An injection molded workpiece having a nut abutment notch

Abstract

The utility model relates to injection molding work piece technical field, concretely is a kind of injection molding work piece with nut abutting notch, including injection molding part, several nut bodies are embedded in the injection molding part, the outer circumferential surface of nut body is fixedly connected with extension ring, the extension ring is fixedly connected with injection molding part, the both sides of extension ring are fixedly connected with several convex strips, the convex strip is fixedly connected with injection molding part, and the cross section of convex strip is trapezoidal.The utility model, by setting extension ring on the outer circumferential surface of nut body, molten plastic can be wrapped the surface of extension ring when injection molding, when nut body is subjected to axial tension, extension ring and surrounding plastic form abutment, disperse the direct action of tension to contact interface, avoid nut body to come out, greatly improve the connection strength, improve the use reliability of injection molding work piece with nut abutting notch, expand the scope of application.

Description

Technical Field

[0001] This utility model relates to the field of injection molded workpiece technology, and in particular to an injection molded workpiece with a nut abutment groove. Background Technology

[0002] Injection-molded parts are manufactured using the injection molding process. With their core advantages of high-efficiency mass production and the ability to be molded into complex shapes, they have become essential components in fields such as electronics, automobiles, and industrial equipment. To improve the connection strength of injection-molded parts, the industry often uses insert injection molding to produce specialized injection-molded parts with nut-fitting grooves. This involves precisely embedding the nut into a pre-set groove during the injection molding process, allowing the part to be directly fastened to a matching bolt via the built-in nut, significantly avoiding the problem of stripping easily when directly tapping plastic threads.

[0003] However, in order to meet the needs of lightweight and miniaturized assembly, smaller diameter nuts are required in some scenarios. These small nuts have limited contact area with the plastic matrix. When the workpiece is subjected to large tensile force or vibration load, the nut is prone to detach from the plastic groove, resulting in connection failure. This seriously affects the reliability and applicability of injection molded workpieces with nut abutment grooves.

[0004] Therefore, an injection molded part with a nut abutment groove is proposed. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of small-sized nuts having limited contact area with the plastic substrate, which can easily cause the nut to detach from the plastic groove and lead to connection failure when the workpiece is subjected to large tensile force or vibration load. Therefore, this invention proposes an injection-molded workpiece with a nut abutting groove.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an injection molded workpiece with a nut abutment groove, comprising an injection molded part, wherein a plurality of nut bodies are embedded in the injection molded part, and an extension ring is fixedly connected to the outer circumferential surface of the nut body, and the extension ring is fixedly connected to the injection molded part.

[0007] The effect achieved by the above-mentioned components is as follows: by setting an extension ring on the outer circumference of the nut body, the molten plastic will wrap around the surface of the extension ring during injection molding. When the nut body is subjected to axial tensile force, the extension ring and the surrounding plastic form an abutment, dispersing the direct effect of the tensile force on the contact interface, preventing the nut body from coming off, greatly improving the connection strength, improving the reliability of injection molded workpieces with nut abutment grooves, and expanding the scope of application.

[0008] Preferably, a plurality of protruding strips are fixedly connected to both sides of the extension ring, the protruding strips are fixedly connected to the injection molded part, and the cross-section of the protruding strips is trapezoidal.

[0009] The effect achieved by the above-mentioned components is that the protrusions can restrict the position of the extension ring, thereby preventing the extension ring from becoming loose in the injection molded part.

[0010] Preferably, the surface of the extension ring is provided with a plurality of clearance holes, and the plurality of clearance holes are arranged in a radial array along the extension ring.

[0011] The effect achieved by the above components is that the radial array of clearance holes on the surface of the extension ring will be filled with molten plastic during the injection molding process, thereby firmly confining the extension ring inside the injection molded part and further preventing the extension ring from slipping.

[0012] Preferably, flexible pads are fixedly connected to both sides of the injection molded part, and the side of the flexible pad away from the injection molded part has a wavy structure.

[0013] The effects achieved by the above components are as follows: the wavy surface of the flexible pad can fit against the contact surface of the mating components; the wavy structure generates elastic deformation during assembly, which compensates for minor unevenness of the mating surface to increase the fit and seal, avoids hard contact that causes component wear, and extends service life.

[0014] Preferably, a plurality of connecting blocks are fixedly connected to the side of the flexible pad near the injection molded part, and the connecting blocks are fixedly connected to the injection molded part, and the connecting blocks are in the form of a frustum structure.

