JP2014111219A - Chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hanger attachment structure having high versatility and strength in a chair including a hanger fixed to a back frame constituting a backrest.SOLUTION: A back frame 8 includes side members 10, and each side member 10 has a long groove 12 formed on an external side face thereof for attaching a support seat 9. A hanger 6 includes a bar part 15 and right and left leg bodies 16, and a lower end of each leg body 16 is fixed to an internal side face of the side member 10 by a screw 17. The side member 10 has a recessed part 18 formed on an internal side face thereof, and the leg body 16 of the hanger 6 is firmly fitted in the recessed part 18. Regardless of the attachment structure of the support seat 9, the internal side face of the side member 10 is substantially exposed so as to be applied to a broad range of objects and have high versatility. The hanger can be fixed by fitting it in the recessed part 18 so as to secure high fastening strength.

Description

  The present invention relates to a chair having a hanger attached to a backrest.

  In a chair, a hanger that hangs clothes or towels on the backrest is attached. The form of the hanger varies, and the structure for attaching the hanger to the backrest also varies. For example, Patent Documents 1 and 2 disclose that a hanger is fixed to a horizontally long upper member that constitutes the upper end of the back frame as a structure for attaching the hanger to a backrest having a substantially square back frame when viewed from the front.

  In both Patent Documents 1 and 2, the body pressure of the seated person is received by a flexible sheet material such as a mesh material. In Patent Document 1, the back frame is arranged in front of the back frame to which the backrest is attached. In addition, a sheet material is stretched on the back frame. And the lower end part of the leg in a hanger is piled up on the front surface of the upper member in a back frame, and the attachment member piled up from the back on the upper member is fastened to the leg. That is, the upper member is sandwiched from the front and rear by the lower end portion of the foot and the attachment member.

  On the other hand, in Patent Document 2, the sheet material is directly attached to the back frame. That is, a long groove is formed on the outer peripheral surface of the back frame, while a tape-like edge member is fixed to the outer peripheral edge of the sheet material, and the edge member is fitted into the long groove to attach the sheet material to the back frame. And the leg of a hanger is piled up on the upper member of the back frame from the top, and the clamping piece overlapped with the upper member from below is fastened to the foot with a screw. That is, in Patent Document 2, the upper member of the back frame is sandwiched from above and below by the legs of the hanger and the sandwiching pieces.

JP 2004-351118 A JP 2008-104521 A

  In Patent Document 1, since the front surface of the back frame is also exposed, the upper member is sandwiched from the front and back by the hanger and the mounting member. However, when the sheet material is directly attached to the back frame, The structure cannot be adopted. Therefore, there is a problem that the application target is limited and the versatility is low.

  On the other hand, in Patent Document 2, the hanger can be attached even if the seat material is attached to the back frame, but there is a problem that the body (back) of the seated person may hit the foot of the hanger. Also, in order to fix the hanger firmly, the upper member of the back frame must be made as thick as possible, which may lead to deterioration of aesthetics.

  The present invention has been made to improve the current situation.

The present invention relates to a chair having a backrest and a hanger attached thereto. In this chair, in the invention of claim 1, the backrest has a back frame to which a support body that supports the body pressure of the seated person is directly or indirectly attached. The left and right side members and left and right horizontally long upper members connected to the upper ends of the left and right side members are provided, while the hangers are provided on the left and right feet fixed to the side members of the back frame, and the upper ends of the feet. And a horizontally long bar.

  According to a second aspect of the present invention, in the first aspect, the lower end portion of the foot in the hanger is fixed to the inner side surface of the side member in the back frame with screws. According to a third aspect of the present invention, in the second aspect, the support body overlaps the front surface of the side member in the back frame, and at least the foot of the hanger is fixed among the inner side surfaces of the side member in the back frame. The portion to be formed is a recess that is recessed toward the outer surface of the side member, and the lower end of the foot is fitted in this recess.

  In the present invention, since the hanger is fixed to the side member of the back frame, it can be applied to a structure in which a support body such as a sheet overlaps the front surface of the back frame. Therefore, the application object is wide and excellent in versatility. Further, since it is possible to easily realize a gap between the upper member of the back frame and the hanger, it is possible to accurately prevent the human body from hitting the hanger. Therefore, it is easy to use.

  The hanger foot can be fixed to the rear surface of the side member, for example. However, if the hanger foot is fixed to the inner surface of the side member as in claim 2, it is possible to prevent the hanger foot from being conspicuous, so it is excellent in beauty. ing. In particular, when a recess is provided in the side member as in claim 3 and the foot of the hanger is fitted to this, the fixing part of the hanger can be concealed and the aesthetics can be further enhanced, and the foot is firmly secured. Since it is positioned, there is an advantage that high fixing strength can be secured.

