JP2018068676A - Chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chair which allows appearance property of a part which is not covered with a cover to be easily and selectively changed, and hardly provides any effect on rigidity or the like of the covered part even in a case where the appearance property is changed.SOLUTION: There is provided a chair comprising a covered part covered with a cover approximately entirely, where the covered part comprises an exposing part which is not covered with the cover, and a decoration member covering the exposing part as a separated part from the covered part. The covered part constructs a back-rest or a seat. The exposing part constructs a connection end part and a surrounding part thereof in the covered part for connection to another part as a separated body. Thereby, appearance property of a part which is not covered with the cover may be easily and selectively changed and rigidity or the like is hardly changed even if the appearance property is changed.SELECTED DRAWING: Figure 20

Description

  The present invention relates to a chair suitably used in an office or the like.

  Conventionally, various chairs including a backrest having a back plate are known (see, for example, Patent Document 1).

  By the way, in this kind of chair, there exists what covers the back board with the cover. Some backboards have an exposed portion that is not covered by a cover and exposed to the outside.

  The inventor considered to give a suitable appearance suitable for the user by selectively giving appearance characteristics such as color and texture to the exposed portion of the back plate.

  However, in general, the back plate is integrally formed of synthetic resin or the like. For this reason, if it changes and manufactures the color of the whole backplate in order to increase a color variation, cost will increase. Moreover, since changing the color of the entire back plate means changing the material of the back plate, there may be a problem that the strength and characteristics change for each color.

  In addition, the above situation is not restricted to a back board, It can apply also to the to-be-covered body which comprises chairs other than the back board which can be coat | covered with a cover.

JP 2011-024917 A

  The present invention has been made paying attention to the above circumstances, and it is easy to selectively change the appearance characteristics of the portion not covered by the cover, and even when the appearance characteristics are changed, the rigidity of the covered body is improved. The goal is to provide a chair that is difficult to influence.

  That is, the present invention has the following configuration.

  The invention according to claim 1 is a chair including a covered body that is substantially entirely covered by a cover, and the covered body includes an exposed portion that is not covered by the cover. The chair is a separate body from the covered body and includes a decorative member that covers the exposed portion.

  According to a second aspect of the present invention, the covered body constitutes a backrest or a seat, and the exposed portion is connected to the covered body for connecting to another part forming a separate body. The chair according to claim 1, which is an end portion and a peripheral portion thereof.

  According to a third aspect of the present invention, the exposed portion includes at least a protruding portion projecting from the covered body, and the decorative member main body can be externally fitted to the protruding portion. The chair according to claim 1, wherein the chair is provided.

  According to a fourth aspect of the present invention, the chair according to the first, second or third aspect, wherein the exposed portion includes a portion having a shaft hole that is rotatably connected to another portion constituting a separate body. It is.

  The invention according to claim 5 is the chair according to claim 4, wherein the decorative member includes the decorative member main body and a collar provided on a peripheral edge of the decorative member main body.

  The invention according to claim 6 is the chair according to claim 5, wherein the edge of the cover can be positioned at a position inside the outer edge of the collar.

  The invention according to claim 7 is the chair according to claim 1, 2, 3, 4, 5 or 6, wherein the covered body is a back plate constituting a backrest.

  As described above, according to the present invention, it is easy to selectively change the appearance characteristics of a portion not covered by the cover, and even if the appearance characteristics are changed, a chair that does not easily affect the rigidity of the body to be covered is provided. Will be able to do.

The perspective view which shows one Embodiment of this invention. The front view in the embodiment. The rear view in the embodiment. The left view in the embodiment. The right view in the same embodiment. The top view in the embodiment. The bottom view in the embodiment. The front view of the backrest in the embodiment. The left view for operation | movement description of the positioning mechanism of the embodiment. XX schematic sectional drawing in FIG. The YY line schematic sectional drawing in FIG. ZZ schematic sectional drawing in FIG. The elements on larger scale of the lower end part in FIG. The elements on larger scale of the left end part in FIG. The exploded perspective view of the backrest in the embodiment. The decomposition | disassembly right view of the backrest in the embodiment. The disassembled perspective view of the positioning mechanism in the embodiment. A perspective view of a back board etc. in the embodiment. The front view of the back board etc. in the same embodiment. The elements on larger scale in the embodiment. The elements on larger scale in the embodiment. The rear view of the back board etc. in the embodiment. The right view of the back board etc. in the embodiment. The top view of the backplate in the embodiment. The bottom view of the back board etc. in the embodiment. The VV sectional view taken on the line in FIG. The perspective view of the backplate cover which fractured | ruptured a part in the same embodiment. The perspective view of the backplate cover which fractured | ruptured a part in the same embodiment. The rear view of the back board cover etc. in the embodiment.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

  In this embodiment, the present invention is applied to a chair A which is an office rotary chair used in an office or the like.

