JP6204651B2 - Chair - Google Patents

Description

This patent relates to a chair provided with an optional item (auxiliary member) such as a hanger .

Attaching a hanger as an optional item to the chair back is widely performed, and as an example, the hanger is fixed to the back of the backrest with a screw (screw). This screwing method has an advantage that high fastening strength can be ensured, but there is a problem that the head of the screw is exposed to the back and the aesthetic appearance is impaired. In this regard, Patent Document 1 discloses that a portion of the hanger where the screw head is located is formed in a recess, and a flat cap is attached to the recess to conceal the screw head. .

  In Patent Document 1, two left and right foot portions project forward from the cap, and the foot portion is held against a hole provided in the hanger so as to prevent the cap from being pulled out. .

JP 2012-61158 A

In Patent Document 1, since the screw head is not exposed, it is excellent in aesthetics . However, since the cap is only attached using the elastic force of the foot, if the fitting of the foot is poor due to processing errors, for example, It may become easy to come off when an object touches the cap.

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

The present invention is
A backrest and an optional item disposed on the back part of the backrest, wherein the optional article has a vertical support column, and the support column is fixed to the back part of the backrest with a screw; and In addition, the support is configured to be attached to the support so as to surround the support and hide the screw head.
The auxiliary cover has a side wall that surrounds the support post of the optional product from the left and right and the back, and a top plate that is integrally continuous with the upper end of each side wall, and the top plate is fitted into the support post of the optional product from below. It is a structure that is pre-fitted into the column before attaching the optional item to the backrest, and can be shifted upward from the state of hiding the screw. While it is set so that the head of the screw is hidden by shifting the auxiliary cover down,
The backrest has a back frame as a strength member and a back cover that covers the back surface of the backrest, and the bracket that fixes the optional support post with the screw on the back surface of the upper end of the back frame is another screw. For this reason, the back cover has a watermark hole that exposes the metal fitting backward, and the front end of the top plate in the auxiliary cover is connected to the upper opening edge of the watermark hole in the back cover. It is made to contact from behind.

As optional items of the present invention, there are a headrest, a shoulder rest, an article storage basket, etc. in addition to a hanger. Of course, as an optional product , an article having another function (for example, a display panel) can be attached.

The invention of claim 2 embodies claim 1, and in this invention, the metal fitting is in the form of an open U shape in a side view when the upward front piece and the rear piece are connected at the bottom, The front piece is fixed to the back frame, the post is fixed to the rear surface of the rear piece with screws, and the post is surrounded by the auxiliary cover from behind.

In the present invention, since the auxiliary cover surrounds an optional support column such as a hanger, the auxiliary cover does not easily come off even when a backward-facing external force is applied. In addition, since the auxiliary cover itself has an appearance like a part of an optional product , it can be said that it has no nuance of “hidden” and is excellent in beauty .

Moreover, in this invention, since an auxiliary | assistant cover is hold | maintained so that it cannot fall after fixing an option goods to a backrest, high attachment intensity | strength can be ensured and it is especially suitable. Moreover, in this invention, since the freedom of an attachment structure can be improved by interposing a metal fitting, and since a metal fitting is also hidden by an auxiliary cover, the problem of deterioration of the aesthetics by using a metal fitting does not arise. That is, it is possible to increase the fastening strength by using the metal fitting without causing a problem of aesthetic deterioration .

In the present invention, since the watermark hole of the back cover is closed by the auxiliary cover, it is particularly preferable that the auxiliary cover and the back cover are integrated. In this case, when the stretched Tsu collision the upper portion of the auxiliary cover to the back cover as in the embodiment, since it is possible to restrict the height of the auxiliary cover without special stopper to take measures, there is an advantage of simplifying the structure.

It is a figure which shows the chair which concerns on 1st Embodiment, (A) is the whole perspective view seen from the front, (B) is the whole perspective view seen from back. (A) is a rough separated perspective view of the chair of FIG. 1, (B) is a perspective view which shows the support mechanism of a backrest. It is the isolation | separation perspective view of the principal part, (A) was seen from the front, (B) was seen from the back. (A) is a perspective view in a state where a back frame is omitted, and (B) and (C) are perspective views showing a relationship among a hanger , a metal fitting, and an auxiliary cover. (A) (B) is the isolation | separation perspective view of the principal part. It is a perspective view of an auxiliary cover. It is sectional drawing which looked at the backrest by the VII-VII eyes | visual_axis of FIG. 4 (A). (A) is sectional drawing which looked at the backrest by the VIIIA-VIIIA line of sight of FIG. 4 (A), (B) is the fracture | rupture perspective view which shows the relationship between an auxiliary | assistant cover and a back cover. It is a figure which shows 2nd Embodiment, (A) is a principal part perspective view, (B) is a separate perspective view. Each of the drawings is a perspective view of the auxiliary cover. (A) (B) is a perspective view which shows the relationship between an auxiliary cover, a hanger, and a metal fitting, (C) is a perspective view which shows the relationship between a hanger and an auxiliary cover. (A) is the perspective view which looked at the hanger apparatus from diagonally downward, (B) is the bottom view which showed a part of metal fitting with the virtual line.

