Fabricated outer water cutting part capable of preventing bright strip from loosening

Abstract

The utility model provides an assembly type outer water cutting strip capable of preventing a bright strip from loosening, and belongs to the technical field of automobile parts. The two sides of the bright strip are clamped in the clamping grooves in the two sides of the outer surface of the water cutting body through the clamping edges, and the two sets of pre-tightening supporting strips are arranged on the outer surface of the water cutting body and located between the two clamping grooves to push and abut against the side wall, close to the water cutting body, of the bright strip, so that the bright strip is clamped more compactly, pre-tightening force is provided for installation of the bright strip, and the installation efficiency of the bright strip is improved. In addition, the ends of the two pre-tightening supporting strips are inclined in the opposite directions, so that the two ends of the two pre-tightening supporting strips can correspond to the clamping edges on the two sides of the bright strip respectively, reverse oblique thrust is provided for the two clamping edges of the two pre-tightening supporting strips respectively, the clamping edges on the two sides of the bright strip can bear oblique pre-tightening force, the two clamping edges can tension the groove wall of the clamping groove, and the bright strip is prevented from being loosened. The problem of installation gaps caused by machining errors, installation requirements and machining process limitation is solved, the problem of looseness of the installed bright strip is avoided, and therefore the problem of abnormal sound caused by looseness is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to an assembled outer water cut for preventing the bright strip from loosening. Background Technique

[0002] As a main structure on the automobile door, the outer water cut is usually installed on the outer sides of the door and the window to improve the performance of dust prevention, waterproofing, noise prevention, etc. At the same time, the beauty of the vehicle can also be improved by installing structures such as bright strips. Therefore, improving its quality is the key to improving the use performance of the automobile.

[0003] At present, the existing outer water cuts on the market, such as an automobile outer water cut sealing strip and its co-extrusion process disclosed in patent CN110722965A, the outer water cut sealing strip is composed of a metal skeleton and a coated soft rubber. After the metal skeleton is wrapped by the coated soft rubber, they are extruded and formed together. At this time, the part of the metal skeleton facing the outside of the vehicle constitutes a decorative bright surface. In addition, such as a high-brightness black outer water cut structure disclosed in patent CN113276647A, the outer water cut composed of an outer water cut body and an outer water cut lip, the inner part of the outer water cut body is provided with a metal skeleton, there is a clamping structure at the lower part of the outer water cut body, and an aluminum alloy bright strip is externally buckled on the outer surface of the outer water cut body. It can be seen from this that the existing outer water cuts all adopt an internal metal skeleton, an outer coating of soft rubber, and then a bright strip is arranged on the soft rubber. In addition, there are two installation methods for the existing bright strips externally arranged on the soft rubber. One is direct integral extrusion molding, and the other is an assembled structure with later clamping. Since the bright strip formed by integral extrusion molding cannot be replaced separately after being damaged later, the whole outer water cut needs to be replaced, and the cost is relatively high. While the bright strip installed by the later clamping method can be replaced separately after being damaged, and the use cost is lower. However, for the existing assembled outer water cut with a bright strip installed by the clamping method, grooves are usually opened on both sides of the soft rubber respectively. At the same time, the clamping edges formed by bending both sides of the bright strip are clamped into the corresponding grooves on both sides to realize the buckling installation of the bright strip. Due to processing errors, processing technology limitations during the processing process, and to ensure smooth buckling during installation, there is a fit tolerance between the groove and the clamping edge, resulting in easy gaps and loosening problems between the clamping edge and the groove after the bright strip is buckled, thus easily generating abnormal noises during the running of the vehicle and affecting the use experience. Summary of the Invention

[0004] In view of the above problems existing in the prior art, the present invention aims to provide an assembled outer water cut-off that prevents the bright strip from loosening. A pre-tightening support strip is provided on one side of the water cut-off body where the bright strip is arranged. There are two groups of pre-tightening support strips, and both are located between the two card slots. At the same time, the ends of the two groups of pre-tightening support strips facing away from the water cut-off body are inclined in opposite directions. By pushing against the bright strip with the inclined ends of the two groups of pre-tightening support strips, the bright strip is buckled onto a wall of the water cut-off body, thereby pushing the bright strip away from the water cut-off body. As a result, the clamping edges on both sides of the bright strip can be tightly clamped in the card slots. At the same time, the two groups of pre-tightening support strips with ends inclined in opposite directions can apply opposite thrusts to both sides of the bright strip, so that the clamping edges on both sides of the bright strip can have corresponding pre-tightening forces to tighten, effectively preventing the problem that the bright strip is prone to looseness after installation due to processing errors, installation requirements, and processing technology limitations, and preventing the occurrence of abnormal noises during use.