  The chair A includes a leg B, a support base C supported by the leg B so as to be pivotable, a seat D disposed on the support base C, and a back supported so as to be able to tilt backward with respect to the support base C. It is equipped with drowning H.

  Hereinafter, each structure of this chair A is explained in full detail.

<< Leg B >>
The leg B includes a plurality of leg blades b1 having a caster b3 at the tip, and a leg column b2 erected on the base end portion of the leg blade b1. The leg support b2 is configured to be vertically extendable and supports the support base C so that the position of the support base C can be changed vertically.

<< support base C >>
The support base C is mainly composed of a metal block frame-like member connected to the upper end of the leg B. The support base C is provided with a main shaft j1 extending in the left-right direction, which is a rotation shaft of the backrest H.

  On the upper part of the support base C, a front link L1 arranged in a pair on the left and right is rotatably supported. The front link L1 is inclined forward. A front end portion of the front link L1 is rotatably connected to the seat D, and a rear end portion of the front link L1 is supported to be rotatable with respect to the support base C.

<< Seat D >>
The seat D includes a seat receiver d1 having a shell shape made of a synthetic resin, and a seat body d2 having cushioning properties provided on the seat receiver d1 so that the front and rear positions can be changed. The front portion of the seat D is supported by the support base C via the front link L1. The rear portion of the seat D is supported by the support base C via a back frame 1 that forms a backrest H and is integrally provided with a rear link L2.

  The seat D is configured to move in synchronism with the backward tilting motion of the backrest H by a so-called weight sensing type locking mechanism F. In the initial state, the weight sensing type locking mechanism F has the front link L1 and the rear link L2 tilted forward, and when the backrest H is tilted backward, the front link L1 and the rear link L2 act. The seat D is configured to be movable rearward and upward as a whole.

<< Backrest H >>
The backrest H is supported so as to be rotatable around the main axis j1 of the support base C. The backrest H includes a back frame 1, a back plate 2 disposed on the front side of the back frame 1, a back plate cover 4 serving as a cover and covering substantially the entire back plate 2 which is a plate-like body. The decorative member E sheathed on the exposed portion 26 that is a part of the back plate 2 that is not covered by the back plate cover 4 and the back plate 2 are positioned so that the position of the back plate 2 can be changed in the front-rear direction. And a positioning mechanism 6.

<Back frame 1>
The back frame 1 performs a backward tilting operation around a main axis j1 provided on the support base C. The back frame 1 includes a left and right side frame portion 1a extending in the vertical direction, an upper frame portion 1b extending between the upper end portions of the left and right side frame portions 1a, and a lower end portion of the left and right side frame portions 1a. Left and right lower frame portions 1c extending to the left and right and left lower frame portions 1c are coupled to each other. The left and right side frame portions 1a, the upper frame portion 1b, the left and right lower frame portions 1c, and the lower connecting portion 1d are integrally formed of synthetic resin.

  Each of the left and right side frame portions 1a has a shape of a member that gradually becomes wider toward the bottom. Each of the left and right side frame portions 1a has a substantially square shape in a side view and a front view. The left and right side frame portions 1 a are obtained by connecting an upper frame portion 11 and a lower frame portion 13 via a bent portion 12. The upper frame portion 11 is inclined backward in a side view, and the lower frame portion 13 is inclined forward in a side view.

  The upper frame portion 1b connects the upper end portions of the side frame portion 1a. In order to attach the upper end portion of the back plate 2 to the front surface of the upper frame portion 1b, a plurality of recessed portions 14 opened forward are provided at intervals in the left-right direction. On the bottom surface of the upper frame portion 1b, there is provided a bolt insertion hole (not shown) for inserting a bolt v1 communicating with the inside of each recessed portion 14 from the outside. The rear surface of the upper frame portion 1b is formed flat.

  The left and right lower frame portions 1c are connected to the left and right side frame portions 1a and extend in the front-rear direction. The front portions of the left and right lower frame portions 1c are arranged at positions corresponding to the main shaft j1 provided on the support base C. The left and right lower frame portions 1c extend to both sides of a support base C disposed at the front end portion below the seat D. The left and right lower frame portions 1c are provided with concave portions 15 that open to the front side and the inner side and into which both end portions of the main shaft j1 are inserted. The recessed portion 15 can be concealed by the concealing member 17. The left and right lower frame portions 1c have a curved shape so as to gradually rise rearward in a side view. The left and right lower frame portions 1c are inclined backward in a side view. The left and right lower frame portions 1c are provided with bearing protrusions 16 having shaft holes 161 constituting the positioning mechanism 6 on the upper surface side in the rear portion.

  The lower connecting portion 1d in the back frame 1 is a plate-like member for rigidly connecting the left and right lower frame portions 1c.

  The side frame portion 1a and the lower frame portion 1c are integrally continuous so as to form an S shape in a side view. The lower frame portion 13 and the lower frame portion 1c in the side frame portion 1a have a substantially U shape in a side view, and the side frame portion 1a and the lower frame portion 1c are connected via a bent portion 18. It is continuously connected.