It is an external view of the chair which concerns on embodiment, (A) is a perspective view in the state which has not attached the hanger, (B) is a side view in the state which attached the hanger. It is a front view. (A) is the perspective view which looked at the hanger from the front, (B) is the perspective view which looked at the hanger from the back. It is the isolation | separation perspective view which fractured | ruptured and showed the side member. (A) is a partial perspective view of a back frame, (B) is a side view of the hanger, and (C) is a cross-sectional view taken along the line CC of (A) with the hanger attached. It is a figure which shows the state which attached the headrest to the upper member, (A) is a front view, (B) is a top view, (C) is a vertical side view. It is a figure which shows the attachment structure of a headrest, (A) is the fracture | rupture perspective view seen from the upper front, (B) is the fracture | rupture perspective view seen from back lower direction, (C) is the fracture | rupture perspective view seen from the front lower direction. (A) is the fracture | rupture perspective view of an upper member, (B) is the perspective view which looked at the lower part of the headrest from the upper front, (C) is the perspective view which looked at the lower part of the headrest from the lower part.

  Next, an embodiment of the present invention will be described with reference to the drawings. This embodiment is applied to a swivel chair frequently used for office work. In the following description, the words “front and rear” and “left and right” are used to specify the direction. These front and rear and left and right directions are based on the direction of a person who is normally seated.

(1). Outline of chair-Hanger and its mounting structure As shown in Figs. 1 and 2, the chair is fixed to the leg device 1 having the leg strut 2 (gas cylinder) as the main elements and to the upper end of the leg strut 2. A base 3, a seat 4 disposed above the base 3, and a backrest 5. A resin hanger 6 is attached to the backrest 5. The leg 1 is provided with a plurality of branch legs (only a part of which is shown) extending radially, and a caster is provided at the tip of each branch leg. A back support frame 7 is connected to the base 3 so as to be tiltable rearward.

  The backrest 5 has a structure in which a mesh-like flexible support sheet 9 is stretched on the back frame 8. The back frame 8 is a resin molded product, and includes a left and right side member 10 extending in the vertical direction, an upper member 11 connected to the upper ends of the left and right side members 10, and a lower member connected to the lower ends of the left and right side members 10 (not shown). Z)). Therefore, the back frame 8 has a substantially rectangular shape when viewed from the front. And the support | pillar part 7a is provided in the rear end of the back support frame 7, and the side member 10 of the back frame 8 is fastened to this support | pillar part 7a with the screw.

  For example, as shown in FIGS. 5A and 5C, a long groove 12 is formed on the outer periphery of the back frame 8 (the outer surface of each member), while a belt-like edge member 13 is formed on the outer peripheral edge of the support sheet 9. The edge member 13 is fitted in the long groove 12. Therefore, the support sheet 9 overlaps the front end surface of the back frame 8.

  The hanger 6 is composed of a horizontally long bar portion 15 for hanging articles such as clothes and towels, and a pair of left and right legs 16 extending downward from the bar portion 15. The foot 16 extends downward from a portion near the middle of the left and right sides of the bar portion 15 and spreads to the left and right sides. The lower end of the foot 16 is fixed to the inner surface of the side member 10 in the back frame 8 with screws 17. . The foot 16 of the hanger 6 is fixed to a portion of the side member 10 close to the upper end.

  As clearly shown in FIG. 4 and FIG. 5C, a recess 18 opened forward and inward is formed in the inner side surface of the side member 10 in the back frame 8 in a range closer to the upper side. The foot 16 of the hanger 6 is fixed to the lower part of the recess 18. The recess 18 has an inner surface 18 a and a back surface 18 b, and the back surface 18 b is continuous with the inner edge 18 c of the side member 10.

  On the other hand, the lower end surface of the foot 16 in the hanger 6 is formed so as to fit exactly in the recess 18 and overlap the inner edge 18 c of the side member 10. That is, the lower end surface of the foot 16 has a first surface 16a that overlaps the inner surface 18a of the recess 18, a second surface 16b that overlaps the back surface 18b of the recess 18, and a third surface that overlaps the inner edge 18c of the side member 10. Surface 16c. For this reason, the overall appearance is uneven.

  Then, the side member 10 of the back frame 8 is provided with a nut holding hole 19 that opens forward and a screw hole 20 that communicates with the nut holding hole 19 and opens on the inner side surface 18a of the recess 18. A nut 21 is fitted in 19 so as not to rotate. On the other hand, a mounting hole 22 into which the screw 17 is fitted is provided at the lower end of the foot 16 in the hanger 6. While the foot 16 of the hanger 6 is inclined so as to shift backward as it goes inward in plan view, the screw 17 is generally in a laterally long posture, and there is a countersink groove 23 on the front surface of the foot 16. Is forming.

  A protrusion 24 extending across the first surface 16a and the second surface 16b is provided on the lower portion of the foot 16 below the attachment hole 22, while the recess 18 of the side member 10 is provided in the recess 18 of the side member 10. The engaging groove 25 into which the protrusion 24 is fitted is formed. In addition to the lower end surface of the foot 16 overlapping the recess 18 and the inner edge 18 c of the side member 10, the protrusion 24 of the foot 16 is fitted in the engagement groove 25 of the side member 10. The foot 16 is firmly fixed to the side member 10.

