Injection molding protective sleeve for wire connector

Abstract

The utility model discloses an injection molding protective sleeve for a wire connector, which is arranged at the joint of the connector and a wire and comprises a first section and a second section. The cross section of the first section is rectangular and is integrated with the connector, a rectangular groove with an opening in one end is formed in one side, close to the connector, of the upper surface, and a fixing groove is formed in the central axis of the bottom surface of the groove; the second section is a tubular body and is provided with a plurality of holes in a penetrating mode. Through the arrangement of the injection molding protective sleeve, the connector and the protective sleeve are integrated, the electric wire and the sealing ring in the plastic shell are effectively protected, and short circuit of the whole circuit caused by water drops entering the electric wire and the sealing ring after the electric wire and the sealing ring are aged and cracked in the later period is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of vehicle wire harness, especially relates to a injection protective sheath for wire connector. BACKGROUND

[0002] The tail part of the connector plastic shell exposes the wire, and the traditional method is to wrap the exposed wire with PVC or cloth-based adhesive tape, which can protect the wire for a long time, but the exposed part of the wire and the sealing ring inside the plastic shell will crack and age, and if water drops into the plastic shell and the exposed wire, it will easily cause short circuit between loops.

[0003] A Chinese patent with the patent name of an electric energy meter connector structure is disclosed in the Chinese patent publication No. CN205210152U and published on May 4, 2016, which discloses an electric energy meter connector structure, comprising a connector body with a hollow structure, one end of which is a plug-in part connected with an electric energy meter jack, and the other end is a wire connecting part connected with external wires, a first threaded hole is formed on the wire connecting part and communicates with the hollow structure, the wire extends into the connector body from the tail end of the wire connecting part, and a threaded part passes through the first threaded hole and is fixed in the connector body by the cooperation of the first threaded hole. UTILITARY MODEL

[0004] The utility model discloses an injection protective sheath for wire connector, and the connector and the protective sheath are integrated by setting the injection protective sheath, so that the wire and the sealing ring inside the plastic shell are effectively protected, and water drops are prevented from entering the overall circuit to cause short circuit after the wire and the sealing ring crack and age.

[0005] To achieve the above object, the utility model adopts the following technical scheme: an injection protective sheath for wire connector, which is arranged at the connection between the connector and the wire and comprises a first section and a second section; the first section has a rectangular cross section and is integrated with the connector, a rectangular groove with an open end is arranged on the upper surface of the first section close to one side of the connector, and a fixing groove is arranged on the central axis of the groove bottom surface; the second section is a tubular body arranged close to the wire and provided with a plurality of holes. The connector and the protective sheath are integrated by setting the injection protective sheath, so that the wire and the sealing ring inside the plastic shell are effectively protected, and water drops are prevented from entering the overall circuit to cause short circuit after the wire and the sealing ring crack and age.

[0006] Preferably, the rectangular groove and the fixing groove are open at one end close to the connector, which is used to accommodate part of the connector assembly, facilitates the inspection and adjustment of the assembly during production, and ensures the product quality.

[0007] Preferably, the fixing groove is rectangular and arranged along the length direction of the central axis of the rectangular groove. The length of the fixing groove is the same as that of the rectangular groove, and the fixing groove is symmetrical to the rectangular groove along the symmetry axis, for placing the connector assembly. The symmetrical design of the rectangular fixing groove and the rectangular groove can more stably place the connector assembly, enhance the fixing effect of the assembly in the protective sleeve, reduce the displacement of the assembly caused by vibration or external force, and thus improve the reliability and stability of the entire connector.

[0008] Preferably, the bottom of the rectangular groove is provided with a slope section near the two sides of the side wall of the rectangular groove, and the slope section is inclined downward toward the side wall.

[0009] Preferably, the rectangular groove and the fixing groove are used for placing the connector assembly. Placing the connector assembly in the rectangular groove and the fixing groove can realize compact layout of the assembly, fully utilize the internal space of the protective sleeve, make the entire connector structure more compact and reasonable, and be conducive to reducing the volume and weight of the product, facilitating installation and use.

