Injection molding nut

Abstract

The utility model relates to the technical field of injection molding nuts, in particular to an injection molding nut which comprises a nut body, internal threads are arranged on the inner side of the nut body, the nut body is composed of a polygonal disc and an inverted circular truncated cone, and the bottom end of the inverted circular truncated cone is connected with a barb type nozzle sleeve. The barb type nozzle sleeve can enhance the pulling-out force of the nut body in a plastic part after injection molding, a plurality of oblique teeth are fixedly connected to the inverted circular truncated cone and the barb type nozzle sleeve, and a liquid supplementing assembly is arranged on the nut body. According to the utility model, through the arrangement of the liquid supplementing assembly and the barb type nozzle sleeve, when the nut body loosens or shakes in the plastic part, namely a gap is formed between the nut body and the plastic part, glue liquid can be supplemented to the side surfaces of the helical teeth and the surface of the barb type nozzle sleeve through the liquid supplementing assembly, so that the stability of the barb type nozzle sleeve is enhanced; therefore, the rotating torque and the pulling-out force of the nut body after loosening or shaking are enhanced at the same time, and the service life of the nut body is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of injection nut technology, and in particular to an injection nut. Background Technology

[0002] Injection-molded nuts are metal or non-metal threaded inserts that are embedded inside plastic parts through an injection molding process. They are used to provide reliable threaded connection points for plastic parts, solving problems such as insufficient strength of the plastic itself and easy wear of threads. They are widely used in industries such as vehicle parts, communication equipment, electronics, machinery, and aerospace.

[0003] For example, Chinese patent CN222102523U discloses an injection-molded nut, which increases the stability of the injection-molded nut in the injection-molded part by setting an annular groove between straight teeth and dense teeth, and by forming an annular ring after injection molding.

[0004] The applicant discovered that the aforementioned comparative patent achieves connection with plastic parts by setting straight teeth on the upper part and dense teeth on the lower part of the nut body. However, the dense teeth do not engage well with the inside of the plastic parts, resulting in a small resistance to axial tensile force, making it easy to be pulled out, and causing poor stability, which affects the service life of the injection-molded nut. Utility Model Content

[0005] In view of this, the purpose of this utility model is to propose an injection nut to solve the problem that existing injection nuts are prone to rotation and being pulled out in injection molded parts, resulting in poor stability.

[0006] To achieve the above objectives, this utility model provides an injection-molded nut, including a nut body with an internal thread on its inner side. The nut body is composed of a polygonal disc and a chamfered frustum. A hook-type nozzle is connected to the bottom end of the chamfered frustum. The hook-type nozzle can enhance the pull-out force of the nut body in the plastic part after injection molding. Several helical teeth are fixedly connected to the chamfered frustum and the hook-type nozzle. A liquid replenishment component is provided on the nut body.

[0007] Preferably, the polygonal disc, the inverted frustum, and the hook-shaped mouthpiece are integrally formed, with the inverted frustum located between the polygonal disc and the hook-shaped mouthpiece.

[0008] Preferably, the fluid replenishment assembly includes an annular groove formed on the top of the polygonal disc, and a sealing ring is engaged in the annular groove. A fluid replenishment channel is formed at the bottom of the inner wall of the annular groove, and the outlet end of the fluid replenishment channel is formed on the surface of an inverted frustum.

[0009] Preferably, the outlet ends of the liquid replenishment channels are distributed on both sides of the helical teeth.

[0010] Preferably, the outlet end of the fluid replenishment channel is provided with an easy-tear aluminum foil composite film, which can seal the outlet of the fluid replenishment channel. The sealing ring is provided with an operating hole, which facilitates the removal of the sealing ring.

[0011] Preferably, the number of sides on the polygonal disk is the same as the number of oblique teeth, and they are aligned vertically.

[0012] The beneficial effects of this utility model are as follows: the polygonal disc and the helical teeth are set, and the number of sides on the polygonal disc and the number of helical teeth are the same, forming a multi-sided and multi-tooth structure, which enhances the rotational torque of the nut body in the plastic part after injection molding, and plays a multiple role in preventing rotation. The barbed mouth sleeve can enhance the pull-out force of the nut body in the plastic part after injection molding.

[0013] By incorporating a liquid replenishment component, when the nut body becomes loose or wobble within the plastic part, creating a gap between the nut body and the plastic part, the component can replenish adhesive to the side of the helical teeth and the surface of the barbed nozzle. This allows the adhesive to flow along the surface of the truncated cone and the helical teeth onto the surface of the barbed nozzle, thereby enhancing the stability of the barbed nozzle. This, in turn, increases the rotational torque and pull-out force of the nut body after loosening or wobble, thus extending the service life of the nut body. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a cross-sectional view of the present invention.

[0017] In the diagram: 1. Nut body; 2. Polygonal disc; 3. Inverted frustum; 4. Hook-type nozzle; 5. Helical teeth; 6. Fluid replenishment assembly; 8. Annular groove; 9. Fluid replenishment channel; 11. Easy-tear aluminum foil composite film; 12. Sealing ring. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0019] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0020] like Figure 1 , Figure 2 As shown, an injection-molded nut includes a nut body 1, and the inner side of the nut body 1 is provided with an internal thread. The nut body 1 is composed of a polygonal disc 2 and an inverted frustum 3. The bottom end of the inverted frustum 3 is connected to a barbed nozzle 4. The barbed nozzle 4 can enhance the pull-out force of the nut body 1 in the plastic part after injection molding. Several helical teeth 5 are fixedly connected to the inverted frustum 3 and the barbed nozzle 4. The number of sides on the polygonal disc 2 is the same as the number of helical teeth 5, and they are aligned with each other. A liquid replenishment component 6 is provided on the nut body 1.

