JP3113404U - A chair that can automatically lie down and stand up - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chair that can automatically lie down and stand up, which can have better support stability and smooth operation.
A pivot part 11 that pivots on a motor 41 is provided in front of a pedestal 1, a support part 12 that receives the seat part 2 is provided in the rear, and a transmission plate 43 is pivoted in the center of a seat frame 21 of the seat part 2. A connecting portion 22 is provided, a pivoting portion 23 that pivots behind the seat frame 21 is provided below the backrest frame 31 of the backrest 3, and a pivoting portion 331 is provided below the backrest frame 21 to pivot the transmission plate 43. The connecting rod 34 is pivotally connected, and the transmission mechanism 4 can be operated with a telescopic rod 42 by a motor 41, and is provided so that the telescopic rod 42 is directed toward the center position of the seat 2. The receiving part 431 is provided on the front side, and the pivot parts 432, 433, and 434 are provided on the upper and lower sides of the front side and the upper side of the rear side, respectively, and separately pivot on the joint part 22, the backrest frame 31, the connecting rod 34, and the telescopic rod 42. .
[Selection] Figure 2

Description

  The present invention relates to a chair capable of automatically tilting the backrest or raising the seat portion for the convenience of raising the body.

In order to promote convenience and comfort in use, the conventionally known chair has a function that can lie down and wake up automatically, and can be operated conveniently for people with disabilities to wake up. It is designed.
9 and 10 is one of the structures known in the art, and mainly comprises a base 10 ', a seat 11', a backrest 12 ', a transmission mechanism 13', and a footrest mechanism 14 '. The transmission mechanism 13 ′ includes a motor 131 ′ and a telescopic rod 132 ′, one end of the motor 131 ′ is pivotally connected to the rear of the pedestal 10 ′, and the telescopic rod 132 ′ is provided from the rear to the front of the pedestal 10 ′. The front end is pivotally connected to the front of the seat portion 11 ′, and the backrest 12 ′ and the seat portion 11 ′ are pivotally combined to be combined, and the footrest mechanism 14 ′ is joined in conjunction with the seat portion 11 ′ and the transmission mechanism 13 ′. Therefore, when the telescopic rod 132 ′ is contracted, the backrest 12 ′ can be tilted backward or the footrest mechanism 14 ′ can be extended, and when the telescopic rod 132 ′ is extended, the backrest 12 ′ and the footrest mechanism 14 ′ can be moved. Raise the back of the seat 11 'while contracting Since it can be rubbed, it is convenient when the seated person wakes up.

  However, in the structure described above, the center of gravity of the seated person is usually near the center of the seat 11 ′, but the position where the telescopic rod 132 ′ of the transmission mechanism 13 ′ applies force is at the front end of the seat 11 ′. Therefore, the stability of the operation is not good, and the telescopic rod 132 ′ is provided from the rear to the front of the base 10 ′, so that the direction in which the force is applied is directly with the center rear position in the seat 11 ′. This resulted in a drawback that the supportability when the seat 11 'was raised behind the seat 11' was deteriorated.

  11 and 12 show another structure, which mainly comprises a pedestal 20 ', a seat 21', a backrest 22 ', a transmission mechanism 23', and a footrest mechanism 24 '. The mechanism 23 ′ includes a motor 231 ′ and a telescopic rod 232 ′. The telescopic rod 232 ′ is provided from the front to the rear of the pedestal 20 ′, the top end is joined to the backrest 22 ′, and the backrest 22 ′ is the seat portion 21. Since the footrest mechanism 24 ′ is joined to the transmission mechanism 23 ′ and the seat portion 21 ′, when the telescopic rod 232 ′ is contracted, the backrest 22 ′ is tilted backward or the footrest mechanism 24 ′ is extended. Further, when the telescopic rod 232 ′ is extended, the backrest 22 ′ and the footrest mechanism 24 ′ can be contracted and the rear of the seat portion 21 ′ can be raised.

  However, in the structure described above, the position where the front end of the telescopic rod 232 ′ is applied is at a position corresponding to the back end 22 ′ and the rear end of the seat portion 21 ′. Does not correspond to the center rear position), causing a drawback that the supportability is deteriorated when the seat 21 'is raised rearward.

