JP7040242B2 - Back frame - Google Patents

Description

The present disclosure relates to a back frame of a seat mounted on a vehicle.

For example, the back frame described in Patent Document 1 is attached to the body of a vehicle. The body is provided with an engaging portion and a fixing portion. A hook provided on the back frame is fitted into the engaging hole provided in the engaging portion from above. The fixing portion is provided below the engaging portion, and is a portion where the fixed portion provided on the back frame is fixed by a mechanical fixing tool such as a bolt.

Japanese Unexamined Patent Publication No. 11-18871

The upper side of the back frame is only fitted into the engaging portion provided on the body, and is not fixed to the body by mechanical fasteners such as bolts. Therefore, when a large load toward the front of the seat (hereinafter, abbreviated as "forward load") acts on the back frame, the hook comes out of the engaging portion and the back frame moves toward the front of the seat centering on the fixed portion. There is a risk of moving to fall down.

In view of the above points, the present disclosure discloses an example of a back frame capable of suppressing the hook from coming out of the engaging portion even when a forward load is applied to the back frame.

The back frame of the seat mounted on the vehicle having the engaging portion (BP1) provided on the body and the fixing portion (BP2) provided below the engaging portion (BP1) of the body is, for example, A hook (3) that can be fitted into the engaging hole (BP3) provided in the engaging portion (BP1) from above, and an engagement when the hook (3) is fitted into the engaging hole (BP3). A position restricting portion (9C) that contacts the portion (BP1) and regulates the position of the hook (3) with respect to the engaging portion (BP1), and a fixed portion (5) that is fixed to the fixing portion (BP2). , A frame material (7) that is directly or indirectly connected to the fixed portion (5) and extends from the fixed portion (5) side to the hook (3) side, and is in front of the seat from the hook (3). The first reinforcing wire (9A) connected to the frame material (7) arranged in the frame material (7) and one end side of the hook (3) in the sheet width direction, extending to the frame material (7) and the frame material (7). The first reinforcing wire (9A) connected to the second reinforcing wire (9B) connected to the other end side of the hook (3) in the seat width direction, and the frame material extends to the frame material (7). A second reinforcing wire (9B) connected to (7) is provided, and at least one of the first reinforcing wire (9A) and the second reinforcing wire (9B), the reinforcing wire (9B) is from the hook (3). It is desirable that it is connected to the frame material (7) at a position on the lower side.

As a result, when a forward load acts on the back frame (1), the load input to the hook (3) passes through the first reinforcing wire (9A), the second reinforcing wire (9B), and the frame material (7). It is transmitted to the fixed portion (5) fixed to the body.

At this time, at least one of the first reinforcing wire (9A) and the second reinforcing wire (9B) is connected to the frame material (7) at a position lower than the hook (3). A force that pulls the hook (3) downward is generated in the one reinforcing wire (9B) as a reaction of the load. Therefore, even when a forward load is applied to the back frame (1), it is possible to prevent the hook (3) from coming out of the engaging portion (BP1).

The back frame (1) may have the following configuration.
The frame material (7) is configured to have a first vertical wire (7A) and a second vertical wire (7B), and the first vertical wire (7A) is one end side in the sheet width direction of the hook (3). The second vertical wire (7B) extends from the fixed portion (5) side to the hook (3) side, and the second vertical wire (7B) is hooked from the fixed portion (5) side on the other end side of the hook (3) in the sheet width direction. 3) Extending to the side, further, the first reinforcing wire (9A) is connected to the first vertical wire (7A), and the second reinforcing wire (9B) is connected to the second vertical wire (7B). Is desirable.

As a result, a person who manufactures the back frame (1) (hereinafter referred to as a manufacturer) can easily configure the frame material (7) at low cost.
Further, it is desirable that the first reinforcing wire (9A), the second reinforcing wire (9B) and the position regulating portion (9C) are composed of one continuous wire material (9). Thereby, the manufacturer can easily construct the frame material (7) at low cost.

Incidentally, the reference numeral in each of the parentheses is an example showing a correspondence relationship with the specific configuration and the like described in the embodiment described later, and the present disclosure is limited to the specific configuration and the like shown in the reference numeral in the parentheses. It's not something.

It is a figure which shows the back frame which concerns on 1st Embodiment. It is a figure which shows the back frame which concerns on 1st Embodiment. It is a figure which shows the back frame which concerns on 1st Embodiment. It is a figure which shows the back frame which concerns on 1st Embodiment.

The following "embodiments of the invention" show an example of embodiments that belong to the technical scope of the present disclosure. That is, the matters specifying the invention described in the claims are not limited to the specific configuration, structure, etc. shown in the following embodiments.

At least one member or part described with a reference numeral is provided, except when a notice such as "one" is given. That is, if there is no notice such as "one", two or more of the members may be provided.

This embodiment is an example in which the back frame according to the present disclosure is applied to a seat mounted on a vehicle such as a vehicle (hereinafter referred to as a vehicle seat). The arrows and the like indicating the directions attached to each figure are described in order to make it easier to understand the relationship between each figure.

