JP6643046B2 - Chair pressure support device - Google Patents

Description

  The present invention relates to a body pressure support device such as a headrest, a shoulder rest, and a backrest in a chair.

  It is common practice to provide a headrest as an optional item for a chair. In this case, since the headrest is arranged on the backrest, it is almost always the case that the surface has a uniform design.

  In other words, as for the backrest, a cushion type in which a cushion material is stretched on the front of the backboard (back inner shell) and this is covered with a skin material such as woven fabric, and a mesh type in which a mesh material is stretched in the back frame of the front and rear openings are widespread. However, when the backrest is of a cushion type, the headrest is also of a cushion type structure, and when the backrest is of a mesh type, the headrest is also of a mesh type, so that design uniformity is provided.

  On the other hand, as described above, most of the mesh-type backrests in the swivel chair have a structure in which a single mesh-like material is stretched over a back frame, but Patent Document 1 discloses a seat structure for a vehicle. It is disclosed that a skin material is attached to a surface side of a three-dimensional net, a bag is formed by the skin material and the three-dimensional net, and a cushion is fitted into the bag.

Japanese Patent No. 4086616

  Now, in order to make the headrest a cushion type, for example, it is necessary to have a structure having an inner shell on which the cushions are arranged and an outer shell which covers the inner shell from the back, so that there is a problem that the cost increases. That is, since the mesh type headrest and the cushion type headrest use completely different members, there is a problem that the cost is increased as a whole.

  On the other hand, in Patent Document 1, the cushion material overlaps with the three-dimensional net as a strength member, so that the appearance can be the same as that of the cushion type. However, the skin material has a bag structure, and the three-dimensional net is partially I have to expose it. For this reason, it can be said that it is difficult to apply to a normal chair. In addition, since the headrest and the backrest can be seen from behind, it is necessary to consider the appearance of the back, but in the vehicle seat targeted in Patent Literature 1, the back of the three-dimensional net is not exposed, so that the appearance is not improved. Does not consider it at all, and in this respect it is difficult to apply to chair headrests and backrests. Further, there may be a case where the cushion type is not necessarily required and only the appearance is a cushion type, but in this case, the configuration is excessive in Patent Document 1.

  The present invention has been made to improve such a situation.

  The present invention relates to a body pressure supporting device for a chair, and a body pressure supporting device according to claim 1, wherein a peripheral frame body opened on the front and back, and a flexible laminated body pressure stretched on the peripheral frame body. A support member, and the body pressure support member includes a mesh-like base material as a strength member, a front skin material disposed on a front side of the mesh-like base material, and a back surface of the mesh-like base material. And a rear skin material that covers the whole from the side. Needless to say, the skin material mainly has a role as a cosmetic material. Therefore, those which cannot be seen through are preferable.

  According to a second aspect, in the first aspect, a cushion layer is provided between the mesh-like base material and a front skin material, and the cushion layer is entirely covered with the front skin material. In this case, the thickness of the cushion layer is, for example, about several mm. It is also possible to arrange a skin material on the front surface and the back surface of the mesh-like base material without providing the cushion layer. In this case, as the front skin material, for example, a pile cloth, a blanket cloth, a thick towel cloth, or a thick cloth By using a knitted fabric, it is possible to give the front skin material a cushioning property (softness per hit). When a cushion layer is provided, a foam resin such as urethane is typical as the material, but a three-dimensional knitted fabric or the like can also be used.

  According to a third aspect of the present invention, in the second aspect, an auxiliary frame having a shape substantially similar to the peripheral frame is attached to the peripheral frame from the front side, while the peripheral edge of the laminated body pressure supporting member is attached to the peripheral frame. A tape-shaped edge member joined to the mesh-like base material, the cushion layer, and both skin materials is attached, and the laminated body pressure supporting material overlaps the auxiliary frame from the front side, The edge member is attached to the back surface of the auxiliary frame.

