JP7154935B2 - chair backrest and chair with it - Google Patents

Description

The present invention relates to a chair backrest and a chair including the same.

2. Description of the Related Art Conventionally, a configuration is known in which a backrest of a chair is provided with a decorative member covering the surface of the backrest main body.
In such a chair, an engaging portion (locking claw) formed on the decorative member (cover) engages with an engaged portion (engaging hole) formed on the back surface of the backrest main body (back rod). By doing so, a configuration is disclosed in which the backrest is supported by the main body (for example, Patent Document 1). By adopting the above configuration, the decorative member is prevented from being displaced from the backrest main body and falling off.

JP-A-2002-136388

However, the engagement between the locking pawl and the engaging hole in Patent Literature 1 puts the locking pawl in a so-called non-fitting state, which makes it difficult to appropriately release the engagement. Therefore, it is difficult to replace the cover when necessary.
Therefore, a configuration is desired in which the decorative member (cover) can be satisfactorily attached to the backrest main body (back rod) and the mutual engagement state can be easily released.

The present invention has been made in view of the above technical problems, and it is possible to easily release the engagement state between the decorative member and the backrest main body, so that the decorative member can be appropriately replaced as necessary. To provide a chair backrest and a chair with the same, which can be

A chair backrest according to one aspect of the present invention comprises a backrest main body having a front surface for supporting the back of a sitter;
a decorative member arranged on the rear surface side of the backrest main body and attached to the rear surface of the backrest main body with the front surface thereof facing the front surface; an engaging portion provided on either one of the connecting member and the backrest main body, comprising: a connection member connecting the backrest main body; and a face member forming the front surface of the backrest main body; The connecting member and an engaged portion provided on the other of the backrest main body, the connecting member being in a state where the engaging portion and the engaged portion are engaged with each other. and a pressing portion exposed in a space between the rear surface side of the face member and the front surface side of the decorative member .

According to this configuration, since the pressing portion of the connection member is exposed in the space on the rear side of the face member forming the front surface of the backrest, the pressing portion of the connection member can be pressed from the front side of the backrest main body. , the engaged state between the engaging portion and the engaged portion can be released, and the decorative member can be removed from the backrest main body as required. Further, since the pressing portion of the connecting member is hidden by the face material, frequent access to the pressing portion from the front side of the backrest body can be prevented, and the engagement between the engaging portion and the engaged portion can be released. can be prevented from being done unintentionally.

In one aspect of the chair backrest of the present invention, the connection member has a joint portion to which the front surface of the decorative member is joined, and the joint portion has the pressing portion that is attached to the front surface side of the backrest main body. It may be configured such that it is elastically deformed in a convex shape toward the decorative member by being pressed toward the rear surface from the top.

According to this configuration, the decorative member can be pushed out in a direction away from the backrest main body by elastically deforming the joint portion in a convex shape. As a result, the gap between the decorative member and the backrest main body is increased, making it easier to remove the decorative member from the backrest main body.

In one aspect of the chair backrest of the present invention, the connecting member may be loop-shaped in plan view.

According to this configuration, the connection member is likely to be elastically deformed by pressure from the front side. Therefore, the joint portion is elastically deformed into a convex shape more easily, and the decorative member can be pushed out in a direction away from the backrest main body, so that the decorative member can be easily removed.

In the chair backrest of one aspect of the present invention, the backrest main body includes a back support surface forming portion having the face member and an outer peripheral frame member on which the face member is installed, and a rear surface of the back support face forming portion. and a backrest support member for supporting, and when the engaged portion is provided on the backrest support member, the engaged portion is the rear surface of the face member of the backrest support member. and a rear surface facing the decorative member, and has at least a through hole capable of holding the connecting member inside.

According to this configuration, since the connecting member is held in the engaged hole, the portion other than the pressing portion can be hidden in the backrest support member, and the appearance of the backrest can be improved. .

In one aspect of the chair backrest of the present invention, the backrest support member may have a configuration in which the front surface is separated from the rear surface of the panel member.

According to this configuration, the pressing portion can be pressed by inserting a hand between the rear surface of the surface material of the back support surface forming portion and the front surface of the backrest support member. Thereby, the decorative member can be easily removed from the backrest main body (backrest support member).

In one aspect of the chair backrest of the present invention, the front surface of the pressing portion held in the through hole and the front surface of the backrest support member may be flush with each other.

