which exists in the lower position rather than the said projection part among the said bases, It is characterized by the above-mentioned. Car seat.   The said contact part is protruded and extended below from the part which exists in the sheet | seat width direction inside of the said spring latching part among the said projection parts, It is extended, It is characterized by the above-mentioned. Vehicle seat as described in.   The contact portion includes a first wall portion extending downward from the projecting portion, and a second wall portion extending inward in the sheet width direction from the lower portion of the first wall portion and connected to the base portion. The vehicle seat according to claim 6 or 7, characterized in that: The vehicle seat according to any one of claims 6 to 8, wherein the abutment portion is formed by cutting and raising each of the base portion and the projecting portion.   The through-hole penetrated in the up-down direction is formed in a portion which is between the contact portion and the cover portion in the rotational direction of the rotation shaft among the projecting portions. The vehicle seat of any one of 9.   11. The contact portion according to claim 1, wherein a portion of the contact portion that contacts the abutted portion is disposed inside the spring engagement portion in the radial direction of the rotation shaft. A vehicle seat according to any one of the preceding claims. The abutted portion is
It is formed at the upper end portion of the cushion frame, and provided at a position sandwiching the contact portion in the rotational direction of the rotation shaft,
The apparatus according to any one of claims 1 to 11, wherein when the back frame is rotated to a predetermined rotational position, the back frame is provided to abut on the contact portion in order to restrict rotational movement of the back frame. A vehicle seat according to any one of the preceding claims.

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