  According to a fourth aspect of the present invention, in the third aspect, it is possible to attach only the mesh base material to the auxiliary frame in place of the laminated body pressure supporting member, and the laminated body pressure supporting member is The stretched auxiliary frame and the auxiliary frame having only the mesh base material can be replaced with the peripheral frame.

  In the present invention, since the entire front surface side of the mesh-shaped base material and the entire back surface of the body pressure support device are formed of the skin material, it is possible to exhibit the same appearance as the cushion type while using the peripheral frame. it can. Further, since the peripheral frame body can be provided with only the mesh base material, the members can be shared between the mesh type and the cushion type (or the cushion type type), thereby contributing to cost reduction as a whole. In order to hold the front and back skin members in a stretched state, it is preferable to bond adjacent members so that the laminated body pressure support members are integrated as a whole.

  When the cushion layer is provided as in claim 2, the contact with a person is softened, and the commercial value can be improved. That is, for example, a feeling equivalent to that obtained by putting a cushion material on the inner shell can be obtained, and a high satisfaction can be given to the user.

  When the auxiliary frame is provided as in claim 3, when assembling the body pressure supporting device, it is only necessary to attach the auxiliary frame on which the laminated body pressure supporting member is stretched to the peripheral frame. Can be reduced. Further, it becomes easy to hold the skin material in a taut state.

  By adopting the configuration of claim 4, the auxiliary frame and the peripheral frame can be shared between the mesh type and the cushion type, which can further contribute to cost reduction.

It is the perspective view which looked at the chair from the front in the state in which the optional article was not attached, (A) displayed the flexible sheet, (B) omitted the flexible sheet. FIG. 4A shows a state in which a headrest and a hanger as optional items are attached, wherein FIG. 4A is a perspective view as viewed from the front, and FIG. 4B is a perspective view as viewed from behind. It is the perspective view which looked at the chair which does not attach an optional product from the back, (A) what displayed the flexible sheet, (B) what omitted the flexible sheet, (C) is partial. FIG. It is a figure which shows the state used as the cushion type specification, (A) is the perspective view which shows most of an external appearance, (B) is the perspective view in the state which omitted the cushion, (C) is an isolated perspective view. (A) and (B) are separate perspective views showing a headrest mounting structure. It is a separation perspective view of a headrest. It is the separation perspective view which displayed the peripheral frame of the headrest and the auxiliary | assistant frame in the attitude | position changed. It is a vertical side view of the center part in a mesh type specification. It is a vertical side view of the center part in a cushion type specification.

  Next, an embodiment of the present invention will be described with reference to the drawings. In this application, the terms left, right, front and back are used to specify the direction, but this is based on a person who normally sits on a chair. The front view is the direction facing the seated person. The direction is clearly shown in FIG. 1 just in case.

  This embodiment is applied to a swivel chair frequently used in offices. Further, the chair of the present embodiment is of a type in which the front portion of the backrest moves forward when a person sits down. In the present embodiment, the present invention is applied to a backrest. 1 to 10 show a state where the backrest is a mesh type, and FIG. 11 shows a state where the backrest is a cushion type.

(1). Outline of Chair First, an outline of the chair will be described with reference to FIGS. As shown in FIG. 1, the chair includes a leg device 1, a seat 2, and a backrest 3 as main elements. The leg 1 has a leg support 4 composed of a gas cylinder and branch portions 5 extending in a radial direction, and a caster is provided at the tip of each branch portion 5. A substantially box-shaped base (not shown) opened upward is fixed to the upper end of the leg support 4.

  Although not shown, a resin or aluminum die-cast front block is fixed to the front end of the base with bolts, and a pair of left and right front links are rotatably attached to the front block. . The front link is slightly inclined backward with respect to the vertical line in a side view in a neutral state where no person is seated, and leans backward when a person is seated.

  A tilting body (not shown) is connected to the base so as to be tiltable rearward by a left-right longitudinal support shaft, and a rear block 14 is fixed to a rear portion of the tilting body 1. A back support 16 is fixed to the rear part of the rear block 14, and the upper end of the backrest 3 is attached to the upper end of the back support 16. The back support 16 has two left and right vertical frames 17, and the upper ends of the left and right vertical frames 26 are integrally connected via a connecting portion 18.

