JP2016088478A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle seat capable of stabilizing a rotation operation of an arm rest mechanism.SOLUTION: A vehicle seat S comprises an arm rest 30 rotatably attached to an outside face of a seat back 1 in a seat width direction, via an attachment bracket 20. A cover member 40 is assembled between the arm rest 30 and the attachment bracket 20 for covering an opening part of a gap formed between the arm rest 30 and the attachment bracket 20. The cover member 40 comprises a cover body part 41 for covering in a manner of surrounding a rotation shaft 32 of the arm rest 30 and a movement regulation shaft 33, and a cover engagement part 43 projecting from the cover body part 41 toward an attachment member 20 side, and capable of being engaged to an engagement step 27 on an outer edge of the attachment member 20.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a vehicle seat, and more particularly to a vehicle seat provided with an armrest on a side portion of a seat back in a seat width direction.

  2. Description of the Related Art Conventionally, a vehicle seat including an armrest that is rotatably attached to an outer side surface of a seat back in a seat width direction via a mounting bracket and supports an arm portion of a seated occupant is known (for example, Patent Documents). 1).

In the armrest mechanism described in Patent Document 1, a support shaft that rotatably connects the armrest to the support unit fixed to the seat back, and a support unit that is attached to the support unit, and that extends to the armrest side along the axial direction of the support shaft. And a fixed shaft that protrudes and restricts the rotational movement of the armrest.
The armrest is configured to rotate within a predetermined rotation range around the support shaft by engaging a fixed groove with an arc groove provided on the inner surface of the armrest.
Therefore, the armrest can move between a standing position where the armrest is erected along the seat back and a deployment position where the armrest is rotated forward of the seat to support the occupant's arm.

JP 2003-299548 A

By the way, in the seat provided with the armrest mechanism as in Patent Document 1, a gap may be generated between the armrest and the mounting bracket. If foreign matter enters from the gap, smooth rotation of the armrest may be hindered.
Therefore, a sheet that has stabilized the rotational operation of the armrest mechanism by covering the gap has been desired.
In addition, a seat that covers the gap in a compact manner and can suppress an increase in the size of the armrest mechanism has been desired.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a vehicle seat in which the rotation operation of the armrest mechanism is stabilized.
It is another object of the present invention to provide a vehicle seat that achieves compactness while ensuring a stable rotation operation of an armrest mechanism.

According to the vehicle seat of the present invention, the subject is a seat back that is a backrest portion, and is attached to a side portion of the seat back in the seat width direction via an attachment member, and supports the arm portion of a seated occupant The vehicle seat is provided with a cover member that covers an opening portion of a gap formed between the armrest and the attachment member.
As described above, the cover member that covers the opening of the gap formed between the armrest and the mounting member is provided, so that foreign objects and the like can be prevented from entering through the gap, and the rotation operation of the armrest can be stabilized. It is possible to realize the vehicle seat.
Moreover, it can prevent that a passenger | crew inserts a hand into the said clearance gap accidentally by attaching a cover member.

At this time, a rotation shaft that rotatably connects the armrest to the attachment member, and a movement restriction member that is provided in a peripheral portion of the rotation shaft and restricts the rotational movement of the armrest, The cover member may be disposed between the armrest and the attachment member and cover at least a part of the periphery of the movement restriction member.
As described above, since the cover member is disposed between the armrest and the attachment member, the armrest mechanism can be reduced in size and downsized.
In general, if a foreign object enters the periphery of the movement restricting member in the armrest mechanism, the armrest is liable to hinder the turning operation of the armrest. As described above, the cover member at least partially covers the periphery of the mobile device restricting member. Since it covers, the rotation operation of the armrest can be stabilized effectively.

At this time, the movement restricting member is a movement restricting shaft that is attached to the attachment member and protrudes toward the armrest side along the axial direction of the rotating shaft, and the armrest is provided on an inner surface of the armrest. The movement restricting hole extending along an arc centered on the rotation axis and the movement restriction shaft engage with each other so that a predetermined rotation range is rotated about the rotation axis. The cover member may be disposed and cover the periphery of the movement restriction shaft.
As described above, since the cover member covers the periphery of the mobile device restriction shaft, the rotation operation of the armrest can be more effectively stabilized.

