JP7398357B2 - Vehicle seats and vehicle seat frames - Google Patents

Description

The present invention relates to a vehicle seat and a frame for a vehicle seat, and more particularly to a vehicle seat and a vehicle seat frame having a frame structure with improved ease of assembly.

Patent Document 1 discloses an attachment structure between a seat back frame of a vehicle seat and a reclining mechanism, in which a protrusion is provided on the side frame side of the seat back, a through hole is formed on the arm side of the reclining mechanism part, and the protrusion is inserted through the reclining mechanism. A configuration is described in which a side frame and an arm are positioned by fitting into a hole.

Furthermore, Patent Document 2 discloses that a protrusion formed on a temporary fixing disk is inserted into a notch provided in the back frame to align the bolt holes on the back frame side and the bolt holes on the cushion frame side. It describes what to do.

Utility Model Publication No. 2-45039 Japanese Patent Application Publication No. 2001-57916

A frame on the seat back side and a frame on the seat cushion side of a vehicle seat are connected to each other with a plurality of parts attached thereto. When assembling these frames together, each frame is positioned and then connected, but it is often difficult to connect the frames while maintaining the positioned state.

In the configuration described in Patent Document 1, the through hole is formed with a relatively large size relative to the protrusion, so the protrusion provided on the side frame side is fitted into the through hole formed on the arm side. In this state, the protrusion on the side frame side has a large play (backlash) with respect to the through hole on the arm side, and the bolt holes on the side frame side and the bolt holes on the arm side become misaligned, causing the side frame and arm to There is a possibility that the workability when fixing with bolts will be poor.

On the other hand, in the configuration described in Patent Document 2, a protrusion is formed on a temporary fixing disk in order to align the positions of the back frame and the cushion frame. When assembling, it may hit or get caught on other parts, resulting in poor work efficiency.

The present invention solves the problems of the prior art described above, and provides a vehicle seat and vehicle having a configuration that allows reliable positioning and easy connection when assembling a seat back side frame and a seat cushion side frame. This provides a frame for the seat.

In order to solve the problems of the prior art described above, the present invention provides a vehicle seat including a seat cushion, a seat back, and a headrest, in which the seat cushion has a seat cushion side frame, and the seat back has a seat back side frame. It has a configuration in which the seat cushion side frame and the seat back side frame are fixed via a connection plate attached to the seat back side frame, and the seat cushion side frame and the connection plate are connected to the seat cushion side frame or the seat back side frame. The protrusion formed on either one of the connection plates fits into the hole formed on the other of the seat cushion side frame or the connection plate, and the end of the seat cushion side frame is formed on the connection plate. It is characterized by being joined in a state in which it is in contact with the stepped portion.

Further, in order to solve the problems of the prior art described above, in the present invention, in a vehicle seat frame including a seat cushion side frame and a seat back side frame, the seat cushion side frame and the seat back side frame are connected to the seat back side frame. In a configuration in which the seat cushion side frame and the connection plate are fixed via a connection plate attached to the side frame, the protrusion formed on either the seat cushion side frame or the connection plate is connected to the seat cushion side frame or the connection plate. It is characterized in that it fits into a hole formed in either one of the plates, and is joined with the end of the seat cushion side frame in contact with a step formed in the connection plate.

According to the present invention, the frame on the seatback side and the frame on the seat cushion side can be joined by bolting after positioning them, and the assembly of the frame on the seatback side and the frame on the seat cushion side is easy. It is now easier to work with and safer than before.

