JP2006296960A - Chair having massage function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a chair having a massage function which can be made to a state not giving a massage effect and can give the massage effect when desired. <P>SOLUTION: The chair is equipped with a seat 1, a backrest part 2 having a flat member 4 with which the back is brought into contact, and a support member 3 in which treating elements 10 are mounted so as to form a gap g between the flat member 4 and them on the rear side of the flat member 4. By the back frame member 5 of the backrest part 2 reclining backward in the sitting state leaning against the backrest part 2, the flat member 4 approaches the treating elements 10 of the support member 3. By this, the gap g is lost, and the state that the flat member 4 and the treating elements 10 are brought into contact with each other is attained. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a chair with a massage function including a treatment element for giving a massage effect to a seated user.

Conventionally, a treatment element (pressing element) such as a ball shape or a roller is provided on the backrest part, and the user sitting on the seat part leans against the backrest part, so that the treatment element comes into contact with the back of the user and massages. A chair with a massage function that can give an effect is known. There exist a thing like patent document 1, patent document 2, and patent document 3 in what is known as such a chair.
What is described in Patent Document 1 has a flexible covering body that can be put on a backrest portion. The covering body is provided with a hollow protrusion, and the hollow protrusion has a metal, resin, or the like. The sphere by is inserted. By covering the backrest part with the covering body having such a sphere, a chair (sphere) as a treatment element protrudes from the backrest part.
In the device described in Patent Document 2, a roller is provided at the backrest portion, and the roller protrudes from the backrest portion.
In the device described in Patent Document 3, a pressing ball is provided on the surface side of the backrest portion, and the pressing ball is provided on the surface of the backrest portion so as to protrude from other smooth portions.

Japanese Utility Model Publication No.57-2040 Japanese Utility Model Publication No. 58-147521 Japanese Utility Model Publication No. 1-119636

The conventional chair with a massage function described in Patent Documents 1 to 3 is such that a treatment element such as a ball or a roller protrudes from the surface of the backrest part, and the user leans against the backrest part. The treatment element can be brought into contact with the body to give a massage effect. However, even if you want to use this chair in a normal sitting state that does not expect a massage effect, the treatment element abuts on the user's back, causing the user to feel uncomfortable. Yes. Furthermore, when sitting in this chair for a long time in a normal sitting state, the treatment element remains in contact with the back, which may cause discomfort. In other words, the conventional one sits when wanting a massage, and is configured as a chair dedicated to massage.
Further, when a treatment element such as a ball or roller is exposed and rotated at the backrest portion, there is a possibility that the hair is caught (or caught) by the treatment element.

  This invention is made in view of the said problem, and can also be set as the state which does not give a massage effect, and provides the chair with a massage function which can give a massage effect when desired. With the goal.

In order to achieve the above object, the chair with a massage function of the present invention has a seat portion, a backrest portion having a planar member that contacts the back side of the upper body, and a treatment element attached to the rear of the planar member. In a seated state in which the back surface of the upper body is in contact with the planar member by providing the supporting member and pressing the planar member so that the planar member is accessible to the supporting member. The treatment element can be changed between a non-massage state in which the back surface of the upper body is not pressed and a massage state in which the treatment element presses the back surface of the upper body.
According to such a configuration, in the non-massage state in which the treatment element does not press the back surface of the upper body, the massage effect is not given even in the sitting state in which the back surface of the upper body is in contact with the planar member. In other words, it functions as a normal chair with a backrest. And in the massage state in which a treatment child presses the back of the upper body, a massage effect can be given to the user.

Or the chair with a massage function of this invention is a backrest part which has a sheet | seat part, the planar member which contact | abuts the back side of an upper body, and a treatment element in the back of the said planar member between the said planar member. A support member attached so that a gap is formed, and the planar member and the support member are provided so as to be accessible, whereby the gap is maintained, and It is possible to change to a second state in which the gap is eliminated and the planar member and the treatment element are in contact with each other.
According to such a configuration, in the first state in which a gap is maintained between the treatment element and the planar member, the treatment element does not press the back side (for example, the back) of the upper body. That is, it functions as a normal chair with a backrest that does not give a massage effect. And in the 2nd state which the planar member and the treatment element are contacting, a treatment element can press a back via a planar member, and can give a massage effect with respect to a user.

