JP6605350B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat.

  There is a vehicle seat in which an assist grip is provided on the back surface of the seat back so that the rear seat occupant supports the body when the vehicle travels and is used as a handrail by the rear seat occupant when the vehicle gets on and off. In such a seat, the rear-seat occupant can hold the assist grip to support the body when standing up from a seated state or when the body is shaken by a large acceleration in the front-rear or left-right direction. In addition, the rear seat occupant can move so as not to break the balance of the body while getting on and sliding from the end of the assist grip when getting on and off the vehicle. Patent Document 1 discloses a vehicle seat in which an assist grip having a grip portion bent upward is provided on a rear upper portion of a seat back in the left-right direction. The assist grip can be attached to one side of the back surface of the seat back so that the base portion extends in the vertical direction by the engagement / disengagement device.

JP2015-104991A

  In a one-box type vehicle where the height of the upper part of the seat back from the floor may be set higher than that of a sedan type vehicle, there are cases where it is desired to use the assist grip as a handrail when getting on and off. At this time, since the base part of the assist grip disclosed in Patent Document 1 is held by the left and right axes by the engagement / disengagement device, a large force is applied to the grip part from above to raise the body to the height of the floor. There was a risk that the detaching device could be detached or damaged. Further, if the engagement / disengagement device is configured to be held by a plurality of left and right shafts so as to be able to withstand a large force from above, the attachment may be complicated.

  In view of such a demand, an object of the present invention is to provide a vehicle seat in which an easy-to-use assist grip as a handrail at the time of getting on and off is secured to the upper portion of the back of the seat back and is simply attached.

  The first invention of the present invention is a vehicle seat, wherein an assist grip extending in the seat width direction is provided at an upper rear portion of the seat back, and the assist grip is manually provided from at least one of end portions in the width direction. A grip part capable of sliding the hand in the seat width direction in a gripped state, and attachment parts connected to both ends of the grip part in the seat width direction, each of the attachment parts being the seat back A locking portion having a hook portion that is rotatably locked in the front-rear direction with respect to the locked portion provided on the seat portion, and the seat back provided on the upper or lower portion of the locking portion. And a fixing portion fixed so as not to rotate.

  According to the first invention, the rear seat occupant can not only use the assist grip as a body support during traveling, but also can use the assist grip as a handrail when getting on and off the vehicle. In addition, it can be easily attached with sufficient strength. That is, the assist grip is attached to the seat back at the engaging portion and the fixing portion at both ends in the width direction, and the fixing grip is attached to the seat back while the engaging portion is locked to the locked portion from above. Since it only has to be fixed, the mounting strength against the force from above is high and the mounting workability is good.

  According to a second aspect of the present invention, in the first aspect, the locked portion is a linear member extending in the seat width direction in the back frame of the seat back, and the cross-sectional shape thereof is circular. Features.

  According to the second aspect of the present invention, since the cross-sectional shape of the locked portion is circular, when the hook portion of the locking portion is locked from above, the angle of the assist grip that approaches the locked portion with respect to the front-rear direction angle posture The allowable width is large and mounting workability is improved.

  According to a third aspect of the present invention, in the first aspect or the second aspect, the grip portion and the attachment portion or the back surface of the seat back are provided in a portion where the grip portion and the attachment portion are not connected. A through hole penetrating in the vertical direction is formed between the two.

  According to the third aspect of the present invention, the grip portion can be shaped so as to be easily grasped when the occupant rotates his / her finger. In addition, since a through-hole penetrating in the vertical direction is formed between the attachment portion or the back of the seat back in a portion where the attachment portion of the grip portion is not connected, the grip portion and the attachment portion or the back of the seat back It is possible to prevent trash from being put in between.

  According to a fourth invention of the present invention, in any one of the first to third inventions, a soft part that is softer than other parts of the assist grip is provided on a part of the surface of the grip part. Features.

  According to the fourth aspect of the invention, it is possible to improve the feel when gripping the grip and to make it difficult to slip when used as a handrail.

  According to a fifth aspect of the present invention, in the fourth aspect, the soft portion is colored in a color different from other portions of the assist grip.

  According to the fifth aspect of the present invention, it is possible to clearly indicate the part to be gripped to the occupant and urge the use without error.

It is the perspective view which looked at the seat for vehicles of one embodiment of the present invention from the slanting back. It is the front view which looked at the state where the assist grip was attached to the seat back of the seat for vehicles of the above-mentioned embodiment from back. The headrest is omitted. It is the side view which looked at the state where the assist grip was attached to the seat back of the car seat of the above-mentioned embodiment from the left. The headrest is omitted. FIG. 4 is a sectional view taken along the line IV-IV in FIG. 2. It is a VV arrow line sectional view of Drawing 2. FIG. 6 is a sectional view taken along the line VI-VI in FIG. 3. It is a VII-VII arrow directional cross-sectional view of FIG.

