ELECTRIC MECHANICAL STRETCHING DEVICE OF MOVABLE SOFA

Abstract

Disclosed is an electrical mechanical stretching device of a movable sofa, comprising a mechanical stretching device and an electrical device, wherein the mechanical stretching device comprises a third leg rod and a third connecting rod. The electrical device consists of a motor sliding block connecting pipe, a motor, a motor leg fixing pipe, a motor guide rail and a motor sliding block. The motor is provided with the motor guide rail. The motor sliding block is mounted on the motor guide rail. A motor head is rotatably connected via a second rotating shaft to the motor leg fixing pipe which is fixed on the third leg rod. The motor sliding block is rotatably connected via a first rotating shaft to the motor sliding block connecting pipe which is fixed on the third connecting rod. A base of the mechanical stretching device is connected by two bottom connecting pipes.

Claims

1-3. (canceled)

4. An electrical mechanical stretching device of movable sofa, comprising: a mechanical stretching device; a driving device; wherein the driving device includes a leg fixing tube, a sliding block connecting tube, a sliding block, and a driving part; both ends of the leg fixing tube and the sliding block connecting tube are fixedly mounted on the mechanical stretching device respectively; the sliding block is mounted on the driving part; the driving part is rotatably connected to the leg fixing tube; and the sliding block is rotatably connected to the sliding block connecting tube.

5. The electrical mechanical stretching device of movable sofa of claim 4, wherein the mechanical stretching device includes two third leg rods and two third connecting rods; both ends of the leg fixing tube are fixedly connected to the two third leg rods respectively; and both ends of the sliding block connecting tube is fixedly connected to the two third connecting rods respectively.

6. The electrical mechanical stretching device of movable sofa of claim 4, wherein the driving part is a motor.

7. The electrical mechanical stretching device of movable sofa of claim 6, wherein the motor further includes a motor guide rail; a motor head, fixedly connected to the motor guide rail; wherein the sliding block is mounted on the motor guide rail; the driving device further includes a second rotating shaft; and the motor head is rotatably connected to the leg fixing tube via the second rotating shaft.

8. The electrical mechanical stretching device of movable sofa of claim 7, wherein the second rotating shaft is a pin.

9. The electrical mechanical stretching device of movable sofa of claim 7, wherein the driving device further includes a first rotating shaft, wherein the sliding block is rotatably connected to the leg fixing tube via the first rotating shaft.

10. The electrical mechanical stretching device of movable sofa of claim 9, wherein the first rotating shaft is a pin.

11. The electrical mechanical stretching device of movable sofa of claim 4, wherein the electrical mechanical stretching device of movable sofa further includes two bases and two bottom connecting tubes, wherein both ends of each bottom connecting tube is respectively connected to the two bases.

12. The electrical mechanical stretching device of movable sofa of claim 4, wherein the leg fixing tube is parallel with the sliding block connecting tube.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

Description of Drawings

[0011] FIG. 1 is a front schematic diagram of the embodiment of the present invention when the left part or the right part of the kg is completely folded.

[0012] FIG. 2 is a front schematic diagram of the embodiment of the present invention when the left part. or the right part of the leg is completely unfolded.

[0013] FIG. 3 is a schematic diagram of the present invention when the backrest is completely put down.

[0014] FIG. 4 is a schematic diagram of the composition and operation manner of the main parts of the embodiment of the present invention. In the FIG. 1—third connecting rod; 2—motor sliding block connecting pipe; 3—first rotating shaft; 4—third leg rod; 5—motor; 6—motor leg fixing pipe; 7—second rotating shaft; 8—motor guide rail; 22—motor sliding block; 23—bottom connecting pipe; 24—base.

[0015] FIG. 5 is a schematic diagram of the composition and operation manner of the main parts of the prior art. In the Figure: 9—comparing electrical connecting rod; 10—electrical rectangular pipe; 11—electrical angle iron; 12—transmission part; 13—transmission fixing support; 14—comparing motor head fixing part; 15—comparing electrical connecting rod; 16 motor fixing part; 17—motor tail fixing part; 18—comparing motor movable sliding block; 19—comparing motor; 20—rotating shaft transmission part; 21—rotatable connecting rod.