<Back plate 2>
The back plate 2 is integrally formed of a synthetic resin, and includes a back frame K formed on the peripheral edge portion and a back plate main body M disposed inside the back frame K.

  First, the back frame K will be described.

  The back frame K includes a left and right side frame portion 2a extending in the vertical direction, an upper frame portion 2b that connects the upper end portions of the side frame portion 2a, and a lower frame portion 2c that connects the lower end portions of the left and right side frame portions 2a. It is equipped with. That is, the back frame K includes the left and right side frame portions 2a, the upper frame portion 2b provided between the upper ends of the left and right side frame portions 2a, and the lower frame portion provided between the lower ends of the left and right side frame portions 2a. It is a frame-like thing mainly composed of 2c.

  The left and right side frame portions 2a are formed by connecting an upper frame portion 21 inclined backward in a side view and a lower frame portion 23 inclined forward in a side view through a protruding portion 22 that protrudes most forward. .

  The left and right side frame portions 2a are provided with recessed seam allowance portion disposing portions ns that can dispose left and right seam allowance portions 44 in the back plate cover 4 on the rear surface side of the outer edge. The seam allowance portion 44 is made of cloth inevitably formed in the vicinity of the sewing joint portion by sewing one cover component 41 and the other cover component 42 to form the bag-like portion 4h. It is a surplus protrusion part. The seam allowance portion disposing portion ns engages with the seam allowance portion 44 to stably position the back plate cover 4 on the back plate 2. That is, by positioning the seam allowance portion 44 formed on the inner surface side of the back plate cover 4 at the seam allowance portion disposing portion ns of the back plate 2, the movement of the back plate cover 4 relative to the back plate 2 is suppressed. . The seam allowance portion disposing portion ns is continuously provided in the vertical direction on the back side of the outer edge of the upper frame portion 21 constituting the left and right side frame portions 2a and on the back side of the outer edge of the protruding portion 22. .

  FIG. 29 is a schematic rear view mainly for explaining the positioning of the back plate cover 4 and the back plate 2. For convenience of explanation, the back plate 2 shows only the back frame K, and the seam allowance portion 44 and the push-in member p2 are colored for easy understanding.

  The lower frame portion 23 is formed so as to be gradually displaced inward toward the lower side. The left and right lower frame portions 23 are arranged so as to form a so-called bottom constriction in which the separation distance gradually decreases downward.

  The lower frame portion 23 is provided with mounting grooves that can hold the free end on the opening side of the bag-like back plate cover 4, that is, first and second mounting grooves mz1 and mz2. The lower frame portion 23 includes a first attachment groove mz1 to which the attachment edge 41e of one cover component 41 in the back plate cover 4 can be attached, and an attachment edge of the other cover component 42 in the back plate cover 4. The second mounting groove mz2 to which 42e can be mounted is provided. The first and second mounting grooves mz1 and mz2 are mainly composed of a bottomed groove-shaped portion, and extend in the vertical direction along the edge of the lower frame portion 23, and are respectively outward. It is open. The first and second mounting grooves mz1, mz2 are arranged adjacent to each other in the front-rear direction. That is, the first mounting groove mz1 is disposed adjacent to and substantially parallel to the second mounting groove mz2.

  The seam allowance portion formed in the protruding portion 22 is disposed on the lower frame portion 23 at positions above the first and second mounting grooves mz1 and mz2, that is, on the upper end portions of the mounting grooves mz1 and mz2 in a side view. A communication path rt is provided that allows the part ns and the first and second mounting grooves mz1 and mz2 to communicate spatially. The communication path rt has a groove shape opened to the outside, that is, left and right.

  Under the first and second mounting grooves mz1 and mz2 in the lower frame portion 23, bearing protrusions 24 (L) and 24 (R) as projecting portions having shaft holes 241 constituting the positioning mechanism 6 are provided on the front side. Projected in pairs on the left and right. More specifically, the back plate 2 is a left bearing projection that is a left projecting portion that is paired to the left and right to pivotally connect to the left and right links 6a and 6b that constitute the positioning mechanism 6 that is another member. 24 (L) and a right bearing protrusion 24 (R) which is a right protruding portion.

  The left and right bearing protrusions 24 (L) and 24 (R) and the vicinity thereof in the back plate 2 are exposed portions 26 that are portions not covered by the back plate cover 4. The decorative member E packaged on the exposed portion 26 will be described in detail later.

  The upper frame portion 2b is integrally formed between the upper ends of the left and right side frame portions 2a, and has a curved shape so as to protrude rearward in plan view. The upper frame portion 2b is set such that the dimension in the front-rear direction is shorter than the dimension in the vertical direction in a cross-sectional view. A curved connecting portion w is disposed in front of the upper frame portion 2b.