At this time, the cover member covers the rotation shaft and the movement restricting member so as to surround the cover main body portion, and protrudes from the cover main body portion to the attachment member side, and the engaged portion provided on the attachment member And a cover engaging portion that can be engaged with each other.
As described above, the assembly rigidity of the cover member is improved by engaging the cover member with the attachment member.

At this time, the mounting member is a mounting bracket and is formed by welding in a state where the outer bracket and the inner bracket are overlapped, and the engaged portion is a portion welded in the mounting bracket. It may be provided at a different position.
As described above, since the attachment member is integrally formed by welding in a state where the outer bracket and the inner bracket are overlapped, the rigidity of the attachment member is improved. As a result, the assembly rigidity of the armrest mechanism is improved.
In addition, since the engaged portion is provided at a position different from the welded portion of the mounting bracket, it is easy to check the welding trace even after the cover member is attached.

At this time, the mounting bracket is formed by welding an outer edge portion of the mounting bracket, and the cover engaging portion protrudes from the cover main body portion so as to surround the outer edge portion, and is provided at the outer edge portion. Further, it is preferable that a part of the outer edge portion is cut away so as to be engaged with the engaged portion and avoid the welded portion.
As described above, since the cover engaging portion of the cover member is partially cut away so as to avoid the welded portion of the mounting bracket, the flexibility of the cover engaging portion can be ensured, and the cover engaging portion It becomes easy to engage with the engaged portion. Moreover, the enlargement around the cover engaging portion can be suppressed.

At this time, the outer edge portion of the outer bracket and the outer edge portion of the inner bracket are preferably welded in a partially overlapped state in the seat width direction.
With the above configuration, the mounting rigidity of the mounting bracket is improved, and welding work of each bracket is facilitated.

At this time, the cover engaging portion is formed with an engaging claw that can be latched on an engaging step provided on an outer edge portion of the mounting member, and a peripheral portion of the engaging claw, It is preferable that an opening hole for visually confirming the state of being hooked on the engagement step from the outside is provided.
As described above, since the engaging claw and the engaging step are engaged, it is not necessary to add a component such as a fastening bolt.
Moreover, since the opening hole is provided in the peripheral part of the engagement claw in the cover engagement part, the engagement state of the engagement claw can be visually confirmed.

At this time, the cover member may include a cover contact portion that extends from the outer peripheral portion of the cover main body portion toward the rotation shaft and contacts the outer surface of the attachment member.
With the above configuration, the assembly rigidity of the cover member with respect to the attachment member is further improved.

At this time, the inner surface of the cover contact portion projects in a tapered shape from the cover contact portion toward the attachment member, and can be fitted into a fitting hole provided on the outer surface of the attachment member. A fitting protrusion is preferably provided.
With the above configuration, the mounting rigidity of the cover member with respect to the mounting member is further improved, and rattling of the cover member is suppressed.

At this time, the outer peripheral portion of the cover main body may be in contact with the inner side surface of the armrest.
With the above configuration, the gap can be covered more satisfactorily by the cover member, and entry of foreign matters and the like can be further prevented.

At this time, the seat back is configured by placing a cushion pad on a back frame serving as a skeleton and covered with a skin, and an outer peripheral portion of the cover main body portion is a portion of the cushion pad in a peripheral portion of the armrest. It is good to support a part.
In general, the seat back and armrest mechanism is configured by placing a cushion pad from the outside and covering it with a skin. As described above, a part of the cover member supports a part of the cushion pad from the inside. Since the deformation of the cushion pad is suppressed, it is possible to prevent foreign matter from entering from the outside of the cushion pad first.

At this time, the attachment member is attached by welding to a side portion of a back frame that is a skeleton of the seat back, and the welded portion is disposed between an upper end and a lower end of the attachment member. good.
With the above-described configuration, the welded portion does not protrude to the upper and lower outer sides of the attachment member, so that the armrest mechanism can be prevented from being enlarged in the vertical direction.

