JP2005185466A - Chair with reclining function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a chair with reclining function that can raise and tilt a backrest to a position desired by a user with a simple operation. <P>SOLUTION: This chair is provided with a seat section 20, a backrest 30 installed on one side of the seat section 20 in a way that it can be raised and tilted freely and an operation unit 70 for raising and tilting the backrest 30. When the backrest 30 is tilted, in the case the continuous operating time of the operation unit 70 is less than a prescribed time, the backrest 30 is tilted until operation of the operation unit 70 is stopped and in the case the operating time of the operation unit 70 exceeds the prescribed time, the backrest 30 is tilted down to a prescribed position. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a chair with a reclining function capable of adjusting a backrest part so that the backrest part can be tilted up and down.

In this type of chair with a reclining function for the backrest, the motor that tilts the backrest rotates at a high speed from low to high if the operation section (reclining switch) for operating the backrest is operated for a specified time. There is known one that shortens the time required for raising and lowering the backrest (see, for example, Patent Document 1).
JP 2000-93478 A

  However, it is necessary to continue operating the operation part for a long time until the backrest part is tilted to the user's desired position, and when the backrest part is tilted to the desired position, the operation part is released. Therefore, it was necessary to stop raising and lowering the backrest.

  The present invention has been made to solve such problems, and it is an object of the present invention to provide a chair with a reclining function capable of raising and lowering a backrest portion to a position desired by a user by a simple operation. And

  A first means for solving the above-described problem includes a seat, a backrest provided on one side of the seat so as to be tilted up and down, and an operation unit for operating the backrest to be tilted up and down. When the backrest is tilted, if the operation unit is continuously operated for less than a predetermined time, the backrest is tilted until the operation unit is not operated and the operation unit is operated continuously. When the running time exceeds a predetermined time, the backrest is configured to fall to a predetermined position.

  In the first means for solving the above-mentioned problem, the predetermined position may be a position where the backrest portion is tilted when it was used last time.

  In the first means for solving the above-mentioned problem, the predetermined position may be the most tilted position of the backrest portion.

  In addition, when the operation unit is operated again after canceling the operation of the operation unit until the backrest unit falls to a predetermined position after the time during which the operation unit is continuously operated exceeds a predetermined time. May be configured to stop the falling operation of the backrest.

  The second means for solving the above-mentioned problem includes a seat, a backrest provided on one side of the seat so as to be able to be tilted and an operation unit for operating the tilting of the backrest, When raising the backrest, if the operation portion is continuously operated for less than a predetermined time, the backrest rises until the operation portion is not operated and the operation portion is operated continuously. When the sitting time exceeds a predetermined time, the backrest is configured to get up to a predetermined position.

  In the second means for solving the above-mentioned problem, the predetermined position may be a position where the backrest portion is tilted when it was used last time.

  In the second means for solving the above-mentioned problem, the predetermined position may be the most upright position of the backrest.

  In addition, when the operation unit is operated again after canceling the operation of the operation unit until the backrest unit rises to a predetermined position after the time during which the operation unit is continuously operated exceeds a predetermined time. May be configured to stop the rising motion of the backrest.

  The chair with a reclining function may be provided with a massage device.

  According to the configuration of the first aspect of the present invention, the backrest portion can be brought down to any desired position by a simple operation of continuously operating the operation portion for a predetermined time, improving operability. The effect of being able to be made is produced.

  According to the configuration of claim 2 of the present invention, the backrest portion can be brought down to the position where it was used last time by a simple operation of continuously operating the operation portion for a predetermined time. The effect of being able to improve property etc. is produced.

  According to the configuration of claim 3 of the present invention, the backrest portion can be brought down to the most collapsed position by a simple operation of continuously operating the operation portion for a predetermined time, thereby improving the operability. There are effects such as being able to.

  According to the configuration of the fourth aspect of the present invention, even when the operation unit is continuously operated for a predetermined time and the backrest unit is continuously tilted, the backrest unit can be stopped by operating the operation unit again. As a result, it is possible to easily change the reclining position of the backrest.

  According to the configuration of claim 5 of the present invention, the backrest portion can be raised to any desired position by a simple operation of continuously operating the operation portion for a predetermined time, improving operability. The effect of being able to be made is produced.

