Waterproof ring for window sash motor

Abstract

The application relates to the technical field of window rocker motor sealing elements, in particular to a waterproof ring for a window rocker motor, which comprises an upper cover body and upper cover rubber, the upper cover body and the upper cover rubber are integrally formed by injection molding, the upper cover body comprises a circular ring part and a clamping foot, the clamping foot is connected with the outer side wall of the circular ring part and extends to one end of the circular ring part, the end of the upper cover rubber, which is away from the clamping foot, is provided with a first straight cylinder part and a conical surface part, the conical surface part is located at the end of the first straight cylinder part, which is away from the clamping foot, the radial dimension of the conical surface part gradually increases from one end of the first straight cylinder part to the other end, and the connecting position of the first straight cylinder part and the conical surface part is provided with a transition round corner; the application reduces the stress at the connecting position of the first straight cylinder part and the conical surface part by arranging the transition round corner, and has the advantages of higher structural strength.

Description

Technical Field

[0001] This application relates to the field of sealing technology for window regulator motors, and more specifically to a waterproof ring for a window regulator motor. Background Technology

[0002] Inside the car door cavity, the motor often faces environmental interference such as humidity fluctuations, liquid splashes, and dust accumulation. As a key sealing component, the structural strength of the waterproof ring directly determines the sealing reliability, which in turn affects the service life and operational safety of the motor. It is a core basic component in the motor protection system.

[0003] A waterproof ring for a window regulator motor is available, comprising a top cover body and a top cover coating. The top cover body and the top cover coating are integrally injection molded. The top cover coating includes a first straight cylindrical portion and a conical portion. One end of the first straight cylindrical portion is connected to the conical portion. However, due to the high local stress concentration between the first straight cylindrical portion and the conical portion, its structural strength is low. The connection between the first straight cylindrical portion and the conical portion is prone to permanent deformation, collapse, or cracking, making it difficult to meet the sealing requirements of a 1-meter water depth under the new standard.

[0004] Therefore, there is a need for a waterproof ring for a window regulator motor with higher structural strength. Summary of the Invention

[0005] The main objective of this application is to provide a waterproof ring for a window regulator motor. The waterproof ring includes a top cover body and a top cover overlay, which are integrally injection molded. The top cover body includes an annular portion and a snap-fit ​​foot. The snap-fit ​​foot connects to the outer wall of the annular portion and extends to one end of the annular portion. The end of the top cover overlay facing away from the snap-fit ​​foot has a first straight cylindrical portion and a conical portion. The conical portion is located at the end of the first straight cylindrical portion facing away from the snap-fit ​​foot. The radial dimension of the conical portion gradually increases from one end of the first straight cylindrical portion to the other end. The connection between the first straight cylindrical portion and the conical portion has a transition fillet. By setting the transition fillet, the stress at the connection between the first straight cylindrical portion and the conical portion is reduced, thereby improving the structural strength at the connection between the first straight cylindrical portion and the conical portion. This reduces the risk of insufficient sealing due to cracking or deformation of the waterproof ring at a predetermined water depth. Compared with the prior art, this has the advantage of higher structural strength.

[0006] Another objective of this application is to provide a waterproof ring for a window regulator motor, wherein the upper cover rubber coating further includes a lower sealing part, the lower sealing part includes an inner ring, a connecting part and an outer ring, the connecting part has a plurality of connecting posts, the upper cover body has a plurality of through holes, the connecting posts pass through the through holes and are fixedly connected to one end of the first straight cylindrical part away from the conical part, and the lower sealing part and the conical part are respectively located at both ends of the upper cover body and connected to each other through the connecting posts.

[0007] To achieve at least one of the above-mentioned objectives, this application provides a waterproof ring for a window regulator motor, wherein the waterproof ring for the window regulator motor comprises: The upper cover body and the upper cover overlay are integrally injection molded. The upper cover body includes a circular ring portion and a snap-fit ​​foot. The snap-fit ​​foot is connected to the outer wall of the circular ring portion and extends to one end of the circular ring portion. The end of the upper cover overlay opposite to the snap-fit ​​foot has a first straight cylindrical portion and a conical portion. The conical portion is located at the end of the first straight cylindrical portion opposite to the snap-fit ​​foot. The radial dimension of the conical portion gradually increases from one end of the first straight cylindrical portion to the other end. The connection between the first straight cylindrical portion and the conical portion has a transition fillet.

[0008] In one or more embodiments of this application, the top cover coating further includes a lower sealing portion, the lower sealing portion including an inner ring, a connecting portion and an outer ring, the connecting portion having a plurality of connecting posts, the top cover body having a plurality of through holes, the connecting posts passing through the through holes and being fixedly connected to one end of the first straight cylindrical portion away from the conical portion.

