Elevator handrail structure

Abstract

The application discloses a lifting handrail structure, comprising: a base; a lifting mechanism assembly fixedly connected with the base; a handrail panel and a first support, one end of the first support being connected with the handrail panel and the other end being connected with the lifting mechanism assembly, the handrail panel being arranged on the top of the lifting mechanism assembly; wherein the lifting mechanism assembly drives the first support to move in the vertical direction, so that the handrail panel is lifted or lowered relative to the base through the movement of the first support, so as to realize the height adjustment of the lifting handrail structure.

Description

Technical Field

[0001] This application relates to the field of handrail technology, and more specifically to a lifting handrail structure. Background Technology

[0002] Adjustable armrests, as a common human body support structure, are widely used in many fields such as office chairs, wheelchairs, medical rehabilitation equipment, and industrial control consoles. One of their core functions is to provide height adjustment capabilities to adapt to different users' body sizes or usage postures, thereby improving comfort and usability.

[0003] Among these technologies, lifting handrails typically employ a motor-driven transmission mechanism for raising and lowering. However, traditional designs often have room for optimization in their overall structural layout, resulting in a circuitous transmission path that leads to low force transmission efficiency, relatively high mechanical losses, and slow dynamic response. Furthermore, the less compact layout of the drive components and support structure can result in a high center of gravity, making the product prone to swaying during lifting or under lateral loads, affecting stability. When the handrail is subjected to a large external force during lifting or while stationary, such as a sudden downward pressure or sideways leaning by a user, the traditional transmission design may cause a conflict between the driving force and the external force, easily leading to motor stall. Utility Model Content

[0004] The purpose of this application is to provide a lifting handrail structure to improve the operational stability of the lifting handrail.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: a lifting handrail structure is provided, comprising: a base; a lifting mechanism assembly, the lifting mechanism assembly being fixedly connected to the base; a handrail panel and a first bracket, one end of the first bracket being connected to the handrail panel and the other end being connected to the lifting mechanism assembly, the handrail panel being placed on top of the lifting mechanism assembly; wherein, the lifting mechanism assembly drives the first bracket to move vertically, thereby causing the handrail panel to rise or fall relative to the base through the movement of the first bracket, so as to realize the adjustment of the height of the lifting handrail structure.

[0006] As a preferred embodiment, the lifting mechanism assembly includes a motor, a lead screw, a lead screw slider, a slide rail, and a second bracket. The lead screw is driven and connected to the output shaft of the motor, and the lead screw slider is threadedly engaged with the lead screw. The second bracket is fixedly connected to the base and extends vertically. The slide rail is connected to the second bracket and extends in the same direction as the second bracket. One end of the lead screw slider is movably connected to the slide rail, and the other end is connected to the first bracket. The movement of the lead screw slider relative to the lead screw and the slide rail drives the first bracket and the handrail panel to rise and fall.

[0007] As another preferred embodiment, the second bracket, the lead screw slider, and the first bracket are arranged in parallel in sequence on the upper part of the base along the driving direction of the lifting mechanism assembly, so that the moving trajectory of the first bracket is parallel to the running trajectory of the lead screw and the lead screw slider in space and do not interfere with each other.

[0008] Further preferably, the base also includes a base panel; the second bracket and the motor are both fixedly connected to the base panel and respectively disposed on both sides of the base panel; wherein, the motor is disposed below the base panel in a suspended or contained manner, so that the installation position of the motor is recessed relative to the second bracket.

[0009] Preferably, the lead screw slider is engaged with the end of the first bracket by a circumferential limiting structure; the circumferential limiting structure constrains the lead screw slider to prevent the lead screw slider from rotating relative to the first bracket.

[0010] Preferably, the circumferential limiting structure includes a plurality of raised rib panels that fit against the lead screw slider, and the plurality of raised rib panels have a chamfer on the side facing the lead screw slider.

[0011] In a further preferred embodiment, the lifting handrail structure also includes a stabilizing bracket, one end of which is fixedly connected to the second bracket, and the other end of which is fixedly connected to the base; the stabilizing bracket forms a stable support structure between the second bracket and the base.

[0012] In a further preferred embodiment, the lifting handrail structure also includes a side plate assembly, one end of which is connected to the handrail panel and the other end of which is connected to the first bracket; the lifting mechanism assembly and the first bracket are enclosed inside the side plate assembly.