  According to the configuration of claim 6 of the present invention, the backrest portion can be raised to the position where it was used last time by a simple operation of continuously operating the operation portion for a predetermined time. The effect of being able to improve property etc. is produced.

  According to the configuration of the seventh aspect of the present invention, the backrest portion can be raised to the most raised position by a simple operation of continuously operating the operation portion for a predetermined time, thereby improving the operability. There are effects such as being able to.

  According to the configuration of the eighth aspect of the present invention, even when the operation unit is continuously operated for a predetermined time and the backrest unit is continuously raised, the backrest unit can be stopped by operating the operation unit again. As a result, it is possible to easily change the reclining position of the backrest.

  According to the configuration of claim 9 of the present invention, there are effects such as being able to massage the user's body with the massage device.

(First embodiment)
The chair with a reclining function of the best first embodiment for carrying out the present invention will be described in detail below with reference to FIGS. FIG. 1 is a side view of a chair 10 with a reclining function provided with a link mechanism 50. The chair 10 with a reclining function includes a seat portion 20 on which a user sits, a backrest portion 30 that is supported at the rear end of the seat portion 20 so as to be tiltable, and a footrest 40 that is tiltably supported at the tip of the seat portion 20. And an armrest 12 formed upward from both sides of the seat portion 20. In addition, in FIG. 1 etc., the state which removed the armrest 12 on the paper front side is shown.

  The seat portion 20 has a plurality of leg portions 24 projecting downward from a seat portion frame 22 disposed on the lower surface, and a lower end of the leg portion 24 is connected to a leg plate 26 extending in parallel.

  The footrest 40 is for placing a part below the user's knee, mainly a calf, and a massage device such as a roller, an air bag, a vibration unit, etc. can be provided inside, and the outer periphery is covered. And is surrounded by cushions. A frame 42 is passed through the back surface of the footrest 40, that is, the surface opposite to the side on which the user's foot is placed, and the base end of the frame 42 protrudes from the footrest 40 and rotates to the seat frame 22. It is connected freely. The frame 42 of the footrest 40 is provided with a receiving portion 57 described later.

  The backrest part 30 is a part above the user's waist, that is, a part where the back and head come into contact with each other. Is surrounded by a cover or cushion. Near the lower end of the backrest 30, a frame 34 that is pivotably connected to the seat frame 22 is provided, and a second link 55 described later is rotatable at the lower end of the backrest 30. A lower frame 36 to be connected is provided. The backrest 30 tilts around the connecting portion with the seat frame 22.

  As the reclining device 32 for the backrest 30 and the footrest 40, an electric device whose length is changed by converting the rotational force of a motor (not shown) into screw thrust can be illustrated. As shown in FIG. Is attached near the front end of the seat frame 22, and the other end is connected to the lower frame 36 of the backrest 30. The reclining device 32 is not limited to an electric one, and may be operated by a hydraulic piston.

  The illustrated reclining device 32 can be operated by the operation unit 70. When the user presses the reclining fall key 72 of the operation unit 70, the reclining device 32 contracts due to the screw thrust, the lower end of the backrest 30 is pulled forward, the backrest 30 falls down, and the operation unit 70 is reclined. When the waking key 74 is pressed, the reclining device 32 is extended by the screw thrust, and the lower end of the backrest 30 is pushed backward to raise the backrest 30.

  The backrest 30 and the footrest 40 are connected by a link mechanism 50 as shown in FIG. The link mechanism 50 includes a first link 51 that is rotatably supported at the front end of the leg plate 26 and a second link 55 that connects the first link 51 to the lower frame 36 of the backrest 30.

  In the first link 51, a roller 52 is rotatably disposed on the free end side. Further, the upper side of the center of the first link 51 is bent toward the rear, and a connecting shaft 53 projects from the bent portion toward the rear.

  One end of the second link 55 is rotatably connected to the tip of the connecting shaft 53 of the first link 51, and the other end is connected to the lower frame 36 of the backrest 30. As shown in FIGS. 6 and 7, the second link 55 can be folded at a substantially central portion for convenience of delivery and storage described later. When the user uses the chair 10 with the reclining function, the folding portion is unfolded and can be locked in a straight state. The foldable configuration of the second link 55 will be described later.