(1). First Embodiment 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 an office, and the chair has a leg device 1 with a caster, a seat 2 and a backrest 3. The base 4 opened upward is fixed.

  The backrest 3 has a back frame 5 that opens in the front-rear direction and a back cover 6 that covers the back of the back frame 5, and a mesh material 5 ′ is stretched on the back frame 5. The back cover 6 is attached to the back frame 5 by fitting engagement protrusions 6 ′ provided so as to jump in the circumferential direction into engagement holes provided in the back frame 5. The back frame 5 is connected to the base 4 via a support arm 4a so as to be tiltable rearward.

  The back frame 5 includes left and right side members 5a, left and right long upper members 5b connected between the upper ends of the left and right side members 5a, and a lower member 5d connected between the lower ends of the left and right side members 5a via an inclined portion 5c. have. The back cover 6 has a shape similar to that of the back frame 5 and opens in the front-rear direction. For this reason, the back cover 6 also includes a side member 6a, an upper member 6b, an inclined portion 6c, and a lower member 6d. Further, as can be understood from FIG. 3, for example, the inner periphery of the back cover 6 is constituted by an inner wall 6e protruding forward, and therefore the back cover 6 has a groove-like shape with a front opening.

A hanger device 7 as an example of an optional product (auxiliary member) is fixed to the upper member 6 a of the back frame 5. This point will be described next. For example, as shown in FIG. 3, the hanger device 7 includes a metal fitting 8 fixed to the upper member 6 a of the back frame 5 from behind, and a horizontal horizontal portion (clothing portion) 10 on the upper end of the vertically long column 9. It has a front-view T-shaped hanger (hanger body) 11 provided, and an auxiliary cover 12 fitted into a support 9 of the hanger 11.

  The upper member 6a of the back cover 6 has a horizontally oblong watermark hole 13 for exposing the metal fitting 8. The upper member 5b of the back frame 5 has a substantially triangular cross-sectional shape that decreases in the front-rear width as it goes up, and the front surface tilts backward with a loosely curved surface so that it moves backward as it goes up. .

The metal fitting 8 is in the shape of an open U-shape in which the front piece 8a facing upward and the rear piece 8b are connected at the bottom, and the front piece 8a is connected to the upper member 6a of the back frame 5 with two screws 14 on the left and right. It is fixed. For example, as shown in FIG. 5B, the upper member 6a of the back frame 5 is formed with a support boss portion 5b 'with a hole where the front piece 8a of the metal fitting 8 overlaps. As shown in FIG. 8 (A), the screw 14 is screwed into a nut 15, and the nut 15 is fitted into a countersink hole 16 of a forward opening provided in the upper member 6 a of the back frame 5 and is held unrotatable. ing.

  Further, as shown in FIG. 7, a positioning hole 17 is provided in the front piece 8 a of the metal fitting 8, and positioning and a protrusion 18 provided on the upper member 6 a of the back frame 5 are fitted in the positioning hole 17. In this case, the metal fitting 8 is held non-rotatable by making the positioning hole 17 and the positioning projection 18 square (rectangular). For this reason, it is possible to reduce the labor of the attachment work, but this is one of the advantages of this embodiment.

  The support 9 of the hanger 11 is formed with a longitudinal groove 19 that opens to the front and the bottom, and the left and right opening edges of the groove 19 are lips 19a that project inwardly. Therefore, the vertical groove 19 is a dovetail. The hanger 11 can also be used as a height-adjustable type. Therefore, the present embodiment also has a feature that the height-adjustable type hanger 11 can be used.

As can be understood from FIG. 4B, the rear piece 8b of the metal fitting 8 is fitted into the vertical groove 19 of the support column 9, and one screw (screw) 20 penetrating the support column 9 is screwed into the rear piece 8b. However, since the rear piece 8b is tightly fitted in the longitudinal groove 19, it is fastened to the left and right while being fastened by one screw 20. The female screw hole 21 of the rear piece 8b is formed in the burring portion.

The auxiliary cover 12 is made of resin, and has a side wall that surrounds the support 9 of the hanger 11 from the left and right and the back, and a top plate 12a that is integrally continuous with the upper end of each side wall. A hole 22 into which 9 is fitted is made. Accordingly, as shown by the one-dot chain line in FIG. 7, when attaching the hanger 11, before fixing the hanger 11, the auxiliary cover 12 is fitted into the support column 9 before being fixed, and then shifted above the set height, By fixing the hanger 11 to the metal fitting 8 with the screw 20 and then shifting it downward, the metal fitting 8 and the head of the screw 20 are hidden. The auxiliary cover 12 is held so as not to drop.

