Improved wheelchair accessible seat rotary elevator

Abstract

The utility model belongs to the technical field of automobile parts, and discloses an improved welfare seat rotating elevator which comprises a bottom layer sliding rail assembly, a middle plate is installed on the bottom layer sliding rail assembly in a sliding mode, a rotating plate is installed on the top face of the middle plate through a rotating driving mechanism, and the top face of the rotating plate is connected with a first hinge supporting plate through a middle layer driving mechanism. The two ends of the first hinged supporting plate are connected with second hinged supporting plates through lifting driving arms, the second hinged supporting plates are connected with the seat fixing plate through an upper-layer moving mechanism, a rotary anti-backlash mechanism is arranged between the middle plate and the rotary plate and comprises a rotary shaft sleeve and an anti-backlash hook plate, and the rotary shaft sleeve is rotationally installed on the middle plate. A hook plate gap exists between the rotating shaft sleeve and the top face of the middle plate, a gap eliminating hook plate is fixed to the bottom face of the rotating plate, and the bottom end of the gap eliminating hook plate is inserted into the hook plate gap in the rotating reset direction of the seat. According to the utility model, not only is the safety and the functionality better balanced, but also the driving comfort of a user is obviously improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of automobile parts, especially relates to an improved welfare seat rotating lifter. BACKGROUND

[0002] With the aggravation of the population aging trend and the increasing attention of society to barrier-free environment construction, the traditional automobile seat has been unable to meet the special needs of this group of people. Therefore, the welfare seat rotating lifter emerges as the times require, and provides a more convenient and comfortable travel experience for the disabled through technological innovation.

[0003] In order to meet the user's demand, the welfare seat usually needs to have the functions of rotation, lifting, sliding and the like. Therefore, the welfare seat rotating lifter is generally composed of multiple layers of mechanisms, including a fixed layer, an in-vehicle front and rear moving layer, a rotating layer, an in and out of vehicle moving layer and a lifting layer and the like. However, the complexity of these multiple layers of mechanisms greatly increases the difficulty of modal design, resulting in that the lifter is prone to shaking during driving, thereby affecting the comfort of riding. In addition, the structure of the welfare seat rotating lifter is more complex than that of the conventional automobile seat, and there is a great safety hazard in the case of extreme impact, and the safety performance is relatively low, which brings great challenges to the design work. SUMMARY

[0004] In order to overcome the above-mentioned deficiencies, the utility model provides an improved welfare seat rotating lifter, which not only realizes a better balance between safety and functionality, but also significantly improves the driving comfort of the user.

[0005] The main technical scheme adopted in the utility model is as follows:

[0006] An improved welfare seat rotating lifter, comprising a bottom slide rail assembly, a middle plate is slidably installed on the bottom slide rail assembly, a rotating plate is installed on the top surface of the middle plate through a rotating drive mechanism, the rotating plate is driven to rotate by the rotating drive mechanism, a first hinged support plate is connected to the top surface of the rotating plate through a middle layer drive mechanism, the first hinged support plate is driven to move back and forth on the rotating plate by the middle layer drive mechanism, a second hinged support plate is connected to the two ends of the first hinged support plate through a lifting drive arm, the second hinged support plate is driven to move up and down by the lifting drive arm, a seat fixing plate is connected to the second hinged support plate through an upper layer moving mechanism, the seat fixing plate is driven to move up and down by the upper layer moving mechanism, a rotating gap elimination mechanism is arranged between the middle plate and the rotating plate, wherein the rotating gap elimination mechanism comprises a rotating shaft sleeve and a gap elimination hook plate, the rotating shaft sleeve is rotatably installed on the middle plate, and a hook plate gap exists between the rotating shaft sleeve and the top surface of the middle plate, the gap elimination hook plate is fixed to the bottom surface of the rotating plate, and the bottom end of the gap elimination hook plate is inserted into the hook plate gap in the seat rotating reset direction.

