A semi-concealed handle structure facilitating glue injection sealing

Abstract

The application provides a semi-concealed handle structure convenient for glue sealing, relates to the technical field of automobile parts, and comprises a handle body and a cover plate fixed to the outer side of the handle body through a screw, a slope structure for assembly guidance is arranged in the middle of the cover plate, an annular glue injection groove is arranged on the periphery of the cover plate, the annular glue injection groove is divided into a slope bottom area, a slope area and a slope top area by the slope structure, the slope bottom area is parallel to the slope top area, the slope area is located between the slope top area and the slope bottom area, a baffle is arranged on the slope area, and the baffle is arranged vertically to the slope bottom area. The application has the effect of improving the glue sealing performance of the semi-concealed handle.

Description

Technical Field

[0001] This application relates to the field of automotive parts technology, and in particular to a semi-concealed handle structure that is easy to seal with adhesive. Background Technology

[0002] With the continuous development of automotive design, semi-concealed door handles have gradually become a mainstream design due to their combination of aesthetics and low wind resistance. These handles typically integrate mechanical or electronic components internally, protected by an external cover. Since car doors are constantly exposed to complex environments such as rain and dust, the connection between the cover and the handle body must have excellent sealing performance to prevent moisture infiltration that could lead to corrosion, short circuits, or other malfunctions of internal electrical components, affecting the handle's normal function and lifespan.

[0003] Currently, a common sealing solution involves installing a ring-shaped sealing strip at the connection between the cover plate and the handle body. Specifically, the cover plate is typically secured to its outer periphery with multiple screws, and a groove for injecting adhesive is provided in the screw mounting area. An adhesive injection process forms the ring-shaped sealing strip, achieving waterproofing and dustproofing. Furthermore, for ease of assembly, the center of the cover plate is usually designed with a sloping structure to guide screw alignment during installation, improving assembly efficiency.

[0004] However, the aforementioned technologies have the following problems: During the glue injection process, the sloping structure in the middle of the cover plate affects the flow of the glue, making it easy for the glue to be insufficiently filled or form voids in the sloping area, leading to a decrease in the local sealing performance of the sealing strip. This problem not only reduces the airtightness pass rate of the handle switch, but may also cause internal components to be damaged by moisture due to sealing failure, increasing after-sales maintenance costs. At the same time, because poor glue injection requires rework and repair, production efficiency is also significantly affected. Therefore, there is an urgent need for an improved semi-concealed handle structure to optimize the glue injection sealing process and improve sealing reliability and production efficiency. Utility Model Content

[0005] To improve the problem of insufficient sealing in semi-concealed handles, this application provides a semi-concealed handle structure that facilitates glue injection sealing.

[0006] The semi-concealed handle structure that facilitates glue injection sealing provided in this application adopts the following technical solution:

[0007] A semi-concealed handle structure that facilitates glue injection and sealing includes a handle body and a cover plate fixed to the outside of the handle body by screws. The cover plate has a ramp structure for assembly guidance in the middle and an annular glue injection groove around the periphery of the cover plate. The ramp structure divides the annular glue injection groove into a bottom area, a ramp area, and a top area. The bottom area is parallel to the top area. The ramp area is located between the top area and the bottom area. A baffle is provided in the ramp area, and the baffle is perpendicular to the bottom area.

[0008] Furthermore, multiple baffles are provided and arranged at intervals along the inclined direction of the slope area, forming a liquid buffer cavity between adjacent baffles.

[0009] Furthermore, the height of the baffle changes in a stepped manner along the slope direction, with the baffle height near the bottom of the slope being lower than that near the top of the slope.

[0010] Furthermore, the top surface of the baffle is designed to be inclined, with the inclination angle being consistent with the inclination angle of the slope area.

[0011] Furthermore, the spacing between adjacent baffles is equal, and the height difference between adjacent baffles is equal.

[0012] Furthermore, the bottom of the annular injection groove is provided with a recess.

[0013] Furthermore, the depth of the groove is 1 / 4 to 1 / 3 of the total depth of the annular injection groove.

[0014] Furthermore, the annular injection groove has a protrusion at the top of its slope, and the height of the protrusion is not greater than the depth of the annular injection groove.

[0015] Furthermore, the height of the protrusion is 1 / 3 to 1 / 2 of the depth of the glue injection groove.

