JP2006006619A - Chair with armrest - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a armchair which is convenient and can be stored without its armrest being an obstacle by a simple movement. <P>SOLUTION: The armchair 1 is composed of a first sticklike plate 14 on which an arm can be rested when an armrest 13 is in use and a second sticklike plate 15 which supports the first sticklike plate 14 from below. The sticklike plates 14, 15 are connected to each other in a turnable manner and a base 17 of the first sticklike plate 14 and a base 19 of the second sticklike plate 15 are connected to a backrest 11 side and a reinforcing plate 5, respectively, in a turnable manner. By this the bases 17, 19 of the armrest 13 relatively come close to each other to take a first flexed position at which both sticklike plates 14, 15 are bent outwardly and retained, the bases 17, 19 relatively come apart from each other to take a flexed direction turnabout position at which both sticklike plates 14, 15 are placed in a straight line, and the bases 17, 19 relatively come close to each other to take a second flexed position which is bent in a reverse direction (inwardly). <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a chair with an armrest.

The chair comes with an armrest that allows you to leave your body when sitting or standing, and to rest comfortably on the tip of your hand when you sit down. However, it may be difficult to sit or stand up because of the armrests.
For example, when trying to move to the side of the seating surface, the armrest gets in the way and cannot move in that direction immediately. There may be troublesome cases in which you cannot go forward unless you get up and move in that direction, or because of the space. In particular, such an operation becomes a heavy burden for an elderly person or a physically handicapped person who cannot move quickly. In addition, people with physical disabilities often wake up in bed, and when moving from bed to chair, gradually shift the body from bed and get into the chair, and conversely when moving from chair to bed. The reverse operation is performed. At that time, the actual movement is not performed from the front of the chair, but the movement is minimized by setting the chair substantially parallel to the bed and getting on and off from the side of the chair as shown in FIG. Because it is very easy. However, if an armrest is attached to the chair, this will interfere with the movement, and such a minimum movement will not be possible. Therefore, when moving between a bed and a chair with an armrest, it was troublesome to get on and off from the front side of the chair. For this reason, it is convenient if the armrest is easily retracted so as not to get in the way.
Conventionally, some large chairs, such as train seats and movie theater seats, are provided with a storage function to store them when armrests are not required. These chairs are made firmly and strong, so the armrests are large and strong, and they are cantilevered forward from the backrest. Therefore, it is possible to rotate the base point as it is and store it within the thickness of the backrest. However, in general, there are few chairs that are placed so as to be movable indoors and the armrests are cantilevered so that they cannot be easily stored. Therefore, a technique as disclosed in Patent Document 1 has been proposed.
In Patent Document 1, the armrest (armrest body 7) has a horizontal portion on which the elbow is applied and a support portion that supports the horizontal portion from below. In a movable chair, a configuration in which the chair is supported from the lower side instead of such a cantilever is common. Here, the armrest body 7 slides backward (backward direction of the backrest) to open the side of the seating surface. Such a configuration surely eliminates the above-mentioned problems.
Japanese Patent Laid-Open No. 10-42998

However, in Patent Document 1, the slidable armrest 7 protrudes toward the back side of the backrest, so there may be cases where it cannot be used in a narrow place. Further, when the user slides the armrest body 7, there is a tendency that the tip of the armrest body 7 apologizes and hits an object disposed around. For this reason, the user must slide the armrest body 7 while sufficiently checking the surroundings, causing the user to feel stress, and such a confirmation action (actually the armrest body 7 for the physically handicapped person). (You have to visually check the sliding direction).
The present invention has been made paying attention to such problems existing in the prior art. An object of the present invention is to provide a chair with an armrest that can be stored in an easy-to-use and simple operation so that the armrest does not get in the way.

