Electric seat bracket with double pedal support plates

Abstract

The utility model discloses an electric seat bracket with double pedal support plates, and relates to the technical field of seats. According to the technical scheme, the device comprises a middle supporting frame, a first motor is installed on the middle supporting frame, the power output end of the first motor is connected with a first telescopic push rod, side supporting frames are installed at the two ends of the middle supporting frame respectively, and the two side supporting frames are oppositely arranged; adjusting supports are movably installed on the two side supporting frames respectively, and the two adjusting supports are oppositely arranged. The adjusting support comprises a first transmission rod, a second transmission rod, a third transmission rod, a fourth transmission rod, a first pedal supporting plate, a fifth transmission rod, a sixth transmission rod, a fixing plate, a seventh transmission rod and a second pedal supporting plate. And positioning slots are formed in the outer sides of the side supporting frames. Under the driving action of the first motor, the first pedal supporting plate and the second pedal supporting plate can be synchronously unfolded or folded, and the use comfort level is high.

Description

Technical Field

[0001] The utility model relates to the technical field of seats, in particular to an electric seat bracket with double footrest support plates. Background Art

[0002] A seat usually includes a seat frame and components such as a seat, a backrest, a footrest and armrests installed on the seat frame. In the existing technology, the structure of the seat frame is usually relatively simple and the position is fixed. It is difficult to deform and use it according to the user's needs, resulting in certain limitations in use and bringing inconvenience to people.

[0003] With the advancement of technology, electric seat supports that can adjust the seat back and footrest have gradually appeared.

[0004] Chinese patent document CN116473376A discloses an electric chair support comprising a support beam, a motor mounted on the support beam, and a push rod connected to the power output end of the motor; support plates fixedly connected at each end of the support beam, and adjustment brackets movably mounted on the two support plates, the two support plates being arranged opposite each other; the adjustment brackets comprising a seat support plate, a backrest support plate, a footrest support plate, a first transmission plate, a second transmission plate, a third transmission plate, a fourth transmission plate, a fifth transmission plate, a sixth transmission plate, a seventh transmission plate, and an eighth transmission plate. Patent document CN116473376A enables the backrest support plate and the footrest support plate to be simultaneously retracted or unfolded under the drive of the motor, achieving excellent performance.

[0005] However, the patent document CN116473376A also has the following technical defects: (1) The adjustment bracket of the electric seat bracket has only one footrest support plate, which can only support a narrow footrest. When the user sits on the seat, there is only a narrow footrest to support both feet, which is less comfortable. If the developer chooses to extend the length of the footrest support plate of the electric seat bracket, then when the electric seat bracket is retracted, the extended footrest support plate will be restricted by the space below the seat and will not be able to be retracted into the seat. (2) The armrest bracket and seat armrest of the electric seat bracket are fixed on the seat support plate. The armrest bracket, seat armrest and other armrest components occupy a large space, making the electric seat bracket inconvenient to package and transport. The seat support plate of the electric seat bracket does not have a mechanism for directly clamping the armrest component, making it inconvenient to install the armrest component. Utility Model Content

[0006] The technical problem to be solved by the present invention is to provide an electric chair bracket with two footrest supports and capable of unfolding and folding the two footrest supports in view of the above-mentioned deficiencies in the prior art.

[0007] In order to solve the above technical problems, the technical solution of the utility model is: an electric seat bracket with double footrest supports, including a middle support frame, a first motor is installed on the middle support frame, a power output end of the first motor is connected to a first telescopic push rod extending forward, side support frames are respectively installed at both ends of the middle support frame, the two side support frames are arranged opposite to each other, and adjustment brackets are respectively movably installed on the two side support frames, and the two adjustment brackets are arranged opposite to each other; the adjustment bracket includes a first transmission rod, a second transmission rod, a third transmission rod, a fourth transmission rod, a first footrest support plate, a fifth transmission rod, a sixth transmission rod, a fixed plate, a seventh transmission rod and a second footrest support plate, the rear end of the first transmission rod is rotatably connected to the side support frames, the front end of the first transmission rod is rotatably connected to the rear end of the second transmission rod, the middle of the second transmission rod is rotatably connected to the middle of the third transmission rod, the front end of the second transmission rod is rotatably connected to the The rear end of the first pedal support plate is rotatably connected, the rear end of the third transmission rod is rotatably connected to the side support frame, the front end of the third transmission rod is rotatably connected to the rear end of the fourth transmission rod, the front end of the fourth transmission rod is rotatably connected to the middle part of the first foot support plate, the rear end of the fifth transmission rod is rotatably connected to the front end of the second transmission rod, the front end of the fifth transmission rod is rotatably connected to the rear end of the sixth transmission rod, the middle part of the sixth transmission rod is rotatably connected to the middle part of the fixed plate, the front end of the sixth transmission rod is rotatably connected to the rear end of the second foot support plate, the rear end of the fixed plate is fixedly connected to the front end of the first foot support plate, the front end of the fixed plate is rotatably connected to the rear end of the seventh transmission rod, and the front end of the seventh transmission rod is rotatably connected to the front end of the second foot support plate; the first connecting rod is fixedly connected between the third transmission rods of the two adjusting brackets, and the front end of the first telescopic push rod is connected to the first connecting rod; a positioning slot is provided on the outer side of the side support frame.

