A manual recovery device for electric sofa leg support

Abstract

The present invention discloses a manual recovery device for an electric sofa leg support, which is intended to solve the problem that in the prior art, an electric sofa structure uses an electric push rod to open or retract a foot pedal, and when the device is powered off or the electric push rod fails, the electric push rod cannot work, and the foot pedal cannot be urgently recovered. The manual recovery device for an electric sofa leg support comprises: a support steel structure; a manual recovery mechanism, wherein the manual recovery mechanism is mounted on the support steel structure; an electric push rod, wherein one end of the electric push rod is hinged on the support steel structure, and the other end of the electric push rod is mounted on the manual recovery mechanism. The present invention first releases the fixation of the electric push rod through the manual recovery mechanism, and then continues to retract the pedal through the manual recovery mechanism. Therefore, the present application can urgently retract the pedal after the electric sofa is powered off or when the electric push rod fails through the setting of the manual recovery mechanism.

Description

Technical Field

[0001] The invention belongs to the technical field of electric sofas, and in particular relates to a manual recovery device for a leg support of an electric sofa. Background Art

[0002] The current electric sofa structure uses an electric push rod to open or retract the foot pedal. When the equipment is powered off or the electric push rod fails, the electric push rod will not work, resulting in the foot pedal being unable to be retracted in an emergency. Especially in compact scenarios such as hyperbaric oxygen chambers, the inability to retract the foot pedal will make it impossible to open the cabin door, resulting in people being unable to get out of the cabin in time, or when people outside the cabin find abnormalities in the cabin, they will be unable to intervene to open the door in time. Summary of the invention

[0003] (1) Technical issues to be solved

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a manual recovery device for the leg support of an electric sofa, which is intended to solve the problem that the electric sofa structure in the prior art adopts an electric push rod to open or retract the foot pedal, and when the equipment is powered off or the electric push rod fails, the electric push rod cannot work, resulting in the foot pedal being unable to be retracted urgently.

[0005] (2) Technical solution

[0006] In order to solve the above technical problems, the present invention provides a manual recovery device for an electric sofa leg support, which comprises:

[0007] Support steel structure;

[0008] A manual recovery mechanism, which is installed on the support steel structure and is used to transmit the push-out action of the electric push rod, thereby retracting the foot pedal of the electric sofa chair;

[0009] An electric push rod, one end of which is hinged on the support steel structure, and the other end of which is installed on the manual recovery mechanism.

[0010] Preferably, the manual bracket steel structure includes two fixed brackets, an articulated bracket hinged to a side away from the two fixed brackets, a connecting cross bar fixedly installed at one end of the two fixed brackets, a supporting cross bar fixedly installed on a side close to the two articulated brackets, a mounting plate fixedly installed on the articulated brackets, and a foot pedal fixedly installed on the mounting plate.

[0011] Furthermore, the manual recovery mechanism includes an upper fixed plate fixedly mounted on one end of the supporting cross bar, the upper fixed plate includes two trapezoidal plates, the two trapezoidal plates are fixedly mounted on a fixed bracket, the ends of the two trapezoidal plates away from the fixed bracket are fixedly connected by a first connecting plate, the ends of the two trapezoidal plates away from the first connecting plate are fixedly connected with an inclined plate, and the inclined plate is fixedly connected to the supporting cross bar.

[0012] Furthermore, the manual recovery mechanism also includes a connecting pin, and the bottom of the two trapezoidal plates are each provided with an upper arc groove, and the upper arc groove is used to accommodate the connecting pin, and the telescopic end of the electric push rod is provided with a first pin hole adapted to the connecting pin, and the connecting pin is fixedly installed in the first pin hole of the electric push rod, and the fixed end of the electric push rod is hinged to the connecting cross bar.

[0013] Furthermore, the manual recovery mechanism also includes a sheet metal structure for fastening and limiting the electric push rod, the sheet metal structure includes two side plates, and a second pin hole is opened on the two trapezoidal plates. A rotating pin is rotatably installed in the second pin hole, and the two ends of the rotating pin are respectively fixedly connected to the two side plates.

[0014] Furthermore, the two side panels are fixedly connected via a support plate.

[0015] Furthermore, both side plates are provided with lower arc grooves, and the positions of the lower arc grooves correspond to the positions of the upper arc grooves.

[0016] Furthermore, a torsion spring is sleeved on the rotating pin, and the torsion spring is used for automatically pushing the two side plates apart to rotate.

[0017] Furthermore, an upper support ear is fixedly installed on one side of the two trapezoidal plates away from each other, and a lower support ear is fixedly connected to one side of the two side plates away from each other and at a position corresponding to the upper support ear. A pin hole is opened in the middle of the upper support ear and the lower support ear, and a pin is inserted in the pin hole.