[0010] Preferably, a through hole for guiding the wire is arranged in the connector, the first section and the second section. The design of the through hole provides a clear guide path for the wire, avoiding the twisting and breakage of the wire during assembly. The wire can be effectively protected.

[0011] Preferably, the wire is sequentially threaded through the connector, the first section and the second section, and the first section is used for wrapping the exposed wire. The first section wraps the exposed wire, which can effectively protect the wire from the influence of the external environment such as dust, moisture and corrosive gas, prolong the service life of the wire, and also improve the insulation performance and safety of the entire connector.

[0012] Preferably, the second section is used for wrapping the wire and is a curved straight pipe, and the axis of the second section coincides with the axis of the first section. The design of the curved straight pipe not only provides sufficient wrapping space for the wire, but also enables the wire to maintain good flexibility and tensile strength in the curved state, avoiding damage to the wire due to excessive bending. Meanwhile, the coincident axis design ensures the structural stability of the entire protective sleeve, so that the wire can uniformly transmit force when stressed, reducing local stress concentration.

[0013] Preferably, the axis of the second section is perpendicular to the axis of the first section. This perpendicular design makes the protective sleeve more flexible in spatial layout, which can adapt to different installation environments and angle requirements, improve the universality and applicability of the product, and also facilitate multi-directional wiring and connection in limited space, enhancing the layout flexibility of the entire electrical system.

[0014] Preferably, one end of the second section is arranged at the first section, and the first section forms an L shape. The L-shaped structure not only has good space adaptability, but also can enhance the overall structural strength of the protective sleeve, improve its impact resistance and deformation resistance, better protect the internal wires and connector assembly, and the L-shaped design is also convenient for connecting and fixing with other electrical elements or equipment, improving the integration and stability of the entire system.

[0015] The utility model has the advantages that the utility model discloses through setting up injection molding protective sleeve, fuses connector and protective sleeve into one, effectively protects the wire and plastic shell internal sealing ring, avoids the water drop after the wire and sealing ring later aging and cracking and causes the overall circuit short circuit. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structure schematic view of the utility model embodiment 1.

[0017] Figure 2 It is a structure schematic view of the utility model embodiment 2.

[0018] The figure signification is as follows: 1: protective sleeve;1.1: first section;1.1.1: rectangular groove;1.1.2: fixed groove;1.1.3: slope section;1.2: second section;2: connector;3: wire. DETAILED DESCRIPTION

[0019] To make the purpose, technical scheme and advantages of the utility model embodiments more clear, the technical scheme in the utility model embodiments will be described clearly and completely in conjunction with the drawings in the utility model embodiments below, and obviously, the described embodiments are part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor are within the protection scope of the utility model.

[0020] In modern electrical equipment, the reliability of wire 3 connector 2 is crucial for the stable operation of the entire circuit system. The injection molding protective sleeve 1 for wire 3 connector 2 involved in the utility model fuses the connector 2 and the protective sleeve 1 into one through the injection molding protective sleeve 1, effectively solves many problems faced by the connector 2 in actual use, such as waterproof, dustproof, protection of internal components, etc., greatly improves the performance and service life of the connector 2. The characteristics and advantages of the injection molding protective sleeve 1 will be described in detail through specific embodiments below.