[0013] Further preferably, the lifting handrail structure also includes a third bracket, one end of which is connected to the handrail panel, and the other end is fixedly connected to the inner wall of the side panel assembly; the third bracket and the first bracket are respectively located on opposite sides of the lifting mechanism assembly, and the third bracket and the first bracket work together to form double-sided support for the handrail panel.

[0014] Preferably, the lifting handrail structure further includes an upper cover plate covering assembly, and the surface of the handrail panel includes a snap-fit ​​portion and a mounting portion. The snap-fit ​​portion is used to be detachably connected to the upper cover plate covering assembly, and the mounting portion is used to be connected to the first bracket and the third bracket; wherein the snap-fit ​​portion and the mounting portion are arranged at different heights on the surface of the handrail panel.

[0015] Compared with the prior art, the beneficial effects of this application are as follows: When the lifting mechanism assembly is activated, it drives the first support to move linearly in the vertical direction, thereby smoothly raising or lowering the fixed handrail panel synchronously. This allows for flexible adjustment of the handrail height. The first support directly connects the lifting mechanism and the handrail panel, forming a simple and efficient force transmission path that is direct, responsive, and has low mechanical loss. Furthermore, the overall structure is compact, concentrating the drive components near the base, lowering the overall center of gravity, and improving the stability and anti-sway capability of the handrail during lifting. Attached Figure Description

[0016] Figure 1 This is a structural diagram of a lifting handrail.

[0017] Figure 2 This is a partial exploded structural diagram of the lifting handrail structure.

[0018] Figure 3 This is a side sectional view of the lifting handrail structure.

[0019] Figure 4 This is a schematic diagram of the internal components of the side panel assembly in the lifting handrail structure.

[0020] Figure 5 This is another structural diagram of the internal components of the side panel assembly in the lifting handrail structure.

[0021] Figure 6 This is a structural diagram showing the location of the lifting mechanism assembly.

[0022] Figure 7 This is a structural assembly drawing of the first support and the lead screw slider.

[0023] Figure 8 This is a schematic diagram of the structure of the first support and the lead screw slider.

[0024] Figure 9 This is a schematic diagram of the second support structure.

[0025] In the diagram: 1. Lifting handrail structure; 10. Base; 11. Base panel; 20. Lifting mechanism assembly; 21. Motor; 22. Lead screw; 23. Lead screw slider; 24. Slide rail; 25. Second bracket; 30. Handrail panel; 31. Snap-fit ​​part; 32. Mounting part; 40. First bracket; 41. Rib panel; 42. Chamfer; 50. Stabilizing bracket; 60. Side plate assembly; 61. First side plate; 62. Second side plate; 63. Positioning component; 70. Third bracket; 80. Top cover plate covering assembly. Detailed Implementation

[0026] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0027] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this application.

[0028] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0029] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0030] In a preferred embodiment, see Figures 1 to 9This application provides a lifting handrail structure 1, including: a base 10; a lifting mechanism assembly 20, which is fixedly connected to the base 10; a handrail panel 30 and a first support 40, one end of the first support 40 being connected to the handrail panel 30 and the other end being connected to the lifting mechanism assembly 20, with the handrail panel 30 positioned on top of the lifting mechanism assembly 20; wherein, the lifting mechanism assembly 20 drives the first support 40 to move vertically, thereby causing the handrail panel 30 to rise or fall relative to the base 10 through the movement of the first support 40, so as to realize the height adjustment of the lifting handrail structure 1.

[0031] In operation, the lifting mechanism assembly 20 activates, driving the first support 40 to move vertically in a straight line. This smoothly raises or lowers the fixed handrail panel 30, allowing for flexible height adjustment. The first support 40 directly connects the lifting mechanism and the handrail panel 30, forming a simple and efficient force transmission path with direct transmission, rapid response, and low mechanical loss. Secondly, the overall structure is compact, concentrating the drive components near the base 10, lowering the overall center of gravity and improving the stability and anti-sway capability of the handrail during lifting. Finally, this design enables stepless or multi-level height adjustment, adapting to the personalized needs of different users or usage scenarios, significantly improving the product's comfort, applicability, and user experience.

