JP2019013277A - Electrically-driven reclining sofa - Google Patents

Abstract

To provide an electrically-driven reclining sofa which is improved by preventing the sofa from falling forward, when a user shifts the body weight forward in trying to rise or to stand up, with the sofa in a reclining state.SOLUTION: The reclining sofa includes: a base 15 which is installed on the floor surface; a frame link 20 which is attached to the base 15 and which supports a seat 12, a backrest 13, and a footrest 14; an electric motor 22 which is connected to the frame link 20 and which displaces the frame link 20 so that the seat 12, backrest 13 and footrest 14 become a sitting position or a reclining position; and a forward fall prevention member 28 which is connected to the base 15 to interlock with displacement of the frame link 20 from the sitting position to the reclining position, which extends in front of the base 15, with the front end in touch with the floor surface, and which is for preventing forward fall of the sofa, with the base front end as a fulcrum.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an electric reclining sofa.

Conventionally, various sofas with a footrest (Patent Document 1), reclining chairs (Patent Document 2), reclining chairs with ottomans (Patent Document 3), and the like have been proposed.
In recent years, an electric reclining sofa called an electric reclining sofa, in which a backrest portion is tilted by an electric motor and a footrest portion (ottoman) is lifted (Non-Patent Document 1), is commercially available.

JP-A-9-289934 JP-A-2006-101301 JP 2014-46160 A

Nitori official mail order Nitori net, home-sofa, seat chair, cushion-reclining sofa

As shown in FIG. 1, the commercially available electric reclining sofa 1 for a single person is reclined by a built-in motor so that the backrest portion 2 is electrically inclined and the footrest portion 3 is lifted forward. For this reason, the user can lie down with the upper body lying on the backrest part 2 and with the legs extended on the footrest part 3. (Figure 1)
However, when a user who is relaxing on the reclining sofa 1 tries to get up or stand up while the sofa 1 is reclining, the lower front edge 4 of the sofa 1 is moved as shown in FIG. As a fulcrum, there is a problem that the sofa 1 tilts forward as indicated by an arrow A1.

  Accordingly, an object of the present invention is to provide an electric reclining sofa that is improved so that the sofa does not fall forward even if the user tries to get up or move forward to move up when the sofa is in a reclining state. And

  In order to achieve the above object, the invention according to claim 1 includes a seat portion, a backrest portion, and a footrest portion, a seating position where the footrest portion hangs down from a front edge of the seat portion, and a backrest portion. Is an electric reclining sofa that can be changed to a reclining position in which the footrest part is tilted backward and the footrest part is lifted forward, and a base that is installed on the floor, the seat part, and the backrest part that are attached to the base And a skeletal link that supports the footrest portion, and an electric motor that is coupled to the skeleton link and that displaces the skeletal link so that the seat portion, the backrest portion, and the footrest portion are in the seating position or the reclining position. And linked to the base, and in conjunction with the displacement of the skeletal link from the seating position to the reclining position, the front end of the base link extends to the front. Surface in contact, and having a a preventing member falling forward to prevent falling forward sofa that said base front end as a fulcrum, an electric reclining sofa.

  The invention according to claim 2 is characterized in that the forward-falling prevention member is a longitudinal member that is disposed on each of the right side and the left side of the base and extends in the front-rear direction. 2. The electric reclining sofa according to claim 1, wherein the electric reclining sofa is slidable in the front-rear direction, the rear part is held by the base, and extends forward in synchronization with the displacement of the front-rear skeleton link to the reclining position. It is.

  According to the present invention, in synchronization with the change of the electric reclining sofa to the reclining position, the forward collapse prevention member extends forward and holds the front of the base. For this reason, even if the sofa is in the reclined position in the middle of changing from the sitting position to the reclining position, in the reclining position, or when a load is applied in front of the sofa, the sofa is Don't fall over.

  Therefore, the electric reclining sofa which can be used more safely and safely can be provided.

