JP6641656B2 - Chair armrests, furniture parts - Google Patents

Description

  The present invention relates to an armrest of a chair and a furniture part.

  BACKGROUND ART Conventionally, an armrest of a chair includes an operation member that is linked to a functional portion of a chair body via an operation cable (for example, see Patent Literature 1). The armrest includes a support structure attached to the chair body to form an upwardly extending portion, and an armrest body supported by an upper end of the upwardly extending portion and extending in the front-rear direction.

JP 2014-083116 A

  By the way, the operation cable is inserted into the upper extending portion of the support structure along the extending direction of the upper extending portion, and after reaching the inside of the armrest main body from the cable insertion hole at the upper end of the upper extending portion, the operation cable is It is sharply bent along the extension direction. The upper end of the upwardly extending portion is closed by a plate member extending in the direction in which the armrest body extends, and a cable insertion hole is formed so as to penetrate the plate member in the vertical direction. The operation cable is bent in the direction in which the armrest body extends just above the cable insertion hole, and this bending increases the sliding resistance of the inner cable of the operation cable that slides in the outer tube. When each part of the armrest is enlarged to reduce the curvature of the operation cable (to make the curve gentle), it becomes difficult to make the armrest smart.

  The present invention has been made in view of the above technical problem, and has a support structure (a first structure) supporting an armrest body (a second structure) having a different extending direction, and supporting the armrest body. In the armrest (furniture part) of the chair, in which a predetermined functional portion is linked to the operation member via the operation cable, the sharpness of the operation cable in the connection portion between the support structure and the armrest body is suppressed while suppressing the increase in the size of the armrest. The purpose is to suppress bending.

  As a means for solving the above problems, the present invention provides a support structure having an upper extension portion attached to a chair main body and extending upward from the chair main body side in a first extension direction, and an upper end of the upper extension portion. An armrest body that is supported and extends in a second extension direction that intersects the first extension direction, an operation member that is supported by the armrest body, and that performs a prescribed operation by a user, and an operation that is performed on the operation member An operation cable for transmitting the operation cable to the upper extension portion side, and a connection portion that connects the upper extension portion and the armrest body is provided with a cable insertion portion through which the operation cable can be inserted, The cable insertion portion has a first opening that opens downward in the first extension direction below the upper end surface of the upper extension portion, and a first opening portion that opens in the second extension direction above the upper end surface. A second opening that opens toward one side, It is equipped to provide a chair armrest.

  According to this configuration, when the operation cable is routed over the upper extension portion and the armrest main body where the extension directions intersect with each other, the operation cable is likely to be bent at the connection portion between the upper extension portion and the armrest main body. However, the cable insertion portion of the connecting portion is opened below the upper end surface of the upper extension portion downward in the first extension direction, and the second extension direction above the upper end surface. When opening the operation cable routed along the first extension direction in the upper extension portion to the inside of the armrest body, since the second opening portion that opens toward one side is provided, By inserting the operation cable through the cable insertion portion, it is possible to guide the operation cable so that the bending of the operation cable becomes gentle, and it is possible to suppress an increase in the sliding resistance of the operation cable. In addition, since the cable insertion portion is provided at the connection portion between the support structure and the armrest main body having different extending directions, it is easy to secure the dimensions of the cable insertion portion in two directions, and the bending of the operation cable without increasing the size of the armrest. Can be moderated.

In the present invention, a fitting projection is provided at an upper end of the upper extending portion, which projects upward from the upper end surface, and is fitted into the armrest main body by being inserted from below, and below the fitting projection. , The first opening may be formed, and the second opening may be formed on a side surface along a direction in which the fitting protrusion is inserted into the armrest body.
In this case, since the cable insertion portion is provided from below the fitting protrusion inserted into the armrest main body to the side surface of the fitting protrusion so as to penetrate the fitting protrusion, the operation extending in the upward extension portion is performed. The cable can be guided naturally into the armrest body. Further, compared to a case where the operation cables are routed avoiding the fitting protrusions, the space for arranging the operation cables can be made compact and the armrest can be prevented from becoming large.

In the present invention, the fitting projection may be configured as a pivot that rotatably supports the armrest body with respect to the support structure.
In this case, since the operation cable is routed so as to pass through the pivot that allows the armrest body to be rotatable, the operation cable is routed more compactly than when the operation cable is routed avoiding the pivot. be able to. Further, when the armrest body is rotated, the amount of movement of the cable insertion portion in the rotation direction is reduced, so that the swing width of the operation cable can be suppressed and the stability of the cable routing can be increased.

  The present invention has a first structure having a first extension attached to a furniture main body and extending in a first extension direction from the furniture main body side; and a first structure supported by the first extension, A second structure extending in a second extending direction intersecting the direction, an operation member supported by the second structure and performing a prescribed operation by a user, and an operation performed on the operation member by the first operation member. An operation cable for transmitting to the extension portion side, and a connection portion that connects the first extension portion and the second structure is provided with a cable insertion portion through which the operation cable can be inserted, The cable insertion portion is a first opening that opens toward one side in the first extension direction on the first extension portion side from a boundary surface between the first extension portion and the second structure, A second opening that opens toward one side of the second extension direction on the second structure side relative to a boundary surface; And a, to provide a fixture part.