In order to achieve the above object, according to the first aspect of the present invention, in a chair with an armrest provided with an armrest on the backrest and at least one of the left and right sides of the seating surface, a first bar shape on which the armrest is hung when used. The first rod-shaped member and the second rod-shaped member that supports the first rod-shaped member from below, the distal end coupling portions of the both rod-shaped members are pivotably coupled, and the proximal end coupling of the first rod-shaped member The base end connecting portion of the second rod-like member is pivotally connected to the seat back side and the base end connecting portion side of the both rod-like members relatively close to each other on the back side, and the first rod shape The first bent position where the member is supported by the second rod-like member from below and disposed substantially horizontally is distant from the proximal end connecting portion side of the rod-like members, and the rod-like members are substantially aligned. The bending direction change position arranged in the shape and the base end connecting part side of the both rod-like members As its gist that it has to be taken and a second bending position which to close to bent in the bending direction opposite to the direction of the first bending position.
According to a second aspect of the invention, in addition to the configuration of the first aspect of the invention, the armrest has at least the first and second bending members at the first bending position at the first bending position. The gist of the present invention is that a holding mechanism for holding at the second bending position is additionally provided.
Further, in the invention of claim 3, in addition to the configuration of the invention of claim 1 or 2, the backrest is divided into upper and lower divided bodies, and the proximal end connecting portion of the first rod-shaped member is divided on the upper side of the backrest. The gist of the invention is that the rod-shaped members are arranged in a substantially straight line by being separated from the upper and lower divided bodies.
Moreover, in addition to the structure of invention of Claim 2, in invention of Claim 4, the base end connection part of the said 2nd rod-shaped member is attached so that a slide movement is possible in the front-back direction in the side surface position of the said seat surface, The gist is that the rod-like members are arranged in a substantially straight line at a predetermined slide position.
Further, in the invention of claim 5, in addition to the structure of the invention of claim 2, the base end connecting portion of the first rod-like member is attached so as to be slidable in the vertical direction at the side position of the backrest, The gist is that the rod-like members are arranged in a substantially straight line at the slide position.

In such a configuration, the following operation is performed. First, at the bending direction change position where the proximal end connecting portions of the first and second rod-shaped members are relatively separated and the both rod-shaped members are substantially aligned, the proximal connecting portions of the both rod-shaped members are relatively By making it approach, it becomes possible to bend both rod-shaped members and to take the 1st or 2nd bending position. In the first bending position, that is, when the armrest can be used, the first rod-shaped member is moved so as to extend substantially horizontally. In accordance with this, the second bar-shaped member is erected. On the other hand, in the second bent position, that is, when the armrest is in the retracted state, the first rod-like member is erected on the side of the backrest, and the second rod-like member is on the side of the seating surface. Will be placed on the side.
At this time, at least the first and second bending angles of the first and second rod-shaped members are set so that the first and second rod-shaped members are stably held at the first or second bending position. It is preferable that a holding mechanism for holding the bent position is additionally provided.
The backrest is divided into upper and lower divided bodies, the base end connecting portion of the first rod-shaped member is connected to the upper divided body of the same backrest, and the rod-shaped members are substantially straight due to the separation of the upper and lower divided bodies. It is preferable to be specifically configured to be arranged in
Further, the base end connecting portion of the second rod-shaped member is attached so as to be slidable in the front-rear direction on the side surface of the seating surface, and the rod-shaped members are arranged in a substantially straight line at a predetermined slide position. It is preferable to be configured specifically.
Further, the base end connecting portion of the first rod-shaped member is attached so as to be slidable in the vertical direction on the side of the backrest, and the both rod-shaped members are arranged in a substantially straight line at a predetermined slide position. It is preferable to be configured in a general manner.

  In the invention of each of the above claims, the armrest can be stored by folding the first and second rod-like members of the armrest in use in a direction opposite to the use state by a simple operation. Or it becomes possible to provide the chair with an armrest which can store an armrest simply, without the 2nd rod-shaped member projecting outside and getting in the way.

DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment in which a chair with an armrest of the present invention (hereinafter simply referred to as a chair) is embodied will be described with reference to the drawings. In the following embodiments, armrests are arranged so as to be symmetrical on both the left and right sides, but only one armrest is illustrated and described in order to avoid duplication of explanation. Also, the front means the toe side when sitting normally on a chair, and the rear means the back side.
(Embodiment 1)
As shown in FIGS. 1 to 5, the chair 1 according to the first embodiment has a square seat frame 2 and four leg portions 3 (partially shown in the drawings) extending downward from four corners of the seat frame 2. Omitted). The chair 1 is a piece of furniture that can be moved independently. A cushion 4 is disposed on the upper surface of the seat frame 2 to form a seat surface. A rectangular parallelepiped reinforcing plate 5 constituting a part of the seating surface is disposed on the back surface side of the seating frame 2 and between the front and rear and left and right leg portions 3 (that is, in three directions).
A backrest base 6 is erected on the rear side of the seat frame 2 in an upward direction. As shown in FIGS. 4 and 5, a plate-like tenon 7 extends upward from the upper surface of the backrest base 6. A backrest body 8 is arranged above the backrest base 6. A cushion 9 is disposed on the front surface of the backrest body 8. A slide groove 10 in which the tenon 7 is fitted in a nested manner is formed in the backrest body 8. The slide groove 10 is opened on the lower surface of the backrest body 8. The backrest body 8 is guided by a tenon 7 on the backrest base 6 side and is slidable up and down. The backrest body 8 constitutes the backrest 11 integrally with the backrest base 6 in the most lowered state (the state shown in FIG. 1 or FIG. 3).

  A pair of armrests 13 are disposed on the left and right sides of the seat frame 2 and the backrest 11. The armrest 13 is composed of first and second rod-like plates 14 and 15 as first and second rod-like members. A base portion 17 as a base end connecting portion of the first rod-shaped plate 14 is attached to a side wall surface 8 a of the backrest body 8 by a pin 18 so as to be rotatable. A base portion 19 serving as a base end connecting portion of the second rod-shaped plate 15 is pivotally attached to the outer wall surfaces 5 a of the left and right reinforcing plates 5 by pins 20. The connecting portion 21 as the tip connecting portion of the first rod-shaped plate 14 is cut out in a convex shape, and the connecting portion 22 as the tip connecting portion of the second rod-shaped plate 15 is cut out in a concave shape. Both connecting portions 21 and 22 are abutted in a state in which these concave and convex cutout portions are combined, and are connected by a pin 23 so as to be relatively rotatable.

Next, the operation of the chair 1 configured as described above will be described in detail.
As shown in FIG. 1, in the state of use as a normal chair, the armrest 13 has a first rod-shaped plate 14 that extends horizontally, and the second rod-shaped plate 15 is positioned in front of the first rod-shaped plate 14. It will be arrange | positioned so that the 1st rod-shaped plate 14 may be supported from the downward direction. The backrest main body 8 is in the lowest lowered position, and constitutes a backrest 11 together with the backrest base 6. Such an arrangement position of the armrest 13 corresponds to a first bending position.
As shown in the conceptual diagram of the mechanism in FIG. 6, the armrests 13 arranged in this way can be considered as a kind of link device connected in a turning pair. Since this link device is a three-bar link, it is restricted and cannot move relative to each other unless the link length is changed. Accordingly, in the state where the backrest body 8 is lowered most, the linear distances between the pins 18 to 23, the pins 20 to 23, and the pins 18 to 20 do not change, so the armrests 13 (first and second rod-like plates 14, 15) is stably held at the same position.