[0032] See Figure 1 and Figure 2 The lifting handrail structure 1 also includes a side plate assembly 60, one end of which is connected to the handrail panel 30 and the other end is connected to the first bracket 40. The lifting mechanism assembly 20 and the first bracket 40 are enclosed within the side plate assembly 60. Specifically, the side plate assembly 60 includes a first side plate 61 and a second side plate 62. The first side plate 61 and the second side plate 62 are positioned and connected by a positioning member 63 provided at the top. The positioning member 63 is preferably a snap-fit ​​structure that works with bolts and nuts, which can realize the assembly or disassembly of the first side plate 61 and the second side plate 62, facilitating internal maintenance such as the lifting mechanism assembly 20. Furthermore, a snap-fit ​​structure is also provided at the lower position between the first side plate 61 and the second side plate 62, which can improve the overall connection strength between the first side plate 61 and the second side plate 62 and prevent the side plate assembly 60 from rotating as a whole.

[0033] Similarly, the top of the side panel assembly 60 is provided with bolts, nuts and other connecting parts for positioning and connection with the handrail panel 30.

[0034] As a preferred option, see Figures 2 to 4 and Figure 6The lifting mechanism assembly 20 includes a motor 21, a lead screw 22, a lead screw slider 23, a slide rail 24, and a second bracket 25. The lead screw 22 is driven and connected to the output shaft of the motor 21, and the lead screw slider 23 is threadedly engaged with the lead screw 22. The second bracket 25 is fixedly connected to the base 10 and extends vertically. The slide rail 24 is connected to the second bracket 25, and the extension direction of the slide rail 24 is consistent with that of the second bracket 25. One end of the lead screw slider 23 is movably connected to the slide rail 24, and the other end is connected to the first bracket 40. The first bracket 40, the side panel assembly 60, and the handrail panel 30 are lifted and lowered by the movement of the lead screw slider 23 relative to the lead screw 22 and the slide rail 24.

[0035] The output shaft of the motor 21 is driven by the lead screw 22 to provide rotational power. The lead screw slider 23 engages with the lead screw 22 via a threaded connection, converting the rotational motion of the lead screw 22 into its own linear motion. The second bracket 25 is fixedly connected to the base 10 and extends vertically, providing the main support structure for the entire lifting motion. The slide rail 24 is firmly connected to the second bracket 25, and its extension direction is consistent with that of the second bracket 25, i.e., it is set in the vertical direction. One end of the lead screw slider 23 is slidably connected to the slide rail 24, and the other end is connected to the first bracket 40.

[0036] During operation, when the motor 21 starts, it drives the lead screw 22 to rotate, which in turn drives the lead screw slider 23, which is threaded to it, to move precisely vertically along the guide rail 24. The linear motion of the lead screw slider 23 is then transmitted to the handrail panel 30 through the first bracket 40, ultimately enabling the handrail panel 30 to rise or fall smoothly.

[0037] Therefore, through the dual action of the lead screw 22 transmission and the guide rail 24, the handrail panel 30 is ensured to move along a strict vertical trajectory during the lifting and lowering process, effectively preventing lateral swaying and deviation, and ensuring smooth and reliable movement. The rigid guide support structure formed by the guide rail 24 and the second bracket 25 can effectively withstand the lateral force and torque from the handrail panel 30, greatly reducing the radial load borne by the lead screw 22 pair, thereby protecting the transmission accuracy of the lead screw 22 and extending the service life of the entire mechanism. At the same time, in this application, the main load-bearing and guiding functions of the handrail panel 30 during the lifting and lowering process are distributed to the high-rigidity mechanical structure, such as the lead screw 22, the guide rail 24, and the second bracket 25. The motor 21 mainly provides rotational torque. When the handrail is subjected to unexpected large downward pressure, this force is directly borne by the thread of the lead screw 22 and the guide rail 24 through the first bracket 40 and the lead screw slider 23, and will not be converted into a huge reverse torque that hinders the rotation of the motor 21. This significantly reduces the risk of motor 21 stalling under stress and improves the reliability of the product under complex working conditions.

[0038] As another preferred option, see Figure 3 and Figure 4 The second bracket 25, the lead screw slider 23 and the first bracket 40 are arranged in parallel along the driving direction of the lifting mechanism assembly 20 on the upper part of the base 10, so that the moving trajectory of the first bracket 40 and the running trajectory of the lead screw 22 and the lead screw slider 23 are parallel to each other in space and do not interfere with each other, effectively avoiding problems such as jamming, shaking or abnormal noise, and bringing a higher quality user experience.