According to this configuration, since the connecting member does not enter the engaged hole, it is easy to press the front surface of the pressing portion from the front surface of the backrest support member.

In one aspect of the chair backrest of the present invention, the face member may be made of a mesh member.

According to this configuration, the face member made of the mesh member hides the position of the pressing portion, and the position can be easily confirmed by looking closely. As a result, the appearance of the backrest is not spoiled during normal use, and the position of the pressing portion can be easily confirmed when removing the decorative member, which facilitates the work.

A chair in one aspect of the present invention comprises the above chair backrest.

According to this configuration, since the backrest is provided so that the decorative member can be replaced as required, the exterior design of the chair can be easily changed according to the application.

ADVANTAGE OF THE INVENTION According to the present invention, there is provided a chair backrest which can easily release the engagement state between the decorative member and the backrest main body, and can appropriately replace the decorative member as necessary. The purpose is to provide a chair.

FIG. 1 is a front view showing the configuration of a chair in one aspect of the embodiment. FIG. 2 is a rear view showing the configuration of the chair in one aspect of the embodiment. FIG. 3 is a side view showing the configuration of the backrest of the chair in one aspect of the embodiment. FIG. 4 is a perspective view partially showing the configuration around the backrest supporting member in one aspect of the embodiment. FIG. 5 is a perspective view partially showing the configuration of the backrest supporting member in one aspect of the embodiment. FIG. 6 is a perspective view showing a state in which the decorative member in one aspect of the embodiment is attached to the backrest supporting member via the connecting member. FIG. 7 is a perspective view showing a configuration of a connection member in one aspect of the embodiment; FIG. 8 is a side view showing a configuration of a connection member in one aspect of the embodiment; FIG. 9 is a perspective view showing the configuration of a connection member as a modification. FIG. 10 is a diagram showing the operation of the connection member as a modification.

EMBODIMENT OF THE INVENTION Hereinafter, with reference to an accompanying drawing, the form for implementing the backrest and the chair provided with the same in this invention is demonstrated. However, the invention is not limited to this embodiment only. In addition, in each drawing below, in order to make each component easy to see, the scale of the dimensions may be changed depending on the component.

In the following description, the direction facing the front of a person seated in a normal posture with the back facing the backrest of the chair is called "front", and the direction opposite to it is called "rear". In addition, the upward direction of a person sitting on a chair in a normal posture is called "up", the opposite direction is called "down", the left side of a person sitting in a normal posture is called "left", and the right side is called "left". is called "right". Also, the lateral direction of the chair is called the "width direction".

Also, in the drawings, an XYZ coordinate system is appropriately shown as a three-dimensional orthogonal coordinate system. In the XYZ coordinate system, the "X direction" is a direction parallel to the "width direction" of the chair shown in FIG. The "Z direction" is a direction perpendicular to the X direction, which is the "vertical direction" in FIG. The “Y direction” is defined as the “front-rear direction” orthogonal to both the X direction and the Z direction.

FIG. 1 is a front view showing the configuration of a chair in one aspect of the embodiment. FIG. 2 is a rear view showing the configuration of the chair in one aspect of the embodiment. FIG. 3 is a side view showing the configuration of the backrest of the chair in one aspect of the embodiment. FIG. 4 is a perspective view partially showing the configuration around the backrest supporting member in one aspect of the embodiment. FIG. 5 is a perspective view partially showing the configuration of the backrest supporting member in one aspect of the embodiment. FIG. 6 is a perspective view showing a state in which the decorative member in one aspect of the embodiment is attached to the backrest supporting member via the connecting member. FIG. 7 is a perspective view showing a configuration of a connection member in one aspect of the embodiment; FIG. 8 is a side view showing a configuration of a connection member in one aspect of the embodiment; FIG. 9 is a perspective view showing the configuration of a connection member as a modification. FIG. 10 is a diagram showing the operation of the connection member as a modification.

As shown in FIGS. 1 and 2, the chair 1 of this embodiment includes legs 2 placed on the floor, box-shaped support bases 3 installed on the upper ends of the legs 2, and a seated person. A seat body 4 on which a person sits, a seat support member 5 that is attached to the upper surface of the support base 3 and supports the seat body 4, and a seat support member 5 that extends from the support base 3 to the rear upper side to support the back of the seated person seated on the seat body 4. a supporting backrest 6;

The leg portion 2 includes a manifold leg 7 with casters 7a, and a pedestal 8 erected from the central portion of the manifold leg 7 and incorporating a gas spring as an elevating mechanism.

