A wheel lift structure for a well-being seat

Abstract

The utility model discloses a wheel lifting structure for welfare seat belongs to the technical field of seat supporting device, including lifting wheel assembly installation support, lifting wheel assembly installation support one side is hinged respectively with rotary hinge, upper support arm and lower support arm, upper support arm and lower support arm are away from lifting wheel assembly installation support one end hinged with wheel installation support, the utility model can adapt to the height demand of multiple scenes, through electric support rod drive lower support arm rotation, linkage upper support arm, connecting arm member etc. realize wheel height adjustment, thereby can adapt to the different height difference of the person who rides from ground, wheelchair or vehicle seat to welfare seat shift, in this way avoid the body inclination in the shift process, support unstable, reduce physical consumption and safety risk, connecting arm will rotary hinge and upper support arm articulate simultaneously, form the link chain of coherent force transmission, can ensure that upper support arm and lower support arm action is synchronous when electric support rod drive, avoid disjointedness.

Description

Technical Field

[0001] This utility model relates to the technical field of seat accessories, specifically a wheel lifting structure for welfare seats. Background Technology

[0002] As a specialized device serving the elderly, disabled and other people with limited mobility, the core function of welfare seats must balance the ease of getting in and out of the seat with the flexibility of seat movement, and the design of the wheel structure directly affects the practicality and safety of the device.

[0003] Most existing welfare seats have wheels with a fixed height structure, which cannot be adjusted according to actual needs. When a passenger transfers from the ground, a wheelchair, or a vehicle seat to a welfare seat, the fixed height wheels are difficult to adapt to the height difference in different scenarios, which can easily lead to problems such as body tilting and unstable support during the transfer, increasing the passenger's physical exertion and safety risks.

[0004] However, some welfare seats with lifting functions often have defects such as insufficient linkage coordination and poor force transmission in their wheel lifting structures. During the lifting process, the upper and lower support arms are prone to disengagement, and the wheels may deviate and wobble. At the same time, the existing structure has weak load-bearing stability, and the load on a single hinge point is too large. After long-term use, the components are prone to deformation and damage, which not only affects the lifting accuracy, but may also cause the seat to tip over when moving or lifting. It cannot meet the dual requirements of height adjustment and stable movement at the same time. Therefore, a wheel lifting structure for welfare seats is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a wheel lifting structure for welfare seats to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a wheel lifting structure for a welfare seat, comprising a lifting wheel assembly mounting bracket, wherein a rotating hinge, an upper support arm and a lower support arm are respectively hinged to one side of the lifting wheel assembly mounting bracket, and a wheel mounting bracket is hinged to the end of the upper support arm and the lower support arm away from the lifting wheel assembly mounting bracket.

[0007] As a further preferred embodiment of this technical solution: the wheels are installed on the welfare seat through the lifting wheel assembly mounting bracket and the entire device is installed on the welfare seat. The core connection and support frame is built by the rotating hinge. At the same time, the wheel mounting bracket is used for core support and installation adaptation.

[0008] As a further preferred embodiment of this technical solution: a connecting arm is installed at the end of the rotary hinge away from the lifting wheel assembly mounting bracket, and a linkage link is constructed through the connecting arm to ensure coordinated action.

[0009] As a further preferred embodiment of this technical solution: the end of the connecting arm away from the rotating hinge is hinged to the end of the upper arm away from the lifting wheel assembly mounting bracket, thereby optimizing the transmission of force and the coordination of linkage.

[0010] As a further preferred embodiment of this technical solution: an electric strut is installed on one side of the rotary hinge, and the piston rod of the electric strut is hinged to the lower support arm, so that the height can be adjusted by driving the wheel through the electric strut.

[0011] As a further preferred embodiment of this technical solution: the lifting wheel assembly mounting bracket is hinged to a reinforcing link on the side adjacent to the wheel mounting bracket, and the reinforcing link is located on the side of the lower support arm, thereby improving the overall operational strength of the device.

[0012] As a further preferred embodiment of this technical solution: a wheel is installed on the end of the wheel mounting bracket away from the upper support arm, and the seat is moved by the wheel.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model can adapt to the height requirements of multiple scenarios. By driving the lower support arm to rotate through the electric support rod, the upper support arm and connecting support arm and other components are linked to realize the wheel height adjustment. This can adapt to the different height differences when the passenger is transferred from the ground, wheelchair or vehicle seat to the welfare seat, thereby avoiding body tilting and unstable support during the transfer process, reducing physical exertion and safety risks.

