U.S. patent application number 15/305966 was filed with the patent office on 2017-02-16 for electromechanical extending device of movable sofa.
The applicant listed for this patent is Huang BRUCE. Invention is credited to Huang BRUCE, Wang DANIEL, Li JAMES, Zou JERRY, Wu LYNN.
Application Number | 20170042330 15/305966 |
Document ID | / |
Family ID | 51180603 |
Filed Date | 2017-02-16 |
United States Patent
Application |
20170042330 |
Kind Code |
A1 |
BRUCE; Huang ; et
al. |
February 16, 2017 |
ELECTROMECHANICAL EXTENDING DEVICE OF MOVABLE SOFA
Abstract
Disclosed is an electromechanical extending device of a movable
sofa, which is suitable for a movable sofa, especially for an
electric rocking chair or swinging chair. The electromechanical
extending device of a movable sofa comprises a mechanical extending
device and an electric device, wherein the electric device consists
of a motor, a motor front connection tube, a motor rear connection
tube, a motor head installation piece, a motor movement sliding
block, a sliding block installation piece, a rotating connection
piece, and a rotating bended piece, the motor front connection tube
is connected with a leg connection piece, the motor head
installation piece is connected with the motor front connection
tube, the motor head installation piece is connected with the motor
in a rotating manner, the motor movement sliding block is installed
on a guide rail of the motor, the sliding block installation piece
is fixed on the motor rear connection tube, the sliding block
installation piece is connected with the motor movement sliding
block in a rotating manner, the motor rear connection tube is
connected with the rotating bended piece, the rotating bended piece
is connected with a rising connection piece in a rotating manner,
the rotating connection piece is connected with the rotating bended
piece in a rotating manner, and the rotating connection piece is
connected with an installation board in a rotating manner. The
device has a simple structure, a safe and reliable drive, a high
efficiency, a low cost and a good level of comfort.
Inventors: |
BRUCE; Huang; (Suzhou,
Jiangsu, CN) ; JAMES; Li; (Suzhou, Jiangsu, CN)
; DANIEL; Wang; (Suzhou, Jiangsu, CN) ; JERRY;
Zou; (Suzhou, Jiangsu, CN) ; LYNN; Wu;
(Suzhou, Jiangsu, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
BRUCE; Huang |
Suzhou, Jiangsu |
|
CN |
|
|
Family ID: |
51180603 |
Appl. No.: |
15/305966 |
Filed: |
March 11, 2015 |
PCT Filed: |
March 11, 2015 |
PCT NO: |
PCT/CN2015/074023 |
371 Date: |
October 21, 2016 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A47C 17/04 20130101;
A47C 1/0355 20130101; A47C 3/02 20130101 |
International
Class: |
A47C 1/0355 20060101
A47C001/0355; A47C 17/04 20060101 A47C017/04; A47C 3/02 20060101
A47C003/02 |
Foreign Application Data
Date |
Code |
Application Number |
May 14, 2014 |
CN |
201410202457.0 |
Claims
1. An electromechanical extending device of a movable sofa,
comprising a mechanical extending device and an electric device,
wherein the mechanical extending device has the same left side part
and right side part which are connected via a fixing part in a
fixing manner, wherein the electric device consists of a motor, a
motor front connection tube, a motor rear connection tube, a motor
head installation piece, a motor movement sliding block, a sliding
block installation piece, a rotating connection piece, and a
rotating bended piece, the motor is a guide rail motor, the motor
front connection tube is fixed on a leg connection piece of the
mechanical extending device, the motor head installation piece is
fixed on the motor front connection tube, the motor head
installation piece is connected with the motor via a fourth axis of
rotation in a rotating manner, the motor movement sliding block is
installed on the guide rail of the motor, the sliding block
installation piece is fixed on the motor rear connection tube, the
sliding block installation piece is connected with the motor
movement sliding block via a fifth axis of rotation in a rotating
manner, the motor rear connection tube is fixed on the rotating
bended piece, the rotating bended piece is connected with a rising
connection piece of the mechanical extending device via a third
axis of rotation in a rotating manner, the rotating connection
piece is connected with the rotating bended piece via a second axis
of rotation in a rotating manner, and the rotating connection piece
is connected with an installation board on the mechanical extending
device in a rotating manner.