  The front end roller 52 of the first link 51 is in contact with a receiving portion 57 whose both ends are fixed to the back frame 42 of the footrest 40 so as to allow rolling. As shown in FIG. 1, the receiving portion 57 protrudes in a direction in which a substantially central portion is separated from the footrest 40 and is bent into a dogleg shape. Incidentally, the reason why the receiving portion 57 is bent in a dogleg shape as shown in the drawing is that when the backrest portion 30 is slightly tilted from the most upright state, the footrest 40 is adjusted so that the degree of elevation of the footrest 40 becomes the largest. Yes, as long as such an operation can be maintained, the shape is not necessarily limited to the dogleg shape.

  Operation | movement of the chair 10 with a reclining mechanism provided with the link mechanism 50 of the said structure is demonstrated. As shown in FIG. 1, the backrest 30 is most upright (in the figure, the angle of the backrest 30 is about 60 degrees from the horizontal plane), and the footrest 40 is pushed down most (in the figure, the angle of the back surface of the footrest 40). Is about 90 degrees from the horizontal plane), the reclining device 32 is driven and the reclining device 32 is contracted. As a result, the lower end of the backrest 30 is pulled forward, and the backrest 30 tilts backward about the connecting portion with the seat frame 22. Further, as the reclining device 32 tilts backward, the second link 55 connected to the lower frame 36 of the backrest 30 moves forward, and the first link 51 is tilted forward via the connecting shaft 53. Let By the forward tilting operation of the first link 51, the tip roller 52 of the first link 51 pushes up the receiving portion 57 while rolling on the receiving portion 57 of the footrest 40, and the footrest 40 moves the connecting portion with the seat frame 22. It is lifted upward as a center (see FIG. 2). As described above, since the receiving portion 57 is bent in a dogleg shape, the lifting angle of the footrest 40 when the receiving portion 57 is pushed up by the roller 52 is larger than when the receiving portion 57 is horizontal. .

  FIG. 2 shows a state in which the backrest 30 is tilted to about 50 degrees from the horizontal plane. At this time, it can be seen that the footrest 40 is lifted up to about 50 degrees. As shown in FIG. 3, when the backrest 30 is further tilted about 10 degrees from the state of FIG. 2, that is, tilted to about 40 degrees from the horizontal plane, the footrest 40 tilts to about 25 degrees from the horizontal plane. As shown in FIG. 4, when the backrest 30 is further tilted by about 10 degrees from the state of FIG. 3, that is, tilted by about 30 degrees from the horizontal plane, the footrest 40 tilts by about 15 degrees from the horizontal plane. As shown in FIG. 5, even when the backrest 30 is further tilted by about 15 degrees from the state of FIG. 4, that is, when tilted by about 15 degrees from the horizontal plane, the footrest 40 remains tilted by about 15 degrees from the horizontal plane as in FIG. Is done.

  As described above, the tilting angle of the backrest 30 and the tilting angle of the footrest 40 are not in a proportional state, and the lifting angle of the footrest 40 is about 40 degrees, about 25 degrees every 10 degrees from the start of the tilting of the backrest 30. It is about 10 degrees, and at the last about 15 degrees, the footrest 40 cannot be lifted any further. That is, the footrest 40 is lifted at once when the backrest 30 is started to be tilted, and then the lifting angle is gradually reduced.

  By adjusting the lifting angle of the footrest 40 in this manner, the user can extend his / her foot on the raised footrest 40 even at a slight tilt angle of the backrest 30 and is comfortable, and the backrest When the tilting angle of the portion 30 is small, the user's center of gravity is in the seat portion 20, and at this time, since the lifting angle of the footrest 40 is increased, the user does not slide forward from the chair 10 with the reclining mechanism.

  When the backrest 30 is raised from a state in which the backrest 30 is tilted, when the reclining waking key 74 of the operation unit 70 is pressed, the reverse path (FIG. 4 → FIG. 3 → FIG. 2) is followed. . That is, when the backrest 30 starts to be raised, the footrest 40 is pushed down only a little, and the footrest 40 is pushed down greatly immediately before the backrest 30 stands up most. Accordingly, even when the backrest 30 is raised, the user does not slide forward from the chair 10 with the reclining mechanism.