  According to this configuration, when the operation cable is routed across the first extension portion and the second structure where the extension directions intersect each other, the operation is performed at the connection portion between the first extension portion and the second structure. Although bending of the cable is likely to occur, the cable insertion portion of the connection portion is opened toward one side in the first extension direction on the first extension portion side from the boundary surface between the first extension portion and the second structure. And the second opening that opens toward one side in the second extension direction on the second structure side with respect to the boundary surface, so that the first extension in the first extension portion When the operation cable routed along the exit direction reaches the second structure, it is possible to guide the operation cable by gently bending the operation cable by inserting the operation cable into the cable insertion part. In addition, an increase in the sliding resistance of the operation cable can be suppressed. In addition, since the cable insertion portion is provided at the connecting portion of the first extension portion and the second structure having different extension directions, it is easy to secure the dimensions of the cable insertion portion in two directions, without increasing the size of the armrest. The bending of the operation cable can be made gentle.

  According to the present invention, the armrest body (second structure) having different extending directions is supported by the support structure (first structure), and the operation member supported by the armrest body has a predetermined operation cable via the operation cable. In the armrest (furniture part) of the chair in which the functional parts are linked, it is possible to suppress the sudden bending of the operation cable in the connecting portion between the support structure and the armrest body, while suppressing an increase in the size of the armrest.

It is the perspective view which looked at the chair in the embodiment of the present invention from the left side. It is the perspective view which looked at the said chair from the back. It is a perspective view of the armrest on the right side of the said chair. It is a top view which shows the movement of the said armrest, (a) shows the front-back movement of an armrest, (b) moves left and right of an armrest, (c) shows the mode of rotation of an armrest. It is a perspective view which shows the raising / lowering movement of the armrest on the left side of the said chair. It is a perspective view of the state where the cover member of the lower layer member of the above-mentioned armrest was removed. It is a side view which shows the effect | action of the inner draw-out length maintenance mechanism of the said armrest, (a) shows the front-back intermediate position of an armrest, (b) shows the forward movement position of an armrest, and (c) shows the rearward movement position of an armrest. It is a perspective view of the upper end part of the raising / lowering cylinder of the said armrest. It is a perspective view from the back of the upper end part of the said raising / lowering cylinder. It is a perspective view from the front of the upper end part of the said raising / lowering cylinder. FIG. 11 is a perspective view of FIG. 10 without an end plate. It is the cross section orthogonal to the left-right direction which cut | disconnected the said armrest in the left-right direction intermediate part. It is sectional drawing orthogonal to the front-back direction which cut | disconnected the said armrest centering on a pivot. It is a disassembled side view of the raising / lowering mechanism of the said armrest. It is sectional drawing orthogonal to the left-right direction which cut | disconnected the said armrest centering on a pivot. It is sectional drawing orthogonal to the axis C1 which cut | disconnected the said armrest in the center of the locking pin of the operation lever.

Hereinafter, a chair according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the chair 100 includes a leg 1 installed on the floor F, a box-shaped support 2 installed on the upper portion of the leg 1, and A seat receiving member 3 attached thereto, a seat body 4 slidably supported by the seat receiving member 3 and seated by a seated person, and a backrest 7 extending from the support base 2 and supporting the back of the seated person seated on the seat body 4. And a pair of left and right armrests 8 disposed on the left and right sides of the seat 4.

  In the following description, for convenience, the direction in which the occupant seated on the seat body 4 faces forward is referred to as “front”, and the opposite direction is referred to as “back”. A direction (vertical direction) connecting the floor F side on which the chair 100 is installed and the opposite side is referred to as a “vertical direction”. Further, the width direction of the chair 100, that is, the horizontal direction orthogonal to the front-rear direction and the vertical direction is referred to as “left-right direction”. In the figure, the front is indicated by an arrow FR, the upper part is indicated by an arrow UP, and the left is indicated by an arrow LH.

  The leg 1 has a multi-leg 11 with a caster 11A, and a pillar 12 that stands up from the center of the multi-leg 11 and has a built-in gas spring (not shown) as an elevating mechanism. The outer cylinder 13 constituting the lower part of the pillar 12 is non-rotatably fitted to and supported by the multi-leg 11. The inner cylinder 14 that forms the upper part of the pillar 12 has the support base 2 fixed and supported at the upper end, and the lower part is supported by the outer cylinder 13 so as to be rotatable in the horizontal direction.

  The support base 2 incorporates an elevating and lowering adjusting mechanism of the pillar 12 and a tilt adjusting mechanism of the backrest 7. The seat receiving member 3 has four link arms (not shown) attached to the upper part of the support base 2 and a pair of left and right fixed frames (not shown) connecting the link arms.

  The seat body 4 has a seat frame 40 and an upholstery member 60 stretched over the seat frame 40. The upper surface of the upholstery 60 is a load supporting surface 60U that receives the load of the occupant.

  The backrest 7 has a back frame 70 and an upholstery 90 stretched over the back frame 70. The front surface of the upholstery 90 is a load supporting surface 90F that receives a load of the occupant. The back frame 70 has a back frame 70B connected to the support base 2 and a back frame 80F provided in front of the back frame 70B.

  The back frame 70B has a pair of left and right lower sides 71 and side sides 72, and an upper side 73. The back frame 70B is integrally formed of, for example, a metal such as aluminum or a resin having a predetermined strength.

  The lower left and right sides 71 are connected to a tilt adjustment mechanism in the support base 2 and extend from both left and right sides of a rear portion of the support base 2. The left and right lower sides 71 are gradually inclined rearward as going upward. Left and right armrests 8 are supported on lower left and right sides 71, respectively.