2. The electromechanical extending device of the movable sofa
according to claim 1, wherein both the left side part and the right
side part are provided with a leg connection piece, a rising
connection piece, an installation board, a foot pedal, a first foot
rod, a second foot rod, a small foot pedal, a rolling groove
connection piece, a backrest piece, a rolling wheel, a third foot
rod, a front connection piece, a wheel controlling connection
piece, a wheel connection piece, a rear pin connection piece, a leg
connection piece, a rising connection piece, a seat board, and a
leg driving connection piece, the foot pedal, the small foot pedal,
and the leg connection piece are connected with the first foot rod
and the second foot rod in a rotating manner respectively, the
third foot rod is connected with the second foot rod, the leg
driving connection piece, and the seat board in a rotating manner,
the seat board is connected with the rising connection piece and
the backrest piece in a rotating manner, the backrest piece is
connected with the rising connection piece, the rear pin connection
piece, and the rolling groove connection piece in a rotating
manner, the rising connection piece is connected with the front
connection piece in a rotating manner, the rear pin connection
piece is connected with the installation board and the wheel
connection piece in a rotating manner, the wheel controlling
connection piece is connected with the wheel connection piece and
the installation board in a rotating manner, the leg driving
connection piece is connected with the rear pin connection piece
via the rolling wheel in a rotating manner, the rolling wheel moves
in the groove of the rolling groove connection piece, the
installation board is fixed on a base of the movable sofa, the
second foot rod is provided with a first limiter, and the seat
board is provided with a second limiter and a third limiter.
3. The electromechanical extending device of the movable sofa
according to claim 1, wherein the motor head installation piece
inclines downward of the motor, the fourth axis of rotation on the
motor head installation piece is lower than the motor front
connection tube, the guide rail of the motor is installed on the
motor rear connection tube, and the motor movement sliding block is
positioned above the motor rear connection tube.
4. The electromechanical extending device of the movable sofa
according to claim 1, wherein both the fourth axis of rotation and
the fifth axis of rotation are bolts.
Description
TECHNICAL FIELD OF THE INVENTION
[0001] The invention relates to an electromechanical extending
device of a movable sofa, and in particular relates to a
multi-functional electromechanical extending device of a movable
sofa in which the leg shelf can be folded or unfolded and the angle
of the backrest can be slightly adjusted. The electromechanical
extending device of the movable sofa is mainly suitable for a
movable sofa, especially for an electric rocking chair or swinging
chair.
BACKGROUND OF THE INVENTION
[0002] The current electromechanical extending device of a movable
sofa has six major disadvantages: 1, in the electrically driving
manner of the movable sofa, the structure is too complicated,
influencing the kinetic energy efficiency of the motor; 2, in the
electrically driving manner of the movable sofa, the installation
position of the motor installation head is too high so that there
is a risk of the hip touching the motor installation head when
people are seated in the sofa, and there is a serious safety
problem; 3, in the electrically driving manner of the movable sofa,
the installation is complicated, influencing the installation
efficiency of the movable sofa; 4, in the electrically driving
manner of the movable sofa, the motor installation tube piece is
too complicated so that there is a problem that the sofa cannot be
installed in the production process; 5, in the electrically driving
manner of the movable sofa, there is a problem of shaking and
inconsistent left and right sides in the running process; and 6,
the mechanical device of the electric rocking chair or swinging
chair of the movable sofa has an inconsistent structure, increasing
the manufacturing cost of the movable sofa.
SUMMARY OF THE INVENTION
Technical Problem
[0003] The technical problem to be solved by the invention is to
overcome the above disadvantages existing in the prior art, and
provide an electromechanical extending device of a movable sofa
which has a simple structure, a safe and reliable drive, a high
efficiency, and a low cost.