On the other hand, when the armrest 13 is in the way, the backrest body 8 that was at the lowest position is slid upward. Then, as shown in FIG.2 and FIG.4, both the rod-shaped plates 14 and 15 which were in the bent state are extended gradually, and become linear. Such an arrangement position of the armrest 13 corresponds to a bending direction changing position.
As shown in the conceptual diagram of FIG. 7, the pin 23 can be bent both outwardly and inwardly with the rods 14 and 15 in a straight line. It exists in the corresponding position. Here, the outer side is the direction in which the connecting parts 21 and 22 of the rod-like plates 14 and 15 project forward as shown in FIG. 1, and the inner side is the opposite of the connecting parts 21 and 22 shown in FIG. The direction of retreating as in 3. Here, in order to store the armrest 13, the user applies a habit of slightly bending the connecting portions 21 and 22 inward to bend inward.
Next, the backrest main body 8 moved upward is lowered again. Then, the first and second rod-like plates 14 and 15 gradually bend inward, and the backrest body 8 is brought into a state of FIG. The first rod-shaped plate 14 is stored in a standing state so as to be within the thickness of the backrest 11 at the side of the backrest 11. Further, the second rod-shaped plate 15 is horizontally disposed along the reinforcing plate 5 and is stored at a position slightly lower than the seat frame 2. Such an arrangement position of the armrest 13 corresponds to a second bending position.
At this time, as shown in the conceptual diagram of the mechanism in FIG. 8, a three-joint link is formed, so that the armrest 13 (the first and second rod-like plates 14 and 15) is stable at that position as described in FIG. Will be held.
By storing the armrest 13 in this manner, the armrest 13 does not get in the way, and for example, a person sitting on the chair 1 can move to the side of the seat frame 2 and get off the chair 1 while shifting the body as it is. It becomes like this. Further, for example, it is possible to get into the seat frame 2 from the side of the chair 1 while shifting the body as it is from sleeping. In that case, since the second rod-shaped plate is disposed on the side of the seating surface in parallel with the seating surface frame 2, it can be used as a movement assisting member for placing a hand or placing a butt during movement. is there.

The present invention has the following specific effects by being configured as in the first embodiment.
(1) When the armrest 13 is unnecessary, the backrest body 8 can be easily stored by sliding it upward. At that time, the first and second rod-shaped plates 14 and 15 are folded and stored in positions that do not interfere with the backrest 11 side and the seating frame 2 side, so that the armrest 13 protrudes greatly from the chair 1 and is retracted. That won't get in the way.
(2) Since the second rod-shaped plate is disposed on the side of the seating surface in parallel with the seating surface frame 2, the second rod-shaped plate is used as a guide when the user moves to the side. Can be used. For example, it is possible to place a hand on the second rod-shaped plate or to be a connecting passage between the bed and the chair 1.
(3) Since the first and second rod-like plates 14 and 15 constituting the armrest 13 construct a three-bar link at both the use position and the storage position of the armrest 13, the armrest 13 is firmly and stable even without a special fixing device. Will be held at that position.

(Embodiment 2)
In the following description of the second embodiment, detailed description of the configuration common to the first embodiment will be omitted. In the illustration in the second embodiment, the same reference numerals are given to the components common to the first embodiment.
As shown in FIGS. 9 to 14, the chair 31 according to the second embodiment is configured such that the backrest 32 is integrally divided with the seat frame 2 without being divided vertically as in the first embodiment. It is formed upright behind the frame 2. A cushion 33 is disposed on the front surface of the backrest 32.
A pair of armrests 13 are disposed on the left and right sides of the seat frame 2 and the backrest 32. Unlike Embodiment 1, the base portion 17 of the first bar-shaped plate 14 of the armrest 13 is attached to the upper side wall surface 8a of the backrest 32 so as to be rotatable. Unlike the first embodiment, the base 19 of the second rod-shaped plate 15 is formed with a large notch 34, and a lock nut 35 is disposed in the notch 35. Hereinafter, the structure near the lock nut 35 will be described with reference to FIGS.
As shown in FIGS. 9 and 11, the left and right reinforcing plates 5 are provided with a long hole 37 extending horizontally toward the front. A long bolt 38 is inserted into the long hole 37 from the inside of the reinforcing plate 5. The tip of the long bolt 38 traverses the inside of the base 19 of the second rod-shaped plate 15 and is exposed to the notch 34. The lock nut 35 is screwed to the tip of the long bolt 38. In such a configuration, the reinforcing plate 5 and the second rod-like plate 15 can be fastened together by fastening the lock nut 35 and the long bolt 38, so that the second rod-like plate 15 can be fixed to the reinforcing plate 5. It becomes possible. The long bolt 38 is slidable back and forth along the long hole 37, and the base portion 19 of the second rod-shaped plate 15 can be fixed back and forth at any position within the movable range of the long bolt 38. .

