A telescopic roof handle, processing method and automobile

Abstract

The application discloses a telescopic ceiling handle, a processing method and an automobile, and relates to the technical field of automobile interiors. The telescopic ceiling handle comprises a buffer structure assembly arranged between a handle base cover and a handle base. The buffer structure assembly comprises a buffer structure framework and a buffer structure soft rubber connected as a whole. The buffer structure framework is matched with the inner contour of the handle base cover, and the buffer structure soft rubber is matched with the outer contour of the handle base cover. The buffer structure soft rubber can absorb the vibration generated by the impact between the handle base cover and the handle base when the buffer structure soft rubber is deformed under stress. The buffer structure framework is used for supporting the buffer structure soft rubber. The buffer structure assembly arranged between the handle base cover and the handle base can absorb the harsh sound generated by the impact when the ceiling handle is returned to the original position, improve the silent experience of the passenger compartment, and avoid the influence of the appearance quality caused by the collision and damage between the plastic parts.

Description

Technical Field

[0001] This invention relates to the field of automotive interior technology, and in particular to a retractable roof handle, its processing method, and an automobile. Background Technology

[0002] The statements herein provide only background information in relation to this invention and do not necessarily constitute prior art.

[0003] Telescopic ceiling handles typically use the interaction of springs and dampers to achieve the required return time during the handle's retraction process. However, when the ceiling handle returns to its original position, the base cover of the handle, under the strong torque of the spring, will collide with the handle base, which is made of the same plastic material, producing a harsh sound. Even if the spring torque is adjusted or a gap is designed between the two, it is impossible to avoid contact between the base cover and the base. On the contrary, it may cause poor fit between the base cover and the base, uneven gaps, and other appearance quality problems.

[0004] In existing technologies, a single layer of rubber pad is used as an isolation between the ceiling handle base cover and the base. However, the rubber pad is made of soft material and is fixed by either adhesive backing or rubber nails. This method is not reliable, especially when applied to moving parts, where the rubber pad is prone to falling off, curling and deforming, affecting the performance of the ceiling handle. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention aims to provide a retractable roof handle, a processing method, and an automobile. By utilizing a buffer structure assembly disposed between the handle base cover and the handle base, the invention can absorb the harsh noise generated by the impact when the roof handle returns to its original position, thereby improving the perceived quietness of the passenger cabin. At the same time, it can prevent the appearance quality from being affected by bumps or damage between plastic parts.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0007] In a first aspect, embodiments of the present invention provide a telescopic ceiling handle, including a buffer structure assembly disposed between a handle base cover and a handle base;

[0008] The buffer structure assembly includes a buffer structure skeleton and a buffer structure soft rubber connected as one piece. The buffer structure skeleton is adapted to the inner contour of the handle base cover, and the buffer structure soft rubber is adapted to the outer contour of the handle base cover. When the buffer structure soft rubber is deformed under force, it can absorb the vibration generated by the impact between the handle base cover and the handle base. The buffer structure skeleton is used to support the buffer structure soft rubber.

[0009] As a further implementation, the buffer structure skeleton and the buffer structure soft rubber are fused together by secondary injection molding.

[0010] As a further implementation, the buffer structure skeleton is provided with multiple grooves with openings facing outwards on its periphery;

[0011] The groove runs longitudinally through the buffer structure skeleton.

[0012] As a further implementation, the cross-section of the groove is trapezoidal; a set undercut angle is formed on the inner side of the groove.

[0013] As a further implementation, the groove and the soft rubber of the buffer structure have a set amount of overlap and lap.

[0014] As a further implementation, the surface of the buffer structure skeleton is distributed with several overflow holes.

[0015] As a further implementation, the diameter of the overflow hole gradually decreases from the side near the handle base cover to the other side.

[0016] As a further implementation, the buffer structure skeleton is made of polyoxymethylene material, and the buffer structure soft adhesive is made of styrene-based thermoplastic polyester material.