  Left and right side portions 72 are connected to upper ends of the left and right lower side portions 71, respectively. The left and right side portions 72 are gradually inclined outward in the left-right direction as going upward. The lower portions of the left and right side portions 72 are gradually inclined forward as going upward. The upper portions of the left and right side portions 72 are gradually inclined rearward as going upward. The upper ends of the left and right side parts 72 are connected to each other by an upper part 73.

  The front frame 80F includes an upper arm portion 81 connected to an upper portion of the side portion 72 of the rear frame 70B, a lower arm portion 82 connected to a lower portion of the side portion 72, and a left-right direction (load support surface 90F). A pair of vertical rods 86 arranged apart from each other), an upper rod 87 connecting upper ends of the pair of vertical rods 86, and a lower end connecting part 89 connecting lower ends of the pair of vertical rods 86, have. The front frame 80F is integrally formed of, for example, resin. The left and right vertical bars 86 and the upper bar 87 are configured to be elastically deformable in response to the force acting from the upholstery material 90.

  The left and right vertical rods 86 are connected to the rear frame 70B via the upper arm 81 at the upper part, and are connected to the rear frame 70B via the lower arm 82 at the lower part. The left and right vertical bars 86 are gradually inclined inward in the left-right direction as they go downward. The lower ends of the left and right vertical bars 86 are connected to each other via a U-shaped lower end connecting portion 89.

  The left and right armrests 8 are provided in a symmetrical shape separated from each other in the width direction (left and right direction) of the chair 100. In the following description, unless otherwise specified, the armrest 8 installed on the right side of the chair 100 will be described with reference to the drawings, and the armrest 8 arranged on the left side of the chair 100 will have a symmetrical configuration. The detailed description is omitted. In the chair 100, a chair main body is configured including a leg 1, a support 2, a seat receiving member 3, a seat 4, and a backrest 7.

  Referring also to FIG. 3, the armrest 8 includes an L-shaped support rod 8a (a support structure) that extends outward from the lower side 71 of the back frame 70 in the width direction and then curves upward and extends in a front view. An armrest body 8b supported by the upper end of the rod 8a and extending in the front-rear direction.

  Referring to FIGS. 14 and 15 together, the support rod 8a extends outward from the lower side 71 of the back frame 70 in the width direction, and curves upward at the outside in the width direction of the outer extension 8a1. An upper bending portion 8a2 and an upper extending portion 8a3 connected above the upper bending portion 8a2 are provided.

  The outer extending portion 8a1 and the upper curved portion 8a2 are integrally formed as a solid lower support rod made of, for example, an aluminum alloy. The outer extension 8a1 extends from the lower edge 71 of the back frame 70 substantially horizontally to the outside in the width direction (specifically, curved so as to be slightly upward toward the outside in the width direction). The upward curved portion 8a2 is slightly inclined forward and curved upward.

  The upper extending portion 8a3 is formed in a pipe shape extending linearly in the vertical direction as a hollow upper supporting rod made of, for example, a steel plate. The upper extending portion 8a3 extends upward along the vertical direction (specifically, slightly inclined forward like the upper curved portion 8a2). The upward extension 8a3 extends along the vertical direction when viewed in the front-rear direction. A middle line C1 in FIG. 15 indicates a central axis along the extending direction (first extending direction) of the upper extending portion 8a3. Hereinafter, the direction along the axis C1 may be referred to as the axis C1 direction.

The upwardly extending portion 8a3 is fitted with an elevating cylinder 8c that can move up and down along the axis C1 direction, and has an inner pipe 8d that can move up and down along the axis C1 direction.
As shown in FIG. 5, the lifting cylinder 8c and the inner pipe 8d can be raised and lowered integrally with the armrest body 8b.
As shown in FIG. 4, the armrest main body 8b is movable in the front-rear direction with respect to the support rod 8a (the elevating cylinder 8c) (see FIG. 4A), and is viewed in plan at the center of a pivot 8i1 described later. (See FIG. 4 (c)), and an upper layer member 8k described later can be moved in the left-right direction with respect to the lower layer member 8j and the support rod 8a (see FIG. 4 (b)).

  As shown in FIGS. 14 to 16, an inner sleeve 8e in which a comb-shaped height adjustment slit 8e1 is formed is fitted in the upper extension 8a3. The inner sleeve 8e is fixed to the upper extension 8a3 by being fitted into the upper extension 8a3 and prevented from coming off by screws or the like. The height adjusting slit 8e1 has an elevating guide slit 8e2 extending in the direction of the axis C1, and a plurality of locking slits 8e3 extending substantially perpendicularly forward from the elevating guide slit 8e2.

  The inner pipe 8d holds a locking pin 8f1 that can be locked to any of the locking slits 8e3 of the height adjustment slit 8e1. The locking pin 8f1 extends in the left-right direction, and its left and right sides are inserted into the pin moving holes 8d1 on the left and right side walls of the inner pipe 8d. The pin moving hole 8d1 is formed in a long hole shape extending in the front-rear direction along the locking slit 8e3 in a side view. The left and right ends of the locking pin 8f1 are inserted into the left and right pin moving holes 8d1 so as to be movable in the front-rear direction.