[0007] Preferably, the rotation gap eliminating mechanism further comprises a plurality of supporting rollers, which are rollingly mounted on the top surface of the middle plate, and the circumferential surface of the supporting rollers is in rolling contact with the bottom surface of the rotating plate.

[0008] Preferably, an adjustable angle limiting support is further arranged between the middle plate and the rotating plate, which comprises a base plate, a support plate, a rubber block and a stopper, the base plate is adjustably mounted on the top surface of the middle plate, the support plate is vertically arranged on the base plate, the side of the support plate in contact with the stopper is provided with the rubber block, the stopper is arranged on the bottom surface of the rotating plate, and the stopper is in contact and limiting cooperation with the rubber block of the support plate in the direction of rotating out of the seat.

[0009] Preferably, a rear end locking hook is further arranged on the top surface of the middle plate, and the rear end locking hook cooperates with the rear end of the rotating plate after rotation reset, and the side of the rear end locking hook is provided with a buffer block for limiting the rotating plate after rotation reset.

[0010] Preferably, a roller is mounted on the rotating plate through a fixed shaft for rolling contact with the lifting driving arm, one end of the fixed shaft penetrates through the side of the rotating plate and is locked by an end locking member, a spherical gasket is arranged between the end locking member and the side of the rotating plate, and a locking hook is arranged on the lifting driving arm, which cooperates with the end locking member of the fixed shaft in the direction of recycling of the lifting driving arm to self-lock and eliminate gap.

[0011] Preferably, two groups of guide rail groove assemblies are arranged on the first hinged support plate for cooperating with the moving sliding block of the bottom surface of the seat fixing plate, and an adjustable gap eliminating assembly is arranged on the mounting support plate of each group of guide rail groove assemblies, which is located on the side of the moving sliding block.

[0012] Preferably, the adjustable gap eliminating assembly comprises an adjusting shaft sleeve, a gasket and a countersunk screw, the adjusting shaft sleeve is provided with threads inside and outside, the outer threads of the adjusting shaft sleeve are in threaded connection with the through hole on the side of the mounting support plate, and the gasket is locked and mounted on one end of the adjusting shaft sleeve close to the moving sliding block through the countersunk screw.

[0013] Preferably, a reversible roller blind support assembly is further arranged on the rotating plate, which comprises a roller blind support, a roller blind support seat and a torsion spring, the roller blind support seat is mounted on the top front end of the rotating plate, the roller blind support is rotatably mounted on the roller blind support seat, and the torsion spring is sleeved and mounted on the roller blind support to provide reset elastic force for the roller blind support.

[0014] Preferably, the upper layer moving mechanism comprises a translation motor, a screw rod nut, a screw rod and a reinforcing assembly, the translation motor is mounted on the bottom surface of the seat fixing plate, the screw rod is rotatably mounted on the bottom surface of the seat fixing plate, the output end of the translation motor is in driving connection with the screw rod, the screw rod nut is fixed on the second hinged support plate and is fittedly mounted on the screw rod, and the reinforcing assembly is fixedly mounted on the motor housing of the translation motor and the screw rod penetrates through the reinforcing assembly.

[0015] Preferably, the reinforcing assembly comprises a locking nut, a reinforcing plate and a plurality of limiting bolts, the locking nut is lockedly mounted on the screw rod and rotates with the screw rod, the reinforcing plate is fixedly mounted on the motor housing of the translation motor through the plurality of limiting bolts to form an accommodating space, and the screw rod penetrates through the reinforcing plate, and the locking nut is located in the accommodating space.

[0016] Beneficial effects: the improved well-being seat rotating and lifting machine has the following advantages.

[0017] (1) The utility model discloses an improved well-being seat rotating and lifting machine, which has the following advantages.

[0018] (2) The utility model discloses an improved well-being seat rotating and lifting machine, which has the following advantages.