[0009] In one or more embodiments of this application, the inner ring has a first annular cavity at one end near the conical part, the first annular cavity has a second straight cylindrical part, the second straight cylindrical part has a second annular cavity, the second annular cavity has a vertical cylindrical part, the top of the vertical cylindrical part extends out of the top cavity opening of the second annular cavity by a predetermined distance, and the outer wall of the end of the vertical cylindrical part extending out of the second annular cavity is an arc surface.

[0010] In one or more embodiments of this application, the annular portion has a third annular cavity at one end near the snap-fit ​​foot, the third annular cavity has a first convex ring portion, the center of the first convex ring portion has a central hole, the inner ring passes through the central hole, and the first convex ring portion extends into the first annular cavity.

[0011] In one or more embodiments of this application, the third annular cavity has a plurality of shallow protrusions arranged in an annular array, with a spacer groove between two adjacent shallow protrusions, and the sidewalls between the inner ring and the outer ring and the sidewalls of the connecting portion together forming a through fan-shaped hole, the shallow protrusions extending into the fan-shaped hole, and the connecting portion extending into the spacer groove.

[0012] In one or more embodiments of this application, the outer ring has a fourth annular cavity at the end opposite to the snap-fit ​​foot, and the upper cover body has a second convex ring at the end with the snap-fit ​​foot. The third annular cavity is located between the first convex ring and the second convex ring, and the second convex ring extends into the fourth annular cavity.

[0013] In one or more embodiments of this application, the connection between the annular portion and the snap-fit ​​pin has a socket.

[0014] In one or more embodiments of this application, the top cover rubber coating also has a plurality of pre-tightening bosses, which are located on the outer side of the second convex ring portion.

[0015] In this embodiment, the waterproof ring for the window regulator motor includes a top cover body and a top cover overlay. The top cover body and the top cover overlay are integrally injection molded. The top cover body includes a circular ring portion and a snap-fit ​​foot. The snap-fit ​​foot is connected to the outer wall of the circular ring portion and extends to one end of the circular ring portion. The end of the top cover overlay opposite to the snap-fit ​​foot has a first straight cylindrical portion and a conical portion. The conical portion is located at the end of the first straight cylindrical portion opposite to the snap-fit ​​foot. The radial dimension of the conical portion gradually increases from one end of the first straight cylindrical portion to the other end. The connection between the first straight cylindrical portion and the conical portion has a transition fillet. By setting the transition fillet, the stress at the connection between the first straight cylindrical portion and the conical portion is reduced, thereby improving the structural strength at the connection between the first straight cylindrical portion and the conical portion. This reduces the risk of insufficient sealing due to cracking or deformation of the waterproof ring at a predetermined water depth. Compared with the prior art, it has the advantage of higher structural strength. Attached Figure Description

[0016] These and / or other aspects and advantages of this application will become clearer and more readily understood from the following detailed description of embodiments of this application taken in conjunction with the accompanying drawings, wherein: Figure 1 The figure shows a structural schematic diagram of a waterproof ring for a window retractor motor according to this application; Figure 2 The diagram illustrates the structure of the upper cover body at a certain angle. Figure 3 The diagram illustrates the structure of the upper cover body from another angle; Figure 4 The illustration shows a cross-sectional view of the upper cover body; Figure 5 The diagram illustrates the structure of the top cover with rubber coating at a certain angle; Figure 6 The diagram shows a structural schematic of the top cover being coated with rubber from another angle. Detailed Implementation

[0017] The terms and words used in the following specification and claims are not limited to their literal meaning, but are used solely by the inventors to enable a clear and consistent understanding of this application. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of this application is provided for illustrative purposes only and not for the purpose of limiting the application as defined in the appended claims and their equivalents.

[0018] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0019] While ordinal numbers such as "first," "second," etc., will be used to describe various components, there is no limitation on which components are used herein. The term is used only to distinguish one component from another. For example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component, without departing from the teachings of the utility model concept. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0020] The terminology used herein is for the purpose of describing various embodiments only and is not intended to be limiting. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. It will also be understood that the terms “comprising” and / or “having” as used in this specification specify the presence of the described features, numbers, steps, operations, components, elements or combinations thereof, without excluding the presence or addition of one or more other features, numbers, steps, operations, components, elements or groups thereof.

[0021] Indicative waterproof ring for window regulator motor, see reference. Figures 1 to 6 A waterproof ring for a window regulator motor according to a preferred embodiment of the present invention includes an upper cover body 10 and an upper cover adhesive 20.