  1 to 7 show an embodiment of the present invention. This embodiment shows an example in which the present invention is applied to an automobile seat. In each figure, each direction when the automobile seat is attached to the automobile is indicated by an arrow. In the following description, the description regarding the direction is made based on this direction. The vehicle seat 1 of the present embodiment includes a seat cushion 10 serving as a seating portion, a seat back 20 serving as a backrest, a headrest 30 supporting the head, and an assist grip 40 attached to the seat back 20. I have.

  As shown in FIG. 1, the seat cushion 10, the seat back 20, and the headrest 30 include frames 11, 21, and 31 that form a skeleton, pads 12, 22, and 32 that are cushion materials, and a skin 13 that is a skin material, respectively. , 23, 33. Since the seat cushion 10 and the headrest 30 have known configurations, the description thereof will be omitted, and the seat back 20 and the assist grip 40 will be described. Here, the automobile seat 1 corresponds to the “vehicle seat” in the claims.

  As shown in FIG. 2, the frame 21 of the seat back 20 is made of iron, and a pair of left and right side frames 24 extending in the vertical direction, an upper frame 25 connecting between the upper ends of the side frames 24, and the side frames 24. And a lower pipe 26 for connecting the lower end portions of the two, and is formed in a substantially rectangular shape in front view. The side frame 24 is a substantially U-shaped press-molded member having a cross-section in the left-right direction opened in the seat inner direction. The upper frame 25 is a member formed by bending a pipe having a circular cross-section into a substantially U shape that opens downward in a front view. A pair of left and right corner panels 27 are attached to the left and right seat inner corner portions of the upper frame 25. The corner panel 27 is a member for fixing an assist grip 40 described later to the seat back 20. A locking wire 27 a having a circular cross section for fixing the assist grip 40 is attached to the lower portion of the corner panel 27. In addition to this, a headrest bracket for attaching the headrest 30, a member for fixing the headrest bracket, a wire for supporting the pad 22, and the like are attached to the frame 21, but the member is not related to the present invention. Illustration and description are omitted. The locking wire 27a corresponds to a “locked portion” in the claims.

  As shown in FIGS. 2, 5, and 7, the left and right corner panels 27 are press-formed members that are symmetrical with respect to a plane perpendicular to the seat back 20 seating surface at the seat center in the left-right direction. The corner panel 27 will be described. The corner panel 27 has a substantially rectangular shape when viewed from the rear, and has an upper bracket 27b for welding and fixing to the rear surface of the upper pipe of the upper frame 25 at the upper left end, and a side portion of the upper frame 25 at the lower right end. And a lower bracket 27c for welding and fixing to the rear surface of the pipe. The corner panel 27 has a mounting flat portion 27d that protrudes rearward and downward slightly below the left vertical center portion. The mounting flat portion 27d is provided with a bolt hole 27d1 on the upper side and positioned on the lower side. A hole 27d2 is provided. A nut 44 for fastening the bolt 43 corresponding to the bolt hole 27d1 is connected to the front side of the mounting flat portion 27d by welding. The bolt hole 27d1 and the positioning hole 27d2 are for attaching the assist grip 40 to the corner panel 27. The locking wire 27a is a member formed in a substantially U shape when the wire is viewed from the rear, and is fixed to the lower side of the corner panel 27 by welding.

  As shown in FIGS. 2 to 7, the assist grip 40 is a resin molded part, and includes an outer cover 41 and an inner cover 42. The outer cover 41 is a resin injection molded product, and is formed of, for example, polypropylene resin. The outer cover 41 has a pair of left and right columnar portions 41a extending in the vertical direction while curving backward in a substantially U shape with a cross section in the left-right direction opening forward at the left and right ends. Further, the outer cover 41 has a substantially U-shaped base portion 41b in which a cross section in the vertical direction that connects the inner side walls of the pair of left and right columnar portions 41a from the central portion in the vertical direction to the lower portion opens toward the front. Further, the outer cover 41 has a grip rear surface portion 41c that connects upper end portions of the pair of left and right columnar portions 41a. The grip rear surface portion 41c is separated rearward from the base portion 41b, and an opening 41d is formed therebetween. Here, the opening 41 d corresponds to a “through hole” in the claims.