  As shown in FIG. 2, the lower end of the backrest 4 is connected to the upper end of a second interlocking link 19 that can be tilted back and forth. A pair of right and left rear links (not shown) are connected to the rear block 14 in a state parallel to the front link. The seat 2 is connected to the front link and the rear link via a seat outer shell. When a person sits on the seat, the seat front link and the rear link are tilted rearward to lower the seat, and the second link is linked via a first link (not shown) linked with the rotation of the rear link. 19 tilts forward.

  Therefore, when a person is seated, the backrest 3 bends about its upper end so that the lower end moves forward. Thereby, even if a person sits shallowly, the waist of the person is supported by the backrest 3. When a person sits deeply, the above-mentioned first interlocking link is deformed, so that the backrest 3 is allowed to move down without moving.

  As shown in FIG. 2, a headrest 21 and a hanger 22 can be attached to the chair of the present embodiment as examples of optional items. The headrest 21 and the hanger 22 are fixed to the back support 16. In FIGS. 1 and 3, the backrest 3 is of a mesh type, but in FIG. 4, it is of a cushion type. The headrest 21 can be changed to a mesh type or a cushion type according to the specification of the backrest 3. Details will be described later.

(2). Outline of the Back As shown in FIGS. 1 and 4, for example, the backrest 3 includes a back frame 41 opened front and rear, upper and lower sheet holding frames 46 and 47 overlapping the front surface of the back frame 41, and a seated person. And a mesh-shaped flexible sheet 48 receiving the body pressure.

  Although not shown, a band-shaped edge member made of a resin tape or the like is fixed around the flexible sheet 48 by sewing or the like, and the edge member is attached to the back surfaces of the sheet holding frames 46 and 47 ( Locking). The sheet holding frames 46 and 47 are divided into an upper sheet holding frame 46 and a lower sheet holding frame 47, but one flexible sheet 48 is provided. The vertical height ratio between the upper sheet holding frame 46 and the lower sheet holding frame 47 can be set arbitrarily.

  As shown in FIG. 3, the back frame 41 includes left and right side frames 50 that are long in the vertical direction, an upper frame 51 connected to the upper ends of the left and right side frames 50, and a lower frame 42 connected between the lower ends of the left and right side frames 50. And is generally square when viewed from the front. On the other hand, the entire upper frame 51 is located behind the side frame 50, and has a form folded back downward in a side view.

  On the other hand, as shown in FIG. 1, the upper seat holding frame 46 has a side member 52 overlapping the side frame 50 of the back frame 41 from the near side, and an upper shell 53 integrally connected to the upper ends of the left and right side frames 50. ing.

  For example, as shown in FIG. 3 (C), a branch portion 56 projecting left and right outside is integrally formed at an upper end portion of the back support 16, while a branch portion 56 on the left and right sides of the dome portion 55 in the upper frame 51 is formed. Form a downward groove 57 into which the branch portion 56 fits. As described above, the fitting of the upper frame 51 and the branch portion 56 enhances the supporting strength and enhances the function of preventing torsion.

  As shown in FIG. 5, the headrest 21 has a left and right horizontally long peripheral frame body 23 that is opened front and rear, and left and right foot parts 24 that branch downward from a left and right intermediate portion of the peripheral frame body 23. At the lower end of the portion 24, a base (attachment portion) 25 that overlaps the branch portion 56 of the back support 16 from below is supported. The base 25 is fixed to the lower surface of the branch 56 of the back support 16 with screws.

  As shown in FIG. 2, the hanger 22 has a substantially Y-shaped central portion 26, a bar portion 27 laterally taken out from the upper end of the central portion 26, and a base portion 28 facing forward from the lower end of the central portion 26. The base 28 is fixed to the lower surface of the connecting portion 18 of the back support 16 with screws.