[0005] The specific technical solution is as follows:

[0006] An assembled outer water cut-off that prevents the bright strip from loosening, including a water cut-off body and a bright strip. The bright strip is buckled and installed on the outer surface of the water cut-off body. It has the following characteristics: on both sides of the outer surface of the water cut-off body, card slots are opened along its length direction. At the same time, after the two sides of the bright strip are bent, two clamping edges are formed, and the two clamping edges are respectively and correspondingly clamped with the two card slots. And, on the outer surface of the water cut-off body and between the two card slots, two groups of pre-tightening support strips are provided. The ends of the two groups of pre-tightening support strips facing away from the water cut-off body are inclined in opposite directions. At the same time, the inclined ends of the two groups of pre-tightening support strips facing in opposite directions both abut against one side wall of the bright strip close to the water cut-off body.

[0007] In the above-mentioned assembled outer water cut-off that prevents the bright strip from loosening, the water cut-off body includes a door sheet metal clamping groove, and a tightening lip is arranged in the door sheet metal clamping groove. One end of the tightening lip connected to the water cut-off body is located between the two pre-tightening support strips.

[0008] In the above-mentioned assembled outer water cut-off that prevents the bright strip from loosening, the inclined end of each pre-tightening support strip protrudes outside the notch of the card slot, and the protruding distance range is 2-4 mm.

[0009] In the above-mentioned assembled outer water cut-off that prevents the bright strip from loosening, sliding strips are arranged at the notch of each card slot on the water cut-off body close to the pre-tightening support strip.

[0010] In the above-mentioned assembled outer water cut-off that prevents the bright strip from loosening, the sliding strip is made of hard plastic.

[0011] In the above-mentioned assembled outer water cut-off that prevents the bright strip from loosening, the sliding strip and the water cut-off body are of an integrally injection-molded structure.

[0012] The above-mentioned assembled external water-cutting for preventing the bright strip from loosening, wherein a metal frame is built into the water-cutting body, and the metal frame is surrounded in the groove wall of the door sheet metal clamping groove.

[0013] In the above-mentioned assembled external water-cutting for preventing the bright strip from loosening, the metal frame is made of aluminum, and the metal frame is formed by bending a strip-shaped structure.

[0014] The above-mentioned assembled external water-cutting device for preventing the bright strip from loosening has a plurality of inner lips arranged on the inner surface of the water-cutting body, and velvet belts arranged on the inner lips.

[0015] The positive effects of the above technical solution are:

[0016] The above-mentioned assembled external water-cutting for preventing the bright strip from loosening is realized by providing card grooves on both sides of the outer surface of the water-cutting body to cooperate with the two card edges formed by bending the two sides of the bright strip to realize buckling and card connection. At the same time, two groups of pre-tightening stays are provided on the outer surface of the water-cutting body and between the two card grooves, and The two groups of pre-tightening struts are inclined in opposite directions with one end away from the water-cut body, and when the bright strip is buckled and clamped on the water-cut body, the ends of the two groups of pre-tightening struts inclined in opposite directions both abut against a side wall of the bright strip close to the water-cut body. The two groups of pre-tightening struts push the bright strip in opposite directions, so that the bright strip is subjected to a thrust in the direction away from the water-cut body, thereby achieving pre-tightening of the bright strip after installation. At the same time, the ends of the two groups of pre-tightening struts are inclined in opposite directions, corresponding to the two card edges of the bright strip respectively, so that the two card edges of the bright strip can have corresponding pre-tightening force to tighten, thereby effectively preventing the installation gap problem caused by processing errors, installation requirements and processing technology limitations, and effectively avoiding the problem of loosening of the bright strip after installation. The installation tightness is better and the problem of abnormal noise during use is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional view of an embodiment of an assembled external water-cutting device for preventing bright strips from loosening according to the utility model;

[0018] Figure 2 It is a cross-sectional view of a water-cut body according to a preferred embodiment of the utility model.

