Automobile engine hood sealing strip
Through the non-equal thickness cross-section design and hollow structure of the automobile hood sealing strip, the problem of poor deformation resistance of existing sealing strips is solved, and good dustproof, waterproof performance and deformation resistance are achieved.
Patent Information
- Application Number
- CN202421272487.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-05
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-06-05
AI Technical Summary
The existing automobile hood sealing strips are not good enough in cross-section and have poor deformation resistance, resulting in a degradation in dust and waterproof performance, affecting the cabin parts.
Using a non-equal thickness cross-section design, the seal strip is made of EPDM rubber. The thickness of the inner and outer parts gradually thickens, the inner part is arc-shaped, the outer part gradually moves away from the hood, and the bottom is connected to the plastic parts by nylon snap-ins. , form a hollow structure to improve deformation ability.
The weakest part of the seal strip is first deformed after being pressed down, and the outer side is bulging and fit, and the shape is restored after releasing internal stress, enhancing the deformation resistance, good support for material thickness, maintaining the C-shaped rebound, and significantly improving sealing performance.
Smart Images
Figure CN222346939U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobile sealing, in particular to an automobile engine hood sealing strip. Background Art
[0002] At present, there is a gap between the hood and the front face of most cars. Usually a sealing strip is added between the two to prevent dust and water, while covering the gap and making it aesthetically pleasing.
[0003] However, most of the existing automobile hood sealing strips have poor cross-sectional design and have poor deformation resistance after being subjected to long-term heavy pressure on the hood. After a long time, they are not easy to rebound after deformation, which reduces the dust and water resistance of the sealing strip and affects the cabin parts. Utility Model Content
[0004] The purpose of the utility model is to improve and innovate the shortcomings and problems existing in the background technology, and to provide a car hood sealing strip, which adopts a design of non-uniform thickness cross-section to improve the deformation resistance of the sealing strip.
[0005] A sealing strip for an automobile engine hood, wherein the sealing strip is installed in a gap between the automobile engine hood and the front face of the automobile, wherein the middle portion of the sealing strip is hollowed out, and the sealing strip comprises a sealing strip top, a sealing strip inner portion, a sealing strip outer portion and a sealing strip bottom, wherein the material thickness of the sealing strip inner portion and the sealing strip outer portion gradually increases from one end close to the sealing strip top to one end close to the sealing strip bottom, wherein the sealing strip inner portion and the sealing strip outer portion are both arc-shaped, wherein the middle portion of the sealing strip inner portion is bent toward the hollowed-out portion of the sealing strip, and the sealing strip outer portion gradually moves away from the automobile engine from one end close to the sealing strip top to one end close to the sealing strip bottom.
[0006] A further solution is that the sealing strip is made of EPDM rubber.
[0007] A further solution is that the bottom of the sealing strip is installed on the plastic part of the front face of the car through a connecting piece.
[0008] A further solution is that the connector is configured as a buckle, the buckle is provided with barbs at intervals in the height direction, the top of the buckle protrudes outward to form a protrusion, and the buckle is clamped to the bottom of the sealing strip via the barbs and the protrusion.
[0009] A further solution is that the plastic part is connected to the buckle through adjacent barbs.
[0010] A further solution is that the buckle is made of nylon.
[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: after the automobile hood of the utility model is pressed down, the material thickness from the top to the bottom of the sealing strip gradually increases, and the top of the weakest sealing strip is first pressed down and deformed, and the profile of the inner side of the sealing strip is deformed toward the hollow part; while the outer side of the sealing strip bulges outward and deforms, fitting with the lower surface of the hood, so that the sealing strip plays a good role in dustproof and waterproof. When the hood is opened after pressing the sealing strip for a long time, the internal stress generated by the deformation of the inner side profile of the sealing strip toward the hollow part is released, and the sealing strip can be well restored to its original profile, which greatly improves the anti-deformation ability; in addition, the material thickness from the top to the bottom of the sealing strip gradually increases, so that the bottom of the sealing strip has good support, and the sealing strip will not be flattened by the automobile hood; and the difference in material thickness allows the inner side of the sealing strip to maintain a C shape after deformation, which is also beneficial to the rebound of the deformed sealing strip. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0013] Figure 1 A schematic diagram of the cross-sectional structure of the engine cover, the sealing strip and the plastic part provided in the embodiment of the utility model;
[0014] Figure 2 A schematic diagram of the cross-sectional structure of the sealing strip and the buckle provided in the embodiment of the utility model;
[0015] Reference numerals: sealing strip 1 , buckle 2 , engine cover 3 , plastic part 4 , sealing strip top 101 , sealing strip inner part 102 , sealing strip outer part 103 , sealing strip bottom 104 , barb 201 , protrusion 202 . DETAILED DESCRIPTION
[0016] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.
[0017] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.
[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific implementations and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.
[0019] See also Figure 1-Figure 2 The utility model provides a sealing strip for an automobile engine hood. The sealing strip 1 is installed between a gap between an automobile engine hood 3 and a front face of the automobile. The middle of the sealing strip 1 is hollowed out, and the sealing strip 1 is made of EPDM rubber.