When the locking pin 8f1 moves to the front end of the pin moving hole 8d1, the locking pin 8f1 is locked by one of the locking slits 8e3 of the height adjustment slit 8e1, and locks the elevation of the armrest body 8b. That is, the fixing height of the armrest main body 8b can be adjusted in multiple steps by locking the locking pin 8f1 to which locking slit 8e3.
When the locking pin 8f1 moves to the rear end of the pin moving hole 8d1, the locking pin 8f1 releases the locking to the locking slit 8e3, reaches the lifting guide slit 8e2, and releases the lifting lock of the armrest body 8b. Thereby, the armrest body 8b can be moved up and down (the height can be changed).

  The support rod 8a includes an upper extension 8a3, an elevating cylinder 8c, an inner pipe 8d, an inner sleeve 8e and a locking pin 8f1, and a swing lever 8f and an elevating operation lever 8h described later. An elevating mechanism 8L whose height can be adjusted is configured.

  A swing lever 8f is swingably supported in the inner pipe 8d via a support shaft 8f2 extending in the left-right direction. The swing lever 8f includes an upper extension 8f3 extending above the support shaft 8f2, and a lower extension 8f4 extending below the support shaft 8f2. At the upper end of the upper extension 8f3, an engagement pin 8f5 is provided to slidably engage the rear lower engagement groove 8h4 of the lifting operation lever 8h. A pin holding portion 8f6 for holding the locking pin 8f1 is provided at the lower end of the downward extension 8f4. Below the pin holding portion 8f6, an extending portion 8f7 extending downward is provided, and a spring piece 8f8 is provided which is folded upward from the rear side of the lower end portion of the extending portion 8f7 upward in a side view arc.

  At the upper end of the inner pipe 8d, a top plate 8g projecting around the inner pipe 8d in a plan view is fixed. A lifting operation lever 8h is swingably supported below the top plate 8g and in front of the inner pipe 8d via a support shaft 8h1 extending in the left-right direction. The lifting operation lever 8h includes a front extension 8h2 extending forward of the support shaft 8h1, and a rear extension 8h3 extending rear of the support shaft 8h1. An operation portion 8h5 is provided below the front extension portion 8h2 so as to protrude outward (below the front) from the upper end portion of the elevating cylinder 8c and allow the user to perform an upward pushing operation. A lower rear engagement groove 8h4 that opens downward is provided below the rear end of the rear extension 8h3, and engages an engagement pin 8f5 at the upper end of the swing lever 8f.

The swing lever 8f is urged by a spring piece 8f8 to move the lower end (pin holding portion 8f6) forward.
Here, the inner pipe 8d has an elliptical cross section that is long in the front-rear direction. An operation cable 9 is inserted into the rear inside of the inner pipe 8d so as to pass through the inside of the concave rear inner wall 8d2.
The spring piece 8f8 has its rear upper end 8f9 folded upward and supported from the rear with a biasing reaction force applied to the rear inner wall 8d2 of the inner pipe 8d with the operation cable 9 interposed therebetween.

  The rear upper end 8f9 of the spring piece 8f8 is formed in a straight line along the left-right direction. The operation cable 9 is held between the rear upper end 8f9 of the spring piece 8f8 and the rear inner wall 8d2 of the inner pipe 8d by utilizing the biasing reaction force of the spring piece 8f8. Note that there may be a configuration in which the inner pipe 8d supports the rear upper end 8f9 of the spring piece 8f8 to reduce the urging reaction force applied to the operation cable 9.

The swing lever 8f moves the lower end portion forward by the spring piece 8f8, thereby moving the locking pin 8f1 to the front end of the pin moving hole 8d1, and moving the locking pin 8f1 to one of the locking slits 8e3 of the height adjustment slit 8e1. Lock. As a result, the elevation of the armrest body 8b is locked.
At this time, the swing lever 8f moves the engagement pin 8f5 rearward together with the upper end. By the movement of the engagement pin 8f5, the lifting operation lever 8h swings so as to move the rear extension 8h3 upward, so that the operation portion 8h5 projects forward and downward from the upper end of the lifting cylinder 8c.

  When the operation portion 8h5 protruding outside the elevating cylinder 8c is pushed upward, the rear extension 8h3 of the elevating operation lever 8h moves the engaging pin 8f5 forward. Due to the swing of the swing lever 8f accompanying this movement, the lower end of the swing lever 8f moves rearward against the urging force of the spring piece 8f8, and the locking pin 8f1 moves to the rear end of the pin moving hole 8d1. Let it. Thus, the locking pin 8f1 releases the locking of the height adjustment slit 8e1 to the locking slit 8e3, and the locking pin 8f1 reaches the elevating guide slit 8e2, whereby the elevating lock of the armrest body 8b is released.

  As shown in FIGS. 10, 11, and 15, an end plate 8i having a pivot 8i1 is fixed on a top plate 8g of the inner pipe 8d. The top plate 8g and the end plate 8i are disposed so as to close the upper end opening of the elevating cylinder 8c. The end plate 8i forms an upper end surface 8i2 of the elevating cylinder 8c and thus the support rod 8a. An armrest body 8b is supported on the end plate 8i so as to be rotatable about a pivot 8i1. The upper end surface 8i2 is a boundary surface between the elevating cylinder 8c (the upwardly extending portion 8a3) and the armrest body 8b.

