Door guard plate suspension type handrail with massage function and assembling process method thereof

Abstract

The application relates to the technical field of automobile interior parts, in particular to a door guard plate suspension type handrail with a massage function and an assembling process method thereof. The door guard plate suspension type handrail comprises a massage module, a plurality of massage heads capable of reciprocating in the longitudinal direction, a supporting framework with an installation cavity for installing the massage module and a wiring groove, a plurality of expansion and contraction through holes corresponding to the massage heads and capable of allowing the massage heads below to pass through, a soft coating layer covering the upper surface of the supporting framework, each massage head capable of extending upwards through the expansion and contraction through hole and reaching the lower surface of the soft coating layer, and a rear cover shell connected to the lower part of the supporting framework in a buckling mode, covering and sealing the installation cavity, and having an upper outer edge connected with a lower outer edge of the soft coating layer. The technical problem that the prior art has single function, poor structural compatibility, and cannot realize the massage function of the door guard plate suspension type handrail structure without destroying the appearance modeling, reducing the structural strength and causing space interference is solved.

Description

Technical Field

[0001] This application relates to the field of automotive interior parts technology, and in particular to a door panel floating armrest with massage function and its assembly process. Background Technology

[0002] With the development of the automotive industry and the improvement of consumption levels, users have placed higher demands on the comfort, health management functions, and technological feel of car interiors. In long-term driving or riding scenarios, the arms of drivers and passengers are in contact with the door panel armrests for extended periods, which can easily lead to fatigue and pressure. This has created a demand for additional functions such as hand relief and massage.

[0003] Currently, floating interior design has become a mainstream styling trend to enhance the sense of technology and space in a car, such as floating center console screens and floating armrests. This type of design breaks the traditional closed visual feeling by creating a gap in the suspended space, but its internal structural space is extremely limited.

[0004] Therefore, most of the existing door panel floating handrails only provide simple pillow and backrest functions, which are single-function and lack active massage and relaxation capabilities. Long-term driving and riding can easily lead to fatigue of the hand and forearm muscles, and cannot meet the high-level humanized needs.

[0005] Although hand massage and assistive devices based on soft or hard structures have emerged in the field of rehabilitation aids, such as high-output force rehabilitation assistive hand exoskeletons, their structures are large and complex, and their extreme parameters are mostly designed for medical rehabilitation scenarios. They cannot be directly applied to automotive interior scenarios where space, weight, appearance, and cost are extremely important, and especially cannot be directly applied to door panel floating armrests where the internal structural space requirements are extremely limited.

[0006] Forcibly integrating universal massage components into the floating armrests of the door panels would present numerous problems: Spatial interference: Universal massage modules are too large to be installed without compromising appearance and structural strength, and they easily interfere with internal door panel components, affecting assembly feasibility; Force matching and comfort: The armrest contact surface is narrower than conventional massage bearing surfaces like the chair back, and simply stacking massage modules can easily lead to uneven force, limited travel, harsh massage sensation, and even mechanical interference; Assembly and maintenance difficulties: Traditional massage module threaded connections are cumbersome, often involving adhesives or bolts. Encapsulating the massage components inside the armrest assembly not only presents complex production processes but also difficulties in later repair and replacement, resulting in high maintenance costs; Poor aesthetic compatibility: Exposed massage modules can damage the surface smoothness of the armrest, affecting the overall aesthetic quality of the cabin interior. Summary of the Invention

[0007] The purpose of this application is to provide a door panel floating handrail with massage function and its assembly process, so as to solve the technical problems of existing technology having single function and insufficient structural compatibility, and being unable to give massage function to the door panel floating handrail structure without damaging the appearance, reducing the structural strength and causing spatial interference.

[0008] Firstly, this application provides a floating handrail for a door panel with a massage function, comprising: The massage module includes multiple massage heads that can reciprocate longitudinally. The support frame has a mounting cavity and a wiring groove for accommodating the massage module, and multiple telescopic through holes corresponding to each of the massage heads, allowing the massage heads below them to pass through. A soft covering layer covers the upper surface of the support frame, and each of the massage heads can extend upward through the telescopic through-hole to abut against the lower surface of the soft covering layer; The rear cover housing is snapped onto the lower part of the support frame and covers and seals the mounting cavity, with its upper outer edge connected to the lower outer edge of the soft covering layer.

[0009] Furthermore, the front section of the floating handrail of the door panel is a palm support area; The support frame is used to accommodate the mounting cavity of the massage module, which is located below the palm support area.