1 is a perspective view showing the appearance of a vehicle seat according to an embodiment of the present invention. FIG. 1 is a perspective view showing the structure of a metal frame of a vehicle seat according to an embodiment of the present invention. FIG. 2 is an enlarged view of a region including an angle adjustment section of a frame on the seat back side of a vehicle seat according to an embodiment of the present invention. FIG. 4 is an enlarged view of a portion of the frame on the seat cushion side of the vehicle seat according to the embodiment of the present invention, which is connected to the angle adjustment section of FIG. 3; FIG. 2 is an enlarged view of the seatback side frame and the seat cushion side frame of the vehicle seat according to the embodiment of the present invention, showing a state immediately before the seatback side frame and the seat cushion side frame are overlapped. FIG. 2 is an enlarged view of the seatback side frame and the seat cushion side frame, showing a state in which the seatback side frame and the seat cushion side frame of the vehicle seat according to the embodiment of the present invention are overlapped. FIG. 7 is a cross-sectional view taken along the line AA in FIG. 6 in a state where the frame on the seat back side and the frame on the seat cushion side of the vehicle seat according to the embodiment of the present invention are overlapped.

The present invention allows the seatback side frame and the seat to be pressed together at a plurality of locations by pressing concave portions or convex portions formed on the seat back side frame and convex portions or concave portions formed on the seat cushion side frame side. By aligning the frame on the cushion side and tightening the bolts while temporarily holding it, assembly of the frame on the seat back side and the seat cushion side is easier and safer than before. It has been made possible to do so.

Embodiments of the present invention will be described in detail below based on the drawings. In all the figures for explaining this embodiment, parts having the same functions are given the same reference numerals, and repeated explanations thereof will be omitted in principle.

However, the present invention should not be construed as being limited to the contents described in the embodiments shown below. Those skilled in the art will readily understand that the specific configuration can be changed without departing from the spirit or spirit of the present invention.

FIG. 1 shows the appearance of a vehicle seat 1 according to this embodiment.
A vehicle seat 1 according to the present embodiment includes a seat cushion 2 on which a passenger sits, a seat back 3 that supports the back of the seated passenger, and a headrest 4 that supports the head of the seated passenger. be done.

FIG. 2 shows the configuration of a metal frame 100 that constitutes the vehicle seat 1. As shown in FIG. The vehicle seat 1 shown in FIG. 1 has a cushioning material made of urethane or the like whose surface is covered with a skin material attached to the metal frame 100 shown in FIG.

The metal frame 100 shown in FIG. 2 includes a seat cushion side frame 20, a seat back side frame 30, and a slide rail section 40.

The seat cushion side frame 20 includes a left side frame 21 on the left side when viewed from the seated passenger, a right side frame 22 on the right side when viewed from the seated passenger, a left side frame 21, and a right side frame 22. A connecting plate 23 connects the left side frame 21 and the right side frame 22 at the front, a connecting pipe 24 connects the left side frame 21 and the right side frame 22 at the rear, and the slide rail 42 and the left side frame 21 or the right side frame 22 on the seat cushion side frame 20 side and the rear side. The rear link 25 is connected to the rear link 25.

The seat back frame 30 includes a left back side frame 31, a right back side frame 32, an upper panel 33 that connects the left back side frame 31 and the right back side frame 32 at the upper part, and a left back side frame 31 and the right back side. A lower panel 34 connects the frame 32 at the lower part, an angle adjustment section 37 for adjusting the angle of the seat back side frame 30 with respect to the seat cushion side frame 20, and an angle adjustment section 37 that extends from the angle adjustment section 37 to the left side back side frame 31 and the right side back side frame 32. It includes a connection pipe 38 that connects the side frame 32, and a connection plate 39 that connects the angle adjustment section 37 and the seat cushion side frame 20.

The slide rail portion 40 is configured to slide back and forth on which the seat cushion side frame 20 is placed, and includes a pair of left and right fixed rails 41 fixed to the floor surface of the vehicle (not shown), and slides back and forth along the fixed rails 41. a pair of left and right slide rails 42, a front link mechanism section 45 connecting the slide rail 42 and the left side frame 21 or right side frame 22 on the seat cushion side frame 20 side via a front link 43 at the front, the slide rail 42 and the seat. A rear link mechanism section 44 that connects the left side frame 21 or the right side frame 22 on the cushion side frame 20 side via the rear link 25 at the rear, and the operation lever 46 of the lock mechanism (not shown) of the seat slide device. We are prepared.