Solution to the Problem
Technical Solution
[0004] The technical solution adopted by the invention to solve the
above technical problem is an electromechanical extending device of
a movable sofa, comprising a mechanical extending device and an
electric device, the mechanical extending device has the same left
side part and right side part which are connected via a fixing part
in a fixing manner, wherein the electric device consists of a
motor, a motor front connection tube, a motor rear connection tube,
a motor head installation piece, a motor movement sliding block, a
sliding block installation piece, a rotating connection piece, and
a rotating bended piece, the motor is a guide rail motor, the motor
front connection tube is fixed on a leg connection piece of the
mechanical extending device, the motor head installation piece is
fixed on the motor front connection tube, the motor head
installation piece is connected with the motor via a fourth axis of
rotation in a rotating manner, the motor movement sliding block is
installed on the guide rail of the motor, the sliding block
installation piece is fixed on the motor rear connection tube, the
sliding block installation piece is connected with the motor
movement sliding block via a fifth axis of rotation in a rotating
manner, the motor rear connection tube is fixed on the rotating
bended piece, the rotating bended piece is connected with a rising
connection piece of the mechanical extending device via a third
axis of rotation in a rotating manner, the rotating connection
piece is connected with the rotating bended piece via a second axis
of rotation in a rotating manner, and the rotating connection piece
is connected with an installation board on the mechanical extending
device in a rotating manner. The motor head of the
electromechanical extending device of the movable sofa drives the
leg connection piece of the mechanical extending device via the
motor front connection tube, the motor movement sliding block
drives the rotating bended piece via the motor rear connection
tube, and the rotating bended piece drives the rising connection
piece of the mechanical extending device so that the driving force
of the motor is utilized to the maximum extent, which saves energy,
reduces mechanical wear, and enhances the integral structure.
[0005] Both the left side part and the right side part in
accordance with the invention are provided with a leg connection
piece, a rising connection piece, an installation board, a foot
pedal, a first foot rod, a second foot rod, a small foot pedal, a
rolling groove connection piece, a backrest piece, a rolling wheel,
a third foot rod, a front connection piece, a wheel controlling
connection piece, a wheel connection piece, a rear pin connection
piece, a leg connection piece, a rising connection piece, a seat
board, and a leg driving connection piece, the foot pedal, the
small foot pedal, and the leg connection piece are connected with
the first foot rod and the second foot rod in a rotating manner
respectively, the third foot rod is connected with the second foot
rod, the leg driving connection piece, and the seat board in a
rotating manner, the seat board is connected with the rising
connection piece and the backrest piece in a rotating manner, the
backrest piece is connected with the rising connection piece, the
rear pin connection piece, and the rolling groove connection piece
in a rotating manner, the rising connection piece is connected with
the front connection piece in a rotating manner, the rear pin
connection piece is connected with the installation board and the
wheel connection piece in a rotating manner, the wheel controlling
connection piece is connected with the wheel connection piece and
the installation board in a rotating manner, the leg driving
connection piece is connected with the rear pin connection piece
via the rolling wheel in a rotating manner, the rolling wheel moves
in the groove of the rolling groove connection piece, the
installation board is fixed on a base of the movable sofa, the
second foot rod is provided with a first limiter, and the seat
board is provided with a second limiter and a third limiter. The
first limiter is in contact with the leg connection piece so as to
have the effect of limiting the position, and the second limiter
and the third limiter are in contact with the rising connection
piece so as to have the effect of limiting the position.
[0006] The motor head installation piece in accordance with the
invention inclines downward of the motor, and the fourth axis of
rotation on the motor head installation piece is lower than the
motor front connection tube so that the installation position of
the motor head is relatively low; the guide rail of the motor is
installed on the motor rear connection tube, and the motor movement
sliding block is positioned above the motor rear connection tube so
that the height difference between the motor movement sliding block
and the motor head is relatively small. When the motor movement
sliding block moves along the guide rail on the motor, the driving
force of the motor is consistent with the unfolding direction of
the movable sofa to the maximum extent, which further saves energy,
reduces mechanical wear, enhances the integral structure, and helps
improve the kinetic energy efficiency of the motor.