[0010] Furthermore, the support frame is configured as a suspended hollow structure. The support frame includes a horizontally extending suspended end frame and a fixed end frame that is vertically connected to one side below the suspended end frame. The fixed end frame is used for hot-melt welding and fixing to the door panel, and one side of the suspended end frame is used for elastic hinge to the door panel. The mounting cavity is formed between the suspended end frame and the fixed end frame, and the suspended end frame is provided with each of the telescopic through holes at intervals.

[0011] Furthermore, the volume of the mounting cavity is set to be at least 1.15 times the volume of the massage module; and / or The mounting cavity is provided with a reserved gap of at least 2-3 mm between its length and both ends of the supporting frame; and / or The diameter of the telescopic through hole is set larger than the diameter of the massage head, so that there is a reserved gap of at least 0.5~1mm between the telescopic through hole and the massage head; and / or The massage head is made of medical-grade silicone material, with a diameter of 15-20mm and a hardness of 30-40HA.

[0012] Furthermore, the massage module employs a miniature eccentric wheel and crank-connecting rod transmission mechanism, including at least one drive motor, multiple miniature eccentric wheels connected to the drive shaft of the drive motor, multiple crank-connecting rods hinged to each of the miniature eccentric wheels, and a longitudinally extending guide sleeve sleeved on the outer periphery of each crank-connecting rod. The top end of each crank-connecting rod is fixedly connected to each of the massage heads, and each massage head can retract into and extend out of the guide sleeve.

[0013] Furthermore, the eccentricity of the micro eccentric wheel is 2.5~4mm, and the longitudinal extension stroke of the massage head driven by the crank connecting rod is 5~8mm; the transmission ratio of the drive motor has an adaptation frequency of 8~13 times / second and has 2~3 speed settings; the drive motor is a 12V DC brushless motor with a power of 5~8W and an operating noise of ≤35dB; and / or When not in operation, the massage head retracts into the guide sleeve, below or flush with the top of the guide sleeve.

[0014] Furthermore, at least two drive motors are arranged side by side, with the drive shafts of each drive motor extending out in parallel side by side, and each micro eccentric wheel is evenly distributed and connected to each drive shaft. The massage module also includes a mounting base. Each of the drive motors is fixed to the mounting base by a first elastic buckle. Along the extension direction of the drive shaft, a second elastic buckle is provided between every two adjacent micro eccentric wheels to fix each of the drive shafts to the mounting base. The first elastic buckle and / or the second elastic buckle are integrally formed with positioning pins to fix the drive motor and the drive shaft to the mounting base.

[0015] Furthermore, the soft covering layer is composed of a PU foam layer and a microfiber leather covering the PU foam layer, wherein the thickness of the PU foam layer is 8~10mm and the thickness of the microfiber leather is 0.8~1.0mm.

[0016] Furthermore, the rear cover housing is detachably connected to the support frame via a snap-fit ​​connection; and / or A ring-shaped reinforcing rib with a thickness of at least 2 mm is provided on the outer periphery of the mounting cavity, and the ring-shaped reinforcing rib is integrally injection molded with the supporting frame.

[0017] Secondly, this application provides an assembly process method for a door panel floating armrest with massage function, used to assemble the door panel floating armrest with massage function as described above, the assembly process method comprising: Pre-treatment of the support frame: The injection-molded support frame is subjected to plasma surface treatment, and the dimensional tolerance of the mounting cavity is simultaneously detected to be ±0.1mm; Soft covering layer assembly: The PU foam layer and microfiber leather are compositely wrapped on the upper surface of the support frame using a hot-pressing wrapping process; Massage module pre-assembly: Assemble the massage module transmission mechanism and conduct a 12V no-load test to ensure that the stroke error is ≤0.1mm and the operating noise is ≤32dB; Massage module assembly: Insert the qualified massage module into the mounting cavity, fix it with the first elastic buckle, the second elastic buckle and the positioning pin, and organize the wire harness and embed it into the wiring channel; Rear cover assembly: Secure the rear cover to the support frame using the third clip, and check that the fitting gap is ≤0.2mm; Suspended handrail assembly: The suspended handrail is connected and fixed to the door panel by flexible hinges and hot melt welding, the wiring harness is connected and power-on test is performed; Finished product inspection: A comprehensive inspection is conducted on the armrest's load-bearing capacity, massage function, and appearance. Once qualified, the product is packaged and put into storage.

