JP2009148406A - Chair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a chair which is easily assembled without using any member for concealing a fixing member and also can surely conceal the fixing member. <P>SOLUTION: The chair includes a seat plate 2, a back plate 3, a seat frame 4 for supporting the seat plate 2, and a back frame 5 raised from the rear end of the seat frame 4 for supporting the back plate 3. The seat frame 4 includes left and right side frames 10 and a rear frame 11 disposed at the rear end between the side frames 10. On the lower surface of a back plate 3, a fixing piece 34 abutting on the upper surface of the rear frame 11 in a state of disposing the back plate 3 to the back frame 5 is provided. After disposing the back plate 3 to the back frame 5, the seat plate 2 is mounted on the seat frame 4 so as to cover the fixing piece 34, and at least the rear part of the seat plate 3 is fixed to the rear frame 11 by the fixing member 43. The fixing member 43 is fixed from the back surface side of the seat frame 4. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a chair in which a fixing member between a frame, a seat plate, and a back plate is not visually recognized from the outside in a normal use state.

  Basically, a chair is roughly divided into a frame, a seat plate, and a back plate. The seat plate and the back plate are fixed to the frame by a fixing member such as a screw. In a normal use state of the chair, if the fixing member that fixes each member is visually recognized from the outside, the appearance appearance is poor and the design is not preferable. In general, the seat plate is fixed to the frame by a fixing member from the back side thereof. Therefore, the fixing member for fixing the seat plate is located on the lower surface of the chair, and this is not visually recognized from the outside in the normal use state. However, even if the back plate is simply fixed to the frame from the back surface thereof, the fixing member for fixing the back plate is located on the back surface of the chair. Therefore, the fixing member for fixing the back plate can be easily visually recognized in the normal use state. Therefore, a special mechanism is required to prevent the fixing member for fixing the back plate from being visually recognized from the outside. For example, Patent Document 1 to Patent Document 3 are examples of chairs that prevent the fixing member for fixing the back plate from being visually recognized from the outside. In Patent Literature 1 and Patent Literature 2, the screw is concealed by covering the screw for fixing the back frame and the back plate with a cover member. In Patent Document 3, a screw is fixed obliquely from below to the back frame.

JP 2006-136572 A (paragraph 0043, FIGS. 3 and 6) Japanese Patent Laying-Open No. 2004-159712 (paragraph 0021, FIG. 4) JP 2000-135142 A (paragraph 0022, FIG. 1)

  However, in the chairs of Patent Document 1 and Patent Document 2, since a cover member for concealing the screw is separately provided, the number of parts is large, the assembly work is complicated, and the cost is increased. On the other hand, in the chair of patent document 3, since the screw is screwed into the back frame from obliquely below, the screw cannot be visually recognized from the horizontal direction or obliquely upward. However, in addition to the case where an adult squats down, the viewpoint of a short child is lowered even if it is as it is, so that it is not possible to reliably hide the screw.

  Therefore, an object of the present invention is to provide a chair that does not bother to use a member for concealing the fixing member and that can be easily concealed while being easily assembled.

  The chair of the present invention includes a seat plate, a back plate, a seat frame that supports the seat plate, and a back frame that stands from the rear end of the seat frame and supports the back plate. The seat frame includes left and right side frames and a rear frame constructed between the side frames at the rear ends of the left and right side frames. In a state where the back plate is arranged on the back frame, a fixing piece that contacts the upper surface of the rear frame of the seat frame is provided on the lower surface of the back plate. Then, after the back plate is arranged on the back frame, the seat plate is placed on the seat frame so as to cover the fixed piece of the back plate, and the seat plate is seated on at least the rear frame by a fixing member. Secure to the frame. The fixing member is fixed from the back side of the seat frame.

  At this time, since the fixed piece of the back plate is covered with the seat plate fixed to the rear frame, the fixed piece of the back plate is not necessarily fixed to the rear frame. Note that the seat plate and the back plate are not particularly limited as long as they are members that can receive and support the body of the seated person. Is also included. The fixing member is not particularly limited as long as it can fix the seat plate or the back plate to the frame. Typically, the fixing member corresponds to a screw or a bolt, but may be a pin member or a clip member.