  As shown in FIGS. 5 and 7, a substantially rectangular parallelepiped protruding portion 41 a 1 extending toward the front upper side is provided at a substantially central portion in the vertical direction of the left and right columnar portions 41 a. A bolt hole 41a111 is provided at the center of the front surface portion 41a11 of the protruding portion 41a1, and a step portion 41a121 is provided at a portion where the side surface portion 41a12 which is the upper, lower, left and right surfaces of the protruding portion 41a1 is connected to the general surface portion of the columnar portion 41a. Is formed. A portion surrounded by four steps by the step portion 41a121 is open, and when the outer peripheral portion of the lid 41a2 is fitted into the step portion 41a121, the outer surface of the lid 41a2 is flush with the general surface portion of the columnar portion 41a. . Locking portions 41a21 extending toward the front surface portion 41a11 along the left and right side surface portions 41a12 when the outer peripheral portion of the lid 41a2 is fitted into the stepped portion 41a121 are provided at the left and right end portions of the lid 41a2. A protrusion projecting toward the outside of the lid 41a2 is provided at the tip of the locking portion 41a21. When the outer periphery of the lid 41a2 is fitted into the step 41a121, the protrusion of the left and right side parts 41a12 is provided. The lid 41a2 is attached to the outer cover 41 by engaging with a locking hole 41a122 provided in the vicinity of the portion 41a121. The lid 41a2 is made of the same resin material as the outer cover 41 and has the same color. The bolt hole 41 a 111 is a hole through which a bolt for attaching the outer cover 41 to the frame 21 of the seat back 20 is passed. A plate-like locking portion 41a3 is provided on the lower front surface of the left and right columnar portions 41a. A substantially U-shaped locking hole 41a31 opening toward the front lower side is formed in the lower part of the locking part 41a3, and a protrusion 41a32 is formed in the vicinity of the opening of the locking hole 41a31. The locking hole 41 a 31 is for locking the outer cover 41 to the locking wire 27 a of the frame 21 of the seat back 20. Further, the protrusion 41a32 is provided to prevent the locking wire 27a from coming off from the locking hole 41a31 when the locking portion 27a is locked to the locking wire 27a. The locking hole 41a31 and the protrusion 41a1 correspond to a “hook part” and a “fixing part” in the claims, respectively.

  As shown in FIGS. 2, 4, and 7, the left and right end portions of the base portion 41 b are connected to the inner wall portion of the left and right columnar portions 41 a. When the outer cover 41 is attached to the seat back 20, a space portion 41e formed between the outer cover 41 and the seat back 20 is formed continuously and integrally in the left and right columnar portions 41a and the base portion 41b. A USB connector or the like may be disposed on the rear surface side of the base portion 41b, but is omitted in this embodiment.

  As shown in FIGS. 2 and 4 to 6, the grip rear surface portion 41 c is formed such that the left and right end portions thereof are connected to the upper end portions of the left and right columnar portions 41 a and extend in the left-right direction over the entire width of the outer cover 41. Has been. The left and right end portions of the grip rear surface portion 41c are formed to extend upward from the left and right columnar portions 41a, and the cross section in the vertical direction is opened toward the front and upper side between the left and right end portions as shown in FIG. It is formed in a substantially U shape. On the grip rear surface portion 41c, five screw tightening seat portions 41c1 for fixing the inner cover 42 with screws are arranged side by side in the center direction. Each seat 41c1 is arranged in a state in which the axis of the screw tightening hole at the tip is directed forward and upward.

  2 to 7, the inner cover 42 is disposed with respect to the outer cover 41 so as to face the front surface of the grip rear surface portion 41c on the upper front side of the outer cover 41 and the upper front surface of the left and right columnar portions 41a. This is a resin injection molded product. In the inner cover 42, the portion facing the front surface of the grip rear surface portion 41c on the upper front side of the outer cover 41 is the grip front surface portion 42b, and the portion facing the upper front surfaces of the left and right columnar portions 41a of the outer cover 41 is the inner cover. It is a columnar part 42a. The inner cover 42 has a main body 42A made of, for example, a polyamide resin containing glass fiber, and the surface of the portion exposed to the external appearance of the main body 42A is molded with, for example, two colors of thermoplastic elastomer (TPO) resin as a surface portion 42B. Yes. The reason why the TPO resin is molded in two colors on the surface portion 42B is to improve the tactile sensation when touched by the hand. As shown in FIG. 5, an extending portion 42a1 extending downward and forward is provided below the inner cover columnar portion 42a, that is, below the left and right end portions of the main body portion 42A, and a bolt is provided at a substantially central portion in the vertical direction of the extending portion 42a1. A hole 42a11 is provided, and a positioning pin portion 42a12 is disposed at the lower end portion of the extending portion 42a1 so as to extend forward and upward. On the outer periphery of the bolt hole 42a11, a ring-shaped spacer portion 42a13 is provided on both the front and rear surfaces. As shown in FIG. 6, the main body portion 42A of the grip front surface portion 42b has a concave portion 42b1 in which a screw hole 42b11 for fixing the inner cover 42 to the rear surface portion 41c of the grip with a screw is disposed in the left-right direction. Five are arranged side by side in the center distribution. Further, four positioning holes 42b2 for positioning and mounting a display panel 42C to be described later are arranged side by side in the center between the recesses 42b1 in the left-right direction. Here, the grip rear surface portion 41 c of the outer cover 41 and the grip front surface portion 42 b of the inner cover 42 correspond to a “grip portion” in the claims. Further, the columnar portion 41a and the base portion 41b of the outer cover 41 and the inner cover columnar portion 42a of the inner cover 42 correspond to an “attachment portion” in the claims.

