JP2009178368A - Chair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the body support from detaching inadvertently while securing easiness of the mounting/removing of the body support. <P>SOLUTION: A body support 2 with a base material for supporting a sitting person is arranged separably from a part 1 to be attached which is supported at leg 32 side, and detachably fixed by a buckle mechanism 3, applying the body support 2 to the part 1 to be attached. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a chair. More specifically, the present invention relates to a chair that can be attached and detached with a single touch of a body support such as a seat or a back.

  As a chair that enables replacement of the back and seat cushions, for example, there is a chair described in Japanese Patent Application Laid-Open No. 2003-225139. The chair back attachment structure is shown in FIGS. On the upper back surface of the back cushion body 101, a bag-shaped skin member 102 opening inward and a support plate 104 provided with inward engagement claws 103 are provided. Further, a support plate 106 having a headed shaft 105 protruding is provided on the lower back surface of the cushion body 101. On the other hand, an outward engaging claw 108 that can engage with the engaging claw 103 is provided on the upper portion of the shell 107 of the backrest, and a locking hole 109 that removably locks the headed shaft 105 is provided on the lower portion. Yes.

  As shown in FIG. 23, the locking hole 109 is a harpoon-shaped hole composed of a large-diameter portion and a small-diameter portion, and the headed shaft 105 is inserted into the large-diameter portion while pulling the cushion body 101 downward by hand. Thereafter, the headed shaft 105 is released from the locking hole 109 by releasing the hand and moving the headed shaft 105 to the small diameter portion.

  The cushion-like skin member 102 of the cushion body 101 is put on the upper portion of the shell 107 and the engaging claws 108 and 103 are engaged with each other, and the headed shaft 105 is fitted into the locking hole 109 so that the cushion body 101 is fitted. Is removably attached to the shell 107.

  Moreover, such a mounting structure is applicable not only to the back but also to the seat.

JP 2003-225139 A

  However, in the above-described chair, the cushion body 101 is fixed to the shell 107 by inserting the headed shaft 105 provided at the lower portion of the cushion body 101 into the locking hole 109. Can not be fixed too strongly. For example, when the chair is lifted by grabbing the cushion body 101 for transportation, the headed shaft 105 moves from the small diameter portion of the locking hole 109 to the large diameter portion due to its weight, and the cushion body 101 is removed. There is a risk that the shell 107 may come off.

  An object of the present invention is to provide a chair in which the body support is not accidentally detached while ensuring the ease of attachment / detachment of the body support.

  In order to achieve such an object, the chair according to claim 1 is provided with a body support that has a base material and supports a seated person so as to be separable from the attached portion supported on the leg side, and the body supported on the attached portion. The body is placed and fixed removably by a buckle mechanism. Therefore, the body support can be attached to or detached from the attached portion with a single operation by operating the buckle mechanism.

  Further, in the chair according to claim 2, the buckle mechanism includes a swinging body provided on one of the body support and the attached portion, and a swinging of a locking part of the swinging body provided on the other. The protrusion has a protrusion protruding on the trajectory, and the swinging body is tilted and the locking part fits into the protrusion, so that the swinging body is prevented from standing up and fixed, and the swinging body is raised in a direction different from the removing direction. Then, the locking portion is released from the protrusion, so that the fixing is released. Therefore, when the swinging body of the buckle mechanism is tilted in a state where the body support is applied to the attached portion, the locking part of the swinging body gets over the protrusion and prevents the swinging body from returning. In this state, the body support body is fixed to the attached portion by the buckle mechanism. Then, when the swinging body of the buckle mechanism is raised and the locking portion is removed from the protrusion, the restraint of the body support body by the buckle mechanism is released and the body becomes free. In this state, the body support can be exchanged.

  According to a third aspect of the present invention, in the chair according to the third aspect, the buckle mechanism swings on the swinging body provided on one of the body support body and the attached portion, on the protrusion provided on the other side, and on the swinging body. A hook member that is freely provided and can be hooked on the protrusion, and is fixed when the swinging body falls over the thought point in a state where the hook member is hooked on the protrusion, and the swinging body indicates the thought point. If it is raised in a direction different from the removing direction, the hook member comes off the protrusion and the fixation is released. Therefore, when the hooking member of the buckle mechanism is hooked on the protrusion and the swinging body is tilted with the body support applied to the attached part, the hooking member tightens the protrusion and the body support is fixed to the attached part. Is done. In this state, the rocking body of the buckle mechanism has exceeded the thought point, and the rocking body will not exceed the thought point unless the release operation is performed. Then, when the swinging member of the buckle mechanism is released and raised, and the hooking member is removed from the protrusion, the body support body by the buckle mechanism is released and becomes free. In this state, the body support can be exchanged.