  The line C2 in the figure indicates the central axis of the pivot 8i1. The upper end face 8i2 is formed substantially horizontally. More specifically, the upper end face 8i2 is formed in a curved shape slightly convex downward in a side view with respect to a horizontal plane so as to match the lower face of the base member 8m of the lower layer member 8j of the armrest body 8b. The direction along the upper end face 8i2 in the side view is the front-back movement direction (first movement direction) of the armrest body 8b. The forward / backward moving direction is also the extending direction (second extending direction) of the armrest body 8b. The armrest main body 8b extends substantially in the front-back direction (second extension direction). A line C3 in the drawing indicates a reference axis along the front-back movement direction (second extension direction) of the armrest body 8b in a side view. A direction along the axis C3 may be referred to as an axis C3 direction.

  As shown in FIGS. 3, 6, 12, and 13, the armrest body 8b includes a lower member 8j mounted on the end plate 8i and an upper member 8k mounted on the lower member 8j. Have.

  The lower layer member 8j forms a housing space K1 that opens upward, and has a base member 8m placed on the end plate 8i with the pivot 8i1 protruding into the housing space K1, and a base member in the housing space K1. A rotation member 8n that is fitted to the shaft 8i so as to be relatively non-rotatable and movable back and forth and rotatably fitted to the pivot 8i1, and a device (support for raising and lowering the pillar 12) in the support base 2 via the operation cable 9. Operating lever 8p for remotely operating the mechanism and the tilt adjusting mechanism of the backrest 7), a front pulley (first folding member, pulley) 8q and a rear, for winding the inner cable 9b of the operating cable 9 in the lower layer member 8j. A pulley (second folded member, pulley) 8r and a cover member 8s for closing the upper opening of the accommodation space K1 are provided.

  The base member 8m (and the cover member 8s) is configured as a movable body that supports the operation lever 8p and is movable in the front-rear direction with respect to the support rod 8a. At the front end of the base member 8m, a front step portion 8m1 that changes stepwise upward with respect to the housing space K1 to support the front portion of the upper layer member 8k is formed. The base member 8m has a rear inclined portion 8m2 that is inclined rearward and downward to support the rear portion of the upper layer member 8k at the rear end. The rear inclined portion 8m2 is formed so that the depth of the rear end portion of the accommodation space K1 becomes shallower toward the rear side. A long hole 8m3 is formed in the bottom wall of the base member 8m so as to extend in the front-rear direction and penetrate the pivot 8i1 so as to be movable back and forth.

  The rotating member 8n is connected to the pivot 8i1 of the support rod 8a, and is configured as a fixed body that cannot move in the front-rear direction with respect to the support rod 8a. The rotating member 8n is formed in a flat rectangular parallelepiped shape in which the width in the vertical direction (the direction along the axis C2 of the pivot 8i1) is suppressed. The rotating member 8n is arranged so that the front and rear surfaces extend in the left-right direction and the left and right sides extend in the front-rear direction (direction along the left and right side walls of the base member 8m) in plan view. A connecting portion 8i3 that connects the upwardly extending portion 8a3 and the armrest body 8b includes the rotating member 8n and the end plate 8i.

  The operation lever 8p is formed in an L shape in side view. The operation lever 8p includes a support shaft 8p1 extending along the left-right direction and rotatably supported on the front step 8m1, a lower extension 8p2 extending downward from the support shaft 8p1, and a lower extension 8p2. A front extension 8p3 extending forward from the lower end. The operation lever 8p is swingable about the support shaft 8p1 in a swing space in the front step 8m1. The front part of the front extension part 8p3 is an operation part 8p4 that projects forward and downward under the front step part 8m1. The operation section 8p4 is located below the front part of the upper layer member 8k, and is operable to be pulled up by a fingertip of a user's arm placed on the upper layer member 8k.

  As shown in FIG. 6, FIG. 7, and FIG. 12, a front pulley 8q is rotatably supported at the lower end of the downward extension 8p2 of the operation lever 8p via a support shaft 8q1 extending in the left-right direction. The front pulley 8q moves forward and upward with the rotation of the lower extension 8p2 when the lower extension 8p2 rotates upward by the lifting operation of the operation unit 8p4.

  The rear pulley 8r is rotatably supported by the rear end of the bottom wall of the base member 8m via a support shaft 8r1 extending along the vertical direction. The rear pulley 8r is disposed at the rear end of the housing space K1 whose depth is reduced by the rear inclined portion 8m2. The rear pulley 8r is arranged in a falling posture in which the radial direction is substantially horizontal, as compared with a case where the rear pulley 8r is arranged in an upright posture in which the radial direction is substantially vertical like the front pulley 8q, so that even in a shallow space. It is easier to place.

  The operation cable 9 includes an outer cable 9a and an inner cable 9b. The operation cable 9 extends from the support base 2 through the inner pipe 8d and reaches the lower layer member 8j. Referring also to FIG. 9, the outer cable 9a of the operation cable 9 is configured such that a tip end (locking end 9a1) reaching the inside of the lower layer member 8j is connected to an outer locking portion 8n1 formed in the rotating member 8n. Lock.

  After the inner cable 9b of the operation cable 9 extends forward from the locking end 9a1 of the outer cable 9a, it is wound around the front pulley 8q from below upward and folded back. Thereafter, the inner cable 9b is wound around the rear pulley 8r from one side in the width direction to the other side (in the present embodiment, from the inside to the outside in the width direction) and is folded forward. After that, the inner cable 9b locks the distal end portion (locking end portion 9b1) of the inner cable 9b to an inner locking portion 8n2 formed outside the rear end of the rotating member 8n in the width direction.