[0018] Compared with the prior art, the floating armrest with massage function provided in this application and its assembly process include a massage module, a support frame, a soft covering layer, and a back cover shell. The support frame has a mounting cavity and a wiring groove for accommodating the massage module, and the support frame is also fixedly connected to the door panel. The massage module includes multiple massage heads that can reciprocate longitudinally. The support frame also has massage heads arranged one-to-one with each massage head to allow the massage heads below them to... Multiple telescopic through holes are provided; the soft covering layer covers the upper surface of the support frame, and each massage head can extend upward through the telescopic through holes provided above it to reach the lower surface of the soft covering layer. During massage, the soft covering layer contacts the human hand area to achieve a flexible and precise massage function; the back cover shell is fastened to the lower part of the support frame and covers and seals the mounting cavity, and the upper outer edge of the back cover shell is connected to the lower outer edge of the soft covering layer to form the outer contact surface of the door panel floating armrest.

[0019] This design, through the mounting cavity of the supporting frame and the enclosure of the mounting cavity by the rear cover, along with the miniaturization of the massage module, highly integrates the massage function into the floating armrest of the door panel in a modular, miniaturized, and easy-to-maintain manner, without compromising the appearance of the floating armrest and ensuring structural performance. Furthermore, the mounting cavity and wiring channels of the supporting frame effectively avoid spatial interference issues and improve assembly feasibility. A soft covering layer covers the upper surface of the supporting frame for direct contact with the human hand, while the longitudinally reciprocating massage heads of the massage module are located below the soft covering layer. During massage, these massage heads can extend and retract through the soft covering layer, acting on the human hand area with a gentle touch, moderate force, and precise positioning, providing a comfortable massage. The massage effect is enhanced, transforming the traditional floating armrest of the door panel, which only provides static headrest function, into an intelligent interior component with active hand massage and soothing function. During long-term driving or riding, it applies soothing pressure to the areas in contact with the hands of drivers and passengers, relieving local fatigue and pressure, significantly improving the user's driving and riding comfort experience and adding value to health care. Moreover, the massage module is hidden in the mounting cavity of the supporting frame and is also covered by the rear cover shell. The massage head's undulation is only felt through the soft covering layer during massage, maximizing the overall flatness and visual consistency of the floating armrest surface. It avoids problems such as appearance damage and exposed holes caused by functional integration, and while realizing the active massage function, it also preserves the original exquisite aesthetics and technological feel of the floating armrest. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is an exploded view of the structure of the suspended handrail for the door panel provided in the embodiment of this application; Figure 2 This is a schematic diagram of the supporting skeleton provided in the embodiments of this application; Figure 3 This is a schematic diagram of the fixed end frame of the support skeleton provided in the embodiments of this application; Figure 4 This is a schematic diagram of the structure of the massage module provided in the embodiment of this application; Figure 5 This is a schematic diagram of the drive mechanism and massage head of the massage module provided in an embodiment of this application; Figure 6 A schematic diagram of the mounting base for the massage module provided in an embodiment of this application; Figure 7 This is a schematic diagram of the structure of the first elastic buckle provided in the embodiments of this application; Figure 8 This is a schematic diagram of the structure of the second elastic buckle provided in the embodiment of this application.

[0022] Figure label: 10-Massage module; 11-Massage head; 12-Drive motor; 121 - Drive shaft; 13-Miniature eccentric wheel; 14-Guide sleeve; 151 - First elastic buckle; 152 - Second elastic buckle; 153 - Locating pin; 16-Mounting base; 20 - Supporting framework; 21-Suspended end frame; 211-Expansion / Contraction Through Hole; 22-Fixed end frame; 221 - Cable tray; 23-Installation cavity; 30 - Soft covering layer; 40 - Rear cover housing; 41 - Third buckle. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. 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, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0029] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0030] like Figures 1 to 8 As shown, this application provides a door panel floating handrail with massage function, and an assembly process method for applying the door panel floating handrail with massage function.

[0031] like Figures 1 to 3As shown, the door panel floating armrest with massage function includes a massage module 10, a support frame 20, a soft covering layer 30, and a rear cover housing 40. The massage module 10 includes multiple massage heads 11 that can reciprocate longitudinally. The support frame 20 has a mounting cavity 23 and a wiring channel 221 for accommodating the massage module 10, and multiple telescopic through holes 211 corresponding to each massage head 11, allowing the massage head 11 below it to pass through. The support frame 20 is also fixedly connected to the door panel. Furthermore, the door panel floating armrest uses a 2P quick-connect automotive connector, with the wiring harness embedded in the pre-designed wiring channel 221 and secured by clips to prevent wear and loosening, while effectively avoiding spatial interference and improving assembly feasibility.