[0015] 2. This utility model can effectively improve the coordination of lifting linkage. The connecting arm hinges the rotating hinge to the upper arm to form a continuous force transmission link. When the electric strut is driven, it can ensure that the upper arm and the lower arm move synchronously and avoid disengagement. With the coordinated movement between the components, it can prevent the wheels from deviating and swaying when lifting and lowering, and ensure that the lifting trajectory is accurate and stable.

[0016] 3. This utility model effectively enhances load-bearing capacity and structural stability, strengthens the connecting rod and each support arm to form a stable structural prototype with multiple support points, effectively disperses the weight of the seat and the passenger, reduces the stress load on a single hinge point, reduces the risk of deformation and damage to components after long-term use, and avoids the risk of the seat tipping over when it is raised, lowered or moved.

[0017] 4. In this utility model, the electric support rod can precisely control the lifting range and speed. During the lifting process, the wheels are always in contact with the ground, which not only ensures the safety of the seat when lifting, but also does not affect the seat's mobility after lifting, thus achieving the dual requirements of height adjustment and stable movement. Attached Figure Description

[0018] Figure 1 This is a first structural schematic diagram of a wheel lifting structure for a welfare seat according to the present invention;

[0019] Figure 2 This is a schematic diagram of the second structure of a wheel lifting structure for a welfare seat according to the present invention;

[0020] Figure 3 This is a third structural schematic diagram of a wheel lifting structure for a welfare seat according to the present invention.

[0021] In the diagram: 1. Lifting wheel assembly mounting bracket; 2. Rotary hinge; 3. Upper support arm; 4. Lower support arm; 5. Wheel mounting bracket; 6. Electric strut; 7. Connecting support arm; 8. Reinforcing link; 9. Wheel. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0023] Example

[0024] Please see Figures 1-3 This utility model provides a technical solution: a wheel lifting structure for welfare seats, including a lifting wheel assembly mounting bracket 1, a rotating hinge 2, an upper support arm 3 and a lower support arm 4 respectively hinged on one side of the lifting wheel assembly mounting bracket 1, and a wheel mounting bracket 5 hinged to the end of the upper support arm 3 and the lower support arm 4 away from the lifting wheel assembly mounting bracket 1.

[0025] In this embodiment, specifically: the lifting wheel assembly mounting bracket 1 is used to install the wheels 9 through each component, and to install the entire device onto the welfare seat. The rotating hinge 2 is used to build the core connection and support frame, bear and transmit power and force, and guide the movement trajectory of each component. At the same time, the wheel mounting bracket 5 is used for core bearing and installation adaptation, linkage hub and force transmission, and to ensure the stability of lifting and movement.

[0026] In this embodiment, specifically: the upper support arm 3 is used for core linkage and power transmission, support and force distribution, as well as trajectory constraint and stability assurance, while the lower support arm 4 is used for power reception and driving the core, bottom support and structural stability, as well as trajectory guidance and contact assurance.

[0027] In this embodiment, specifically: a connecting arm 7 is installed at the end of the rotating hinge 2 away from the lifting wheel assembly mounting bracket 1. The rotating hinge 2, the upper arm 3 and related components are connected in series by the connecting arm 7 to form a continuous linkage structure, thereby constructing a linkage link to ensure coordinated action.

[0028] In this embodiment, specifically: the end of the connecting arm 7 away from the rotating hinge 2 is hinged to the end of the upper arm 3 away from the lifting wheel assembly mounting bracket 1. The above setting can optimize the force transmission and linkage coordination, so that the connecting arm 7, the upper arm 3, and the rotating hinge 2 form a continuous force transmission link. When the electric strut 6 is driven, the upper arm 3 can receive the constraint and linkage force from the rotating hinge 2 through the hinge point with the connecting arm 7, so as to avoid the upper arm 3 and the lower arm 4 from being out of sync and ensure that the two always maintain coordination and synchronization during the lifting process, thereby improving the stability of the structure operation.

[0029] Furthermore, by using the above-mentioned configuration to enhance structural stability and load-bearing capacity, the upper support arm 3 no longer relies solely on a single-point hinge with the lifting wheel assembly mounting bracket 1, but instead forms a triangular stable structure prototype with multiple support points. This structure can effectively distribute the weight borne by the wheel 9 and the seat, reduce the stress load on a single hinge point, reduce the risk of component deformation or damage, and improve the overall load-bearing stability of the device.

[0030] The above-mentioned setup can effectively ensure the accuracy of the lifting trajectory. During the lifting process, the connecting arm 7 can indirectly constrain the rotation trajectory of the lower arm 4. In conjunction with the linkage of the upper arm 3, it ensures that the wheel mounting bracket 5 and the wheel 9 always lift smoothly along the preset trajectory, avoiding deviation, shaking, etc., thereby ensuring the safety and reliability of the seat lifting.