[0007] Advantageous Effects of the Invention
Advantageous effects
[0008] The electromechanical extending device in accordance with
the invention has a simple structure, helping improve the
installation efficiency of the mechanical extending device.
[0009] The invention solves the phenomenon of shaking and
inconsistent left and right sides in the running process in the
electrically driving manner of the movable sofa in the prior art,
and improves the level of comfort of the movable sofa.
[0010] The invention solves the problem that in the electrically
driving manner of the movable sofa, the position of the motor
installation head is too high so that there is a risk of the hip
touching the motor installation head when people are seated in the
sofa, and improves the safety of the movable sofa.
[0011] Both the fourth axis of rotation and the fifth axis of
rotation in accordance with the invention are bolts, realizing the
fact that the motor movement sliding block on the motor is
connected with the motor head via the bolt, and improving the
installation efficiency of the motor.
[0012] The invention unifies the structure of the mechanical
extending device of the electric rocking chair or swinging chair,
and reduces the controlling cost of the movable sofa.
[0013] The invention improves the electric function of the movable
sofa, has a safe and reliable drive, a high efficiency, and a low
cost, and improves the degree of automation and the level of
comfort of the movable sofa.
BRIEF DESCRIPTION OF THE DRAWINGS
[0014] FIG. 1 shows an application schematic diagram when the main
structure and mode of operation are applied to the rocking chair in
accordance with the embodiment of the invention;
[0015] FIG. 2 shows a front schematic diagram when the leg of the
left part or the right part is completely folded in accordance with
the embodiment of the invention as shown in FIG. 1;
[0016] FIG. 3 shows a front schematic diagram when the leg of the
left part or the right part is completely unfolded in accordance
with the embodiment of the invention as shown in FIG. 1;
[0017] FIG. 4 shows a schematic diagram when the leg of the left
part or the right part is completely unfolded and the backrest is
completely reversed in accordance with the embodiment of the
invention as shown in FIG. 1;
[0018] FIG. 5 shows an application schematic diagram when the main
structure and mode of operation are applied to the swinging chair
in accordance with the embodiment of the invention;
[0019] FIG. 6 shows a schematic diagram of the rocking chair base
in accordance with the embodiment of the invention; and
[0020] FIG. 7 shows a schematic diagram of the swinging chair base
in accordance with the embodiment of the invention.
[0021] In the figures: 1--a motor front connection tube; 2--a motor
head installation piece; 3--a motor; 4--a leg connection piece;
5--a motor movement sliding block; 6--a first axis of rotation;
7--a rotating connection piece; 8--a second axis of rotation; 9--a
third axis of rotation; 10--a rising connection piece; 11--a fourth
axis of rotation; 12--a motor rear connection tube; 13--a sliding
block installation piece; 14--a fifth axis of rotation; 15--a
rotating bended piece; 16--an installation board; 17--a foot pedal;
18--a first foot rod; 19--a second foot rod; 20--a small foot
pedal; 21--a first limiter; 22--a second limiter; 23--a third
limiter; 24--a rolling groove connection piece; 25--a backrest
piece; 26--a rolling wheel; 27--a third foot rod; 28--a front
connection piece; 29--a seat board; 30--a leg driving connection
piece; 31--a rocking chair base; 32--a wheel controlling connection
piece; 33--a wheel connection piece; 34--a rear pin connection
piece; 35--a guide rail; 36--a swinging chair base; and 37--a
groove of a rolling groove connection piece.
DETAILED DESCRIPTION OF THE INVENTION
[0022] The invention will be further described in combination with
the attached drawings and by means of embodiment.