[0032] The soft covering layer 30 covers the upper surface of the support frame 20, and each massage head 11 can extend upward through the telescopic through-hole 211 provided above it to the lower surface of the soft covering layer 30. During massage, the soft covering layer 30 contacts the human hand area to achieve a flexible and precise active massage function. The touch is soft, the force is moderate and the position is accurate, which enhances the massage experience. This upgrades the traditional door panel floating armrest that only provides a static headrest function to an intelligent interior component with active hand massage and soothing function. In long-term driving or riding scenarios, it applies soothing pressure to the contact area of ​​the driver and passenger's hands to relieve local fatigue and pressure, significantly improving the user's driving and riding comfort experience and health care added value.

[0033] The back cover shell 40 is fastened to the lower part of the support frame 20 and covers and seals the mounting cavity 23. The upper outer edge of the back cover shell 40 is connected to the lower outer edge of the soft covering layer 30 to form the outer contact contour surface of the door panel floating handrail. Specifically, the soft covering layer 30 can be in a 1 / 4 arc shape, and the back cover shell 40 can be in a 1 / 4 arc shape. After the two are joined, a complete semi-arc-shaped handrail body outer contact contour surface is formed.

[0034] Compared with the prior art, the embodiments of this application, through the setting of the mounting cavity 23 of the support frame 20 and the setting of the rear cover shell 40 covering and sealing the mounting cavity 23, as well as the miniaturization of the massage module 10, highly embed the massage function into the floating armrest of the door panel in a modular, miniaturized and easy-to-maintain manner, without compromising the appearance of the floating armrest and ensuring structural performance. At the same time, the massage module 10 is hidden in the mounting cavity 23 of the support frame 20 and covered by the rear cover shell 40. The massage head 11 is only felt through the soft covering layer 30 during massage, which maximizes the overall flatness and visual consistency of the surface of the floating armrest of the door panel, avoiding problems such as appearance damage and exposed holes caused by functional integration. While realizing the active massage function, it also ensures the original exquisite aesthetics and technological feel of the floating armrest of the door panel.

[0035] In a preferred embodiment, the positioning design is based on acupoints on the human hand. In practical applications, the front section of the floating handrail of the door panel is generally the palm support area (around the Laogong acupoint), specifically, this front section generally occupies about 1 / 3 of the total length of the floating handrail. Specifically, the support frame 20 can be used to accommodate the mounting cavity 23 of the massage module 10, which is correspondingly positioned below the palm support area, directly massaging and relieving the area around the Laogong acupoint in the palm, improving the fatigue relief effect, ensuring precise massage positioning, and enhancing massage comfort. ANSYS simulation verification shows that the vibration offset is ≤0.5mm, ensuring operational stability.

[0036] Regarding the aforementioned support frame 20, specifically, the support frame 20 is designed as a suspended hollow structure with a hollowing rate between 30% and 40%, making the support frame 20 lighter in weight, balancing lightweight and structural strength, and facilitating the suspension design.

[0037] Further optimization of the support frame 20 is to use PP+GF30 material for injection molding. PP+GF30 material is a composite material, specifically referring to reinforced polypropylene (PP) with 30% glass fiber (GF) by mass. This material uses inexpensive, low-density, corrosion-resistant, and processable and chemically stable polypropylene resin as the matrix. By adding glass fiber, which has high tensile strength, high elastic modulus, excellent heat resistance and low price, it is blended and modified to form an engineered composite plastic with high strength, high rigidity, high heat resistance, good dimensional stability and good molding processability.

[0038] like Figures 1 to 3As shown, in one specific embodiment, the support frame 20 may include a horizontally extending suspended end frame 21 and a vertically downwardly connected fixed end frame 22 connected to one side below the suspended end frame 21. The fixed end frame 22 is used for hot-melt welding and fixing to the door panel. One side of the suspended end frame 21 is used for elastic hinge with the door panel, and the torsional stiffness of the elastic hinge is 5~8 N·m / rad. The aforementioned mounting cavity 23 is formed between the suspended end frame 21 and the fixed end frame 22, and the aforementioned telescopic through holes 211 are spaced apart on the suspended end frame 21. The aforementioned wiring groove 221 is provided on the fixed end frame 22.