[0021] For example, the injection molding protective sleeve 1 of the utility model is waterproof, dustproof and can effectively protect the internal components, and the connector 2 is not easy to be damaged or corroded, and the service life of the connector 2 is greatly improved. Figure 1As shown, the injection molded protective sleeve 1 is precisely injection molded at the connection between the connector 2 and the wire 3, i.e. wrapped around the exposed wire near the end of the connector 2, and its structure mainly includes a first section 1.1 and a second section 1.2. The first section 1.1 is rectangular in cross-section and perfectly integrated with the connector 2. From the perspective of physical structure, this integration significantly increases the contact area and bonding force between the two, so that the protective sleeve 1 and the connector 2 can maintain stable connection when subjected to external force impact, vibration, etc., and are not prone to displacement, falling off, etc., greatly enhancing the reliability of the overall structure. From the functional point of view, the first section 1.1 is like a strong defense line for the connector 2, protecting it in all directions, effectively resisting the erosion of external factors such as dust, moisture, corrosive substances, etc., and avoiding performance degradation, short circuit, etc. caused by external environmental factors. The upper surface of the first section 1.1 near the connector 2 side is provided with an open-ended rectangular slot 1.1.1, and the open end of the rectangular slot 1.1.1 and the fixed slot 1.1.2 near the connector 2 facilitates inspection and adjustment of the components during production. The connector 2 components are placed in the rectangular slot 1.1.1, and after injection molding, specially designed high-precision fine-tuning tools such as precision tweezers and micro-positioners can be used to conveniently and accurately fine-tune the position of the components placed in the slot. In this way, it is ensured that each component is precisely in the optimal working position, meeting the strict production process requirements. This not only reduces the rate of defective products caused by deviation of the installation position of the components, but also greatly improves the assembly speed on the production line, thereby significantly improving the overall production efficiency and product quality. In the selection of the material of the protective sleeve 1, TPU (thermoplastic polyurethane elastomer rubber) is preferably used for injection molding. TPU material has excellent comprehensive performance, it has excellent wear resistance, which can effectively resist the wear caused by friction with other parts during daily use, prolonging the service life of the protective sleeve 1; good oil resistance and chemical corrosion resistance make it still maintain stable physical and chemical properties when facing various oil stains, chemical reagents, etc. environment, ensuring that the protective effect on the connector 2 is not affected; excellent elasticity and flexibility allow the protective sleeve 1 to closely fit when wrapping the wire and the connector 2, while being able to adapt to a certain degree of bending, stretching, etc. deformation without breaking, damaging, etc. In addition, TPU material also has good processing performance, which is suitable for molding by injection molding process, and can accurately shape the required complex shape to meet the high-precision design requirements of the protective sleeve 1.

[0022] As Figure 1 and Figure 2As shown, the fixed groove 1.1.2 is rectangular, arranged along the axis length direction of the rectangular groove 1.1.1, and has the same length as the rectangular groove 1.1.1, and is symmetrical along the symmetry axis of the rectangular groove 1.1.1. In actual production, this symmetrical design enables the connector 2 components to be placed more stably in the protective sleeve 1. Taking the signal transmission connector 2 in the intelligent control device as an example, the key chips and other components inside are placed in the fixed groove 1.1.2. Due to the precise design of the fixed groove 1.1.2, these components can still maintain a stable position when subjected to vibrations generated during device operation or slight external collisions, reducing the displacement of components caused by vibrations or external forces, thereby improving the reliability and stability of the entire connector 2, ensuring the accuracy and stability of signal transmission. The bottom of the rectangular groove 1.1.1 is provided with a slope section 1.1.3 on both sides near the side wall, which is inclined downward towards the side wall.

[0023] The connector 2, the first section 1.1 and the second section 1.2 are all provided with through holes for guiding the wires 3. The guiding path of the wires 3 is very clear, effectively avoiding twisting, breakage and other situations during assembly and transportation. The first section 1.1 plays an important role in wrapping exposed wires in the entire protective structure. When the intelligent control device is running, its internal environment is complex and may have various interference factors. The first section 1.1 wraps the exposed wires, like giving the wires a layer of solid armor, effectively protecting the wires from the influence of the external environment, such as dust, moisture, corrosive gases, etc. This not only prolongs the service life of the wires, but also greatly improves the insulation performance and safety of the entire connector 2, ensuring that the device can operate stably in various complex environments.

[0024] Embodiment 1.