[0019] In the attached figure: 1. Water-cut body; 11. Card slot; 12. Pre-tightening support strip; 13. Door sheet metal card slot; 14. Tightening lip; 15. Inner lip; 2. Bright strip; 21. Card edge; 3. Sliding strip; 4. Metal frame; 5. Velvet belt. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the following embodiments are combined with the attached Figure 1 To Attachment Figure 2The technical solution provided by the utility model is described in detail, but the following content is not intended to limit the utility model.

[0021] Figure 1 It is a cross-sectional view of an embodiment of an assembled external water-cutting device for preventing bright strips from loosening according to the utility model; Figure 2 This is a cross-sectional view of a water-cut body of a preferred embodiment of the utility model. Figure 1 and Figure 2 As shown, the assembled external water-cut for preventing the bright strip from loosening provided in this embodiment comprises: a water-cut body 1 and a bright strip 2. At this time, the bright strip 2 is buckled and clamped on the outer surface of the water-cut body 1.

[0022] Specifically, both sides of the outer surface of the water-cut body 1 are provided with card grooves 11 along the length direction thereof, so that the card grooves 11 can be located on both sides of the length direction of the water-cut body 1, providing conditions for the subsequent bright strip 2 to cover the outer surface of the water-cut body 1 after buckling and snapping. At the same time, both sides of the bright strip 2 are bent in one direction to form two card edges 21, so that the two card edges 21 are located on the same surface of the bright strip 2. During installation, the two card edges 21 of the bright strip 2 are snapped into the two card grooves 11 of the water-cut body 1 in a one-to-one correspondence. The installer only needs to press the bright strip 2 so that the two card edges 21 are respectively snapped into the two card grooves 11, thereby realizing the assembled installation of the bright strip 2 on the water-cut body 1. In addition, two groups of pre-tightening struts 12 are also provided on the outer surface of the water-cut body 1 and between the two card grooves 11. The two groups of pre-tightening struts 12 form an auxiliary support structure on the outer surface of the water-cut body 1 for installing the bright strip 2, which is used for subsequent contact with the bright strip 2 and provides pre-tightening force for the bright strip 2. In addition, each set of pre-tightening struts 12 is arranged along the length direction of the water-cut body 1, so that the pre-tightening struts 12 can adapt to the length of the bright strip 2, ensuring that all parts of the length direction of the bright strip 2 can be tightened, thereby improving the stability of the bright strip 2 after installation. In addition, the two groups of pre-tightening struts 12 located on the outer surface of the water-cut body 1 are inclined in opposite directions at one end away from the water-cut body 1. At the same time, the ends of the two groups of pre-tightening struts 12 inclined in opposite directions both abut against the side wall of the bright strip 2 close to the water-cut body 1, so that the two groups of pre-tightening struts 12 can respectively correspond to the clamping edges 21 of the bright strip 2, that is, both clamping edges 21 can have corresponding pre-tightening forces to tighten, and provide oblique thrusts for both sides of the bright strip 2, so that both clamping edges 21 of the bright strip 2 can have corresponding pre-tightening forces to tighten, thereby effectively preventing the installation gap problem caused by external factors such as processing errors, installation requirements and processing technology limitations, and effectively avoiding the bright strip 2 from loosening after installation and causing abnormal noises. The problem further improves the stability and reliability of the bright strip 2 after installation, and improves the user experience of the car.

[0023] More specifically, the water-cut body 1 and the two groups of pre-tightening stays 12 are made of the same material and are integrally injection-molded, which facilitates processing and manufacturing and improves the stability of the two groups of pre-tightening stays 12 when installed on the water-cut body 1.