  The top plate 12 a of the auxiliary cover 12 is provided with a flange portion 23 that enters the vertical groove of the support column 9. In addition, inward auxiliary ribs 12 are provided with inward ribs 24 positioned on the left and right outer sides of the support column 9, and a notch 24 a that fits in the bottom of the metal fitting 8 is formed at the lower end of the inward ribs 24. As a result, the height position of the auxiliary cover 12 is restricted, and the lower portion of the auxiliary cover 12 is held so as not to be laterally displaced.

  On the other hand, as shown in FIG. 6, for example, a front rib piece 25 and a rear rib piece 26 are formed at both left and right ends of the opening edge of the hole 22 in the auxiliary cover 12 to sandwich the support 9 of the hanger 11 from the front and rear. . The support 9 of the hanger 11 is elastically sandwiched between the front and rear rib pieces 25 and 26. For this reason, the auxiliary cover 12 is held in a state without backlash.

  As can be understood from FIG. 8, a downward lip 27 is formed at the front end of the top plate 12 a in the auxiliary cover 12, and the downward lip 27 is formed at the upper end edge of the upper member 6 b in the back cover 6 (opening edge 13 a of the watermark hole 13). Elastically contacted from behind. That is, the auxiliary cover 12 is elastically in contact with the upper member 5b of the back cover 6 from behind using the elastic deformation of the auxiliary cover 12 and the elastic deformation of the upper member 5b of the back cover 6.

  Therefore, the auxiliary cover 12 is in a state where the upper end of the auxiliary cover 12 is stretched against the back cover 6, and therefore, the auxiliary cover 12 cannot be shifted upward unless a certain amount of force is applied. Therefore, the auxiliary cover 12 is held in a state without backlash. At the upper end edge of the upper member 5 b in the back cover 6, a guide surface 28 is formed which becomes higher toward the front side in order to attract the downward lip 27 of the auxiliary cover 12. Therefore, the guide surface 28 is also formed on the opening edge 13 ′ of the watermark hole 13.

As shown in FIGS. 7 and FIG. 8 (A), the front end of the lower end of the left and right side walls of the auxiliary cover 12 is in contact with the lower end of your Keru upper member 6b on the back cover 6. In the state where the auxiliary cover 12 is set at a predetermined height, the front end of the lower end of the auxiliary cover 12 is located between the upper end edges of the upper member 5b of the metal fitting 8, and therefore the auxiliary cover 12 is moved in the posture of FIG. When sliding downward from the state of the one-dot chain line, the front end of the lower portion of the auxiliary cover 12 can be held at the upper end of the upper member 5b in the back cover 6, but the auxiliary cover 12 is slightly rotated counterclockwise from the posture of FIG. By moving downward in the posture, it can be slid downward without being held by the upper member 5b of the back cover 6.

When the notch 24a of the inward rib 14 contacts the bottom of the metal fitting 8, the auxiliary cover 12 is held in a predetermined posture, and the auxiliary cover 12 is not rattled in a predetermined posture at a predetermined height position. Kept in a state. When the hanger device 7 is not attached , the watermark hole 13 of the back cover 6 is closed with a cap. Therefore, as shown in FIGS. 7 and 8, the opening edge 13 'of the watermark hole 13 forms a step portion 29 into which the cap fits.

Note that the width of the watermark hole 13 of the back cover 5 is defined by the width of the bracket 8, while the width of the auxiliary cover 12 is defined by the width of the column 9 of the hanger 11. It is defined by the horizontal width. The auxiliary cover 12, since preferably as small as possible while retaining the ability to hide the post 9 and the bracket 8, for example, as can be understood from FIG. 4 (A), the little than the width of the lateral width watermark hole 13 It is a big degree. Therefore, most of the left and right full length of the auxiliary cover 12 abuts against the opening edge of the watermark hole 13 from behind, but the opening edge 13 ′ of the watermark hole 13 is more easily elastically deformed than other parts, so The cover 12 can be easily fitted.

(2). Second Embodiment Next, a second embodiment shown in FIGS. For example, as shown in FIG. 9, in this embodiment, the lower end of the support 9 of the hanger 11 is substantially aligned with the lower end of the auxiliary cover 12, and therefore the support 9 does not protrude below the auxiliary cover 12. Therefore, the hanger device 7 is refreshing. On the other hand, for example, as shown in FIG. 11A, the rear piece 8b of the metal fitting 8 extends to the upper end of the vertical groove 19 of the support column 9 in the hanger 11, so that the strength and stability of the hanger 11 are remarkably improved. .