[0025] The second section 1.2 also plays an indispensable role in the wire 3 protection of the smart control device. It is a curved straight pipe, and the axis of the second section 1.2 coincides with that of the first section 1.1. The second section 1.2 is arranged on the side of the first section 1.1 away from the connector 2, and a plurality of holes are arranged through it, preferably two holes in this embodiment, which are arranged on the upper and lower surfaces of the second section 1.2 respectively and on the same vertical line. On the one hand, in the injection molding process, the two holes help to exhaust the gas in the mold, thereby improving the molding quality of the second section 1.2 and avoiding internal defects caused by gas residues. On the other hand, in the actual use of the protective sleeve 1, these holes can balance the internal and external pressure to some extent, prevent the protective sleeve from deforming due to pressure difference, and also provide a potential exhaust channel for possible water vapor and the like, further enhancing the protection performance. In the power supply module of the device, due to the relatively regular space, this coincident design enables the protective sleeve 1 to provide sufficient wrapping space for the wire 3, while maintaining good flexibility and tensile performance of the wire 3 in the curved state. In actual use, the power supply wire 3 may be subjected to certain tension and bending force due to the movement or vibration of the device, and the design of the second section 1.2 can effectively prevent the wire 3 from being damaged due to excessive bending. At the same time, the coincident axis design ensures the structural stability of the entire protective sleeve 1, so that the wire 3 can uniformly transmit when stressed, reduce local stress concentration, ensure the stability of power supply, and avoid device power failure and other faults caused by wire 3 problems. In the operation of the device, the power supply wire 3 will inevitably be subjected to certain tension and bending force due to the movement or vibration of the device. The curved straight pipe design of the second section 1.2, combined with its coincident axis with the first section 1.1, can make the wire 3 still maintain good flexibility and tensile performance in the curved state. When the wire 3 is subjected to bending force, the 174-degree bending angle design can effectively disperse stress and avoid damage such as internal wire breakage due to excessive bending.

[0026] In this embodiment, the length of the protective sleeve 1 is preferably 23.3 mm, the diameter of the outer wall of the second section 1.2 is preferably 9 mm, the diameter of the internal through hole is preferably 4.1 mm, the bending angle of the curved straight pipe is 174 degrees, and the height of the first section 1.1 is 11.8 mm.

[0027] Embodiment 2.

[0028] In the signal transmission line of the intelligent control device, considering the flexibility and space limitation of wiring, the axis of the second section 1.2 is perpendicular to the axis of the first section 1.1. This perpendicular design makes the protective sleeve 1 more flexible in space layout, which can adapt to different installation environments and angle requirements. In the actual installation process, technicians can connect the second section 1.2 to the first section 1.1 at a perpendicular angle according to the internal space structure and wiring requirements of the device, thereby realizing multi-directional wiring and connection. This design greatly improves the versatility and applicability of the product, and also facilitates reasonable wiring planning in limited space, enhances the layout flexibility of the entire electrical system, ensures stable operation of the signal transmission line in complex internal environment of the device, and reduces signal interference and attenuation. The second section 1.2 is arranged at one end of the first section 1.1, and the first section 1.1 forms an L shape. This L-shaped structure exhibits good space adaptability and structural strength in actual application. Taking the connection between the device and the external sensor as an example, the L-shaped protective sleeve 1 can better adapt to the particularity of the sensor installation position, and has high structural strength, which can effectively resist external possible collision and impact. A plurality of holes are arranged through the second section 1.2, preferably 6 holes. In the process of using the device, the L-shaped protective sleeve 1 not only can better protect the internal wire 3 and connector 2 assembly, but also facilitates connection and fixation with other electrical elements or devices. For example, the protective sleeve 1 can be fixed with the mounting bracket of the sensor through the corner of the L shape, which improves the integration and stability of the entire system, and ensures stable and reliable signal transmission between the device and the external sensor.

[0029] In this embodiment, the length of the protective sleeve 1 is preferably 23.3 mm, the diameter of the outer wall of the second section 1.2 is preferably 9 mm, the diameter of the internal through hole is preferably 4.1 mm, the bending angle of the curved straight tube is 174 degrees, and the height of the first section 1.1 is 11.8 mm.