[0017] Secondly, embodiments of the present invention also provide a method for processing a telescopic ceiling handle, comprising:

[0018] The buffer structure skeleton is injection molded, and then the molded buffer structure skeleton is placed into a secondary overmolding injection mold.

[0019] A soft rubber melt for buffer structure is injected into the surface of the buffer structure skeleton, and after cooling, the buffer structure assembly is obtained.

[0020] The buffer structure assembly is installed between the handle base cover and the handle base.

[0021] Thirdly, embodiments of the present invention also provide an automobile, including a roof, wherein the roof is fitted with the aforementioned roof handle.

[0022] The beneficial effects of this invention are as follows:

[0023] (1) The buffer structure assembly of the present invention is disposed between the handle base cover and the handle base. The buffer structure assembly is composed of a buffer structure skeleton and a buffer structure soft rubber. The buffer structure skeleton provides support for the entire structure. The buffer structure soft rubber is tightly bonded to the buffer structure skeleton. When subjected to external impact, the buffer structure soft rubber can effectively disperse the impact force. Therefore, the buffer structure assembly can better perform its buffering function when subjected to external forces such as collision and compression. It can absorb the harsh sound generated by the impact, improve the quiet experience of the passenger cabin, and at the same time avoid the impact of collision and damage between plastic parts on the appearance quality.

[0024] (2) The shape of the buffer structure skeleton of the present invention is designed according to the inner contour of the handle base cover. At the same time, the soft rubber of the buffer structure is designed according to the outer contour of the handle base cover to form a continuous closed buffer layer, which maximizes the protection of the contact area between the handle base cover and the handle base, so as to optimize the noise reduction effect.

[0025] (3) The outer contour of the buffer structure skeleton of the present invention is provided with grooves. After the buffer structure skeleton is formed, the buffer structure soft rubber melt is injected into the surface of the buffer structure skeleton. The melt enters into each groove, which increases the contact area between the buffer structure soft rubber and the buffer structure skeleton, and the buffer structure soft rubber and the buffer structure skeleton form a tight bond. The surface of the buffer structure skeleton is also provided with overflow holes. The overflow holes cooperate with the grooves to enable the buffer structure soft rubber to fully cover the buffer structure skeleton, while avoiding the buffer structure soft rubber from the buffer structure skeleton from detaching or curling, collapsing and other phenomena. By designing appropriate undercut angles a1 and a2 for the skeleton grooves, the overlap amount b and overlap amount c between the grooves and the buffer structure soft rubber, and designing appropriate upper and lower opening sizes d and e and undercut angle f for the skeleton overflow holes, the buffer structure soft rubber and the buffer structure skeleton fit together as one during the secondary injection molding process.

[0026] (4) The buffer structure assembly of the present invention is made by a secondary injection molding process. When it acts between moving parts, it can absorb the strong and harsh noise generated by the impact when the handle returns to its original position. Attached Figure Description

[0027] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0028] Figure 1 This is a schematic diagram of the return process of an existing retractable ceiling handle;

[0029] Figure 2 This is a schematic diagram of the overall structure of the telescopic ceiling handle according to one or more embodiments of the present invention;

[0030] Figure 3 yes Figure 2 AA cross-sectional view of the retractable ceiling handle;

[0031] Figure 4 yes Figure 2 Cross-sectional view of the retractable ceiling handle (BB);

[0032] Figure 5 This is a schematic diagram of the arrangement of the buffer structure skeleton groove and overflow hole according to one or more embodiments of the present invention;

[0033] Figure 6This is a schematic diagram of the retractable ceiling handle return process according to one or more embodiments of the present invention;

[0034] Figure 7(a) is a top view of the buffer structure assembly according to one or more embodiments of the present invention;

[0035] Figure 7(b) is a longitudinal cross-sectional view of the buffer structure assembly according to one or more embodiments of the present invention;

[0036] Figure 8 This is a schematic diagram of the assembly process of the buffer structure assembly according to one or more embodiments of the present invention;

[0037] Figure 9 This is a schematic diagram of the parameters for the telescopic ceiling handle according to one or more embodiments of the present invention.