[0019] (2) The utility model discloses an improved well-being seat rotating and lifting machine, which has the following advantages. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the overall structure schematic diagram of this embodiment 1 (seat recycling state, omit seat);

[0021] Figure 2 It is the overall structure schematic diagram of this embodiment 1 (seat spin out state, omit seat);

[0022] Figure 3 It is the overall structure schematic diagram of this embodiment 1 (seat stretches out the car and completes state, omit seat);

[0023] Figure 4 Fig. 1 is a schematic diagram of the top surface structure of the middle plate of the present embodiment 1 (omitting the rotating plate);

[0024] Figure 5 Fig. 2 is a schematic diagram of the position of the blocking piece of the present embodiment 1;

[0025] Figure 6 Fig. 3 is a schematic diagram of the self-locking anti-backlash of the present embodiment 1;

[0026] Figure 7 Fig. 4 is a schematic diagram of the assembly of the rear end lock hook of the present embodiment 1;

[0027] Figure 8 Fig. 5 is a schematic diagram of the installation of the adjustable anti-backlash assembly of the present embodiment 1;

[0028] Figure 9 Fig. 6 is a schematic diagram of the explosion of the adjustable anti-backlash assembly of the present embodiment 1;

[0029] Figure 10 Fig. 7 is a schematic diagram of the structure of the dustproof mechanism of the present embodiment 1;

[0030] Figure 11 Fig. 8 is a schematic diagram of the working state of the dustproof mechanism of the present embodiment 1;

[0031] Figure 12 Fig. 9 is a schematic diagram of the structure of the reversible roller blind support assembly of the present embodiment 1;

[0032] Figure 13 Fig. 10 is a schematic diagram of the turning storage of the reversible roller blind support assembly of the present embodiment 1;

[0033] Figure 14 Fig. 11 is a schematic diagram of the structure of the upper layer moving mechanism of the present embodiment 1;

[0034] Figure 15 Fig. 12 is a schematic diagram of the structure of the reinforcing assembly of the present embodiment 1;

[0035] In the diagram: Bottom slide rail assembly 1, middle plate 2, rear locking hook 2-1, buffer block 2-2, rotary drive mechanism 3, rotating plate 4, rotary backlash elimination mechanism 4-1, rotating bushing 4-11, backlash elimination hook plate 4-12, support roller 4-13, adjustable angle limit bracket 4-2, base plate 4-21, support plate 4-22, rubber block 4-23, baffle 4-24, roller 4-3, fixed shaft 4-4, end locking piece 4-5, spherical washer 4-6, middle layer drive mechanism 5, first hinge support plate 6, guide rail groove assembly 6-1, mounting support plate 6-11, adjustable backlash elimination assembly 6- 2. Adjusting bushing 6-21, gasket 6-22, countersunk screw 6-23, lifting drive arm 7, locking hook 7-1, second hinge plate 8, upper moving mechanism 9, translation motor 9-1, lead screw nut 9-2, lead screw 9-3, reinforcing assembly 9-4, locking nut 9-41, reinforcing plate 9-42, limit bolt 9-43, seat fixing plate 10, moving slider 10-1, dustproof mechanism 11, dustproof roller blind 11-1, roller blind frame 11-2, flip-up roller blind bracket assembly 11-3, roller blind bracket 11-31, roller blind bracket seat 11-32, torsion spring 11-33. Detailed Implementation

[0036] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application are clearly and completely described below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application. Example 1