Next, the operation of the chair 31 configured as described above will be described in detail.
As shown in FIG. 9, in the state of use as a normal chair, the armrest 13 has the first rod-like plate 14 extending horizontally, and the second rod-like plate 15 is located at a position near the front of the first rod-like plate 14. It will be arrange | positioned so that the 1st rod-shaped plate 14 may be supported from the downward direction. Such an arrangement position of the armrest 13 corresponds to a first bending position. At this time, as shown in FIGS. 9 and 12, the base 19 of the second rod-shaped plate 15 is locked to the rearmost position of the reinforcing plate 5, that is, with the long bolt 38 disposed at the rear end position of the long hole 37. The nut 35 is tightened.
As shown in the conceptual diagram of the mechanism in FIG. 6, the armrests 13 arranged in this way can be considered as a kind of link device connected in a turning pair. Since this link device is a three-bar link, it is restricted and cannot move relative to each other unless the link length is changed. Accordingly, in the state where the backrest body 8 is lowered most, the linear distances between the pins 18 to 23, the pins 20 to 23, and the pins 18 to 20 do not change, so the armrests 13 (first and second rod-like plates 14, 15) is stably held at the same position.

On the other hand, when the armrest 13 is in the way, the lock nut 35 is first loosened so that the long bolt 38 can be slid along the long hole 37. Then, as shown in FIG. 13, the base portion 19 of the second rod-shaped plate 15 is arranged closest to the front of the reinforcing plate 5, that is, the long bolt 38 is disposed at the front end position of the long hole 37. The lock nut 35 remains loose. Then, as shown in FIG. 10, the rod-like plates 14 and 15 that have been bent are gradually extended to be linear. Such an arrangement position of the armrest 13 corresponds to a bending direction changing position. As shown in the conceptual diagram of FIG. 7, the pin 23 can be bent both outwardly and inwardly with the rods 14 and 15 in a straight line. It exists in the corresponding position. Here, in order to store the armrest 13, the user pushes the connecting portions 21 and 22 slightly inward to bend them inward. At the same time, the first rod-shaped plate 14 swings backward by its own weight with the pin 18 as a fulcrum. The base 19 of the second rod-shaped plate 15 is gradually retracted as the both rod-shaped plates 14 and 15 are bent inward, and the first rod-shaped plate 14 is completely suspended as shown in FIGS. In this state, the long bolt 38 is disposed at a substantially central position of the long hole 37. At this time, the first rod-shaped plate 14 is stored in an upright state so as to be within the thickness of the backrest 11 on the side of the backrest 11. Further, the second rod-shaped plate 15 is horizontally disposed along the reinforcing plate 5 and is stored at a position slightly lower than the seat frame 2. Such an arrangement position of the armrest 13 corresponds to a second bending position.
At this time, by tightening the lock nut 35 again, a three-joint link is formed as shown in the conceptual diagram of FIG. 8, so that the armrests 13 (first and second rod-like plates 14 are the same as described above with reference to FIG. , 15) is stably held at that position.
By storing the armrest 13 in this manner, the armrest 13 does not get in the way, and for example, a person sitting on the chair 1 can move to the side of the seat frame 2 and get off the chair 1 while shifting the body as it is. It becomes like this. Further, for example, it is possible to get into the seat frame 2 from the side of the chair 1 while shifting the body as it is from sleeping. In that case, since the second rod-shaped plate is disposed on the side of the seating surface in parallel with the seating surface frame 2, it can be used as a movement assisting member for placing a hand or placing a butt during movement. is there.

