JP5627353B2 - Seat device - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a seat device including a reclining mechanism that supports a backrest to be able to tilt backward on a rear end side of a seat portion and can adjust an inclination angle of the backrest, and in particular, a passenger installed in a railway vehicle or the like. The present invention relates to a seat device for use.

  2. Description of the Related Art Conventionally, there are passenger seat devices equipped on railway vehicles and the like that include a reclining mechanism for providing a comfortable sitting comfort. In such a seat device, a seated person generally can recline the backrest held on the rotating shaft by pushing the backrest backward with the back. Furthermore, as disclosed in Patent Document 1, for example, a seat device is known in which the seat moves in conjunction with reclining of the backrest.

  That is, a base plate is placed on the vehicle body, an arm is pivotally supported on the base plate, a backrest is fixed to the arm, and one end of the interlocking plate is pivotally attached to the arm. The other end is fixed to the rear part of the seat. Here, the base plate is provided with a lock mechanism portion that supports the front portion of the seat portion so as to be movable in the front-rear direction on a bracket placed on the vehicle body, and adjusts the tilt of the arm to a desired tilt angle.

  In such a seat device, when the locking mechanism is operated to recline the backrest in a state where the arm can be tilted backward, the interlocking plate is pulled backward and lowered, and the rear portion of the seat is lowered while moving backward. At the same time, the front portion of the seat moves backward. In this manner, the rear part of the seat part moves simultaneously downward and rearward in conjunction with the reclining of the backrest, and the seating surface angle of the seat part is automatically changed according to the inclination angle of the backrest.

JP-A-8-214977

  In the seat device described in Patent Document 1 described above, the seating surface angle of the seat portion changes according to the inclination angle of the backrest, so that the hip point shift is reduced, and a relaxed posture can be maintained. The structure for supporting the seat itself so that it can move is complicated, and the link mechanism for interlocking with the reclining of the backrest is also complicated, increasing the number of parts, increasing the number of assembly steps, increasing the weight, and increasing the cost. There was also a problem in terms of maintenance.

  The present invention has been made paying attention to the problems of the conventional techniques as described above, and can reduce or eliminate hip point deviation and back deviation feeling when reclining, improving sitting comfort. An object of the present invention is to provide a seat device that can be easily manufactured with a simple configuration, can be reduced in weight and cost, and has excellent maintainability.

The gist of the present invention for achieving the object described above resides in the inventions of the following items.
[1] In a seat device (10) provided with a reclining mechanism that supports a backrest (21) to be able to tilt backward on the rear end side of the seat (11) and can adjust an inclination angle of the backrest (21). ,
A backrest frame (210) that constitutes the backrest (21), a seat frame (110) that constitutes the seat (11), and a series of fabric members that stretch between the frames (110, 120) ( 30)
The fabric member (30) has one end side (31) fastened to the upper side of the backrest frame (210) and extends downward along the seating surface of the backrest (21). 11) wraps around the rear end and extends forward below the seat (11) along the seating surface, and the other end (32) extending forward is fastened to the front of the seat frame (110). In such a state, from the backrest (21) to the seat portion (11), it extends into a shape that holds the seated person in accordance with the posture of the seated person according to the inclination angle of the backrest (21). A seat device (10) characterized by the above.

[2] A bar member (212) extending in parallel with the rotation center at which the backrest (21) tilts is installed at the lower end of the backrest frame (210),
The middle of the fabric member (30) extending downward along the seating surface of the backrest (21) is passed through the front side of the bar member (212) and then wraps around the rear end of the seat portion (11). The seat device (10) according to [1], wherein

  [3] The seat device (10) according to [1] or [2], wherein the fabric member (30) is made of a stretchable fabric.

  [4] At least one of the backrest (21) and the seat (11) is provided with cushions (41 to 44) made of an elastic material along the front side of the fabric member (30). The seat device (10) according to [1], [2] or [3], which is characterized.

  [5] The seat device (10) according to [4], wherein the cushion (41 to 44) is covered with an outer skin member (51, 52) made of the same material as the fabric member (30).