  As described above, the backrest 3 of the present invention can be of the cushion type shown in FIG. In this cushion type, a back plate 29 as an example of a body pressure receiving body is used. The back plate 29 has a shallow tray-like shape, and a cushion 30 is fitted therein, and the cushion 30 is covered with a skin material. The edge of the back plate 29 is connected to the peripheral frame body 41. Even with the cushion type, the headrest 21 and the hanger 22 can be attached.

(3). Headrest The headrest 21 has the peripheral frame body 23 opened front and rear as described above, and further, as a main member, an auxiliary frame body (front member) that overlaps the peripheral frame body 23 from the near side. The laminated body pressure support member 32 shown in FIG. 8 and the single-layer mesh member 33 shown in FIG. 9 can be selectively attached to the auxiliary frame 31. The peripheral frame body 23 and the auxiliary frame body 31 are gently curved in a forwardly concave shape in plan view.

  As can be understood from FIGS. 6, 7, and 9, the peripheral frame body 23 has a gutter-like shape that opens forward. On the other hand, the auxiliary frame body 31 is basically plate-shaped, but has reinforcing portions 34 surrounded by ribs at the upper and lower portions. On the other hand, as shown in FIGS. 8 and 9, tape-shaped edge members 35 are integrally attached to the edges of the laminated body pressure support member 32 and the single-layer mesh member 33 by sewing or the like, while shown in FIG. As described above, a large number of hooks 36 for attaching the edge member 35 are formed on the back surface of the auxiliary frame body 31 at intervals. Although not shown, the edge member 35 has a large number of holes that fit into the hooks 36.

  As shown in FIG. 7, hook-shaped first engagement claws 37 a projecting rearward symmetrically from the upper and lower sides of the auxiliary frame body 31 in a plan view. On the other hand, a second engagement claw 37b is formed in the gutter-shaped groove of the peripheral frame body 23 so that the first engagement claw 37a is forcibly engaged. Further, hook-shaped third engaging claws 38a projecting rearward are formed on the left and right sides of the auxiliary frame body 31 on the left and right sides, while the gutter-like grooves are straddled on the left and right side parts of the peripheral frame body 23. The third engagement portion 38b in such a state is formed.

  Therefore, when the auxiliary frame body 31 is pressed against the peripheral frame body 23, the first engagement claw 37a and the second engagement claw 37b mesh with each other, and the third engagement claw 38a meshes with the third engagement portion 38b. As a result, the auxiliary frame 31 is held in such a manner that it cannot be displaced up, down, left and right, and cannot be detached forward. Further, as shown in FIGS. 8 and 9, a rearward-facing center projection 39 is provided at the lower left and right intermediate portion of the auxiliary frame body 31, and the center projection 39 is fastened to the lower part of the peripheral frame body 23 with a screw 40.

  The single-layer mesh material 33 is the same as the flexible sheet 48 used for the backrest 3, and is a knitted or woven fabric having a highly elastic yarn (usually, there are many knitted fabrics). When used as the flexible sheet 48 for the backrest 3, the ferroelastic yarn is arranged in a horizontally long posture.

  On the other hand, as shown in FIG. 9, the laminated body pressure supporting member 32 includes a mesh-shaped base material 32a as a strength member, a thin cushion layer 32b disposed on the surface of the mesh-shaped base material 32a, and a cushion layer 32b. And a rear skin material 32d that entirely covers the mesh-like base material 32a from the back side. Accordingly, the laminated body pressure support member 32 has a four-layer structure.

  These four layers 32a to 32d are fixed to the edge member 35 by sewing or the like with their edges overlapping each other. Since these four layers 32a to 32d are compressed and deformed as a whole, they can be sandwiched between the peripheral frame 23 and the auxiliary frame 31. However, at least one of the plurality of layers such that the mesh-shaped base material 32a and the three skin materials 32c and 32d are overlapped and fixed to the edge member 35, and the cushion layer 32b is positioned inside the edge member 35. It is possible to fix one layer to the edge member 35. Further, the single-layer mesh member 33 and the laminated body pressure support member 32 may be fixed to either the front surface or the back surface of the edge member 35.