According to the first aspect of the invention, by attaching the cover member, it is possible to prevent foreign matter and the like from entering through a gap formed between the armrest and the attachment member, and for the vehicle in which the rotation operation of the armrest is stabilized. A sheet can be realized. It is also possible to prevent an occupant from accidentally inserting his hand into the gap.
According to the second and third aspects of the invention, the armrest mechanism can be made compact by suppressing an increase in size. Moreover, the rotation operation of the armrest can be stabilized effectively.
According to invention of Claim 4, the assembly | attachment rigidity of a cover member improves.

According to invention of Claim 5, the rigidity of an attachment member improves and the assembly | attachment rigidity of an armrest mechanism improves. In addition, it is easy to check the welding marks even after the cover member is attached.
According to the sixth aspect of the invention, the flexibility of the cover engaging portion can be ensured, and the cover engaging portion can be easily engaged with the engaged portion. Moreover, the enlargement around the cover engaging portion can be suppressed.
According to the invention of claim 7, the mounting rigidity of the mounting bracket is improved, and the welding work of each bracket is facilitated.

According to the invention of claim 8, it is not necessary to add a component such as a fastening bolt. Moreover, the engagement state of the engagement claw can be visually confirmed.
According to the ninth and tenth aspects of the present invention, the mounting rigidity of the cover member with respect to the mounting member is further improved.
According to the eleventh and twelfth aspects of the present invention, it is possible to further prevent foreign matter from entering through the gap of the armrest mechanism.
According to the invention of claim 13, the enlargement of the armrest mechanism can be suppressed in the vertical direction.

It is a perspective view of a vehicular seat concerning this embodiment. It is a principal part enlarged view of FIG. 1, Comprising: It is a perspective view which shows an armrest mechanism. It is a disassembled perspective view of the armrest mechanism of FIG. It is a disassembled perspective view of the armrest mechanism seen from another angle. It is a perspective view of a cover member. It is a cross-sectional view of an armrest mechanism.

Hereinafter, a vehicle seat according to an embodiment of the present invention will be described with reference to FIGS.
The present embodiment includes an armrest that is rotatably attached to the outer surface in the seat width direction of the seat back via a mounting bracket, and covers an opening portion of a gap formed between the armrest and the mounting bracket. The present invention relates to an invention of a vehicle seat, wherein a cover member is assembled between an armrest and a mounting bracket.
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 connects the seat body to a seat body having a seat back 1, a seat cushion 2, and a headrest 3 so as to be rotatable with respect to the vehicle body floor. The reclining device 4 mainly includes an armrest 30 that is rotatably attached to the outer surface of the seat body in the seat width direction via a mounting bracket 20.
Further, a cover member 40 is assembled between the mounting bracket 20 and the armrest 30 to cover an opening portion of a gap formed between the mounting bracket 20 and the armrest 30.

The vehicle seat S is a seat that can be arranged between a use state in which an occupant can be seated and a storage state in which the seat body is stored on the vehicle body floor.
Specifically, when the occupant pulls the operation lever 1c, the vehicle seat S is folded into a seat body that is folded forward and stored in the vehicle body floor. In addition, the occupant manually lifts the seat body from the stored state to return to the use state.

As shown in FIG. 1, the seat back 1 is a backrest portion that supports the back of the occupant from the back, and the cushion pad 1a is placed on the back frame 10 of FIG. Has been configured. On the upper surface of the seat back 1, an operation lever 1c is disposed on the right side in the seat width direction.
The seat cushion 2 is a seating portion that supports an occupant from below, and is configured such that a cushion pad 2a is placed on a cushion frame (not shown) serving as a skeleton and is covered with a skin 2b from above the cushion pad 2a. ing.
The headrest 3 is a head that supports the occupant's head from behind, and is configured such that a cushion pad 3a is placed on a pillar (not shown) serving as a core and covered with an outer skin 3b.