[0039] The design of this support frame 20 effectively utilizes the structural space within the shape of the floating handrail of the door panel. Without compromising the appearance of the floating handrail, it achieves optimal utilization of internal space while ensuring structural performance and effectively avoiding spatial interference.

[0040] Furthermore, by combining parametric modeling and finite element simulation, we ensure that the structural mechanics and functionality are compatible, as detailed below: Preferably, the volume of the mounting cavity 23 is at least 1.15 times the volume of the massage module 10, that is: V 安装腔 ≥1.15V 按摩模块 Install it properly with sufficient margin to avoid spatial interference.

[0041] Preferably, the mounting cavity 23 is provided with a reserved gap of at least 2~3mm between both ends of the support frame 20 in the length direction. That is, the length L of the support frame 20 can be determined by the formula: L=L0-2δ, where L0 is the reserved length of the mounting cavity 23, δ is the reserved gap, which can be 2~3mm, and the rated load is ≥500N.

[0042] Preferably, the diameter of the telescopic through hole 211 is larger than the diameter of the massage head 11, so that there is a reserved gap of at least 0.5~1mm between the telescopic through hole 211 and the massage head 11. That is, the diameter D of the telescopic through hole 211 conforms to the formula: D=d+2Δ, where d is the diameter of the massage head 11 and Δ is the reserved gap, which can be 0.5~1mm. The reserved gap Δ can ensure that the massage head 11 can pass safely and prevent stroke interference.

[0043] Furthermore, each massage head 11 can be made of medical-grade silicone material, and the diameter of each massage head 11 can be set to 15~20mm, with a hardness of 30~40HA, conforming to the mechanical characteristics of the human palm and enhancing the soothing effect.

[0044] Preferably, the edges of each telescopic through hole 211 are rounded, with the rounding width being 3~5mm and the arc diameter R being 2mm.

[0045] Preferably, the soft covering layer 30 can be composed of a PU foam layer and a microfiber leather covering the PU foam layer, specifically, the thickness of the PU foam layer is 8~10mm, and the thickness of the microfiber leather is 0.8~1.0mm.

[0046] like Figures 4 to 8 As shown, regarding the aforementioned massage module 10, a specific embodiment is that the massage module 10 can specifically employ a miniature eccentric wheel 13 and a crank-connecting rod transmission mechanism. Specifically, it may include at least one drive motor 12, multiple miniature eccentric wheels 13 rigidly connected to the drive shaft 121 of the drive motor 12, multiple crank-connecting rods hinged to each miniature eccentric wheel 13 in a one-to-one correspondence, and a longitudinally extending guide sleeve 14 sleeved on the outer periphery of each crank-connecting rod. The top end of each crank-connecting rod is fixedly connected to each massage head 11 in a one-to-one correspondence, and each massage head 11 can retract into and extend out of the guide sleeve 14. The number of miniature eccentric wheels 13, the number of crank-connecting rods, and the number of guide sleeves 14 are all determined according to the number of massage heads 11.

[0047] The drive motor 12 drives the miniature eccentric wheel 13 to rotate, converting the rotational motion into the reciprocating motion of the massage head 11. By adopting a flexible transmission mechanism of eccentric wheel + connecting rod + telescopic massage head, the motion is smoothly transmitted through hinges, elastic connections and other means, reducing vibration and impact, while realizing the active massage function of the miniature massage mechanism.

[0048] Furthermore, parametric modeling and finite element simulation of the miniature eccentric wheel 13 and crank-connecting rod transmission mechanism were conducted to ensure structural mechanics and functional compatibility, as detailed below: Preferably, the eccentricity e of the miniature eccentric wheel 13 is 2.5~4mm, and the extension stroke S of the massage head 11 driven by the crank connecting rod along the longitudinal direction is 5~8mm, which is determined according to the formula S=2e, to ensure a comfortable massage intensity. The reasonable setting of the eccentricity parameter determines the extension range and force.

[0049] Preferably, the transmission ratio of the drive motor 12 is adapted to a frequency of 8 to 13 times / second and supports 2 to 3 speed settings. The massage force is uniform, the touch is soft and comfortable, and the multi-speed settings enhance the humanized experience and meet different driving needs.

