chair

Abstract

We offer chairs that pay particular attention to safety, especially around the armrests. [Solution] The chair is provided so as to intersect the back surface of the mounting portion 2Da and includes a first cover portion 2Db that covers the mating portions of the first mating portion and the second mating portion 2CD from the side, and a second cover portion 2Dc that is provided so as to face the back surface of the mounting portion 2Da and covers the first mating portion, with a groove portion Gp provided between the first cover portion 2Db and the second cover portion 2Dc, and the second mating portion 2CD is provided so as to move along the groove portion Gp.

Description

Technical Field

[0001] This disclosure relates to a chair.

Background Art

[0002] Patent Document 1 below discloses a chair configured by combining a plurality of frames.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In Patent Document 1, no special consideration is given to the safety for the fingers of the seated person, even at the part where frames are connected, particularly at a part where the hand of the seated person may touch, such as an armrest.

[0005] An object of this disclosure is to provide a chair that pays particular attention to safety around the armrest.

Means for Solving the Problems

[0008] [Figure 1] Figure 1 is a perspective view of a folding chair according to this embodiment. [Figure 2] Figure 2 is a perspective view of the armrest shown in Figure 1, viewed from the underside. [Figure 3] Figure 3 is a perspective view illustrating the configuration that defines the positional relationship between the leg portion and the armrest portion shown in Figure 1. [Modes for carrying out the invention]

[0009] This embodiment will be described below with reference to the attached drawings. To facilitate understanding of the explanation, the same reference numerals are used for identical components in each drawing whenever possible, and redundant explanations are omitted.

[0010] The folding chair 2 according to this embodiment will be described with reference to Figure 1. In Figure 1, the x, y, and z axes are defined. The x and y axes are defined along the installation surface on which the folding chair 2 is placed. The x and y axes are orthogonal to each other. The x axis is defined so that it is in the positive direction from the front end to the rear end of the folding chair 2. The y axis is defined so that it is in the positive direction from the left hand side to the right hand side when seated in the folding chair 2. The z axis is defined so that it is orthogonal to the installation surface on which the folding chair 2 is placed, as well as orthogonal to the x and y axes. In Figures 2 and 3, which will be described later, the x, y, and z axes defined in Figure 1 will also be applied.

[0011] The folding chair 2 comprises a seat 2A, a backrest 2B, a leg section 2C, and an armrest 2D. A storage area for items is provided behind the seat 2A.

[0012] The seat portion 2A is the part on which the user sits. The seat portion 2A is formed by a first frame group 2Af. The first frame group 2Af has a first frame portion 2Ap and a second frame portion 2Aq.

[0013] The first frame portion 2Ap has a rearward extension and an intersection. The rearward extension is provided in pairs along the positive x-axis direction, extending further back than the backrest portion 2B and the leg portion 2C.

[0014] The intersection is provided to connect the rear ends of a pair of rear extensions. A net member is provided so as to overlap the pair of rear extensions and the intersection. The pair of rear extensions, the intersection, and the net member form an article storage area.

[0015] The second frame portion 2Aq has forward extensions 2Aqa and 2Aqb. The main part of the seat portion 2A is formed by draping fabric over the forward extensions 2Aqa and 2Aqb.

[0016] The forward extensions 2Aqa and 2Aqb are provided to connect with a pair of rearward extensions along the x-axis.

[0017] The backrest portion 2B is the part that the user can lean their back against when seated. The backrest portion 2B is formed by the second frame group 2Bf. The main part of the backrest portion 2B is formed by draping fabric over the second frame group 2Bf. The second frame group 2Bf and the first frame group 2Af are rotatably joined by a rotating portion 2AB.

[0018] The leg portion 2C is the part that supports the seat portion 2A and the backrest portion 2B. The leg portion 2C is formed by a third frame group 2Cf. The third frame group 2Cf has a front leg frame portion 2Cfa, a rear leg frame portion 2Cfb, and a connecting frame portion 2Cfc. The upper ends of the front leg frame portion 2Cfa and the rear leg frame portion 2Cfb are rotatably joined on the side of the armrest portion 2D.

[0019] The connecting frame part 2Cfc is rotatably joined to the rear leg frame part 2Cfb in the rotating part 2ACb. The connecting frame part 2Cfc is rotatably joined to the first frame group 2Af in the rotating part 2ACa.