[0038] Among them, 1. Buffer structure assembly;

[0039] 11. Buffer structure skeleton; 12. Buffer structure soft rubber;

[0040] 111. Groove; 112. Overflow hole;

[0041] 2. Handle assembly;

[0042] 21. Steel handle; 22. Soft rubber handle; 23. Watch leather handle;

[0043] 3. Handle base cover; 4. Hinge structure;

[0044] 41. First hinge structure; 42. Second hinge structure;

[0045] 5. First pivot pin; 6. Second pivot pin; 7. Handle base; 8. Assembly screw; 9. Assembly screw. Detailed Implementation

[0046] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0047] In the description of this invention, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0048] Example 1:

[0049] See Figure 1In the grab handle assembly 2, the grab handle base 7 is fixed to the vehicle body sheet metal by mounting screws 9. When the grab handle assembly 2 is subjected to tension, the grab handle base cover 3 connected to it rotates around the first pivot pin 5 and the second pivot pin 6 via the hinge structure 4, separating from the grab handle base 7, thereby maximizing the passenger's hand grip space. However, when this type of ceiling grab handle is released and returned to its original position, even with the interaction of springs and dampers, impacts and vibrations between the grab handle base cover 3 and the grab handle base 7 are unavoidable, and the abnormal noises generated during this process are unacceptable. Furthermore, the method of using a single layer of rubber between the grab handle base cover 3 and the grab handle base 7 suffers from problems such as the rubber pad easily falling off and curling or deforming.

[0050] Based on this, this embodiment provides a telescopic ceiling handle, see [link / reference]. Figures 2-4 A buffer structure assembly 1 is installed between the handle base cover 3 and the handle base 7. The buffer structure assembly 1 is connected to the handle base cover 3 by assembly screws 8, which can buffer the impact between the handle base cover 3 and the handle base 7 during the return process in the telescopic state.

[0051] The buffer structure assembly 1 includes a buffer structure skeleton 11 and a buffer structure soft rubber 12. The buffer structure skeleton 11 and the buffer structure soft rubber 12 are manufactured using a two-stage injection molding process. During the two-stage injection molding process, the soft rubber material can be well filled into the surface and gaps of the buffer structure skeleton 11, making the two more tightly bonded. Furthermore, the two-stage injection molding process ensures that the soft rubber is evenly wrapped around the skeleton. When subjected to external impact, the buffer structure soft rubber 12 can effectively disperse the impact force. At the same time, the buffer structure skeleton 11 provides support for the entire structure, ensuring that the structure will not easily deform or be damaged during repeated buffering. This allows the buffer structure assembly 1 to better perform its buffering function when subjected to external forces such as collisions and compressions.

[0052] The soft rubber 12 of the buffer structure deforms under force to absorb the vibration generated by the impact between the handle base cover 3 and the handle base 7 during the return of the ceiling handle, reducing the collision and friction between the hard parts of the handle base cover 3 and the handle base 7. Therefore, it plays a good role in isolation and buffering during the extension and retraction of the handle assembly 2; at the same time, it can also avoid gaps generated during movement and improve visual perception.

[0053] In this embodiment, the buffer structure skeleton 11 is made of POM (Polyformaldehyde), and the buffer structure soft rubber 12 is made of TPS (Thermoplastic polyester). Utilizing the inherent material properties of POM, such as high strength, high rigidity, fatigue resistance, high wear resistance, excellent creep resistance suitable for long-term dynamic loads, and good dimensional stability due to low water absorption, it provides excellent support for the buffer structure soft rubber 12, preventing the inherent defects of material deformation and curling. As the wrapping material for the buffer structure, TPS can maximize its unique rubber elasticity, weather resistance, wear resistance, and shock absorption properties, buffering and absorbing strong, unpleasant, harsh noises, and improving the overall quietness of the components.