[0050] More preferably, the drive motor 12 can be a 12V DC brushless motor with a power P of 5~8W and an operating noise of ≤35dB. The power P is obtained by formula... The calculations are as follows: F = 5~8N, v = 0.01~0.02m / s, η = 0.85~0.9, power P ranges from 5~8W, operating noise ≤35dB, compatible with vehicle power supply, and ensures driving force.

[0051] In a preferred embodiment, when not in operation, the massage head 11 retracts into the guide sleeve 14, below or flush with the top of the guide sleeve 14, with a flushing error of ≤0.2mm, ensuring the surface of the armrest is flat, avoiding the risk of scratching caused by the exposed massage head 11, and ensuring driving and riding safety.

[0052] In a further preferred embodiment, the inner diameter D of the guide sleeve 14 can be determined according to D=d+2Δ, where d is the diameter of the massage head 11 and Δ is the reserved gap to ensure accurate movement and prevent stroke interference.

[0053] like Figure 4 and Figure 5 As shown, this application uses two drive motors 12 arranged side by side as an example for illustration. The drive shafts 121 of the two drive motors 12 extend out in parallel side by side, and each micro eccentric wheel 13 is evenly distributed and connected to each drive shaft 121. Specifically, this application uses the example of setting 8 micro eccentric wheels 13 and 4 micro eccentric wheels 13 evenly arranged on each of the two drive shafts 121 for illustration.

[0054] Furthermore, the massage module 10 may also include a mounting base 16, such as... Figure 4 and Figure 7 As shown, each drive motor 12 can be engaged and fixed to the mounting base 16 via the first elastic buckle 151. Figure 4 and Figure 8 As shown, along the extension direction of the drive shaft 121, a second elastic buckle 152 can be provided between every two adjacent miniature eccentric wheels 13 to engage and fix each drive shaft 121 to the mounting base 16.

[0055] Furthermore, both the first elastic buckle 151 and the second elastic buckle 152 are integrally formed with positioning pins 153 to engage and fix the drive motor 12 and drive shaft 121 onto the mounting base 16. This achieves screwless detachable fixing, facilitating later maintenance, and the integrated buckle positioning ensures accurate positioning.

[0056] Specifically, the number n of the second elastic buckle 152 can be determined by... The calculation shows that G = 0.3~0.5kg, F = 15~20N, and four of the second elastic buckles 152 can be set. The diameter of the positioning pin 153 is 4~5mm, and the accuracy is ≤0.1mm, which improves the reliability and stability of the connection.

[0057] like Figure 1 As shown, in one optional embodiment, the back cover housing 40 can be detachably connected to the support frame 20 by a snap-fit ​​connection. Specifically, the back cover housing 40 can be detachably snapped to the support frame 20 by a third snap-fit ​​41, which facilitates quick disassembly and maintenance in the later stage and reduces operation and maintenance costs.

[0058] Overall, the rear cover shell 40 can be detachably covered and sealed the mounting cavity 23, forming a modular structure of "pre-installation-encapsulation-removability". In the production process, the massage module 10 can be pre-assembled and tested independently before being installed into the mounting cavity 23 of the support frame 20, which simplifies the assembly process on the production line and improves assembly efficiency. In the later maintenance process, only the rear cover shell 40 needs to be removed to repair or replace the massage module 10 without damaging the soft covering layer 30 or disassembling the entire door panel floating armrest, which significantly reduces the difficulty and cost of maintenance and extends the effective service life of the product.

[0059] Optionally, the rear cover housing 40 and the door panel can use the same texture and color to ensure visual consistency of the cabin interior.

[0060] In a preferred embodiment, an annular reinforcing rib with a thickness of at least 2 mm can be provided on the outer periphery of the mounting cavity 23 to improve the structural strength, and preferably the annular reinforcing rib is integrally injection molded with the supporting frame 20.

[0061] Preferably, each hinge position of the structure of this application is provided with a 3-5mm thick rubber buffer pad to absorb vibration, avoid abnormal noise during operation, and balance structural strength and quiet operation.

[0062] This application takes a floating armrest for the door panel of a compact SUV as an example, applies the solution of this application, and verifies the feasibility and superiority of the solution of this application with the following specific parameters.

[0063] Support frame 20: Made of PP+GF30 material. =35MPa, length L is 280mm, width is 80mm and height is 60mm; the dimensions (length × width × height) of the mounting cavity 23 of the support frame 20 used to accommodate the massage module 10 are 90×55×35mm, the thickness of the annular reinforcing rib is 2mm, the rated load is ≥500N, the diameter of the telescopic through hole is 18mm, and it adopts R2mm arc edging. It has been verified as qualified by ANSYS simulation.