  As shown in FIGS. 4 to 6, the display panel 42 </ b> C is attached to the front surface side of the main body portion 42 </ b> A of the grip front surface portion 42 b. The display panel 42C indicates that the assist grip 40 conforms to the universal design and clearly indicates the position of the grip that the occupant uses when getting on and off. The display panel 42 </ b> C is formed of a polybutylene terephthalate (PBT) resin colored in a conspicuous color, for example, yellow so as to sufficiently perform the display function when the other part of the assist grip 40 is black. The PBT resin is used because it is a part that can be easily touched by the hand, and is intended to have a soft feel. On the rear surface of the display panel 42C, four protrusions 42C1 are arranged in the left-right direction at positions corresponding to the positioning holes 42b2 of the main body 42A of the grip front surface 42b. Here, the display panel 42 </ b> C corresponds to a “soft part” in the claims.

  A procedure for fixing the assist grip 40 to the seat back 20 will be described. First, the inner cover 42 is attached to the outer cover 41. Specifically, the screw tightening hole of the screw tightening seat portion 41c1 of the grip rear surface portion 41c of the outer cover 41 and the screw hole 42b11 of the recess 42b1 of the inner cover 42 are aligned and fixed by screw tightening. At this time, the spacer portion 42a13 on the outer periphery of the bolt hole 42a11 of the inner cover 42 is inserted into the bolt hole 41a111 of the outer cover 41, so that the inner cover 42 is positioned more reliably with respect to the outer cover 41. Next, with the projection 42C1 of the display panel 42C inserted and positioned in the positioning hole 42b2 of the main body 42A of the grip front surface 42b of the inner cover 42, the display panel 42C is positioned with respect to the main body 42A of the grip front surface 42b. Fix by gluing. Next, in a state where the locking hole 41a31 of the locking portion 41a3 of the outer cover 41 is locked to the locking wire 27a of the corner panel 27, the bolt hole 41a111 of the outer cover 41, the bolt hole 42a11 of the inner cover 42, The bolt holes 27d1 of the corner panel 27 are made to coincide with each other and fastened with bolts 43 and nuts 44. Specifically, since the bolt hole 41a111 of the outer cover 41 and the bolt hole 42a11 of the inner cover 42 are already integrated by fitting the bolt hole 41a111 and the spacer part 42a13, the positioning pin part 42a12 of the inner cover 42 is provided. The bolt hole 41a111 and the bolt hole 42a11 are inserted into the positioning hole 27d2 of the corner panel 27, and the bolt hole 27d1 is matched. As a result, the assist grip 40 is attached without gaps while the front ends of the outer cover 41 and the inner cover 42 are bitten into the seat back 20 while the pad 22 is deformed. Finally, the lid 41a2 is fitted and fixed to the step 41a121 of the protrusion 41a1 of the outer cover 41.

  The embodiment configured as described above has the following operational effects. The grip portion of the assist grip 40 can be slid in the seat width direction with the hand gripped from any end in the width direction. As a result, when the passenger in the rear seat gets into the vehicle, the grip portion of the assist grip 40 can be used as a handrail by gripping the grip portion from the end portion. Further, when getting off the car, the grip part of the assist grip 40 can be used as a handrail by gripping it to the end, so that it can get off without anxiety. The assist grip 40 is attached to the seat back 20 at the locking portion 41a3 and the protruding portion 41a1. And the attachment should just be fastened and fixed to the seat back 20 with the volt | bolt 43 and the nut 44 in the state which latched the latching hole 41a31 of the latching | locking part 41a3 to the latching wire 27a from the upper direction. As a result, the assist grip 40 is attached with high strength against the force from above, and its attachment workability is good.