[0020] The armrest part 2D has a placement part 2Da and a first cover part 2Db. The placement part 2Da is a part where a user sitting on the seating surface 2A places an elbow on the surface side. A second mating part 2CD for connecting the armrest part 2D and the leg part 2C is provided. The second mating part 2CD mates with a first mating part (not shown in FIG. 1) provided on the back surface side of the placement part 2Da and is a part that connects to the leg part 2C that supports the seating surface 2A on which the seated person sits. A backrest connecting part 2BD for connecting the armrest part 2D and the backrest part 2B is provided. Therefore, the armrest part 2D is joined so as to connect the upper ends of the front leg frame part 2Cfa and the rear leg frame part 2Cfb that constitute the third frame group 2C and the second frame group 2Bf. In conjunction with the forward and backward movement of the armrest part 2D in the A direction along the x-axis, the backrest part 2B swings along the B direction around the y-axis.

[0021] Subsequently, the armrest part 2D will be further described while referring to FIG. 2. As shown in FIG. 2, the armrest part 2D has a second cover part 2Dc in addition to the placement part 2Da and the first cover part 2Db.

[0022] A part of the first cover part 2Db is provided so as to intersect the back surface of the placement part 2Da, and covers the mating part of the first mating part (not shown in FIG. 2) and the second mating part 2CD (not shown in FIG. 2) from the side (the direction along the y-axis). The second cover part 2Dc is provided so as to face the back surface of the placement part 2Da and covers the first mating part (not shown in FIG. 2) from below (the negative z-axis direction).

[0023] [[ID=I6]] A groove part Gp is provided between the first cover part 2Db and the second cover part 2Dc, and the second mating part 2CD is provided so as to move along the groove part Gp.

[0024] Next, with reference to Figure 3, the first mating portion 2Dd and the second mating portion 2CD will be explained. The first mating portion 2Dd is provided on the back surface of the mounting portion 2Da (see Figures 1 and 2). The first mating portion 2Dd has a plurality of back surface mating portions, namely the first recess 2Dda, the second recess 2Ddb, the third recess 2Ddc, and the fourth recess 2Ddd. The first recess 2Dda, the second recess 2Ddb, the third recess 2Ddc, and the fourth recess 2Ddd are arranged to be aligned along direction A, which is along the x-axis.

[0025] The second mating section 2CD has a pair of connecting plates 2CDa and a connecting rod 2CDc. The connecting rod 2CDc connects the pair of connecting plates 2CDa and selectively mates into the first recess 2Dda, the second recess 2Ddb, the third recess 2Ddc, and the fourth recess 2Ddd, respectively. The state illustrated in Figure 3 is when the connecting rod 2CDc is mated into the fourth recess 2Ddd.

[0026] Each pair of connecting plates 2CDa is provided with a rotatable connecting portion 2CDaa and a non-rotatable connecting portion 2CDab. The rotatable connecting portion 2CDaa is the part that rotatably connects the upper end of the front leg frame portion 2Cfa (see Figure 1). The non-rotatable connecting portion 2CDab is the part that fixes the upper end of the rear leg frame portion 2Cfb (see Figure 1) in two places so that it does not rotate.

[0027] As shown in Figure 3, the second cover portion 2Dc is provided so as to face the back surface of the mounting portion 2Da (see Figure 2) and covers the first mating portion 2Dd from below. The second cover portion 2Dc covers the mating portion between the first mating portion 2Dd and the second mating portion 2CD from below.

[0028] The second fitting portion 2CD has a connecting portion 2CDb that connects a pair of connecting plates 2CDa. The connecting portion 2CDb connects the pair of connecting plates 2CDa between the second cover portion 2Dc and the upper end of the rear leg frame portion 2Cfb (see Figure 1).

[0029] The embodiments have been described above with reference to specific examples. However, this disclosure is not limited to these specific examples. Modifications made to these specific examples by those skilled in the art are also included within the scope of this disclosure, as long as they retain the features of this disclosure. The elements, their arrangement, conditions, shapes, etc., of each of the aforementioned specific examples are not limited to those illustrated and can be modified as appropriate. The elements of each of the aforementioned specific examples can be combined in different ways as appropriate, as long as no technical inconsistencies arise.

[0030] [Note] Notes 1 through 6 below can be combined in any way as long as they do not contradict each other technically.