[0054] See Figure 3 and Figure 4 The shape of the buffer structure frame 11 is designed according to the inner contour of the handle base cover 3, that is, the shape of the buffer structure frame 11 is adapted to the inner wall of the handle base cover 3, and the two form a zero-gap fit; at the same time, the buffer structure soft rubber 12 is designed according to the outer contour of the handle base cover 3 to form a continuous closed buffer layer, which maximizes the protection of the contact area between the handle base cover 3 and the handle base 7, so as to optimize the silent effect.

[0055] To increase the contact area between the buffer structure skeleton 11 and the buffer structure soft rubber 12 and improve their bonding strength, a groove 111 is provided on the outer contour of the buffer structure skeleton 11; see [link / reference] Figure 5 The buffer structure frame 11 has several grooves 111 around its periphery. The grooves 111 extend through the buffer structure frame 11 in a direction perpendicular to the buffer structure frame 11, and the openings of the grooves 111 face outward (towards the inner wall of the handle base cover 3). After the buffer structure frame 11 is formed, the melt of the buffer structure soft rubber 12 is injected into the surface of the buffer structure frame 11. The melt enters into each groove 111, increasing the contact area between the buffer structure soft rubber 12 and the buffer structure frame 11, and the buffer structure soft rubber 12 and the buffer structure frame 11 form a tight bond.

[0056] In this embodiment, the cross-section of the groove 111 is trapezoidal, and the size of its open end is smaller than the size of its closed end, as shown in Figure 7(a). One side of the closed end of the groove 111 forms an inverted angle a1, and the other side forms an inverted angle a2. a1 and a2 can be equal or unequal. When a1 and a2 are equal, the cross-section of the groove 111 is an isosceles trapezoidal structure. The values ​​of a1 and a2 are in the range of 65° to 75°. If the angle is too small, it may affect the entry of the melt of the buffer structure soft adhesive 12 into the corner area of ​​the groove 111. If the angle is too large, it will affect the bonding performance between the buffer structure soft adhesive 12 and the buffer structure skeleton 11.

[0057] Referring to Figure 7(b), the groove 111 and the soft rubber of the buffer structure 12 have a certain overlap amount b and overlap amount c, wherein the overlap amount b is 2 to 3 mm and the overlap amount c is 1 to 1.5 mm, which further ensures the bonding performance of the buffer structure skeleton 11 and the soft rubber of the buffer structure 12.

[0058] See Figure 5 The surface of the buffer structure skeleton 11 is also provided with an overflow hole 112. The overflow hole 112 is used for the tight bonding between the buffer structure soft rubber 12 and the main body of the buffer structure skeleton 11. The overflow hole 112 cooperates with the groove 111 to enable the buffer structure soft rubber 12 to fully cover the buffer structure skeleton 11, while preventing the buffer structure soft rubber 12 from separating from the buffer structure skeleton 11 or from curling, collapsing or other phenomena.

[0059] To further ensure the bonding performance between the soft rubber 12 of the buffer structure and the frame 11 of the buffer structure, the overflow hole 112 in this embodiment is not a structure with a constant diameter. Referring to Figure 7(b), the diameter of the overflow hole 112 gradually decreases from the side near the handle base cover 3 to the other side, that is, its longitudinal section is an isosceles trapezoid. According to the view direction shown in Figure 7(b), the diameter of the upper end of the overflow hole 112 is d and the diameter of the lower end is e. Due to the different diameters at both ends, there is an undercut angle f on the inner wall of the overflow hole 112.

[0060] In this embodiment, the upper diameter d of the overflow hole 112 is 2.8 to 3.5 mm, the lower diameter e is 2.3 to 2.5 mm, and the undercut angle f is 10° to 15°. With the above parameters, the soft rubber of the buffer structure 12 can be better combined with the buffer structure skeleton 11 during the secondary injection molding process, so that the two are integrated into a single structure.