Further, in these chairs, the backrest portion has a back frame member to which the planar member is attached, and the back frame member and the support member are provided so that relative position change is possible. Accordingly, it is preferable that the planar member is accessible to the support member.
According to this configuration, the planar member attached to the back frame member and the treatment element attached to the support member come into contact with each other by changing the position of the back frame member and the support member in the direction in which they approach each other. it can. Thereby, the treatment element can press a back via a planar member.
In order to obtain a massage effect by this treatment element, for example, the planar member is made of an elastically deformable (stretchable) material, and the planar member is elastically deformed by leaning against the planar member. The gap between the member and the treatment element may be eliminated and the back may be pressed by the treatment element. However, as in this configuration, for example, a back frame member is provided so that the position of the support member can be changed, and the backrest part is provided. If the back frame member is brought closer to the support member side together with the planar member by leaning, the back can be pressed more strongly by the treatment element.

  Furthermore, in this case, it is preferable that switching means for switching between a restrained state for restricting a relative position change between the back frame member and the support member and a free state for allowing the relative position change to be freely made is provided. . According to this, if the back frame member and the support member are brought close to each other in the free state, the back can be pressed by the treatment element. Moreover, if it is set as a restraint state by the switching means, it can control that a back frame member and a supporting member move to the direction which approaches, and it can prevent that a treatment element contact | abuts to a back.

Further, when the planar member is pressed against the back surface of the upper body, the backrest portion allows the backrest portion to fall backward from the standing state, and the support member falls backward from the standing state. It is preferable to provide a second backward inclined portion to allow.
According to this configuration, the weight of the upper body of the user can be reduced by leaning the backrest portion and the support member back together, causing the backrest portion and the supporting member to fall back, and making the massage state in which the planar member and the treatment element are in contact with each other. The back can be pressed by the treatment element.

  In this case, it is preferable that a lock mechanism for maintaining at least one of the backrest portion and the support member in an upright state is provided. Thereby, the backrest portion and the support member can be prevented from being greatly tilted rearward, and the chair can be obtained in a normal seating posture in which the backrest portion is in the standing state.

  Moreover, it is preferable that the said 2nd back inclination part has an elastic member which provides the said support member with the elastic force of the direction which returns the said support member in the state which fell to back to a standing state. Thereby, the supporting member can be returned to the standing state by the elastic member. That is, the user can easily return to the normal sitting posture in which the upper body is raised by being pushed by the support member from the posture in which the upper body is leaned backward by leaning against the backrest.

  Moreover, it is preferable that the treatment element is attached to the support member so that the position thereof can be changed. According to this, by adjusting the position of the treatment element, it is possible to change the part of the back where the treatment element is to be contacted, and it is possible to cope with the difference in the position of the acupuncture point due to the height difference.

  Moreover, it is preferable that the said treatment element is attached to the multiple places including an upper end part in the said support member, and the said treatment element provided in the upper end part is made to be rotatable with respect to the said support member. According to this, the said treatment element can be made to respond | correspond from the neck part to a shoulder part with respect to the user of various heights by adjusting the angle of the treatment element of an upper end part.

  According to the chair with a massage function of the present invention, it is possible to make the treatment element not press the back, and the user can take a comfortable sitting posture. That is, it can be used as a normal chair. And if it is set as the massage state which the planar member and the treatment element are contacting, a back can be pressed with a treatment element and the massage effect will be acquired.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a perspective view showing an embodiment of a chair with a massage function according to the present invention, and FIG. 2 is a side view thereof. This chair includes a seat portion 1 on which a user is seated, a backrest portion 2 provided on the rear side of the seat portion 1, and a leg portion 12 that supports the seat portion 1 below. Further, this chair includes a treatment element (massage tool) 10 capable of giving a massage to a user leaning on the backrest 2 and a support member 3 to which the treatment element 10 is attached.

  The treatment element 10 has a roller shape or a ball shape, and a plurality of treatment elements 10 are attached to the support member 3. The treatment element 10 is provided at a portion corresponding to the back side of the upper body of the user leaning against the backrest 2. The back of the upper body is in the range from the waist to the neck of the user who is sitting on the seat 1, and the treatment element 10 corresponds to a part (one part to a plurality of parts) of this range. It may be provided as follows.