The present invention operates as follows.
According to the seat device (10) described in [1], the backrest (21) tilts backward with the rotation center of the reclining mechanism as a fulcrum, and the seated person can adjust and support the tilt angle to a desired angle. it can. The posture of the seat occupant changes according to the inclination angle of the backrest (21), but extends from the backrest (21) to the front side of the seat frame (110) along the seating surface from below the seat portion (11). The stretched fabric member (30) stretches naturally into a shape optimal for the seating person's holding ability in accordance with the change of the seating person's posture. Here, the fabric member (30) is stretched in a hammock shape from the upper side of the backrest frame (210) to the front side of the seat frame (110).

  Thus, according to the reclining operation of the backrest (21) by the seated person, the shape of the fabric member (30) is changed, and the seated person can always be held in an optimal posture. Accordingly, it is possible to relieve / eliminate the hip point displacement and back misalignment of the seated person and also improve the hold feeling. Moreover, since there is no gap between the backrest (21) and the seat (11), the structure is difficult to drop. In addition, it can be easily manufactured with a simple configuration using the fabric member (30), can realize stable operation, light weight and cost reduction, and is excellent in maintainability.

  According to the seat device (10) described in [2], the bar member (212) extending in parallel with the center of rotation at which the backrest (21) tilts is installed at the lower end of the backrest frame (210). The cloth member (30) extending downward along the seating surface of the fold (21) is passed through the front side of the bar member (212) and then wraps around the rear end of the seat portion (11).

  As a result, in the process of reclining the backrest (21), the fabric member (30) in the vicinity between the backrest (21) and the seat (11) comes into contact with the bar member (212) and sits. (11) Pushed to the side. Therefore, the fabric member (30) does not hang down in the vertical direction from the upper end side of the backrest (21), and it is possible to prevent the seat surface of the seat portion (11) from increasing rearward.

  According to the seat device (10) described in [3], since the fabric member (30) is made of a stretchable fabric, the cushioning property of the fabric member (30) itself is improved and the seating person's (30) is further improved. It can be deformed to match the posture to enhance the hold feeling.

  According to the seat device (10) described in [4], at least one of the backrest (21) and the seat portion (11) is a cushion made of an elastic material along the front side of the fabric member (30). (41 to 44) are arranged. Thereby, an elastic fabric can be utilized as a cushion (41-44) receptacle. Here, when the fabric member (30) is a stretchable fabric, the original cushion (41 to 44) can be thinly formed as much as the stretchable fabric itself has a cushioning property.

  According to the seat device (10) described in [5], the cushions (41 to 44) are covered with the skin members (51, 52) made of the same material as that of the fabric member (30). Thereby, the cushioning property can be further improved. In particular, if the expansion / contraction direction of the fabric member (30) and the expansion / contraction direction of the skin member (51, 52) are orthogonal to each other at different angles, the cushioning property in both the longitudinal and lateral directions of the seat can be further improved. it can.

  According to the seat device according to the present invention, a series of fabric members stretched between the upper side of the backrest frame and the front side of the seat frame extends into a shape that holds the seated person according to the reclining, It can relieve and eliminate hip point displacement and back displacement when reclining, not only improve seating comfort, but also can be easily manufactured with a simple configuration, reducing weight and cost. It can be realized and has excellent maintainability.

It is a side view which shows typically the seat apparatus which concerns on embodiment of this invention. It is a side view which shows typically the state which reclined the seat apparatus concerning an embodiment of the invention. It is a perspective view which shows the external appearance of the whole seat apparatus which concerns on embodiment of this invention. It is a longitudinal cross-sectional view at the time of upright of the seat apparatus which concerns on embodiment of this invention. It is a cross-sectional view of the backrest during the upright of the seat device according to the embodiment of the present invention. It is a cross-sectional view of the both sides direction of the seat part at the time of upright of the seat apparatus which concerns on embodiment of this invention. It is a longitudinal section at the time of full reclining of the seat device concerning an embodiment of the invention. It is a cross-sectional view of the backrest during the full reclining of the seat device according to the embodiment of the present invention. It is a cross-sectional view of the both sides of a seat part at the time of full reclining of the seat device concerning an embodiment of the invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments representing the present invention will be described below with reference to the drawings.
1 to 9 show an embodiment of the present invention.
FIG. 1 is a side view schematically showing a seat device 10 according to an embodiment of the present invention. FIG. 2 is a side view schematically showing a state in which the seat device 10 is reclined. FIG. 3 is a perspective view showing the overall appearance of the seat apparatus 10.

