Cable connector assembly

Abstract

The utility model relates to a cable connector assembly, comprising a first housing, a second housing and a sealing member, the first housing is detachably connected to the second housing, and the sealing member is arranged between the first housing and the second housing; the sealing piece comprises a through hole extending in the axial direction, a limiting part and a conical part, and when the first shell is connected to the second shell, the limiting part abuts against the second shell; the first shell is internally provided with an abutting part, and when the first shell is connected to the second shell, the abutting part abuts against the conical part, so that the conical part deforms towards the inner side direction of the through hole. According to the cable connector assembly, moisture or dust can be prevented from entering the connector assembly by adopting a simple structure, and the service life of an electrical element is prolonged.

Description

Technical Field

[0001] The utility model relates to a connector component, in particular to a cable connector component. Background Art

[0002] Cable connectors are suitable for various network systems, machinery or energy or signal transmission applications. Through cable connectors, conductors (wires) can be connected to appropriate matching components to achieve the connection and disconnection functions of the circuit, signal collection and transmission. However, the cable connectors currently on the market usually have insufficient sealing performance, which easily leads to dust or moisture entering, thus affecting the line. For the current non-injection molded integrated cable assemblies, especially the cable assemblies with tail clamps, their IP level is low, generally IP65 or below, and the requirements for the cylindricality of the cable outer diameter are high. For multi-core twisted wires, their cylindricality is low, so the protection level of multi-core twisted cable assemblies with tail clamps is lower. When the cable is bent at the tail, its core wire will be bent and the force will be transmitted to the pin solder joint, reducing the reliability of its solder joint, and there is even a risk that the solder joint is disconnected, resulting in the interruption of the signal circuit and the inability to transmit the signal. In order to solve the sealing effect, there are connectors and cables on the market that use an injection molded integrated structure, but this injection molding material needs to have adhesion with the connector housing and the cable outer sheath material, the material has high temperature resistance, high injection molding temperature requirements, and high injection molding costs. Utility Model Content

[0003] The utility model aims to provide a cable connector assembly with a simple structure and capable of isolating moisture or dust from entering the connector assembly. The utility model comprises a first shell, a second shell and a sealing member, wherein the first shell is detachably connected to the second shell, and the sealing member is disposed between the first shell and the second shell; the sealing member comprises a through hole, a limiting portion and a cone portion extending in an axial direction, and when the first shell is connected to the second shell, the limiting portion abuts against the second shell; a stop portion is provided in the first shell, and when the first shell is connected to the second shell, the stop portion abuts against the cone portion, so that the cone portion is deformed toward the inner side of the through hole.

[0004] Furthermore, the sealing element is made of elastic material; and the radial dimension of the cone portion gradually decreases from front to back.

[0005] Furthermore, the first shell is provided with an internal thread, the second shell is provided with an external thread matched with the internal thread of the first shell, and the first shell is threadedly connected to the second shell.

[0006] Furthermore, the sealing member includes an embedding section located at the front side, and the embedding section can be clamped on the inner side of the second shell.

[0007] Furthermore, the limiting portion is located at the rear side of the embedding section, and the radial dimension of the limiting portion is larger than that of the embedding section; when the first shell is connected to the second shell, the limiting portion abuts against the end of the second shell.

[0008] Furthermore, the cone portion is located at the rear side of the limiting portion, and the radial dimension of the cone portion gradually decreases from front to back.

[0009] Furthermore, it also includes a cable outer tube, one end of which is placed in the first shell, and one end of which has an extension portion, which extends radially in the first shell and abuts against the inner side of the stop portion of the first shell. When the first shell is connected to the second shell, the extension portion abuts against the cone portion, causing the cone portion to deform toward the inner side of the through hole.

[0010] Furthermore, the sealing member includes a tail portion, and the tail portion is embedded in the inner side of one end of the cable outer tube.

[0011] Furthermore, the front end of the embedded section has an arc-shaped transition section.