  Further, as in the chair according to claim 4, the body support is preferably a seat, and as in the chair according to claim 5, a storage space with the body support as a lid is provided inside the attached portion. More preferably, it is.

  Moreover, it is preferable that a body support body is a back like the chair of Claim 6.

  In the chair according to claim 1, since the body support having the base material is made independent and the body support is fixed to the attached portion by the buckle mechanism, the body support can be easily fixed by one-touch operation. The body support can be easily exchanged. In addition, the buckle mechanism is fixed, and even if a strong force acts in the direction of removing the body support from the attached portion, the buckle mechanism does not come off and the body support is not released. For this reason, the usability of the chair is not impaired. That is, both ease of replacement of the body support and ease of use of the chair can be achieved.

  As described above, since the body support can be easily replaced, the body support can be easily replaced even by an end user who is not a chair specialist. Accordingly, the size and shape of the body support, the thickness and hardness of the cushion material, and the like can be changed by the end user or the like as desired. In addition, the body support can be easily replaced for the purpose of replacement when dirty, replacement according to the season, etc., replacement for design harmony with the indoor space, and the like. In addition, the shortest component of the chair is the body support, which can be used without discarding the chair by replacing the body support alone, so the amount of waste can be reduced and the environment can be reduced. The problem can be addressed. Furthermore, it is possible to take an unprecedented method for selling a chair, such as selling a body support alone.

  In the chairs according to claims 2 and 3, the body support can be easily fixed and released by operating the swinging body, so that the body support can be easily replaced.

  In the chair according to claim 4, the seat can be easily exchanged. And in the chair of Claim 5, since accessories etc. can be cleared in the storage space inside a to-be-attached part, the usability of a chair can be improved. And it can be used like a normal chair by fixing the body support body used as the cover of a storage space to a to-be-attached part.

  Further, in the chair according to the sixth aspect, the back can be easily replaced.

  Hereinafter, the configuration of the present invention will be described in detail based on the best mode shown in the drawings.

  An example of embodiment of the chair of this invention is shown in FIGS. The chair is provided with a body support 2 that has a base material 34 and supports a seated person so as to be separable from the attached portion 1 supported on the leg 32 side, and the body support 2 is applied to the attached portion 1 to buckle mechanism 3. It is fixed so as to be removable.

  The body support 2 supports the body of the seated person, for example, a seat, a back, an armrest, a headrest, a footrest, etc., and any one of these may be applied, or two or more may be applied. May be. In this embodiment, a case where the present invention is applied to both a seat and a back will be described as an example. The attached portion 1 is supported on the leg 32 side to support the body support 2. When the body support 2 is a seat, for example, a seat such as a seat receiving member or an outer shell is attached. When the body support body 2 is a back, for example, a back frame, a back support rod or the like is attached and supported. When the body support body 2 is an armrest, an armrest such as a frame is attached. If the body support 2 is a headrest, a headrest such as a frame is attached and supported. If the body support 2 is a footrest, a footrest such as a frame is attached and supported. It is a member to do.

  First, application to the seat will be described. The body support 2 as a seat has a base material 34 and has an independent configuration that is separable from the mounted portion 1 while maintaining the shape as the body support 2. The base material 34 here is the inner shell 7 a of the seat body 7. The attached portion 1 is an outer shell.

  As shown in FIGS. 3 to 5, for example, the buckle mechanism 3 includes an oscillating body 4 provided on one of the body support 2 and the attached portion 1, and an oscillating body 4 provided on either one of the oscillating body 4. The protrusion 5 protrudes on the swinging locus of the locking part 4a, and the swinging body 4 is tilted so that the locking part 4a fits into the protrusion 5, thereby preventing the swinging body 4 from standing and fixing. The body support 2 is unfixed by being raised in a direction Y different from the direction X from which the rocking body 4 is removed and the locking portion 4a is removed from the protrusion 5. In the present embodiment, the rocking body 4 is attached to the attached portion 1, and the protrusion 5 is provided on the body support 2. However, the protrusion 5 may be provided on the attached portion 1 and the rocking body 4 may be attached to the body support 2.