[0020] The sealing strip 1 comprises a sealing strip top 101, a sealing strip inner portion 102, a sealing strip outer portion 103 and a sealing strip bottom 104. The material thickness of the sealing strip inner portion 102 and the sealing strip outer portion 103 gradually increases from one end close to the sealing strip top 101 to one end close to the sealing strip bottom 104, and the cross-sections of the sealing strip inner portion 102 and the sealing strip outer portion 103 are both arc-shaped; wherein the middle portion of the sealing strip inner portion 102 is bent toward the hollow portion of the sealing strip 1, so that the cross-section of the sealing strip inner portion 102 is C-shaped; the sealing strip outer portion 103 gradually moves away from the automobile engine from one end close to the sealing strip top 101 to one end close to the sealing strip bottom 104.
[0021] It should be noted that Figure 1 and Figure 2 All of them are schematic diagrams of cross-sectional structures in the ZX plane in the automobile body coordinate system; wherein, in the automobile body coordinate system, the X direction is the length direction of the automobile, the Y direction is the width direction, and the Z direction is the height direction.
[0022] The bottom 104 of the sealing strip is mounted on the plastic part 4 of the front face of the car through a connector. Specifically, the connector is configured as a buckle 2, which is made of nylon. The buckles 2 are installed at intervals on the bottom 104 of the sealing strip, and barbs 201 are arranged at intervals in the height direction of the buckles 2. The top of the buckles 2 protrude outward to form a protrusion 202. The buckles 2 are clamped on the bottom 104 of the sealing strip through the barbs 201 and the protrusion 202. The plastic part 4 of the front face of the car is clamped on the buckles 2 through adjacent barbs 201. During the assembly process of the buckle 2 and the plastic part 4, the plastic part 4 squeezes the barb 201 at the bottom end of the buckle 2, causing the barb 201 at the bottom end of the buckle 2 to shrink inward, so that the barb 201 at the bottom end of the buckle 2 can pass through the limiting hole on the plastic part 4. After passing through the limiting hole on the plastic part 4, the barb 201 at the bottom end of the buckle 2 is reset, so that the buckle 2 is clamped on the plastic part 4 through the adjacent barbs 201.
[0023] The working principle of the utility model is as follows: after the hood 3 of the car is pressed down, the material thickness from the top 101 of the sealing strip to the bottom 104 of the sealing strip gradually increases, and the top 101 of the weakest sealing strip is first pressed down and deformed, and the profile of the inner side 102 of the sealing strip is deformed toward the hollow part; while the outer side 103 of the sealing strip bulges outward and deforms, fitting with the lower surface of the hood 3, so that the sealing strip 1 plays a good role in dustproof and waterproof. When the hood 3 is opened after pressing the sealing strip 1 for a long time, the internal stress generated by the profile of the inner side 102 of the sealing strip deforming toward the hollow part is released, and the sealing strip 1 can be well restored to the original profile, which greatly improves the anti-deformation ability; in addition, the material thickness from the top 101 of the sealing strip to the bottom 104 of the sealing strip gradually increases, so that the bottom 104 of the sealing strip has good support, and the sealing strip 1 will not be flattened by the hood 3 of the car; and the difference in material thickness allows the inner side 101 of the sealing strip to maintain a C shape after deformation, which is also beneficial to the rebound of the deformed sealing strip 1.
[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the utility model.
[0025] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.
[0026] Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Mentioning "embodiment" in this article means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present embodiment application. The appearance of this phrase in various positions in the specification is not necessarily the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It can be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.
[0027] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. A sealing strip for an automobile hood, characterized in that: The sealing strip (1) is installed in the gap between the hood (3) of the automobile and the front face of the automobile. The middle part of the sealing strip (1) is hollowed out. The sealing strip (1) comprises a sealing strip top (101), a sealing strip inner part (102), a sealing strip outer part (103) and a sealing strip bottom (104). The material thickness of the sealing strip inner part (102) and the sealing strip outer part (103) gradually increases from one end close to the sealing strip top (101) to one end close to the sealing strip bottom (104). The sealing strip inner part (102) and the sealing strip outer part (103) are both arc-shaped. The middle part of the sealing strip inner part (102) is bent toward the hollowed-out part of the sealing strip (1). The sealing strip outer part (103) gradually moves away from the automobile engine from one end close to the sealing strip top (101) to one end close to the sealing strip bottom (104).
2. The automobile hood sealing strip according to claim 1, characterized in that: The sealing strip (1) is made of EPDM rubber.
3. The automobile hood sealing strip according to claim 1, characterized in that: The sealing strip bottom (104) is mounted on the plastic part (4) of the front face of the automobile via a connecting piece.
4. The automobile hood sealing strip according to claim 3, characterized in that: The connecting piece is configured as a buckle (2), the buckle (2) is provided with barbs (201) at intervals in the height direction, the top end of the buckle (2) protrudes outwards to form a protruding portion (202), and the buckle (2) is clamped to the bottom (104) of the sealing strip via the barbs (201) and the protruding portion (202).
5. The automobile hood sealing strip according to claim 4, characterized in that: The plastic part (4) is clamped onto the buckle (2) via adjacent barbs (201).
6. The automobile hood sealing strip according to claim 4, characterized in that: The buckle (2) is made of nylon.