FIG. 1 is a diagram illustrating a state in which a user relaxes with a conventional electric reclining sofa in a reclining state. FIG. 2 is a diagram for explaining a problem when a user tries to get up with a conventional electric reclining sofa in a reclining state. FIG. 3 is a view of the electric reclining sofa 10 according to the embodiment of the present invention as viewed from the side, and is a view showing a state of the sitting position. FIG. 4 is a view of the electric reclining sofa 10 according to the embodiment of the present invention as viewed from the side, and is a view showing a state of the reclining position. FIG. 5 is a rear view showing the base 15 and the skeleton link 20. FIG. 6 is a plan view showing the base 15 and the skeleton link 20. FIG. 7 is a perspective view showing the base 15 and the skeletal link 20, and the skeletal link 20 is a diagram showing a sitting position state in which only the left skeletal link 20 </ b> L is shown and the right skeletal link is omitted. . FIG. 8 is a perspective view showing the base 15 and the skeletal link 20, and the skeletal link 20 is in a reclining position.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
3 and 4 are views of the electric reclining sofa 10 according to the embodiment of the present invention as viewed from the side, and an armrest side part 11, a seat part 12, a backrest part 13, and a footrest part 14 constituting the external appearance form. Are shown by a one-dot chain line, and a base 15 and a skeleton link 20 which are arranged inside and constitute a skeleton of the sofa are shown by a solid line. FIG. 3 shows a state where the electric reclining sofa 10 is in the seating position, and FIG. 4 shows a state where the electric reclining sofa 10 is in the reclining position.

3 and 4, the electric reclining sofa 10 includes a pair of left and right armrest side portions 11, a seat portion 12, a backrest portion 13, and a footrest portion 14 disposed between the pair of left and right armrest side portions 11. It has.
In the electric reclining sofa 10, in the sitting position (normal position), as shown in FIG. 3, the footrest portion 14 hangs down from the front edge of the seat portion 12, and the backrest portion 13 is inclined gently toward the rear. Yes. On the other hand, in the reclining position, the electric reclining sofa 10 is in a state where the backrest portion 13 is largely tilted rearward and the footrest portion 14 is lifted high so as to protrude forward as shown in FIG.

The change from the seating position to the reclining position of the electric reclining sofa 10 is performed by the driving force of the electric motor 22 as will be described later. The electric reclining sofa 10 includes a base 15 and a skeleton link 20 described below so that the posture can be changed between the sitting position and the reclining position.
3 and 4, reference numeral 15 denotes a base installed on the floor surface. A skeletal link 20 that can be displaced between a folded state (see FIG. 3) and an extended state (see FIG. 4) is disposed on the base 15. As will be described later, the skeleton link 20 has a pair of a left skeleton link 20L and a right skeleton link 20R. The backrest 13 and the footrest 14 are supported by the skeleton link 20 on the seat described above.

  FIG. 5 shows the base 15 and the skeletal link 20 (20L, 20R) (that is, a state in which the pair of armrest side parts 11, the seat part 12, the backrest part 13, and the footrest part 14 constituting the appearance of the sofa are omitted). FIG. 6 is a plan view showing the base 15 and the skeleton link 20 (20L, 20R). 5 and 6, the skeletal link 20 (20L, 20R) is shown in the sitting position.

  Further, FIG. 7 is a perspective view showing the base 15 and the skeleton link 20, and only the left skeleton link 20L is shown in the skeleton link 20, the right skeleton link is omitted, and the state of the sitting position is shown. ing. FIG. 8 is a perspective view showing the base 15 and the skeleton link 20 (20L, 20R), in which the skeleton link 20 (20L, 20R) is in a reclining position.

Referring to FIGS. 5 to 8, the base 15 may include a base frame 16 having a square shape in a plan view made by using four angle steels as an example. Under each corner of the base frame 16, leg seat adjusters 17 that contact the floor may be attached.
A left skeleton link 20 </ b> L is attached to the left side of the base frame 16, and a right skeleton link 20 </ b> R is attached to the right side of the base frame 16. The skeleton link 20L and the skeleton link 20R form a symmetrical pair. The skeleton link 20L and the skeleton link 20R are connected by a plurality of connecting members 21 extending left and right. For this reason, the skeletal link 20L and the skeletal link 20R are displaced in a folded state and an extended state in synchronization.