[0022] It should be noted that the upper cover body 10 and the upper cover overlay 20 are injection molded as one piece. The upper cover body 10 and the upper cover overlay 20 are preferably made of TPE thermoplastic elastomer. TPE thermoplastic elastomer has the characteristics of aging resistance and oil resistance, which is suitable for the connection and sealing requirements of the window motor end cover and the housing.

[0023] In addition, such as Figure 2 and Figure 3 As shown, the upper cover body 10 includes an annular portion 101 and a snap-fit ​​foot 102. The snap-fit ​​foot 102 is connected to the outer wall of the annular portion 101 and extends to one end of the annular portion 101. The snap-fit ​​foot 102 has a hook at the end opposite to the annular portion 101. It should be noted that the snap-fit ​​foot 102 is used to connect the waterproof ring for the window regulator motor to the external window regulator motor.

[0024] In addition, such as Figure 4As shown, the top cover 20 has a first straight cylindrical portion 201 and a conical portion 202 at the end opposite to the snap-fit ​​foot 102. The conical portion 202 is located at the end of the first straight cylindrical portion 201 opposite to the snap-fit ​​foot 102. The radial dimension of the conical portion 202 gradually increases from one end of the first straight cylindrical portion 201 to the other end. The connection between the first straight cylindrical portion 201 and the conical portion 202 has a transition fillet 203. It should be noted that during installation, the conical connector on the door sheet metal fits against the conical portion 202, improving the sealing at the contact point. By providing the transition fillet 203 between the first straight cylindrical portion 201 and the conical portion 202, excessive stress accumulation at the connection point is prevented, effectively improving the structural strength. Compared with the prior art, it has the advantage of higher structural strength.

[0025] In addition, in this application, preferably, the slope of the conical part 202 is 45°, one end of the transition fillet 203 extends to 3.6 mm from the end of the conical part 202 near the end of the first straight cylindrical part 201, and the other end of the transition fillet 203 extends to 0.5 mm from the end of the first straight cylindrical part 201 near the end of the conical part 202.

[0026] Furthermore, such as Figure 5 and Figure 6 As shown, the upper cover adhesive 20 also includes a lower sealing portion 204, which includes an inner ring 2041, a connecting portion 2042, and an outer ring 2043. The connecting portion 2042 has a plurality of connecting posts 2044, such as... Figure 2 As shown, the upper cover body 10 has a plurality of through holes 103. The connecting post 2044 passes through the through holes 103 and is fixedly connected to one end of the first straight cylindrical part 201 away from the conical part 202. The fixed connection method is injection molding.

[0027] It should be noted that the connecting post 2044 is formed by thermoplastic molding in the through hole 103, thereby connecting the lower sealing part 204 with the first straight cylindrical part 201, and placing the first straight cylindrical part 201 and the lower sealing part 204 at the two ends of the upper cover body 10 respectively.

[0028] Furthermore, to provide a seal at the joint, such as Figure 4 and Figure 5As shown, the inner ring 2041 has a first annular cavity 20411 at one end near the conical part 202. The first annular cavity 20411 has a second straight cylindrical part 20412. The second straight cylindrical part 20412 has a second annular cavity 20413. The second annular cavity 20413 has a vertical cylindrical part 20414. The top of the vertical cylindrical part 20414 extends out of the top cavity opening of the second annular cavity 20413 by a predetermined distance, and the outer wall of the end of the vertical cylindrical part 20414 extending out of the second annular cavity 20413 is an arc surface.

[0029] It should be noted that when the vertical cylindrical part 20414 abuts against the connecting parts of the external door sheet metal, the arc-shaped part of the vertical cylindrical part extends into the hole of the external connecting part.

[0030] Furthermore, to improve the connection strength between the upper cover body 10 and the upper cover adhesive 20, such as... Figure 3 As shown, the annular portion 101 has a third annular cavity 104 at one end near the snap-fit ​​foot 102. The third annular cavity 104 has a first convex ring portion 1041. The center of the first convex ring portion 1041 has a central hole 1042. The inner ring 2041 passes through the central hole 1042, and the first convex ring portion 1041 extends into the first annular cavity 20411.

[0031] In addition, such as Figure 3 As shown, the third annular cavity 104 has a plurality of shallow protrusions 1043 arranged in a ring array. There is a spacer groove 1044 between two adjacent shallow protrusions 1043. The sidewall between the inner ring 2041 and the outer ring 2043 and the sidewall of the connecting part 2042 together form a through fan-shaped hole 2045. The shallow protrusions 1043 extend into the fan-shaped hole 2045, and the connecting part 2042 extends into the spacer groove 1044.