[0008] Preferably, the connection between the first transmission rod and the side support frame is provided with a first rotating shaft, the connection between the first transmission rod and the second transmission rod is provided with a second rotating shaft, the connection between the second transmission rod and the third transmission rod is provided with a third rotating shaft, the connection between the second transmission rod and the first foot support plate is provided with a fourth rotating shaft, the connection between the third transmission rod and the side support frame is provided with a fifth rotating shaft, the connection between the third transmission rod and the fourth transmission rod is provided with a sixth rotating shaft, the connection between the fourth transmission rod and the first foot support plate is provided with a seventh rotating shaft, the connection between the fifth transmission rod and the second transmission rod is provided with an eighth rotating shaft, the connection between the fifth transmission rod and the sixth transmission rod is provided with a ninth rotating shaft, the connection between the sixth transmission rod and the fixed plate is provided with a tenth rotating shaft, the connection between the sixth transmission rod and the second foot support plate is provided with an eleventh rotating shaft, the fixed plate is fixedly connected to the first foot support plate, the connection between the fixed plate and the seventh transmission rod is provided with a twelfth rotating shaft, and the connection between the seventh transmission rod and the second foot support plate is provided with a thirteenth rotating shaft.

[0009] Preferably, on the side support frame, the fifth rotating shaft is located in front of the first rotating shaft; on the second transmission rod, the fourth rotating shaft is located in front of the eighth rotating shaft; the first footrest support plate is provided with a first limiting shaft and a recess, the first limiting shaft is used to limit the fourth transmission rod to the end position of the upward rotation when the electric seat bracket is in the open state; the recess is used to accommodate the eighth rotating shaft when the electric seat bracket is in the retracted state; the sixth transmission rod is provided with a second limiting shaft, the second limiting shaft is used to limit the seventh transmission rod to the end position of the downward rotation when the electric seat bracket is in the open state.

[0010] Preferably, two first connecting plates are provided on the middle support frame, the first motor is provided with a first connecting head, the first connecting head is installed between the two first connecting plates and is rotatably connected to the two first connecting plates, and a fourteenth rotating shaft is provided between the first connecting head and the first connecting plate; two second connecting plates are provided in the middle of the first connecting rod, the front end of the first telescopic push rod is installed between the two second connecting plates and is rotatably connected to the two second connecting plates, and a fifteenth rotating shaft is provided between the front end of the first telescopic push rod and the second connecting plate.

[0011] Preferably, the adjustment bracket also includes an eighth transmission rod and a backrest support plate, the front end of the eighth transmission rod is rotatably connected to the middle part of the first transmission rod, the rear end of the eighth transmission rod is rotatably connected to the lower end of the backrest support plate, and the middle part of the backrest support plate is rotatably connected to the rear end of the side support frame; a sixteenth rotating shaft is provided at the connection between the eighth transmission rod and the first transmission rod, a seventeenth rotating shaft is provided at the connection between the eighth transmission rod and the backrest support plate, and an eighteenth rotating shaft is provided at the connection between the backrest support plate and the side support frame.

[0012] Preferably, a second motor is installed on the middle support frame, and the power output end of the second motor is connected to a second telescopic push rod extending backward; the adjustment bracket also includes a backrest support plate, the middle part of the backrest support plate is rotatably connected to the rear end of the side support frame, and a second connecting rod is fixedly connected between the backrest support plates of the two adjustment brackets, and the rear end of the second telescopic push rod is connected to the second connecting rod.

[0013] Preferably, a nineteenth rotating shaft is provided at the connection between the chair back support plate and the side support frame; two third connecting plates are provided on the middle support frame, the second motor is provided with a second connecting head, the second connecting head is installed between the two third connecting plates and is rotatably connected to the two third connecting plates, and a twentieth rotating shaft is provided between the second connecting head and the third connecting plate; two fourth connecting plates are provided in the middle of the second connecting rod, the rear end of the second telescopic push rod is installed between the two fourth connecting plates and is rotatably connected to the two fourth connecting plates, and a twenty-first rotating shaft is provided between the rear end of the second telescopic push rod and the fourth connecting plate.

[0014] Preferably, the middle support frame includes a first support beam and a second support beam, the first connecting piece and the first motor are installed on the first support beam, and the third connecting piece and the second motor are installed on the second support beam.

[0015] Preferably, the electric seat bracket includes a chair foot, on which a pneumatic lift rod or an electric lift rod is vertically installed, and the middle support frame is fixedly installed on the pneumatic lift rod or the electric lift rod, and a lift rod switch is provided on the pneumatic lift rod or the electric lift rod.

[0016] Preferably, the side support frame includes an integrally formed horizontal plate and a vertical plate, a plurality of mounting holes for mounting the seat are provided on the horizontal plate, two fixing members are installed side by side on the outer side of the vertical plate, and the positioning slot is vertically installed on the outer side of the fixing member, and the positioning slot is used for slidingly inserting the armrest assembly.