  It is preferable that the fixing piece of the back plate and the rear frame of the seat frame are fixed by a fixing member different from a fixing member for fixing the seat plate and the rear frame. In this case, the fixing member for fixing the fixing piece of the back plate to the rear frame may be fixed from the back surface of the rear frame, but may be fixed from above the fixing piece. The fixing member that fixes the seat plate and the fixing member that fixes the back plate may not be the same.

  A flange projecting rearward is formed on the upper end of the back plate, and a projection projecting downward is provided on the lower surface of the flange. On the other hand, a fitting hole is formed in the upper surface of the back frame. When the back plate is arranged on the back frame, the flange of the back plate is in contact with the upper surface of the back frame, and the projection of the flange is fitted with the fitting hole of the back frame.

  Moreover, it is preferable to form a recess in which the fixing piece is accommodated in a portion of the rear frame of the seat frame that comes into contact with the fixing piece of the back plate.

  According to the present invention, when the back plate is arranged on the back frame, the fixed piece comes into contact with the upper surface of the rear frame of the seat frame, and from this state, the seat plate is mounted on the seat frame so as to cover the fixed piece of the back plate. Therefore, the fixed piece to which the back plate is fixed is concealed by the seat plate. That is, since the fixing part of the back plate is reliably concealed, the fixing piece of the back plate is not visually recognized from any angle, and the design is dramatically improved. Since a member that conceals the fixed piece of the back plate is not used, the number of parts is small, which contributes to cost reduction. Further, the fixing plate can be concealed only by placing the back plate on the back frame and placing the seat plate on the seat frame, and the assembling work is extremely easy.

  Further, since the seat plate is fixed to the seat frame in at least the rear frame that overlaps with the fixed piece of the back plate, even if the fixed piece of the back plate is not fixed to the rear frame, the fixed piece is connected to the seat plate. The back plate can be held by being sandwiched by the rear frame. Naturally, since the fixing member for fixing the seat plate to the rear frame is fixed from the back surface of the rear frame, this is not visually recognized from the outside in the normal use state of the chair.

  If the fixed piece of the back plate is also fixed to the rear frame by a dedicated fixing member, the back plate can be fixed securely. In this case, even if the fixing member is fixed from above the fixing piece, the fixing member is also concealed by the seat plate, so there is no problem in design. Further, if the back plate is also fixed to the rear frame independently, it is not always necessary to hold the fixed piece of the back plate between the seat plate and the rear frame, and the design freedom of the seat plate is increased. Further, if the fixing member for fixing the back plate is fixed from above the fixing piece, it is not necessary to turn the chair upside down or to fix it while bending, so that the fixing work can be performed easily.

  If the back plate is fixed only by the fixed piece, the lower portion of the back plate is fixed, but the upper portion of the back plate may be rattled. Therefore, when the back plate is arranged on the back frame, if the protrusion of the flange is fitted with the fitting hole of the back frame, the upper portion of the back plate is fixed to the back frame, so that the back plate does not rattle. . Moreover, a fixing force acts on the fixed piece of the back plate in the vertical direction. On the other hand, since the protrusion is also fitted from above the fitting hole, the fixing direction of the fixing piece and the protrusion is the same direction, and it is possible to surely prevent the back plate from being accidentally dropped from the back frame.

  If the fixed piece of the back plate is housed in the recess of the rear frame, backlash in the left-right direction of the back plate can be suppressed.

Example 1
Hereinafter, examples of the present invention will be described with reference to the drawings as appropriate. However, the present invention is not limited to these, and various modifications can be made without departing from the gist of the present invention. FIG. 1 shows an exploded perspective view of the chair body 1. FIG. 2 shows an enlarged rear perspective view of a main part in a state in which the back plate 3 is arranged on the back frame 5. FIG. 3 shows a front perspective view of the state in which the back plate 3 is fixed to the back frame 5. FIG. 4 shows an enlarged view of a main part in a state in which the seat plate 2 is arranged on the seat frame 4. In FIG. 5, the vertical side view of the chair main body 1 is shown. FIG. 6 shows a front perspective view of the chair body 1. FIG. 7 shows a rear perspective view of the chair body 1.