For example, an electric motor 22 is attached to the front side of the base frame 16. A driving force transmission mechanism 23 that transmits the driving force of the electric motor 22 extends from the front side to the rear side of the base frame 16. The driving force transmission mechanism 23 is provided at a substantially central portion in the left-right direction of the base frame 16 and has a longitudinal structure extending in the front-rear direction.
A gear box 24 is provided at the rear portion of the driving force transmission mechanism 23, that is, at the rear side of the base frame 16. The gear box 24 converts the driving force of the electric motor 22 input via the driving force transmission mechanism 23 into an appropriate torque and speed and outputs the converted torque. The output of the gear box 24 is given to the connecting member 21 via the link arm 25 and also to the left skeleton link 20L and the right skeleton link 20R via the left and right output shafts 26.

  The left side of the base frame 16 is provided with a guide member 27L that is long in the front-rear direction and a forward-falling prevention member 28L that is guided by the guide member 27L and that can slide back and forth in relation to the left skeleton link 20L. ing. The caster 29 is attached to the front end of the forward fall prevention member 28L. Therefore, when the forward fall prevention member 28L is guided by the guide member 27L and slides forward, the caster 29 supports the front end of the forward fall prevention member 28L while rolling on the floor surface. 28L smoothly moves forward and protrudes. The rear side of the forward tilt prevention member 28L is mechanically connected to the output shaft 26 of the gear box 24. Accordingly, the output of the gear box 24 is given to the skeleton link 20L via the output shaft 26, and the forward tilt prevention member 28L is slid forward in synchronization with the displacement operation in which the skeleton link 20L is displaced to the reclining position. The

  The right side of the base frame 16 is provided with a guide member 27R that is long in the front-rear direction and a forward tilt prevention member 28R that is guided by the guide member 27R and that can slide forward and backward in relation to the right skeleton link 20R. ing. A caster 29 is also attached to the front end of the forward fall prevention member 28R, and the rear thereof is mechanically connected to the output shaft 26 of the gear box 24. Therefore, the forward-falling prevention member 28R is also slid forward in synchronization with the displacement operation in which the skeleton link 20R is displaced to the reclining position.

  The electric reclining sofa 10 according to this embodiment has the above-described structure, in particular, the base 15, the base frame 16, the skeleton links 20, 20 </ b> L, and 20 </ b> R that are arranged inside the sofa and constitute the skeleton of the sofa, and prevent the body from falling forward. The members 28, 28L, 28R, the motor 22, the gear box 24, and the like are provided, and the forward collapse prevention members 28, 28L, 28R are moved forward in conjunction with the skeletal links 20, 20L, 20R being in the reclining position. Slide and move the lower front edge of the sofa 10 forward. The casters are always in contact with the floor at the front end. Therefore, even if the sofa 10 is used in a state of being displaced to the reclining position, or even if it is used in the reclining position, the user tries to get up from the sofa 10 or get up and move his weight forward. However, the sofa 10 will not fall forward.

  The present invention is not limited to the embodiments described above, and various modifications can be made within the scope of the claims.

DESCRIPTION OF SYMBOLS 1,10 Electric reclining sofa 2,13 Backrest part 3,14 Foot rest part 4 Lower front edge 11 Armrest side part 12 Seat part 15 Base 16 Base frame 17 Leg seat adjuster 20, 20L, 20R Skeletal link 21 Connecting member 22 Electric motor 23 driving force transmission mechanism 24 gear box 25 link arm 26 output shaft 27, 27L, 27R guide member 28, 28L, 28R forward fall prevention member 29 caster

Claims (2)

It has a seat, a backrest and a footrest,
A seating position where the footrest hangs down from the front edge of the seat, and
An electric reclining sofa that can change to a reclining position in which the backrest part is inclined backward and the footrest part is lifted forward,
A base installed on the floor,
A skeletal link attached to the base and supporting the seat, backrest and footrest;
An electric motor coupled to the skeletal link to displace the skeletal link so that the seat, backrest and footrest are in the sitting position or the reclining position;
Linked to the base, the frame link extends from the seating position to the reclining position, and extends to the front of the base, its front end is in contact with the floor surface, and the base front end is a fulcrum. An anti-tilt member for preventing the sofa from falling forward,
An electric reclining sofa, comprising: The forward fall prevention members are arranged on the right side and the left side of the base, respectively, and are longitudinal members extending in the front-rear direction. The rear part is held by the base,
The electric reclining sofa according to claim 1, wherein the electric reclining sofa extends forward in synchronization with the displacement of the front-rear skeleton link to the reclining position.