[0037] like Figures 1-4 As shown, an improved welfare seat rotating lift includes a bottom slide rail assembly 1, a middle plate 2 slidably mounted on the bottom slide rail assembly 1, a rotating plate 4 mounted on the top surface of the middle plate 2, and a rotating drive mechanism 3 driving the rotating plate 4 to rotate. The top surface of the rotating plate 4 is connected to a first hinge plate 6 through a middle drive mechanism 5, which drives the first hinge plate 6 to move back and forth on the rotating plate 4. The two ends of the first hinge plate 6 are connected to second hinge plates 8 through lifting drive arms 7, which drive the second hinge plates 8 to move up and down. The second hinge plates 8 are connected to the rotating plate 4 via... The upper moving mechanism 9 is connected to the seat fixing plate 10. The upper moving mechanism 9 drives the seat fixing plate 10 to move in a telescopic motion. A rotary gap elimination mechanism 4-1 is provided between the middle plate 2 and the rotating plate 4. The rotary gap elimination mechanism 4-1 includes a rotating bushing 4-11 and a gap elimination hook plate 4-12. The rotating bushing 4-11 is rotatably mounted on the middle plate 2, and there is a hook plate gap between the rotating bushing 4-11 and the top surface of the middle plate 2. The gap elimination hook plate 4-12 is fixed on the bottom surface of the rotating plate 4, and the bottom end of the gap elimination hook plate 4-12 is inserted into the hook plate gap along the seat rotation and reset direction.

[0038] In the utility model, as shown in the figure, Figure 1 When it is needed to rotate the welfare seat out of the vehicle, the position of the middle plate 2 on the bottom slide rail assembly 1 can be adjusted first, and then the rotary plate 4 installed on the middle plate is rotated outward by a certain angle (the angle is set according to the size of the door) through the rotary driving mechanism 3, as shown in the figure, Figure 2 Then the upper moving mechanism 9 is controlled to drive the seat fixing plate 10 to extend from above the rotary plate 4 to the front end of the second hinge plate 8. At the same time, the middle driving mechanism 5 is controlled to drive the first hinge plate 6 to move from the rear end of the rotary plate 4 to the front end of the rotary plate 4, so that the second hinge plate 8 is driven to descend by the lifting driving arm 7, and the seat fixing plate 10 installed on the second hinge plate 8 also descends, thereby completing the rotation and extension of the welfare seat, as shown in the figure, Figure 3 When it is needed to reset the welfare seat to the initial position, the middle driving mechanism 5, the upper moving mechanism 9, the rotary driving mechanism 3 and the bottom slide rail assembly 1 are controlled in reverse, and the welfare seat is reset to the initial position.

[0039] In the utility model, the rotary gap elimination mechanism 4-1 can eliminate the installation gap between the middle plate and the rotary plate 3, reduce the vibration and noise generated during the movement of the welfare seat, and embed the gap hook plate 4-12 in the hook plate gap, thereby applying a downward pulling force to the rotary plate 3 in the vertical direction, making the connection between the rotary plate 4 and the middle plate 2 more compact, enhancing the rigidity of the overall structure, and being beneficial to improving the carrying capacity and service life of the system. In addition, when the welfare seat is subjected to rearward collision, the rotary gap elimination mechanism 4-1 can effectively prevent the seat from tilting backward, thereby improving the collision structural strength and safety of the seat.

[0040] Further, in order to ensure the stability of the force of the gap elimination hook plate 4-12 in the hook plate gap, as shown in the figure, Figure 4 A support roller 4-13 can also be provided, which is rollingly installed on the top surface of the middle plate 2, and the circumferential surface of the support roller 4-13 is in rolling contact with the bottom surface of the rotary plate 4, thereby providing an upward supporting force for the rotary plate 4 and ensuring that the gap elimination hook plate 4-12 and the rotary shaft sleeve 4-11 are tightly matched.

[0041] In the embodiment 1, the rotary shaft sleeve 4-11 provides a guiding function when the gap elimination hook plate 4-12 is inserted into the hook plate gap, and the surface of the rotary shaft sleeve 4-11 can be subjected to surface roughness treatment in order to increase the friction.