Therefore, the invention presented in the present disclosure is not limited to the directions given in the drawings. The directions shown in each figure are the directions in the state where the vehicle seat according to the present embodiment is assembled to the vehicle.

(First Embodiment)
1. 1. Outline of Back Frame The back frame 1 shown in FIG. 1 is a skeleton used for the seat back 2 of the rear seat. The seat back 2 is a portion for supporting the back of the seated person. The back frame 1 is mounted on the vehicle body Bd (see FIG. 3).

The vehicle body Bd is provided with at least one engaging portion BP1 and one fixing portion BP2. As shown in FIG. 1, the fixing portion BP2 is provided below the engaging portion BP1. The back frame 1 is attached to the vehicle body Bd via the engaging portion BP1 and the fixing portion BP2.

2. 2. Details of the back frame The back frame 1 according to the present embodiment has a substantially symmetrical structure with respect to a substantially central portion in the seat width direction. The following description is the details of the back frame 1 on one end side (right end side in FIG. 1) in the seat width direction.

As shown in FIG. 2, the back frame 1 includes at least a hook 3, a fixed portion 5, a frame material 7, a first reinforcing wire 9A, a second reinforcing wire 9B, and the like. As shown in FIG. 3, the hook 3 is a fitting portion that fits into the engaging hole BP3 provided in the engaging portion BP1 from above.

<Hook>
As shown in FIG. 2, the hook 3 is formed by bending one metal wire into a substantially U shape. The hook 3 is fixed to the upper end side beam 11 by welding. The upper end side beam 11 is a beam member extending in the seat width direction on the upper end side of the back frame 1.

A lower end beam 13 is provided on the lower end side of the back frame 1. The lower end side beam 13 is a beam member extending in the seat width direction on the lower end side of the back frame 1. The lower end side beam 13 is provided with a metal fixed portion 5.

The fixed portion 5 is a portion fixed to the fixed portion BP2 (see FIG. 1) provided on the vehicle body Bd. The fixed portion 5 is fixed to the fixing portion BP2 by a mechanical fixing tool such as a bolt. The fixed portion 5 is fixed to the lower end side beam 13 by welding.

<Frame material>
The frame material 7 is a member that is directly or indirectly connected to the fixed portion 5 and extends from the fixed portion 5 side to the hook 3 side. The frame material 7 according to the present embodiment is indirectly connected to the fixed portion 5 via the lower end side beam 13.

The frame material 7 includes a first vertical wire 7A and a second vertical wire 7B made of metal. The first vertical wire 7A extends from the fixed portion 5 side to the hook 3 side on one end side of the hook 3 in the sheet width direction. The second vertical wire 7B extends from the fixed portion 5 side to the hook 3 side on the other end side of the hook 3 in the seat width direction.

Specifically, the first vertical wire 7A extends downward from the upper end side beam 11 on the right side of the hook 3 and is connected to the lower end side beam 13 by welding. The second vertical wire 7B extends from the lower side to the lower side of the hook 3 on the left side of the hook 3 and is connected to the lower end side beam 13 by welding.

At the upper end of the second vertical wire 7B, a connecting portion 7C extending toward the first vertical wire 7A is provided. The connecting portion 7C is a portion extending from the upper end of the second vertical wire 7B, and the tip end side in the extending direction is fixed to the first vertical wire 7A by welding.

<Reinforcing wire>
The first reinforcing wire 9A is a metal wire connected to one end side (right side in this embodiment) of the hook 3 in the seat width direction. The second reinforcing wire 9B is a metal wire connected to the other end side (left side in this embodiment) of the hook 3 in the seat width direction.

The first reinforcing wire 9A extends to the frame material 7 and is connected to the frame material 7. The second reinforcing wire 9B extends to the frame material 7 and is connected to the frame material 7 at a position below the hook 3.

Specifically, the first reinforcing wire 9A extends from the right side of the hook 3 to one end (right side) in the sheet width direction and is welded to the first vertical wire 7A. The second reinforcing wire 9B extends downward from the left side of the hook 3 and is welded to the second vertical wire 7B at a position below the hook 3.

That is, at least one of the first reinforcing wire 9A and the second reinforcing wire 9B is connected to the frame material 7 at a position lower than the hook 3. In the present embodiment, of the first reinforcing wire 9A and the second reinforcing wire 9B, the second reinforcing wire 9B located on the center side in the seat width direction is connected to the frame material 7 at a position below the hook 3. ..

As shown in FIG. 3, the first vertical wire 7A and the second vertical wire 7B (hereinafter, collectively referred to as a frame material 7) are arranged in front of the seat from the hook 3. Therefore, the first reinforcing wire 9A and the second reinforcing wire 9B have a portion 9D or the like extending from the hook 3 to the front of the seat.

<Position Control Department>
The position restricting portion 9C shown in FIG. 2 is a portion for restricting the position of the hook 3 with respect to the engaging portion BP1. Specifically, as shown in FIG. 3, when the hook 3 is fitted into the engaging hole BP3, the position restricting portion 9C comes into contact with the upper portion of the engaging portion BP1. As a result, the fitting length of the hook 3 is restricted.