[0012] The utility model also provides another cable connector assembly, including a first shell, a second shell, a sealing member and a cable outer tube, wherein the first shell is detachably connected to the second shell, the sealing member is placed between the first shell and the second shell, and the cable outer tube is connected to the first shell; the sealing member includes a through hole, a limiting portion and a supporting section extending in the axial direction, and when the first shell is connected to the second shell, the limiting portion abuts against the second shell; a stopping portion is provided in the first shell, one end of the cable outer tube is placed in the first shell, and one end of the cable outer tube has an extending portion, and the extending portion extends radially in the first shell and abuts against the inner side of the stopping portion of the first shell, and when the first shell is connected to the second shell, the extending portion abuts against the supporting section, so that the supporting section is deformed toward the inner side of the through hole.

[0013] Compared with the prior art, the cable connector assembly of the utility model has the following advantages:

[0014] 1. A sealing member is provided between the first shell and the second shell. When the first shell and the second shell are tightened, the stopper in the first shell abuts against the conical portion of the sealing member. When the tightening is continued, the stopper squeezes the conical portion so that the conical portion is deformed toward the inner side of the through hole, so that the conical portion is tightly pressed against the outer side of the cable, thereby achieving a sealing effect.

[0015] 2. One end of the cable outer tube is placed in the first shell, and one end of the cable outer tube has an extension portion. The extension portion extends radially in the first shell and abuts against the inner side of the stop portion of the first shell. When the first shell is connected to the second shell, the extension portion abuts against the cone portion, causing the cone portion to deform toward the inner side of the through hole. When the first shell and the second shell are tightened, the extension portion squeezes the cone portion under the action of the stop portion so that the contact surface between the seal and the cable outer tube is sealed, thereby achieving a sealed and waterproof effect. This design can also increase the applicable range of the cable outer diameter. The seal of the utility model enables the connector assembly to adapt to the sealing performance requirements of multi-core twisted shielded cables with different wire diameters, is easy to assemble, and has a waterproof and dustproof grade of IP68 and above.

[0016] 3. The conical portion of the seal is located at the rear side of the limiting portion, and the radial size of the conical portion gradually decreases from front to back, so that when the first shell and the second shell are connected, the resistance is small at the beginning of the screw connection, and the resistance gradually increases later. It is also convenient to generate a radial component force along the conical portion of the seal under the axial force of the first shell and the second shell, so that the seal is radially deformed until the first shell and the second shell are locked, reaching the maximum radial deformation, and producing the best sealing result. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the connector assembly of the utility model when the first housing 1 is just connected to the second housing 2;

[0018] Figure 2 This is a schematic diagram of the structure of the connector assembly of the utility model when the first housing 1 is just connected to the second housing 2 (the insert 6, the connector nut 7, the shaft shoulder 8, and the clamping plate 9 are not shown);

[0019] Figure 3 This is a schematic diagram of the structure of the connector assembly of the utility model when the first housing 1 is just connected to the second housing 2 (the cable 5, the ferrule 6, the connector nut 7, the shaft shoulder 8, and the clamping plate 9 are not shown);

[0020] Figure 4 It is a schematic diagram of the structure when the first housing 1 of the connector assembly of the utility model is completely connected to the second housing 2 (the cable 5, the ferrule 6, the connector nut 7, the shaft shoulder 8, and the clamping plate 9 are not shown). DETAILED DESCRIPTION

[0021] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, if the terms "first", "second", "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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 indirectly connected 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.

[0024] The orientation definition in this embodiment is: Figure 3 As shown, the arrow direction X indicates the axial direction, the arrow direction Y indicates the radial direction, and the extending direction from the second housing 2 to the cable outer tube 4 is from front to back.

