Injection molding nut and cover combined structure of automobile current sensor

Abstract

The utility model relates to an injection molding nut and cover combined structure of an automobile current sensor, which comprises a nut component and a connecting piece assembly body arranged outside the nut component, and the nut component comprises a nut cover structure and a cylindrical nut structure. The cylindrical nut structure comprises a rotating body piece of a hollow structure and threaded ring bodies evenly distributed on the outer portion of the rotating body piece, the nut cover structure comprises an upper end sleeving end sleeve and a lower end connecting end sleeve which are integrally designed, and a matched butt joint face is arranged on the periphery of the upper end sleeving end sleeve. The width of the upper end sleeving end sleeve is larger than that of the lower end connecting end sleeve. The additional structure of the nut cover is adopted for firstly assembling the component, so that the nut is effectively insulated and protected under the condition that the existing assembling space cannot be expanded and the plastic surface cannot be increased, and the risk of glue overflow in the injection molding of a product is avoided.

Description

Technical Field

[0001] The utility model relates to an injection molded component, in particular to an injection molded nut and cover combined structure of an automobile current sensor. Background Art

[0002] The main function of the drive motor is to provide power for new energy vehicles and convert electrical energy into rotational mechanical energy. Its main components include stator, rotor, structural components and casing.

[0003] Real-time control of the motor's working status is inseparable from the real-time data of the current, which requires current sensors to sample to achieve closed-loop control. A specific insert injection molding process is required for the current sensor to ensure performance requirements such as molding and insulation.

[0004] At present, the current sensor needs to be installed and fixed. The nut tightening needs to be injection molded together with the magnetic core, and the position must be accurate. Due to the limited installation space, the fixing nut cannot be lengthened, so the nut is made into a blind hole (this prevents the injection molding inside the screw hole from overflowing and affecting the lock pair), and then the local glue position is increased to ensure the wall thickness and insulation distance. Utility Model Content

[0005] The purpose of the utility model is to provide an injection-molded nut cover combined structure of an automobile current sensor, which solves the problem that the fixed nut cannot be lengthened due to limited installation space, so that the nut can be made into a blind hole form (this prevents the injection molding inside the screw hole from overflowing and affecting the lock pair), and then increases the local glue position to ensure the wall thickness and insulation distance.

[0006] The technical solution adopted by the utility model to solve its technical problems is: an injection-molded nut cover combination structure of an automobile current sensor, comprising a nut assembly and a connector assembly body arranged outside the nut assembly, the nut assembly comprising a nut cover structure and a cylindrical nut structure, the cylindrical nut structure comprising a swivel part with a hollow structure and a threaded ring body evenly distributed outside the swivel part, the nut cover structure comprising an upper end sleeve end sleeve and a lower end connecting end sleeve of an integral design, a matching docking surface is provided on the outer periphery of the upper end sleeve end sleeve, and the width of the upper end sleeve end sleeve is greater than the width of the lower end connecting end sleeve.

[0007] The connector assembly comprises an injection-molded external connecting body, a nut component placement cavity arranged in the external connecting body, and a fixing hole arranged at the upper end of the nut component placement cavity.

[0008] A nut cover structure limiting groove is arranged in the nut assembly placement cavity, and a threaded ring body limiting groove and a rotating body end limiting groove are arranged below the nut cover structure limiting groove.

[0009] The cylindrical nut structure is a metal part, and the nut cover structure is an injection molded part.

[0010] The beneficial effects of the utility model are as follows: the components are assembled first by adopting an additional structure of a nut cover, and when the existing assembly space cannot be expanded and the plastic surface cannot be increased, the nut is effectively insulated and protected, so that the risk of glue overflow during product injection molding is avoided.

[0011] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model.

[0013] Figure 2 for Figure 1 Schematic diagram of the nut assembly structure.

[0014] Figure 3 for Figure 2 The split state diagram.

[0015] Figure 4 It is a schematic diagram of the structure of the connector assembly of the utility model.

[0016] Figure 5 for Figure 4 AA section view.