  The leg portion 12 has a vertical support shaft 13 and a plurality of leg arms 14 extending radially from the lower portion of the support shaft 13 in the horizontal direction. A wheel 14 a is attached to the tip of the leg arm 14. A base member 15 of the seat portion 1 is attached to the upper end of the support shaft 13.

  The seat 1 includes the base member 15 and a seat body 16 fixed to the base member 15. The seat body 16 has a cloth-like member 17 constituting a seat surface and seat frame members 18 on both the left and right sides to which the cloth-like member 17 is attached. As shown in FIG. 2, the seat frame member 18 is configured to extend forward from the front portion of the base member 15, and then be folded back into a U shape and extend rearward. A cloth-like member 17 is provided between the left and right seat frame members 18. The seat frame member 18 is formed of, for example, a metal pipe. The cloth-like member 17 is made of a material (cloth) having elasticity (stretchability), and a mesh-like material is particularly preferable.

  The backrest part 2 is connected to the seat part 1 and supported by the seat part 1, and a planar member 4 that abuts the back side of the upper body of the user seated on the seat part 1 and the planar member 4. It has a back frame member 5 to which it is attached. The back frame member 5 is formed of, for example, a metal pipe, and includes left and right side members 5a and an upper member 5b that connects both side members 5a at the top. The back frame member 5 shown in FIG. 1 is configured such that one side member 5a in the height direction and the upper member 5b in the horizontal direction are connected to each other by bending one pipe. The planar member 4 is attached to the back frame member 5 so as to be surrounded from three sides. The planar member 4 is the same as the cloth-like member 17 of the seat portion 1 and is made of a material (cloth) having elasticity (stretchability). Further, the side member 5a of the back frame member 5 is configured to be continuous with the rear end portion of the seat frame member 18 of the seat portion 1 at its lower end portion. Moreover, you may comprise the planar member 4 of the backrest part 2, and the cloth-like member 17 of the seat part 1 by one member.

  The support member 3 is a column member composed of a single metallic pipe member that extends upward while extending backward from the rear portion of the base member 15 that the seat portion 1 has, and a backrest portion. It is provided at a position corresponding to the central portion of the two planar members 4. A plurality of treatment elements 10 are attached vertically and horizontally along the longitudinal direction (height direction) of the support member 3.

  Armchairs 20 are provided on both the left and right sides of the chair, and the armrests 20 are constituted by members whose longitudinal direction is the front-rear direction, and are fixed to the middle part in the height direction of the support member 3 at the rear part. Further, a support pillar member 21 in the height direction supporting the armrest part 20 is attached to the lower part of the armrest part 20, and the lower part of the support pillar member 21 is fixed to the base member 15 of the seat part 1. . The armrest portion 20 and the support column member 21 can restrain the support member 3 with respect to the base member 15, and the support member 3 is difficult to fall backward, but the back frame member 5 of the backrest portion 2 is It is in a state where it can fall back without being affected by the armrest 20 or the like (without being restrained).

  In this chair, a seat member 1, a backrest 2, a support member 3, and a support pillar member 21 for an armrest 20 are attached to a base member 15 through the seat 1. Thereby, the load which acts on these backrest parts 2 etc. can be transmitted to the base member 15 fixed to the leg part 12, and a stable chair is obtained.

In this chair, when the load is not applied to the backrest 2, that is, the user is not leaning against the backrest 2, the back frame member 5 of the backrest 2 in a side view as shown in FIG. The support member 3 and the support member 3 have a shape having a uniform interval along the longitudinal direction of the support member 3. That is, the shape of the back frame member 5 and the support member 3 in a side view is a (substantially) circular arc shape centered on a virtual point (virtual horizontal line) behind the backrest portion 2 and the support member 3 by a predetermined dimension. . And the radius of the back frame member 5 centering on the virtual point is made larger than the radius of the support member 3.
Further, between the backrest 2 and the support member 3, the support member 3 attaches the treatment element 10 so that a gap g is formed between the back of the planar member 4 and the back surface of the planar member 4. ing.