  6 and 7 show that the second link 55 can be folded in order to reduce the height and shorten the length when the chair 10 with the reclining mechanism is delivered and stored. As shown in FIGS. 6 and 7, the second link 55 can be composed of a proximal link lever 60 connected to the backrest 30 and a distal link lever 63 connected to the connecting shaft 53. The link levers 60 and 63 are formed by bending a plate in a U-shape, the proximal end side link lever 60 has a groove portion opened upward, and the distal end side link lever 63 has a groove portion opened downward. FIG. 7 shows a cross-sectional view with the front side wall of the paper removed for easy understanding. A distal end side link lever 63 is rotatably connected to the proximal end side link lever 60, and a concave portion 61 that engages with a locking piece 64 provided on the distal end side link lever 63 is provided at the distal end. Further, the proximal end side link lever 60 and the distal end side link lever 63 are urged by a torsion spring 66 in the folding direction, that is, in the direction of preventing the expansion.

  The distal end side link lever 63 is provided with a locking piece 64 that can be engaged with the recess 61 of the proximal end side link lever 60 so as to be movable in the longitudinal direction of the link lever 63. It is arranged in a state of being spring-biased toward the proximal end side link lever 60 so as to protrude into the transition path.

  As shown in FIGS. 1 and 7A, the second link 55 is in a state in which the locking piece 64 is fitted in the recess 61 and the link levers 60 and 63 are deployed in a straight line, as shown in FIGS. Since the locking piece 64 is biased toward the concave portion 61, the locking piece 64 does not fall out of the concave portion 61 in the used state.

  As shown in FIG. 7, when the locking piece 64 is pushed out from the recess 61, both the link levers 60 and 63 can be folded at the connecting portion. When the backrest 30 is tilted from this state, the link levers 60 and 63 are folded into a V shape by the urging force of the torsion spring 66 as shown in FIGS. 6 and 7C. When the link levers 60 and 63, that is, the second link 55 is linear, the backrest 30 cannot be tilted independently with respect to the footrest 40, but the link levers 60 and 63 can be folded. As shown in FIG. 6, the backrest 30 can be tilted backward with the footrest 40 pushed down most. The reclining function chair 10 can be delivered and stored with a low height, a short length, and a small overall volume.

  When the user uses the chair 10 with the reclining function, the reverse of the above is performed against the urging force of the torsion spring 66 by raising only the backrest 30 with the footrest 40 depressed most. Following the path, the link levers 60, 63 are deployed, the locking piece 64 moves along the end surface of the link lever 60, engages with the recess 61, and the link levers 60, 63 are integrated into a linear shape. Thereafter, as shown above and in FIGS. 1 to 5, the footrest 40 and the backrest 30 tilt in conjunction with each other. In other words, after the purchase, the user can wake up the backrest 30 once and use it as the chair 10 with the reclining function in which the footrest 40 and the backrest 30 are interlocked without requiring any other special operation. it can.

  FIG. 9 shows a control block diagram of the chair 10 with a reclining function. The main body control unit 80 is built in the chair 10 with a reclining function. The main body control unit 80 includes a massage operation key 75 provided in the operation unit 70 for automatically or manually performing massage such as fisting, tapping, and shiatsu, a reclining fall key 72 for tilting the backrest 30, and a backrest 30. Reclining wake-up keys 74, the most tilted position detection SW 81 for detecting the position where the backrest 30 is most tilted, and the signal from the most recent position detection SW 82 for detecting the position where the backrest 30 is most raised are input and massage is performed. A rice motor driving circuit 83 for driving a rice motor (not shown) for driving, a tapping motor driving circuit 84 for driving a tapping motor (not shown) for tapping massage, a lifting motor driving circuit 85 for driving a lifting motor for raising and lowering a treatment finger (not shown), Acupressure motor drive circuit 86 for driving an acupressure motor (not shown) that performs acupressure massage and a dorsal fin And outputs a signal to the reclining motor drive circuit 87 for driving the reclining motor (not shown) of the reclining apparatus 32 parts 30. In addition, the main body control unit 80 is provided with detection means for detecting the reclining position of the backrest 30 and is equipped with a nonvolatile memory for storing the reclining position.