  For example, one buckle mechanism 3 is provided on each of the side surfaces 1 a of the attached portion 1. However, the number of buckle mechanisms 3 is not limited to one for each side surface 1a, and a plurality of buckle mechanisms 3 may be provided for each side surface 1a. Further, the buckle mechanism 3 may be provided only on one side surface 1a, and the other side surface 1a or the vicinity thereof may be hooked and fixed by, for example, a hook. Furthermore, the buckle mechanism 3 may be provided at other positions, for example, the front surface and the rear surface, instead of the side surface 1a.

  The oscillating body 4 includes, for example, an operation plate 4b provided with a locking portion 4a at an upper edge and side plates 4c and 4c (only one of them is shown) provided on both sides of the operation plate 4b. The locking portion 4a protrudes toward the inside of the chair. The oscillating body 4 is integrally formed of, for example, resin, and can be elastically deformed to such an extent that the locking portion 4a can get over the protrusion 5. Each side plate 4c is arranged so as to sandwich the bulging portion 33 provided on the side surface 1a of the attached portion 1 from both sides, and the lower portion of each side plate 4c is swingable by the shaft 6 on the side surface 33a of the bulging portion 33. It is attached.

  The body support 2 is composed of, for example, a seat body 7 in which a cushion material 7b is overlapped with an inner shell 7a as a base material 34 and covered with an outer skin member 7c, and a mounting member 8 attached to the bottom surface of the seat body 7. . The mounting member 8 is mounted, for example, so as to cover the attached portion 1, and both side plates 8 a of the mounting member 8 are formed with stepped portions 8 b protruding in the width direction of the chair. The step portion 8 b is formed so as to cover the bulging portion 33. The corner of the stepped portion 8 b is a protrusion 5 that protrudes on the swing locus of the locking portion 4 a of the swing body 4. A stopper 8c is provided on the step portion 8b.

  Next, fixation of the body support 2 to the attached portion 1 and release of the fixation will be described. Note that swinging the swing body 4 in the direction of tightening the buckle mechanism 3 is referred to as tilting, and causing the swing body 4 to swing in the direction of removing the buckle mechanism 3 is referred to.

  As shown in FIG. 4, with the swinging body 4 of the left and right buckle mechanisms 3 raised, the mounting member 8 of the body support 2 is placed on the attached portion 1. Then, as shown in FIG. 5, when the oscillating body 4 is tilted toward the protrusion 5, that is, when the oscillating body 4 is oscillated from the bottom to the top in this embodiment, the locking portion 4a of the oscillating body 4 is moved. It gets over the protrusion 5 and hits the stopper 8c, and is fitted and fastened between the protrusion 5 and the stopper 8c. Thereby, the buckle mechanism 3 fixes the body support body 2 to the to-be-attached part 1. FIG. Thus, the body support body 2 can be fixed with one touch.

  The locking portion 4a of the swinging body 4 has moved over the protrusion 5 from the width direction of the chair. In order to raise the swinging body 4, the swinging body 4 is moved in the width direction of the chair, that is, from the mounted portion 1 to the body support body. 2 needs to be swung in a direction Y different from the direction X in which 2 is removed. For this reason, the oscillating body 4 cannot be oscillated even if an upward force is applied to the locking portion 4a. That is, even if the seat body 7 is grasped and lifted, the buckle mechanism 3 is not unintentionally released. In particular, in this embodiment, the direction in which the swinging body 4 is raised is opposite to the direction in which the hand is inserted under the seat body 7, and the buckle mechanism 3 is not intended to be fixed when the seat body 7 is gripped and lifted. It is difficult to be released.

  The body support 2 is fixed by the buckle mechanism 3, and the body support 2 can be firmly fixed. In particular, in the present embodiment, the body support 2 is fixed more firmly because the fixing is performed by holding the step portion 8b by the rocking body 4.

  In order to release the fixation by the buckle mechanism 3, the swinging body 4 may be swung to the outside in the width direction of the chair. By raising the oscillating body 4, the locking part 4 a gets over the protrusion 5 and comes off, and the fixation of the body support body 2 can be released by a one-touch operation.

  Next, application to the back will be described. The body support 2 as the back has a base material 34 and has an independent structure that is separable from the mounted portion 1 while maintaining the shape as the body support 2. Here, the base material 34 is the core material 12. The attached portion 1 is a back frame. Even in the buckle mechanism 3 in this case, the swinging body 4 is attached to the attached portion 1 and the protrusion 5 is provided on the body support 2. However, the protrusion 5 is provided on the attached portion 1 and the body support 2 is swung. The moving body 4 may be attached.