In addition to the effects (1) and (2) of the first embodiment, the present invention has the following specific effects by being configured as in the second embodiment.
(1) Since the first and second rod-like plates 14 and 15 constituting the armrest 13 construct a three-bar link by tightening the lock nut 35 in both the use position and the storage position of the armrest 13, a simple mechanism It will be held in that position firmly and stably.

(Embodiment 3)
In the following description of the third embodiment, detailed description of the configuration common to the first or second embodiment will be omitted. In the illustration in the third embodiment, the same reference numerals are given to the constituent members common to the first or second embodiment.
As shown in FIGS. 15 to 17, the chair 51 in the third embodiment is provided with a substantially L-shaped auxiliary plate 41 with respect to the outer side surface 32 a of the backrest 32 and the outer side surface 5 a of the reinforcing plate 5. The auxiliary plate 41 includes a horizontal plate 42 and a vertical plate 43. A pair of armrests 13 are disposed on the left and right sides of the seat frame 2 and the backrest 32. Unlike the first and second embodiments, the base 19 of the second rod-shaped plate 15 of the armrest 13 is attached to the outer wall surface 42a of the horizontal plate 42 so as to be rotatable.
Unlike the first and second embodiments, the base portion 17 of the first rod-shaped plate 14 of the armrest 13 is movable up and down along a long groove 45 formed in the upper portion of the vertical plate 43. Hereinafter, the structure near the long groove 45 will be described with reference to FIGS.
The long groove 45 is formed in the upper position of the vertical plate 43 along the vertical direction. One end of the pin 18 inserted into the base portion 17 of the first rod-shaped plate 14 reaches the long groove 45. A head 46 having a diameter larger than the width of the long groove 45 is formed at an end portion of the pin 18 where the long groove 45 is disposed. As a result, the pin 18 can slide up and down along the long groove 45 without falling off the long groove 45, and the base 17 of the first rod-shaped plate 14 can also move up and down within the movable range of the pin 18. It becomes.

Next, the operation of the chair 51 configured as described above will be described in detail.
As shown in FIG. 15, in the state of use as a normal chair, the armrest 13 has a first rod-shaped plate 14 that extends horizontally, and the second rod-shaped plate 15 is positioned in front of the first rod-shaped plate 14. It will be arrange | positioned so that the 1st rod-shaped plate 14 may be supported from the downward direction. Such an arrangement position of the armrest 13 corresponds to a first bending position. At this time, as shown in FIGS. 15 and 18, the pin 18 inserted through the base portion 17 of the first rod-shaped plate 14 is disposed at the lowest position of the long groove 45.
As shown in the conceptual diagram of the mechanism in FIG. 6, the armrests 13 arranged in this way can be considered as a kind of link device connected in a turning pair. Since this link device is a three-bar link, it is restricted and cannot move relative to each other unless the link length is changed. Accordingly, in the state where the backrest body 8 is lowered most, the linear distances between the pins 18 to 23, the pins 20 to 23, and the pins 18 to 20 do not change, so the armrests 13 (first and second rod-like plates 14, 15) is stably held at the same position. In particular, when the elbow is actually placed on the first rod-shaped plate 14, the first rod-shaped plate 14 is pressed by the weight of the hand from above, and the sense of stability is further increased.