[0017] The beneficial effects of the present invention are as follows: the present invention can drive the first telescopic push rod to push forward or pull backward by the first motor, and then synchronously drive the first transmission rod, the second transmission rod, the third transmission rod, the fourth transmission rod, the first footrest support plate, the fifth transmission rod, the sixth transmission rod, the fixed plate, the seventh transmission rod and the second footrest support plate to move respectively according to a set method, so as to realize the synchronous expansion or contraction of the first footrest support plate and the second footrest support plate; when the first footrest support plate and the second footrest support plate are synchronously expanded, the first footrest support plate can be used to support the user's calf part, and the second footrest support plate can be used to support the user's foot, which is highly comfortable; when the first footrest support plate and the second footrest support plate are synchronously contracted, the second footrest support plate can be further retracted to the rear of the first footrest support plate, thereby avoiding being restricted by the space at the lower end of the seat, so that the first footrest support plate and the second footrest support plate can be retracted into the seat. Since the outer side of the side support frame of the utility model is provided with a positioning slot, the side support frame of the utility model can be conveniently disassembled and assembled with the armrest assembly, and the electric seat bracket and the armrest assembly can be packaged and transported separately, thereby greatly reducing the space occupied by the electric seat bracket during packaging and improving the convenience of packaging and transportation of the electric seat bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is one of the overall structural diagrams of the electric seat bracket in the open state of Example 1.

[0019] Figure 2 This is the second overall structural diagram of the electric seat bracket in the open state of Example 1.

[0020] Figure 3 This is an overall structural diagram of the electric seat bracket in the folded state of Example 1.

[0021] Figure 4This is one of the overall structural diagrams of the electric seat bracket in the open state of Example 2.

[0022] Figure 5 This is the second overall structural diagram of the electric seat bracket in the open state of the second embodiment.

[0023] Figure 6 This is an overall structural diagram of the electric seat bracket in the folded state of Example 2. DETAILED DESCRIPTION

[0024] The structural principle and working principle of the present invention are further described in detail below with reference to the accompanying drawings.

[0025] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back" and the like indicate directions or positional relationships based on the attached Figure 1 、 2 , 4, and 5 show the orientation or position relationship, the "front end" of the electric seat bracket refers to the end close to the second footrest support plate, and the "rear end" of the electric seat bracket refers to the end close to the seat back support plate. Example 1

[0026] like Figure 1-Figure 3As shown, embodiment 1 is an electric chair bracket with double footrest supports, including a middle support frame 1, a first motor 2 is installed on the middle support frame 1, and the power output end of the first motor 2 is connected to a first telescopic push rod 3 extending forward, and side support frames 4 are respectively installed at both ends of the middle support frame 1, and the two side support frames 4 are arranged opposite to each other. Adjustment brackets are respectively movably installed on the two side support frames 4, and the two adjustment brackets are arranged opposite to each other; the adjustment bracket includes a first transmission rod 5, a second transmission rod 6, a third transmission rod 7, a fourth transmission rod 8, a first footrest support plate 9, a fifth transmission rod 10, a sixth transmission rod 11, a fixed plate 12, a seventh transmission rod 13 and a second footrest support plate 14, the rear end of the first transmission rod 5 is rotatably connected to the side support frame 4, the front end of the first transmission rod 5 is rotatably connected to the rear end of the second transmission rod 6, the middle part of the second transmission rod 6 is rotatably connected to the middle part of the third transmission rod 7, and the front end of the second transmission rod 6 is rotatably connected to the rear end of the first footrest support plate 9 The rear end of the third transmission rod 7 is rotatably connected to the side support frame 4, the front end of the third transmission rod 7 is rotatably connected to the rear end of the fourth transmission rod 8, the front end of the fourth transmission rod 8 is rotatably connected to the middle part of the first foot support plate 9, the rear end of the fifth transmission rod 10 is rotatably connected to the front end of the second transmission rod 6, the front end of the fifth transmission rod 10 is rotatably connected to the rear end of the sixth transmission rod 11, the middle part of the sixth transmission rod 11 is rotatably connected to the middle part of the fixed plate 12, the front end of the sixth transmission rod 11 is rotatably connected to the rear end of the second foot support plate 14, the rear end of the fixed plate 12 is fixedly connected to the front end of the first foot support plate 9, the front end of the fixed plate 12 is rotatably connected to the rear end of the seventh transmission rod 13, and the front end of the seventh transmission rod 13 is rotatably connected to the front end of the second foot support plate 14; a first connecting rod 15 is fixedly connected between the third transmission rods 7 of the two adjusting brackets, and the front end of the first telescopic push rod 3 is connected to the first connecting rod 15; a positioning slot 46 is provided on the outer side of the side support frame 4. The first motor 2 and the first telescopic push rod 3 are preferably driven by a conventional worm gear transmission. The first footrest support plate 9 and the second footrest support plate 14 are each provided with a plurality of footrest mounting holes. The first footrest support plate 9 can be used to mount a footrest supporting the user's calf through the footrest mounting holes, and the second footrest support plate 14 can be used to mount a footrest supporting the user's foot through the footrest mounting holes.