[0064] Soft covering layer 30: PU foam layer thickness 8mm, microfiber leather covering. Massage module 10: 12V / 6W DC brushless motor, with redundant design to meet... The specifications require an operating noise level of 32dB, 8 medical-grade silicone massage heads (11 heads), a diameter of 18mm, a hardness of 35HA, a telescopic stroke S of 6mm, and, based on the calculation of S=2×3, support for 3 speed settings with a frequency of 8.3-16.7 times / second.

[0065] Connection structure: 4 second elastic buckles, made of The calculation shows that n ≥ G / F, which conforms to the assembly specifications. The positioning pin is 153 with a diameter of 4mm. It adopts a 2P quick connector for automobiles, ensuring reliable connection and easy maintenance.

[0066] Furthermore, this application also provides an assembly process method for a door panel floating handrail with massage function, used to assemble the door panel floating handrail with massage function as described in any of the foregoing embodiments. The assembly process method includes: Pretreatment of the support frame: Plasma surface treatment (frequency 300~400W, time 15~20s) is performed on the injection-molded support frame 20, and the dimensional tolerance of the mounting cavity 23 is simultaneously detected to be ±0.1mm; Soft covering layer assembly: The PU foam layer and microfiber leather are compositely wrapped on the upper surface of the support frame 20 using a hot-pressing wrapping process (temperature 80~90℃, pressure 0.3~0.5MPa, time 30~40s); Massage module pre-installation: Assemble the transmission mechanism of massage module 10 and conduct a 12V no-load test to ensure that the stroke error is ≤0.1mm and the operating noise is ≤32dB; Massage module 10 assembly: Insert the qualified massage module 10 into the mounting cavity 23, fix it to the positioning pin 153 by elastic buckles (including the first elastic buckle 151 and the second elastic buckle 152), and organize the wire harness and embed it into the wiring groove 221. Rear cover assembly: The rear cover 40 is fixedly connected to the support frame 20 by the third buckle 41, and the fitting gap is checked to be ≤0.2mm; Suspended handrail assembly: The suspended handrail is connected and fixed to the door panel by flexible hinges and hot melt welding, the wiring harness is connected and power-on test is performed; Finished product inspection: A comprehensive inspection is conducted on the armrest's load-bearing capacity, massage function, and appearance. Once qualified, the product is packaged and put into storage.

[0067] This application also verifies the effectiveness of the above embodiments. After 1000 hours of bench durability testing and real-vehicle road testing, the verification results are as follows, fully demonstrating the feasibility of the proposed solution: Structural mechanics: Under a load of 500N, the maximum deformation of the support frame 20 is 0.3mm, the maximum stress is 28MPa (safety factor is 1.25), and the vibration offset is 0.3mm, which meets the design requirements; Massage function: It runs continuously without faults, and the frequency and stroke deviations meet the standards. The operating noise is 30~32dB, and the hand-soothing effect is good. Assembly reliability: No abnormalities were found after 1000 assembly and disassembly tests; the rear cover disassembly time is ≤30s, and maintenance is convenient. Design Compatibility: The massage heads are flush with the door panel with a difference of 0.15mm, ensuring a unified and aesthetically pleasing appearance.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A floating handrail for a door panel with a massage function, characterized in that, include: The massage module includes multiple massage heads that can reciprocate longitudinally. The support frame has a mounting cavity and a wiring groove for accommodating the massage module, and multiple telescopic through holes corresponding to each of the massage heads, allowing the massage heads below them to pass through. A soft covering layer covers the upper surface of the support frame, and each of the massage heads can extend upward through the telescopic through-hole to abut against the lower surface of the soft covering layer; The rear cover housing is snapped onto the lower part of the support frame and covers and seals the mounting cavity, with its upper outer edge connected to the lower outer edge of the soft covering layer.

2. The door panel floating armrest with massage function according to claim 1, characterized in that, The front section of the floating handrail of the door panel is a palm support area. The support frame is used to accommodate the mounting cavity of the massage module, which is located below the palm support area.

3. The door panel floating handrail with massage function according to claim 1 or 2, characterized in that, The support frame is configured as a suspended hollow structure. The support frame includes a horizontally extending suspended end frame and a fixed end frame that is vertically connected to one side below the suspended end frame. The fixed end frame is used for hot-melt welding and fixing to the door panel. One side of the suspended end frame is used for elastic hinge to the door panel. The mounting cavity is formed between the suspended end frame and the fixed end frame, and the suspended end frame is provided with each of the telescopic through holes at intervals.