  As shown in FIG. 3, the seat device 10 is installed in a railway vehicle and is supported on a floor via a pedestal 1. The seat device 10 is integrally connected so that the seat portion 11 and the backrest 21 for two people are arranged side by side. The backrest 21 is supported on the rear end side of the seat portion 11 so as to be able to tilt backward, and can be supported by being adjusted to an arbitrary tilt angle by a reclining mechanism (not shown). Here, since the configuration of the reclining mechanism is general, detailed description thereof is omitted.

  A legrest 12 is provided on the front end side of each seat portion 11 so as to be able to rise and fall. Between each seat part 11, the center armrest 13 is supported so that raising and lowering is possible. In addition, side armrests 14 are fixed to both side ends of the seat portions 11 arranged in a pair. Each side armrest 14 is provided with an operation lever (not shown). This operation lever performs operations such as tilting the backrest 21 backward by the reclining mechanism and tilting the legrest 12.

  A headrest 22 is provided on the upper end side of each backrest 21. Here, both side portions of each headrest 22 are formed in a shape that protrudes forward. In addition, a horizontally-long rectangular macula 23 is provided on the front surface of each headrest 22. Here, the macula 23 may be detachable with a hook-and-loop fastener, for example. Below, the one seat part 11 and the backrest 21 are demonstrated as a representative.

  As shown in FIGS. 1 and 2, the seat portion 11 incorporates a metal seat frame 110 serving as a skeleton. Although only the cross section of the front end portion 111 is shown in FIG. 1, the seat frame 110 is configured as a rectangular frame. Similarly, the backrest 21 has a built-in metal backrest frame 210 serving as a skeleton. Although only a part of the backrest frame 210 is shown in the drawing, the backrest frame 210 is configured as a rectangular frame.

  An arm (not shown) is integrally connected to lower end portions on both sides of the backrest frame 210 so as to extend forward, and the arm is supported by a rotating shaft of a reclining mechanism. The rotary shaft is pivotally supported with respect to a support structure such as the side armrest 14 on both sides of the seat device 10. The rotation center A of the backrest 21 extending coaxially with the rotation axis is at a position indicated by “+” in FIG.

  As shown in FIG. 2, the inclination angle of the backrest 21 is reclined to the maximum extent as shown in FIG. 3 from the initial setting position (upright position) as the reference position of the backrest 21. It is limited to the range up to the maximum backward tilt position (position at full reclining). Further, an upper bar member 211 for fastening a dough member 30 described below is installed between both side portions on the upper side of the backrest frame 210.

  A series of fabric members 30 are stretched between the backrest frame 210 and the seat frame 110. Along the front side of the fabric member 30, cushions 41 to 44 described later that constitute the backrest 21 and the seat portion 11 are arranged. The cloth member 30 is formed into a band shape from a single stretchable cloth. One end 31 of the fabric member 30 is fixed to the upper bar member 211 of the backrest frame 210, and the other end 32 of the fabric member 30 is fixed to the front end 111 of the seat frame 110. That is, the fabric member 30 is stretched in a continuous hammock shape from the upper side of the backrest frame 210 to the front side of the seat frame 110.

  More specifically, the dough member 30 has one end 31 fixed to the upper bar member 211 above the backrest frame 210 and extends downward along the seating surface of the backrest 21, and then the rear end of the seat 11. And the other end 32 extending forward is fixed to the front end 111 on the front side of the seat frame 110. In this state, the fabric member 30 extends from the backrest 21 to the seat portion 11 in a shape that holds the seated person so as to match the change in the posture of the seated person according to the inclination angle of the backrest 21.