In the chair 10 with the reclining function configured as described above, the backrest 30 is reclined to an arbitrary position and used according to the user's preference. When the use is finished, the backrest 30 is raised due to the storage space of the chair 10 with the reclining function.
And when using again, the reclining fall key 72 is pushed, and the backrest part 30 is fallen to the favorite arbitrary position used last time, for example.

  When the reclining tilt key 72 is pressed to tilt the backrest 30, the backrest 30 is tilted only while the reclining tilt key 72 is pressed. If the conventional configuration is adopted, the backrest 30 is tilted to any desired position. In order to do so, the reclining collapse key 72 must be kept pressed, which makes the operation troublesome.

  Therefore, in the first embodiment, the main body control unit 80 simply presses the reclining tilt key 72 for a shorter time than the time that the reclining tilt key 30 must be pressed to tilt the backrest 30 to a desired position. The backrest 30 can be brought down to the preferred reclining position stored at the previous use.

  This control will be described in detail based on the flowchart shown in FIG. When the operation unit 70 power key 76 of the chair 10 with the reclining function is pressed (S1), the main body control unit 80 determines whether or not the reclining fall key 72 is pressed (S2). When the reclining tilt key 72 is pressed in S2, the reclining motor driving circuit 87 drives a reclining motor (not shown) to tilt the backrest 30 (Y in S2 → S3).

It is determined whether or not the reclining fall key 72 is kept pressed (S4), and if the reclining fall key 72 is kept pressed for a predetermined time (2 seconds in the first embodiment) in S4, the main body control unit 80 stores it. The backrest 30 is tilted down to the reclining position of the backrest 30 at the time of the previous use (Y of S4 → S5). When the backrest 30 reclines toward the position at the previous use, the reclining motor is stopped (Y in S6 → S7). When the reclining tilt key 72 is pressed again before the backrest 30 is reclined to the previous use position, the reclining of the backrest 30 stops at that position (N in S6 → Y in S8 → S7). In addition, if the reclining fall key 72 is released before the predetermined time has elapsed in S4, the reclining is stopped at that time (N in S4 → Y in S2 → S7).
Since the chair 10 with the reclining function of the first embodiment is configured as described above, the backrest 30 is tilted to the reclining position at the previous use by a simple operation of pressing the reclining tilt key 72 for 2 seconds or longer. And operability can be improved.

  Further, the reclining position of the backrest 30 can be stopped by pressing the reclining tilt key 72 again until the backrest 30 falls to the reclining position at the previous use. Changes can be made easily.

  In the first embodiment, the configuration in which the backrest 30 is reclined to the position at the previous use by long pressing of the reclining tilt key 72 has been described in detail. You may provide the structure which reclines the drowning part 30 to the position at the time of last use.

  In the first embodiment, there is provided a massage device such as fir tree, tapping and acupressure, but it is not limited to this configuration. You may make it the chair 10 with a reclining function without a massage apparatus.

(Second Embodiment)
FIG. 11 shows a flowchart of the second embodiment of the present invention. In the first embodiment, the reclining tilt key 72 is long-pressed to recline the backrest 30 to the reclining position of the backrest 30 at the previous use. However, in the second embodiment, the reclining tilt key 72 is By the long press, the backrest 30 is reclined to the most collapsed position.

  This control will be described in detail based on the flowchart shown in FIG. When the operation unit 70 power key 76 of the chair 10 with the reclining function is pressed (S1 ′), the main body control unit 80 determines whether or not the reclining fall key 72 is pressed (S2 ′). When the reclining tilt key 72 is pressed in S2 ′, the reclining motor drive circuit 87 drives a reclining motor (not shown) to tilt the backrest 30 (Y in S2 ′ → S3 ′).