4. The door panel floating handrail with massage function according to claim 3, characterized in that, The volume of the mounting cavity is set to be at least 1.15 times the volume of the massage module; and / or The mounting cavity is provided with a reserved gap of at least 2-3 mm between its length and both ends of the supporting frame; and / or The diameter of the telescopic through hole is set larger than the diameter of the massage head, so that there is a reserved gap of at least 0.5~1mm between the telescopic through hole and the massage head; and / or The massage head is made of medical-grade silicone material, with a diameter of 15-20mm and a hardness of 30-40HA.

5. The door panel floating armrest with massage function according to claim 1, characterized in that, The massage module employs a miniature eccentric wheel and crank-connecting rod transmission mechanism, including at least one drive motor, multiple miniature eccentric wheels connected to the drive shaft of the drive motor, multiple crank-connecting rods hinged to each of the miniature eccentric wheels, and a longitudinally extending guide sleeve sleeved on the outer periphery of each crank-connecting rod. The top end of each crank-connecting rod is fixedly connected to each of the massage heads, and each massage head can retract into and extend out of the guide sleeve.

6. The door panel floating handrail with massage function according to claim 5, characterized in that, The eccentricity of the miniature eccentric wheel is 2.5~4mm, and the longitudinal extension stroke of the massage head driven by the crank connecting rod is 5~8mm; the transmission ratio of the drive motor has an adaptive frequency of 8~13 times / second and 2~3 speed settings; the drive motor is a 12V DC brushless motor with a power of 5~8W and an operating noise of ≤35dB; and / or When not in operation, the massage head retracts into the guide sleeve, below or flush with the top of the guide sleeve.

7. The door panel floating handrail with massage function according to claim 5 or 6, characterized in that, At least two drive motors are arranged side by side, and the drive shafts of each drive motor extend out in parallel side by side. Each miniature eccentric wheel is evenly distributed and connected to each drive shaft. The massage module also includes a mounting base. Each of the drive motors is fixed to the mounting base by a first elastic buckle. Along the extension direction of the drive shaft, a second elastic buckle is provided between every two adjacent micro eccentric wheels to fix each of the drive shafts to the mounting base. The first elastic buckle and / or the second elastic buckle are integrally formed with positioning pins to fix the drive motor and the drive shaft to the mounting base.

8. The door panel floating armrest with massage function according to claim 1, characterized in that, The soft covering layer is composed of a PU foam layer and a microfiber leather covering the PU foam layer. The thickness of the PU foam layer is 8~10mm, and the thickness of the microfiber leather is 0.8~1.0mm.

9. The door panel floating armrest with massage function according to claim 1, characterized in that, The rear cover housing is detachably connected to the support frame via a snap-fit ​​connection; and / or A ring-shaped reinforcing rib with a thickness of at least 2 mm is provided on the outer periphery of the mounting cavity, and the ring-shaped reinforcing rib is integrally injection molded with the supporting frame.

10. An assembly process for a floating handrail with massage function on a door panel, characterized in that, The assembly process for obtaining the door panel floating armrest with massage function as described in any one of claims 1 to 9 includes: Pre-treatment of the support frame: The injection-molded support frame is subjected to plasma surface treatment, and the dimensional tolerance of the mounting cavity is simultaneously detected to be ±0.1mm; Soft covering layer assembly: The PU foam layer and microfiber leather are compositely wrapped on the upper surface of the support frame using a hot-pressing wrapping process; Massage module pre-assembly: Assemble the massage module transmission mechanism and conduct a 12V no-load test to ensure that the stroke error is ≤0.1mm and the operating noise is ≤32dB; Massage module assembly: Insert the qualified massage module into the mounting cavity, fix it with the first elastic buckle, the second elastic buckle and the positioning pin, and organize the wire harness and embed it into the wiring channel; Rear cover assembly: Secure the rear cover to the support frame using the third clip, and check that the fitting gap is ≤0.2mm; Suspended handrail assembly: The suspended handrail is connected and fixed to the door panel by flexible hinges and hot melt welding, the wiring harness is connected and power-on test is performed; Finished product inspection: A comprehensive inspection is conducted on the armrest's load-bearing capacity, massage function, and appearance. Once qualified, the product is packaged and put into storage.

Images