[0016] Furthermore, the baffle and the cover are integrally formed.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] 1. This application effectively prevents the adhesive from flowing too quickly in the slope area due to gravity by setting a baffle perpendicular to the bottom of the slope area, ensuring that the adhesive is fully filled in the slope area and avoiding sealing failure caused by air bubbles or insufficient adhesive.

[0019] 2. By arranging multiple baffles at intervals along the slope, adhesive buffer chambers are formed, which ensures that the adhesive is evenly distributed during the flow process, reducing local accumulation or voids and improving the overall coverage quality of the sealant. The layout of multiple baffles with equal spacing and height difference, combined with the inclined design of the top surface of the baffles, ensures that the flow resistance of the adhesive in each buffer chamber is uniform, avoiding differences in adhesive layer thickness caused by uneven local pressure, enhancing long-term sealing durability, and improving the stability of the adhesive injection process.

[0020] 3. A groove is set in the annular dispensing groove to increase the contact area between the adhesive and the groove wall, forming a mechanical interlocking effect to prevent the adhesive layer from falling off due to vibration or temperature changes; a protrusion is set in the annular dispensing groove to restrict the flow of the adhesive and to precisely control the thickness of the adhesive. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is an assembly diagram of a semi-concealed handle.

[0023] Figure 2 This is an assembly diagram of the handle body and cover plate according to an embodiment of this application.

[0024] Figure 3 This is an exploded view of the handle body and cover plate according to an embodiment of this application.

[0025] Figure 4 This is a schematic diagram of the cover plate according to an embodiment of this application.

[0026] Figure 5 This is a partial cross-sectional view of the cover plate filling adhesive layer according to an embodiment of this application.

[0027] Reference numerals: 1. Handle body; 2. Cover plate; 20. Sloping structure; 21. Circular enclosure; 22. Circular glue injection groove; 221. Bottom of slope area; 222. Sloping area; 223. Top of slope area; 23. Groove; 22. Protrusion; 3. Baffle; 4. Adhesive layer; 5. Handle base. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0029] Reference Figure 1 The semi-concealed handle includes a handle base 5 and a handle body 1 mounted on the handle base. The handle body 1 houses electrical components for controlling door opening. A cover plate 2 covers the interior of the handle body 1 to protect these electrical components. For ease of assembly, the center of the cover plate 2 is typically designed with a ramp structure 20 to guide screw alignment during installation and improve assembly efficiency. However, during the glue injection process, insufficient filling or voids can easily occur at the ramp structure 20.

[0030] Therefore, this application discloses a semi-concealed handle structure that facilitates glue injection sealing. (Refer to...) Figure 2The semi-concealed handle structure, which facilitates glue sealing, includes a handle body 1, a handle base 5, and a cover plate 2 fixed to the outside of the handle body 1 by screws. The cover plate 2 is used to cover and protect the mechanical or electronic components inside the handle, while forming a sealed connection with the handle body 1 to prevent water, dust, and other impurities from entering.

[0031] like Figure 2 As shown, the cover plate 2 has a ramp structure 20 for assembly guidance in the middle. During assembly, the ramp structure 20 can guide the screws and screw holes to quickly align, improving installation efficiency and reducing manual adjustment time. The ramp structure 20 can also distribute the assembly force to a certain extent, preventing the cover plate 2 from deforming during assembly.

[0032] Reference Figure 3 and Figure 4 An annular retaining ring 21 is provided on the outer side of the cover plate 2. When the cover plate 2 is assembled with the handle body 1, the annular retaining ring 21 and the handle body 1 form an annular glue injection groove 22. The annular glue injection groove 22 is continuously distributed along the circumference of the cover plate and is used to form a glue layer seal between the cover plate 2 and the handle body 1. The ramp structure 20 divides the annular glue injection groove 22 into a bottom area 221, a ramp area 222, and a top area 223. The bottom areas of the bottom area 221 and the top area 223 are parallel to each other, and the ramp area 222 is located between them and is arranged at an angle.

[0033] To address the issue of excessively rapid flow and insufficient filling of the adhesive in the slope zone 222, this embodiment includes multiple baffles 3 in the slope zone 222. The baffles 3 extend perpendicularly to the bottom of the slope zone 221 and are spaced apart along the slope direction. Adhesive buffer chambers are formed between adjacent baffles 3 to segmentally block the flow rate of the adhesive, ensuring that the adhesive is fully filled within the buffer chambers and air bubbles are expelled, thereby preventing local voids or insufficient adhesive volume.