  When the operating portion 8p4 of the operating lever 8p is pulled up in the above configuration, the front pulley 8q moves upward and forward, pulls out the inner cable 9b, and operates the device in the support base 2.

  Here, the front pulley 8q also moves in the front-rear direction when the armrest main body 8b is moved in the front-rear direction. At this time, the front pulley 8q moves forward and backward ahead of the locking end 9a1 of the outer cable 9a. Accordingly, the rear pulley 8r moves back and forth behind the locking end 9b1 of the inner cable 9b.

  Thus, even if the length of the inner cable 9b in front of the locking end 9a1 of the outer cable 9a increases or decreases, the length of the inner cable 9b behind the locking end 9b1 of the inner cable 9b is the same. Only increase or decrease. Therefore, a change in the length of the drawn out inner cable 9b is suppressed, and the inner cable 9b is prevented from being pulled during the forward movement of the armrest body 8b, and the inner cable 9b is prevented from being loosened during the backward movement of the armrest body 8b.

  In other words, an inner draw-out length maintaining mechanism 8X including the front and rear pulleys 8q and 8r is formed on the base member 8m that is the moving body. The inner drawer length maintaining mechanism 8X suppresses a change in the drawer length of the inner cable 9b from the outer cable 9a by changing the route of the inner cable 9b when the armrest body 8b moves back and forth.

  The inner cable 9b is wound around the front pulley 8q in front of the locking end 9a1 of the outer cable 9a, and extends along the front-rear direction and is folded back so as to be convex forward. The inner cable 9b is routed vertically above and below the locking end 9a1 of the outer cable 9a and behind the front pulley.

  The inner cable 9b is wound around the rear pulley 8r behind the locking end 9b1 of the inner cable 9b, so that it extends along the front-rear direction and is folded back so as to be convex rearward. The inner cable 9b is arranged so as to be arranged left and right behind the locking end 9b1 of the inner cable 9b and forward of the rear pulley 8r.

  As shown in FIG. 3, FIG. 6, and FIG. 12, the cover member 8s has a front step cover portion 8s1 formed in a step shape so as to be aligned with the front step portion 8m1, and an inclined portion aligned with the rear inclined portion 8m2. And a rear inclined cover portion 8s2 extending to the front of the rear inclined portion 8m2, and an intermediate wall portion 8s3 provided between the front step cover portion 8s1 and the rear inclined cover portion 8s2 so as to be separated from the upper layer member 8k. I have. The front step cover portion 8s1 rises upward from the front end of the intermediate wall portion 8s3, and the rear inclined cover portion 8s2 rises relatively low and gently upward from the rear end of the intermediate wall portion 8s3.

  A penetration space S is formed between the intermediate wall portion 8s3 and the upper layer member 8k so as to penetrate the armrest body 8b in the left-right direction. A front support portion 8t1 formed by the front step portion 8m1 and the front step cover portion 8s1 and supporting the front portion of the upper layer member 8k is provided in front of the through space S. Behind the through space S, there is provided a rear support portion 8t2 formed by the rear inclined portion 8m2 and the rear inclined cover portion 8s2 and supporting the rear portion of the upper layer member 8k.

  As shown in FIGS. 12 and 13, the upper layer member 8k includes a base member 8k1 fixed on the front and rear support portions 8t1 and 8t2 of the lower layer member 8j, and a cover member 8k2 that overlaps the base member 8k1 with an accommodation space K2. And a pad member 8k3 that covers the cover member 8k2 from above, and a cushion member 8k4 made of urethane or the like inserted between the cover member 8k2 and the pad member 8k3. The upper layer member 8k has a gently curved shape that is upwardly convex when viewed from the side, and has a front portion inclined forward and downward and a rear portion inclined backward and downward.

The accommodation space K2 of the upper layer member 8k is provided with a movement equalizing mechanism 8u for moving the upper layer member 8k, which is long in the front and rear directions, left and right in parallel.
The movement equalizing mechanism 8u includes an interlocking shaft 8u1 extending in the front-rear direction in the accommodation space K2 of the upper layer member 8k, a front rack gear 8u2 and a rear rack gear 8u3 extending in the left and right direction on the base member 8k1, and an interlocking shaft 8u1. And a rear bearing portion 8u5 disposed on the rear side of the interlocking shaft 8u1.

  The front end of the interlocking shaft 8u1 is rotatably supported by the front bearing 8u4 in the upper layer member 8k. The rear end of the interlocking shaft 8u1 is rotatably supported by a rear bearing 8u5 in the upper layer member 8k. A front pinion gear 8u6 is formed at the front of the interlocking shaft 8u1. A rear pinion gear 8u7 is formed at the rear of the interlocking shaft 8u1. The front rack gear 8u2 is meshed with the front pinion gear 8u6. A rear rack gear 8u3 is meshed with the rear pinion gear 8u7. The front bearing portion 8u4 and the rear bearing portion 8u5 are fixed to the lower layer member 8j, and move relative to the upper layer member 8k when the upper layer member 8k moves left and right.

  The front end of the front bearing 8u4 is provided with a guide projection 8v1 whose tip is directed downward. On the front upper surface of the base member 8k1, a guide groove 8v2 formed along the left-right direction (the moving direction of the upper layer member 8k) is provided. The guide projection 8v1 is slidably engaged with the guide groove 8v2. The guide projection 8v1 and the guide groove 8v2 form a front guide 8v for guiding the left and right movement of the front part of the upper layer member 8k.