  Further, a lower bar member 212 is installed between both side portions of the lower end of the backrest frame 210. The lower bar member 212 extends in parallel with the rotation center A of the backrest 21 in the same manner as the upper bar member 211. Here, the lower bar member 212 is located behind the rotational center A of the backrest 21. The lower bar member 212 has a structure for retaining the shape so that the fabric member 30 is pushed forward during reclining.

  That is, as shown in FIGS. 1 and 2, the middle of the fabric member 30 extending downward along the seating surface of the backrest 21 passes through the front side of the lower bar member 212 and then the rear end of the seat portion 11. Wrap around. Thereby, in the process of reclining the backrest 21, the fabric member 30 in the vicinity between the backrest 21 and the seat portion 11 comes into contact with the lower bar member 212 and is pushed toward the seat portion 11 side. Is set.

  By the way, the stretchable fabric constituting the fabric member 30 is a fabric that expands and contracts, and there are one that expands and contracts in only one of the vertical and horizontal directions and one that expands and contracts in both the vertical and horizontal directions. . Specifically, for example, an elastic base fabric and a cover base fabric that are integrated by overlapping are known. Here, there is a type in which the knitted structure of the elastic base fabric is constituted by polyester or polyurethane elastic yarns, and the knitted structure of the cover base fabric is constituted by the same or multi-fiber yarns. The thickness of the stretchable fabric is about several mm.

  As for the specific stretchability of the stretchable fabric, for example, the tensile strength is 10 cm / min, the tensile rate is 10 cm / min, and the tensile strength is 2.5 kg measured in the longitudinal direction. Stretchability falling within the range of 60 to 80% and 100 to 120% in the lateral direction is suitable. According to the stretchability, the stretchable fabric is stretched without repulsion with respect to the seated person's load on the seat 11 and the backrest 21, and the cushioning property that can wrap around the body part serving as a fulcrum of the load. Can be realized.

  As shown in FIGS. 4 to 9, in the present embodiment, a cushion made of an elastic material is disposed along the front side of the fabric member 30 in each of the seat portion 11 and the backrest 21. 4 is a vertical cross-sectional view of the seat device 10 during upright, FIG. 5 is a cross-sectional view of the backrest 21 during upright, and FIG. 6 illustrates both side directions of the seat portion 11 during upright. FIG. Moreover, FIGS. 7-9 is the same sectional drawing at the time of full reclining.

  Specifically, in the seat portion 11, a cushion 41 that constitutes a main portion of the seat surface is disposed on the fabric member 30 positioned inside the both side portions 112, 112 of the seat portion frame 110. In addition, a pair of cushions 42, 42 forming both sides of the seating surface are disposed on the side portions 112 positioned on both sides of the cushion 41. Specifically, for example, a foamed urethane foam is suitable as a material for the cushions 41 and 42.

  The outer surfaces of the cushions 41 and 42 constituting the seat portion 11 are molded into a shape that provides a comfortable sitting comfort for the seated person based on ergonomics. Moreover, although the specific material, hardness, etc. of the cushion are selected so as to bring about a comfortable sitting comfort, the cushioning property by the cushions 41, 42 is only auxiliary due to the presence of the fabric member 30, It becomes possible to form the film as thin as necessary.

  The outer surfaces of the cushions 41 and 42 are covered with a skin member 51. The skin member 51 is preferably made of the same material as the cloth member 30, that is, a stretchable cloth. Here, when the stretchable fabric is used, for example, if the fabric member 30 is set to stretch and contract in the vertical direction, both sides of the seat portion 11 (lateral direction) so that the stretch direction is orthogonal to the fabric member 30. If it is set so as to expand and contract, it is possible to obtain a more comfortable cushioning property and hold feeling.

  Further, in the backrest 21, a cushion 43 that constitutes a main part of the backrest surface is disposed on the fabric member 30 located inside the both side portions 213 and 213 of the backrest frame 210. A pair of cushions 44, 44 that form both sides of the back support surface are disposed on the sides of the side portion 213 located on both sides of the cushion 43. As the material of the cushions 43 and 44, similarly to the seat portion 11, specifically, for example, urethane foam is suitable.