[0061] Referring to Figure 7(b), the soft rubber of the buffer structure 12 is wrapped around the outside of the buffer structure frame 11. The outer edge of the soft rubber of the buffer structure 12 has an outward extension. After the soft rubber of the buffer structure 12 is engaged with the handle base cover 3, the outward extension is attached to the bottom edge of the handle base cover 3. When the handle base cover 3 is fastened with the handle base 7, the outward extension is simultaneously attached to the surface of the handle base 7.

[0062] See Figure 9 When the buffer structure assembly 1 is fitted with the handle base cover 3 and the handle base 7, the following key parameters exist: the thickness g of the buffer structure skeleton 11, the thickness h of the buffer structure soft rubber 12, the distance j between the outer edge of the buffer structure soft rubber 12 and the outer edge of the handle base cover 3, the Y-axis overlap amount (full circle) k between the buffer structure soft rubber 12 and the handle base cover 3, the spacing m between the buffer structure soft rubber 12 and the handle base 7, the Z-axis spacing (distance between the bottom surface of the buffer structure soft rubber 12 and the bottom surface of the handle base cover 3) n, and the overlap amount p between the buffer structure soft rubber 12 and the handle base 7.

[0063] Wherein, g is 2.5mm~2.8mm, h is 1.5mm~2.0mm, j is 0.5mm~1.0mm, k is 2mm~2.5mm, m is 0~0.1mm, n is 0~0.1mm, and p is 1.5mm~2.0mm. By designing parameters such as the overlap of the soft rubber 12 between the handle base cover 3 and the handle base 7 and the overlap of the soft rubber 12 with the handle base cover 3, the overlap of the soft rubber 12 with the handle base 7, and the matching gap, the buffer structure assembly 1 can isolate the handle base cover 3 and the handle base 7 to the maximum extent when the ceiling handle returns to its original position, absorb the harsh sound generated by the impact, and improve the perceived quietness of the passenger cabin; at the same time, it can avoid the impact and damage between plastic parts, which would affect the appearance quality.

[0064] See Figure 3 and Figure 4 The handle assembly 2 includes a handle rubber 22 and a handle watch skin 23 wrapped around the outside of the handle rubber 22. The handle rubber 22 is provided with a handle steel strip 21. The handle steel strip 21 is connected to one end of the first hinge structure 41. The other end of the first hinge structure 41 is hinged to the second hinge structure 42 through the second axle pin 6. The other end of the second hinge structure 42 is hinged to the handle base 7 through the first axle pin 5. In this embodiment, the length of the first axle pin 5 is greater than the length of the second axle pin 6.

[0065] When assembling the buffer structure assembly 1 with the handle base cover 3, refer to... Figure 8 Place the handle base cover 3 in the positioning fixture, and use the handle base cover 3 to design a positioning pin and BOSS column structure to make the hinge structure 4 and handle assembly 2 coaxial with it; then use the assembly screws 8 to fix the buffer structure assembly 1 to the handle assembly 2, handle base cover 3 and hinge structure 4.

[0066] In this embodiment, the buffer structure assembly 1 is arranged between the handle base cover 3 and the handle base 7. See Figure 6 When the ceiling handle returns to its original position, it can absorb the loud, piercing sound generated by an impact, enhance the perceived quietness of the passenger cabin, and at the same time prevent the appearance quality from being affected by bumps or damage between plastic parts.

[0067] Compared to single-layer rubber, this embodiment features a tightly fitted buffer structure soft rubber 12 and buffer structure skeleton 11. The buffer structure skeleton 11 provides support, while the buffer structure soft rubber 12 has an energy-absorbing and buffering effect. The combination of these two elements achieves sound absorption while preventing structural deformation, ensuring the reliability of the telescopic ceiling handle. Furthermore, the buffer structure assembly 1 adopts a conformal design. The buffer structure skeleton 11 is designed to fit the inner contour of the handle base cover 3 with zero clearance, and the buffer structure soft rubber 12 is adapted to the outer contour of the handle base cover 3. This maximizes the protection of the contact area between the handle base cover 3 and the handle base 7, optimizing the noise reduction effect.