  The upper frame portion 2 b of the back plate 2 is connected to the upper end portion of the back frame 1. That is, the upper frame portion 2b includes a fitting protrusion 25 that can be fitted into the recessed portion 14 of the back frame 1 on the back surface. The fitting protrusion 25 protrudes rearward. The fitting protrusion 25 is provided with a screw hole h1 into which the bolt v1 is screwed. After fitting the fitting protrusion 25 of the upper frame portion 2b into the recessed portion 14 of the back frame 1, the upper end of the back plate 2 is screwed by screwing a bolt v1 inserted from below into the screw hole h1. The upper frame portion 2 b that is a portion is fixed to the upper frame portion 1 b that is the upper end portion of the back frame 1.

  The lower frame portion 2c is constructed between the lower end portions of the left and right side frame portions 2a. The lower frame portion 2c includes a first attachment groove mz1 to which the attachment edge 41e of one cover component 41 in the back plate cover 4 can be attached, and an attachment edge 42e of the other cover component 42 in the back plate cover 4. Is provided with a second mounting groove mz2. The first and second mounting grooves mz1, mz2 extend in the left-right direction along the edge of the lower frame portion 2c, and are opened downward. The first and second mounting grooves mz1, mz2 are arranged adjacent to each other in the front-rear direction. That is, the first mounting groove mz1 is disposed adjacent to and substantially parallel to the second mounting groove mz2.

  In this embodiment, the first and second mounting grooves mz1 and mz2 provided in the lower portion of the back plate 2 are respectively interposed by the left bearing protrusion 24 (L) and the right bearing protrusion 24 (R). The configuration is divided into three parts, the middle, left side, and right side. That is, the first and second mounting grooves mz1 and mz2 of the back plate 2 are intermediate mountings provided between the left bearing projection 24 (L) and the right bearing projection 24 (R) in the lower frame portion 2c. Grooves mz1 (C), mz2 (C), left mounting grooves mz1 (L), mz2 (L) provided on the side frame portion 2a located to the left of the left bearing protrusion 24 (L), Right side mounting grooves mz1 (R) and mz2 (R) provided in the side frame portion 2a located to the right of the bearing protrusion 24 (R) are provided.

  Next, the back plate body M will be described.

  The back plate body M is disposed inside the back frame K. The back plate main body M includes a waist region m1 disposed at an intermediate position in the vertical direction substantially corresponding to the waist portion of the seated person, an upper region m2 disposed above the waist region m1, and below the waist region m1. And a lower region m3. The stiffness of the waist region m1 is set higher than the stiffness of the upper region m2 and the lower region m3. In other words, the upper region m2 and the lower region m3 are set to be more easily elastically deformed than the waist region m1.

  The waist region m1 is mainly composed of a plurality of strip-like members m11 provided between the left and right side frame portions 2a and extending in the left-right direction. More specifically, the plurality of belt-like members m11 are arranged so as to connect the lower end portions of the upper frame portion 21 in the left and right side frame portions 2a. A plurality of belt-like members m11 in the waist region m1 are arranged side by side at regular intervals at regular intervals via slits m13. In this embodiment, the waist region m1 is composed of five belt-like members m11 that extend linearly in the left-right direction in a front view and are arranged side by side in the vertical direction so as to be parallel to each other. The belt-like member m11 has a substantially rectangular shape in cross-sectional view. Adjacent belt-like members m11 in the waist region m1 are partially connected via an upper and lower connection piece m12. The belt-like member m11 is set to have substantially the same width dimension across the left and right side frame portions 2a. In addition, the width dimension of the slit m13 formed between the adjacent belt-like members m11 and the width dimension of the belt-like member m11 in the waist region m1 are set to be substantially the same.

  The upper region m2 is mainly composed of a plurality of belt-like members m21 extending in the vertical direction provided between the upper frame portion 2b and the upper end portion of the waist region m1, that is, the belt-like member m11 constituting the waist region m1 disposed on the uppermost side. It is configured. More specifically, the upper region m2 is positioned between the plurality of belt-like members m21 extending in the vertical direction in the front view, and between the plurality of belt-like members m21 and the upper frame portion 2b. And a curved connecting portion w which is a plurality of connecting portions connected to each other.

  The plurality of belt-like members m21 constituting the upper region m2 extend in the vertical direction, and are arranged side by side in the left-right direction at regular intervals via the slit m23. The band-shaped member m21 is set to have substantially the same width dimension from the upper end connected to the curved connection part w to the lower end connected to the band-shaped member m11 in the waist region m1. The plurality of strip-like members m21 have a substantially rectangular shape in cross-sectional view.

  The upper region m2 is disposed below the middle region component r1 disposed at the middle in the vertical direction, the upper region component r2 disposed on the middle region component r1, and the middle region component r1. And a lower region constituent part r3. The rigidity of the middle region constituent part r1 is set lower than the rigidity of the upper region constituent part r2 and the lower region constituent part r3. That is, the adjacent belt-like members m21 in the upper region m2 are partially connected via the left and right connection pieces m22. Further, the lateral connection degree by the left and right connection pieces m22 in the middle region constituent part r1 is set lower than the lateral connection degree by the left and right connection pieces m22 in the upper region constituent part r2 and the lower region constituent part r3. Has been.