[0042] Since there is generally a large gap in the rotary driving mechanism 3 (such as between the rotary motor gear and the driving rack), the welfare seat is prone to shaking during rotation, and therefore, in the utility model, as shown in the figure, Figure 2 ,4 As shown in Figure 5, an adjustable angle limiting bracket 4-2 is also provided between the middle plate 2 and the rotating plate 4. The adjustable angle limiting bracket 4-2 includes a base plate 4-21, a support plate 4-22, a rubber block 4-23, and a baffle 4-24. The base plate 4-21 is adjustablely mounted on the top surface of the middle plate 2. The support plate 4-22 is vertically mounted on the base plate 4-21. A rubber block 4-23 is provided on the side of the support plate 4-22 that contacts the baffle 4-24. The baffle 4-24 is located on the bottom surface of the rotating plate 4. The baffle 4-24 contacts and cooperates with the rubber block 4-23 of the support plate 4-222 along the direction of seat rotation to limit the movement.

[0043] When the welfare seat rotates out of the vehicle and stops at a certain angle, the baffle 4-24 on the rotating plate 4 and the rubber block 4-23 on the middle plate 2 come into contact with each other, eliminating the gap in the rotation drive mechanism 3, thereby reducing the amount of swaying when the seat extends out of the vehicle. Furthermore, since different car models have different door opening angles, the welfare seat rotation angle varies. The base plate 4-21 can be adaptively installed according to actual angle requirements. The adjustable installation method can be achieved through the guide adjustment groove on the base plate 4-21 and the bolts used for installation.

[0044] In this embodiment 1, as Figure 6 As shown, a roller 4-3 is mounted on the bottom surface of the rotating plate 4 via a fixed shaft 4-4 for rolling contact with the lifting drive arm 7, providing rolling support. One end of the fixed shaft 4-4 passes through the side of the rotating plate 4 and is locked by an end locking piece 4-5. A spherical washer 4-6 is provided between the end locking piece 4-5 and the side of the rotating plate 4. A locking hook 7-1 is provided on the lifting drive arm 7. The locking hook 7-1 engages with the end locking piece 4-5 of the fixed shaft 4-4 in the retraction direction of the lifting drive arm 7 for self-locking and gap elimination.

[0045] In this invention, during the retraction and resetting process of the welfare seat, driven by the middle-layer drive mechanism 5, the lifting drive arm 7 moves backward relative to the rotating plate 4 along with the first hinge plate 6. The end locking member 4-5 of the fixed shaft 4-4 on the rotating plate 4 engages with the locking hook 7-1 of the lifting drive arm 7, thereby restricting the upward swing of the lifting drive arm 7 relative to the first hinge plate 6, completing self-locking and gap elimination. Figure 2 As shown. The spherical washer 4-6 provided at the end of the fixed shaft 4-4 can guide the end locking member 4-5 as it engages with the locking hook 7-1.

[0046] In this invention, the end locking member 4-5 can be an existing locking member that can achieve fixed shaft locking, such as a nut.

[0047] In this utility model, such as Figure 4 and 7As shown, the top surface of the middle plate 2 is also provided with a rear end hook 2-1, and the rear end hook 2-1 cooperates with the rear end of the rotary plate 4 after rotation reset, and the side of the rear end hook 2-1 is provided with a buffer block 2-2 for limiting the rotary plate 4 after rotation reset. The rear end hook 2-1 cooperates with the rear end of the rotary plate 4, which can assist in bearing the forward impact force during the collision process, thereby enhancing the collision load capacity of the welfare seat.

[0048] In the utility model, as shown in the drawings, Figure 8 As shown, the first hinge support plate 6 is provided with two groups of guide rail groove assemblies 6-1 for cooperating with the moving sliding block 10-1 on the bottom surface of the seat fixing plate 10, and the installation support plate 6-11 of each group of guide rail groove assemblies 6-1 is provided with an adjustable gap elimination assembly 6-2, and the adjustable gap elimination assembly 6-2 is located at the side of the moving sliding block 10-1. This is because when the moving sliding block 10-1 is in the recovery state, as shown in the drawings, Figure 2 As shown, the moving sliding block 10-1 is located in the guide rail groove assembly 6-1, at this time, the moving sliding block 10-1 is easy to vibrate between the guide rails in the guide rail groove assembly 6-1 in the horizontal direction, which affects the riding comfort. Therefore, the adjustable gap elimination assembly 6-2 needs to be arranged in the horizontal direction to eliminate the gap between the guide rail groove assembly 6-1 and the moving sliding block 10-1, and improve the assembly stability of the moving sliding block 10-1.