[0039] Further, see Figure 9 The cross-section of the second support 25 is a double X-shaped structure, which is formed by multiple continuous V-shaped grooves or ribs arranged regularly on the wall of the support. This forms two intersecting, X-shaped reinforcing rib networks on the cross-section, which significantly improves the moment of inertia and bending modulus of the second support 25 while maintaining the same material thickness and lightweight characteristics. This provides reliable overall support for the lifting handrail structure 1 and ensures the smoothness and precision of the lifting movement of the screw slider 23.

[0040] In a further preferred embodiment, the base 10 also includes a base panel 11; the second bracket 25 and the motor 21 are both fixedly connected to the base panel 11 and are respectively disposed on both sides of the base panel 11; wherein, the motor 21 is disposed below the base panel 11 in a suspended or contained manner, so that the installation position of the motor 21 is recessed relative to the second bracket 25.

[0041] By arranging the motor 21 below the base panel 11, the unused space below the base 10 is fully utilized, making the entire lifting mechanism more compact in the height direction. This avoids the motor 21 occupying extra space on the side or top, which is conducive to the miniaturization and integration of the lifting handrail structure 1. At the same time, as an important heavy component in the system, the recessed installation of the motor 21 can significantly lower the center of gravity of the entire handrail structure, thereby effectively improving the product's anti-tipping and anti-shaking ability during lifting and static load-bearing, ensuring stability and safety during use.

[0042] Preferred, see Figure 7 and Figure 8 The lead screw slider 23 is engaged with the end of the first bracket 40 through a circumferential limiting structure; the circumferential limiting structure constrains the lead screw slider 23 to prevent the lead screw slider 23 from rotating relative to the first bracket 40.

[0043] Specifically, the circumferential limiting structure includes multiple rib panels 41 that fit against the lead screw slider 23, and the multiple rib panels 41 have a chamfer 42 on the side facing the lead screw slider 23.

[0044] Among them, the rib panel 41 surrounds and contacts the lead screw slider 23 from multiple directions to form a reliable limiting interface. In order to facilitate assembly and optimize force, the edges of the multiple rib panels 41 facing the lead screw slider 23 are all processed with chamfer 42 structure. The chamfer 42 plays a guiding and positioning role when the first bracket 40 and the lead screw slider 23 are assembled together.

[0045] The lifting handrail structure 1 also includes a stabilizing bracket 50, one end of which is fixedly connected to the second bracket 25 and the other end of which is fixedly connected to the base 10; the stabilizing bracket 50 forms a stable support structure between the second bracket 25 and the base 10.

[0046] Preferably, the stabilizing bracket 50 is a triangular bracket structure. Thus, the stabilizing bracket 50 forms an oblique or triangular stable support structure between the second bracket 25 and the stable base 10, so as to further improve the connection stability between the second bracket 25 and the base 10, thereby further ensuring the stability of the handrail panel 30 during the lifting process.

[0047] In a further preferred embodiment, the lifting handrail structure 1 also includes a third support 70. The third support 70, the second support 25, the first support 40, and the stabilizing support 50 are all metal supports. One end of the third support 70 is connected to the handrail panel 30, and the other end is fixedly connected to the inner wall of the side panel assembly 60. The third support 70 and the first support 40 are respectively located on opposite sides of the lifting mechanism assembly 20. The third support 70 and the first support 40 work together to form double-sided support for the handrail panel 30, thereby effectively preventing the handrail panel 30 from twisting or tilting when subjected to force.

[0048] Specifically, see Figure 2 , Figure 4 and Figure 5 The lifting handrail structure 1 also includes an upper cover plate covering assembly 80. The surface of the handrail panel 30 includes a snap-fit ​​part 31 and a mounting part 32. The snap-fit ​​part 31 is used to detachably connect with the upper cover plate covering assembly 80, and the mounting part 32 is used to connect with the first bracket 40 and the third bracket 70. Since the handrail panel 30 serves as an intermediate carrier connecting the upper cover plate covering assembly 80 and the lower lifting mechanism assembly 20, the snap-fit ​​part 31 and the mounting part 32 are arranged at different heights on the surface of the handrail panel 30, thereby increasing the overall strength of the handrail panel 30, making the handrail panel 30 less prone to bending, and ensuring the overall consistency of the lifting mechanism assembly 20 and the upper cover plate covering assembly 80 connected to the handrail panel 30.