[0027] like Figure 1-Figure 3As shown, a first rotating shaft 16 is provided at the connection between the first transmission rod 5 and the side support frame 4, a second rotating shaft 17 is provided at the connection between the first transmission rod 5 and the second transmission rod 6, a third rotating shaft 18 is provided at the connection between the second transmission rod 6 and the third transmission rod 7, a fourth rotating shaft 19 is provided at the connection between the second transmission rod 6 and the first foot support plate 9, a fifth rotating shaft 20 is provided at the connection between the third transmission rod 7 and the side support frame 4, a sixth rotating shaft 21 is provided at the connection between the third transmission rod 7 and the fourth transmission rod 8, a seventh rotating shaft 22 is provided at the connection between the fourth transmission rod 8 and the first foot support plate 9, An eighth rotating shaft 23 is provided at the connection between the fifth transmission rod 10 and the second transmission rod 6, a ninth rotating shaft 24 is provided at the connection between the fifth transmission rod 10 and the sixth transmission rod 11, a tenth rotating shaft 25 is provided at the connection between the sixth transmission rod 11 and the fixed plate 12, an eleventh rotating shaft 26 is provided at the connection between the sixth transmission rod 11 and the second foot support plate 14, the fixed plate 12 and the first foot support plate 9 are fixedly connected by screws, a twelfth rotating shaft 27 is provided at the connection between the fixed plate 12 and the seventh transmission rod 13, and a thirteenth rotating shaft 28 is provided at the connection between the seventh transmission rod 13 and the second foot support plate 14. On the side support frame 4, the fifth rotating shaft 20 is located in front of the first rotating shaft 16; on the second transmission rod 6, the fourth rotating shaft 19 is located in front of the eighth rotating shaft 23; the first footrest support plate 9 is provided with a first limiting shaft 29 and a recess 30, the first limiting shaft 29 is used to limit the fourth transmission rod 8 to the end position of the upward rotation when the electric seat bracket is in the open state; the recess 30 is used to accommodate the eighth rotating shaft 23 when the electric seat bracket is in the retracted state; the sixth transmission rod 11 is provided with a second limiting shaft 31, the second limiting shaft 31 is used to limit the end position of the downward rotation of the seventh transmission rod 13 when the electric seat bracket is in the open state.

[0028] like Figure 1-Figure 3 As shown, two first connecting plates 32 are provided on the middle support frame 1, and the first motor 2 is provided with a first connecting head 33. The first connecting head 33 is installed between the two first connecting plates 32 and is rotatably connected to the two first connecting plates 32. A fourteenth rotating shaft 34 is provided between the first connecting head 33 and the first connecting plate 32; two second connecting plates 35 are provided in the middle of the first connecting rod 15, and the front end of the first telescopic push rod 3 is installed between the two second connecting plates 35 and is rotatably connected to the two second connecting plates 35. A fifteenth rotating shaft 36 is provided between the front end of the first telescopic push rod 3 and the second connecting plate 35.

[0029] like Figure 1-Figure 3As shown, the adjustment bracket also includes an eighth transmission rod 37 and a backrest support plate 38. The front end of the eighth transmission rod 37 is rotatably connected to the middle portion of the first transmission rod 5, the rear end of the eighth transmission rod 37 is rotatably connected to the lower end of the backrest support plate 38, and the middle portion of the backrest support plate 38 is rotatably connected to the rear end of the side support frame 4. A sixteenth rotation axis 39 is provided at the connection between the eighth transmission rod 37 and the first transmission rod 5, a seventeenth rotation axis 40 is provided at the connection between the eighth transmission rod 37 and the backrest support plate 38, and an eighteenth rotation axis 41 is provided at the connection between the backrest support plate 38 and the side support frame 4. The backrest support plate 38 is provided with a plurality of backrest mounting holes, through which a backrest that supports the user's back can be mounted.

[0030] like Figure 1-Figure 3 As shown, the electric chair frame includes a chair leg 42, on which a pneumatic lift rod 43 or an electric lift rod is vertically mounted. The central support frame 1 is fixedly mounted on the pneumatic lift rod 43 or the electric lift rod. The pneumatic lift rod 43 or the electric lift rod is provided with a lift rod switch 44, which is externally connected to an adjustment handle. The chair leg can be a multi-claw chair leg, a disc chair leg, or a wheel chair leg.

[0031] like Figure 1-Figure 3 As shown, the side support frame 4 includes an integrally formed horizontal plate 401 and a vertical plate 402. The horizontal plate 401 is provided with a plurality of mounting holes 403 for mounting the seat. Two fixing members 45 are installed side by side on the outer side of the vertical plate 402. The positioning slot 46 is vertically installed on the outer side of the fixing member 45. The positioning slot 46 is used for slidingly inserting the armrest assembly.