  One buckle mechanism 3 is provided, for example, at the center of the lower end of the attached portion 1. However, the number of buckle mechanisms 3 is not limited to one, and a plurality of buckle mechanisms 3 may be provided. Further, the position where the buckle mechanism 3 is provided is not limited to the center of the lower end of the attached portion 1 and may be provided at other positions.

  For example, as shown in FIGS. 6 to 8, the oscillating body 4 includes a plate-like locking portion 4 a and side plates 4 c and 4 c (only one of which is shown) provided at both ends of the locking portion 4 a. . The oscillating body 4 is integrally formed of, for example, resin, and can be elastically deformed to such an extent that the locking portion 4a can get over the protrusion 5. The upper part of each side plate 4 c is swingably attached to the attached portion 1 by a shaft 6. Both ends of the shaft 6 are supported so as not to be disengaged by, for example, a convex portion 10 provided on the rear surface of the attached portion 1.

  The body support 2 that is the back of the chair is formed by overlapping the cushion material 11 on the core material 12 as the base material 34 and covering it with the skin member 13. The elastic body 14 is fixed by a blind rivet 15, for example. The lower end of the plate-like elastic body 14 is rounded rearward to form a recess 14 a that fits into the lower end of the back frame that is the attached portion 1. The lower end of the recess 14 a is a protrusion 5 that protrudes on the swing locus of the locking portion 4 a of the swing body 4.

  In the present embodiment, the buckle mechanism 3 fixes the lower part of the body support 2. For example, as shown in FIG. 9, the upper portion of the body support 2 forms a bag-like portion 13 a on the skin member 13, and covers the upper portion of the attached portion 1 to enable one-touch attachment and removal.

  Next, fixation of the body support 2 to the attached portion 1 and release of the fixation will be described. First, as shown in FIG. 9, the body support 2 is overlaid on the front surface of the attached portion 1 while the bag-like portion 13 a of the skin member 13 is placed on the upper portion of the attached portion 1, and the plate-like elastic body 14 is elastically elastic. The deformed portion 14a is fitted into the lower end of the attached portion 1 (FIGS. 7 and 8). Then, as shown in FIG. 6, the oscillating body 4 is tilted toward the protruding portion 5 so that the locking portion 4 a is fitted into the protruding portion 5. Thereby, the buckle mechanism 3 fixes the lower part of the body support body 2 to the to-be-attached part 1. FIG. Thus, the lower part of the body support body 2 can be fixed by simple operation. Moreover, as for the attachment structure of the whole body support 2, the upper part only covers the bag-like part 13a on the attachment part 1, and the lower part is fixed by the buckle mechanism 3, so that the body support 2 can be covered very easily. It can be fixed to the mounting portion 1.

  Since the upper part of the body support 2 is fixed by covering the attached part 1 with the bag-like part 13a, the upper part does not come off unless the lower buckle mechanism 3 is removed.

  The locking portion 4a of the swinging body 4 is fitted into the protrusion 5 from the rear side of the chair, and in order to raise the swinging body 4, the swinging body 4 faces backward, that is, the body support body 2 is mounted from the mounted portion 1. It is necessary to swing in a direction Y different from the direction X to be removed. For this reason, even if a forward force or an upward force is applied to the locking portion 4a, the rocking body 4 cannot be rocked. That is, even if the lower part of the body support 2 is grasped from the rear side of the chair and the chair is lifted, the buckle mechanism 3 is not unintentionally released. In particular, in the present embodiment, the concave portion 14a of the plate-like elastic body 14 is structured to be fitted to the lower end of the attached portion 1 from the front side, and in order to remove the concave portion 14a of the plate-like elastic body 14 from the attached portion 1, a plate shape It is necessary to apply a forward force to the elastic body 14, and this forward force becomes a force in a direction in which the locking portion 4a of the oscillating body 4 is further pressed against the protrusion 5, and unintentional unlocking is more unlikely to occur. Yes. In addition, when inserting a hand under the back due to the presence of the seat, it is common to insert from the rear side of the chair, and the insertion from the rear side is the direction opposite to the direction in which the rocking body 4 is raised. Therefore, it is difficult for the buckle mechanism 3 to be unintentionally released.

  The body support 2 is fixed by the buckle mechanism 3, and the body support 2 can be firmly fixed.