  It is determined whether or not the reclining fall key 72 is kept pressed (S4 ′). If the reclining fall key 72 is kept pressed for a predetermined time (2 seconds in the second embodiment) in S4 ′, the backrest 30 is pushed to the maximum. Tilt toward the fall position (Y of S4 ′ → S5 ′). When the backrest 30 reclines to the most tilted position, the reclining motor is stopped (Y in S6 ′ → S7 ′). When the reclining fall key 72 is pressed again before the backrest 30 is reclined to the most collapsed position, the reclining of the backrest 30 stops at that position (N in S6 ′ → Y in S8 ′ → S7 ').

  Since the chair 10 with the reclining function of the second embodiment is configured as described above, the backrest part 30 can be brought down to the most collapsed position by a simple operation of pressing the reclining fall key 72 for 2 seconds or longer. The operability can be improved.

  In addition, by pressing the reclining fall key 72 again until the backrest 30 falls to the most collapsed position, the reclining of the backrest 30 can be stopped and the reclining position of the backrest 30 can be easily changed. Can be done.

  In the second embodiment, the configuration in which the backrest 30 is reclined to the most tilted position by long pressing of the reclining tilt key 72 has been described in detail. You may provide the structure which reclines 30 to the most rising position.

BRIEF DESCRIPTION OF THE DRAWINGS It is a side view of the chair with a reclining function of the best 1st Embodiment for implementing this invention, Comprising: The state which raised the backrest part most (about 60 degree | times from a horizontal surface) is shown. It is a side view of the chair with a reclining function, Comprising: The backrest part has shown the state which fell to about 50 degree | times from the horizontal surface. It is a side view of the chair with the reclining function, Comprising: The backrest part has shown the state which fell to about 40 degree | times from the horizontal surface. It is a side view of the chair with the reclining function, Comprising: The backrest part has shown the state which fell to about 30 degree | times from the horizontal surface. It is a side view of the chair with a reclining function, Comprising: The backrest part has shown the state which fell to about 15 degree | times from the horizontal surface. It is a side view which shows the state which pushed down the footrest most and delivered the backrest part most, in order to deliver and store the chair with the reclining function. It is sectional drawing which shows the change from the linear state of the said 2nd link to the folded state. It is a front view of the operation part. It is a block diagram of the same main body control part. It is a flowchart which shows control of the main body control part. It is a flowchart which shows control of the main body control part of the chair with a reclining function of the best 2nd Embodiment for implementing this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Chair with reclining mechanism 20 Seat part 30 Backrest part 32 Reclining apparatus 70 Operation part

Claims (9)

A seat part, a backrest part provided on one side of the seat part so as to be tiltable and an operation part for operating the backrest part to be tilted, and when the backrest part is tilted, the operation part is continuous. When the operating time is less than a predetermined time, the backrest part falls down until the operating part is not operated, and when the operating part is operated continuously for a predetermined time, A chair with a reclining function, wherein the backrest is configured to fall to a predetermined position. The chair with a reclining function according to claim 1, wherein the predetermined position is a position where the backrest portion is tilted when used last time. The chair with a reclining function according to claim 1, wherein the predetermined position is a most tilted position of a backrest portion. If the operation unit is operated again after canceling the operation of the operation unit until the backrest unit falls to a predetermined position after the time that the operation unit is continuously operated exceeds a predetermined time, The chair with a reclining function according to any one of claims 1 to 3, wherein the chair is configured such that the falling operation of the backrest portion is stopped. A seat part, a backrest part provided on one side of the seat part so as to be able to be tilted and an operation part for operating the backrest part to be raised and lowered. If the operating time is less than the predetermined time, the backrest will get up until the operating portion is no longer operated, and if the operating time of the operating portion has exceeded the predetermined time, A chair with a reclining function, wherein the backrest portion is configured to get up to a predetermined position. The chair with a reclining function according to claim 5, wherein the predetermined position is a position where the backrest portion is tilted when used last time. The chair with a reclining function according to claim 5, wherein the predetermined position is a most raised position of a backrest portion. When the operation unit is operated again after releasing the operation of the operation unit until the backrest part rises to a predetermined position after a predetermined time exceeds the time during which the operation unit is operated, The chair with a reclining function according to any one of claims 5 to 7, wherein the raising operation of the backrest portion is stopped. The chair with a reclining function according to any one of claims 1 to 8, wherein the chair with a reclining function includes a massage device.

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