[0032] In the first embodiment, the electric seat support frame opens as follows: the first motor 2 drives the first telescopic push rod 3 to extend forward, which pushes the first connecting rod 15 forward. The first connecting rod 15 pushes the third transmission rod 7 to swing forward. The third transmission rod 7 pushes the second transmission rod 6 and the fourth transmission rod 8 forward and pulls the first transmission rod 5 to swing forward. The second transmission rod 6 and the fourth transmission rod 8 then push the first footrest support plate 9, the fifth transmission rod 10, the sixth transmission rod 11, the fixed plate 12, the seventh transmission rod 13, and the second footrest support plate 14 to respectively unfold forward, thereby achieving the forward opening of the first footrest support plate 9 and the second footrest support plate 14. As the first transmission rod 5 swings forward, it pulls the eighth transmission rod 37 forward. The eighth transmission rod 37 then pulls the lower end of the seat back support plate 38 forward, causing the upper end of the seat back support plate 38 to swing backward, thereby achieving the backward opening of the seat back support plate 38. During the opening process, the various components of the two adjustment brackets move synchronously, and the driving of the first motor 2 is also a linear process. The user can control the first motor 2 to stop driving at any time according to personal preference, so that the first footrest support plate 9, the second footrest support plate 14 and the chair back support plate 38 stay at any position during the opening process.

[0033] In the first embodiment, the electric seat support stowage process is as follows: the first motor 2 drives the first telescopic push rod 3 to retract rearward, which pulls the first connecting rod 15 backward. The first connecting rod 15 pulls the third transmission rod 7 to swing backward. The third transmission rod 7 pulls the second transmission rod 6 and the fourth transmission rod 8 backward and pushes the first transmission rod 5 to swing backward. The second transmission rod 6 and the fourth transmission rod 8 then pull the first footrest support plate 9, the fifth transmission rod 10, the sixth transmission rod 11, the fixed plate 12, the seventh transmission rod 13, and the second footrest support plate 14 backward, thereby stowing the first footrest support plate 9 and the second footrest support plate 14. As the first transmission rod 5 swings backward, it pushes the eighth transmission rod 37 backward. The eighth transmission rod 37 then pushes the lower end of the seat back support plate 38 backward, causing the upper end of the seat back support plate 38 to swing forward, thereby stowing the seat back support plate 38 forward. During the folding process, the various components of the two adjustment brackets move synchronously, and the driving of the first motor 2 is also a linear process. The user can control the first motor 2 to stop driving at any time according to personal preference, so that the first footrest support plate 9, the second footrest support plate 14 and the chair back support plate 38 stay at any position during the folding process. Example 2

[0034] like Figure 4-Figure 6As shown, embodiment 2 is an electric chair bracket with double footrest supports, including a middle support frame 1, a first motor 2 is installed on the middle support frame 1, and the power output end of the first motor 2 is connected to a first telescopic push rod 3 extending forward, and side support frames 4 are respectively installed at both ends of the middle support frame 1, and the two side support frames 4 are arranged opposite to each other. Adjustment brackets are respectively movably installed on the two side support frames 4, and the two adjustment brackets are arranged opposite to each other; the adjustment bracket includes a first transmission rod 5, a second transmission rod 6, a third transmission rod 7, a fourth transmission rod 8, a first footrest support plate 9, a fifth transmission rod 10, a sixth transmission rod 11, a fixed plate 12, a seventh transmission rod 13 and a second footrest support plate 14, the rear end of the first transmission rod 5 is rotatably connected to the side support frame 4, the front end of the first transmission rod 5 is rotatably connected to the rear end of the second transmission rod 6, the middle part of the second transmission rod 6 is rotatably connected to the middle part of the third transmission rod 7, and the front end of the second transmission rod 6 is rotatably connected to the rear end of the first footrest support plate 9 The rear end of the third transmission rod 7 is rotatably connected to the side support frame 4, the front end of the third transmission rod 7 is rotatably connected to the rear end of the fourth transmission rod 8, the front end of the fourth transmission rod 8 is rotatably connected to the middle part of the first foot support plate 9, the rear end of the fifth transmission rod 10 is rotatably connected to the front end of the second transmission rod 6, the front end of the fifth transmission rod 10 is rotatably connected to the rear end of the sixth transmission rod 11, the middle part of the sixth transmission rod 11 is rotatably connected to the middle part of the fixed plate 12, the front end of the sixth transmission rod 11 is rotatably connected to the rear end of the second foot support plate 14, the rear end of the fixed plate 12 is fixedly connected to the front end of the first foot support plate 9, the front end of the fixed plate 12 is rotatably connected to the rear end of the seventh transmission rod 13, and the front end of the seventh transmission rod 13 is rotatably connected to the front end of the second foot support plate 14; a first connecting rod 15 is fixedly connected between the third transmission rods 7 of the two adjusting brackets, and the front end of the first telescopic push rod 3 is connected to the first connecting rod 15; a positioning slot 46 is provided on the outer side of the side support frame 4. The first motor 2 and the first telescopic push rod 3 are preferably driven by a conventional worm gear transmission. The first footrest support plate 9 and the second footrest support plate 14 are each provided with a plurality of footrest mounting holes. The first footrest support plate 9 can be used to mount a footrest supporting the user's calf through the footrest mounting holes, and the second footrest support plate 14 can be used to mount a footrest supporting the user's foot through the footrest mounting holes.