The reclining device 4 is a known device, and rotates the seat back shaft 4a pivotally supported by the seat back 1 and the seat back 1 forward about the seat rotation shaft 4a to urge the seat back 1 to the retracted state. It is mainly composed of a spiral spring (not shown).
The reclining device 4 can be switched to a locked state that locks the pivoting movement of the seat back 1, locks the seat back 1 in the standing posture of FIG. 1, and releases the locked state by operating the operation lever 1 c. Then, the seat back 1 can be rotated forward by the urging force of the spiral spring and folded to the vehicle body floor side.

The back frame 10 is a substantially rectangular frame body serving as a skeleton of the seat back 1, and as shown in FIG. 2, a hollow cylindrical frame main body 11 formed in a rectangular frame shape, and the frame main body 11. It is mainly composed of a plate-like pan frame 12 connected to the rear surface.
An armrest 30 is rotatably mounted on the outer side surface of the side frame portion 11a that is the left and right side portions of the frame body 11 via a mounting bracket 20.
As shown in FIG. 6, the frame main body 11 is covered so as to be surrounded by the cushion pad 1 a together with the mounting bracket 20.

The mounting bracket 20 is a metal bracket for mounting the armrest 30. As shown in FIG. 3 and FIG. 4, the mounting bracket 20 is formed of a substantially semi-elliptical body and is disposed on the inner side in the seat width direction. The outer bracket 22 is arranged mainly on the outer side of the inner bracket 21.
The inner bracket 21 and the outer bracket 22 are assembled as a hollow body by being welded in a state where their outer edge portions are partially overlapped in the seat width direction.
Specifically, the outer edge portions of the outer bracket 22 project in a direction facing each other and are overlapped so that the outer edge portion of the outer bracket 22 covers the entire outer periphery of the outer edge portion of the inner bracket 21. .

On the inner side surface of the mounting bracket 20 in the seat width direction, a bracket connecting portion 23 is provided that extends toward the side frame portion 11a and is in contact with and connected to the surface of the side frame portion 11a.
The bracket connecting portion 23 extends in the vertical direction along the side frame portion 11a, and an upper portion and a lower portion thereof are welded and connected to the side frame portion 11a.
The welded portion is disposed between the upper end and the lower end of the mounting bracket 20.

On the outer surface of the mounting bracket 20 in the sheet width direction, a rotation shaft hole 24 penetrating in the sheet width direction, a movement restriction shaft hole 25 provided in the periphery of the rotation shaft hole 24 and penetrating in the sheet width direction, Is formed.
A rotation shaft 32 that rotatably connects the armrest 30 is pivotally supported in the rotation shaft hole 24, and the movement restricting shaft hole 25 is arranged on the armrest 30 side along the axial direction of the rotation shaft 32. A movement restricting shaft 33 that projects and restricts the rotational movement of the armrest 30 is pivotally supported.

The armrest 30 is a member that supports the arm portion of a seated occupant. As shown in FIGS. 3 and 4, a cushion pad (not shown) is placed on an armrest frame 31 that is a skeleton, and an epidermis (not shown) It is constituted by being covered with.
Attached along the axial direction to the inner side surface of the armrest frame 31 in the seat width direction is a projection that protrudes toward the mounting bracket 20 along the axial direction of the rotating shaft 32 and supports the rotating shaft 32. A movement restricting hole 31b is formed which is recessed on the side opposite to the bracket 20 side and extends along an arc with the rotation shaft 32 as the center.
The support convex portion 31 a penetrates the cover member 40 and contacts the outer surface of the mounting bracket 20.

The armrest 30 is configured to rotate within a predetermined rotation range about the rotation shaft 32 by engaging the movement restriction hole 31 b and the movement restriction shaft 33.
Specifically, the armrest 30 can move between a standing position where the armrest 30 is erected along the seat back 1 and a deployed position where the armrest 30 is rotated forward of the seat and supports the arm portion of the occupant.

The cover member 40 is a member that covers the gap between the mounting bracket 20 and the armrest 30 and is assembled between the mounting bracket 20 and the armrest 30 as shown in FIGS.
The cover member 40 protrudes toward the mounting bracket 20 from the cover main body 41 and covers the rotation shaft 32 and the movement restricting shaft 33 so as to be able to engage with the outer edge of the mounting bracket 20. The main cover engaging portion 43 is mainly configured.