  In order to release the fixation by the buckle mechanism 3, the swinging body 4 is swung in the backward direction of the chair, and then the recess 14 a is removed from the lower end of the mounted portion 1 while elastically deforming the plate-like elastic body 14. It ’s fine. Thus, the fixation of the body support 2 can be released by a simple operation. Thereafter, the body support 2 can be easily removed by lifting the body support 2 and removing the bag-like portion 13a from the upper portion of the attached portion 1.

  In the chair of the present invention, the body support 2 such as the seat and the back can be attached / removed very easily, so that, for example, the end user can easily replace the body support 2. In addition, since the buckle mechanism 3 that is generally used in daily life is used, even a person who does not know how to operate intuitively knows how to operate, and provides a chair that is easy to understand and easy to use. be able to.

  For example, by preparing a well-ventilated body for summer and a warm one for winter as the body support 2, the body support 2 is exchanged according to the change of the season, and the chair is comfortable throughout the year. Can be used. In addition, by preparing a plurality of body supports 2 with different colors, shapes, designs, sizes, materials, etc., the body supports 2 can be exchanged according to the atmosphere or mood of the office, for example. be able to.

  Among the constituent members of the chair, the body support 2 is most likely to be dirty and easily damaged, so that it tends to fail first. In the chair of the present invention, the body support 2 can be easily exchanged. Therefore, only the failed body support 2 can be exchanged, and the chair can be used for a long time by the exchange. Therefore, it is possible to provide a chair that can reduce waste, provide an environmentally friendly chair, and can continue to be used at low cost.

  As the chair, for example, an office chair, a learning chair, a home chair, a dining table chair, a rotating chair, a fixed chair, a theater chair, and a vehicle chair can be applied to all chairs.

  The above-described embodiment is an example of a preferred embodiment of the present invention, but is not limited thereto, and various modifications can be made without departing from the scope of the present invention.

  For example, in the above description, the oscillating body 4 of the buckle mechanism 3 is a separate member from the attached portion 1 or the body support 2, but the oscillating body 4 is integrally formed with the attached portion 1 or the body support 2. Also good. In this case, the base portion of the rocking body 4 is, for example, a resin hinge, and the rocking body 4 is folded back so that the locking portion 4a is fitted on the back side of the protrusion 5 provided on the attached portion 1 or the body support body 2. Thus, the body support 2 can be fixed to the attached portion 1.

  Also, as shown in FIGS. 10 and 11, the rocking body 4 of the buckle mechanism 3 is formed into a plate-like shape, and is folded back so that the locking portion 4a is fitted to the back side of the projection 5, and the body support body 2 is covered. You may make it fix to the attaching part 1. FIG. In this example, the oscillating body 4 is provided on the body support 2 and the protrusion 5 is provided on the attached portion 1. On the contrary, the protrusion 5 is provided on the body support 2 and the oscillating body is provided on the attached portion 1. 4 may be provided. Further, the locking portion 4a is formed by providing the swing body 4 with the slit 31 through which the protrusion 5 is passed.

  Further, the buckle mechanism 3 is not limited to the above. The buckle mechanism 3 is provided, for example, in a swingable manner on the swinging body 4 provided on one of the body support 2 and the attached portion 1, a protrusion 5 provided on the other, and the swinging body 4. And a hook member 17 that can be hooked on the protrusion 5, and when the swinging member 4 is tilted over the thought point T in a state where the hook member 17 is hooked on the protrusion 5, the swinging member 4 is fixed. The hook member 17 may be detached from the protrusion 5 and released from being fixed when it is raised in the direction Y different from the direction X to be removed beyond the thought point T.

  Examples of this case are shown in FIGS. The swing body 4 is attached to the body support 2 so as to be swingable, for example. The protrusion 5 is provided, for example, on the attached portion 1. For example, a groove 16 is provided on a surface 5 a of the protrusion 5 on the side opposite to the rocking body 4. The hook member 17 has a loop shape and is swingably connected to the swing body 4.

  When the buckle mechanism 3 is fastened and fixed, as shown in FIG. 14, the body support 2 is placed on the attached portion 1 with the swinging body 4 of the buckle mechanism 3 raised. Then, as shown in FIG. 12, the loop portion of the hook member 17 is hooked on the groove 16 of the protrusion 5 to tilt the oscillator 4. Thereby, the hooking member 17 draws the protrusion 5 relatively toward the swinging body 4. Since the oscillating body 4 oscillates beyond the thought point T, the oscillating body 4 does not get up unless a release operation is performed. Thereby, the buckle mechanism 3 fixes the body support body 2 to the to-be-attached part 1. FIG. That is, the body support 2 can be easily fixed.