  Specifically, in the middle region constituting part r1, only two adjacent band-like members m21 are connected via the left and right connection pieces m22 on the virtual straight line s1 extending in the left-right direction. The upper region constituting unit r2 includes a portion r21 that continuously connects three adjacent belt-like members m21 via left and right connection pieces m22 on a virtual straight line s2 extending in the left-right direction. The lower region constituting unit r3 includes a portion r31 that continuously connects three adjacent belt-like members m21 via left and right connection pieces m22 on a virtual straight line s3 extending in the left-right direction. In other words, in this embodiment, the level of connection in the horizontal direction is set according to the number of belt-like members m21 connected on the virtual straight lines s1, s2, and s3 by the left and right connection pieces m22.

  The curved connecting portion w provided in the upper region m2 has a thin strip-like shape interposed between the plurality of strip-like members m21 extending in the vertical direction in the front view and the upper frame portion 2b. In this embodiment, the curved connecting portion w has a curved shape so as to protrude forward, more specifically, toward the front upper side. A plurality of the curved connection portions w are provided corresponding to the respective strip-like members m21. The thickness dimension of the curved connecting portion w is set to be the same as the thickness dimension of the belt-like member m21. The curved connection portion w has a thin plate shape, and the rear end edge thereof is connected only to the upper end portion of the upper frame portion 2b. The upper end of the curved connection part w located in front of the upper frame part 2b is arranged at a position higher than the upper end of the upper frame part 2b. The curved connection part w is set to have substantially the same width dimension from the front end part connected to the belt-like member m21 to the rear end part connected to the upper frame part 2b. The plurality of curved connecting portions w have a substantially rectangular shape in cross-sectional view. The curved connection portion w is located above the lower end edge n1 of the upper frame portion 2b in the front view.

  In the back plate 2, the width dimension w1 of the slit ws formed between the adjacent curved connecting portions w is set shorter than the width dimension w2 of the slit m23 formed between the adjacent strip-shaped members m21. More specifically, the width dimension w1 of the slit ws formed between the adjacent curved connecting portions w is set to about one third of the width dimension w2 of the slit m23 formed between the adjacent belt-like members m21. Has been. The width dimension w4 of the belt-like member m21 in the upper region m2 is set shorter than the width dimension w3 of the curved connection portion w. The width dimension w2 of the slit m23 formed between the adjacent band-shaped members m21 and the width dimension w4 of the band-shaped member m21 in the upper region m2 are set to be substantially the same.

  The curved connecting portion w is formed such that the front surface thereof forms a flat curved surface. In other words, the curved connecting portion w is formed such that the outer surface of the front surface thereof is smoothly formed and there is no uneven shape. The outer surface of the curved connection part w and the outer surface of the belt-like member m21 are set to be flush with each other. By doing in this way, the uneven | corrugated shape resulting from the outer surface shape of the curved connection part w does not appear easily on the backplate cover 4 which covers the curved connection part w and is supported by the curved connection part w. It has become.

  The lower region m3 includes a plurality of belt-like members m31 extending in the vertical direction provided between the lower frame portion 2c and the lower end portion of the waist region m1, that is, the belt-like member m11 constituting the waist region m1 disposed on the lowermost side. Consists of the subject. The plurality of belt-like members m31 are arranged side by side in the left-right direction at regular intervals through the slit m33. The belt-like member m31 is set to have substantially the same width dimension from the upper end portion connected to the belt-like member m11 in the waist region m1 to the lower end portion connected to the lower frame portion 2c. The plurality of strip-like members m31 have a substantially rectangular shape in sectional view. The plurality of strip-like members m31 arranged in the middle portion in the left-right direction in the lower region m3 are set to be longer than the plurality of strip-like members m31 arranged in the left and right side portions in the lower region m3. In addition, the width dimension of the slit m33 formed between the adjacent strip-shaped members m31 and the width dimension of the strip-shaped member m31 in the lower region m3 are set to be substantially the same.

  The back plate 2 includes an exposed portion 26 that is not covered by the back plate cover 4 described above. In this embodiment, the exposed portion 26 is a bearing protrusion 24 that is a connecting end portion of the back plate 2 that is a covered body for rotatably connecting to the left and right links 6a and 6b that are other members that are separate members. It is composed of the surrounding parts. In other words, the exposed portion 26 includes the bearing protrusion 24 that is a protruding portion protruding from the back plate 2.

  In this embodiment, the thickness dimension of the strip member m21 in the upper region m2, the strip member m31 in the lower region m3, and the upper and lower connection pieces m12 in the waist region m1 are set to be substantially the same. Moreover, each thickness dimension of the strip | belt-shaped member m11 of the waist | hip | lumbar area | region m1 and the left-right connection piece m22 of the upper area | region m2 is set substantially the same.