[0030] In this embodiment, the length of the protective sleeve 1 is preferably 19 mm, the diameter of the outer wall of the second section 1.2 is preferably 9 mm, the diameter of the internal through hole is preferably 4.3 mm, the length of the second section 1.2 is preferably 23.4 mm, and the height of the first section 1.1 is 11.8 mm.

[0031] In use, the electrical wires and the sealing ring will inevitably age and crack. However, thanks to the protection of the injection-molded protective sleeve 1, this process is significantly delayed. The first section 1.1 wraps around the exposed electrical wires, protecting them from various physical and chemical factors in the external environment. For example, during operation of the device, corrosive gases in the surrounding environment can damage the insulation of the electrical wires, but the protective sleeve 1 effectively blocks these gases from coming into contact with the electrical wires, slowing down the aging process of the insulation. At the same time, the protective sleeve 1 also reduces mechanical wear on the electrical wires, which can rub against other components in the complex wiring inside the device. The presence of the protective sleeve 1 prevents this direct friction, extending the service life of the electrical wires.

[0032] For the sealing ring inside the plastic shell, the protective sleeve 1 also plays an important protective role. During operation of the device, the sealing ring needs to withstand certain pressure and temperature changes, and may also be affected by external factors such as dust and moisture. The presence of the injection-molded protective sleeve 1 reduces the direct impact of external factors on the sealing ring. The protective sleeve 1 effectively blocks the intrusion of moisture, preventing the sealing ring from aging rapidly due to long-term contact with moisture. In dust tests, the protective sleeve 1 prevents dust from entering the connector 2, avoiding the wear and corrosion of the sealing ring by dust. These factors combined significantly slow down the aging and cracking process of the sealing ring, ensuring its long-term stable sealing performance, further improving the waterproof, dustproof, and leakproof performance of the entire connector 2, and ensuring the reliability and stability of the device during long-term use.

[0033] Obviously, the above embodiments are merely examples for clarity and are not limiting of the embodiments. Based on the above description, those of ordinary skill in the art can make other different forms of changes or modifications. Here, it is not necessary and impossible to exhaust all embodiments. The obvious changes or modifications derived therefrom are still within the protection scope of the present utility model.

Claims

1. An injection molded protective sleeve for a wire connector, characterized in that, the protective sleeve is arranged at the joint of the connector and the wire, and comprises a first section and a second section; the first section is rectangular in cross section and integrated with the connector, and an upper surface thereof is provided with a rectangular slot open at one end, and a fixing slot is arranged on a central axis of the slot bottom surface; the second section is a tubular body arranged at a side close to the wire, and a plurality of holes are arranged through the second section.

2. An injection molded boot for a wire connector as defined in claim 1, wherein, the rectangular slot and the fixing slot are open at one end close to the connector.

3. An injection molded boot for a wire connector as defined in claim 1 or 2, characterized in that the fixing slot is rectangular and arranged along the central axis of the rectangular slot in the length direction.

4. An injection molded boot for a wire connector as defined in claim 1 or 2, wherein two sides of the rectangular slot bottom close to the side walls are provided with inclined sections, which are inclined downward toward the side walls.

5. An injection molded boot for a wire connector as defined in claim 4, wherein, the rectangular slot and the fixing slot are arranged to accommodate part of the connector assembly.

6. An injection molded boot for a wire connector as defined in claim 1, wherein, the connector, the first section and the second section are provided with through holes for guiding the wire.

7. An injection molded boot for a wire connector as defined in claim 4, wherein, the wire passes through the connector, the first section and the second section in sequence, and the first section is used to wrap the exposed wire.

8. An injection molded boot for a wire connector as defined in claim 1 or 6 or 7, wherein, the second section is used to wrap the wire, and is a curved straight tube, the central axis of which coincides with the central axis of the first section.

9. An injection molded boot for a wire connector as defined in claim 8, wherein, the central axis of the second section is perpendicular to the central axis of the first section.

10. An injection molded boot for a wire connector as defined in claim 9, wherein, one end of the second section is arranged at the first section, and the first section and the second section form an L shape.

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