  Even in this buckle mechanism 3, in order to raise the swinging body 4, it is necessary to swing the swinging body 4 in a direction Y different from the direction X in which the body support 2 is removed from the attached portion 1. Even if it is grabbed and lifted, the buckle mechanism 3 is not unintentionally released. The body support 2 is fixed by the buckle mechanism 3, and the body support 2 can be firmly fixed in the same manner as the buckle mechanism 3 described above.

  In order to release the fixation by the buckle mechanism 3, the swinging body 4 may be swung to the outside in the width direction of the chair. When the swinging body 4 swings beyond the thought point T, the hooking member 17 comes off from the projection 5 and the fixation of the body support 2 can be released by a one-touch operation.

  Further, the buckle mechanism 3 may be of an insertion type as shown in FIG. The buckle mechanism 3 includes an engagement convex portion 22 provided on one of the body support body 2 and the attached portion 1, and an engagement concave portion provided on either one of the engagement convex portion 22 to be engaged. 23. In the present embodiment, the engagement convex portion 22 is provided on the body support 2, and the engagement concave portion 23 is provided on the attached portion 1. However, the engagement convex portion 22 may be provided on the attached portion 1, and the engagement concave portion 23 may be provided on the body support 2.

  The engaging convex portion 22 is provided at the tip of the elastic arm 24, for example, and the engaging convex portion 22 is provided on the body support 2 by connecting the elastic arm 24 to the body support 2 with a belt 25, for example. . In the present embodiment, the two engaging convex portions 22 are provided in opposite directions by forming the engaging convex portions 22 at the tips of the two elastic arms 24. However, the number of engaging convex portions 22 is not limited to two, and may be one or three or more. Moreover, it is not necessary to make the direction of the two engagement convex parts 22 opposite. The elastic arm 24 is formed with an operation convex portion 24a that is pushed in when elastically deforming. The engagement recess 23 is provided corresponding to the engagement protrusion 22, and is provided, for example, on both side plates 26 a of the box body 26. The engaging recess 23 is provided in the mounted portion 1 by connecting the box body 26 to the mounted portion 1 by, for example, a belt 27.

  When the body support 2 is fixed to the attached portion 1, the two elastic arms 24 may be inserted into the box 26. The distal end surface of the elastic arm 24 is a tapered surface 24b, and the two elastic arms 24 are elastically deformed in a direction of narrowing the interval by being inserted into the box 26. When the engaging convex portion 22 faces the engaging concave portion 23, the interval between the two elastic arms 24 is widened, and the engaging convex portion 22 is fitted into the engaging concave portion 23. Thereby, the elastic arm 24 and the box 26 are firmly connected, and the body support 2 is fixed to the attached portion 1.

  When releasing the fixation of the body support body 2, the operation protrusions 24 a are pushed in (release operation) in the direction of narrowing the interval between the two elastic arms 24 to release the engagement protrusions 22 from the engagement recesses 23. In this state, the elastic arm 24 is pulled out from the box 26. Thereby, the connection between the elastic arm 24 and the box 26 is released, and the fixation of the body support 2 is released.

  Even in this buckle mechanism 3, in order to release the fixation of the body support 2, it is necessary to elastically deform the elastic arm 24 in a direction Y different from the direction X in which the body support 2 is removed from the attached portion 1. Even if the support 2 is grasped and lifted, the buckle mechanism 3 is not unintentionally released. The body support 2 is fixed by the buckle mechanism 3, and the body support 2 can be firmly fixed in the same manner as the buckle mechanism 3 described above.

  In the above description, when applied to the back, the body support 2 is fixed to the attached portion 1 by the combination of the bag-like portion 13a and the buckle mechanism 3, but as in the case of applying to the seat, The back may be fixed by a plurality of buckle mechanisms 3 instead of using the bag-like portion 13a.

  Further, in the above description, when applied to the seat, it is fixed by a plurality of buckle mechanisms 3. However, as in the case of application to the back, it is fixed by a combination of the bag-like portion 13a and the buckle mechanism 3. May be.