  The thickness dimensions of the belt-like member m11 in the waist region m1 and the left and right connection pieces m22 in the upper region m2 are the upper and lower connections of the belt-like member m21 in the upper region m2, the belt-like member m31 in the lower region m3, and the waist region m1. It is set to be thicker than each thickness dimension of the piece m12.

  The back plate main body M in the back plate 2 configured as described above can support the seated person's waist strongly because the belt-like member m11 in the waist region m1 has a relatively large thickness. Further, the back plate main body M of the back plate 2 is such that the left and right connection pieces m22 in the upper region m2 have a relatively large thickness, and thus can suitably withstand the stress concentrated on the connection location.

  The back plate 2 described above is provided with a decorative member E that covers the exposed portion 26 that is not covered by the back plate cover E.

<Decorative member E>
The decorative member E is separate from the back plate 2. The decorative member E is integrally formed of a synthetic resin. The decorative member E can give an appearance characteristic different from the appearance characteristic of the exposed portion 26. For convenience of explanation, the decorative member E is colored in the drawing. That is, by giving a so-called spot-like appearance characteristic to the part of the entire chair A using the decorative member E, a suitable visual impression can be given to the user. Note that the appearance characteristic of the decorative member E in this embodiment is color. That is, the decorative member E has a color different from that of the back plate 2. The decorative member E can show the user a color different from the back plate 2 by covering the exposed portion 26 where the color of the back plate 2 can be exposed. As an example, when the back plate 2 is made of a synthetic resin having a white color, the decorative member E can be set to a color other than white (for example, black). Of course, the color of the decorative member E can be provided with an appropriate color including a pattern. In addition, as another external appearance characteristic, the texture which can be exhibited by surface shape and material (for example, metal etc.) can be mentioned.

  The decorative member E includes a decorative member main body e1 that has a recessed shape that can be fitted to the bearing protrusions 24 that are left and right protruding portions, and a collar e2 that is provided at the peripheral edge of the decorative member main body e1. The decorative member body e1 has a shaft insertion hole e11 that communicates with the shaft hole 241 of the bearing protrusion 24 in the left-right direction.

  The eaves part e2 can be fitted into a recessed part 2h formed in the peripheral region of the bearing projection 24 of the back plate 2. The eaves part e2 includes a positioning convex part e21 fitted in a positioning concave part 2i provided on the back plate 2, and first and second mounting grooves mz1 (L), mz1 (R), mz2 (L), mz2 ( And a notch e22 provided at a position corresponding to R). In addition, the recessed edge provided in the left and right lower corners in the front view of the back plate cover 4, that is, the exposed portion forming edge 411 of one cover component 41, is inside the outer edge of the collar portion e 2, that is, the makeup. It is set so as to be positioned on the member main body e1 side.

  Next, the back plate cover 4 will be described.

<Back cover 4>
The back plate cover 4 is mainly composed of cloth such as cloth. The back plate cover 4 is mainly composed of one cover component 41 that can cover the front side that is one side of the back plate 2 and cloth such as cloth, and the rear side that is the other side of the back plate 2. It has the other cover component 42 that can be covered. On the back surface of one cover component 41 located on the front side of the back plate 2, an inner cushion 43 made of a sheet-like foam is disposed. The back plate cover 4 in this embodiment does not employ a configuration in which separated cover components are coupled using a coupling tool such as a fastener or a coupling button. That is, the back plate cover 4 is configured to cover substantially the entire back plate 2 without using a connector.

  The back plate cover 4 is a lower side formed by partially sewing the side and upper peripheral portions of one cover component 41 and the side and upper peripheral portions of 42 to the other cover component 41. The bag-shaped part 4h which can open toward is provided. A plate member having a communication hole 45a through which the fitting projection 25 of the back plate 2 can protrude outward from the back plate cover 4 on the upper back side portion of the back plate cover 4 which is a part of the bag-like portion 4h. 45 is attached.

  The attachment edge 41e (C), 41e (L), 41e (R) of one cover component 41 in the back plate cover 4 is provided with a pushing member p1 having a strip shape made of synthetic resin. The pushing member p <b> 1 is sewn to the fabric constituting the one cover component 41.

  The attachment edge 42e (C), 42e (L), 42 (R) of the other cover component 42 in the back plate cover 4 is provided with a push-in member p2 having a strip shape made of synthetic resin. In addition, the pushing member p2 of the attachment end edge 42e (C), 42e (L), 42 (R) of the other cover component 42 has an L-shape in cross section. The push-in member p2 of the other cover component 42 includes an inserted inner piece p21 to be inserted into the back of the second mounting groove mz2, and an opening side of the first mounting groove mz1 from the outer edge of the inserted inner piece p21. And an extended outer piece portion p22 extending toward. The inserted inner piece p21 of the pushing member p2 is sewn to the fabric constituting the other cover component 42.