  The mesh base material 32a is the same as the single-layer mesh material 33 and the flexible sheet 48. As the cushion layer 32b, for example, a siretan sheet having a thickness of about 2 to 3 mm can be used. Of course, other materials may be used. The front and back skin materials 32c and 32d are the same as the skin material 30 of the cushion-type backrest 3 shown in FIG. When the adjacent layers are bonded with an adhesive such as a hot-melt adhesive or the like, the laminated body pressure supporting member 32 has excellent aesthetic appearance without slack or floating even in a three-dimensional shape. can do.

  As can be understood from the above description, when the backrest 3 is a cushion type as shown in FIG. 4, the headrest 21 also exhibits the cushion type appearance by using the laminated body pressure support member 32 for the headrest 21. Can be. When the backrest 3 is a mesh type as shown in FIGS. 1 and 3, the headrest 21 can also be a mesh type using a single-layer mesh material 33. Therefore, the backrest 3 and the headrest 21 can be unified in design, and the aesthetic appearance of the entire chair can be secured.

  In the cushion type and the mesh type, only the laminated body pressure support member 32 and the single layer mesh member 33 are selected, and the peripheral frame member 23 and the auxiliary frame member 31, which are components of the headrest 21, are common. As a result, the cost of the entire product group can be reduced. Also, the presence of the rear skin material 32d does not impair the appearance of the back view.

  Although the above description is applied to a headrest, the present invention can be applied to other body pressure supporting devices such as a backrest and a shoulder rest. Further, the present invention is not limited to the swivel chair, and can be widely applied to various chairs (including benches) such as a so-called pipe chair.

  It is also possible to arrange a plurality of cushion layers on the surface side of the mesh-shaped base material, or to provide a cushion layer on the back side of the mesh-shaped base material. Conversely, it is also possible to eliminate the cushion layer and directly overlay the skin material on the front and back surfaces of the mesh base material. In the case where it is sufficient to simply provide the appearance having a surface made of a skin material such as cloth or leather as in a cushion type, the cushion layer can be eliminated. Further, regardless of the presence or absence of the cushion layer, the thickness of the front skin material can be changed from that of the rear skin material.

  The auxiliary frame is not an essential element. Therefore, it is also possible to attach the edge member such as a tape directly to the peripheral frame.

  The present invention can be embodied in a chair. Therefore, it can be used industrially.

Reference Signs List 3 backrest 16 back support 17 vertical frame 18 connecting part 21 headrest as an example of body pressure support device 23 peripheral frame body 31 auxiliary frame body 32 laminated body pressure support material 32a mesh-like base material 32b cushion layer 32c front skin material 32d rear Skin material 33 Single layer mesh material

Claims (4)

It has a peripheral frame body opened on the front and back, and a flexible laminated body pressure support material stretched on the peripheral frame body,
The body pressure support member includes a mesh-like base material as a strength member, a front skin material disposed on the front surface side of the mesh-like base material, and a rear skin material that entirely covers the mesh-like base material from the back side. Having,
Chair pressure support device. A cushion layer is provided between the mesh-like base material and the front skin material, and the cushion layer is entirely covered with the front skin material,
The chair body pressure support device according to claim 1. On the peripheral frame, an auxiliary frame substantially similar to the peripheral frame is mounted from the front side,
A tape-shaped edge member joined to the mesh-like base material, the cushion layer, and both skin materials is attached to a periphery of the laminated body pressure support material, and the laminated body pressure support material is the auxiliary material. Overlapping the frame from the front side, the edge member is attached to the back surface of the auxiliary frame,
The apparatus for supporting body pressure of a chair according to claim 2. It is possible to attach only the mesh base material to the auxiliary frame in place of the laminated body pressure support material, and only the auxiliary frame and the mesh base material on which the laminated body pressure support material is stretched. It is possible to replace the peripheral frame body with an auxiliary frame body stretched,
The device for supporting body pressure of a chair according to claim 3.

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