[0035] like Figure 4-Figure 6As shown, a first rotating shaft 16 is provided at the connection between the first transmission rod 5 and the side support frame 4, a second rotating shaft 17 is provided at the connection between the first transmission rod 5 and the second transmission rod 6, a third rotating shaft 18 is provided at the connection between the second transmission rod 6 and the third transmission rod 7, a fourth rotating shaft 19 is provided at the connection between the second transmission rod 6 and the first foot support plate 9, a fifth rotating shaft 20 is provided at the connection between the third transmission rod 7 and the side support frame 4, a sixth rotating shaft 21 is provided at the connection between the third transmission rod 7 and the fourth transmission rod 8, a seventh rotating shaft 22 is provided at the connection between the fourth transmission rod 8 and the first foot support plate 9, An eighth rotating shaft 23 is provided at the connection between the fifth transmission rod 10 and the second transmission rod 6, a ninth rotating shaft 24 is provided at the connection between the fifth transmission rod 10 and the sixth transmission rod 11, a tenth rotating shaft 25 is provided at the connection between the sixth transmission rod 11 and the fixed plate 12, an eleventh rotating shaft 26 is provided at the connection between the sixth transmission rod 11 and the second foot support plate 14, the fixed plate 12 and the first foot support plate 9 are fixedly connected by screws, a twelfth rotating shaft 27 is provided at the connection between the fixed plate 12 and the seventh transmission rod 13, and a thirteenth rotating shaft 28 is provided at the connection between the seventh transmission rod 13 and the second foot support plate 14. On the side support frame 4, the fifth rotating shaft 20 is located in front of the first rotating shaft 16; on the second transmission rod 6, the fourth rotating shaft 19 is located in front of the eighth rotating shaft 23; the first footrest support plate 9 is provided with a first limiting shaft 29 and a recess 30, the first limiting shaft 29 is used to limit the fourth transmission rod 8 to the end position of the upward rotation when the electric seat bracket is in the open state; the recess 30 is used to accommodate the eighth rotating shaft 23 when the electric seat bracket is in the retracted state; the sixth transmission rod 11 is provided with a second limiting shaft 31, the second limiting shaft 31 is used to limit the end position of the downward rotation of the seventh transmission rod 13 when the electric seat bracket is in the open state.

[0036] like Figure 4-Figure 6 As shown, two first connecting plates 32 are provided on the middle support frame 1, and the first motor 2 is provided with a first connecting head 33. The first connecting head 33 is installed between the two first connecting plates 32 and is rotatably connected to the two first connecting plates 32. A fourteenth rotating shaft 34 is provided between the first connecting head 33 and the first connecting plate 32; two second connecting plates 35 are provided in the middle of the first connecting rod 15, and the front end of the first telescopic push rod 3 is installed between the two second connecting plates 35 and is rotatably connected to the two second connecting plates 35. A fifteenth rotating shaft 36 is provided between the front end of the first telescopic push rod 3 and the second connecting plate 35.

[0037] like Figure 4-Figure 6As shown, a second motor 47 is mounted on the central support frame 1, and a second telescopic push rod 48 extending rearward is connected to the power output end of the second motor 47. The adjustment bracket also includes a backrest support plate 38, the middle portion of which is rotatably connected to the rear end of the side support frame 4. A second connecting rod 49 is fixedly connected between the backrest support plates 38 of the two adjustment brackets, and the rear end of the second telescopic push rod 48 is connected to the second connecting rod 49. The second motor 47 and the first telescopic push rod 48 are preferably driven by a traditional worm gear transmission. The backrest support plate 38 is provided with a plurality of backrest mounting holes, through which the backrest support plate 38 can be mounted to support the user's back. A nineteenth rotating shaft 50 is provided at the connection between the backrest support plate 38 and the side support frame 4. Two third connecting pieces 51 are provided on the middle support frame 1. The second motor 47 is provided with a second connecting head 52, which is mounted between the two third connecting pieces 51 and is rotatably connected to them. A twentieth rotating shaft 53 is provided between the second connecting head 52 and the third connecting piece 51. Two fourth connecting pieces 54 are provided at the middle of the second connecting rod 49. The rear end of the second telescopic push rod 48 is mounted between the two fourth connecting pieces 54 and is rotatably connected to them. A twenty-first rotating shaft 55 is provided between the rear end of the second telescopic push rod 48 and the fourth connecting piece 54. The middle support frame 1 includes a first support beam 101 and a second support beam 102. The first connecting piece 32 and the first motor 2 are mounted on the first support beam 101, and the third connecting piece 51 and the second motor 47 are mounted on the second support beam 102.