FIG. 3 shows an enlarged view of the configuration around the angle adjustment section 37 at the bottom of the left backside frame 31 of the seatback side frame 30. As shown in FIG. An angle adjustment section 37 for adjusting the angle of the seat back side frame 30 is fixed to the lower part of the left back side frame 31 with a fixing member 371.

Further, a connection plate 39 for connecting to the left side frame 21 of the seat cushion side frame 20 is attached to the angle adjustment portion 37. The connection plate 39 is rotatably attached to the angle adjustment part 37 fixed to the left backside frame 31 at a portion not shown. The connection plate 39 has two guide holes 391 that serve as positioning guides when connecting to the left side frame 21 and bolt holes 392 for fixing to the left side frame 21 with bolts.

Furthermore, the connection plate 39 is provided with a portion of the left side frame 21 that contacts the end surface of the left side frame 21 so that the positional relationship with the left side frame 21 is fixed in a state where the connection plate 39 is connected to the left side frame 21 with bolts. A stepped portion 393 is provided that follows the shape of the end surface. This stepped portion 393 also serves to strengthen the bending strength of the connection plate 39. Furthermore, in order to strengthen the bending strength of the connection plate 39, the outer peripheral portion of the connection plate 39 is formed with an edge 395 that rises toward the front side in FIG.

FIG. 4 shows the area around the area where the left side frame 21 of the seat cushion side frame 20 is connected to the left back side frame 31 of the seat back side frame 30, and the fixed rail 41 of the slide rail section 40 and the sliding area in the vicinity. An enlarged view of the rail 42 is shown.

At the location where the left side frame 21 is connected to the left back side frame 31, there is a protrusion 211 for positioning when connecting to the left back side frame 31, and a protrusion 211 corresponding to the two bolt holes 392 of the left back side frame 31. A bolt hole 212 is formed at the position. Further, the end surface 213 of the left side frame 21 has a concave shape, and the concave end surface 213 is formed so as to come into contact with a stepped portion 393 formed on the left back side frame 31. The protrusion 211 is formed by embossing the left side frame 21. In order to strengthen the bending strength, the left side frame 21 is formed with an edge 215 on the outer periphery thereof, which stands up on the back side in FIG. 4 .

In such a configuration, the subassembly of the seat cushion side frame 20 and the subassembly of the seatback side frame 30 are combined. That is, as shown in FIG. 5, the connection plate 39 attached to the left back side frame 31 of the seat back frame 30 is moved so as to overlap the left side frame 21 of the seat cushion side frame 20.

Here, the surface 394 of the connection plate 39 is overlapped with the surface 214 of the left side frame 21 so as to be on the upper side (front side) in FIG. The edges 215 formed on the outer periphery of the side frame 21 are respectively formed on a surface opposite to the surface where the connection plate 39 and the left side frame 21 are in contact. As a result, when the connection plate 39 and the left side frame 21 are overlapped, the edge 395 of the connection plate 39 does not interfere with the left side frame 21, and the edge 215 of the left side frame 21 Do not interfere with 39.

In addition, since the height of the protrusion 211 formed on the left side frame 21 is approximately the same as the thickness of the connection plate 39, when the connection plate 39 and the left side frame 21 are overlapped, other members or Even if you touch someone, it will not interfere with your work.

FIG. 6 shows a state in which the connection plate 39 attached to the left back side frame 31 of the seat back frame 30 is temporarily held on the left side frame 21 of the seat cushion side frame 20 before being fixed with bolts. In this state, the protrusion 211 formed on the left side frame 21 is fitted into the guide hole 391 formed on the connection plate 39 .

Here, the diameter of the guide hole 391 is formed to be slightly larger than the outer diameter of the protrusion 211. As a result, when the protrusion 211 is fitted into the guide hole 391, there is little play (backlash) of the protrusion 211 with respect to the guide hole 391, and the left side frame 21 and the left back side frame 31 are restrained from each other.