[0049] As shown in the drawings, Figure 9 As shown in the drawings, the adjustable gap elimination assembly 6-2 in the embodiment 1 includes an adjusting shaft sleeve 6-21, a gasket 6-22 and a countersunk screw 6-23, the adjusting shaft sleeve 6-21 is provided with threads inside and outside, the outer thread of the adjusting shaft sleeve 6-21 is in threaded connection with the side hole of the installation support plate 6-11, and the gasket 6-22 is locked and installed at one end of the adjusting shaft sleeve 6-21 close to the moving sliding block 10-1 through the countersunk screw 6-23. In the utility model, the gasket 6-22 can be adjusted to abut against the side of the moving sliding block 10-1 by rotating the adjusting shaft sleeve 6-21 according to the distance between the installation support plate 6-11 and the moving sliding block 10-1.

[0050] In the utility model, the structure of the adjustable gap elimination assembly can be but is not limited to the above structure.

[0051] In order to improve the appearance of the mechanism and prevent dust and debris from entering the mechanism, a dust mechanism 11 is further arranged in the utility model, for example, Figures 10-11 As shown, the dust mechanism 11 includes a dust roller shutter 11-1 and a roller shutter frame 11-2, the dust roller shutter 11-1 is rotatably installed at the top position of the rear end of the rotary plate 4, the pulling end of the dust roller shutter 11-1 is fixedly installed at the rear end of the seat fixing plate 10, and the roller frame 11-2 is installed on the first hinge support plate 6 for transitional support of the dust roller shutter 11-1. The structure of the dust mechanism 11 in the utility model can be but is not limited to the above structure.

[0052] Because the lifting drive arm 7 has a long stroke to drive the welfare seat downwards, the distance between the roller blind frame 11-2 and the rear end of the seat fixing plate 10 is too long, resulting in insufficient tension of the dustproof roller blind 11-1, which easily sticks to other components. Therefore, in this embodiment 1, a flip-up roller blind bracket assembly 11-3 is also provided on the rotating plate 4 to further support the dustproof roller blind 11-1. Figure 12 As shown, the reversible roller blind bracket assembly 11-3 includes a roller blind bracket 11-31, a roller blind bracket seat 11-32, and a torsion spring 11-33. The roller blind bracket seat 11-32 is mounted on the front end of the top of the rotating plate 4. The roller blind bracket 11-31 is rotatably mounted on the roller blind bracket seat 11-32. The torsion spring 11-33 is sleeved on the roller blind bracket 11-31 to provide a return spring force for the roller blind bracket 11-31.

[0053] In this invention, when the seat fixing plate 10 rises and retracts above the rotating plate 4, the seat fixing plate 10 applies a force to the rear end of the rotating plate 4 on the roller blind bracket 11-31, causing the roller blind bracket 11-31 to drive the torsion spring 11-33 to flip backward and be stored between the seat fixing plate 10 and the rotating plate 4. Figure 13 As shown. When the seat fixing plate 10 extends forward, the backward force applied to the roller blind bracket 11-31 disappears, causing the roller blind bracket 11-31 to return to its original position under the action of the torsion spring 11-33.