[0068] Example 2:

[0069] This embodiment provides a processing method for a telescopic ceiling handle. Based on the telescopic ceiling handle described in Embodiment 1, the buffer structure frame 11 is first injection molded using a secondary injection molding process. Then, the molded buffer structure frame 11 is placed in a secondary overmolding injection mold, and melted buffer structure soft rubber 12 is injected onto the surface of the buffer structure frame 11. After cooling, a buffer structure assembly 1 is obtained, which integrates the elastomer material of the buffer structure soft rubber 12 with the rigid material of the buffer structure frame 11. The buffer structure assembly 1 is arranged between the handle base cover 3 and the handle base 7, and the buffer structure assembly 1 and the handle base cover 3 are connected by assembly screws 8.

[0070] Furthermore, considering that the buffer structure skeleton 11 and the buffer structure soft rubber 12 are precision parts, a vertical overmolding machine is used in the secondary injection molding process. Gravity is used for vertical feeding, which better ensures that the two materials are bonded completely and firmly. This allows the buffer structure soft rubber 12 to be fully integrated with the buffer structure skeleton 11, avoiding abnormalities such as compression molding, bubbles, or delamination that may occur during conventional horizontal overmolding.

[0071] This embodiment uses a composite buffer structure produced by a secondary injection molding and overmolding process. When applied between moving parts, it can absorb the loud, piercing noise generated by the impact when the handle returns to its original position.

[0072] Example 3:

[0073] This embodiment provides a car, including a roof, on which a telescopic roof handle as described in Embodiment 1 is installed, especially on the roof on both sides of the passenger side and the rear seats, so that the rider can hold the handle to maintain balance during vehicle operation, such as during emergency braking, fast turning, or driving on bumpy roads.

[0074] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A telescopic ceiling handle, characterized in that, Includes a buffer structure assembly, which is disposed between the handle base cover and the handle base; The buffer structure assembly includes a buffer structure skeleton and a buffer structure soft rubber connected as one piece. The buffer structure skeleton is adapted to the inner contour of the handle base cover, and the buffer structure soft rubber is adapted to the outer contour of the handle base cover. When the buffer structure soft rubber is deformed under force, it can absorb the vibration generated by the impact between the handle base cover and the handle base. The buffer structure skeleton is used to support the buffer structure soft rubber. The buffer structure skeleton and the buffer structure soft rubber are fused together through secondary injection molding; The buffer structure skeleton is provided with multiple grooves with openings facing outwards on its periphery; The groove extends longitudinally through the buffer structure skeleton; The surface of the buffer structure skeleton is distributed with several overflow holes; The diameter of the overflow hole gradually decreases from the side closest to the handle base cover to the other side.

2. A telescopic ceiling handle according to claim 1, characterized in that, The groove has a trapezoidal cross-section; the inner side of the groove forms a set inverted angle.

3. A telescopic ceiling handle according to claim 2, characterized in that, The groove and the soft rubber of the cushioning structure have a set amount of overlap and lap.

4. A telescopic ceiling handle according to claim 1, characterized in that, The buffer structure skeleton is made of polyoxymethylene material, and the buffer structure soft adhesive is made of styrene-based thermoplastic polyester material.

5. A method for processing a telescopic ceiling handle according to any one of claims 1-4, characterized in that, include: The buffer structure skeleton is injection molded, and then the molded buffer structure skeleton is placed into a secondary overmolding injection mold. A soft rubber melt for buffer structure is injected into the surface of the buffer structure skeleton, and after cooling, the buffer structure assembly is obtained. The buffer structure assembly is installed between the handle base cover and the handle base.

6. A car, characterized in that, Includes a ceiling, the ceiling being equipped with a telescopic ceiling handle as described in any one of claims 1-4.

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