Further, in this state, the stepped portion 393 formed on the left back side frame 31 is in contact with the concave end surface 213 formed on the left side frame 21.

In this way, when the projection 211 of the left side frame 21 is fitted into the guide hole 391 of the connection plate 39 and the connection plate 39 and the left side frame 21 are restrained from each other, the step 393 of the connection plate 39 and the left side By bringing the concave end surface 213 of the frame 21 into contact and temporarily holding the connection plate 39 and the left side frame 21, the positional relationship between the connection plate 39 and the left side frame 21 can be fixed.

A cross-sectional view taken along line AA in FIG. 6 in this state is shown in FIG. With the projection 211 of the left side frame 21 fitted into the guide hole 391 of the connection plate 39, the stepped portion 393 of the connection plate 39 is in contact with the concave end surface 213 of the left side frame 21, and the connection plate 39 This shows a state in which the positional relationship between the left side frame 21 and the left side frame 21 is fixed.

In this temporarily held state, the bolt holes 392 formed in the connection plate 39 and the bolt holes 212 formed in the left side frame 21 are formed so as to overlap with each other. With the connection plate 39 and the left side frame 21 temporarily held in this way, by fastening the connection plate 39 and the left side frame 21 with bolts through the bolt holes 392 and 212, as shown in FIG. The connection plate 39 and the left side frame 21 can be joined and fixed with bolts 390.

3 to 7, the relationship between the connection plate 39 attached to the lower angle adjustment portion 37 of the left back side frame 31 of the seat back side frame 30 and the left side frame 21 of the seat cushion side frame 20 has been described. The right back side frame 32 of the seat back side frame 30 and the right side frame 22 of the seat cushion side frame 20 are also connected in a similar configuration.

According to this embodiment, the positional relationship between the connection plate 39 attached to the left back side frame 31 and the left side frame 21 is regulated at a plurality of locations so that the connection plate 39 can be temporarily held. and the left side frame 21. Even if a positional shift occurs, it can be easily restored, so that the connection plate 39 and the left side frame 21 can be easily bolted together, and the seatback side frame 30 and the seat cushion side frame 20 can be connected easily. can now be done relatively easily.

Further, according to this embodiment, the positional relationship between the connection plate 39 and the left side frame 21 is regulated and temporarily held at a plurality of locations, thereby making it possible to reproducibly reproduce the positional relationship between the connection plate 39 and the left side frame 21. This has made it possible to improve the quality of vehicle seat frames and reduce the variation between products in vehicle seat frames.

Furthermore, according to this embodiment, the connection plate 39 and the left side frame 21 are temporarily held in a state where the projection 211 of the left side frame 21 is fitted into the guide hole 391 of the connection plate 39. The positional relationship between the connection plate 39 and the left side frame 21 will not shift significantly when they are temporarily held, and the connection plate 39 and the left side frame 21 can be easily fastened together. 30 and the seat cushion side frame 20 could be improved.

In the embodiment described above, the guide hole 391 of the connection plate 39 is formed and the projection 211 is formed in the left side frame 21. However, the projection of the connection plate 39 is provided and the left side The frame 21 may have a guide hole.

Furthermore, in the embodiment described above, an example was shown in which the protrusion 211 of the left side frame 21 is formed by embossing, but the protrusion 211 may be formed by embedding a pin in the left side frame 21.

Further, in the embodiment described above, a configuration has been described in which the stepped portion 393 of the connection plate 39 is brought into contact with the concave end surface 213 of the left side frame 21. , a convex step portion may be formed to match the concave end surface of the left side frame 21, and the step portion of the left side frame 21 may be brought into contact with the concave end surface of the connection plate 39. .

Above, the invention made by the present inventor has been specifically explained based on Examples, but it goes without saying that the present invention is not limited to the Examples and can be modified in various ways without departing from the gist thereof. stomach. For example, the embodiments described above are described in detail to explain the present invention in an easy-to-understand manner, and the present invention is not necessarily limited to having all the configurations described. Further, it is possible to add, delete, or replace a part of the configuration of each embodiment with other configurations.