  The outer surfaces of the cushions 43 and 44 constituting the backrest 21 are formed in a shape that provides a comfortable sitting comfort for the seated person based on ergonomics. Further, like the seat portion 11, the specific material and hardness of the cushion are selected so as to provide a comfortable seating comfort, but the cushioning property by the cushions 43 and 44 is only due to the presence of the fabric member 30. It is auxiliary and can be molded as thin as necessary.

  Similarly to the seat portion 11, the outer surfaces of the cushions 43 and 44 are covered with the skin member 52. The skin member 52 is preferably made of the same material as the fabric member 30, that is, a stretchable fabric. In the case of such a stretchable fabric, for example, if the fabric member 30 is set to stretch and contract in the vertical direction, the backrest 21 is arranged in both directions (lateral direction) so that the stretch direction is orthogonal to the fabric member 30. If it sets so that it may expand and contract, more comfortable cushioning properties and a hold feeling can be obtained.

Next, the operation of the seat device 10 according to the present embodiment will be described.
In order to recline the backrest 21 of the seat device 10, the seated person first operates the operation lever to release the lock. Then, the backrest 21 tries to tilt to the initial setting position by the forward biasing force. In this state, the seated person presses the back against the backrest 21 and tilts the backrest 21 to a desired tilt angle. , It can be supported at an arbitrary inclination angle.

  As shown in FIGS. 1 and 2, the posture of the seated person changes according to the inclination angle of the backrest 21, but the series of fabric members 30 stretched from the backrest 21 to the seat portion 11 are seated. Extends to a shape that best fits the seated person's holding ability according to changes in the posture of the person. That is, the dough member 30 stretched in a hammock shape is combined with the cushions 41 to 44 arranged along the front side thereof, and deforms according to each body part of the seated person, By supporting it, the concentration of its own weight on a certain part is prevented.

  Thus, according to the reclining operation of the backrest 21 by the seated person, the shape of the fabric member 30 is changed, and the seated person can be always held in the optimum posture. Accordingly, it is possible to relieve / eliminate the hip point displacement and back misalignment of the seated person and also improve the hold feeling. In addition, since there is no gap between the backrest 21 and the seat portion 11, a structure in which objects are difficult to fall off is obtained. And it can manufacture easily by the simple structure which uses the fabric member 30, can implement | achieve stable operation | movement, weight reduction, and cost reduction, and is excellent also in maintainability.

  Further, as shown in FIGS. 1 and 2, a lower bar member 212 is constructed between both sides of the lower end of the backrest frame 210, and after passing through the cloth member 30 on the front side of the lower bar member 212, The dough member 30 is wrapped around the rear end of the seat portion 11. Thereby, in the process of reclining the backrest 21, the fabric member 30 in the vicinity between the backrest 21 and the seat portion 11 comes into contact with the lower bar member 212 and is pushed toward the seat portion 11 side.

  Here, the relative positional relationship between the rotation center A of the backrest 21 and the lower bar member 212 is such that the lower bar member 212 is substantially the same rearward with respect to the rotation center A in the upright shown in FIG. Position. At this time, the fabric member 30 does not contact the lower bar member 212, and the lower bar member 212 does not unnecessarily affect the seating feeling. On the other hand, during the full reclining shown in FIG. 2, the lower bar member 212 changes so as to be positioned behind and below the rotation center A.

  By the lower bar member 212 in this position, the middle of the dough member 30 is pushed to the seat 11 side, which is the front. Therefore, the cloth member 30 does not hang down in the vertical direction from the one end side 31 thereof, and the situation in which the depth of the seating surface of the seat portion 11 retreats can be prevented. Thereby, even at the time of full reclining, it is possible to reliably prevent a situation in which the hip point of the seated person is greatly shifted backward.

  In the present embodiment, since the fabric member 30 is made of a stretchable fabric, the cushioning property of the fabric member 30 itself is improved, and the fabric member 30 is further deformed so as to more closely match the seated person's posture. Can be increased. Further, as shown in FIGS. 4 to 9, cushions 41 to 44 made of an elastic material are disposed on both the backrest 21 and the seat portion 11 along the front surface side of the fabric member 30, so that the stretchable fabric is cushioned. Can be used as a receiver.