And in order to obtain a massage effect by this treatment element 10, the planar member 4 and the supporting member 3 are made accessible. Thus, in the sitting state where the back is in contact with the planar member 4, the gap g between the planar member 4 and the treatment element 10 is maintained (first state). Is a non-massage state in which the back is not pressed (FIG. 2) and a state (second state) in which the gap member g is eliminated and the planar member 4 and the treatment element 10 are in contact with each other. It becomes possible to change to a massage state (FIG. 3) that presses the back surface.
In the backrest 2, the elastic planar member 4 is stretched on the back frame member 5 with a predetermined tension. Therefore, in order to eliminate the gap g without changing the relative positional relationship between the back frame member 5 and the support member 3, a predetermined pressing force against the tension generated in the planar member 4 is applied to the planar shape. It is necessary to give to the member 4. That is, in order to obtain a massage effect without changing the relative positional relationship between the back frame member 5 and the support member 3, as will be described later, by placing the backrest portion 2 together with the support member 3 in a rearward state, It is necessary to apply a large pressing force based on the weight of the upper body to the planar member 4 to elastically deform the planar member 4. Thereby, the clearance gap g between the planar member 4 and the treatment element 10 can be eliminated, and the back can be pressed by the treatment element 10.

Further, in order to obtain a massage effect more effectively by the treatment element 10, as shown in FIGS. 2 and 3, the back frame member 5 of the backrest part 2 has a back frame member with respect to the support member 3. 5 is provided so that the position can be changed by elastic deformation (at its lower part). Then, when the position of the back frame member 5 is changed to the rear side, the planar member 4 attached to the back frame member 5 approaches the treatment element 10 attached to the support member 3 so that they contact each other. .
Therefore, when the user leans against the planar member 4 of the backrest part 2, the back frame member 5 is elastically deformed and moves in a direction in which the entire back frame member 5 falls backward. Thereby, the planar member 4 attached to the back frame member 5 contacts the treatment element 10, and the treatment element 10 can press the back via the planar member 4.

  Furthermore, a switching means 6 that can maintain the distance between the back frame member 5 and the support member 3 is provided between the back frame member 5 and the support member 3. The switching means 6 is, for example, a support member 19 assembled in a rod shape or a frame shape. The support member 19 is pivotally attached to the upper end portion of the support member 3 with its one end side being the center. The end side is an engaging portion (not shown) that can engage with a part of the back frame member 5. As shown in FIG. 2, the engaging portion of the supporting member 19 attached to the supporting member 3 engages with the upper portion of the back frame member 5, so that the supporting member 19 is connected to the back frame member 5 and the supporting member. Therefore, the relative position change between the back frame member 5 and the support member 3 can be restricted (restraint state). Then, as shown in FIG. 3, by releasing the engagement between the support member 19 and the back frame member 5, the relative position change between the back frame member 5 and the support member 3 (rear of the back frame member 5). Can fall freely (free state). Note that the position of the switching means 6 may be other than the upper part of the support member 3.

  If the back frame member 5 and the support member 3 are brought into the restrained state by the switching means 6, the gap g between the planar member 4 of the backrest 2 and the treatment element 10 of the support member 3 can be maintained. . As a result, even if the user leans against the backrest 2, the back does not come into contact with the treatment element 10, or even if the planar member 4 extends and the treatment element 10 comes into contact with the back, the presence of the treatment element 10 is not felt. It is possible to prevent the massage effect from being given (to the extent that the treatment element 10 does not give a sense of incongruity). On the other hand, when the back frame member 5 and the support member 3 are in the free state, the back frame member 5 can be elastically deformed and tilted backward by leaning against the backrest portion 2, and the back has the planar member 4. It can be strongly pressed by the treatment element 10 to obtain a massage effect. That is, it can be set as the normal chair which does not give a massage effect by making it into a restraint state by the switching means 6, and it can be set as the massage chair which gives a massage effect by switching to a free state. Thereby, this chair can be used as a home chair used in daily life or an office chair that can sit for a long time.

  Further, as shown in FIG. 3, the back frame member 5 is elastically deformed and falls rearward so that the treatment element 10 comes into contact with the back, and the treatment element 10 is pushed by the back, and the support member 3 is elastically deformed. And can be configured to fall backward. In this case, it can be said that the amount of elastic deformation of the back frame member 5 to the rear is larger than the amount of elastic deformation of the support member 3 to the rear.