  A part of the fabric constituting the other cover component 42 is pushed by the tip edge of the extended outer piece portion p22 of the push-in member p2 and positioned at a position close to the first mounting groove mz1. That is, by using the pushing member p2 having an L shape in cross section, the attachment edge 42e of the other cover component 42 can be suitably attached to the second attachment groove mz2, and the attachment in the one cover component 41 is possible. Appearance is impaired between the end edges 41e (C), 41e (L), 41 (R) and the mounting end edges 42e (C), 42e (L), 42 (R) of the other cover component 42. Since such a gap is difficult to form, a suitable appearance can be formed.

<Positioning mechanism 6>
The positioning mechanism 6 can position the back plate 2 by selecting either the front position (f) or the rear position (r). That is, the back plate 2 is configured to be position-changeable between the front position (f) and the rear position (r) by the positioning mechanism 6 with the upper end portion of the back plate 2 as the rotation center.

  In this embodiment, the part which can be mainly engaged with the waist of the seated person differs depending on whether the back plate 2 is located at the front position (f) or the rear position (r). . That is, when the back plate 2 is in the front position (f), the lower portion of the waist region m1 of the back plate body M can be mainly engaged with the waist of the seated person, and the back plate 2 is When in the rear position (r), the upper part of the back plate body M above the lower part of the waist region m1 can be mainly involved with the seated person's waist.

  The positioning mechanism 6 is configured to be stably positioned at either the front position (f) or the rear position (r) using the elastic deformation of the back plate 2.

  The positioning mechanism 6 includes left and right links 6 a and 6 b that are pivotally supported so as to be pivotable in the front-rear direction with respect to the back frame 1 and are arranged in pairs.

  The positioning mechanism 6 is provided between the rearward inclined portion in the lower part of the back frame 1 and the lower end portion of the back plate 2.

  The positioning mechanism 6 rotatably connects the left and right links 6a and 6b supported by the bearing protrusion 16 of the back frame 1 and the rotation ends of the left and right links 6a and 6b to the bearing protrusion 24 of the back plate 2. A tip shaft sj and an operation lever 6c for directly rotating the left link 6a, which is one of the links, are provided. The left and right links 6a and 6b are set so as to be able to rotate only between a front position (a) inclined forward and a rear position (c) inclined backward.

  The left link 6a (left side in front view) is rotated in the front-rear direction by an operating force applied to the operation lever 6c, and includes an inner link member 61 and an outer link member 62.

  The lower part of the inner link member 61 is in contact with the inner side surface of the bearing projection 16 in the back frame 1 and the upper part is in contact with the inner side surface of the bearing projection 24 in the back plate 2. The inner link member 61 integrally includes a base end shaft kj that is inserted into the shaft hole 161 of the bearing protrusion 16 in the back frame 1 and a distal end shaft sj that is inserted into the shaft hole 241 of the bearing protrusion 24 in the back plate 2. I have. A bolt insertion hole h <b> 2 through which the bolt v <b> 2 can be inserted is formed at an intermediate position of the inner link member 61.

  The lower part of the outer link member 62 is in contact with the outer surface of the bearing protrusion 16 in the back frame 1 and the upper part thereof is in contact with the outer surface of the bearing protrusion 24 in the back plate 2. A base end side fitting hole (not shown) into which the end is fitted and a tip side fitting hole 622 into which the penetrating end of the tip shaft sj is fitted are provided. A spacer projection 63 is provided at an intermediate position of the outer link member 62 to keep the distance between the outer link member 62 and the inner link member 61 constant. The spacer protrusion 63 is provided with a portion into which the bolt v2 inserted through the bolt insertion hole h2 is screwed. That is, the inner link member 61 and the outer link member 62 are coupled via the bolt v2.

  The spacer protrusion 63 is configured such that the front edge or the rear edge of the spacer protrusion 63 can come into contact with the front surface or the rear surface of the bearing protrusion 16 in the back frame 1, and the left link 6a is moved from the front position (a) to the rear position ( It has a function of restricting the rotation range so that it can rotate only until c).

  On the outer surface of the base end portion of the outer link member 62, a prismatic boss portion 64 is projected so that the shaft center coincides with the shaft center of the base end side fitting hole 621. The base end portion of the operation lever 6c is fitted to the boss portion 64, and is prevented from coming off from the boss portion h7 by a bolt v7. A ring member 6d is interposed between the peripheral edge of the base end portion of the operation lever 6c and the outer link member 62. The operation lever 6 c connected to the outer link member 62 can rotate integrally with the outer link member 62.

  The right link 6b (right side in front view) has a configuration similar to that of the left link 6a described above, and the corresponding components are given the same reference numerals and description thereof is omitted. The right link 6b is different from the left link 6a in that the outer link member 62 is not provided with an operation lever. Of course, the right link 6b may be configured to be provided with an operation lever in the same manner as the left link 6a.