[0054] In this utility model, such as Figure 14 As shown, the upper moving mechanism 9 includes a translation motor 9-1, a lead screw nut 9-22, a lead screw 9-3, and a reinforcing assembly 9-4. The translation motor 9-1 is mounted on the bottom surface of the seat fixing plate 10. The lead screw 9-3 is rotatably mounted on the bottom surface of the seat fixing plate 10, and the output end of the translation motor 9-1 is drivenly connected to the lead screw 9-3. The lead screw nut 9-22 is fixed on the second hinge plate 8, and the lead screw nut 9-22 is fitted onto the lead screw 9-3. The reinforcing assembly 9-4 is fixedly mounted on the motor housing of the translation motor 9-1, and the lead screw 9-3 passes through the reinforcing assembly 9-4. In this utility model, the translation motor 9-1 and the lead screw 9-3 are both installed on the bottom surface of the seat fixing plate 10. The translation motor 9-1 drives the lead screw 9-3 to rotate. Since the lead screw nut 9-22 is fixed on the second hinge plate 8, the lead screw nut 9-22 does not move. The translation motor 9-1, the lead screw 9-3 and the seat fixing plate 10 as a whole move back and forth relative to the second hinge plate 8.

[0055] like Figure 15As shown, the reinforcing assembly 9-4 in this embodiment 1 includes a locking nut 9-41, a reinforcing plate 9-42 and a plurality of limiting bolts 9-43, the locking nut 9-41 is locked and installed on the lead screw 9-3 and rotates with the lead screw 9-3, the reinforcing plate 9-42 is fixedly installed on the motor shell of the translation motor 9-1 through the plurality of limiting bolts 9-43 to form a containing space, and the lead screw 9-3 penetrates through the reinforcing plate 9-42, and the locking nut 9-41 is located in the containing space. In the utility model, the locking nut 9-41 and the reinforcing plate 9-42 are additionally installed on one side of the cooperation end of the translation motor 9-1 and the lead screw nut 9-22, wherein the reinforcing plate 9-42 is connected with the motor shell through four limiting bolts 9-43. The structure avoids that the pulling force generated by collision on the lead screw directly acts on the c transmission structure inside the translation motor under the condition of collision, and instead is borne by the locking nut 9-41, the reinforcing plate 9-42 and the motor shell, which is beneficial to prolong the service life of the translation motor and enhance the collision bearing capacity of the translation motor.

[0056] In the utility model, the driving principle and driving structure of the bottom slide rail assembly 1, the rotary driving mechanism 3, the middle layer driving mechanism 5 and the lifting driving arm 7 are prior art, so detailed description is not given.

[0057] The above is only the preferred embodiment of the utility model, and it should be pointed out that for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the principle of the utility model, and these improvements and refinements should also be regarded as the protection range of the utility model.

Claims

1. An improved well-being chair rotary lifter, comprising a bottom slide rail assembly, a middle plate is slidingly mounted on the bottom slide rail assembly, a top surface of the middle plate is mounted with a rotary plate through a rotary drive mechanism, the rotary plate is rotated by the rotary drive mechanism, a top surface of the rotary plate is connected with a first hinged support plate through a middle layer drive mechanism, the first hinged support plate is moved forward and backward on the rotary plate by the middle layer drive mechanism, two ends of the first hinged support plate are connected with a second hinged support plate through a lifting drive arm, the second hinged support plate is lifted and lowered by the lifting drive arm, and the second hinged support plate is connected with a seat fixing plate through an upper layer moving mechanism, the seat fixing plate is extended and retracted by the upper layer moving mechanism, characterized in that, A rotating gap elimination mechanism is arranged between the middle plate and the rotating plate, wherein the rotating gap elimination mechanism comprises a rotating shaft sleeve and a gap elimination hook plate, the rotating shaft sleeve is rotatably installed on the middle plate, and a hook plate gap exists between the rotating shaft sleeve and the top surface of the middle plate, the gap elimination hook plate is fixed on the bottom surface of the rotating plate, and the bottom end of the gap elimination hook plate is inserted into the hook plate gap in the seat rotating reset direction.