[0021] By ensuring that the number of sides on the polygonal disk 2 is the same as the number of helical teeth 5, both the polygonal disk 2 and the helical teeth 5 in this application have 8 sides and are aligned vertically to form a multi-sided, multi-tooth structure. This structure enhances the rotational torque of the nut body 1 within the plastic part after injection molding, providing multiple anti-rotation functions. The helical teeth 5 also enhance the axial tensile force resisted by the nut body 1, i.e., enhance the pull-out force of the nut body 1. The barbed nozzle 4 further enhances the pull-out force of the nut body 1 within the plastic part after injection molding, thereby improving the stability of the nut body 1 within the plastic part.

[0022] In a preferred embodiment of this utility model, the polygonal disc 2, the inverted frustum 3, and the barbed mouthpiece 4 are integrally formed, and the inverted frustum 3 is located between the polygonal disc 2 and the barbed mouthpiece 4. The integrally formed structure increases the robustness of the related structures.

[0023] In another preferred embodiment of the present invention, the liquid replenishment component 6 includes an annular groove 8 formed on the top of the polygonal disk 2, and a sealing ring 12 is engaged in the annular groove 8. An operating hole is provided on the sealing ring 12 so that the sealing ring 12 can be easily removed through the operating hole. A liquid replenishment channel 9 is formed at the bottom of the inner wall of the annular groove 8, and the outlet end of the liquid replenishment channel 9 is formed on the surface of the inverted frustum 3.

[0024] Both sides of the helical tooth 5 are provided with outlet ends of the liquid replenishment channel 9. The outlet ends of the liquid replenishment channel 9 are provided with easy-tear aluminum foil composite film 11. When the plastic part is injection molded, the easy-tear aluminum foil composite film 11 can prevent the injection liquid from flowing back into the liquid replenishment channel 9. The easy-tear aluminum foil composite film 11 can block the outlet of the liquid replenishment channel 9.

[0025] When the nut body 1 becomes loose or wobbles inside the plastic part, a gap appears between the nut body 1 and the plastic part. At this time, adhesive can be added to the gap through the liquid replenishment component 6. The steps for replenishing the adhesive are as follows: first, remove the sealing ring 12 through the operating hole; then, puncture the easy-tear aluminum foil composite film 11 with a sharp part; then, inject the adhesive to be replenished into the annular groove 8. The adhesive will flow out from the outlet end of the liquid replenishment channel 9. Since the outlet ends of the liquid replenishment channel 9 are distributed on both sides of the helical tooth 5, the adhesive will flow along the side of the helical tooth 5 and the surface of the inverted round truncated cone 3 through the gap and finally onto the barbed nozzle 4, so that the adhesive can bond to the plastic part, thereby enhancing the stability of the barbed nozzle 4 inside the plastic part. This also enhances the rotational torque and pull-out force of the nut body 1 after loosening or wobbling, and improves the service life of the nut body.

[0026] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0027] The embodiments of this utility model are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A molded nut, comprising a nut body (1), wherein the inner side of the nut body (1) is provided with an internal thread, characterized in that, The nut body (1) is composed of a polygonal disc (2) and a chamfered frustum (3). The bottom end of the chamfered frustum (3) is connected to a barbed nozzle (4). The barbed nozzle (4) can enhance the pull-out force of the nut body (1) in the plastic part. Several helical teeth (5) are fixedly connected on the chamfered frustum (3) and the barbed nozzle (4). The nut body (1) is provided with a liquid replenishment component (6).

2. The injection-molded nut according to claim 1, characterized in that, The polygonal disc (2), the inverted frustum (3), and the hook-shaped mouthpiece (4) are integrally formed, and the inverted frustum (3) is located between the polygonal disc (2) and the hook-shaped mouthpiece (4).

3. The injection-molded nut according to claim 1, characterized in that, The liquid replenishment component (6) includes an annular groove (8) opened on the top of the polygonal disk (2), and a sealing ring (12) is snapped into the annular groove (8). A liquid replenishment channel (9) is opened at the bottom of the inner wall of the annular groove (8), and the outlet end of the liquid replenishment channel (9) is opened on the surface of the inverted frustum (3).

4. The injection-molded nut according to claim 3, characterized in that, The outlet ends of the replenishment channels (9) are distributed on both sides of the helical teeth (5).

5. The injection-molded nut according to claim 3, characterized in that, The outlet end of the liquid replenishment channel (9) is provided with an easy-tear aluminum foil composite film (11), which can block the outlet of the liquid replenishment channel (9). The sealing ring (12) is provided with an operation hole, which facilitates the removal of the sealing ring (12).

6. The injection-molded nut according to claim 1, characterized in that, The number of sides on the polygonal disk (2) is the same as the number of the helical teeth (5), and they are aligned vertically.

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