[0031] [Note 1] It is a chair, On the surface side is a resting area 2Da where the seated person rests their elbows, A first fitting portion 2Dd is provided on the back side of the mounting portion 2Da, The first fitting portion 2Dd engages with the second fitting portion 2CD, which is connected to the leg portion 2C that supports the seat portion 2A on which the sitter sits, A first cover portion 2Db is provided so as to intersect the back surface of the mounting portion 2Da and covers the mating portions of the first mating portion 2Dd and the second mating portion 2CD from the side, A second cover portion 2Dc is provided so as to face the back surface of the mounting portion 2Da and covers the first fitting portion 2Dd, Equipped with, A groove Gp is ​​provided between the first cover portion 2Db and the second cover portion 2Dc, and the second fitting portion 2CD is provided to move along the groove Gp.

[0032] Since a first cover portion 2Db is provided that covers the mating portions of the first mating portion 2Dd and the second mating portion 2CD from the side, it is possible to prevent fingers from reaching the mating portions from the side. Furthermore, since a second cover portion 2Dc is provided that is positioned opposite the back surface of the mounting portion 2Da and covers the first mating portion 2Dd, it is possible to prevent fingers from reaching the mating portions not only from the side but also from the side opposite the back surface of the mounting portion 2Da.

[0033] Since the mounting section 2Da is used with the elbow resting on its surface, it is conceivable that when the elbow is placed on the surface of the mounting section 2Da, the fingertips may point towards the back surface of the mounting section 2Da. In that case, safety can be further enhanced by guarding not only from the side but also from the side opposite the back surface of the mounting section 2Da. Furthermore, a groove Gp is ​​provided between the first cover section 2Db and the second cover section 2Dc, and the second fitting section 2CD is designed to move along the groove Gp, thus enhancing safety without hindering the movement of the second fitting section 2CD.

[0034] In the embodiments described above, a folding chair 2 was given as an example of the chair in Appendix 1. However, the configuration in Appendix 1 is not limited to the folding chair 2 equipped with a reclining mechanism. It can be applied to any chair in which the relative positional relationship between the leg portion 2C and the armrest portion 2D is defined by the engagement of the first engagement portion 2Dd and the second engagement portion 2CD. Furthermore, it is not limited to chairs equipped with a folding mechanism like the folding chair 2. Any chair in which the mounting portion 2Da and the leg portion 2C are positioned in an engaged state is within the scope of this disclosure.

[0035] [Note 2] The chair described in Appendix 1, The first mating portion 2Dd has a plurality of rear mating portions, The second mating portion 2CD selectively mates with each of the multiple rear mating portions.

[0036] Since the second engagement portion 2CD is configured to selectively engage with each of the multiple rear engagement portions, an action is performed to change the engagement state, for example, by lifting the armrest portion 2D to release the engagement between the rear engagement portion and the second engagement portion 2CD. During this lifting action, the mounting portion 2Da is grasped and lifted, so the fingertips are more likely to be facing the back surface of the mounting portion 2Da. In this disclosure, safety can be ensured even in such cases by the above-described configuration.

[0037] In the embodiment described above, the first recess 2Dda, the second recess 2Ddb, the third recess 2Ddc, and the fourth recess 2Ddd were given as examples of multiple rear surface mating portions. However, the examples of multiple rear surface mating portions are not limited to these, and other configurations can be adopted as long as they allow for selective mating of the second mating portion 2CD.

[0038] [Note 3] The chair described in Appendix 2, The mounting portion 2Da and the first fitting portion 2Dd are configured to move along the direction in which the multiple back fitting portions are aligned, in accordance with the inclination of the backrest portion 2B on which the seated person leans their back.

[0039] The direction in which the multiple rear-facing engagement parts are aligned is, for example, direction A along the x-axis. The mounting part 2Da and the first engagement part 2Dd move along the direction in which the multiple rear-facing engagement parts are aligned in accordance with the inclination of the backrest part 2B on which the seated person leans their back. Therefore, by changing the position in which the second engagement part 2CD engages with the multiple rear-facing engagement parts, the inclination angle of the backrest part 2B can be changed and fixed. Thus, by providing the first engagement part 2Dd and the second engagement part 2CD and linking them to the inclination of the backrest part 2B, a safe reclining mechanism can be realized.

[0040] [Note 4] The chairs described in Appendix 2 or 3, The second mating section 2CD has a pair of connecting plates 2CDa and a connecting rod 2CDc that connects the pair of connecting plates 2CDa and selectively mates with each of the multiple rear mating sections.

[0041] By providing a pair of connecting plates 2CDa, the fixing state to the leg portion 2C that supports the seat portion 2A on which the sitter sits can be made stable. By connecting the pair of connecting plates 2CDa and providing a connecting rod 2CDc that selectively engages with each of the multiple rear-side fitting portions, the engagement with the multiple rear-side fitting portions can be made stable, and the positional relationship between the leg portion 2C and the mounting portion 2Da can be stably secured.