  The rear end of the rear bearing 8u5 is provided with a guide projection 8w1 whose tip is directed downward. On the rear upper surface of the base member 8k1, a guide groove 8w2 formed along the left-right direction (the moving direction of the upper layer member 8k) is provided. The guide projection 8w1 is slidably engaged with the guide groove 8w2. The guide projection 8w1 and the guide groove 8w2 form a rear guide 8w that guides the left and right movement of the rear part of the upper layer member 8k.

  In the above configuration, when the user grips the front end or the rear end of the upper layer member 8k and tries to move the upper layer member 8k left and right, the side (drive side) of the front and rear ends of the upper layer member 8k that is gripped by the user. The rack gear at the end of () moves left and right, and rotates the interlocking shaft 8u1 via a pinion gear meshing with the rack gear. Then, the end on the opposite side (driven side) of the upper layer member 8k separated by the length of the interlocking shaft 8u1 is moved right and left by the pinion gear and the rack gear on the opposite end by the same amount as the end on the drive side. .

  When the upper layer member 8k which is long in the front and rear direction is moved in the left and right direction, an operation performed by gripping any one of the front and rear ends of the upper layer member 8k causes the upper layer member 8k to be inclined in a plan view, thereby preventing smooth left and right movement. In some cases, the armrest body 8b may unintentionally rotate around the pivot 8i1. On the other hand, by equalizing the left and right movement of the front and rear ends of the upper member 8k by the movement equalizing mechanism 8u, the horizontal movement of the upper member 8k is promoted.

  As shown in FIGS. 6 and 15, a connecting portion 8i3 connecting the upper extension 8a3 and the armrest body 8b is provided with a cable insertion portion 8i4 through which the operation cable 9 can be inserted. The cable insertion portion 8i4 is a first opening that opens downward below the upper end surface 8i2 of the upper extension 8a3 in the direction in which the upper extension 8a3 extends (the direction of the axis C1, the first extension direction). 8i5, and a second opening 8i6 that opens above the upper end surface 8i2 in the extending direction (the direction of the axis C3, the second extending direction) of the armrest body 8b.

  8, 10 and 11, the cable insertion portion 8i4 forms a first opening 8i5 below the pivot 8i1 and a second opening 8i6 at the front end of the outer peripheral surface of the pivot 8i1. are doing. An intermediate opening 8i7 having a rectangular shape in a plan view is formed on the lower surface of the end plate 8i. In the top plate 8g overlapping below the end plate 8i, a lower opening 8i8 having a rectangular shape in a plan view is formed so as to be shifted rearward with respect to the intermediate opening 8i7. The rear part of the intermediate opening part 8i7 and the front part of the lower opening part 8i8 overlap each other in the vertical direction, and this overlapping part forms a first opening part 8i5 that communicates with each other in the vertical direction.

  The cable insertion portion 8i4 forms an inclined surface 8i9 that is inclined forward and upward from the first opening 8i5 (the intermediate opening 8i7) toward the second opening 8i6 in a side view. The cable insertion portion 8i4 is formed so as to obliquely penetrate (cut out) the pivot 8i1 (end plate 8i) along the inclined surface 8i9.

  The inclined surface 8i9 is inclined so as to form an equal obtuse angle to the direction of the axis C1 and the direction of the axis C3. Accordingly, when the operation cable 9 is routed over the upper extension portion 8a3 and the armrest body 8b whose extension directions intersect each other, the operation cable 9 is gently bent along the inclined surface 8i9 and guided. Is done.

  Immediately in front of the second opening 8i6, a front guide surface 8n3 is formed in the rotating member 8n so as to extend so as to extend the inclined surface 8i9 and curve so that the front portion is substantially horizontal. Thereby, the bending when the operation cable 9 reaches the front of the cable insertion portion 8i4 is also gently guided.

  The outer locking portion 8n1 of the rotating member 8n holds the locking end portion 9a1 of the outer cable 9a inclined downward to the front so as to pull out the inner cable 9b toward the lower end height of the front pulley 8q. . Therefore, the effect of bending the operation cable 9 downward in front of the second opening 8i6 is significant.

  When the operation cable 9 reaches below the cable insertion portion 8i4, the operation cable 9 comes into contact with the rear extension 8h3 of the lifting operation lever 8h from above and behind to form a convex upward and rearward curved portion, and then the upper extension 8a3. Of the armrest body 8b in the direction of the axis C3. Thereafter, the operation cable 9 curves downward and is routed along the rear inner wall 8d2 of the inner pipe 8d.

  As described above, the armrest 8 of the chair 100 in the present embodiment is attached to the chair body and has the upper extension 8a3 extending upward from the chair body side in the first extension direction (the direction of the axis C1). A rod 8a, an armrest body 8b supported by the upper end of the upper extension 8a3, and extending in a second extension direction (the direction of the axis C3) intersecting with the first extension direction, and supported by the armrest body 8b; An operation lever 8p for performing a specified operation by a user, and an operation cable 9 for transmitting the operation performed on the operation lever 8p to the upper extension 8a3 side, the upper extension 8a3 and the armrest The connecting portion 8i3 connecting the main body 8b is provided with a cable insertion portion 8n4 through which the operation cable 9 can be inserted, and the cable insertion portion 8n4 is provided at an upper end surface 8i of the upper extension 8a3. A first opening 8n5 that opens downward below the first extension direction and a second opening that opens above the upper end surface 8i2 toward one side of the second extension direction. 8n6.