  The chair described in the claims of the present invention mainly has a pedestal, a seat, a backrest, and a transmission mechanism, and a pivot part for pivoting with the motor of the transmission mechanism is provided in front of the pedestal, and the seat part in the rear. A support part is provided for catching, and a seat frame is provided on the seat part, and a joint part for pivoting a transmission plate of a transmission mechanism described later is provided at an appropriate position in the center of the seat frame, and the backrest is provided. There is a back frame, and a connecting part for pivoting the rear of the seat frame is provided below the back frame, and a connecting rod for pivoting the transmission plate of the transmission mechanism by providing a pivot part below the back frame. There are a motor, a telescopic rod, and a power transmission plate in the pivoting mechanism. The motor can be operated with the telescopic rod, and the telescopic rod is directed toward the center of the seat. Provide a receiving part above the plate, Provide pivots on the upper side, lower side, and rear side, respectively, and separately pivot on the seat joint, back frame, connecting rod, and telescopic rod. When the telescopic rod is extended, it can be rotated with the transmission plate, and when the backrest is contracted, the receiving portion of the transmission plate holds the seat frame, causing the rear of the seat frame to rise. It is possible to provide better support stability and smoothness of operation over the entire operation.

Another object of the present invention is to provide a footrest mechanism so that the footrest mechanism can expand and contract in accordance with the operation of the transmission mechanism.
Another object of the present invention is to provide an armrest frame.
Still another object of the present invention is to provide a front and rear frame in the seat frame of the seat, and by combining the front and rear frames together to raise the rear of the seat, the front and rear This is because the frame can be bent.

  As shown in FIGS. 1 and 2, the chair according to the first embodiment of the present invention that can automatically lie down and stand up is a pedestal 1, a seat 2, a backrest 3, a transmission mechanism 4, and a footrest mechanism 5. The pedestal 1 is provided with a pivotal portion 11 for pivoting one end of a motor 41 of a transmission device 4 to be described later at the front center of the pedestal 1, and a support portion 12 for receiving the seat portion 2 at the rear. The connecting plate 13 is provided on both front sides of the pedestal 1, the pivot plate 131 is provided in the connecting plate 13 to pivot one end of the two connecting rods 14, and the other end of the two connecting rods 14 is the seat. Pivot to part 2.

  The seat 2 has a seat frame 21, and a joint 22 for pivoting a transmission plate 43 of a transmission mechanism 4 described later is provided at an appropriate center of the seat frame 21, and the transmission plate 43 is provided at the joint 22. There is a pivotal portion 221 for pivoting, a pivotal portion 23 pivotally connected to the backrest 3 is provided behind the seat frame 21, a connecting plate 24 is provided below both sides, and the connecting rod 24 is connected to the connecting rod 14. A pivot hole 241 for pivoting the other end of the seat frame 21 is provided, and a pivoting portion 25 for pivotally mounting the footrest mechanism 5 is provided in front of the seat frame 21.

  There is a backrest frame 31 on the backrest 3, pivot portions 32 are provided on both lower sides of the backrest frame 31, and are pivotally connected to a pivot portion 23 located behind the seat frame 21 by a pivotal part, and laterally below the backrest frame 21. A rod 33 is provided, and a pivotal portion 331 for pivoting one end of a connecting rod 34 pivoted by a pivotal part is provided at the center of the horizontal rod 33, and the other end of the connecting rod 34 is pivoted with the transmission plate 43. Touch.

  The transmission mechanism 4 is mainly composed of a motor 41, a telescopic rod 42, and a transmission plate 43. One end of the motor 41 is pivotally connected to the pivotal portion 11 in front of the base 1, and the telescopic rod 42 can be connected to the telescopic operation. The front end of the telescopic rod 42 is pivotally connected to the transmission plate 43 by a pivotal part toward an appropriate position at the center behind the seat portion 2, and the transmission plate 43 is composed of two plates. Provided at the position of the joint portion 22 of the frame 21, a receiving portion 431 is provided above the transmission plate 43, and pivotal portions 432, 433, 434 are respectively provided above the transmission plate 43, below the rear side, and above the rear side. The pivot part 432 pivots with the joint part 22 of the seat part 2 by a pivot part 432, and the pivot part 433 pivots with the back frame 31 and one end of the connecting rods 34 and 53 of the footrest mechanism 5 described later. In addition, the pivotal portion 434 is a telescopic rod 42. To pivot contact.