[0024] More specifically, the water cut body 1 further includes a door sheet metal clamping groove 13. At this time, a part of the lower end of the water cut body 1 between the outer surface and the inner surface is recessed to form the door sheet metal clamping groove 13. A pressing lip 14 is arranged in the door sheet metal clamping groove 13. When the water cut body 1 is installed on the door, the door sheet metal part is inserted into the door sheet metal clamping groove 13. At the same time, the pressing lip 14 presses against the door sheet metal, realizing the stable installation of the water cut body 1 on the door. In addition, one end of the pressing lip 14 connected to the water cut body 1 is located between the two pre-tightening support strips 12, so that when the pressing lip 14 presses against the door sheet metal, the pressing lip 14 can reversely support the part of the water cut body 1 provided with the two pre-tightening support strips 12, improving the support effect of the pre-tightening support strips 12. In addition, the pressing lip 14 being located between the two pre-tightening support strips 12 can enable both of the two pre-tightening support strips 12 to be better supported by the supporting force of the pressing lip 14, avoiding the problem of too large a difference in the clamping force on both sides of the bright strip 2 caused by uneven force, and further ensuring the stability after the installation of the bright strip 2.

[0025] More specifically, the inclined ends of each pre-tightening support strip 12 all protrude outside the notch of the clamping groove 11. Preferably, the distance range of the inclined ends of the pre-tightening support strip 12 protruding outside the notch of the clamping groove 11 is 2-4 mm, and 2.5 mm is selected in this embodiment. This can not only enable the pre-tightening support strip 12 to be deformed under pressure and reversely push the bright strip 2, making the bright strip 2 more tightly clamped on the water cut body 1, but also avoid the problem that the pre-tightening support strip 12 is overly deformed and causes too large a thrust on the bright strip 2, making the clamping edge 21 easily come out of the clamping groove 11. The structural design is more reasonable.

[0026] More specifically, sliding strips 3 are arranged at the notches of each clamping groove 11 on the water cut body 1 and on the side close to the pre-tightening support strip 12. The sliding strips 3 extend from the outside of the notch on one side of the corresponding clamping groove 11 into the notch, that is, the structural strength of the notch of the clamping groove 11 on the water cut body 1 for clamping the clamping edge 21 is increased through the sliding strips 3. It can not only prevent the clamping edge 21 from quickly being clamped into the clamping groove 11 along the sliding strips 3 under extrusion, but also prevent the problem that the clamping edge 21 easily comes out of the clamping groove 11 due to the softness of the notch of the clamping groove 11 during later use. The structural design is more reasonable.

[0027] More specifically, the sliding strips 3 arranged at the notches of the clamping grooves 11 on the water cut body 1 are made of hard plastic, which can provide better structural strength, and at the same time, the manufacturing cost is low, the materials are easy to obtain, and the problem of affecting the vehicle's own weight due to excessive weight can also be avoided.

[0028] More specifically, the sliding strip 3 and the water cut-off body 1 are integrally injection-molded structures, which can be integrally processed and formed. This not only improves the stability and reliability of the sliding strip 3 after installation on the water cut-off body 1, but also improves the processing efficiency and further reduces the processing cost.

[0029] More specifically, a metal skeleton 4 is also built into the water cut-off body 1. At this time, the metal skeleton 4 is surrounded by the inner wall of the door sheet metal clamping groove 13. At this time, the water cut-off body 1 has a built-in metal skeleton 4, and the outside of the metal skeleton 4 is wrapped with soft rubber, which increases the structural strength of the water cut-off body 1 and is not easily deformed, making it more stable after being installed on the door. At the same time, it also maintains the stability of the bright strip 2 after installation, ensuring the aesthetics of the vehicle.

[0030] More specifically, the metal skeleton 4 built into the water cut-off body 1 is made of aluminum, and the metal skeleton 4 is formed by bending a strip-shaped structure, which improves the processing convenience. In addition, it also enables it to have good heat conduction and guiding performance, improves the structural strength and stiffness under the condition of light weight, and can adapt to complex usage environments, avoiding burden on the vehicle.

[0031] More specifically, a number of inner lips 15 are provided on the inner surface of the water cut-off body 1, and a flannelette tape 5 is provided on the inner lips 15. Similarly, the flannelette tape 5 is integrally injection-molded on it during the processing of the water cut-off body 1, which improves the bonding ability of the flannelette tape 5. In addition, the flannelette surface of the flannelette tape 5 faces away from the side of the water cut-off body 1, so that after the subsequent window glass is installed, it can contact the window glass through the flannelette surface to achieve the purposes of wiping water, removing dust, sealing, and reducing noise.

