ELECTRIC ROCKING CHAIR

Abstract

An electric rocking chair equipped with an electric device engendering automatically an in and out movement of the chair without there being a push by the user. The chair includes an armature deposited on the top of a support base containing a displacement device. The armature is fixed to the base in pivots allowing moving the chair front to back by means of a seesaw operation. The device includes an electric engine coupled with a worm gear at the output of which is fixed a gear the moving of a horizontal arm with an elbow which acts on the armature so as to produce the in and out movement of the chair. A control lever within reach of a user allows to command the engine and to engage the in and out movement or to stop it.

Description

PRIOR ART

The present invention refers to a previous application US 13/373,947 “Electric rocking chair” filed on Dec. 5, 2011 refering to a provisional U.S. 61/457,001 “Electric rocking chair” filed on Dec. 6, 2010 by the same authors.

The following applications drew our attention:

U.S. Ser. No. 12/546,818 Motorized rocking chair moved in a pendulum manner by Lung-Tan SHIH and published on Mar. 3, 2011. It shows a rocking chair comprising an armature, a swivelling seat standing above a frame, and a control system located between the frame and the seat and allowing to move the seat according to the frame in a rocking movement. The rocking movement is made according to a suspended pivot 131, 2 and is electrically controlled by a user.

In our case the rocking movement is led by a cam located under the chair and controlled by a motor and an electronic box with parameters.

CN 201213602 Rocking mechanism of electric rocking chair or electric rocking bed by Shengzhi HUANG and published on Apr. 1, 2009. It shows a rocking system for bed or rocking chair and activated by a spring.

OBJECTIVES AND ADVANTAGES

An objective of the present invention is to supply a device capable of inciting an in and out movement to a rocking chair for adult.

Another objective is to supply a support base fixed on pivot points to the armature of the chair, and which includes a displacement device of the chair comprising an angled horizontal arm acting on pivot points and so producing the displacement of the chair. The arm is electrically energized.

The present invention includes:

1. An armature of a single rocking chair or of a multiplace rocking chair with on its base four feet.

2. A support base for the armature is fixed under the armature on pivoting points and possesses four upright corners inwardly oriented. In the support base an electric device is installed and is intended to move in both directions the armature of the chair in the pivoting points.

3. To supply the in and out movement of the armature, a horizontal arm attached to a translational arm actionned by a gear pushes the armature of the chair from front to back. The translational arm is sliding along the gear, which gear is commanded by a wormgear commanded by an electric motor.

4. The arm possesses an elbow which allows to push and to pull the armature without interfering with the bottompart of the armature.

5. A transformer producing 208 volts of an electric motor coupled with the worm gear reducing the rotational speed of the electric motor from 1750 rpm to 43 rpm and turning the gear on which the translational arm is sliding. The preferred rotational speed of the gear is 9 to 10 rpm.

The present invention will be further understood from the following description with reference to the drawings.

BRIEF DESCRIPTION OF DRAWING FIGURES

FIG. 1 is a perspective of a rocking device.

FIG. 2 is a top view of the device of FIG. 1.

FIGS. 3A,3B are two side views of a chair positionned straight and oblique.

FIG. 4 is a perspective of a chair over its device.

FIG. 5 is a perspective of the rocking device of a four place rocking chair.

FIG. 6 is a perspective view of the rotative assembly of the rocking chair.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

In the following description and in the accompanying drawings, the numeral numbers refer to identical parts in the various Figures.

FIG. 1 shows an electric rocking chair on which a displacement device 30 is positioned over a support base 22 installed under the chair. The displacement device 30 comprises a rotative assembly 31 comprising a transformer 32 producing a 208V voltage which feeds an electric motor 34 coupled with a wormgear 36 connected 27 to a gear 24. Circumferencially attached to a gear is a translational arm 28 producing a translative movement. The arm 28 is ending by a pivot 40 which pushes horizontal elbowed 44 arm 42 terminating with a hand 43. The horizontal arm seizes a perpedicular link of the seat the feet thereof being adapted to join bottom pivots 50 and 51. One sees means of back seesaw 48 predicting a vertical position of the chair, and means of front seesaw 58 possessing a pivot point 51 mobile and predicting an oblique position of the chair. The means of back seesaw 48 include two pivots, the pivot point 50 on the bottom being mobile and a fixed pivot point 52 on the top and connected to a upright corner 54 of the base support. The base support comprises four upright corners inwardly directed to keep smaller the surface in contact with the armature for a better stability of the chair.

The displacement device 30 is kept near the level of the floor.

FIG. 2 is a top view of FIG. 1 showing the base support 22, the horizontal arm 42 ended with the hand 43 seizing a horizontal link 45 of the seat. One sees the electric motor 34 coupled with the wormgear 36 turning the gear 24 through a shaft 27. The upright corner 54, the means of back seesaw 48 and the means of front seesaw 58 are also shown.

FIG. 3A shows the back of the chair in a straight position 82. At the foot of the back, the hinge 84 allows to switch in the oblique position. One sees a reinforcement 86 and a button 88. The reinforcement 86 is intended to receive an impulse from the horizontal arm 42 and the button is intended to start up the motor causing the movement of the arm.

FIG. 3B shows an electric chair 62 with a back in a lengthened position 72, a seat 64 possessing an armrest 66 and including feet 70 put down on a reversed C-shaped support 74, the legs of the C being 76,78. One sees means of front 58 and back 48 seesaw in a position allowing the chair to rock behind. The upright corners 54 and 54′ appear from the base 22.