[0023] The electromechanical extending device of the movable sofa
in accordance with the embodiment of the invention consists of a
mechanical extending device and an electric device. The mechanical
extending device is the prior art. The mechanical extending device
has the same left side part and right side part which are connected
via a fixing part in a fixing manner. As a special example, both
the left side part and the right side part of the mechanical
extending device are provided with a leg connection piece 4, a
rising connection piece 10, an installation board 16, a foot pedal
17, a first foot rod 18, a second foot rod 19, a small foot pedal
20, a rolling groove connection piece 24, a backrest piece 25, a
rolling wheel 26, a third foot rod 27, a front connection piece 28,
a seat board 29, a leg driving connection piece 30, a wheel
controlling connection piece 32, a wheel connection piece 33, and a
rear pin connection piece 34, the foot pedal 17, the small foot
pedal 20, and the leg connection piece 4 are connected with the
first foot rod 18 and the second foot rod 19 in a rotating manner
respectively, the third foot rod 27 is connected with the second
foot rod 19, the leg driving connection piece 30, and the seat
board 29 in a rotating manner, the seat board 29 is connected with
the rising connection piece 10 and the backrest piece 25 in a
rotating manner, the backrest piece 25 is connected with the rising
connection piece 10, the rear pin connection piece 34, and the
rolling groove connection piece 24 in a rotating manner, the rising
connection piece 10 is connected with the front connection piece 28
in a rotating manner, the rear pin connection piece 34 is connected
with the installation board 16 and the wheel connection piece 33 in
a rotating manner, the wheel controlling connection piece 32 is
connected with the wheel connection piece 33 and the installation
board 16 in a rotating manner, the leg driving connection piece 30
is connected with the rear pin connection piece 34 via the shaft of
the rolling wheel 26 in a rotating manner, the rolling wheel 26
moves in the groove 37 of the rolling groove connection piece 24,
the installation board 16 is fixed on the base of the movable sofa
(the rocking chair base 31 in the embodiment), the second foot rod
19 is provided with a first limiter 21, and the seat board 29 is
provided with a second limiter 22 and a third limiter 23. The first
limiter 21 is in contact with the leg connection piece 4 so as to
have the effect of limiting the position, and the second limiter 22
and the third limiter 23 are in contact with the rising connection
piece 10 so as to have the effect of limiting the position. The
mechanical extending device can be slightly deformed, but the
driving principle and the core part thereof are the same or
similar, and in particular, the leg connection piece 4, the rising
connection piece 10 and the installation board 16 thereof with
which the electric device is connected are the same or similar.
[0024] The design point in accordance with the embodiment of the
invention lies in the electric device. The electric device consists
of a motor 3, a motor front connection tube 1, a motor head
installation piece 2, a motor movement sliding block 5, a motor
rear connection tube 12, a sliding block installation piece 13, a
rotating connection piece 7, and a rotating bended piece 15, the
motor 3 uses a guide rail motor, the motor 3 head is connected with
the motor head installation piece 2 fixed on the motor front
connection tube 1 via the fourth axis of rotation 11 in a rotating
manner, the motor front connection tube 1 is fixed on the leg
connection piece 4 of the mechanical extending device, the motor
movement sliding block 5 moves on the guide rail 35 of the motor 3,
the motor movement sliding block 5 is connected with the sliding
block installation piece 13 fixed on the motor rear connection tube
12 via the fifth axis of rotation 14 in a rotating manner, the
motor rear connection tube 12 is fixed on the rotating bended piece
15, the rotating bended piece 15 is connected with the rising
connection piece 10 of the mechanical extending device via the
third axis of rotation 9 in a rotating manner, the rotating
connection piece 7 is connected with the rotating bended piece 15
via the second axis of rotation 8 in a rotating manner, and
meanwhile, the rotating connection piece 7 is connected with an
installation board 16 on the mechanical extending device via the
first axis of rotation 6 in a rotating manner. In accordance with
the invention, the motor 3 head of the electromechanical extending
device of the movable sofa drives the leg connection piece 4 of the
mechanical extending device via the motor front connection tube 1,
the motor movement sliding block 5 drives the rotating bended piece
15 via the motor rear connection tube 12, and the rotating bended
piece 15 drives the rising connection piece 10 of the mechanical
extending device so that the driving force of the motor 3 is
utilized to the maximum extent, which saves energy, reduces
mechanical wear, and enhances the integral structure.
[0025] The motor head installation piece 2 in accordance with the
embodiment inclines downward of the motor 3, and the fourth axis of
rotation 11 on the motor head installation piece 2 is lower than
the motor front connection tube 1 so that the installation position
of the motor 3 head is relatively low; the guide rail 35 of the
motor 3 is installed on the motor rear connection tube 12, and the
motor movement sliding block 5 is positioned above the motor rear
connection tube 12 so that the height difference between the motor
movement sliding block 5 and the motor 3 head is relatively small.