  The footrest mechanism 5 includes a crank mechanism 51, a footrest frame 52, and a connecting rod 53, and both ends of the crank mechanism 51 are pivotally connected to the pivot portion 25 and the footrest frame 52 in front of the seat frame 21, respectively. The crank mechanism 51 is provided with a pivot portion 511 for pivotally connecting one end of the connecting rod 53, and the other end of the connecting rod 53 is pivotally connected to the pivot portion 433 below the front side of the transmission plate 43.

  In the first embodiment, when the telescopic rod 42 contracts by using the motor 41 of the transmission mechanism 4 by the above combination, the transmission plate 43 starts to move, and the pivot part 432 on the upper front side is rotated. As the rear side of the transmission plate 43 is moved downward, the lower part of the front side of the transmission plate 43 is moved forward correspondingly, so that the connecting rod 34 of the backrest frame 31 is moved back and the backrest frame 31 is moved. At the same time as moving the connecting rod 53 of the footrest mechanism 5 forward, the crank mechanism 51 extends forward, and the footrest frame 52 is raised. Let

  As shown in FIG. 3, in the first embodiment, when the motor 41 is activated and the telescopic rod 42 is extended, the rear side of the transmission plate 43 can be moved upward, and the connecting rod 34 of the back frame 31 and By allowing the connecting rod 53 of the footrest mechanism 5 to move backward correspondingly, the backrest frame 31 can be raised or the footrest mechanism 5 can be contracted.

As shown in FIG. 4, in the first embodiment, when the seated person wakes up, the telescopic rod 42 is extended so that the receiving portion 431 of the transmission plate 43 receives the joint portion 22 of the seat frame 21. Therefore, it becomes convenient for the seated person to wake up by raising the back of the seat frame 21 or moving the front downward. When the seat frame 21 moves upward, both sides of the seat frame 21 are joined to the connecting plate 13 of the base 1 by the connecting plate 24 and the connecting rod 14, so that the operation mechanism and the stability of the support are further improved. Since the force is applied from the front to the rear and the force is applied toward the center of gravity of the seat frame 21, more excellent operational stability can be obtained.
As shown in FIG. 5, the seat frame 21 in the first embodiment can be provided with an armrest frame 6 connected to promote the comfort of sitting.

  As shown in FIG. 6, the chair according to the second embodiment of the present invention that can automatically lie down and stand up is composed of a base 71, a seat 72, a backrest 73, a transmission mechanism 74, and a footrest mechanism 75. A pivot portion 711 for pivotally connecting one end of a motor 741 of a transmission device 74 to be described later is provided at the front center of the base 71, and a support portion 712 for receiving the seat portion 72 is provided at the rear. A pivot part 713 for pivoting with the front of a rear frame body 723, which will be described later, is provided on the front side, and a pivot part 714 for pivotally mounting the footrest mechanism 75 is provided on the front side of the base 71. The connecting portion 715 is installed to pivot one end of the connecting rod 716, the other end of the connecting rod 716 is pivotally connected to the seat 72, and the pedestal 71 is provided with an armrest frame 717.

  The seat portion 72 includes a seat frame 721, and the seat frame 721 includes front and rear frame bodies 722 and 723. The front and rear frame bodies 722 and 723 are pivotally combined and the rear frame body 723 of the seat frame 721 is combined. A joint portion 724 for pivotally mounting a transmission plate 743 of a transmission mechanism 74 described later is provided at an appropriate position in the center, and a joint portion 725 for pivotally mounting the transmission plate is provided at the joint portion 724. A pivot part 726 for pivoting the pedestal 71 is installed at the front end of the front frame body 722 of 721, and a pivot part 727 for pivoting the backrest 73 is provided on the rear frame body 723, and connected at the pivot part 728. The other end of the rod 716 is pivoted, and the other end of the connecting rod 716 is pivotally connected to the base 71.

  The backrest 73 has a backrest frame 731, a pivotal portion 732 is provided below the backrest frame 731 and pivotally connected to the seat frame 721 by a pivotal part, and a lateral rod 733 is provided at the bottom end to pivot the lateral rod 733. 734, 735 are provided, and one end of a connecting rod 736 is provided at the pivot portion 734, the other end of the connecting rod 736 is pivotally connected to the transmission plate 743, and one end of the connecting rod 737 is connected to the pivot portion 735. And an elongated slot 7371 is provided at the other end of the connecting rod 737 to join the footrest mechanism.