DETAILED DESCRIPTION

[0016] Hereinafter, the present invention is further described with reference to the drawings and the embodiments.

[0017] The electrical mechanical stretching device of movable sofa of an embodiment includes a mechanical stretching device in the prior art (which has a left part and a second part that are the same, wherein the left. part is fixedly connected to the right part via a fixing part). The mechanical stretching device has third connecting rod 1, third leg rod 4, and base 24. Structural features of this device are that electrical device includes motor sliding block connecting pipe 2, motor 5, motor leg fixing pipe 6, motor guide rail 8, and motor sliding block 22. Motor 5 uses a guide rail motor. The head of motor 5 is rotatably connected via second rotating shaft 7 to motor leg fixing pipe 6. Motor leg fixing pipe 6 is fixed on third leg rod 4 of the mechanical stretching device. Motor sliding block 22 is rotatably connected via first rotating shaft 3 to motor sliding block connecting pipe 2. Motor sliding block connecting pipe 2 is fixed on third connecting rod 1 of the mechanical stretching device. Motor sliding block 22 moves on motor guide rail 8 of motor 5.

[0018] Motor leg fixing pipe 6 of the embodiment is fixed on third leg rod 4 of the mechanical stretching device, such that the pushing force of motor 5 directly acts on the leg structure of the mechanical stretching device. Motor sliding block 22 moves along motor guide rail 8, such that the direction of the driving force of motor 5 is consistent with the direction of unfolding of the embodiment as much as possible. Thus, the energy is saved, the mechanical loss is reduced, and the entire structure is enhanced.

INDUSTRIAL UTILITY

[0019] The moving principle of the embodiment is that motor sliding block 22 on motor 5 moves on motor guide rail 8, so as to drive motor leg fixing pipe 6 which is fixed on third leg rod 4 via second rotating shaft 7. Motor leg fixing pipe 6 is fixed on third leg rod 4 of the mechanical stretching device. Bearing the weight of a person, motor sliding block 22 moves towards the motor head, causing the leg structure of the electrical mechanical stretching device of movable sofa to unfold first. After the leg structure is completely unfolded such that the limited position contacts the contacting surface, the leg structure is prevented from unfolding mechanically. Thus, the backrest structure of the electrical mechanical stretching device of movable sofa is put down completely. As such, the electrical mechanical stretching device of movable sofa achieves the transition from the status shown in FIG. 1 to FIG. 2 and further to FIG. 3. Vice versa, when motor movable sliding block 22 moves along a direction leaving the motor head, the electrical mechanical stretching device of movable sofa can achieve the transition from the status shown in FIG. 3 to FIG. 2 and further to FIG. 1. When the electrical mechanical stretching device of movable sofa is in the status shown in FIG. 1, i.e., when the leg is completely folded, the electrical driving function of the movable sofa mechanical stretching device is realized.

[0020] Since in the embodiment, the first rotating shaft 1 and the second rotating shaft 7 are rotatably connected to each other via the pin connection, the pin connection of the motor is realized.

[0021] The embodiment eliminates the rotating connection between rotating shaft transmission part 20 and rotatable connecting rod 21, and solves the shaking problem of the electrical driving manner.

[0022] In the embodiment, base 24 is fixedly connected via two bottom connecting pipes 23. The structure is simple. The cost is low. Connections between comparing motor connecting rod 15, comparing electrical connecting rod 9, and base 24 are eliminated.

[0023] The embodiment added a new electrically driving method for the movable sofa, which avoids the electrically driving method in the prior art. The electrical installation and operation efficiency of the movable sofa is improved. The automaticity and comfortableness of the sofa are enhanced.

[0024] Simple variations and equivalent alternations of the present invention are construed as falling within the scope of the present invention.