  Further, a hook positioning mechanism (hook) 28 may be used instead of the bag-like portion 13a. For example, as shown in FIG. 16, the hook positioning mechanism 28 includes a hook member 29 provided on one of the attached portion 1 and the body support 2 and a stop member 30 provided on the other. Yes. In the present embodiment, a stop member 30 is provided on the attached portion 1, and a hook member 29 is provided on the body support 2. However, the hook member 29 may be provided on the attached portion 1 and the stop member 30 may be provided on the body support 2. When the buckle mechanism 3 is tightened while the hook member 29 is hooked on the stop member 30, the body support 2 can be fixed to the attached portion 1.

  For example, when the hook positioning mechanism 28 is used for fixing the seat, for example, the front portion of the body support 2 is positioned by the hook positioning mechanism 28, and the rear portion of the body support 2 is fixed by the buckle mechanism 3, or It is conceivable that the rear part of the body support 2 is hooked and positioned by the positioning mechanism 28 and the front part of the body support 2 is fixed by the buckle mechanism 3. In these cases, for example, it is conceivable that one center of the front or rear part of the body support 2 is positioned by the hook positioning mechanism 28 and two sides of the rear or front part of the body support 2 are fixed by the buckle mechanism 3. It is done. The same applies when applied to the back instead of being applied to the seat.

  Moreover, when applying to a seat, you may provide the storage space 18 which made the body support body 2 the lid in the to-be-attached part 1. FIG. An example of the storage space 18 is shown by a two-dot chain line in FIG. By providing the storage space 18, for example, small items can be cleaned up, and the usability of the chair can be improved. Moreover, by fixing the body support 2 serving as a lid of the storage space 18 to the attached portion 1, it can be used in the same manner as a normal chair, and the usability as a chair is not impaired.

  Further, a front / rear position adjusting mechanism may be provided so that the attachment position of the body support 2 can be adjusted front / rear. Examples of application to the seat are shown in FIGS. However, it may be applied to the back, armrest, headrest, footrest and the like. The width W of the step portion 8b of the mounting member 8 is shorter than the interval L between the side members 4f of the swing body 4 of the buckle mechanism 3, and the position of the step portion 8b is adjusted back and forth between the side members 4f. It is possible. Further, an engagement convex portion 19 is provided on the bottom surface of the mounting member 8.

  The attached portion 1 of the present embodiment is a frame plate provided separately from the outer shell 20, for example. The frame plate is fixed to the legs 32, and the extending portions 1b (only one is shown) on both sides are located outside the outer shell 20. The rocking body 4 of the buckle mechanism 3 has a shape in which, for example, a rod-shaped side member 4f, 4f spans a rod-shaped locking portion 4a, and is swingably attached to both side surfaces of the extending portion 1b. . An engagement slit 21 is provided at a position facing the engagement convex portion 19 of the mounted portion 1. The number of engagement slits 21 is the same as the number of adjustment steps in the front-rear position of the body support 2. That is, a plurality of engagement slits 21 are provided side by side. In the present embodiment, since the position of the body support 2 can be adjusted in two stages, front and rear, the engagement portion 21 is provided with two engagement slits 21 side by side. However, the number of stages of position adjustment is not limited to two, but may be three or four or more.

  When the body support 2 is attached to the front portion with respect to the attachment portion 1, the mounting member 8 is placed on the attachment portion 1 while the engagement convex portion 19 is inserted into the front engagement slit 21. . As a result, as shown by the solid line in FIG. 19, the stepped portion 8b overlaps the front side of the extending portion 1b. In this state, when the swinging body 4 of the buckle mechanism 3 is lifted and tilted, the locking part 4a of the swinging body 4 gets over the protrusion 5 and sandwiches the stepped part 8b between the extension part 1b. Thereby, the buckle mechanism 3 fixes the body support body 2 to the to-be-attached part 1. FIG. That is, the body support 2 can be fixed with one touch. Even in this buckle mechanism 3, the buckle mechanism 3 is not unintentionally detached even if the seat body 7 is grasped and lifted, and the buckle mechanism 3 is not easily detached due to the direction in which the hand is put under the seat body 7. As with the chair in FIG. 1, the buckle mechanism 3 can be used to fix the bag firmly.

  In order to release the fixation by the buckle mechanism 3, the swinging body 4 may be swung to the outside in the width direction of the chair. By raising the oscillating body 4, the locking part 4 a gets over the protrusion 5 and comes off, and the fixation of the body support body 2 can be released by a one-touch operation.