[0025] Refer to the attached Figures 1 to 4The cable connector assembly of the utility model comprises a first housing 1, a second housing 2 and a sealing member 3, wherein the first housing 1 is detachably connected to the second housing 2, and the sealing member 3 is placed between the first housing 1 and the second housing 2. In this embodiment, the first housing 1 is threadedly connected to the second housing 2, specifically, the first housing 1 is provided with an internal thread, and the second housing 2 is provided with an external thread adapted to the internal thread of the first housing 1, and the first housing 1 can be gradually connected to the second housing 2 by rotating the first housing 1, and the first housing 1 is tightened until the first housing 1 and the sealing member 3, and the second housing 2 and the sealing member 3 are tightly matched, that is, the connection between the first housing 1 and the second housing 2 is completed. In this embodiment, the sealing member 3 is made of elastic material, so that the sealing member 3 can be tightly matched with the first housing 1 and the second housing 2. In this embodiment, the first housing 1 is a crimping seat of the connector assembly, and the second housing 2 is a connector screw sleeve of the connector assembly. The rear end of the first housing 1 is connected with a clamping plate 9, and the front end of the second housing 2 is connected with a plug 6. More specifically, the connector nut 7 is sleeved against the shoulder 8 at the front end of the plug 6, and the shoulder 8 is connected to the second housing 2 by threading. The cable 5 is connected from the rear end of the first shell 1, and the plug 6 is connected from the front end of the second shell 2. The cable 5 is located on the inner side of the cable outer tube 4. After the cable 5 passes through the clamp plate 9, the inner hole of the first shell 1, the through hole 31 of the seal 3, and the inner hole of the second shell 2 in sequence, the core wire of the cable 5 is connected to the pin of the plug 6 in place according to the preset wiring definition. In this embodiment, the first shell 1 and the second shell 2 of the connector assembly are both plated for surface treatment to improve corrosion resistance. The cable 5 in this embodiment is a multi-core twisted shielded cable, which adopts a twisting process to improve anti-interference ability, adopts tinned copper conductors, and an insulating layer and outer sheath made of fluoroplastic material, which has a wide temperature resistance range and strong corrosion resistance. The clamp plate 9 is connected to the outside of the cable outer tube 4 by a bolt clamp, and the cable 5 and the cable outer tube 4 can be pressed together by the clamp plate 9 by adjusting the bolts to avoid a gap between the cable 5 and the cable outer tube 4.

[0026] In this embodiment, the seal 3 includes an embedding section 34, a limiting portion 32, a cone 33 and a tail 35 from front to back. The seal 3 is made by one-piece molding. The limiting portion 32 is connected to the rear end of the embedding section 34, the cone 33 is connected to the rear end of the limiting portion 32, and the tail 35 is connected to the rear end of the cone 33. The seal 3 also includes a through hole 31 extending in the axial direction, and the cable 5 can pass through the through hole 31 to connect with the Pin 61 in the second shell 2. The embedding section 34 can be clamped on the inner side wall of the second shell 2. In particular, the radial size of the embedding section 34 is slightly larger than the inner side wall of the second shell 2, so that when the first shell 1 is connected to the second shell 2, the embedding section 34 can be tightly fitted and plugged into the inner side of the second shell 2. The front end of the embedding section 34 has an arc transition section 341, and the arc transition section 341 adopts an R angle design to reduce the force transmitted to the Pin solder joint by the compression deformation of the front end of the seal 3, thereby improving the reliability of the solder joint. The limiting portion 32 is located at the rear side of the embedding section 34. The radial dimension of the limiting portion 32 is larger than that of the embedding section 34. The limiting portion 32 is step-shaped. When the first shell 1 is connected to the second shell 2, the embedding section 34 is clamped on the inner wall of the second shell 2, and the limiting portion 32 is against the end of the second shell 2 for assembly stop support, while bearing the deformation extrusion force from the rear end of the seal.