[0018] Furthermore, a through hole for installing a linkage wire rope is provided at the protruding end of the bayonet, one end of the linkage wire rope is fixedly mounted on the bayonet, the other end of the linkage wire rope is fixedly mounted on the pedal, and a pull ring is fixedly mounted on the linkage wire rope.

[0019] Beneficial Effects

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention first releases the fixation of the electric push rod through the manual recovery mechanism, and then continues to retract the pedal through the manual recovery mechanism. Therefore, the present application can urgently retract the pedal after the electric sofa is powered off or the electric push rod itself fails through the setting of the manual recovery mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional schematic diagram of the present invention.

[0023] Figure 2 It is a three-dimensional schematic diagram of the manual recovery mechanism of the present invention.

[0024] Figure 3 It is a top view schematic diagram of the manual recovery mechanism of the present invention.

[0025] Figure 4 It is a schematic diagram of the upper fixing plate of the present invention.

[0026] Figure 5 It is a schematic diagram of another viewing angle of the upper fixing plate of the present invention.

[0027] Figure 6 It is a schematic diagram of the sheet metal structure of the present invention.

[0028] Figure 7 It is a schematic diagram of the sheet metal structure of the present invention from another viewing angle.

[0029] Figure 8 It is a schematic diagram of the pull ring of the present invention being installed on an electric sofa.

[0030] The symbols in the accompanying drawings are:

[0031] 1. Bracket steel structure; 2. Manual recovery mechanism; 3. Electric push rod; 101. Support cross bar; 201. Upper fixed plate; 202. Connecting pin; 203. Sheet metal structure; 204. Bayonet pin; 205. Linking steel wire rope; 206. Pull ring; 2011. Trapezoidal plate; 2012. First connecting plate; 2013. Inclined plate; 2014. Upper support ear; 2015. Rotating pin; 2031. Side plate; 2032. Support plate; 2033. Lower support ear. DETAILED DESCRIPTION

[0032] This specific embodiment is a manual recovery device for electric sofa leg support, and its structural schematic diagram is as follows: Figure 1-Figure 8 As shown, the manual recovery device for the electric sofa leg support comprises: a support steel structure 1, a manual recovery mechanism 2 and an electric push rod 3, wherein the manual recovery mechanism 2 is mounted on the support steel structure 1, and the manual recovery mechanism 2 is used to transmit the push-out action of the electric push rod 3, so as to retract the footrest of the electric sofa chair, and one end of the electric push rod 3 is hinged on the support steel structure 1, and the other end of the electric push rod 3 is mounted on the manual recovery mechanism 2;

[0033] When the pedal needs to be retracted after the electric sofa is powered off or the electric push rod 3 itself fails, the electric push rod 3 is first released through the manual recovery mechanism 2, and then the pedal is continued to be retracted through the manual recovery mechanism 2. Therefore, the present application can urgently retract the pedal after the electric sofa is powered off or the electric push rod 3 itself fails through the setting of the manual recovery mechanism 2.

[0034] The manual support steel structure 1 includes two fixed supports, an articulated support hinged to a side away from the two fixed supports, a connecting cross bar fixedly installed at one end of the two fixed supports, a supporting cross bar 101 fixedly installed to a side close to the two articulated supports, a mounting plate fixedly installed on the articulated supports, and a foot pedal fixedly installed on the mounting plate;

[0035] By setting the connecting cross bar, the two fixed brackets can be connected as a whole. At the same time, the fixed bracket supports the hinged bracket. By setting the supporting cross bar 101, the two hinged brackets can be connected as a whole. The principle of the movement of the hinged bracket is the existing technology and will not be repeated here.

[0036] The manual recovery mechanism 2 includes an upper fixed plate 201 fixedly mounted on one end of the support cross bar 101, and the upper fixed plate 201 includes two trapezoidal plates 2011, and the two trapezoidal plates 2011 are fixedly mounted on the fixed bracket, and the ends of the two trapezoidal plates 2011 away from the fixed bracket are fixedly connected through a first connecting plate 2012, and the ends of the two trapezoidal plates 2011 away from the first connecting plate 2012 are fixedly connected with an inclined plate 2013, and the inclined plate 2013 is fixedly connected to the support cross bar 101;

[0037] The first connecting plate 2012 can connect the two trapezoidal plates 2011 into a whole, and the inclined plate 2013 can support and fix the trapezoidal plates 2011, so that the trapezoidal plates 2011 are more firmly fixed on the supporting cross bar 101, thereby improving the stability of the trapezoidal plates 2011.