When the motor movement sliding block 5 moves along the guide rail
35 on the motor 3, the driving force of the motor 3 is consistent
with the unfolding direction of the embodiment to the maximum
extent, which further saves energy, reduces mechanical wear, and
enhances the integral structure.
[0026] FIG. 2 and FIG. 3 show the process during which the leg of
the electromechanical extending device of the movable sofa is
completely folded until it is completely unfolded. The user can
control the motor button so as to drive the motor 3 to move. The
motor movement sliding block 5 on the motor 3 moves on the guide
rail 35 so as to drive the motor rear connection tube 12 connected
with the motor movement sliding block 5 via the fifth axis of
rotation 14 in a rotating manner, the motor 3 head is connected
with the motor head installation piece 2 fixed on the motor front
connection tube 1 via the fourth axis of rotation 11 in a rotating
manner, the motor front connection tube 1 is fixed on the leg
connection piece 4 of the mechanical extending device, the motor
rear connection tube 12 is fixed on the rotating bended piece 15,
and the rotating bended piece 15 is connected with a rising
connection piece 10 of the mechanical extending device via the
third axis of rotation 9 in a rotating manner. Due to the gravity
of people themselves, the second limiter 22 and the third limiter
23 on the seat board 29 are in contact with the rising connection
piece 10 respectively during the moving process of the motor
movement sliding block 5 so as to reach the effect of limiting the
position, and therefore, the seat board 29, the rising connection
piece 10, the backrest piece 25, the rotating bended piece 15, the
motor rear connection tube 12, the sliding block installation piece
13, and the motor movement sliding block 5 behave as a whole so
that the movement of the motor 3 drives the leg connection piece 4
fixed on the motor front connection tube 1 to rotate, and the
rotation of the leg connection piece 4 drives the first foot rod 18
and the second foot rod 19 to rotate, and then drives the third
foot rod 27 to rotate with respect to the seat board 29. When the
limiting pin 21 fixed on the second foot rod 19 is contact with the
leg connection piece 4, the leg extends in position so as to
realize the process during which the foot pedal 17 is folded until
it is completely unfolded.
[0027] FIG. 3 and FIG. 4 show the process during which the leg of
the electromechanical extending device of the movable sofa is
completely unfolded until the backrest is completely reversed. When
the leg is completely unfolded, the limiting pin 21 fixed on the
second foot rod 19 is contact with the leg connection piece 4 so
that the foot pedal 17, the first foot rod 18, the second foot rod
19, the small foot pedal 20, the first limiter 21, the second
limiter 22, the third limiter 23, the leg connection piece 4, and
the seat board 29 behave as a whole. When the motor 3 continues to
run, the motor movement sliding block 5 drives the sliding block
installation piece 13 to move, the sliding block installation piece
13 drives the motor rear connection tube 12 to move, and the motor
rear connection tube 12 drives the rotating bended piece 15 to
move. Since the rotating bended piece 15 is connected with the
rising connection piece 10 on the mechanical extending device via
the third axis of rotation 9 in a rotating manner, the rotating
connection piece 7 is connected with the rotating bended piece 15
via the second axis of rotation 8 in a rotating manner, and
meanwhile, the rotating connection piece 7 is connected with the
installation board 16 on the mechanical extending device via the
first axis of rotation 6 in a rotating manner while the
installation board 16 is fixed on the rocking chair base 31
immovably so as to drive the rising movement of the rising
connection piece 10. The rising movement of the rising connection
piece 10 drives the backrest piece 25 to rotate, the rotation of
the backrest piece 25 drives the rolling groove connection piece 24
to move, the leg driving connection piece 30, the rolling wheel 26,
and the rear pin connection piece 34 are connected in a rotating
manner, and the rolling wheel 26 moves in the groove 37 of the
rolling groove connection piece 24. When the motor movement sliding
block 5 on the motor 3 moves to the final limiting point (the
maximum stretch extent) of the motor 3, the motor movement sliding
block 5 stops moving backward so as to realize the process during
which the backrest piece 25 is completely reversed.