On the other hand, when the armrest 13 is obstructive, first, the base 17 of the first rod-shaped plate 14 is moved upward. That is, the pin 18 is slid upward along the long groove 45. Then, as shown in FIG. 16, the two rod-shaped plates 14 and 15 that have been bent are gradually extended to be linear. At this time, the pin 18 is disposed at the upper end position of the long groove 45 as shown in FIG. Such an arrangement position of the armrest 13 corresponds to a bending direction changing position.
As shown in the conceptual diagram of FIG. 7, the pin 23 can be bent both outwardly and inwardly with the rods 14 and 15 in a straight line. It exists in the corresponding position. Here, in order to store the armrest 13, the user pushes the connecting portions 21 and 22 slightly inward to bend them inward. At the same time, the pin 18 descends the long groove 45 again. The first rod-shaped plate 14 swings backward by its own weight with the pin 18 as a fulcrum as the pin 18 descends. As the both rod-shaped plates 14 and 15 are bent inward, the base portion 19 of the second rod-shaped plate 15 is gradually retracted, and the first rod-shaped plate 14 is completely suspended as shown in FIGS. In this state, the pin 18 is disposed at a substantially central position of the long groove 45. At this time, the first rod-shaped plate 14 is stored in an upright state so as to be within the thickness of the backrest 11 on the side of the backrest 11. Further, the second rod-shaped plate 15 is horizontally disposed along the reinforcing plate 5 and is stored at a position slightly lower than the seat frame 2. Such an arrangement position of the armrest 13 corresponds to a second bending position.
At this time, as shown in the conceptual diagram of the mechanism in FIG. 8, a three-joint link is formed, so that the armrest 13 (the first and second rod-like plates 14 and 15) is stable at that position as described in FIG. Will be held.
By storing the armrest 13 in this manner, the armrest 13 does not get in the way, and for example, a person sitting on the chair 1 can move to the side of the seat frame 2 and get off the chair 1 while shifting the body as it is. It becomes like this. Further, for example, it is possible to get into the seat frame 2 from the side of the chair 1 while shifting the body as it is from sleeping. In that case, since the second rod-shaped plate is disposed on the side of the seating surface in parallel with the seating surface frame 2, it can be used as a movement assisting member for placing a hand or placing a butt during movement. is there.

In addition to the effects (1) and (2) of the first embodiment, the present invention has the following specific effects by being configured as in the third embodiment.
(1) It is possible to change the armrest 13 in a use state to the retracted state very quickly just by lightly lifting the first rod-shaped plate 14.

It should be noted that the present invention can be modified and embodied as follows.
In each of the above-described embodiments, the armrest 13 is configured by connecting the first and second rod-shaped plates 14 and 15, but both the rod-shaped plates 14 and 15 are connected via a separate connecting member. May be connected.
-The connection position of the base parts 17 and 19 of the 1st and 2nd rod-shaped plates 14 and 15 is not limited above.
The mortise 7 formed on the backrest base 6 in the first embodiment may be formed on the backrest body 8 side.
-Even if the chair is designed so that the armrest is formed only on either the left or right, it can be applied.
The design of the chairs 1, 31, 51 in each of the above embodiments is an example, and the number of leg portions 3, the presence / absence of cushions, and the shape can of course be changed. It is also possible to apply to a seat chair without legs.
The arrangement position of the first and second rod-shaped plates 14 and 15 when stored may be arranged at a position slightly different from the above depending on the design. For example, the second rod-shaped plate 15 is horizontally disposed (stored) along the reinforcing plate 5 in the above description. However, depending on the position of the base portion 19 of the second rod-shaped plate 15, the second rod-shaped plate 15 may be a seat frame. There may be a case where they are arranged horizontally along the line 2.
As described above, the armrest 13 is described in detail by showing only one of the chairs 1, 31, 51, but the configuration of the other armrest 13 in the symmetrical position is a symmetrical shape in each embodiment. It has the exact same configuration.
-Besides, it is free to implement in a mode that does not depart from the gist of the present invention.