[0031] In this embodiment, specifically: an electric strut 6 is installed on one side of the rotating hinge 2, and the piston rod of the electric strut 6 is hinged to the lower support arm 4. The height adjustment is achieved by driving the wheel 9 through the electric strut 6.

[0032] In this embodiment, specifically: the electric strut 6 provides power for the rotation of the lower support arm 4 through the extension and retraction of its own piston rod, thereby driving the upper support arm 3, connecting support arm 7 and other components to move together, and finally realize the lifting and lowering action of the wheel mounting bracket 5 and the wheel 9.

[0033] Furthermore, during the lifting process, the electric support rod 6 can precisely control the lifting amplitude and speed. Together with the various rods of the device, it ensures that the wheels 9 remain in contact with the ground during height adjustment, preventing the seat from tipping over during lifting and ensuring that the seat can still move after lifting.

[0034] In this embodiment, specifically: the lifting wheel assembly mounting bracket 1 and the wheel mounting bracket 5 are hinged to a reinforcing link 8 on the adjacent side, and the reinforcing link 8 is located on the side of the lower support arm 4. The reinforcing link 8 improves the overall operating strength of the device.

[0035] In this embodiment, specifically: a wheel 9 is installed on the end of the wheel mounting bracket 5 away from the upper support arm 3. The wheel 9 is used to realize the movement of the seat, ensure the stability of its movement, and adapt to the lifting function.

[0036] In this embodiment, specifically: the wheel 9 adjusts its height with the electric support rod 6, always maintaining contact with the ground, ensuring that the seat will not tip over during the lifting process, and at the same time maintaining its mobility after lifting, thus meeting the height requirements of passengers when getting on and off the seat, without affecting subsequent movement and use.

[0037] Working principle: The electric strut 6 applies a pushing or pulling force to the lower support arm 4 through the extension and retraction of the piston rod, driving the lower support arm 4 to rotate around the hinge point with the lifting wheel assembly mounting bracket 1 as the axis. When the lower support arm 4 rotates, it drives the wheel mounting bracket 5, which is hinged to it, to move synchronously. At the same time, the wheel mounting bracket 5 pulls the upper support arm 3. The upper support arm 3 is linked with the rotating hinge 2 through the connecting support arm 7, so that the rotating hinge 2 adjusts its posture with the movement of the components, ensuring that the upper support arm 3 and the lower support arm 4 move in a coordinated and synchronous manner.

[0038] The wheel mounting bracket 5 rises and falls along a preset trajectory under the drive of the upper and lower support arms, thereby realizing the height adjustment of the end wheel 9. During the lifting and lowering process, the wheel 9 always keeps in contact with the ground, strengthens the connecting rod 8 to distribute the structural force, and, together with the triangular stable structure formed by multiple components, reduces the load on the hinge point, avoids component deformation, and ensures the structural stability during lifting and movement.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wheel lifting structure for a welfare seat, comprising a lifting wheel assembly mounting bracket (1), characterized in that: The lifting wheel assembly mounting bracket (1) is hinged to a rotating hinge (2), an upper support arm (3) and a lower support arm (4) on one side respectively. The upper support arm (3) and the lower support arm (4) are hinged to a wheel mounting bracket (5) at the end away from the lifting wheel assembly mounting bracket (1).

2. The wheel lifting structure for a welfare seat according to claim 1, characterized in that: The rotating hinge (2) is connected to a connecting arm (7) at the end away from the lifting wheel assembly mounting bracket (1).

3. The wheel lifting structure for a welfare seat according to claim 2, characterized in that: The end of the connecting arm (7) away from the rotating hinge (2) is hinged to the end of the upper arm (3) away from the lifting wheel assembly mounting bracket (1).

4. The wheel lifting structure for a welfare seat according to claim 1, characterized in that: An electric strut (6) is installed on one side of the rotating hinge (2), and the piston rod of the electric strut (6) is hinged to the lower support arm (4).

5. The wheel lifting structure for a welfare seat according to claim 1, characterized in that: The lifting wheel assembly mounting bracket (1) is hinged to the wheel mounting bracket (5) on the adjacent side with a reinforcing link (8), and the reinforcing link (8) is located on the side of the lower support arm (4).

6. The wheel lifting structure for a welfare seat according to claim 1, characterized in that: The wheel mounting bracket (5) has a wheel (9) mounted on the end away from the upper support arm (3).

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