[0038] The manual recovery mechanism 2 also includes a connecting pin 202. The bottoms of the two trapezoidal plates 2011 are each provided with an upper arc groove, and the upper arc groove is used to accommodate the connecting pin 202. The telescopic end of the electric push rod 3 is provided with a first pin hole adapted to the connecting pin 202. The connecting pin 202 is fixedly installed in the first pin hole of the electric push rod 3. The fixed end of the electric push rod 3 is hinged on the connecting cross bar.

[0039] The telescopic end of the electric push rod 3 is inserted between the two trapezoidal plates 2011, and a gap is left between the telescopic end of the electric push rod 3 and the two trapezoidal plates 2011, and both ends of the connecting pin 202 are located inside the upper arc groove. The setting of the upper arc groove can not only conveniently accommodate the connecting pin 202, but also prevent the connecting pin 202 from sliding.

[0040] The manual recovery mechanism 2 also includes a sheet metal structure 203 for fastening and limiting the electric push rod 3. The sheet metal structure 203 includes two side plates 2031. The two trapezoidal plates 2011 are each provided with a second pin hole. A rotating pin 2015 is rotatably installed in the second pin hole. Both ends of the rotating pin 2015 are fixedly connected to the two side plates 2031 respectively. The two side plates 2031 are respectively located on a side away from the two trapezoidal plates 2011, and a small gap is left between the side plates 2031 and the trapezoidal plates 2011.

[0041] The two side plates 2031 are fixedly connected by a support plate 2032, and the two side plates 2031 can be connected as a whole by the arrangement of the support plate 2032;

[0042] Both side panels 2031 are provided with lower arc grooves, and the positions of the lower arc grooves correspond to those of the upper arc grooves. Through the setting of the lower arc grooves, the bottom of the connecting pin 202 can be supported, and the connecting pin 202 can be adapted with the cooperation of the upper arc groove and the lower arc groove, and can prevent the connecting pin 202 from sliding.

[0043] A torsion spring is sleeved on the rotating pin 2015, and the torsion spring is used to automatically push the two side plates 2031 apart to rotate;

[0044] An upper support ear 2014 is fixedly installed on the side away from the two trapezoidal plates 2011, and a lower support ear 2033 is fixedly connected to the side of the two side plates 2031 away from the upper support ear 2014 and at a position corresponding to the upper support ear 2014. A bayonet hole is opened in the middle of the upper support ear 2014 and the lower support ear 2033, and a bayonet pin 204 is inserted into the bayonet pin hole;

[0045] The bayonet 204 includes a protruding end, a cylinder, and a retractable spring column installed in the cylinder. After the bayonet 204 is inserted into the bayonet holes of the upper support ear 2014 and the lower support ear 2033, the bayonet 204 abuts against the upper support ear 2014 to prevent the bayonet 204 from falling, and one end of the spring column extends from the inside of the cylinder to contact the lower support ear 2033, which limits the lower support ear 2033, thereby preventing the side plate 2031 from falling. One end of the spring column is an arc-shaped surface. When the bayonet 204 is moved out of the bayonet holes provided in the lower support ear 2033 and the bayonet holes provided in the upper support ear 2014, since one end of the spring column is an arc-shaped surface, under the action of external force, one end of the spring column can be retracted into the inside of the cylinder, thereby the bayonet 204 can be moved out from the bayonet holes.

[0046] The protruding end of the pin 204 is provided with a through hole for installing the linkage wire rope 205. One end of the linkage wire rope 205 is fixedly installed on the pin 204, and the other end of the linkage wire rope 205 is fixedly installed on the foot pedal (not shown in the figure), and a pull ring 206 is fixedly installed on the linkage wire rope 205. The setting of the pull ring 206 makes it convenient for the user to pull the linkage wire rope 205.

[0047] When the electric sofa is powered off or the electric push rod 3 itself fails and the pedal needs to be retracted, the linkage wire rope 205 is pulled through the pull ring 206, and the linkage wire rope 205 drives the protruding end of the bayonet 204 to move and remove the bayonet 204 from the bayonet hole opened in the lower support ear 2033 and the bayonet hole opened in the upper support ear 214. At this time, the bayonet 204 releases the limit on the lower support ear 2033, and the side plate 2031 also releases the limit. The torsion spring is no longer compressed and begins to return to its original state. In the process of the torsion spring returning to its original state, it can push the two side plates 2031 to rotate around the rotating pin 20 15 rotates, and the lower arc groove of the side plate 2031 is separated from the connecting pin 202 after the side plate 2031 rotates. After the connecting pin 202 loses its support, the telescopic end of the electric push rod 3 falls down and separates from the upper arc groove provided in the upper fixed plate 201 under the action of the gravity of the electric push rod 3. At this time, the connection between the electric push rod 3 and the supporting cross bar 101 is released, and then the linkage wire rope 205 is continuously pulled through the pull ring 206 to drive the foot pedal to be retracted. In the process of retracting the foot pedal, the mounting plate is moved, and in the process of moving the mounting plate, the articulated bracket is contracted, and in the process of contracting the articulated bracket, the supporting cross bar 101 is moved and retracted.