[0038] like Figure 4-Figure 6 As shown, the electric chair frame includes a chair leg 42, on which a pneumatic lift rod 43 or an electric lift rod is vertically mounted. The central support frame 1 is fixedly mounted on the pneumatic lift rod 43 or the electric lift rod. The pneumatic lift rod 43 or the electric lift rod is provided with a lift rod switch 44, which is externally connected to an adjustment handle. The chair leg can be a multi-claw chair leg, a disc chair leg, or a wheel chair leg.

[0039] like Figure 4-Figure 6 As shown, the side support frame 4 includes an integrally formed horizontal plate 401 and a vertical plate 402. The horizontal plate 401 is provided with a plurality of mounting holes 403 for mounting the seat. Two fixing members 45 are installed side by side on the outer side of the vertical plate 402. The positioning slot 46 is vertically installed on the outer side of the fixing member 45. The positioning slot 46 is used for slidingly inserting the armrest assembly.

[0040] In the second embodiment, the process of opening the electric seat support is as follows: (1) the first motor 2 drives the first telescopic push rod 3 to extend forward, the first telescopic push rod 3 pushes the first connecting rod 15 to move forward, the first connecting rod 15 pushes the third transmission rod 7 to swing forward, the third transmission rod 7 pushes the second transmission rod 6 and the fourth transmission rod 8 to move forward and pull the first transmission rod 5 to swing forward, the second transmission rod 6 and the fourth transmission rod 8 then push the first footrest support plate 9, the fifth transmission rod 10, the sixth transmission rod 11, the fixed plate 12, the seventh transmission rod 13 and the second footrest support plate 14 to unfold forward respectively, thereby realizing the forward opening of the first footrest support plate 9 and the second footrest support plate 14. (2) the second motor 47 drives the second telescopic push rod 48 to retract forward, pulls the lower end of the seat back support plate 38 to move forward, and swings the upper end of the seat back support plate 38 backward, thereby realizing the backward opening of the seat back support plate 38. During this opening process, the first motor 2 and the second motor 47 are controlled separately. The driving of the first motor 2 and the second motor 47 is a linear process. The user can control the first motor 2 and the second motor 47 to stop driving at any time according to personal preference, so that the first footrest support plate 9, the second footrest support plate 14 and the seat back support plate 38 stay at any position during the opening process.

[0041] In the second embodiment, the electric seat support stowage process is as follows: (1) the first motor 2 drives the first telescopic push rod 3 to retract backward, the first telescopic push rod 3 pulls the first connecting rod 15 to move backward, the first connecting rod 15 pulls the third transmission rod 7 to swing backward, the third transmission rod 7 pulls the second transmission rod 6 and the fourth transmission rod 8 to move backward and push the first transmission rod 5 to swing backward, the second transmission rod 6 and the fourth transmission rod 8 then pull the first footrest support plate 9, the fifth transmission rod 10, the sixth transmission rod 11, the fixed plate 12, the seventh transmission rod 13 and the second footrest support plate 14 to stow backward respectively, thereby realizing the stowage of the first footrest support plate 9 and the second footrest support plate 14. (2) the second motor 47 drives the second telescopic push rod 48 to extend backward, pushes the lower end of the seat back support plate 38 to move backward, and swings the upper end of the seat back support plate 38 forward, thereby realizing the stowage of the seat back support plate 38 forward. During this folding process, the first motor 2 and the second motor 47 are controlled separately. The driving of the first motor 2 and the second motor 47 is a linear process. The user can control the first motor 2 to stop driving at any time according to personal preference, so that the first footrest support plate 9, the second footrest support plate 14 and the chair back support plate 38 stay at any position during the folding process.

[0042] The above description is only a preferred embodiment of the present invention. Any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical solution of the present invention are within the scope of the technical solution of the present invention.

Claims

1. An electric chair bracket with double footrests, characterized by: The lifting mechanism comprises a lifting mechanism, a lifting mechanism comprises a lifting mechanism, a lifting mechanism of the lifting mechanism being further lifting than the lifting mechanism, and a lifting mechanism of the lifting mechanism being further lifting than the lifting mechanism. The rear end is rotatably connected to the side support frame, the front end of the third transmission rod is rotatably connected to the rear end of the fourth transmission rod, the front end of the fourth transmission rod is rotatably connected to the middle part of the first foot support plate, the rear end of the fifth transmission rod is rotatably connected to the front end of the second transmission rod, the front end of the fifth transmission rod is rotatably connected to the rear end of the sixth transmission rod, the middle part of the sixth transmission rod is rotatably connected to the middle part of the fixed plate, the front end of the sixth transmission rod is rotatably connected to the rear end of the second foot support plate, the rear end of the fixed plate is fixedly connected to the front end of the first foot support plate, the front end of the fixed plate is rotatably connected to the rear end of the seventh transmission rod, and the front end of the seventh transmission rod is rotatably connected to the front end of the second foot support plate; a first connecting rod is fixedly connected between the third transmission rods of the two adjusting brackets, and the front end of the first telescopic push rod is connected to the first connecting rod; a positioning slot is provided on the outer side of the side support frame.