  Further, as described above, the head of the screw 17 is located in the counterbore groove 23 formed on the front surface of the foot 16, and therefore, the head of the screw 17 cannot be seen from behind the chair, Since the support sheet 9 is disposed in front of the foot 16, the head of the screw 17 cannot be visually recognized from the front (or is difficult to visually recognize). For this reason, the hanger 6 can have an appearance as if the heel is integrally formed with the side member 10, and is therefore excellent in aesthetics. Moreover, the nut holding hole 19 is not visible at all or almost, and this aspect is also excellent in aesthetics.

  The foot 16 of the hanger 6 can be fixed to the side member 10 with a plurality of screws. A plurality of pairs of positioning means such as a combination of the protrusion 24 and the engagement groove 25 can be provided. Further, the recess 18 can be formed in an opening only on the inside (a form having a bottom surface, a front surface, and a back surface). It is also possible to converge the left and right foot bodies 16 into one and connect them to the bar portion 15.

(2). Headrest attachment structure As shown in the drawings in FIG. 6 and subsequent figures, the headrest 27 can be attached to the upper member 11 of the back frame 8. This point will be described next. The headrest 27 has a resin substrate 28. The board 28 is set to have a lateral width dimension that is about the same as the lateral length of the upper member 11 (the lateral width can be arbitrarily set), and is curved forwardly concave in a plan view and forwardly convex in a side view. Yes. Then, as shown in FIG. 6C, a cushion material 29 is stretched on the front surface of the substrate 28. The cushion material 29 is covered with a skin material such as a cloth.

  A lower portion of the substrate 28 is located behind the upper member 11, and a forward projecting portion 30 located on the lower side of the upper member 11 is projected forward at a lower end thereof. A center receiving portion 31 that is fitted to the upper member 11 from below is provided in the left and right intermediate portions of the forward projecting portion 30, and a side receiving portion 32 on which the upper member 11 is placed is provided in a portion closer to the left and right ends of the forward projecting portion 30. ing.

  The center receiving portion 31 is provided with an engaging groove 33 that opens upward in a side view in order to fit the upper member 11. On the other hand, the upper member 11 is formed with a pair of left and right cutout grooves 34 into which the side receiving portions 32 are fitted, so that the substrate 28 is held so as not to be displaced forward and backward and left and right.

  A rear support portion 35 that is positioned between the center receiving portion 31 and the side receiving portion 32 and that overlaps the rear surface of the upper member 11 is provided integrally with the lower portion of the substrate 28 and the forwardly projecting portion 30. Screw holes 37 penetrate vertically. A clamp body 37 is overlaid on the upper member 11 from above at the location of the rear support portion 35, and a nut (not shown) is non-rotatably fitted into a nut holding hole 38 formed in the clamp body 37, and is inserted into the screw hole 36. The upper member 11 is sandwiched between the clamp body 37 and the forward projecting portion 30 by screwing a screw (not shown) inserted from below into the nut.

  For example, as can be understood from FIG. 7A, the clamp body 37 is formed with a recess 38 that fits into the upper member 11 from above, and the recess 39 is fitted into the long groove 12 of the upper member 11. A round rib 40 is formed. The rib 40 fits into the long groove 12 while pressing the support sheet 9.

Patent Document 2 holds the upper member 11 from above and below, but Patent Document 2 does not have a function for positioning the left and right positions of the hanger 6, and therefore the right and left positions of the hanger may not be accurately positioned. There is. Moreover, since patent document 2 clamps an upper member in the back side of a support sheet, there exists a possibility that clamping intensity | strength cannot be made high.

  On the other hand, in the present embodiment, the left and right positions are accurately positioned by the notch grooves 34 provided in the upper member 11, and the entire upper member 11 is sandwiched from above and below, so that the fixing strength is also excellent. ing. In the present embodiment, the hanger 6 and the headrest 27 can be attached to the back frame 8 together. Since the hanger 6 is fixed to the side member 10, even if the headrest 27 extends to the left and right along the back surface of the upper member 11, there is no hindrance to the mounting of the hanger 6. This point is also one of the advantages of the present invention.

  The present invention can also be applied to a chair of the type in which a back frame is supported by a back frame 8 as in Patent Document 1. In addition, the support body is not limited to a support sheet such as a mesh, and a resin back plate (inner shell) can be used as the support body (in this case, even if a cushion material is stretched on the front surface) Good.)

  The present invention is useful when applied to a chair. Therefore, it can be used industrially.

DESCRIPTION OF SYMBOLS 5 Backrest 6 Hanger 8 Back frame 9 Support sheet as an example of support body 10 Side member 11 Upper member 15 Bar part which constitutes hanger 16 Foot which constitutes hanger 17 Screw 18 Side member recess 27 Headrest

Claims (1)

It has a backrest and a hanger attached to it,
The backrest includes a back frame to which a support body that supports the body pressure of a seated person is directly or indirectly attached, and the back frame includes left and right side members that are vertically long and connected to the upper end thereof. While it is a form having a horizontally long upper member,
The hanger has left and right feet fixed to the side members of the back frame, and left and right horizontally long bar portions provided at the upper ends of the feet.
Chair.

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