The cover body portion 41 has an outer side surface in the seat width direction in contact with the inner side surface of the armrest 30, and an inner side surface in the seat width direction in contact with the outer side surface of the mounting bracket 20.
A cover contact portion 42 is formed on the inner side surface of the cover main body portion 41 so as to extend from the outer peripheral portion toward the rotation shaft 32 and to contact the outer surface of the mounting bracket 20.

As shown in FIG. 4, a rotation shaft hole 42 a and a movement restriction shaft hole 42 b for allowing the rotation shaft 32 and the movement restriction shaft 33 to pass through are formed on the surface of the cover contact portion 42.
The rotation shaft hole 42a and the movement restriction shaft hole 42b are formed as continuous through holes, and the rotation shaft hole 42a is fitted to the support convex portion 31a when the armrest 30 is assembled to the cover member 40. It is the composition to do.

A pair of fitting protrusions 42 c that protrude in a tapered shape toward the mounting bracket 20 are formed on the inner side surface of the cover contact portion 42.
The pair of fitting protrusions 42 c are arranged at positions sandwiching the rotation shaft 32, and are provided at positions where the fitting protrusions 42 c can be fitted into the fitting holes 26 provided on the outer surface of the mounting bracket 20.

As shown in FIGS. 4 and 5, the cover engaging portion 43 protrudes from the cover main body portion 41 so as to surround the outer edge of the mounting bracket 20, engages with an engagement step 27 provided on the outer edge, and The outer edges are notched at intervals to avoid welds.
More specifically, the cover engaging portion 43 is formed with four engaging claws 44 that can be hooked on the engaging step 27 of the mounting bracket 20 with a space therebetween.
In an adjacent portion of the engaging claw 44, an opening hole 45 for visually confirming the state where the engaging claw 44 is hooked on the engaging step 27 is formed from the outside.

In the above configuration, when the armrest mechanism is assembled to the side frame portion 11a, the outer peripheral portions of the cover main body portion 41 and the cover engaging portion 43 are located around the armrest 30 in the seat front-rear direction as shown in FIG. A part of the pad 1a is supported.
Therefore, deformation of the cushion pad 1a is suppressed, and foreign matter can be prevented from entering the armrest mechanism from the outside of the cushion pad 1a.

<Other embodiments>
In the above embodiment, as shown in FIG. 2, the armrest 30 is assembled so as to be rotatable between the standing position and the deployed position, but is not particularly limited, and is always supported at the deployed position. Alternatively, it may be configured by switching between the storage position and the deployment position by a known mechanism other than the rotation mechanism.

In the above embodiment, as shown in FIGS. 4 and 5, the cover engaging portion 43 is notched at intervals in order to avoid the welded portion on the outer edge of the mounting bracket 20. It is desirable to form smoothly so as to form a substantially arc shape.
By doing so, the flexibility of the cover engaging portion 43 can be improved, and the cover engaging portion 43 can be more easily engaged with the engaging step 27 of the mounting bracket 20.

In the above embodiment, as shown in FIG. 5A, the surface on which the engaging claw 44 is latched to the mounting bracket 20 and the surface on which the cover contact portion 42 contacts the mounting bracket 20 are substantially parallel. It is formed to be a surface.
Therefore, the assembly rigidity of the cover member 40 to the mounting bracket 20 is improved.

  In the above-described embodiment, a vehicle seat used for an automobile is described as a specific example. However, the seat is not particularly limited, and is used as a vehicle seat for an airplane, a ship, etc. in addition to a vehicle seat for a train, a bus, etc. be able to.

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.