  In FIG. 1, a chair body 1 includes a seat plate 2 that supports a seated person's buttocks, a back plate 3 that supports the back of the seated person, a seat frame 4 that supports the seat plate 2, and a back that supports the back plate 3. A frame 5 and four legs 6 provided in pairs on the left and right sides are provided. The seat frame 4 includes left and right side seat frames 10, 10 arranged in the front-rear direction, and a rear frame that is laid in the left-right direction between the side seat frames 10, 10 at the rear ends of the left and right side seat frames 10, 10. 11 and a front frame 12 installed in the left-right direction between the side seat frames 10 and 10 at the front ends of the left and right side seat frames 10 and 10, and presents a square frame with a large opening at the center. Since a large load from the thigh of the seated person may act on the front side of the seat frame 4, the front frame 12 is configured so as to support the front portion of the seat plate 2 stably. It is formed wider than the rear frame 11. As will be described later, the rear frame 11 is designed to be wider than the side seat frame 10 because the back frame 3 is fixed to the back plate 3 together with the seat plate 2. A concave portion 13 is formed in the lower left and right central portions of the rear frame 11 so as to be depressed downward.

  The back frame 5 includes left and right side back frames 15 and 15 erected from the rear ends of the left and right side seat frames 10 and 10 of the seat frame 4, and both side back frames 15 at the upper ends of the left and right side back frames 15 and 15. -It consists of the upper frame 16 erected in the left-right direction between 15 and presents a square frame with a large opening at the center by the rear frame 11 of the seat frame 4. The left and right side back frames 15 and 15 are formed in a streamlined shape in which a portion corresponding to the waist of the seated person is curved forward and an upper part is inclined backward so that the seated person can be supported in a comfortable sitting posture. In addition, fitting holes 17 are formed in the upper surfaces of the left and right side back frames 15 and 15.

  The seat frame 4, the back frame 5, and the legs 6 are each made of wood, and the pair of front and rear legs 6, 6, the side seat frame 10, and the side back frame 15 are integrally formed on the right side and the left side. . The front frame 12 and the rear frame 11 of the seat frame 4 are fitted and bonded to the side seat frames 10 and 10, and the upper frame 16 of the back frame 5 is also fitted and bonded to the side back frames 15 and 15.

  The seat plate 2 has a configuration in which a mesh 21 is stretched over the entire center opening of a substantially rectangular outer frame 20 and is designed to be equal to the outer diameter (area) of the seat frame 4. Yes. Since the central portion of the seat plate 2 is the mesh 21, the seat plate 2 has an appropriate flexibility as well as good air permeability, and the sitting comfort is improved. On the front side of the central opening of the outer frame 20, two layers of meshes 21 are stretched up and down so as to withstand a large load from the thigh of the seated person (see FIG. 5). The outer frame 20 is not particularly limited as long as it has rigidity that can withstand at least the load of the seated person. In this embodiment, the outer frame 20 is made of a synthetic resin in which glass beads are added to nylon. The mesh 21 is also made of nylon. In front of the back surface of the seat plate 2, that is, in front of the lower surface of the outer frame 20, a contact piece 22 that contacts the upper surface of the front frame 12 when the seat plate 2 is placed on the seat frame 4 is horizontally horizontal. The stopper 23 is integrally formed in the left and right center of the rear end of the contact piece 22. A rib 24 is integrally formed on the lower surface of the outer frame 20 so as to surround the central opening (see FIG. 5).

  Similarly to the seat plate 2, the back plate 3 also has a configuration in which a mesh 31 is stretched over the center opening of a substantially rectangular outer frame 30, and the outer diameter dimension (area) of the back frame 5. Designed to be equivalent. The outer frame 30 is also made of synthetic resin in which glass beads are added to nylon, and the mesh 31 is also made of nylon. The point that air permeability and flexibility are secured by the mesh 31 is the same as the seat plate 2. A flange 32 that protrudes backward is integrally formed on the upper end of the back plate 3 (outer frame 30) over both left and right ends of the back plate 3, and a protrusion that protrudes downward is formed on the lower surfaces of the left and right sides of the flange 32. 33 and 33 are integrally formed (see also FIG. 2). In addition, a fixing piece 34 for fixing the back plate 3 is integrally formed on the lower left and right central portions of the back plate 3. The fixed piece 34 extends substantially horizontally forward from the lower end of the connecting portion 35 protruding downward from the lower surface of the outer frame 30. Further, a shielding piece 36 that extends downward from the back surface of the back plate 3, that is, the outer frame 30, bulges backward from the back surface of the outer frame 30 by a predetermined amount is integrally formed across the left and right sides (FIG. 7). See also). Therefore, a gap of a predetermined dimension is formed between the connecting portion 35 of the fixed piece 34 and the shielding piece 36 (see FIG. 5). As shown well in FIG. 2, vertical ribs 37 and 37 are integrally formed on the left and right rear surfaces of the outer frame 30. The back plate 3 is formed in a streamline shape that follows the shape of the back frame 5.