[0027] In this embodiment, the cone portion 33 of the seal 3 is located at the rear side of the limiting portion 32, and the radial dimension of the cone portion 33 gradually decreases from front to back. When the first shell 1 is connected to the second shell 2, the limiting portion 32 abuts against the second shell 2; a stop portion 11 is provided in the first shell 1, and when the first shell 1 is connected to the second shell 2, the stop portion 11 abuts against the cone portion 33, so that the cone portion 33 is deformed toward the inner side of the through hole 31. In this embodiment, the stop portion 11 is an end portion of the first shell 1, and when the first shell 1 is rotated and connected to the second shell 2, the stop portion 11 gradually approaches the seal 3 until it abuts against the cone portion 33. After the first shell 1 and the second shell 2 are completely connected, the stop portion 11 tightly abuts against the cone portion 33, so that the cone portion 33 is deformed toward the inner side of the through hole 31.

[0028] The present embodiment further includes a cable outer tube 4, which is sleeved on the outside of the cable 5. The cable outer tube 4 is connected to the first shell 1. In particular, one end of the cable outer tube 4 is placed in the first shell 1, and one end of the cable outer tube 4 has an extension portion 41, and the extension portion 41 extends radially in the first shell 1 and abuts against the inner side of the stop portion 11 of the first shell 1. When the first shell 1 is connected to the second shell 2, the extension portion 41 gradually approaches the cone 33 and abuts against the cone 33 under the push of the stop portion 11, and the cone 33 is deformed toward the inner side of the through hole 31 under the push of the stop portion 11, thereby sealing the contact surfaces between the cable outer tube, the seal and the cable, and finally achieving a waterproof and dustproof effect. Refer to the attached Figure 4 In the figure, the cone 33 is deformed toward the inner side of the through hole 31 to form a protrusion 330 under the action of the extension portion 41. The protrusion 330 in the figure is only for illustration. In fact, when the through hole 31 is penetrated by the cable 5, it is not necessarily in the shape of the protrusion 330 in the figure, but it has a deformation force toward the through hole 31, so that the protrusion 330 is tightly against the cable 5.

[0029] By using the seal 3 with the tapered portion 33, the axial force generated when connecting the first shell 1 and the second shell 2 is converted into a radial compressive deformation force component along the tapered portion 33. During the connection process between the first shell 1 and the second shell 2, the compressive deformation force gradually increases, which reduces the connection difficulty and can achieve a good sealing effect, while also increasing the use range of the cable outer diameter. In this embodiment, the outer diameter of the tail 35 of the seal 3 is slightly smaller than the inner diameter of the cable outer tube 4, so that the tail 35 is embedded in the inner side of one end of the cable outer tube 4, further improving the sealing performance.

[0030] During actual operation, the connector nut 7 is sleeved against the shoulder 8 at the front end of the plug 6, and the cable 5 is located on the inner side of the cable outer tube 4. After the cable 5 is passed through the wire pressing plate 9 and the inner hole of the first shell 1, the through hole 31 of the seal 3, and the inner hole of the second shell 2 in sequence, the core wire of the cable 5 is connected to the Pin of the plug 6 in place according to the preset wiring definition; then, the front end of the second shell 2 is aligned with the shoulder 8 at the rear end of the plug 6, and the shoulder 8 has an external thread. The internal thread of the second shell 2 is connected to the external thread of the shoulder of the plug 6, and the second shell 2 is gradually rotated so that the second shell 2 gradually approaches the plug 6 until it is screwed into place. Next, the embedding section 34 of the seal 3 is pushed and embedded into the inner wall of the second shell 2 along the cable axis (-X direction), and the limiting portion 32 gradually abuts against the rear end of the second shell 2. Then, the front end of the first shell 1 is aligned with the rear end of the second shell 2, so that the internal thread of the first shell 1 is connected to the external thread of the second shell 2. The first shell 1 is rotated so that the first shell 1 gradually approaches the second shell 2. The extension portion 41 of the cable outer tube gradually abuts against the cone 33 under the action of the stop portion 11 of the first shell 1. The tail 35 of the seal 3 is embedded in the inner side of one end of the cable outer tube 4. The first shell 1 is continued to be rotated so that the extension portion 41 is tightly abutted against the cone 33, so that the cone 33 is deformed toward the inner side of the through hole 31. After the connection between the first shell 1 and the second shell 2 is completed, the cone 33 produces the maximum deformation, thereby sealing the contact surface between the cable outer tube, the seal, and the cable, and finally achieving a waterproof and dustproof sealing effect.