DESCRIPTION OF SYMBOLS S Vehicle seat 1 Seat back 1a, 2a, 3a Cushion pad 1b, 2b, 3b Skin 1c Operation lever 2 Seat cushion 3 Headrest 4 Reclining device 4a Seat rotating shaft 10 Back frame 11 Frame main body 11a Side frame part 12 Pan frame 20 Mounting bracket 21 Inner bracket 22 Outer bracket 23 Bracket connecting portion 24 Rotating shaft hole 25 Movement restriction hole 26 Fitting hole 27 Engagement step 30 Armrest 31 Armrest frame 31a Supporting convex portion 31b Movement restriction hole 32 Rotating shaft 33 Movement restriction shaft 40 Cover member 41 Cover body portion 42 Cover contact portion 42a Rotating shaft hole 42b Movement restricting shaft hole 42c Fitting protrusion 43 Cover engaging portion 44 Engaging claw 45 Opening hole

Claims (13)

A seat back as a backrest part,
An armrest attached to a side portion of the seatback in the seat width direction via an attachment member and supporting an arm portion of a seated occupant,
A vehicle seat comprising a cover member covering an opening portion of a gap formed between the armrest and the mounting member. A pivot shaft for pivotally connecting the armrest to the attachment member;
A movement restricting member that is provided in a peripheral portion of the rotation shaft and restricts the rotational movement of the armrest,
The vehicle seat according to claim 1, wherein the cover member is disposed between the armrest and the attachment member and covers at least a part of the periphery of the movement restriction member. The movement restriction member is a movement restriction shaft that is attached to the attachment member and protrudes toward the armrest side along the axial direction of the rotation shaft,
The armrest is provided on an inner surface of the armrest, and a movement restricting hole that extends along an arc centered on the rotation axis engages with the movement restriction shaft, whereby the armrest is centered on the rotation axis. Arranged to rotate within a predetermined rotation range,
The vehicle seat according to claim 2, wherein the cover member covers the periphery of the movement restriction shaft. The cover member is
A cover main body that covers the rotation shaft and the movement restricting member;
The cover engaging part which protrudes from the said cover main-body part to the said attachment member side, and can be engaged with the to-be-engaged part provided in this attachment member is provided. Vehicle seats. The mounting member is a mounting bracket and is formed by welding in a state where the outer bracket and the inner bracket are overlapped,
The vehicle seat according to claim 4, wherein the engaged portion is provided at a position different from a welded portion of the mounting bracket. The mounting bracket is formed by welding an outer edge portion of the mounting bracket,
The cover engaging portion protrudes from the cover main body portion so as to surround the outer edge portion, engages with the engaged portion provided on the outer edge portion, and avoids a portion welded at the outer edge portion. The vehicle seat according to claim 5, wherein the vehicle seat is cut away.   The vehicle seat according to claim 5 or 6, wherein the outer edge portion of the outer bracket and the outer edge portion of the inner bracket are welded in a state of being partially overlapped in the seat width direction.   The cover engaging portion is formed with an engaging claw that can be latched on an engaging step provided on an outer edge portion of the mounting member, and a peripheral portion of the engaging claw, and the engaging claw is formed on the engaging claw. The vehicle seat according to any one of claims 4 to 7, further comprising an opening hole for visually recognizing the state of being hooked to the step.   The said cover member is provided with the cover contact part extended toward the said rotating shaft from the outer peripheral part of the said cover main-body part, and contact | abuts the outer surface of the said attachment member. The vehicle seat according to any one of the above.   On the inner side surface of the cover abutting portion, a fitting protrusion that projects from the cover abutting portion toward the mounting member side and can be fitted into a fitting hole provided on the outer side surface of the mounting member. The vehicle seat according to claim 9, wherein the vehicle seat is provided.   The vehicle seat according to any one of claims 4 to 10, wherein an outer peripheral portion of the cover main body is in contact with an inner surface of the armrest. The seat back is configured by placing a cushion pad on a back frame serving as a skeleton and being covered with an outer skin,
The vehicle seat according to any one of claims 4 to 11, wherein an outer peripheral part of the cover main body part supports a part of the cushion pad in a peripheral part of the armrest. The attachment member is attached by welding to a side portion of a back frame that becomes a skeleton of the seat back,
The vehicle seat according to any one of claims 1 to 12, wherein the welded portion is disposed between an upper end and a lower end of the attachment member.

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