  Next, an assembly procedure of the chair body 1, that is, a procedure for assembling and fixing the seat plate 2 and the back plate 3 to the seat frame 4 and the back frame 5 will be described. First, as shown in FIG. 2, the back plate 3 is slid from above the back frame 5 while sliding the ribs 37 of the back plate 3 on the inner surfaces of the back frames 15, 15 of both sides of the back frame 5. Then, the flange 32 of the back plate 3 is placed on the upper surface of the back frame 5, and the projections 33 and 33 of the flange 32 are fitted into the fitting holes 17 and 17 of the back frame 5. Then, as shown in FIG. 3, the fixing piece 34 of the back plate 3 comes into contact with the upper surface of the rear frame 11 in a state of being accommodated in the recess 13 of the rear frame 11 of the seat frame 4. At this time, the upper surface of the fixed piece 34 and the upper surface of the rear frame 11 are substantially flush or the upper surface of the fixed piece 34 is slightly lower than the upper surface of the rear frame 11. In this state, screws (fixing members) 40 and 40 are respectively placed above the fixing piece 34 in screw holes 41 and 41 for fixing the back plate 3 formed at the same positions on both the left and right sides of the fixing piece 34 and the recess 13. Then, the fixing piece 34 and the rear frame 11 are fixed. As a result, the back plate 3 is firmly fixed in the vertical direction by the protrusion 33 and the fixing piece 34. At this time, as well shown in FIGS. 6 and 7, the back plate 3 and the back frame 5 are formed in the same streamline shape, so that the back surface of the back plate 3 and the front surface of the back frame 5 are accurately provided. Touching. The rear end edge of the flange 32 and the rear surface of the upper frame 16 of the back frame 5 are flush with each other, and the left and right side surfaces of the back plate 3 and the left and right outer surfaces of the side back frames 15 and 15 of the back frame 5 are both. It is the same. Further, the shielding piece 36 of the back plate 3 reaches the lower end of the rear surface of the rear frame 11, and the rear frame 11 is shielded by the shielding piece 36. By designing each part in this way, the back plate 3 and the back frame 5 appear to be well integrated, and the design is improved.

  When the back plate 3 can be fixed to the back frame 5 as described above, the seat plate 2 is then placed on the seat frame 4 so as to cover the fixing piece 34 of the back plate 3 as shown in FIG. As a result, the fixing piece 34 of the back plate 3 and the screw 40 that fixes the fixing piece 34 are concealed by the seat plate 2, so that they are reliably avoided from being visually recognized from the outside (see also FIG. 7). When the seat plate 2 is placed on the seat frame 4, as shown in FIG. 4, the recess 25 formed on the left and right sides of the rear end of the seat plate 2 and the projection of the back plate 3 projecting to a desired position. Positioning is facilitated by placing the pieces 38 so as to be fitted. As shown in FIG. 5, when the seat plate 2 is placed on the seat frame 4, the ribs 24 are accommodated in the central opening of the seat frame 4, and the back surface of the contact piece 22 contacts the upper surface of the front frame 12. It touches. 6, the left and right side surfaces of the seat plate 2 are flush with the left and right outer surfaces of the side seat frame 10 of the seat frame 4, and the front portion of the seat plate 2 is curved downward. ing. Furthermore, the upper rear edge of the seat plate 2 and the lower front edge of the back plate 3 are formed in a curved shape having the same radius of curvature, and when the seat plate 2 is placed on the seat frame 4, the seat plate 2 and the back plate 3 has an appearance that is continuously integrated. In this state, as shown in FIG. 1, screw holes 42, 42 for fixing the back plate 3 pierced on both the left and right sides of the rear frame 11, and the screw holes 42, 42 are provided at desired positions, respectively. Screws 43 are screwed into the screw fastening bosses 28 and 28 of the seat plate 2 from the rear surface of the rear frame 11 to fix the rear portion of the seat plate 2 to the rear frame 11. Note that the rear rear surface of the outer frame 20 of the seat plate 2, that is, the surface covering the upper portion of the rear frame 11, is formed so as to be substantially flat except for the screwing boss 28. On the other hand, the screws 43 and 43 are respectively inserted into the screw holes 44 and 44 for fixing the seat plate 2 formed at the same positions on both the left and right sides of the contact piece 22 of the seat plate 2 and the front frame 12 of the seat frame 4. Screwing in from the back surface of the frame 12, the screw fastening bosses 26 and 26 of the contact piece 22 and the front frame 12 are fixed. Thereby, the front side of the seat plate 2 is also fixed.