The support base 3 is attached to the upper end of the pedestal 8 . The support base 3 incorporates an elevation adjustment mechanism for the pedestal 8 and a tilt adjustment mechanism for the backrest 6 .

As shown in FIG. 1 , the seat body 4 includes a seat body outer peripheral frame main body portion 13 forming a skeleton and a seat body surface material 14 stretched on the seat body outer peripheral frame main body portion 13 .

The seat outer peripheral frame body 13 is made of synthetic resin, for example, and has a substantially rectangular shape with four rounded corners when viewed from above. A groove 13m recessed inwardly of the seat outer peripheral frame main body portion 13 is continuously formed in the outer peripheral edge portion of the seat outer peripheral frame main body portion 13 in the circumferential direction.

The seat body surface member 14 is made of a mesh member having a large number of holes, and is provided with a rim member (not shown) at the outer peripheral edge. The outer peripheral end portion of the seat body face member 14 is caught in the groove 13m formed in the seat body outer peripheral frame body portion 13, and the seat body outer frame body portion 13 is moved by the edge member inserted into the groove 13m. is fixed to

The backrest 6 supports the load from the back of the person seated on the seat body 4 . A portion of the backrest 6 is connected to a tilt adjustment mechanism within the support base 3 . Further, the support base 3 is provided with an operation knob 12 for operating the tilt adjustment mechanism, and the seated person operates this operation knob 12 to tilt the backrest 6 in the front-rear direction (Y direction). You can adjust the reaction force when you let it.

A specific configuration of the backrest 6 in this embodiment will be described below.
The backrest 6 includes a backrest main body 20, a decorative member 23, a backrest support member 22, an attachment member 24, and a connection member 30, as shown in FIGS.

[Backrest body]
The backrest main body 20 includes a backrest surface forming portion 21 and a backrest support member 22 .

(Back receiving surface forming portion 21)
As shown in FIGS. 1 and 2, the backrest surface forming portion 21 includes a backrest outer peripheral frame member (peripheral frame member) 28 and a backrest surface material (surface material ) 29 and

The backrest outer frame member 28 includes a pair of vertical rods 28a, 28a spaced apart in the width direction (X direction), an upper rod 28b, and a lower rod 28c. The backrest outer peripheral frame member 28 is formed into an annular frame shape as shown in FIGS. 1 and 2 by these vertical rods 28a, 28a, upper rod 28b, and lower rod 28c. The backrest outer frame member 28 is made of resin, aluminum alloy, or the like, for example. A groove 28m (FIG. 3) recessed toward the inside of the backrest outer peripheral frame member 28 is formed continuously in the outer peripheral edge portion of the backrest outer peripheral frame member 28 in the circumferential direction.

As shown in FIGS. 1 and 2, the backrest surface material 29 has a mesh shape with a large number of holes formed therein, and is provided with a rim (not shown) at the outer peripheral edge (not shown). The outer peripheral edge (not shown) of the backrest surface member 29 is caught in a groove 28m formed in the backrest outer peripheral frame member 28 shown in FIG. (not shown) is fixed to the backrest outer peripheral frame member 28 . The back of the person sitting on the seat body 4 contacts the backrest panel 29 forming the front surface 20a (FIG. 1) of the backrest main body 20. As shown in FIG. By providing the cloth-like backrest surface member 29 on the backrest outer peripheral frame member 28, the back of the seated person can be supported with appropriate elasticity.

(Back receiving surface constituent part)
As shown in FIGS. 3 and 4, a backrest support member 22 is arranged on the rear surface 21b side of the backrest surface forming portion 21. As shown in FIGS. The backrest support member 22 supports the back support surface forming portion 21 described above. The backrest surface forming portion 21 is fixed to the backrest support member 22 via a plurality of fasteners. The fastener is composed of, for example, a set screw and a nut screwed thereon, and fastens the backrest support member 22 and the backrest outer peripheral frame member 28 . The set screws are inserted into a plurality of fixing holes 28g formed in the vertical rods 28a of the backrest outer peripheral frame member 28 shown in FIG. 4 and holes 22g formed in the backrest support member 22 shown in FIG. be done. It should be noted that the means for attaching the back support surface forming portion 21 and the backrest support member 22 is not limited to the fasteners described above. As shown in FIG. 4, the backrest outer peripheral frame member 28 is provided with a cover member 15 so as to hide the fixing holes 28g.