  According to this configuration, when the operation cable 9 is routed over the upper extension portion 8a3 and the armrest body 8b whose extension directions intersect each other, the operation is performed at the connecting portion 8i3 of the upper extension portion 8a3 and the armrest body 8b. Although the cable 9 is likely to bend, the cable insertion portion 8n4 of the connecting portion 8i3 has a first opening 8n5 that opens downward below the upper end surface 8i2 of the upper extension 8a3 in the first extension direction. And a second opening 8n6 that opens above the upper end surface 8i2 toward one side in the second extending direction, so that the second opening 8n6 extends along the first extending direction within the upper extending portion 8a3. When the routed operation cable 9 is led into the armrest body 8b, the operation cable 9 is inserted into the cable insertion portion 8n4 to guide the operation cable 9 to bend smoothly. cave It is possible to suppress the increase of the sliding resistance of 9. Further, since the cable insertion portion 8n4 is provided in the connecting portion 8i3 of the support rod 8a and the armrest main body 8b having different extending directions, it is easy to secure the dimensions of the cable insertion portion 8n4 in two directions, without increasing the size of the armrest. The bending of the operation cable 9 can be made gentle.

At the upper end of the upper extension 8a3, there is provided a pivot 8i1 that protrudes upward from the upper end surface 8i2 and that is inserted into the armrest main body 8b from below and fitted therein. Below the pivot 8i1, The first opening 8n5 is formed, and the second opening 8n6 is formed on a side surface along a direction in which the pivot 8i1 is inserted into the armrest body 8b.
According to this configuration, the cable insertion portion 8n4 is provided from below the pivot 8i1 inserted into the armrest main body 8b to the side surface of the pivot 8i1 so as to pass through the pivot 8i1, and thus extends inside the upward extension 8a3. The operation cable 9 can be naturally guided into the armrest body 8b. Further, compared to a case where the operation cable 9 is routed avoiding the pivot 8i1, the space for arranging the operation cable 9 can be made compact, and the armrest can be prevented from becoming large.

The pivot 8i1 supports the armrest body 8b so as to be rotatable with respect to the support rod 8a.
According to this configuration, since the operation cable 9 is routed so as to penetrate the pivot that enables the armrest main body 8b to rotate, the operation cable 9 is arranged in comparison with the case where the operation cable 9 is routed avoiding the pivot. 9 can be arranged compactly. Further, when the armrest body 8b rotates, the amount of movement of the cable insertion portion 8n4 in the rotation direction decreases, so that the swing width of the operation cable 9 can be suppressed and the stability of the cable routing can be improved.

The present invention is not limited to the above-described embodiment.For example, the configuration of the present embodiment is not limited to the armrest of the chair, and may be, for example, various movable parts or the like, attached to the furniture main body, and moved from the furniture main body side to the second. A first structure having a first extension that extends in one extension direction, and a second structure that is supported by the first extension and extends in a second extension direction that intersects the first extension direction. Another fixture provided with an operation member supported by the second structure and performing a specified operation by a user, and an operation cable for transmitting the operation performed on the operation member to the first extension portion side. It may be applied to parts.
In addition to being applicable to fixtures other than chairs, various changes can be made without departing from the gist of the present invention.

100 chairs (furniture)
8 Armrest 8a Supporting rod (supporting structure)
8a3 Upper extension 8b Armrest body 8i1 Axis (fitting projection)
8i2 Upper end surface 8i3 Connecting portion 8n4 Cable insertion portion 8n5 First opening 8n6 Second opening 8p Operation lever (operation member)
9 Operation cable

Claims (4)

A support structure attached to the chair body and having an upwardly extending portion extending upward from the chair body side in the first extending direction;
An armrest body supported at an upper end of the upper extension and extending in a second extension direction intersecting with the first extension direction;
An operation member supported by the armrest main body and performing a prescribed operation by a user;
An operation cable for transmitting an operation performed on the operation member to the upwardly extending portion side,
A connecting portion that connects the upper extension portion and the armrest main body is provided with a cable insertion portion through which the operation cable can be inserted,
The cable insertion portion has a first opening that opens downward in the first extension direction below an upper end surface of the upper extension portion, and a second opening direction that opens above the upper end surface. A second opening that opens towards one side of the chair. At the upper end of the upper extension portion, a fitting projection is provided which projects upward from the upper end surface and is inserted into the armrest body from below and fitted therein,
The first opening is formed below the fitting protrusion, and the second opening is formed on a side surface along a direction in which the fitting protrusion is inserted into the armrest body. Item 2. An armrest of the chair according to item 1.   The armrest of the chair according to claim 2, wherein the fitting protrusion is a pivot that rotatably supports the armrest body with respect to the support structure. A first structure having a first extension portion attached to the furniture body and extending in a first extension direction from the furniture body side;
A second structure that is supported by the first extension and extends in a second extension direction that intersects the first extension direction;
An operation member supported by the second structure, wherein a prescribed operation by a user is performed,
An operation cable for transmitting an operation performed on the operation member to the first extension portion side,
A connecting portion that connects the first extending portion and the second structure is provided with a cable insertion portion through which the operation cable can be inserted,
The cable insertion portion, a first opening that opens toward one side of the first extension direction on the first extension portion side from the boundary surface of the first extension portion and the second structure, A furniture part, comprising: a second opening that opens toward one side in the second extension direction on the second structure side with respect to the boundary surface.

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