[0048] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention may also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. A manual recovery device for electric sofa leg support, characterized in that: The electric sofa leg support manual recovery device comprises: Support steel structure (1); A manual recovery mechanism (2), the manual recovery mechanism (2) being mounted on the support steel structure (1), the manual recovery mechanism (2) being used to transmit the pushing action of the electric push rod (3), thereby retracting the foot pedal of the electric sofa chair; An electric push rod (3), one end of which is hinged on the support steel structure (1), and the other end of which is mounted on the manual recovery mechanism (2).

2. The manual recovery device for electric sofa leg support according to claim 1, characterized in that: The manual support steel structure (1) comprises two fixed supports, an articulated support hinged to a side away from the two fixed supports, a connecting cross bar fixedly installed at one end of the two fixed supports, a supporting cross bar (101) fixedly installed to a side close to the two articulated supports, a mounting plate fixedly installed on the articulated supports, and a foot pedal fixedly installed on the mounting plate.

3. The manual recovery device for electric sofa leg support according to claim 2, characterized in that: The manual recovery mechanism (2) comprises an upper fixed plate (201) fixedly mounted on one end of a supporting cross bar (101), the upper fixed plate (201) comprising two trapezoidal plates (2011), the two trapezoidal plates (2011) being fixedly mounted on a fixed bracket, the two trapezoidal plates (2011) being fixedly connected at one end away from the fixed bracket via a first connecting plate (2012), the two trapezoidal plates (2011) being fixedly connected at one end away from the first connecting plate (2012) with an inclined plate (2013), and the inclined plate (2013) being fixedly connected to the supporting cross bar (101).

4. The manual recovery device for electric sofa leg support according to claim 3, characterized in that: The manual recovery mechanism (2) also includes a connecting pin (202), the bottoms of the two trapezoidal plates (2011) are each provided with an upper arc groove, and the upper arc groove is used to accommodate the connecting pin (202), the telescopic end of the electric push rod (3) is provided with a first pin hole adapted to the connecting pin (202), the connecting pin (202) is fixedly installed in the first pin hole of the electric push rod (3), and the fixed end of the electric push rod (3) is hinged on the connecting cross bar.

5. The manual recovery device for electric sofa leg support according to claim 4, characterized in that: The manual recovery mechanism (2) also includes a sheet metal structure (203) for fastening and limiting the electric push rod (3), the sheet metal structure (203) including two side plates (2031), the two trapezoidal plates (2011) are each provided with a second pin hole, a rotating pin (2015) is rotatably installed in the second pin hole, and the two ends of the rotating pin (2015) are respectively fixedly connected to the two side plates (2031).

6. The manual recovery device for electric sofa leg support according to claim 5, characterized in that: The two side plates (2031) are fixedly connected via a support plate (2032).

7. The manual recovery device for electric sofa leg support according to claim 6, characterized in that: The two side plates (2031) are each provided with a lower arc-shaped groove, and the position of the lower arc-shaped groove corresponds to the position of the upper arc-shaped groove.

8. The manual recovery device for electric sofa leg support according to claim 6, characterized in that: The rotating pin (2015) is sleeved with a torsion spring, and the torsion spring is used to automatically push the two side plates (2031) apart for rotation.

9. The manual recovery device for electric sofa leg support according to claim 8, characterized in that: An upper support ear (2014) is fixedly installed on one side of the two trapezoidal plates (2011) that is away from each other, and a lower support ear (2033) is fixedly connected to one side of the two side plates (2031) that is away from each other and at a position corresponding to the upper support ear (2014), and a bayonet hole is opened in the middle of the upper support ear (2014) and the lower support ear (2033), and a bayonet (204) is inserted into the bayonet hole.

10. The manual recovery device for electric sofa leg support according to claim 9, characterized in that: A through hole for installing a linkage wire rope (205) is provided at the protruding end of the bayonet (204); one end of the linkage wire rope (205) is fixedly installed on the bayonet (204); the other end of the linkage wire rope (205) is fixedly installed on the pedal; and a pull ring (206) is fixedly installed on the linkage wire rope (205).

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