FIG. 3 is a partially cutaway perspective view showing an armrest usable state in the chair according to the first embodiment of the present invention. The partially notched perspective view of the state in the middle of the armrest storage in the chair of the same Embodiment 1. FIG. The partially notched perspective view of the armrest storage completion state in the chair of the same Embodiment 1. FIG. The side view of the state in the middle of the armrest storage of the chair of the same Embodiment 1. FIG. Explanatory drawing of the vicinity of the backrest of the chair of the same Embodiment 1. FIG. The mechanism conceptual diagram in the armrest useable state of the chair in each embodiment. The mechanism conceptual diagram in the middle of the armrest storage of the chair in each embodiment. The mechanism conceptual diagram in the armrest storage completion state of the chair in each embodiment. The partially notched perspective view of the armrest available state in the chair of Embodiment 2 of this invention. The partially notched perspective view of the state in the middle of the armrest storage in the chair of the same Embodiment 2. FIG. The partially notched perspective view of the armrest storage completion state in the chair of the same Embodiment 2. FIG. The expanded sectional view of the lock nut vicinity of the same Embodiment 2. FIG. The expanded sectional view of the lock nut vicinity of the same Embodiment 2. FIG. The expanded sectional view of the lock nut vicinity of the same Embodiment 2. FIG. The partially notched perspective view of the armrest available state in the chair of Embodiment 3 of this invention. The partially notched perspective view of the state in the middle of the armrest storage in the chair of the same Embodiment 3. FIG. The partially notched perspective view of the armrest storage completion state in the chair of the same Embodiment 3. FIG. The expanded sectional view near the long groove of the auxiliary | assistant plate (vertical plate) of the same Embodiment 3. FIG. The expanded sectional view near the long groove of the auxiliary | assistant plate (vertical plate) of the same Embodiment 3. FIG. The expanded sectional view near the long groove of the auxiliary | assistant plate (vertical plate) of the same Embodiment 3. FIG. The conceptual diagram explaining the arrangement | positioning relationship between a bed and a chair.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1,31,51 ... Chair with an armrest, 2 ... Seat frame which comprises a seat surface, 11 ... Backrest, 13 ... Armrest, 14 ... Bar-shaped plate as a 1st rod-shaped member, 15 ... As a 2nd rod-shaped member A rod-shaped plate, 17 ... a base part as a base end connection part, 19 ... a base part as a base end connection part, 21 ... a connection part as a front end connection part, 22 ... a connection part as a front end connection part, 32 ... a backrest.

Claims (5)

In a chair with an armrest provided with an armrest on the seat surface, the backrest, and at least one of the left and right sides of the seat surface,
The armrest is composed of a first rod-like member on which the elbow is put on and a second rod-like member that supports the first rod-like member from below, and the tip connecting portions of the both rod-like members are rotatably connected. In addition, the base end connecting portion of the first rod-shaped member is connected to the backrest side, and the base end connecting portion of the second rod-shaped member is rotatably connected to the seat surface side,
A first bent position where the proximal end connecting portions of the rod-shaped members are relatively close to each other and the first rod-shaped member is supported by the second rod-shaped member from below and disposed substantially horizontally; The bending direction changing position where the base end connecting portion side of the member is relatively separated and the both rod-like members are arranged in a substantially straight line, and the base end connecting portion side of the both rod-like members are relatively close to each other. A chair with an armrest characterized by being capable of taking a second bending position that is bent in a direction opposite to the bending direction of the bending position. The armrest is provided with a holding mechanism for holding the bending angle of the first and second rod-shaped members at the first bending position at least at the first and second bending positions. The chair with an armrest according to claim 1. The backrest is divided into upper and lower divided bodies, the base end connecting portion of the first rod-like member is connected to the upper divided body of the same backrest, and the rod-like members are substantially aligned by the separation of the upper and lower divided bodies. It is arrange | positioned, The chair with an armrest of Claim 1 or 2 characterized by the above-mentioned. The proximal end connecting portion of the second rod-shaped member is attached so as to be slidable in the front-rear direction at the side surface position of the seating surface, and the rod-shaped members are arranged in a substantially straight line at a predetermined slide position. The chair with an armrest according to claim 2, wherein the chair has an armrest. The proximal end connecting portion of the first rod-shaped member is attached so as to be slidable in the vertical direction at the side position of the backrest, and the rod-shaped members are arranged in a substantially straight line at a predetermined slide position. The chair with an armrest according to claim 2, wherein the chair has an armrest.

Images