  Further, since the cross-sectional shape of the locking wire 27a is circular, when the locking hole 41a31 of the locking part 41a3 is locked from above, the allowable width of the front and rear angle posture of the assist grip 40 to be approached is large. Installation workability is good. Further, when the assist grip 40 is fixed to the seat back 20, a grip part in which the grip rear surface part 41c of the outer cover 41 and the grip front part 42b of the inner cover 42 are integrated, a base part 41b of the outer cover 41, An opening 41d is formed between the two. Accordingly, it is possible to suppress dust and the like from being inserted between the grip portion and the base portion 41b.

  Further, a yellow display panel 42C made of PBT resin is attached to the grip front surface portion 42b of the inner cover 42. As a result, it is possible to improve the feel when grasping the grip, to make it difficult to slip when used as a handrail, and to urge the occupant to indicate the part to be gripped and to use it without error. it can. In addition, the inner cover 42 has a high tactile sensation because the main body portion 42A is made of high-strength glass fiber-containing polyamide resin and the surface portion 42B is molded with two colors of TPO resin. That is, it is possible to ensure strength and suppress deterioration of tactile sensation.

  As mentioned above, although specific embodiment was described, this invention is not limited to those external appearances and structures, A various change, addition, and deletion are possible in the range which does not change the summary of this invention. For example, the following can be mentioned.

  1. In the above embodiment, the base portion 41b is disposed between the left and right columnar portions 41a of the outer cover 41. However, the present invention is not limited to this, and the sheet between the left and right columnar portions 41a without the base portion 41b being disposed. You may comprise so that the back surface part of the back | bag 20 may appear.

  2. In the above embodiment, the assist grip 40 is made of resin. However, the assist grip 40 is not limited to this and may be made of wood or metal. For example, a metal pipe may be bent and attached to the seat back 20 in a substantially U shape that opens downward in a rear view and a substantially U shape that opens forward in a top view.

  3. In the above embodiment, the assist grip 40 is attached to the upper back of the seat back 20, but it may be attached to the back of the headrest. In addition, in the headrest integrated seat back, the seat back may be attached to a portion corresponding to the headrest.

  4). In the above embodiment, the protrusion 41 a 1 is fixed to the corner panel 27 by fastening the bolt 43 and the nut 44. However, the present invention is not limited to this, and a part of the protruding portion 41a1 may be fitted into a hole provided in the corner panel 27, or other mechanical connection means such as rivet connection may be employed.

  5. In the above embodiment, the present invention is applied to an automobile seat, but may be applied to a seat mounted on an airplane, a ship, a train, or the like.

1 Car seat (vehicle seat)
20 Seat back 27a Locking wire (locked part)
40 Assist grip 41 Outer cover 41a Columnar part (mounting part)
41a1 Protruding part (fixed part)
41a3 Locking part 41a31 Locking hole (hook part)
41b Base part (mounting part)
41c Grip rear surface (grip)
41d Opening (through hole)
42 Inner cover 42a Inner cover columnar part (mounting part)
42b Grip front (grip)
42C Display panel (soft part)

Claims (5)

A vehicle seat,
An assist grip extending in the seat width direction is provided at the upper back of the seat back,
The assist grip is Oite the seatback hand while gripping hand from at least one end portion in the width direction and a grip portion which can be slid in the sheet width direction, the seat width direction end portions of the grip portion A pair of left and right mounting portions connected to each other ,
Each of the attachment portions includes a locking portion having a hook portion that is rotatably locked in a front-rear direction with respect to a locked portion provided on the seat back, and an upper portion of the locking portion or a vehicle seat having a fixed portion which is non-rotatably fixed to the seat back which is provided so as to be positioned side by side in the vertical direction with respect to Oite the locking portion to the lower portion.   The vehicle seat according to claim 1, wherein the locked portion is a linear member that extends in a seat width direction in a back frame of the seat back, and has a circular cross-sectional shape.   In Claim 1 or Claim 2, it penetrates in the up-and-down direction between the above-mentioned grip part and the back of the above-mentioned attachment part or the above-mentioned seat back in the portion where the above-mentioned grip part and the above-mentioned attachment part are not connected. A vehicle seat in which holes are formed.   4. The vehicle seat according to claim 1, wherein a soft portion that is softer than other portions of the assist grip is provided on a part of the surface of the grip portion.   5. The vehicle seat according to claim 4, wherein the soft portion is colored in a color different from other portions of the assist grip.

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