Knurled nut with high connection strength
By setting smooth wall sections, patterned sections, and annular groove sections on the outer wall of the knurled nut, and encapsulating it in a plastic part during injection molding, the problems of insufficient torque and high strength in the prior art are solved, and a nut design with high connection strength is achieved.
Patent Information
- Application Number
- CN202423237288.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Existing knurled nuts have insufficient torque and high strength after injection molding, making it difficult to meet the requirements for high tensile strength.
The outer wall of the knurled nut is provided with a smooth wall section, a patterned section and an annular groove section. The second pattern angle of the patterned section is designed to be vertical at 120° and the tooth depth is 0.5-0.6 mm. During the injection molding process, these structures are completely enclosed in the plastic part.
It improves the tensile strength and torque after injection molding, prevents the nut from pulling out, and enhances the longitudinal tensile strength.
Smart Images
Figure CN223511299U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of knurled nut structures, specifically to a knurled nut with high connection strength. Background Technology
[0002] like Figure 1 As shown, a typical knurled nut has an internal threaded hole in the middle, and the surface is only machined with pineapple knurling with the first pattern angle A1 being 90°. After injection molding, the torque and high strength of this type of knurled nut are generally average, and it is difficult to meet the requirements for high tensile strength. Utility Model Content
[0003] In view of the technical problems mentioned in the background art, the purpose of this utility model is to provide a knurled nut with high connection strength.
[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows:
[0005] A high-strength knurled nut, wherein the knurled nut has an internal threaded hole in the middle part, and its outer side wall is provided with a smooth wall section, a patterned section and an annular groove section from top to bottom; the second pattern angle of the patterned section is 120° vertical and the tooth depth is 0.5 mm-0.6 mm; during injection molding, the smooth wall section, the patterned section and the annular groove section are all injected into the plastic part.
[0006] The annular groove segment includes two annular grooves.
[0007] Compared with the prior art, the beneficial effects of this utility model are:
[0008] This application improves the tensile strength after injection molding by adding an annular groove structure below the knurled nut. The second knurling angle is designed to be vertical at 120°, and the tooth depth is increased to over 0.5 mm, ensuring that the tensile strength is also improved even under torque after injection molding. In use, the lower part of the nut head is integrally injection molded into the plastic part, completely enclosing the knurled and annular groove portions. The annular groove is filled with plastic, which improves the longitudinal tensile strength and prevents the nut from being pulled out. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the structure of a knurled nut in the prior art;
[0010] In the diagram, A1 represents the first pattern angle;
[0011] Figure 2 This is a schematic diagram of the structure of the knurled nut provided in the embodiments of this application;
[0012] In the diagram, 1 is the smooth wall section, 2 is the patterned section, 3 is the annular groove section, and A2 is the second pattern angle. Detailed Implementation
[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0014] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0015] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting; they can refer to a direct connection or an indirect connection. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.
[0016] like Figure 1 The diagram shown is a structural schematic of a knurled nut in the prior art;
[0017] like Figure 2 The diagram shown is a structural schematic of the knurled nut provided in an embodiment of this application;
[0018] This utility model provides a high-strength knurled nut, wherein the knurled nut has an internal threaded hole in the middle part, and its outer side wall is provided with a smooth wall section 1, a patterned section 2 and an annular groove section 3 from top to bottom; the second pattern angle A2 of the patterned section 2 is vertical at 120°, and the tooth depth is 0.5 mm to 0.6 mm; during injection molding, the smooth wall section 1, the patterned section 2 and the annular groove section 3 are all injected into the plastic part.
[0019] Preferably, the annular groove segment 3 includes two annular grooves.
[0020] It should be noted that this application improves the tensile strength after injection molding by adding an annular groove structure below the knurled nut. Furthermore, the second knurling angle is designed to be vertical at 120°, and the tooth depth is increased to over 0.5 mm, ensuring that the tensile strength is also improved even under torque after injection molding. In use, the lower part of the nut head is integrally injection molded into the plastic part, completely encasing the knurled and annular groove portions. The annular groove is filled with plastic, which improves the longitudinal tensile strength and prevents the nut from being pulled out.
[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A high-strength knurled nut, characterized in that, The knurled nut has an internal threaded hole in the middle part, and its outer side wall is provided with a smooth wall section (1), a patterned section (2) and an annular groove section (3) from top to bottom; the second pattern angle (A2) of the patterned section (2) is 120° vertical and the tooth depth is 0.5 mm to 0.6 mm; during injection molding, the smooth wall section (1), the patterned section (2) and the annular groove section (3) are all injected into the plastic part.
2. The high-strength knurled nut according to claim 1, characterized in that, The annular groove segment (3) includes two annular grooves.