[0034] In a preferred embodiment, the height of the baffle 3 varies in a stepped manner along the inclination direction of the slope region 222, that is, the height of the baffle near the bottom of the slope region 221 is lower than the height of the baffle near the top of the slope region 223, and the height difference between adjacent baffles is equal. The top surface of the baffle 3 is designed to be at the same inclination angle as the slope region 222, so that the adhesive is subjected to uniform force during the flow process, which helps to ensure the consistency of the adhesive layer thickness.

[0035] like Figure 4 As shown, the bottom of the annular glue injection groove 22 is also provided with a groove 23, the depth of which is 1 / 4 to 1 / 3 of the total depth of the annular glue injection groove. The groove 23 can increase the contact area between the glue layer and the groove wall, forming a mechanical interlocking effect, thereby improving the adhesion and stability of the glue layer in long-term use.

[0036] In the slope crest area 223, a protrusion 24 is integrally formed. The height of the protrusion 24 is no greater than the depth of the annular injection groove 22, preferably 1 / 3 to 1 / 2 of the depth of the injection groove. The protrusion 24 acts as a limiter during the injection process, effectively preventing excessive accumulation of adhesive in the slope crest area and ensuring a uniform adhesive layer thickness. Figure 5 As shown.

[0037] During the actual sealant application process, the operator injects liquid sealant into the annular injection groove 22 through a pre-set injection port. The sealant first flows into the bottom slope area 221 and then, under the influence of gravity, flows along the slope area 222 to the top slope area 223. Multiple baffles 3 segmentally block and buffer the sealant, ensuring even distribution and expelling air bubbles during its flow. The groove 23 enhances the bonding force between the sealant layer and the cover plate 2 and handle body 1, while the protrusion 24 controls the thickness of the sealant layer, thus forming a dense and robust sealing structure after the sealant has cured.

[0038] In this embodiment, the baffle 3, groove 23, and protrusion 24 are all integrally formed with the cover plate 2, which can be completed in one injection molding process, reducing the number of parts, reducing assembly steps and production costs, and improving the consistency and sealing reliability of the finished product.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the present invention 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 of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A semi-concealed handle structure that facilitates glue injection and sealing, characterized in that, The device includes a handle body and a cover plate fixed to the outside of the handle body by screws. The cover plate has a ramp structure for assembly guidance in the middle and an annular glue injection groove around the periphery of the cover plate. The ramp structure divides the annular glue injection groove into a bottom area, a ramp area, and a top area. The bottom area is parallel to the top area. The ramp area is located between the top area and the bottom area. A baffle is provided in the ramp area. The baffle is perpendicular to the bottom area.

2. The semi-concealed handle structure for easy glue injection and sealing according to claim 1, characterized in that, The baffles are provided in multiple ways and are arranged at intervals along the inclined direction of the slope area, forming a liquid buffer cavity between adjacent baffles.

3. The semi-concealed handle structure for easy glue injection and sealing according to claim 2, characterized in that, The height of the baffle changes in a stepped manner along the slope direction, with the baffle height near the bottom of the slope being lower than that near the top of the slope.

4. The semi-concealed handle structure for easy glue injection and sealing according to claim 3, characterized in that, The top surface of the baffle is inclined, and the inclination angle is consistent with the inclination angle of the slope area.

5. A semi-concealed handle structure for easy glue injection sealing according to any one of claims 2-4, characterized in that, The spacing between adjacent baffles is equal, and the height difference between adjacent baffles is equal.

6. The semi-concealed handle structure for easy glue injection and sealing according to claim 1, characterized in that, The bottom of the annular glue injection groove is provided with a groove.

7. The semi-concealed handle structure for easy glue injection and sealing according to claim 6, characterized in that, The depth of the groove is 1 / 4 to 1 / 3 of the total depth of the annular injection groove.

8. The semi-concealed handle structure for easy glue injection and sealing according to claim 1, characterized in that, The annular injection groove has a protrusion at the top of its slope, and the height of the protrusion is not greater than the depth of the annular injection groove.

9. A semi-concealed handle structure for easy glue injection and sealing according to claim 8, characterized in that, The height of the protrusion is 1 / 3 to 1 / 2 of the depth of the glue injection groove.

10. A semi-concealed handle structure for easy glue injection and sealing according to claim 1, characterized in that, The baffle and the cover are integrally formed.

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