[0049] The upper cover assembly 80 is attached to the armrest panel 30 by a metal buckle provided in the snap-fit ​​part 31, which is easy to disassemble. Preferably, the upper end of the upper cover assembly 80 is provided with a 10 mm foam block to increase comfort, and the surface is covered with PVC skin to increase the appearance and texture.

[0050] Furthermore, the lifting armrest structure 1 provided in this application can be applied to the lifting armrests on both sides of a car seat, thereby realizing the electric lifting function. The lifting armrests on both sides of the car seat can have built-in actuators and switch buttons. The buttons can control the lifting armrest structure 1 to stop at any position, thus providing options for different groups of people. The initial position of the upper cover plate covering assembly 80 of the lifting armrest structure 1 is flush with the seat. The soft covering structure has the same feel as the seat and can be hidden. After being lifted and opened, it is placed on both sides of the seat. The lifting stroke can be set to 150 mm, which meets the ergonomic function and increases the comfort of the seat.

[0051] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A lifting handrail structure, characterized in that, include: Base; A lifting mechanism assembly is fixedly connected to the base. The lifting mechanism assembly includes a motor, a lead screw, a lead screw slider, a slide rail, and a second bracket. The lead screw is driven and connected to the output shaft of the motor, and the lead screw slider is threadedly engaged with the lead screw. The armrest panel and the first bracket are provided. One end of the first bracket is connected to the armrest panel, and the other end is connected to the lifting mechanism assembly. The armrest panel is placed on top of the lifting mechanism assembly. The lifting mechanism assembly drives the first bracket to move vertically, thereby causing the handrail panel to rise or fall relative to the base, so as to adjust the height of the lifting handrail structure. The second bracket is fixedly connected to the base, and the second bracket extends vertically. The slide rail is connected to the second bracket, and the slide rail extends in the same direction as the second bracket. One end of the lead screw slider is movably connected to the slide rail, and the other end is connected to the first bracket. The first bracket and the handrail panel can be raised and lowered by moving the slider relative to the lead screw and the slide rail. The lead screw slider is engaged with the end of the first bracket through a circumferential limiting structure; The circumferential limiting structure constrains the lead screw slider to prevent the lead screw slider from rotating relative to the first bracket; The circumferential limiting structure includes multiple rib panels that fit against the lead screw slider, and the multiple rib panels have a chamfer on the side facing the lead screw slider.

2. The lifting handrail structure as described in claim 1, characterized in that, The second bracket, the lead screw slider, and the first bracket are arranged in parallel in sequence on the upper part of the base along the driving direction of the lifting mechanism assembly, so that the moving trajectory of the first bracket and the running trajectory of the lead screw and the lead screw slider are parallel to each other in space and do not interfere with each other.

3. The lifting handrail structure as described in claim 1, characterized in that, The base also includes a base panel; The second bracket and the motor are both fixedly connected to the base panel and are respectively disposed on both sides of the base panel; The motor is suspended or housed below the base panel, so that the motor's mounting position is recessed relative to the second bracket.

4. The lifting handrail structure as described in claim 1, characterized in that, It also includes a stabilizing bracket, one end of which is fixedly connected to the second bracket, and the other end of which is fixedly connected to the base; The stabilizing bracket forms a stable support structure between the second bracket and the base.

5. The lifting handrail structure as described in any one of claims 1-4, characterized in that, It also includes a side panel assembly, one end of which is connected to the armrest panel and the other end of which is connected to the first bracket; The lifting mechanism assembly and the first bracket are enclosed inside the side plate assembly.

6. The lifting handrail structure as described in claim 5, characterized in that, It also includes a third bracket, one end of which is connected to the armrest panel and the other end is fixedly connected to the inner wall of the side panel assembly; The third bracket and the first bracket are respectively located on opposite sides of the lifting mechanism assembly, and the third bracket and the first bracket work together to provide double-sided support for the handrail panel.

7. The lifting handrail structure as described in claim 6, characterized in that, It also includes an upper cover plate covering assembly, the surface of the armrest panel includes a snap-fit ​​part and a mounting part, the snap-fit ​​part is used to be detachably connected to the upper cover plate covering assembly, and the mounting part is used to be connected to the first bracket and the third bracket; The snap-fit ​​part and the mounting part are arranged at different heights on the surface of the handrail panel.

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