FIG. 4 shows an electric rocking chair 20 with a straight back 82, an armature 25 put on the base support 22, and back 21 and front 23 legs. The back leg 21 is connected to the means of back seesaw 48 and the front leg 23 is connected to the means of front seesaw 58. The back leg is linked to the bottom pivot 50 and the front leg is linked to the bottom pivot 51. The armature 25 of the chair, the horizontal link 45, the upright corners 54, 54′ and a hidden box 90 are also shown.

FIG. 5 shows a four place rocking chair 92 with a frame 94, an arm of rocking 96 leading an in and out movement on a tie 97 connected to a top frame. The top frame is made of tubes 98 in reversed U-shape into which fit wheels 99 to slide therein.

FIG. 6 shows the entire rotative assembly 31 comprising the electric motor 34 coupled with the wormgear 36 connected 27 to the gear 37 on which the translational arm 28 is radially mounted.

SUMMARY

An electric rocking chair comprising:

• • Means of support comprising at least two upright corners 54,54′ positioned behind and in front of the support. The means of support comprise a rectangular frame comprising four upright corners with two in front and two behind.
  • A pair of pendulums comprising means of back seesaw 48 and means of front seesaw 58 pivotedly mounted on the top pivot points 52,53 in the upright corners. Means of seasaw 48,58 also comprising bottom pivots 50,51.
  • The seat includes an armature 25 consisting of back and front legs 21,23 intended to be supported at those pivot points 50,51. The seat comprises a link of seat 45 on which a strength will be exercised to lead an in and out movement of the seat.
  • Means to apply a rotating energy and means to transform the rotative energy into a translative energy against the link of seat for making it move front behind. The action of the legs on the pendulums causes a rocking movement of the chair.
  • The armature of the chair is connected to legs which are bent in a convex way to move closer the bottom pivots 50,51 with regards to top pivots 52,53.
  • The means to apply an energy comprise a motor 34 coupled to a wormgear a 36 turning a gear 24 actionning a translational arm 28.
  • The means to transform the rotative energy to a translative energy are comprising the translational arm 28 radially mounted on the gear 24 and terminating by a pivot 40 pivotedly connected to a horizontal arm 42 acting on the link of seat 45.
  • The horizontal arm 42 includes an elbow 44 to protect neighbouring structures from any breaking or scratches during the rise and the descent of the pendulum. The horizontal arm includes a hand 43 intended to seize the link of seat 45.

It is to be clearly understood that the instant description with reference to the annexed drawing is made in an indicative manner and that the preferred embodiments described herein are meant in no way to limit further embodiments realizable within the scope of the invention. The matter which is claimed as being inventive and new is limited only by the following claims.

PARTS
20      Electric rocking chair
21      Back leg
22      Base support
23      Front leg
24      Gear
25      Armature
27      Shaft
28      Translational arm
30      Displacement device
31      Rotative assembly
32      Transformer
34      Electric motor
36      Worm gear
37      Gear
39      Support plate
40      Arm pivot
42      Horizontal arm
43      Hand
44      Elbow
45      Horizontal link of the seat
48      Means of back seesaw
50      Back bottom pivot point
51      Front bottom pivot point
52      Top pivot at the back
53      Top pivot at the front
54, 54′ Upright corners
58      Means of front seesaw
60      Means of pulley
62      Chair with a back straight
64      Seat
66      Armrest
68, 70  Legs of the seat
72      Lengthened back
74      C-shaped Support
76, 78  Legs of a C-shaped support
82      Straight back
86      Reinforcement
88      Button
90      Box
92      4-place rocking chair
94      Frame of a 4-place rocking chair
96      Arm of rocking
97      Tie
98      Tubes in a reversed-U shape
99      Wheels of the 4-place rocking

Claims

1. An electric rocking chair having a seat (64) comprising an armature (25) comprising a link of seat (45) overlead on a pair of pendulum (48,58), and in combination with a rotative assembly (31) with support means (22) therefor, said rotative assembly comprising a gear (24) and a tanslational arm (28) radially mounted thereto, said translational arm acting on said link of seat and displacing said pair of pendulum (48,58) thereby causing a rocking movement of said seat (64).

2. The electric rocking chair of claim 1 wherein said rotative assembly comprises an electric motor (34) having a rotationnal speed of 1750 rpm in combination with a wormgear (36) reducing said rotational speed to 43 rpm and turning said gear (24).

3. The electric rocking chair of claim 2 wherein said gear turns at 9 to 10 rpm.

4. The rocking chair of claim 1 wherein: said means of support (22) comprise at least two upright corners (54,54′) positioned respectivelly at the back and at the front of said support;said pair of pendulum (48,58) is pivotedly mounted (52,53) at top ends of said upright corners and comprising bottom pivots (50,51);said seat comprising front and back legs (21,23) intended to be fixed at said bottom pivots (50,51).

5. The rocking chair of claim 4 wherein said means of support comprise a rectangular frame comprising four upright corners with two at the front and two at the back.

6. The rocking chair of claim 5 wherein said pendulums, said legs and said pivots number four.

7. The rocking chair of claim 1 wherein said translational arm (28) is pivotedly (40) connected to a horizontal arm (42) acting on said link (45) of seat.

8. The rocking chair of claim 7 wherein said horizontal arm comprises an elbow (44) to protect neighbouring structures from scratches or breaking during the rise and the ascent of said pendulums.

9. The rocking chair of claim 8 wherein said horizontal arm comprises a hand (43) intended to seize said link (45) of seat.

10. The rocking chair of claim 4 wherein said armature (25) is linked to curved legs in a convex way to move closer bottom pivots (50,51) with regard to top pivots (52,53).

11. The rocking chair of claim 4 wherein said upright corners stand on a rubber base to protect scratches.