[0032] In addition, such as Figure 5 As shown, the outer ring 2043 has a fourth annular cavity 2046 at the end opposite to the snap-fit ​​pin 102, as... Figure 3 As shown, the upper cover body 10 has a second protruding ring portion 105 at one end of the snap-fit ​​foot 102, and the third annular cavity 104 is located between the first protruding ring portion 1041 and the second protruding ring portion 105, with the second protruding ring portion 105 extending into the fourth annular cavity 2046.

[0033] Furthermore, such as Figure 2 As shown, the connection between the annular portion 101 and the snap-fit ​​foot 102 has an insertion hole 106, so that the protrusion on the external window swing motor can extend into the insertion hole 106, effectively preventing relative rotation between the upper cover body 10 and the upper cover rubber cover 20.

[0034] Furthermore, such as Figure 5 As shown, the top cover rubber coating 20 also has a plurality of pre-tightening bosses 205, which are located on the outside of the second protruding ring portion 105, and the pre-tightening bosses 205 abut against the end of the corresponding snap-fit ​​foot 102 near the ring portion 101.

[0035] It should be noted that when the locking pin 102 is locked with the external window regulator motor, the preload boss 205 is deformed under pressure. The reaction force provided by the deformation will make the hook of the locking pin 102 more securely locked with the locking point of the external window regulator motor.

[0036] In summary, the waterproof ring for the window regulator motor described in the embodiments of this application is explained, which provides advantages such as higher structural strength for the waterproof ring for the window regulator motor.

[0037] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The function and structural principle of the present invention have been shown and explained in the embodiments, and any modifications or variations may be made to the implementation of the present invention without departing from these principles.

Claims

1. A waterproof ring for a window regulator motor, characterized in that: The waterproof ring for the window regulator motor includes The upper cover body and the upper cover overlay are integrally injection molded. The upper cover body includes a circular ring portion and a snap-fit ​​foot. The snap-fit ​​foot is connected to the outer wall of the circular ring portion and extends to one end of the circular ring portion. The end of the upper cover overlay opposite to the snap-fit ​​foot has a first straight cylindrical portion and a conical portion. The conical portion is located at the end of the first straight cylindrical portion opposite to the snap-fit ​​foot. The radial dimension of the conical portion gradually increases from one end of the first straight cylindrical portion to the other end. The connection between the first straight cylindrical portion and the conical portion has a transition fillet.

2. The waterproof ring for a window regulator motor according to claim 1, characterized in that: The upper cover also includes a lower sealing part, which includes an inner ring, a connecting part and an outer ring. The connecting part has a plurality of connecting posts, and the upper cover body has a plurality of through holes. The connecting posts pass through the through holes and are fixedly connected to one end of the first straight cylindrical part away from the conical part.

3. The waterproof ring for a window regulator motor according to claim 2, characterized in that: The inner ring has a first annular cavity at one end near the conical part, a second straight cylindrical part inside the first annular cavity, a second annular cavity inside the second annular cavity, a vertical cylindrical part inside the second annular cavity, the top of the vertical cylindrical part extending out of the top cavity opening of the second annular cavity by a predetermined distance, and the outer wall of the end of the vertical cylindrical part extending out of the second annular cavity is an arc surface.

4. The waterproof ring for a window regulator motor according to claim 3, characterized in that: The annular portion has a third annular cavity at one end near the snap-fit ​​foot. The third annular cavity has a first convex ring portion. The center of the first convex ring portion has a central hole. The inner ring passes through the central hole, and the first convex ring portion extends into the first annular cavity.

5. The waterproof ring for a window regulator motor according to claim 4, characterized in that: The third annular cavity has a plurality of shallow protrusions arranged in a ring array, with a spacer groove between two adjacent shallow protrusions. The sidewalls between the inner ring and the outer ring and the sidewalls of the connecting part together form a through fan-shaped hole. The shallow protrusions extend into the fan-shaped hole, and the connecting part extends into the spacer groove.

6. The waterproof ring for a window regulator motor according to claim 5, characterized in that: The outer ring has a fourth annular cavity at the end opposite to the snap-fit ​​foot, and the upper cover body also has a second convex ring at the end with the snap-fit ​​foot. The third annular cavity is located between the first convex ring and the second convex ring, and the second convex ring extends into the fourth annular cavity.

7. The waterproof ring for a window regulator motor according to claim 6, characterized in that: The connection between the circular part and the snap-fit ​​pin has a socket.

8. The waterproof ring for a window regulator motor according to claim 7, characterized in that: The top cover also has several pre-tightening bosses, which are located on the outside of the second convex ring.

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