  When adjusting the position of the body support 2 to a rearward position, after removing the body support 2 from the attached portion 1 and reinserting the engagement protrusion 19 into the engagement slit 21 on the rear side, What is necessary is just to fix with the buckle mechanism 3. By inserting the engagement slit 21 into the rear engagement slit 21, as shown by a two-dot chain line in FIG. 19, the stepped portion 8 b overlaps with the rearward position of the extended portion 1 b, and shifts rearward as a whole. The body support 2 is fixed at the position. In this way, the position of the body support 2 can be easily adjusted.

  In addition, the body support 2 may be configured to allow wind to pass through, for example, a frame body and a mesh skin member, and a blower such as a fan may be provided on the back side of the body support 2. By exchanging the body support 2 with this ventilation structure / blower, the wind can be sent to the seated person. Therefore, by using the body support body 2 with this ventilation structure / blower in summer or the like, it is possible to prevent heat from being trapped in the contact portion between the body support body 2 and the seated person, thereby improving the sitting comfort. be able to.

It is a rear view which shows an example of embodiment of the chair of this invention. It is a side view of the chair. It is sectional drawing which follows the III-III line of FIG. It is sectional drawing which shows a mode that the buckle mechanism of FIG. 3 is fastened. FIG. 5 is a cross-sectional view illustrating a state where the buckle mechanism of FIG. 3 is tightened and continued from FIG. 4. It is sectional drawing which follows the VI-VI line of FIG. It is sectional drawing which shows a mode that the buckle mechanism of FIG. 6 is fastened. FIG. 8 is a cross-sectional view illustrating a state where the buckle mechanism of FIG. 6 is tightened and continued from FIG. 7. It is sectional drawing which shows a mode that the upper part of a body support body is attached to a to-be-attached part. It is a rear view of the rocking body which shows the 1st modification of a buckle mechanism. It is sectional drawing which shows the 1st modification of a buckle mechanism. It is a side view which shows the 2nd modification of a buckle mechanism. It is a front view sectional view of the buckle mechanism. It is a side view of the state which removed the buckle mechanism. The 3rd modification of a buckle mechanism is shown, (A) is sectional drawing of the clamped state, (B) is sectional drawing of the removed state. The hook positioning mechanism is shown, (A) is a sectional view in a removed state, and (B) is a sectional view in a state where positioning is performed. It is a perspective view which shows the to-be-attached part provided with the front-back position adjustment mechanism. It is a perspective view of the state which showed the body support provided with the back-and-forth position adjustment mechanism, and turned the body support upside down. It is a front view of a buckle mechanism in the case where a front-rear position adjustment mechanism is provided. It is sectional drawing which shows the relationship between the engagement convex part and engagement slit of a front-back position adjustment mechanism. It is sectional drawing of the state which showed the attachment structure of the back of the conventional chair, and isolate | separated the shell and the cushion body. It is the perspective view of the state which showed the attachment structure of the back of the conventional chair, and isolate | separated the shell and the cushion body. It is a figure which shows the attachment structure of the back of the conventional chair, and shows the hole which inserts a headed shaft.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Attachment part 2 Body support body 3 Buckle mechanism 4 Oscillating body 4a Locking part 5 Protrusion part 17 Hooking member 18 Storage space 32 Leg Y Direction different from the direction X which removes a body support body from an attachment part

Claims (6)

  A body support that has a base material and supports a seated person is provided so as to be separable from the attached portion supported on the leg side, and the body support is applied to the attached portion and fixed by a buckle mechanism. Characteristic chair.   The buckle mechanism includes a swinging body provided on one of the body support body and the attached portion, and a protrusion provided on the other and protruding on a swinging locus of a locking portion of the swinging body. The rocking body is tilted and the locking part is fitted into the protrusion, so that the rocking body is prevented from standing up and fixed, and the rocking body is raised in a direction different from the removing direction. The chair according to claim 1, wherein the fixing is released when the locking portion is disengaged from the protrusion.   The buckle mechanism is provided swingably on the swinging body provided on any one of the body support body and the attached portion, a protrusion provided on the other, and the swinging body, A hook member that can be hooked on a protrusion, and when the swinging body falls over the thought point in a state where the hook member is hooked on the protrusion, the fixing is performed, and the rocking body indicates the thought point. 2. The chair according to claim 1, wherein the hook member is released from the protrusion and is released from being fixed when raised in a direction different from the removing direction.   The chair according to any one of claims 1 to 3, wherein the body support is a seat.   The chair according to claim 4, wherein a storage space with the body support as a lid is provided inside the attached portion.   The chair according to any one of claims 1 to 3, wherein the body support is a back.

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