In the present embodiment, as shown in FIG. 2, the first reinforcing wire 9A, the second reinforcing wire 9B, and the position restricting portion 9C are composed of one continuous wire material 9. That is, the one wire material 9 is welded and fixed to the first vertical wire 7A, the hook 3, and the second vertical wire 7B.

3. 3. Features of the back frame according to the present embodiment As shown in FIG. 4, when the forward load F acts on the back frame 1, the load F input to the hook 3 is the first reinforcing wire 9A and the second reinforcing wire 9B. And is transmitted to the fixed portion 5 fixed to the body via the frame material 7.

At this time, at least one of the first reinforcing wire 9A and the second reinforcing wire 9B (in this embodiment, the second reinforcing wire 9B) is connected to the frame material 7 at a position lower than the hook 3. Therefore, a force F1 that pulls the hook 3 downward is generated in the second reinforcing wire 9B, which is the one reinforcing wire, as a reaction of the load F.

Therefore, even when the forward load F acts on the back frame 1, it is possible to prevent the hook 3 from coming out of the engaging portion BP1. Since the position restricting portion 9C is provided, it is possible to prevent the hook 3 from being excessively fitted into the engaging portion BP1 even if a force F1 that pulls the hook 3 downward is generated.

The frame material 7 includes a first vertical wire 7A and a second vertical wire 7B, the first reinforcing wire 9A is connected to the first vertical wire 7A, and the second reinforcing wire 9B is the second vertical wire. It is connected to 7B. As a result, the manufacturer can easily configure the frame material 7 at low cost.

The first reinforcing wire 9A, the second reinforcing wire 9B, and the position regulating portion 9C are composed of one continuous wire material 9. As a result, the manufacturer can easily configure the frame material 7 at low cost.

(Other embodiments)
In the above-described embodiment, the second reinforcing wire 9B is connected to the frame material 7 at a position below the hook 3. However, the inventions disclosed herein are not limited thereto. That is, the present invention may have, for example, a configuration in which the first reinforcing wire 9A and the second reinforcing wire 9B, or the first reinforcing wire 9A are connected to the frame material 7 at a position lower than the hook 3.

The frame material 7 according to the above-described embodiment is composed of the first vertical wire 7A and the second vertical wire 7B. However, the inventions disclosed herein are not limited thereto. That is, in the present invention, for example, the frame material 7 may be composed of one wire.

In the above-described embodiment, the first reinforcing wire 9A, the second reinforcing wire 9B, and the position restricting portion 9C are composed of one continuous wire material 9. However, the inventions disclosed herein are not limited thereto.

In the above embodiment, the back frame according to the present disclosure is applied to the vehicle. However, the application of the invention disclosed in the present specification is not limited to this, and it is also applied to seats used for vehicles such as railroad vehicles, ships and aircraft, and stationary seats used for theaters and households. Applicable.

Further, the present disclosure is not limited to the above-described embodiment as long as it conforms to the gist of the invention described in the claims. Therefore, at least two of the plurality of embodiments described above may be combined.

1 ... Back frame 2 ... Seat back 3 ... Hook 5 ... Fixed part 7 ... Frame material 7A ... 1st vertical wire 7B ... 2nd vertical wire 7C ... Connecting part 9 ... Wire material 9A ... 1st reinforcing wire 9B ... 2nd Reinforcing wire 9C ... Position regulation part 11 ... Upper end side beam 13 ... Lower end side beam

Claims (2)

In the back frame of the seat mounted on the vehicle having the engaging portion provided on the body and the fixing portion provided below the engaging portion of the body.
A hook that can be fitted from above into the engagement hole provided in the engagement portion,
When the hook is fitted into the engaging hole, the position restricting portion that contacts the engaging portion and regulates the position of the hook with respect to the engaging portion.
The fixed portion fixed to the fixed portion and the fixed portion
A frame material that is directly or indirectly connected to the fixed portion and extends from the fixed portion side to the hook side, and is arranged in front of the seat from the hook.
A first reinforcing wire connected to one end side in the seat width direction of the hook, and a first reinforcing wire extending to the frame material and connected to the frame material.
A second reinforcing wire connected to the other end side of the hook in the seat width direction, comprising a second reinforcing wire extending to the frame material and connected to the frame material.
At least one of the first reinforcing wire and the second reinforcing wire is connected to the frame material at a position lower than the hook.
The first reinforcing wire, the second reinforcing wire, and the position restricting portion are back frames made of one continuous wire material . The frame material is configured to have a first vertical wire and a second vertical wire.
The first vertical wire extends from the fixed portion side to the hook side on one end side in the sheet width direction of the hook.
The second vertical wire extends from the fixed portion side to the hook side on the other end side of the hook in the seat width direction.
The back frame according to claim 1, wherein the first reinforcing wire is connected to the first vertical wire, and the second reinforcing wire is connected to the second vertical wire.

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