[0015] The effect achieved by the above components is as follows: the connecting block is embedded inside the injection molded part during injection molding, and the frustum structure forms a reverse clamping. When the flexible pad is subjected to tensile force, the side of the frustum comes into contact with the injection molded part, preventing the connecting block from coming out.

[0016] Preferably, the outer circumferential surface of the nut body is provided with a plurality of upper and lower inclined grooves.

[0017] The effect achieved by the above components is that during injection molding, the plastic fills the groove to form a "plastic protrusion" that matches the upper and lower inclined grooves, further restricting the position of the nut body.

[0018] Preferably, the upper and lower inclined grooves have opposite inclination directions.

[0019] The effect achieved by the above components is that when the bolt is screwed into or out of the nut body, the upper and lower inclined grooves cooperate to stably restrict the position of the nut body.

[0020] Compared with the prior art, the advantages and positive effects of this utility model are as follows: In this invention, by setting an extension ring on the outer circumferential surface of the nut body, the molten plastic will wrap around the surface of the extension ring during injection molding. When the nut body is subjected to axial tensile force, the extension ring will form an abutment with the surrounding plastic, dispersing the direct effect of the tensile force on the contact interface, preventing the nut body from coming off, greatly improving the connection strength, improving the reliability of injection molded workpieces with nut abutment grooves, and expanding the scope of application. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial cross-sectional structural diagram of the injection molded part of this utility model; Figure 3 This is a partial disassembled structural diagram of the injection molded part of this utility model; Figure 4 This is a schematic diagram of the structure of the nut body of this utility model; Figure 5 This is a cross-sectional structural diagram of the nut body of this utility model.

[0022] Illustrations: 1. Injection molded part; 2. Nut body; 3. Extension ring; 4. Raised strip; 5. Relief hole; 6. Flexible pad; 7. Connecting block; 8. Upper inclined groove; 9. Lower inclined groove. Detailed Implementation

[0023] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0025] like Figures 1-5 As shown, this utility model provides an injection molded workpiece with a nut abutment groove, including an injection molded part 1, in which a plurality of nut bodies 2 are embedded. An extension ring 3 is fixedly connected to the outer circumferential surface of the nut body 2. The extension ring 3 is fixedly connected to the injection molded part 1. By setting the extension ring 3 on the outer circumferential surface of the nut body 2, the molten plastic will wrap around the surface of the extension ring 3 during injection molding. When the nut body 2 is subjected to axial tensile force, the extension ring 3 forms an abutment with the surrounding plastic, dispersing the direct effect of the tensile force on the contact interface, preventing the nut body 2 from coming off, greatly improving the connection strength, improving the reliability of the injection molded workpiece with the nut abutment groove, and expanding the scope of application.

[0026] like Figures 2-5 As shown, several protrusions 4 are fixedly connected to both sides of the extension ring 3. The protrusions 4 are fixedly connected to the injection molded part 1. The cross-section of the protrusions 4 is trapezoidal. The protrusions 4 can restrict the position of the extension ring 3, thereby preventing the extension ring 3 from becoming loose in the injection molded part 1. Several clearance holes 5 are opened on the surface of the extension ring 3. The clearance holes 5 are arranged in a radial array along the extension ring 3. The radial array of clearance holes 5 on the surface of the extension ring 3 will be filled by molten plastic during the injection molding process, thereby firmly restricting the extension ring 3 inside the injection molded part 1 and further preventing the extension ring 3 from sliding. Flexible pads 6 are fixedly connected to both sides of the injection molded part 1. The side of the flexible pad 6 away from the injection molded part 1 has a wave structure. The wave-shaped surface of the flexible pad 6 can fit with the contact surface of the mating parts. The wave structure generates elastic deformation during assembly, which compensates for the slight unevenness of the mating surface to increase the fit and seal, and avoids hard contact that causes wear of the parts and extends the service life.