The backrest support member 22 also supports the seat body 4 . Although a detailed description of the means for attaching the backrest support member 22 and the seat body 4 is omitted, for example, fasteners such as those described above may be employed.

As shown in FIG. 2, the backrest support member 22 has a shape that follows a part of the outer shape of the backrest outer peripheral frame member 28 . As shown in FIGS. 2 and 3, the backrest support member 22 has a pair of side portions 22A, a first connecting portion 22B, a second connecting portion 22C, and a pair of extending portions 22D. there is 3, illustration of one side portion 22A and the extension portion 22D is omitted.

A pair of side portions 22A, 22A of the backrest support member 22 shown in FIG. . The backrest support member 22 includes a pair of side portions 22A, 22A extending in the vertical direction (Z direction), a first connecting portion 22B (FIG. 3) connecting the upper ends of the side portions 22A, 22A, and a lower end. A part thereof is formed in an annular shape as shown in FIG. Through the opening 22e of the backrest support member 22, the backrest surface member 29 of the backrest surface forming portion 21 is exposed.

3 and 4, the backrest support member 22 has a pair of side portions 22A bent at predetermined positions in the extending direction thereof, and the second connecting portion 22C and the pair of extending portions 22A. The portion 22D faces the lower surface side of the seat body 4 shown in FIGS.

As shown in FIGS. 4 and 5, the backrest support member 22 is formed with an engaged hole (through hole) 27 that holds a connection member 30 (described later) in an engaged state. The engaged hole 27 is positioned substantially in the center in the extending direction of the first connecting portion 22B of the backrest support member 22 and penetrates in the thickness direction from the front surface 22a to the rear surface 22b. As shown in FIG. 6, inside the engaged hole 27, a pair of engaged portions 27A, 27A projecting inward in the width direction (X direction) of the backrest support member 22 are provided. .

The pair of engaged portions 27A, 27A are portions with which a portion of the connecting member 30 inserted into the engaged hole 27 engages. The engaged portion 27A has a greater thickness in the direction of engagement with the connecting member 30 (Y direction) than in the width direction (X direction), thereby increasing its rigidity.

The engaged portion 27A has an engaged surface 27V facing the front surface 22a of the backrest support member 22. As shown in FIG. The engaged surface 27V is obliquely inclined with respect to the front surface 22a, and is thicker at the distal end side than the proximal end side of the engaged portion 27A in the width direction (X direction).

(Connecting member)
As shown in FIG. 6, the connecting member 30 is inserted into the engaged hole 27 from the rear surface 22b side of the backrest supporting member 22 and held therein. As shown in FIG. 7, the connection member 30 includes a pair of side portions 31, 31 spaced apart from each other, a pressing portion 32 connecting one end sides of the side portions 31, 31, and the other end side of the side portions 31, 31. It has a joint portion 33 for connecting them together and a pair of engaging portions 34 , 34 provided on both sides in the extending direction of the pressing portion 32 . The connecting member 30 has an opening 35 formed by the pair of side portions 31 , 31 , the pressing portion 32 and the joining portion 33 . The connection member 30 of the present embodiment has a rectangular loop shape in plan view from the Z direction, and is elastically deformable.

The pair of engaging portions 34, 34 are portions that engage with the engaged portions 27A (FIG. 6) of the backrest support member 22. As shown in FIG. As shown in FIG. 7, the engaging portions 34, 34 are located outside the side portions 31, 31 in the width direction (X direction) and protrude in directions opposite to each other. Also, the thickness in the engagement direction (Y direction) with the backrest support member 22 is increased to increase the rigidity in the engagement direction (Y direction).

The engaging portion 34 has an engaging surface 34</b>V facing the inner surface 33 a of the joint portion 33 . As shown in FIG. 6, the engaging surface 34V is positioned so as to extend from the engaged portion 27A in the front-rear direction (Y direction) of the backrest 6 when the connecting member 30 is inserted into the engaged hole 27. As shown in FIG. It faces the surface 27V and contacts and engages with the engaged surface 27V. As a result, movement of the connection member 30 with respect to the backrest support member 22 in the withdrawal direction (−Y direction) opposite to the insertion direction (+Y direction) is restricted.

In this embodiment, the engaging surface 34V of the connecting member 30 and the engaged surface 27V of the backrest supporting member 22 are inclined with respect to the engaging direction (Y direction) and the vertical direction (Z direction), respectively. are in intimate contact with each other.