  The transmission mechanism 74 mainly includes a motor 741, an expansion rod 742, and a transmission plate 743. One end of the motor 741 is pivotally connected to a pivot portion 711 in front of the base 71 and can be operated with the expansion rod 742. The front end of the rod 742 is pivotally connected to the transmission plate 743 toward the central position behind the seat 72, and a receiving portion 7431 is provided above the transmission plate 743. The pivot portions 7432, 7433, and 7434 are provided at the upper side, and are pivotally connected to one end of the connecting rod 736 of the seat portion 72 and the back frame 73 and the telescopic rod 742, respectively, by pivotal parts.

  The footrest mechanism 75 includes a crank mechanism 751 and a footrest frame 752, and both ends of the crank mechanism 751 are pivotally connected to a pivot portion 714 and a footrest frame 752 at the front bottom portion of the base 71, respectively, and the crank mechanism 751 is a joined part. Is joined to the slot 7371 of the connecting rod 737 outside the backrest frame 73, and one end of the elastic part 753 is connected to the crank mechanism 751, and the other end of the elastic part 753 is connected to the horizontal rod of the base 71 (see FIG. Join with (not shown in).

  When the motor 741 orders the contraction of the telescopic rod 742, the transmission plate 743 is brought with it, and the rear side can be moved downward by rotating the pivot portion 7432 on the upper front side as the rotation axis. By correspondingly moving the lower front side forward, the connecting rod 736 of the backrest frame 731 is moved forward, and the backrest frame 731 is moved to be tilted backward, and at the same time, the connecting rod below the backrest frame 731 is operated. By moving the rod 737 forward, the elastic part 753 is stretched while extending forward with the crank mechanism 751 and raising the footrest frame 752.

As shown in FIG. 7, when the motor is activated in the second embodiment, the backrest frame 731 can stand up because the telescopic rod 742 can be moved upward with the rear side of the transmission plate 743 after extending. The crank mechanism 751 can be operated to contract, and the elastic part 753 can assist the contraction of the crank mechanism 751.
As shown in FIG. 8, in the second embodiment, when the seated person wants to stand up, the telescopic rod 742 is expanded so that the receiving portion 7431 of the transmission plate 743 receives the seat frame 721, and the rear of the seat frame 721 is The front frame body 722 and the rear frame body 723 are bent so that the seated person can stand up. When the seat frame 721 moves up, the connecting rod 716 and the base 71 are joined. The operation mechanism 74 is provided with higher operational stability, and the transmission mechanism 74 is provided with higher stability because it operates to receive the force at the center of gravity of the seat frame 721 from the front to the rear.
Then, since the footrest mechanism and the armrest frame of the above-mentioned embodiment in the present invention do not necessarily need to be installed, they should belong to the design range of the present invention even when the above parts are not installed. Therefore, as described above, the structure of the embodiment of the present invention certainly has the stability of operation and the smoothness of operation than the well-known products, and therefore, a patent claim is submitted based on the law.

The solid image figure in 1st Example of this invention. The image figure which inclines backrest and extends a footrest mechanism in 1st Example of this invention. The image figure which restores a backrest and a footrest mechanism in 1st Example of this invention. The image figure which raises a seat part in the 1st Example of this invention. The image figure which assembles | assembles an armrest frame in the 1st Example of this invention. The image figure which inclines backrest and extends a footrest mechanism in 2nd Example of this invention. The image figure which restores a backrest and a footrest mechanism in 2nd Example of this invention. The image figure which raises a seat part in the 2nd Example of this invention. The image figure which extends a footrest mechanism inclining a backrest in the structure of a product known conventionally. The image figure when raising a seat back part when restoring a backrest and a footrest mechanism in the structure of a product known conventionally. Image of extending the footrest mechanism by tilting the backrest in another conventionally known product structure An image of when the backrest and the footrest mechanism are restored and when the seat is raised in another conventionally known product structure