[0027] like Figures 2-5 As shown, a number of connecting blocks 7 are fixedly connected to the side of the flexible pad 6 near the injection molded part 1. The connecting blocks 7 are fixedly connected to the injection molded part 1. The connecting blocks 7 have a frustum structure. When the connecting blocks 7 are injected, they are embedded inside the injection molded part 1. The frustum structure also forms a reverse clamping. When the flexible pad 6 is subjected to tensile force, the side of the frustum abuts against the injection molded part 1, preventing the connecting blocks 7 from coming out. A number of upper inclined grooves 8 and lower inclined grooves 9 are opened on the outer circumferential surface of the nut body 2. When the nut body 2 is injected, the plastic fills the grooves to form "plastic protrusions" that match the upper inclined grooves 8 and lower inclined grooves 9, further restricting the position of the nut body 2. The upper inclined grooves 8 and lower inclined grooves 9 are inclined in opposite directions. When the bolt is screwed into the nut body 2 or screwed out of the nut body 2, the upper inclined grooves 8 and lower inclined grooves 9 cooperate to stably restrict the position of the nut body 2.

[0028] The overall working principle is as follows: by setting an extension ring 3 on the outer circumference of the nut body 2, the molten plastic will wrap around the surface of the extension ring 3 during injection molding. When the nut body 2 is subjected to axial tensile force, the extension ring 3 will come into contact with the surrounding plastic, dispersing the direct effect of the tensile force on the contact interface and preventing the nut body 2 from coming off. The trapezoidal protrusions 4 on both sides of the extension ring 3 will be completely wrapped by the plastic during injection molding. When the nut body 2 is connected and tightened with the bolt, the protrusions 4 can restrict the position of the extension ring 3, thereby preventing the extension ring 3 from loosening in the injection molded part 1. The radial array of clearance holes 5 on the surface of the extension ring 3 will be filled by the molten plastic during injection molding, thereby firmly restricting the extension ring 3 inside the injection molded part 1 and further preventing the extension ring 3 from sliding.

[0029] The flexible pads 6 on both sides of the injection molded part 1 have a wavy surface that can fit against the contact surface of the mating parts. The wavy structure generates elastic deformation during assembly, which compensates for minor unevenness of the mating surface to increase the fit and seal, avoids hard contact that causes wear of the parts, and extends the service life. The connecting block 7 is embedded inside the injection molded part 1 during injection molding. The frustum structure of the connecting block 7 can form a reverse clamping. When the flexible pad 6 is subjected to tensile force, the side of the frustum abuts against the injection molded part 1, preventing the connecting block 7 from coming out. The upper inclined groove 8 and the lower inclined groove 9 on the outer circumference of the nut body 2 have opposite inclination directions. During injection molding, the plastic fills the groove to form a "plastic protrusion" that matches the upper inclined groove 8 and the lower inclined groove 9, further restricting the position of the nut body 2. When the bolt is screwed into or out of the nut body 2, the upper inclined groove 8 and the lower inclined groove 9 cooperate to stably restrict the position of the nut body 2.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An injection-molded workpiece having a nut abutment groove, characterized in that: The injection molded part (1) is provided with a plurality of nut bodies (2) embedded therein. An extension ring (3) is fixedly connected to the outer circumferential surface of the nut body (2). The extension ring (3) is fixedly connected to the injection molded part (1).

2. The injection molded workpiece with a nut abutment groove according to claim 1, characterized in that: Several protrusions (4) are fixedly connected to both sides of the extension ring (3). The protrusions (4) are fixedly connected to the injection molded part (1). The cross-section of the protrusions (4) is trapezoidal.

3. The injection molded workpiece with a nut abutment groove according to claim 1, characterized in that: The surface of the extension ring (3) is provided with a plurality of clearance holes (5), and the plurality of clearance holes (5) are arranged in a radial array along the extension ring (3).

4. The injection molded workpiece with a nut abutment groove according to claim 1, characterized in that: Flexible pads (6) are fixedly connected to both sides of the injection molded part (1), and the side of the flexible pad (6) away from the injection molded part (1) has a wave structure.

5. The injection molded workpiece with a nut abutment groove according to claim 4, characterized in that: The flexible pad (6) is fixedly connected to a number of connecting blocks (7) on the side near the injection molded part (1). The connecting blocks (7) are fixedly connected to the injection molded part (1) and the connecting blocks (7) are in the form of a frustum.

6. The injection molded workpiece with a nut abutment groove according to claim 1, characterized in that: The outer circumferential surface of the nut body (2) is provided with several upper inclined grooves (8) and lower inclined grooves (9).

7. The injection molded workpiece with a nut abutment groove according to claim 6, characterized in that: The upper inclined groove (8) and the lower inclined groove (9) are inclined in opposite directions.

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