  As described above, the chair A according to this embodiment includes the back plate 2 that is a covered body that is substantially entirely covered by the back plate cover 4 serving as a cover. The back plate 2 includes an exposed portion 26 that is not covered by the back plate cover 4, and the back plate 2 is a separate body and includes a decorative member E that covers the exposed portion 26. For this reason, it is easy to selectively change the appearance characteristics of the portion not covered by the back plate cover 4 and can provide the chair A in which the rigidity or the like of the back plate 2 is not easily changed even when the appearance properties are changed. It becomes.

  If it is such, a color variation can be increased cheaply by changing the color of only the decorative member E which covers the exposed part 26, with the backplate 2 whole remaining as one color. Furthermore, if only the decorative member E is changed, the basic strength and characteristics of the back plate 2 can be maintained in the same state.

  The decorative member E that covers the exposed portion 26 can selectively impart appearance characteristics such as color and texture to a portion that is not covered by the back plate cover 4. For this reason, the decorative member E can provide a suitable appearance according to the user. Moreover, the back plate 2 can be integrally formed of the same material. For this reason, even if it comprises so that the color of the site | part which is not covered with the backplate cover 4 in the backplate 2 can be changed selectively, it becomes easy to aim at homogenization of the rigidity of the said backplate 2, etc. Yes.

  The exposed portion 26 is a bearing protrusion 24 that is a connection end portion of the back plate 2 for connecting to the left and right links 6a and 6b, which are other parts that are separate bodies, and its peripheral portion. In other words, the exposed portion 26 includes the bearing protrusion 24 that is a protruding portion protruding from the back plate 2. For this reason, the exposed portion 26, which is a portion that is difficult to be covered with the back plate cover 4, can be covered with the decorative member E.

  The exposed portion 26 includes a bearing protrusion 24 having a shaft hole 241 that is rotatably connected to the left and right links 6a and 6b. For this reason, the bearing protrusion 24 provided with the shaft hole 241 which is a portion difficult to be covered by the back plate cover 4 and its peripheral portion can be suitably covered.

  The decorative member E includes a decorative member main body e1 that can be fitted onto the bearing protrusion 24 that is a protruding portion. For this reason, the bearing protrusion 24 which is a part difficult to be covered by the back plate cover 4 is fitted on the decorative member main body e1, and the bearing protrusion 24 can be suitably covered.

  The decorative member E includes a decorative member main body e1 and a collar e2 provided on the peripheral edge of the decorative member main body e1. For this reason, the decorative member E which has the collar part e2 can be suitably coat | covered so that the exposed part 26 of the backplate 2 cannot be visually recognized easily.

  The exposed portion forming edge 411 that is the end edge of the back plate cover 4 is set at a position inside the outer edge of the flange portion e2. For this reason, since the site | part of the backplate 2 which the decorative member E does not coat | cover is a thing which is hard to be visually recognized by a user, a suitable external appearance can be given.

  The present invention is not limited to the embodiment described in detail above.

  The cover is not limited to covering the back plate. In other words, the cover may be anything as long as it covers the part constituting the chair. In other words, the covered body is not limited to the back plate, and may be, for example, a member constituting a seat, a headrest or an armrest.

  The exposed portion may be a portion that is not covered by the cover, and is not limited to that shown in the above-described embodiment.

  Of course, various shapes and structures of the decorative member can be applied according to the specific shape of the portion to be mounted.

  Of course, a headrest for supporting the seated person's head from the rear side may be attached to the backrest.

  Of course, an armrest for supporting the elbow or arm of the seated person from below may be attached to the seat or the backrest.

  In addition, the specific configuration of each part is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

2 ... Back plate (covered body)
4 ... Backboard cover (cover)
26 ... exposed part E ... decorative member

Claims (7)

A chair with a covered body substantially entirely covered by a cover,
The covered body includes an exposed portion that is not covered by the cover,
A chair that is separate from the covered body and includes a decorative member that covers the exposed portion. The covered body constitutes a backrest or a seat,
The chair according to claim 1, wherein the exposed portion is a connecting end portion and a peripheral portion thereof in the covered body for connecting to another portion forming a separate body. The exposed portion includes at least a protruding portion protruding from the covered body;
The chair according to claim 1 or 2, wherein the decorative member includes a decorative member main body that can be fitted onto the protruding portion. The chair according to claim 1, 2, or 3, wherein the exposed portion includes a portion provided with a shaft hole rotatably connected to another portion constituting a separate body. The chair according to claim 4, wherein the decorative member includes the decorative member main body and a collar provided on a peripheral edge of the decorative member main body. The chair according to claim 5, wherein the edge of the cover can be positioned at a position inside the outer edge of the collar. The chair according to claim 1, 2, 3, 4, 5 or 6, wherein the covered body is a back plate constituting a backrest.

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