Explanation of symbols

1 pedestal, 11 pivot part, 12 support part, 13 articulation plate, 131 pivot hole, 14 articulation rod, 2 seat part, 21 seat frame, 22 joint part, 221 articulation part, 23 articulation part, 24 articulation plate, 241 pivot hole, 25 pivot section, 3 backrest, 31 backrest frame, 32 pivot section, 33 lateral rod, 331 pivot section, 34 articulated rod, 4 transmission mechanism, 41 motor, 42 telescopic rod, 43 transmission plate, 431 Receiving section, 432 pivot section, 433 pivot section, 434 pivot section, 5 footrest mechanism, 51 crank mechanism, 511 pivot section, 52 footrest frame, 53 articulating rod, 6 armrest frame, 71 pedestal, 711 pivot Joint part, 712 Support part, 713 Pivot part, 714 Pivot part, 715 Pivot part, 716 Articulating rod, 717 Armrest frame, 72 Seat part, 721 Seat frame, 722 Front frame body, 723 Rear frame body, 24 Joint Part, 725 726 Pivot, 727 Pivot, 728 Pivot, 73 Backrest, 731 Backrest Frame, 732 Pivot, 733 Horizontal Rod, 734 Pivot, 735 Pivot, 736 Linkage Rod, 737 Linkage Rod, 7371 Slot, 74 Transmission mechanism, 741 Motor, 742 Telescopic rod, 743 Transmission plate, 7431 Receiving part, 7432 Pivot part, 7433 Pivot part, 7434 Pivot part, 75 Foot rest mechanism, 751 Crank mechanism, 752 Foot rest frame , 753 Elastic parts

Claims (8)

It consists of a pedestal, a seat, a backrest, and a transmission mechanism,
A pivot part for pivoting with the motor of the transmission mechanism is provided in front of the base,
The seat has a seat frame, and a joint for pivoting the transmission plate of the transmission mechanism is provided at an appropriate position in the center of the seat frame.
The backrest has a backrest frame, and a pivot part is provided below the back frame to pivot with the rear of the seat frame, and a pivot part is provided below the back frame to pivot with the transmission plate of the transmission mechanism. Pivot the connecting rod,
There are a motor, a telescopic rod, and a power transmission plate in the transmission mechanism. The motor can be operated with the telescopic rod, and the telescopic rod should be directed to an appropriate position in the center of the seat. With a receiving part on the front, upper and lower parts on the front side and upper part on the rear side, respectively, and separately connected to the joint part of the seat part, the back frame, the connecting rod and the telescopic rod, and then the telescopic rod When contracting the backrest, the backrest can be tilted backwards, and when the telescopic rod is extended, it can be rotated with the transmission plate.When the backrest is contracted, the catching part of the transmission plate A chair that can automatically lie down or stand up so that it can be raised behind the seat frame.   The chair that can automatically lie down or stand up according to claim 1, wherein a support portion for holding the rear portion of the seat portion is provided behind the pedestal.   A connecting plate is provided in the front, a pivot hole is provided in the connecting plate to pivot one end of the two connecting rods, a connecting plate is provided behind the seat frame, and the other end of the connecting rod is pivoted on the connecting plate. The chair that can automatically lie down or stand up according to claim 1, wherein a pivot hole is provided. A pivot part for pivoting the footrest mechanism is provided in front of the seat frame in the seat part,
The footrest mechanism has a crank mechanism, a footrest frame, and a connecting rod.
Both ends of the crank mechanism are pivotally connected to a pivot part and a footrest frame in front of the seat frame, respectively, and a pivot part for pivotally connecting one end of the connecting rod is provided in the crank mechanism. The chair that can automatically lie down or stand up according to claim 1, wherein the other end is pivotally connected to a pivot portion located below the front side of the transmission plate.   The chair that can automatically lie down or stand up according to claim 1, wherein an armrest frame can be connected to the seat frame. A pivot part is provided in front of the pedestal to pivot with the front of the seat part.
There are front and rear frames on the seat frame of the seat, and when the front and rear frames are pivoted and combined, the receiving plate of the transmission plate holds the seat frame while extending the telescopic rod. The chair that can automatically lie down or stand up according to claim 1, wherein the chair can be operated so that the front is bent while raising the rear. A pivot part is provided on the front side of the pedestal to pivot one end of the connecting rod.
The other end of the connecting rod pivots with the rear frame of the seat,
A pivot for joining the footrest mechanism is provided on the front side of the base,
One end of the connecting rod is pivoted on the back frame,
The footrest mechanism has a crank mechanism and a footrest frame, and both ends of the crank mechanism are pivotally connected to the pivot portion of the pedestal and the footrest frame, respectively, and the crank mechanism is joined to the connecting rod of the backrest frame. A chair that can automatically lie down or stand up according to claim 1 or 6.   The chair that can automatically lie down or stand up according to claim 7, wherein one end of the elastic part is connected to the crank mechanism, and the other end of the elastic part is joined to the base.

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