INDUSTRIAL APPLICABILITY
[0028] The movement principle of the embodiment lies in the fact
that the motor movement sliding block 5 on the motor 3 moves on the
guide rail 35 so as to drive the motor rear connection tube 12
connected with the motor movement sliding block 5 via the fifth
axis of rotation 14 in a rotating manner, the motor 3 head is
connected with the motor head installation piece 2 fixed on the
motor front connection tube 1 via the fourth axis of rotation 11 in
a rotating manner, the motor front connection tube 1 is fixed on a
leg connection piece 4 of the mechanical extending device, the
motor rear connection tube 12 is fixed on the rotating bended piece
15, and the rotating bended piece 15 is connected with the rising
connection piece 10 of the mechanical extending device via the
third axis of rotation 9 in a rotating manner. Due to the gravity
of people themselves, during the moving process of the motor
movement sliding block 5, the leg structure of the
electromechanical extending device of the movable sofa is unfolded
first, and the leg structure is prevented from being mechanically
unfolded when the leg structure is completely unfolded in the
limited position to be in contact with the contact surface so as to
drive the backrest structure of the electromechanical extending
device of the movable sofa to be completely reversed. In this way,
the electromechanical extending device of the movable sofa realizes
the process of change of state from FIG. 2 to FIG. 3 and then to
FIG. 4. On the contrary, when the motor movement sliding block 5
moves reversely (the motor movement sliding block 5 moves forward,
and moves leftward from FIG. 2 to FIG. 4), the electromechanical
extending device of the movable sofa can realize the process of
change of state from FIG. 4 to FIG. 3 and then to FIG. 2. When the
electromechanical extending device of the movable sofa changes the
state from FIG. 2 to FIG. 3 and then to FIG. 4, and then changes
the state from FIG. 4 to FIG. 3 and then to FIG. 2, a complete
electrically driving extending and folding process of the
electromechanical extending device of the movable sofa is
realized.
[0029] In the embodiment, the rotating connecting manner of the
fourth axis of rotation 11 and the fifth axis of rotation 14 is a
bolt-type connection, and the bolt-type connection of the motor 3
is realized.
[0030] The embodiment realizes the fact that the overall dimension
of the motor 3 is smaller and the installation position of the
motor 3 head is lower, and height H (as shown in FIG. 2) is 15 mm
lower than the height of the electric rocking chair or swinging
chair of the movable sofa in the prior art so as to solve the
problem that there is a risk of the hip touching the installation
head of the motor 3 when people are seated in the sofa.
[0031] In accordance with the embodiment, the motor rear connection
tube 12 is fixed on the rotating bended piece 15, and the rotating
bended piece 15 is connected with the rising connection piece 10 of
the mechanical extending device via the third axis of rotation 9 in
a rotating manner so that the direction of the movement driving
force of the motor 3 is consistent with the running direction of
the rotating bended piece 15 to the maximum extent so as to solve
the problem of shaking and unbalanced left and right sides in the
motor 3 driving manner.
[0032] The embodiment installs the mechanical extending device and
the electric device on the rocking chair base 31 (as shown in FIG.
6) and the swinging chair base 36 (as shown in FIG. 7),
respectively, so as to unify the electric structure of the electric
rocking chair and the electric swinging chair, thus saving the
controlling cost of the electric rocking chair or swinging chair of
the movable sofa. The mechanical extending device can be slightly
deformed, but the driving principle and the core part thereof are
the same or similar, and in particular, the leg connection piece 4,
the rising connection piece 10 and the installation board 16
thereof with which the electric device is connected are the same or
similar.
[0033] The embodiment improves the electrically driving manner of
the movable sofa, helps improving the electric installation and
running efficiency of the movable sofa, and improves the degree of
automation and the level of comfort of the movable sofa.
[0034] All the simple variants or equivalent changes of the
invention should be considered to fall within the scope of
protection of the invention.
* * * * *