Specifically, as shown in FIGS. 6 and 7, the engaging surface 34V of the connecting member 30 is inclined toward the side portion 31 in a plan view from the Z direction, and the back is inclined in the opposite direction. It is in surface contact with the engaged surface 27V of the lean support member 22 .
As a result, the engaging surface 34V of the connecting member 30 is engaged with the engaged surface 27V of the backrest support member 22 so as to be hooked, and the connecting member 30 moves in the detachment direction (-Y direction). are more regulated.

8, the engaging surface 34V of the connecting member 30 is further inclined toward the lower surface 30d of the connecting member 30 in a side view from the +X direction. The engaged surface 27V of the backrest support member 22 is also inclined upward, and by engaging with each other, the connecting member 30 moves in the width direction (X direction) and the vertical direction (Z direction). Tatsuki is regulated.

As shown in FIGS. 3 and 5, the pressing portion 32 of the connecting member 30 is pressed against the front surface 22a of the backrest supporting member 22 while the connecting member 30 is engaged and held in the engaged hole 27 of the backrest supporting member 22. and the rear surface 29b of the backrest panel 29. As shown in FIGS. 4 and 6, the front surface 32a of the pressing portion 32 is preferably flush with the front surface 22a of the backrest support member 22. As shown in FIGS. Since the front surface 32a of the connecting member 30 does not enter the front surface 22a of the backrest support member 22 (backward: -Y direction), the front surface 32a of the pressing portion 32 is pressed from the front surface 22a side of the backrest support member 22. It's easy to do.

In addition, the thickness T of the pressing portion 32 is thinner than the thickness of other portions of the connecting member 30 in the engaging direction (Y direction) between the connecting member 30 and the engaged hole 27 . That is, the pressing portion 32 is formed with the thinnest thickness among the connecting members 30, and has a thickness that facilitates elastic deformation in the engagement direction (Y direction).

The joint portion 33 is exposed on the rear surface 22 b of the backrest support member 22 while the connection member 30 is engaged and held in the engaged hole 27 of the backrest support member 22 . A joint member 36 for connecting the decorative member 23 is provided on the rear surface 33 b of the joint portion 33 . Examples of the joining member 36 include a double-sided adhesive tape, a hook-and-loop fastener, and the like.

The larger the area of the rear surface 33b of the joint portion 33, the larger the area where the joint member 36 is provided. Further, it is preferable that the rear surface 33b of the joint portion 33 be a curved surface matching the curved shape of the connecting portion 23B of the decorative member 23. As shown in FIG. As a result, the rear surface 33b of the connecting member 30 and the front surface 23a of the decorative member 23 come into surface contact with each other and are joined without gaps, thereby increasing the joining force.

The connecting member 30 is preferably inserted into the engaged hole 27 before the decorative member 23 is attached to the backrest supporting member 22 .

(Mounting member)
In this embodiment, two mounting members 24 shown in FIG. 5 are arranged between the rear surface 22b of the backrest support member 22 and the front surface 23a of the decorative member 23 (FIG. 4). The mounting member 24 is arranged between the decorative member 23 and the backrest support member 22 at positions facing the side portions 23A, 23A of the decorative member 23 and the side portions 22A, 22A of the backrest support member 22, respectively. there is

As shown in FIG. 5, the mounting member 24 includes a rectangular flat portion 24A, a pair of first engaging protrusions (engaging portions) 16A, 16A, and a pair of second engaging protrusions (engaging portions). Joint portion) 16B, 16B.

As shown in FIG. 5, the attachment member 24 is attached to the rear surface 22b of the backrest support member 22 with the front surface 24c (FIG. 6) facing the rear surface 22b. As shown in FIG. 5, the backrest support member 22 has first engaging projections corresponding to the first engaging projections 16A, 16A and the second engaging projections 16B, 16B of the mounting member 24 described above. Concave portions 22J, 22J (engaged portions) and second engaging concave portions 22K, 22K (engaged portions) are formed. The second engaging protrusions 16B, 16B are inserted into and engaged with the first engaging recesses 22J, 22J of the backrest support member 22, and the second engaging protrusions 16B, 16B engage with the second engaging recesses 22K, 22K of the backrest support member 22. is inserted into and engaged with.