1 Vehicle seat 2 Seat cushion 3 Seat back 4 Headrest 20 Seat cushion side frame 21 Left side frame 211 Projection 212 Bolt hole 213 End surface 22 Right side frame 30 Seat back side frame 31 Left back side frame 32 Right side back side frame 37 Angle Adjustment part 39 Connection plate 390 Bolt 391 Guide hole 392 Bolt hole 393 Step part

Claims (8)

A vehicle seat comprising a seat cushion, a seat back, and a headrest,
The seat cushion has a seat cushion side frame,
The seat back has a seat back side frame,
The seat cushion side frame and the seat back side frame are fixed via a connection plate attached to the seat back side frame,
The seat cushion side frame and the connection plate are such that a protrusion formed on either the seat cushion side frame or the connection plate is connected to a hole formed on the other of the seat cushion side frame or the connection plate. 1. A vehicle seat, wherein the seat cushion side frame is joined with an end portion of the seat cushion side frame in contact with a step portion formed on the connection plate. The vehicle seat according to claim 1,
An angle adjustment part that adjusts the angle of the seatback side frame with respect to the seat cushion side frame is fixed to the seat back side frame, and the connection plate is fixed to the angle adjustment part to adjust the angle of the seat back side frame. A vehicle seat characterized by being attached to a back side frame at a variable angle. The vehicle seat according to claim 1,
In a state in which the seat cushion side frame and the connection plate are temporarily held before the seat cushion side frame and the connection plate are joined, the seat cushion side frame and the connection plate are connected to the seat cushion side frame. Alternatively, the protrusion formed on either one of the connection plates is fitted into the hole formed on the other of the seat cushion side frame or the connection plate, and the end of the seat cushion side frame and the A vehicle seat characterized in that the positions of the seat cushion side frame and the connection plate are restrained by abutting a stepped portion formed on the connection plate. The vehicle seat according to claim 1,
A vehicle seat, wherein the protrusion formed on either the seat cushion side frame or the connection plate is formed by embossing the seat cushion side frame or the connection plate. A vehicle seat frame comprising a seat cushion side frame and a seat back side frame,
In the configuration in which the seat cushion side frame and the seat back side frame are fixed via a connection plate attached to the seat back side frame,
The seat cushion side frame and the connection plate are such that a protrusion formed on either the seat cushion side frame or the connection plate is connected to a hole formed on the other of the seat cushion side frame or the connection plate. What is claimed is: 1. A frame for a vehicle seat, characterized in that the end portion of the seat cushion-side frame is joined to a stepped portion formed on the connecting plate in a state where the end portion thereof is in contact with a step portion formed on the connecting plate. The vehicle seat frame according to claim 5,
An angle adjustment part that adjusts the angle of the seatback side frame with respect to the seat cushion side frame is fixed to the seat back side frame, and the connection plate is fixed to the angle adjustment part to adjust the angle of the seat back side frame. A frame for a vehicle seat, characterized in that the frame is attached to a back side frame at a variable angle. The vehicle seat frame according to claim 5,
In a state in which the seat cushion side frame and the connection plate are temporarily held before the seat cushion side frame and the connection plate are joined, the seat cushion side frame and the connection plate are connected to the seat cushion side frame. Alternatively, the protrusion formed on either one of the connection plates is fitted into the hole formed on the other of the seat cushion side frame or the connection plate, and the end of the seat cushion side frame and the A frame for a vehicle seat, characterized in that the positions of the seat cushion side frame and the connection plate are restrained by abutting a stepped portion formed on the connection plate. The vehicle seat frame according to claim 5,
The vehicle seat is characterized in that the protrusion formed on either the seat cushion side frame or the connection plate is formed by embossing the seat cushion side frame or the connection plate. flame.

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