  As described above, according to the chair 1 of this embodiment, the back plate 3 is disposed on the back frame 5 and fixed to the seat frame 4, and then the seat plate 2 is fixed to the seat frame 4. Since the fixing piece 34 and the screw 40 can be reliably concealed, the assembling work is easy, and the design is dramatically improved while the number of parts is reduced.

(Example 2)
In FIG. 8, the principal part expanded sectional view centering on the fixed piece 34 in the chair main body 1 which concerns on Example 2 of this invention is shown. The second embodiment is a modification of the first embodiment. In the first embodiment, the fixing piece 34 is fixed separately from the seat plate 2 with the dedicated screw 40, but the fixing piece 34 is not necessarily fixed to the rear frame 11. Specifically, as shown in FIG. 8, in the second embodiment, a pressing portion 29 is formed to bulge downward on a portion of the back surface of the seat plate 2 that faces the fixed piece 34 of the back plate 3. Thereby, when the seat plate 2 is placed on the seat frame 4, the pressing portion 29 is formed so as to be in contact with the upper surface of the fixed piece 34. When the seat plate 2 is fixed to the rear frame 11 of the seat frame 4 in the left and right screw holes 42 and 42, the pressing portion 29 of the seat plate 2 is pressed so that the fixing piece 34 is pressed by the fastening force of the screws 43. To do. Thereby, the fixing piece 34 is securely fixed, so that the back plate 3 does not come off the back frame 5. Further, since the back plate 3 is inevitably fixed only by fixing the seat plate 2 to the rear frame 11, it is not necessary to prepare screws for fixing the back plate 3, and the assembling work can be simplified. Therefore, in the second embodiment, the screw hole 41 for fixing the fixing piece 34 in the first embodiment is not necessary. The other parts are the same as those in the first embodiment, and the same members are denoted by the same reference numerals and the description thereof is omitted.

(Example 3)
In FIG. 9, the principal part expanded sectional view centering on the fixed piece 34 in the chair main body 1 which concerns on Example 3 of this invention is shown. The third embodiment is a modification of the second embodiment. In the previous Example 2, the fixing piece 34 was fixed by the pressing portion 29 using the fastening force when the seat plate 2 was fixed to the rear frame 11 in the left and right screw holes 42 and 42. The seat plate 2 can also be fixed at the pressing portion 29 portion. Specifically, as shown in FIG. 9, in the third embodiment, screw holes (holes corresponding to the screw holes 42 in the first and second embodiments) are not provided on the left and right sides of the seat plate 2. Instead, a screw hole 46 for fixing the seat plate 2 is formed in the pressing portion 29 at the center of the rear left and right of the seat plate 2. Then, the seat plate 2 is placed on the seat frame 4, and the screw holes 41 of the rear frame 11 and the fixing piece 34 and the screws of the pressing part 29 are placed in a state where the rear back surface of the pressing part 29 is in contact with the fixing piece 34. The seat plate 2 and the back plate 3 can be simultaneously fixed to the rear frame 11 by screwing the screw 43 into the hole 46 from below the rear frame 11. Thereby, the fixing piece 34 is fixed similarly to the first embodiment. That is, in Example 3, the screw (fixing member) 43 is configured to serve as both fixing of the seat plate 2 and the rear frame 11 and fixing of the back plate 3 and the rear frame 11. Specifically, the screw (fixing member) 40 for fixing only the back plate 3 is not used, and when the seat plate 2 is fixed to the rear frame 11 by the screw (fixing member) 43 for fixing the seat plate 2, The fixed piece 34 of the plate 3 is also fixed to the rear frame 11. With such a configuration, both the seat plate 2 and the back plate 3 can be securely fixed while reducing the number of parts, and the assembly work is facilitated.