(Decorative member)
As shown in FIGS. 3 and 4, the decorative member 23 is arranged on the back surface 20b (FIG. 2) side of the backrest main body 20, and is provided on the backrest main body 20 with the front surface 23a facing the rear surface 20b. there is Specifically, the decorative member 23 is attached to the backrest supporting member 22 so as to partially cover the rear surface 22b (FIG. 5).

The decorative member 23, as shown in FIG. 2, has a pair of side portions 23A, 23A and a connecting portion 23B. A pair of side portions 23A, 23A spaced apart in the width direction (X direction) extend in the vertical direction (Z direction), and are connected at their upper ends by a connecting portion 23B extending in the width direction (X direction). ing. The decorative member 23 has a downwardly open shape due to the pair of side portions 23A, 23A and the connecting portion 23B. The pair of side portions 23A, 23A and the connecting portion 23B of the decorative member 23 face the pair of side portions 22A, 22A and the first connecting portion 22B of the backrest support member 22, respectively.

Since the decorative member 23 is attached so as to hide at least the region in which the cutout portion 22f is formed in the rear surface 22b (FIG. 5) of the backrest support member 22, the decorative member 23 is visible when the chair 1 is viewed from the back side. It is preferable that the cutout portion 22f of the backrest support member 22 is sized so that it does not protrude from the decorative member 23 when the backrest support member 22 is folded.

As shown in FIGS. 3 and 4, each side portion 23A (23A) of the decorative member 23 is curved at the lower end side following the bent shape of the side portion 22A of the backrest support member 22. As shown in FIG. Therefore, when the decorative member 23 is attached to the backrest support member 22, the pair of side portions 23A, 23A of the decorative member 23 enter below the side portions 22A, 22A of the backrest support member 22. As shown in FIG. As a result, the decorative member 23 can entirely cover the rear surface 22b of the backrest support member 22, so that the appearance of the back side of the chair 1 can be improved.

As shown in FIGS. 2 and 5, the decorative member 23 is attached to the backrest support member 22 via a pair of attachment members 24 provided on both sides of the backrest support member 22 in the width direction. there is The decorative member 23 is attached to the rear surfaces 24d, 24d of the pair of mounting members 24, 24 with the front surface 23a (FIG. 4) facing each other using a bonding means 25 such as a double-sided adhesive tape or hook-and-loop fastener. It is attached to each attachment member 24 . In this way, the side portions 23A, 23A on both sides in the width direction of the decorative member 23 are connected to the backrest support member 22 via the mounting members 24, 24. As shown in FIG.

Further, in the decorative member 23 of the present embodiment, the central portion of the connecting portion 23B extending in the width direction (X direction) is connected to the first connecting portion 22B of the backrest support member 22 via the connecting member 30. there is The decorative member 23 is bonded to the connection member 30 via a joint member 36 ( FIG. 5 ) provided on the rear surface 33 b of the joint portion 33 . In this manner, the widthwise central portion of the decorative member 23 is connected to the backrest supporting member 22 via the connecting member 30 .

The decorative member 23 of this embodiment is detachably attached to the attachment member 24 and the connection member 30 attached to the backrest support member 22 . That is, the decorative member 23 is detachably attached to the backrest support member 22 via the attachment member 24 and the connection member 30 . In this way, the decorative member 23 can be freely removed from the backrest support member 22, so that the decorative member 23 can be replaced as needed.

When removing the decorative member 23 from the backrest support member 22 , the connection member 30 engaged with the backrest support member 22 is pushed out from the backrest support member 22 . Specifically, of the connection member 30, the vicinity of the center of the pressing portion 32 exposed on the front surface 22a of the backrest support member 22 is moved toward the rear of the backrest 6, that is, in the detachment direction (-Y direction) of the connection member 30. ).

As a result, the pressing portion 32 is elastically deformed rearward (−Y direction) in a convex shape. 34 and the engaged portion 27A are released, allowing the connecting member 30 to move in the detachment direction (-Y direction). In addition, as the pressing portion 32 is deformed, the joint portion 33 elastically deforms in a convex shape toward the rear of the backrest 6, so that the decorative member 23 connected to the rear surface 33b of the joint portion 33 is supported by the backrest. It is pushed out in the direction away from the member 22 (-Y direction).

As a result, the gap 10 (FIG. 6) between the rear surface 22b of the backrest support member 22 and the front surface 23a of the decorative member 23 widens, and the operator inserts a finger or a tool into the widened gap to allow the backrest to move. The decorative member 23 is removed from the support member 22 (the pair of mounting members 24, 24). At this time, the connecting member 30 may be removed from the backrest support member 22 together with the decorative member 23, or only the decorative member 23 may be removed from the backrest support member 22 while the connecting member 30 is held in the backrest support member 22. 22 may be removed.