  FIG. 4 is a rear view showing another embodiment of the chair with a massage function according to the present invention, and FIGS. 5 and 6 are side views thereof. This chair has the same configuration as the chair shown in FIGS. 2 and 3, but in this embodiment, the back frame member 5 is arranged so that the back frame member 5 of the backrest part 2 can fall backward from the standing state. There are provided a first rearward tilting portion 8 that supports and a second rearward tilting portion 9 that supports the support member 3 so that the support member 3 can fall backward from the standing state.

  The first rearward inclined portion 8 has a first pipe member 22 bent at a constant radius of curvature, and the pipe member 22 is curved from the upper rear to the lower front, The portion is fixed to the rear end portion of the seat frame member 18. And the 1st curved part 24 by which the curvature radius was made the same with the said pipe member 22 is formed in the lower end part of the side part member 5a of the back frame member 5, and this curved part 24 is in the pipe member 22. By moving forward and backward in an insertion state, the back frame member 5 can fall from the standing state to the rear (FIG. 6), or from the rearward to the standing state (FIG. 5). Further, it can be said that the pipe member 22 is a connecting member between the seat frame member 18 and the side member 5a of the back frame member 5.

  The second rearward inclined portion 9 has a second pipe member 23 bent at a constant radius of curvature, and the pipe member 23 is curved from the upper rear to the lower front, The portion is fixed to the rear end portion of the base member 15. A second curved portion 25 having the same radius of curvature as that of the pipe member 23 is formed at the lower end portion of the support member 3, and the curved portion 25 is inserted into the pipe member 23 so as to advance and retreat. By moving, the support member 3 can be brought into a standing state (FIG. 6) from a standing state (FIG. 6) or from a falling state to a standing state (FIG. 5). Further, it can be said that the pipe member 23 is a connecting member between the base member 15 and the support member 3.

  The center point of the first pipe member 22 and the first curved portion 24 of the back frame member 5 and the center point of the second pipe member 23 and the second curved portion 25 of the support member 3 are as follows: It exists on the same horizontal line (common horizontal line H). Thereby, the backrest part 2 and the support member 3 can be rotated around the common horizontal line H, and are rotated between the standing state and the backward-falling state. Thereby, when a user leans on the backrest part 2 and falls an upper body backward, the back frame member 5 falls backward, the treatment element 10 is pushed by the back, and the support member 3 can also fall backward.

  The support member 3 is provided with a rod-like connecting member 26 that is connected to the side member 5 a of the back frame member 5. The connecting member 26 connects the support member 3 and the back frame member 5 so that both of them can be integrally rotated. The connecting member 26 extends from the middle in the height direction of the support member 3 to the left and right sides and extends forward to be connected to the side member 5 a of the back frame member 5. Although the connecting member 26 is interposed between the back frame member 5 and the support member 3, the connecting member 26 can be elastically deformed so that the back frame member 5 can be supported with respect to the support member 3 in a side view. Can move in the direction of approaching. Further, since the planar member 4 of the backrest 2 is made of an elastically deformable (stretchable) material, the user leans against the planar member 4 and the backrest 2 and the support member 3 fall backward. The planar member 4 can be elastically deformed by applying a large load (upper body weight) to the planar member 4, and the gap g between the planar member 4 and the treatment element 10 can be eliminated. The back can be pressed by the treatment element 10.

  Further, an elastic member 11 made of a coil spring is provided in the second pipe member 23 of the second backward inclined portion 9, one end of which is fixed in the pipe member 23, and the other end is the support member 3. Is in contact with the lower end surface of the second bending portion 25. Accordingly, when the support member 3 is tilted rearward, the bending portion 25 moves forward in the pipe member 23 toward the base member 15 against the elastic force of the elastic member 11, and the elastic member 11 is compressed. When the support member 3 falls to the rear (FIG. 6), the elastic member 11 can return the support member 3 to the standing state by the restoring force. When the support member 3 and the back frame member 5 are connected by the connecting member 26, the back frame member 5 can be returned to the upright state with the return operation of the support member 3 by the elastic member 11. As a result, the user can easily return to the normal sitting posture in which the backrest portion 2 stands up from the state where the user leans back against the backrest portion 2 and falls backward. Furthermore, by adjusting the magnitude of the spring constant in the elastic member 11, the strength of the drag when the backrest 2 is tilted backward can be changed.