2. The electric chair bracket with double footrests according to claim 1, characterized in that: The first transmission rod and the side support frame are connected with a first rotating shaft, the first transmission rod and the second transmission rod are connected with a second rotating shaft, the second transmission rod and the third transmission rod are connected with a third rotating shaft, the second transmission rod and the first foot support plate are connected with a fourth rotating shaft, the third transmission rod and the side support frame are connected with a fifth rotating shaft, the third transmission rod and the fourth transmission rod are connected with a sixth rotating shaft, the fourth transmission rod and the first foot support plate are connected with a seventh rotating shaft, the fifth transmission rod and the second transmission rod are connected with an eighth rotating shaft, the fifth transmission rod and the sixth transmission rod are connected with a ninth rotating shaft, the sixth transmission rod and the fixed plate are connected with a tenth rotating shaft, the sixth transmission rod and the second foot support plate are connected with an eleventh rotating shaft, the fixed plate and the first foot support plate are fixedly connected, the fixed plate and the seventh transmission rod are connected with a twelfth rotating shaft, and the seventh transmission rod and the second foot support plate are connected with a thirteenth rotating shaft.

3. The electric chair bracket with double footrests according to claim 2, characterized in that: On the side support frame, the fifth rotating shaft is located in front of the first rotating shaft; on the second transmission rod, the fourth rotating shaft is located in front of the eighth rotating shaft; the first footrest support plate is provided with a first limiting shaft and a recess, and the first limiting shaft is used to limit the end position of the fourth transmission rod to the upward rotation when the electric seat bracket is in the open state; the recess is used to accommodate the eighth rotating shaft when the electric seat bracket is in the retracted state; the sixth transmission rod is provided with a second limiting shaft, and the second limiting shaft is used to limit the end position of the seventh transmission rod to the downward rotation when the electric seat bracket is in the open state.

4. The electric chair bracket with double footrests according to claim 1, characterized in that: Two first connecting plates are provided on the middle support frame, the first motor is provided with a first connecting head, the first connecting head is installed between the two first connecting plates and is rotatably connected to the two first connecting plates, and a fourteenth rotating shaft is provided between the first connecting head and the first connecting plate; two second connecting plates are provided in the middle of the first connecting rod, the front end of the first telescopic push rod is installed between the two second connecting plates and is rotatably connected to the two second connecting plates, and a fifteenth rotating shaft is provided between the front end of the first telescopic push rod and the second connecting plate.

5. The electric chair bracket with double footrests according to claim 1, characterized in that: The adjustment bracket also includes an eighth transmission rod and a backrest support plate. The front end of the eighth transmission rod is rotatably connected to the middle part of the first transmission rod, the rear end of the eighth transmission rod is rotatably connected to the lower end of the backrest support plate, and the middle part of the backrest support plate is rotatably connected to the rear end of the side support frame; a sixteenth rotating shaft is provided at the connection between the eighth transmission rod and the first transmission rod, a seventeenth rotating shaft is provided at the connection between the eighth transmission rod and the backrest support plate, and an eighteenth rotating shaft is provided at the connection between the backrest support plate and the side support frame.

6. The electric chair bracket with double footrests according to claim 4, characterized in that: A second motor is installed on the middle support frame, and the power output end of the second motor is connected to a second telescopic push rod extending backward; the adjustment bracket also includes a backrest support plate, the middle part of the backrest support plate is rotatably connected to the rear end of the side support frame, and a second connecting rod is fixedly connected between the backrest support plates of the two adjustment brackets, and the rear end of the second telescopic push rod is connected to the second connecting rod.

7. The electric chair bracket with double footrests according to claim 6, characterized in that: A nineteenth rotating shaft is provided at the connection between the chair back support plate and the side support frame; two third connecting plates are provided on the middle support frame, the second motor is provided with a second connecting head, the second connecting head is installed between the two third connecting plates and is rotatably connected to the two third connecting plates, and a twentieth rotating shaft is provided between the second connecting head and the third connecting plate; two fourth connecting plates are provided in the middle of the second connecting rod, the rear end of the second telescopic push rod is installed between the two fourth connecting plates and is rotatably connected to the two fourth connecting plates, and a twenty-first rotating shaft is provided between the rear end of the second telescopic push rod and the fourth connecting plate.

8. The electric chair bracket with double footrests according to claim 7, characterized in that: The middle support frame includes a first support beam and a second support beam, the first connecting piece and the first motor are installed on the first support beam, and the third connecting piece and the second motor are installed on the second support beam.

9. The electric chair bracket with double footrests according to claim 1, characterized in that: The electric seat bracket includes a chair foot, on which a pneumatic lift rod or an electric lift rod is vertically installed. The middle support frame is fixedly installed on the pneumatic lift rod or the electric lift rod, and a lift rod switch is provided on the pneumatic lift rod or the electric lift rod.

10. The electric chair bracket with double footrests according to claim 1, characterized in that: The side support frame includes an integrally formed horizontal plate and a vertical plate. The horizontal plate is provided with a plurality of mounting holes for mounting a seat. Two fixing members are installed side by side on the outer side of the vertical plate. The positioning slot is vertically installed on the outer side of the fixing member. The positioning slot is used for slidingly inserting the armrest assembly.

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