In the present embodiment, as shown in FIG. 10 and FIGS. 11A and 11C, a plate-like hanging piece 30 is provided so as to protrude downward from a portion of the top plate 12a of the auxiliary cover 12 on the front side of the hole 22. On the rear surface (back surface) of the hanging piece 30, there are provided vertically elongated ribs 30 a that come into contact with or in close contact with the front surface of the rear piece 8 b of the metal fitting 8 (a forward-facing reinforcing rib 30 b is also provided ). On the other hand, on the back inner surface of the auxiliary cover 12, a pair of left and right rear longitudinal ribs 31 that are in contact with or in close contact with the back surface of the support 9 in the hanger 11 are provided.

Therefore, the auxiliary cover 12 is held by the rear piece 8b of the metal fitting 8 and the support 9 of the hanger 11 so that it cannot be displaced forward and backward. The auxiliary cover 12 of this embodiment also includes a pair of left and right inward ribs 24, and the inward ribs 24 prevent the auxiliary cover 12 from rattling (blurring) in the left and right directions.

Inwardly piece 24 of the auxiliary cover 12 is in contact against the bottom of the first embodiment similarly to fitting 8, in this embodiment, for example, as shown in FIG. 12, the auxiliary cover 12, the fitting 8 from left and right sides on the lower surface of the bottom portion is provided with a mowing pair of right and left engaging claws 32 hooked from below.

Therefore, the auxiliary cover 12, together with the right and left play is prevented by the engagement claw 32 is upwardly escape non retained. As shown in FIG. 10, the engaging claw 32 has a tongue-like shape protruding downward. For this reason, when the auxiliary cover 12 is pushed downward , the left and right engaging claws 32 are temporarily extended so as to widen each other. When it is elastically deformed and the auxiliary cover 12 is pushed in completely, it engages with the bottom of the metal fitting 8. Thus, the auxiliary cover 12 with is held in vertical movement non ability, as in the first embodiment, the upper edge is taut from behind the opening edge of the watermark hole 13 in the rear cover 5, Therefore, the overall It is held in a state without backlash.

  As mentioned above, although embodiment of this invention was described, this invention can be variously embodied other than said embodiment. For example, it is not necessary to provide a vertical groove on the support column of the hanger, and it may be a simple bar shape. Various shapes such as a horizontally long rectangle, a circle, and an ellipse can be adopted for the cross-sectional shape of the column.

The present invention can also be applied to a backrest in which a back frame is formed in a shell shape. The back frame is not limited to the front / rear opening type or the shell shape, but may be a back column that is long in the vertical direction. It is also possible to adopt a method in which the auxiliary cover is fitted into the hanger column from below. The auxiliary cover may be fixed to the bracket and the back frame by screws inserted from below (in this case, the screw is not aesthetic problems can not be visually recognized under normal conditions.).

  The present invention can be actually embodied. Therefore, it can be used industrially.

DESCRIPTION OF SYMBOLS 3 Backrest 5 Back frame 5b Upper member of back frame 6 Back cover 6a Upper member of back cover 7 Hanger device 8 Metal fitting 8a Front piece 8b Rear piece 9 Hanger column 10 Hanger horizontal part (clothing part)
11 Hanger as an example of optional product 12 Auxiliary cover
12a Top plate 13 Openwork hole
13a Opening edge of watermark hole 14 Screw for fastening metal fitting 15 Nut 20 Screw for fastening hanger 24 Inward rib 25, 26 Rib piece

Claims (2)

A backrest and an optional item disposed on the back part of the backrest, wherein the optional article has a vertical support column, and the support column is fixed to the back part of the backrest with a screw; and In addition, the support is configured to be attached to the support so as to surround the support and hide the screw head.
The auxiliary cover has a side wall that surrounds the support post of the optional product from the left and right and the back, and a top plate that is integrally continuous with the upper end of each side wall, and the top plate is fitted into the support post of the optional product from below. It is a structure that is pre-fitted into the column before attaching the optional item to the backrest, and can be shifted upward from the state of hiding the screw. While it is set so that the head of the screw is hidden by shifting the auxiliary cover down,
The backrest has a back frame as a strength member and a back cover that covers the back surface of the backrest, and the bracket that fixes the optional support post with the screw on the back surface of the upper end of the back frame is another screw. For this reason, the back cover has a watermark hole that exposes the metal fitting backward, and the front end of the top plate in the auxiliary cover is connected to the upper opening edge of the watermark hole in the back cover. Abutting from behind,
Chair. The metal fitting is in the form of an open U-shape in which the front piece and the rear piece facing upward are connected to each other at the bottom, and the front piece is fixed to the back frame, and the column is mounted on the rear face of the rear piece. Is fixed with a screw, and the column is surrounded by the auxiliary cover from behind,
The chair according to claim 1.

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