The support member 3 can be tilted backward together with the backrest portion 2 by the second rearward inclined portion 9, and this chair includes a lock mechanism 7 that maintains the support member 3 in an upright state. That is, by the switching operation of the lock mechanism 7, the backrest 2 and the support member 3 can be tilted backward or can be maintained in an upright state. The lock mechanism 7 is attached to the base member 15 of the seat portion 1 and can be easily operated while sitting.
The lock mechanism 7 attached to the base member 15 prevents the support member 3 fixed to the armrest member 20 from falling backward via the support column member 21 for the armrest member 20 and the armrest member 20. It is configured so that it can be regulated. That is, since the support member 3 rotates about the common horizontal line H, the armrest member 20 fixed to the support member 3 and the support column member 21 fixed to the support member 3 also rotate about the common horizontal line H. Will be. Therefore, the lock mechanism 7 restricts the rotation of the support member 3 by restricting the rotation of the lower end portion of the support column member 21.

  5 to 7, the lock mechanism 7 includes an operation lever 27 and a locking member 28 that is displaced (rotated) in response to the operation lever 27. The locking member 28 supports the locking mechanism 28. The contact member 29 can be prevented from rotating by contacting the contact member 29 formed at the lower end of the column member 21, and the locking member 28 and the contact member 29 can be separated from each other. The rotation of the contact portion 29 is allowed. Therefore, the support member 3 can be restrained in an upright state or can be tilted backward by switching the operation lever 27 of the lock mechanism 7. Thereby, the backrest part 2 can be maintained in an upright state, or can be greatly tilted backward.

  Although the embodiment has been described in which the rear portion of the armrest portion 20 is fixed to the support member 3 so that the support member 3 can be prevented from falling backward by the lock mechanism 7. The rear portion of the portion 20 may be fixed to the back frame member 5 of the backrest portion 2 so that the locking mechanism 7 can prevent the backrest portion 2 from falling down. Further, the lock mechanism 7 may be provided at a portion other than the seat portion 1.

  The attachment structure of the treatment element 10 will be described. As shown in FIGS. 4 to 6, a block body 30 is attached to the support member 3, and the block body 30 moves along the longitudinal direction of the support member 3. Possible and fixed at any position. That is, the block body 30 includes, for example, a main body 30a and a male screw member 30b that fixes the main body 30a and the support member 3. By inserting the male screw member 30b into the main body 30a and screwing it into a female screw hole (not shown) formed in the support member 3, the main body 30a can be fixed to the support member 3. And the treatment element 10 is attached to the main-body part 30a of the block body 30 via the rod-shaped connection member. As a result, the position of the treatment element 10 can be changed along the longitudinal direction of the support member 3. Furthermore, the treatment element 10 (the connecting member) is rotatably attached to the block body 30 and can follow the shape of the back and the magnitude of the load from the back. Moreover, the treatment element 10 may be attached so that position adjustment is possible in the direction approaching or separating from the planar member 4 side.

  Further, the treatment element 10 is attached to a plurality of locations including the upper end portion of the support member 3. In FIG. 4, it is provided in four places so as to correspond to the left and right sides on the back side of the upper body, the upper part, and the lower part, and a plurality (two or four) of treatment elements 10 are provided in each of these parts. It has been. The treatment elements 10 corresponding to the left and right side parts and the lower part of the back are attached by the block body 30 in the middle of the support member 3 in the height direction, but the treatment element 10 provided at the upper end of the support member 3 is The rotary arm member 31 is rotatably attached. And the treatment element 10 of this upper end part can be hold | maintained at arbitrary angles.

  Since the position of the treatment element 10 can be adjusted in this way, it is possible to change the part to which the treatment element 10 is to be brought into contact, and to cope with the difference in the position of the acupuncture point due to the difference in height. In particular, according to the treatment element 10 at the upper end, by adjusting the angle, the treatment element 10 can be made to correspond to the shoulder part from the neck part to users of various heights. Further, the position adjustment of the treatment element 10 may be performed by electric power other than by manual operation. Although not shown, the treatment element 10 may be attached to the seat portion 1 as well.