[0032] The assembled outer water cut-off for preventing the bright strip from loosening provided in this embodiment includes a water cut-off body 1 and a bright strip 2; by providing clamping grooves 11 on both sides of the outer surface of the water cut-off body 1, clamping edges 21 that are engaged with the clamping grooves 11 are provided on both sides of the bright strip 2, and two groups of pre-tightening struts 12 are provided on the outer surface of the water cut-off body 1 and located between the two clamping grooves 11 and abut against the side wall of the bright strip 2 close to the water cut-off body 1. The bright strip 2 is pushed by the two pre-tightening struts 12 to make the clamping of the bright strip 2 tighter, providing a pre-tightening force for the installation of the bright strip 2 to prevent the bright strip 2 from loosening. In addition, the ends of the two pre-tightening struts 12 are inclined in opposite directions, so that the two ends of the two pre-tightening struts 12 can respectively correspond to the clamping edges 21 on both sides of the bright strip 2, providing reverse oblique thrusts for the two clamping edges 21 of the bright strip 2 respectively, so that the clamping edges 21 on both sides of the bright strip 2 can be subjected to oblique pre-tightening forces, enabling the clamping edges 21 of the bright strip 2 to tighten the inner wall of the clamping groove 11, effectively preventing installation gap problems caused by processing errors, installation requirements, and processing technology limitations, avoiding the loosening problem of the bright strip 2 after installation, and thus preventing abnormal noise problems caused by loosening.

[0033] The above are only the preferred embodiments of the present utility model, and do not limit the implementation manners and protection scope of the present utility model thereby. For those skilled in the art, it should be realized that all the solutions obtained by equivalent substitutions and obvious changes made by using the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An assembled outer water cut-off for preventing the bright strip from loosening, comprising a water cut-off body and a bright strip, wherein the bright strip is snap-fitted and installed on the outer surface of the water cut-off body, and is characterized in that, include: Both sides of the outer surface of the water-cut body are provided with card grooves along its length direction. At the same time, the two sides of the bright strip are bent to form two card edges, and the two card edges are carded in one-to-one correspondence with the two card grooves. In addition, two groups of pre-tightening struts are provided on the outer surface of the water-cut body and between the two card grooves. The ends of the two groups of pre-tightening struts facing away from the water-cut body are inclined in opposite directions. At the same time, the ends of the two groups of pre-tightening struts inclined in opposite directions both abut against a side wall of the bright strip close to the water-cut body.

2. The prefabricated outer water cut-off for preventing the bright strip from loosening according to claim 1, wherein The water-cut body comprises a door sheet metal snap-in groove, a tightening lip is arranged in the door sheet metal snap-in groove, and one end of the tightening lip connected to the water-cut body is located between the two pre-tightening stays.

3. The prefabricated outer water cut-off for preventing the bright strip from loosening according to claim 1, characterized in that The inclined end of each pre-tightening support bar protrudes out of the notch of the slot, and the protruding distance ranges from 2 to 4 mm.

4. The prefabricated outer water cut-off for preventing the bright strip from loosening according to claim 1, wherein A sliding bar is arranged on the water-cutting body and at a notch on one side of each of the clamping slots close to the pre-tightening support bar.

5. The prefabricated outer water cut-off for preventing the bright strip from loosening according to claim 4, characterized in that, The sliding bar is made of hard plastic.

6. The prefabricated outer water cut-off for preventing the bright strip from loosening according to claim 4 or 5, characterized in that The sliding bar and the water-cut body are an integral injection-molded structure.

7. The prefabricated outer water cut-off for preventing the bright strip from loosening according to claim 2, characterized in that, A metal frame is built into the water-cut body, and the metal frame is surrounded in the groove wall of the door sheet metal clamping groove.

8. The prefabricated outer water cut-off for preventing the bright strip from loosening according to claim 7, characterized in that, The metal frame is made of aluminum, and is formed by bending a strip-shaped structure.

9. The prefabricated outer water cut-off for preventing the bright strip from loosening according to claim 1, characterized in that, A plurality of inner lips are arranged on the inner surface of the water-cut body, and velvet belts are arranged on the inner lips.

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