2. The improved well-being seating swivel lift of claim 1, wherein, The rotating gap elimination mechanism further comprises a plurality of supporting rollers, which are rollingly installed on the top surface of the middle plate, and the circumferential surface of the supporting roller is in rolling contact with the bottom surface of the rotating plate.

3. The improved well-being seating swivel lift of claim 1, wherein, An adjustable angle limiting support is further arranged between the middle plate and the rotating plate, which comprises a base plate, a support plate, a rubber block and a stopper, the base plate is adjustably installed on the top surface of the middle plate, the support plate is vertically arranged on the base plate, the side of the support plate in contact with the stopper is provided with a rubber block, the stopper is arranged on the bottom surface of the rotating plate, and the stopper is in contact with the rubber block of the support plate in the seat rotating direction to limit the rotating plate.

4. The improved well-being seating swivel lift of claim 1, wherein, A rear end lock hook is further arranged on the top surface of the middle plate, and the rear end lock hook cooperates with the rear end of the rotating plate after rotating reset, and the side of the rear end lock hook is provided with a buffer block for limiting the rotating plate after rotating reset.

5. The improved well-being seating swivel lift of claim 1, wherein, A roller is installed on the rotating plate through a fixed shaft for rolling contact with the lifting driving arm, one end of the fixed shaft is locked by an end locking member through the side of the rotating plate, a spherical gasket is arranged between the end locking member and the side of the rotating plate, a lock hook is arranged on the lifting driving arm, and the lock hook cooperates with the end locking member of the fixed shaft in the recovery direction of the lifting driving arm to self-lock and eliminate the gap.

6. The improved well-being seating swivel lift of claim 1, wherein, Two groups of guide rail groove assemblies are arranged on the first hinge support plate for cooperating with the moving sliding block on the bottom surface of the seat fixing plate, an adjustable gap elimination assembly is arranged on the installation support plate of each guide rail groove assembly, and the adjustable gap elimination assembly is located on the side of the moving sliding block.

7. The improved well-being seating swivel lift of claim 6, wherein, The adjustable gap elimination assembly comprises an adjusting shaft sleeve, a gasket and a countersunk screw, the adjusting shaft sleeve is provided with threads inside and outside, the outer thread of the adjusting shaft sleeve is threadedly connected with the through hole on the side of the installation support plate, and the gasket is locked and installed on one end of the adjusting shaft sleeve close to the moving sliding block through the countersunk screw.

8. The improved well-being seating swivel lift of claim 1, wherein, A reversible roller blind support assembly is further arranged on the rotating plate, which comprises a roller blind support, a roller blind support seat and a torsion spring, the roller blind support seat is installed on the top front end of the rotating plate, the roller blind support is rotatably installed on the roller blind support seat, and the torsion spring is sleeved and installed on the roller blind support to provide a reset elastic force for the roller blind support.

9. The improved well-being seating swivel lift of claim 1, wherein, The upper layer moving mechanism comprises a translation motor, a screw nut, a screw rod and a reinforcing assembly, the translation motor is installed on the bottom surface of the seat fixing plate, the screw rod is rotatably installed on the bottom surface of the seat fixing plate, the output end of the translation motor is drivingly connected with the screw rod, the screw nut is fixed on the second hinge support plate, the screw nut is cooperatively installed on the screw rod, and the reinforcing assembly is fixedly installed on the motor housing of the translation motor, and the screw rod penetrates through the reinforcing assembly.

10. The improved well-being seating swivel lift of claim 9, wherein, The reinforcing assembly comprises a locking nut, a reinforcing plate and a plurality of limiting bolts, the locking nut is locked and installed on the lead screw and rotates with the lead screw, the reinforcing plate is fixedly installed on the motor shell of the translation motor through the plurality of limiting bolts to form an accommodating space, and the lead screw penetrates through the reinforcing plate, and the locking nut is located in the accommodating space.

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