Thus, by replacing the decorative member 23, the appearance of the chair 1 can be easily changed. Since the impression of the appearance of the chair 1 changes depending on the design of the decorative member 23, the optimal design can be selected according to various uses by replacing the decorative member 23 with a different design as required. In this way, by providing the backrest 6 whose appearance design can be arranged and whose design is excellent, it is possible to provide the chair 1 suitable for a wide range of uses according to the desires of the seated person.

In this embodiment, in a state in which the decorative member 23 is attached to the backrest support member 22 via the pair of mounting members 24, 24, the central portion of the decorative member 23 is connected to the backrest support member 22 via the connection member 30. It is connected. Therefore, the connection member 30 can prevent the central portion of the decorative member 23 from floating.

Further, in the present embodiment, since the pressing portion 32 of the connecting member 30 is exposed in the space between the front surface 22a of the backrest support member 22 and the backrest surface member 29, when the cosmetic member 23 is removed, The decorative member 23 can be easily removed from the backrest support member 22 by pressing the pressing portion 32 of the connection member 30 from the front surface 22a side of the backrest support member 22 to elastically deform the joint portion 33. Since the connection member 30 in this embodiment has a loop shape in a plan view, it is likely to be elastically deformed in the pressing direction.

As described above, by elastically deforming the joint portion 33 of the connecting member 30 in a convex shape, the decorative member 23 joined to the joint portion 33 can be pushed out in a direction away from the backrest support member 22, and the decorative member The gap 10 between 23 and the backrest support member 22 can be widened. This makes it possible to easily remove the decorative member 23 from the backrest support member 22 .

Further, by further pressing the pressing portion 32, the engaged state between the engaged portion 27A of the backrest support member 22 and the engaging portion 34 of the connecting member 30 is completely released, and the rear of the connecting member 30 ( −Y direction), and the connecting member 30 can be removed together with the decorative member 23 . Along with the replacement of the decorative member 23, the joint member 36 that joins the connecting member 30 and the decorative member 23 can be replaced with a new one. As a result, the joining force of the joining member 36 can be maintained even after the decorative member 23 is replaced.

Further, while the connection member 30 is attached to the backrest support member 22, the engagement of the engagement surfaces 34V and 27V restricts the rearward movement (detachment direction: -Y direction). It is slightly movable in (+Y direction). A large forward movement of the connecting member 30 is restricted when the decorative member 23 joined to the rear surface 33 b of the joint portion 33 contacts the rear surface 22 b of the backrest support member 22 . In this way, by loosely restricting forward movement of the decorative member 23 with respect to the connecting member 30, dimensional errors in the connecting member 30 are alleviated, and the mounting interval of the decorative member 23 with respect to the backrest support member 22 is set. It becomes possible to regulate at the members 24 , 24 .

In addition, since the backrest surface member 29 is made of a mesh member, the exposed portion (the pressing portion 32) of the connecting member 30 is hidden, and the exposed portion can be confirmed by looking closely. Therefore, when the operator removes the decorative member 23, it is easy to confirm the position of the connecting member 30, which facilitates the work.

In addition, when the chair 1 is normally used, the exposed portion of the connection member 30 can be hidden by the backrest panel 29, so frequent access to the pressing portion 32 can be prevented. It is possible to prevent the engaging state with the engaging portion 27A from being unreasonably engaged.

Further, by making the pressing part 32 hidden by the backrest surface material 29, it is possible to prevent the pressing part 32 from being obscured from the outside and spoiling the appearance of the chair 1.例文帳に追加

Further, by inserting the connection member 30 into the engaged hole 27 provided in the backrest support member 22 and holding it in an engaged state, the portions other than the pressing portion 32 and the joint portion 33 are attached to the backrest support member 22 . It can be hidden, and the appearance of the backrest supporting member 22 can be improved.

In the backrest support member 22 of the present embodiment, the first connecting portion 22B is convexly curved rearward (-Y direction), and the front surface 22a of the first connecting portion 22B is separated from the backrest surface member 29. It is considered to be a shape. Therefore, the pressing portion 32 of the connecting member 30 can be pressed by inserting a hand into the space between the front surface 22 a of the backrest support member 22 and the backrest surface member 29 . Thereby, only the decorative member 23 can be easily removed without disassembling the backrest 6. - 特許庁

Also, when the seated person sits on the chair 1, the seated person's back does not hit the backrest supporting member 22 or the connection member 30 exposed at the front surface 22a through the backrest surface member 29. , becomes a comfortable chair 1.

Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to such examples. It is obvious that a person skilled in the art can conceive of various modifications or modifications within the scope of the technical idea described in the claims, and these are also within the technical scope of the present invention. be understood to belong to
For example, the backrest surface material 29 is not limited to the mesh-like member described above, and may be, for example, a cushion covered with a skin material.

For example, the shape of the connection member 30 is not limited to the shape described above. Further, as long as one of the connecting member 30 and the backrest support member 22 has an engaging portion and the other has an engaged portion, the engaging structure of these is not limited to the structure described above. may be a convex portion and the other may be a hole portion.

As another shape of the connecting member 30, for example, a slit 37 may be provided in the center of the pressing portion 32 as shown in FIG. The slit 37 penetrates the pressing portion 32 in the vertical direction (Z direction) and thickness direction (Y direction). The width W of the slit 37 in the width direction (X direction) is, as shown in FIG. In addition, it is preferable that the slit 37 has a width such that a part of the finger is not caught in the slit 37 when the pressure is stopped.
With this configuration, the pressing portion 32 can be easily deformed in the pressing direction, and the engagement with the backrest support member 22 can be released more easily.

DESCRIPTION OF SYMBOLS 1... Chair 10... Gap 16A... First engagement convex part (engagement part) 16B... Second engagement convex part (engagement part) 18... Auxiliary locking means 20... Backrest main body 20a front surface of backrest main body 20b rear surface of backrest main body 21 backrest surface forming portion 21b rear surface of backrest surface forming portion 22 backrest support member 22a front surface of backrest support member , 22b... rear surface of the backrest support member, 22A... side portion of the backrest support member, 22J... first engagement recess (first engaged portion), 22K... second engagement recess (second Engaged portion) 23 Decorative member 23A Side portion 23B Connecting portion 23a Front surface of decorative member 23b Rear surface of decorative member 23d Peripheral edge 24 Mounting member 24d Mounting member Rear surface 26 Gap forming member 27 Engaged hole (through hole) 27A Engaged portion 28 Backrest outer frame member (peripheral frame member) 29 Backrest surface material (surface material ), 29b... rear surface of backrest surface material 30... connection member 32... pressing portion 32a... front surface of pressing portion 33... joint portion 33b... rear surface 34... engagement portion K... space T... thickness

Claims (8)

a backrest body having a front surface supporting the back of a seated person;
a decorative member disposed on the rear surface side of the backrest main body and attached to the rear surface of the backrest main body with the front surface facing the rear surface;
a connection member disposed at least on the front side of the decorative member and connecting the decorative member and the backrest main body;
a face material that forms the front surface of the backrest body,
an engaging portion provided on one of the connection member and the backrest main body;
an engaged portion provided on the other of the connection member and the backrest main body;
The connecting member has a pressing portion exposed in a space between the rear surface side of the face member and the front surface side of the decorative member in a state where the engaging portion and the engaged portion are engaged with each other. have a
chair backrest. The connecting member has a joint to which the decorative member is removably joined,
2. The chair according to claim 1, wherein said joint portion elastically deforms convexly toward said decorative member when said pressing portion is pressed from said front surface side of said backrest body toward said rear surface side. backrest. 3. The chair backrest according to claim 1, wherein said connecting member has a loop shape in plan view. The backrest main body includes a backrest forming portion having the face member and an outer peripheral frame member on which the face member is mounted, and a backrest supporting member that supports the rear surface of the backrest forming portion,
When the engaged portion is provided on the backrest support member,
The engaged portion penetrates through a front surface facing the rear surface of the face member and a rear surface facing the decorative member of the backrest support member, and is capable of holding the connection member inside. having at least through holes,
A chair backrest according to any one of claims 1 to 3. The backrest support member has the front surface spaced apart from the rear surface of the facing.
A chair backrest according to claim 4. The front surface of the pressing portion held in the through hole and the front surface of the backrest support member are flush with each other,
A chair backrest according to claim 4 or 5. The face material is made of a mesh member,
A chair backrest according to any one of the preceding claims. A chair comprising a chair backrest according to any one of claims 1 to 7.

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