(Other variations)
In the above-described embodiment, the seat plate and the back plate are made of nylon, but other synthetic resins may be used as long as they have at least rigidity capable of withstanding the load of the seated person. Moreover, not only a synthetic resin but it can also be made of wood or metal. Further, the mesh is not necessarily required, and a single plate may be used. At this time, it is preferable that the shape is appropriately matched to the sitting posture. It is also preferable to have moderate flexibility. The legs and frame are not limited to wood, but can be made of synthetic resin or metal. At this time, the leg, the seat frame, and the back frame may be separate from each other.

  In the above embodiment, the seat frame has a square frame shape with an opening at the center. However, the front frame of the seat frame may not be provided on the assumption that the seat plate has sufficient strength. The seat plate can also be fixed at the left and right side seat frame portions. The back frame also has a square frame shape with an opening at the center, but on the premise that the back plate has sufficient strength, an upper frame is arranged, or a vertical frame is erected at the center of the left and right. It is also possible to use a vertical frame. When there is one vertical frame, it is preferable that the vertical frame has an appropriate left-right width dimension. In addition to the seat frame and the back frame having a frame shape, the seat frame and the back frame itself may be a single plate. In this case, it is not necessary to provide ribs on the back surface of the seat plate and the back plate.

It is an exploded perspective view of a chair book and others. It is a principal part enlarged view of the state which distribute | arranges a backplate to a back frame. It is a front perspective view of the state where the back board was fixed to the back frame. It is a principal part enlarged view of the state which distributes a seat board to a seat frame. It is a vertical side view of a chair body. It is a front perspective view of a chair body. It is a back perspective view of a chair body. It is a principal part expansion vertical side view of the chair main body of Example 2. FIG. It is a principal part expansion vertical side view of the chair main body of Example 3. FIG.

Explanation of symbols

1 Chair body 2 Seat plate 3 Back plate 4 Seat frame 5 Back frame 6 Leg 10 Side seat frame 11 Rear frame 12 Front frame 13 Recess 15 Side back frame 16 Upper frame 17 Fitting hole 20 Outer frame 21 Mesh 22 Contact piece 29 Press part 30 Outer frame 31 Mesh 32 Flange 33 Protrusion 34 Fixing piece 36 Shielding piece 40 Fixing piece fixing screw 41 Fixing piece fixing screw hole 42 Seat plate rear fixing screw hole 43 Seat plate fixing screw 46 Press Screw hole

Claims (5)

A seat plate, a back plate, a seat frame that supports the seat plate, and a back frame that stands from the rear end of the seat frame and supports the back plate;
The seat frame has left and right side frames, and a rear frame constructed between the side frames at the rear ends of the left and right side frames,
In a state where the back plate is arranged on the back frame, a fixing piece that contacts the upper surface of the rear frame of the seat frame is provided on the lower surface of the back plate,
After the back plate is arranged on the back frame, the seat plate is placed on the seat frame so as to cover a fixed piece of the back plate, and the seat plate is fixed to the seat frame at least in the rear frame by a fixing member. The chair is fixed, and the fixing member is fixed from the back side of the seat frame.   The chair according to claim 1, wherein a fixing piece of the back plate and a rear frame of the seat frame are fixed by a fixing member different from a fixing member for fixing the seat plate and the rear frame.   The chair according to claim 2, wherein a fixing member that fixes the fixing piece to the rear frame is fixed from above the fixing piece. A flange protruding rearward is formed on the upper end of the back plate, and a protrusion protruding downward is provided on the lower surface of the flange.
A fitting hole is drilled in the upper surface of the back frame,
The flange of the said back plate contacts the upper surface of a back frame when the said back plate is distribute | arranged to a back frame, The protrusion of the said flange is fitting with the fitting hole of the back frame. A chair according to any one. The chair according to any one of claims 1 to 4, wherein a recessed portion in which the fixed piece is accommodated is formed in a portion of the rear frame of the seat frame that contacts the fixed piece of the back plate.

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