[0042] [Note 5] The chair described in Appendix 4, The first cover portion 2Db is positioned on the outside of the pair of connecting plates 2CDa. The second cover portion 2Dc is positioned between a pair of connecting plates 2CDa and between the connecting rod 2CDc and the upper end of the leg portion 2C.

[0043] By positioning the first cover portion 2Db on the outside of the pair of connecting plates 2CDa and the second cover portion 2Dc between the pair of connecting plates 2CDa, the engagement portion between the multiple rear engagement portions formed between the pair of connecting plates 2CDa and the connecting rod 2CDc can be reliably covered. Since the second cover portion 2Dc is positioned between the connecting rod 2CDc and the upper end of the leg portion 2C, it does not get in the way when, for example, folding the leg portion 2C. Since the second cover portion 2Dc covers the area where the connecting rod 2CDc and the multiple rear engagement portions are engaged, the possibility of fingers getting caught between the connecting rod 2CDc and the multiple rear engagement portions can be reliably reduced. For example, as described in the above embodiment, in a configuration where the second cover portion 2Dc is fixed to the back surface of the mounting portion 2Da and the first engagement portion 2Dd is fixed to the back surface of the mounting portion 2Da as an independent part, the connecting rod 2CDc and the first engagement portion 2Dd can be supported by the second cover portion 2Dc to prevent them from falling off. Furthermore, this effect is also achieved, for example, when the second cover portion 2Dc is fixed to the first cover portion 2Db.

[0044] [Note 6] The chair described in Appendix 5, The device includes a connecting portion 2CDb that connects a pair of connecting plates 2CDa between the second cover portion 2Dc and the upper end of the leg portion 2C.

[0045] The connecting portion 2CDb connects the pair of connecting plates 2CDa and holds the pair of connecting plates 2CDa, thereby ensuring the structural strength of the second fitting portion 2CD. Since the connecting portion 2CDb is positioned between the second cover portion 2Dc and the upper end of the leg portion 2C, it does not hinder the movement of the second fitting portion 2CD along the groove portion Gp. [Explanation of Symbols]

[0046] 2: Folding chair 2A: Seat part 2Af: First frame group 2Ap: First frame 2Aq: Second frame portion 2Aqa:Anterior extension part 2Aqb: Front extension part 2B: Backrest 2Bf: Second frame group 2C: Legs 2Cf: Third frame group 2Cfa: Front leg frame 2Cfb: Rear leg frame section 2Cfc: Connecting frame section 2CD: Second mating section 2CDa: Connecting plate 2CDaa: Rotating coupling section 2CDab: Non-rotating coupling section 2CDb:Connection part 2CDc: Connecting rod 2BD: Backrest connection part 2D: Armrest 2Da: Mounting section 2Db: First Cover Section 2Dc: Second cover section 2Dd: First mating part 2Dda: First recess 2Ddb: Second recess 2Ddc: Third recess 2Ddd: Fourth recess Gp:Groove

Claims

1. It is a chair, On the surface side, there is a resting area where the seated person can rest their elbows, A first fitting portion is provided on the back side of the mounting portion, A second fitting portion that fits into the first fitting portion and is connected to a leg portion that supports the seat surface on which the sitter sits, A first cover portion is provided so as to intersect the back surface of the mounting portion and covers the fitting portions of the first fitting portion and the second fitting portion from the side, It comprises a second cover portion that is provided so as to face the back surface of the mounting portion and covers the first fitting portion, A groove is provided between the first cover portion and the second cover portion, and the second fitting portion is provided to move along the groove.

2. The chair according to claim 1, The first mating portion has a plurality of rear mating portions, The second fitting portion selectively fits into each of the plurality of back-side fitting portions.

3. The chair according to claim 2, The mounting portion and the first fitting portion are configured to move along the direction in which the plurality of back fitting portions are aligned, in accordance with the inclination of the backrest portion on which the seated person leans their back.

4. A chair according to claim 2 or 3, The second fitting portion comprises a pair of connecting plates and a connecting rod that connects the pair of connecting plates and selectively fits into each of the plurality of back-surface fitting portions.

5. The chair according to claim 4, The first cover portion is positioned on the outside of the pair of connecting plates, The second cover portion is positioned between the pair of connecting plates and between the connecting rod and the upper end of the leg portion.

6. The chair according to claim 5, The pair of connecting plates are provided with a connecting portion that connects them between the second cover portion and the upper end of the leg portion.

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