[0017] In the figure: 1. swivel member, 2. threaded ring body, 3., upper end sleeve connection end sleeve, 4. lower end connection end sleeve, 5. matching docking surface, 6. external body, 7. nut assembly placement cavity, 8. fixing hole, 9. nut cover structure limiting groove, 10. threaded ring body limiting groove, 11. swivel member end limiting groove. DETAILED DESCRIPTION

[0018] The directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like in the application text are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] Embodiment 1, as Figure 1-5 As shown, an injection-molded nut cover combined structure of an automotive current sensor includes a nut assembly and a connector assembly body arranged outside the nut assembly. The nut assembly includes a nut cover structure and a cylindrical nut structure. The cylindrical nut structure includes a hollow rotating body 1 and a threaded ring 2 evenly distributed outside the rotating body. The nut cover structure includes an upper sleeve end sleeve 3 and a lower connecting end sleeve 4 of an integral design. A matching docking surface 5 is provided on the outer periphery of the upper sleeve end sleeve. The width of the upper sleeve end sleeve is greater than that of the lower connecting end sleeve. The cylindrical nut structure is a metal part, and the nut cover structure is an injection-molded part.

[0021] The connector assembly comprises an injection-molded external body 6, a nut assembly placement cavity 7 disposed in the external body, and a fixing hole 8 disposed at the upper end of the nut assembly placement cavity.

[0022] A nut cover structure limiting groove 9 is arranged in the nut assembly placement cavity, a threaded ring body limiting groove 10 and a rotating body end limiting groove 11 are arranged at the lower part of the nut cover structure limiting groove.

[0023] The through-hole nut is fastened and pre-injected into a cap-shaped cover structure, which is then integrally injection-molded after being assembled with the nut.

[0024] In order to ensure the thickness of the plastic wall during injection molding of the through-hole nut without directly causing overflow of glue to affect the tightening of the screw, a cover for fixing the nut is first added.

[0025] The nut cover can be assembled in the front-end process to avoid internal glue overflow caused by direct injection molding of the through-hole nut.

[0026] The nut cover structure is pre-injected, and the injection-molded cover and the cylindrical nut are assembled manually or with tooling to ensure the insulation of the through-hole cylindrical nut. At the same time, the risk of glue overflow from the inner hole of the directly embedded injection-molded nut product is eliminated. Figure 4The section AA at the midpoint dashed line position (front view) is where the nut cover and the cylindrical nut are assembled. This nut cover structure can seal the nut end face during secondary overmolding. When the existing assembly space cannot be expanded and the plastic surface cannot be increased, the nut can be effectively insulated and protected, thus avoiding the risk of glue overflow during product injection molding.

[0027] The above embodiments are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field shall fall within the protection scope determined by the claims of the present invention.

[0028] The parts not involved in the present invention are the same as the prior art or can be implemented by using the prior art.

Claims

1. An injection-molded nut cover combination structure of an automotive current sensor, comprising a nut assembly and a connector assembly arranged outside the nut assembly, wherein the nut assembly comprises a nut cover structure and a cylindrical nut structure, wherein the cylindrical nut structure comprises a swivel member with a hollow structure and a threaded ring body evenly distributed outside the swivel member, wherein the nut cover structure comprises an upper sleeve end sleeve and a lower connecting end sleeve of an integral design, wherein a matching docking surface is arranged on the outer periphery of the upper sleeve end sleeve, and wherein the width of the upper sleeve end sleeve is greater than the width of the lower connecting end sleeve.

2. The injection-molded nut and cover assembly structure of the automotive current sensor according to claim 1, characterized in that: The connector assembly comprises an injection-molded external connecting body, a nut component placement cavity arranged in the external connecting body, and a fixing hole arranged at the upper end of the nut component placement cavity.

3. The injection-molded nut and cover assembly structure of the automotive current sensor according to claim 2, characterized in that: A nut cover structure limiting groove is arranged in the nut assembly placement cavity, and a threaded ring body limiting groove and a rotating body end limiting groove are arranged below the nut cover structure limiting groove.

4. The injection-molded nut and cover assembly structure of the automotive current sensor according to claim 1, characterized in that: The cylindrical nut structure is a metal part, and the nut cover structure is an injection molded part.

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