  In particular, as in the present embodiment, when the fabric member 30 is a stretchable fabric, the original cushions 41 to 44 can be formed thin as much as the stretchable fabric itself has a cushioning property. Thereby, the arrangement | positioning space of a cushion can be reduced significantly, for example, foot space can be expanded.

  Furthermore, by forming the skin members 51 and 52 covering the outer surfaces of the cushions 41 to 44 with a stretchable fabric as in the case of the fabric member 30, the cushioning property can be further enhanced. In such a case, if the fabric member 30 is set so as to expand and contract in the vertical direction, and the expansion and contraction directions of the skin members 51 and 52 are set to be orthogonal to each other, more comfortable cushioning and holding feeling can be obtained. Can be obtained.

  Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to the above-described embodiments, and there are changes and additions within the scope not departing from the gist of the present invention. Are also included in the present invention. For example, although the present embodiment is configured for two-seater, it may be for one-seater or three-seater. Further, the present invention is not limited to a seat for a railway vehicle, and may be applied to an aircraft or a general household chair or sofa.

  Moreover, although the example which comprised the fabric member 30 by the stretchable fabric was demonstrated in the said embodiment, the fabric member 30 is not restricted to a stretchable fabric, It can also comprise by normal fabric. However, in this case, it is necessary to increase the elasticity of the material of the cushion itself made of an elastic material disposed on the front surface side of the fabric member 30 or to increase the thickness.

  Furthermore, in the above-described embodiment, the cushions 41 to 44 made of an elastic material are disposed along the front surface side of the fabric member 30 in each of the seat portion 11 and the backrest 21, but the cushions 41 to 44 are used as necessary. It may be arranged only on either the seat 11 or the backrest 21 or may be configured without the cushions 41-44.

  The present invention provides a seat device for a passenger such as a railway vehicle among seat devices including a reclining mechanism that supports a backrest to be tiltable on the rear end side of a seat portion and adjusts an inclination angle of the backrest. Can be applied.

DESCRIPTION OF SYMBOLS 1 ... Base 10 ... Seat apparatus 11 ... Seat part 12 ... Legrest 13 ... Center armrest 14 ... Side armrest 21 ... Backrest 22 ... Headrest 23 ... Macula 30 ... Fabric member 31 ... One end side 32 ... Other end side 41 ... Cushion 42 ... Cushion 43 ... Cushion 44 ... Cushion 51 ... Skin member 52 ... Skin member 110 ... Seat part frame 111 ... Front end part 112 ... Side part 210 ... Backrest frame 211 ... Upper bar member 212 ... Lower bar member 213 ... Side part

Claims (5)

In the seat device provided with a reclining mechanism that supports the backrest to be able to tilt backward on the rear end side of the seat portion and can adjust the inclination angle of the backrest,
A back frame constituting the backrest, a seat frame constituting the seat, and a series of fabric members stretched between the frames;
The dough member is fastened at one end to the upper side of the backrest frame, extends downward along the seating surface of the backrest, and then wraps around the rear end of the seating portion so that the lower side of the seating portion becomes the seating surface. And the other end side extending forward is fixed to the front side of the seat frame, and the seating member can adjust the backrest according to the inclination angle of the backrest from the backrest to the seat portion. A seat device that extends in a shape that matches a posture and holds a seated person. A bar member extending in parallel with the center of rotation at which the backrest tilts is installed at the lower end of the backrest frame,
The midway of the cloth member extending downward along the seating surface of the backrest is passed through the front side of the bar member and then wrapped around the rear end of the seat portion. Seating equipment.   The seat device according to claim 1, wherein the fabric member is made of a stretchable fabric.   The seat device according to claim 1, 2 or 3, wherein a cushion made of an elastic material is disposed along at least one of the backrest and the seat along the front side of the fabric member.   The seat device according to claim 4, wherein the cushion is covered with a skin member made of the same material as the fabric member.

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