  Moreover, the chair with a massage function of the present invention is not limited to the illustrated form, and may have other forms within the scope of the present invention. For example, the first and second rearwardly inclined portions 8 and 9 are provided. 5 and FIG. 6, in addition to the pipe members 22 and 23, an elastically deformable portion can be used. In other words, each of the back frame member 5 and the support member 3 may be provided with an elastic deformation portion, and the elastic deformation portion may be elastically deformed so as to fall backward. That is, in the chair shown in FIG. 2 and FIG. 3, the back frame member 5 and the support member 3 are elastically deformed to cause both to fall backward. In this case, each of the entire back frame member 5 and the support member 3 may be elastically deformed as an elastic deformation part, or the elastic deformation part may be a part (for example, only the lower part).

  Moreover, the chair of this invention should just make the planar member 4 and the supporting member 3 of the backrest part 2 relatively accessible, although not shown, the supporting member 3 is the backrest part 2 (planar member 4). ) May be configured to be accessible. That is, the horizontal portion at the lower part of the support member 3 can be moved back and forth in the base member 15, and the support member 3 can move forward so that the treatment element 10 and the planar member 4 approach and contact each other. Good.

It is a perspective view showing one embodiment of a chair with a massage function concerning the present invention. It is a side view which shows the chair with a massage function, and has shown the non-massage state. It is a side view which shows the chair with a massage function, and has shown the massage state. It is a rear view which shows other embodiment of the chair with a massage function. It is a side view of the chair with a massage function of FIG. 4, and has shown the non-massage state. It is a side view of the chair with a massage function of FIG. 4, and has shown the massage state. It is explanatory drawing explaining a locking mechanism.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Seat part 2 Backrest part 3 Support member 4 Planar member 5 Back frame member 6 Switching means 7 Lock mechanism 8 1st back tilt part 9 2nd back tilt part 10 Therapeutic element 11 Elastic member g Gap

Claims (9)

  A seat portion, a backrest portion having a planar member that abuts the back side of the upper body, and a support member to which a treatment element is attached behind the planar member, and pressing the planar member When the planar member is provided so as to be accessible to the support member, in a sitting state where the back of the upper body is in contact with the planar member, the non-massage state in which the treatment element does not press the back of the upper body; A chair with a massage function, wherein the treatment element is changeable to a massage state in which the back surface of the upper body is pressed.   A support for attaching a treatment element so that a gap is formed between the seat portion, a backrest portion having a planar member that abuts the back side of the upper body, and the planar member behind the planar member. A first state in which the gap is maintained, the gap is eliminated, and the planar member and the support member are provided so that the planar member and the support member are accessible. A chair with a massage function, characterized in that it can be changed to a second state in which the treatment element is in contact.   The backrest portion includes a back frame member to which the planar member is attached, and the back frame member and the support member are provided so as to be capable of relative positional changes, whereby the planar member is provided. The chair with a massage function according to claim 1 or 2, wherein the support member is accessible.   The massage function according to claim 3, further comprising a switching unit that switches between a restrained state that restricts a relative position change between the back frame member and the support member and a free state that allows the relative position change to be freely performed. Chair.   When the planar member is pressed against the back surface of the upper body, the backrest portion allows the backrest portion to fall backward from the standing state, and allows the support member to fall backward from the standing state. The chair with a massage function as described in any one of Claims 1-4 provided with the 2nd backward inclination part.   The chair with a massage function according to claim 5, further comprising a lock mechanism that maintains at least one of the backrest and the support member in an upright state.   The said 2nd back inclination part has the elastic member which provides the said support member with the elastic force of the direction which returns the said support member in the state fallen back to the standing state. Chair with massage function.   The said treatment element is a chair with a massage function as described in any one of Claims 1-7 attached to the said supporting member so that position change is possible.   The said treatment element is attached to several places including an upper end part in the said support member, The said treatment element provided in the upper end part can be rotated with respect to the said support member. The chair with a massage function according to the item.

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