[0031] The utility model also provides another embodiment of a cable connector assembly, comprising a first shell 1, a second shell 2, a sealing member 3 and a cable outer tube 4, wherein the first shell 1 is detachably connected to the second shell 2, the sealing member 3 is disposed between the first shell 1 and the second shell 2, and the cable outer tube 4 is connected to the first shell 1; the sealing member 3 comprises a through hole 31 extending in the axial direction, a limiting portion 32 and abutting section 33, and when the first shell 1 is connected to the second shell 2, the limiting portion 32 abuts against the second shell 2; a stop portion 11 is provided in the first shell 1, one end of the cable outer tube 4 is disposed in the first shell 1, and one end of the cable outer tube 4 has an extending portion 41, and the extending portion 41 extends radially in the first shell 1 and abuts against the inner side of the stop portion 11 of the first shell 1, and when the first shell 1 is connected to the second shell 2, the extending portion 41 abuts against the abutting section 33, so that the abutting section 33 is deformed toward the inner side of the through hole 31. In this embodiment, the abutment section 33 is a cone, and the radial dimension of the cone gradually decreases from front to back. When the first shell 1 is rotated and connected to the second shell 2, the stop portion 11 gradually approaches the seal 3 until it abuts against the cone. After the first shell 1 and the second shell 2 are completely connected, the stop portion 11 tightly abuts against the cone, causing the cone to deform toward the inside of the through hole 31, thereby achieving a sealing effect.

[0032] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cable connector assembly, It is characterized in that It includes a first shell, a second shell and a sealing member, wherein the first shell is detachably connected to the second shell, and the sealing member is placed between the first shell and the second shell; the sealing member includes a through hole, a limiting portion and a cone portion extending along the axial direction, and when the first shell is connected to the second shell, the limiting portion abuts against the second shell; a stop portion is provided in the first shell, and when the first shell is connected to the second shell, the stop portion abuts against the cone portion, so that the cone portion is deformed toward the inner side of the through hole.

2. A cable connector assembly according to claim 1, It is characterized in that The sealing element is made of elastic material; the radial dimension of the cone portion gradually decreases from front to back.

3. The cable connector assembly according to claim 1, It is characterized in that The first shell is provided with an internal thread, the second shell is provided with an external thread matched with the internal thread of the first shell, and the first shell is threadedly connected to the second shell.

4. The cable connector assembly according to claim 1, It is characterized in that The sealing member comprises an embedding section located at the front side, and the embedding section can be snapped onto the inner side of the second shell.

5. A cable connector assembly according to claim 4, It is characterized in that The limiting portion is located at the rear side of the embedding section, and the radial dimension of the limiting portion is larger than that of the embedding section; when the first shell is connected to the second shell, the limiting portion abuts against the end of the second shell.

6. The cable connector assembly according to claim 5, It is characterized in that The cone portion is located at the rear side of the limiting portion, and the radial dimension of the cone portion gradually decreases from front to back.

7. The cable connector assembly according to claim 1, It is characterized in that It also includes a cable outer tube, one end of which is placed in the first shell, and one end of which has an extension portion, which extends radially in the first shell and abuts against the inner side of the stop portion of the first shell. When the first shell is connected to the second shell, the extension portion abuts against the cone portion, causing the cone portion to deform toward the inner side of the through hole.

8. The cable connector assembly according to claim 7, It is characterized in that The sealing component comprises a tail portion, and the tail portion is embedded in the inner side of one end of the cable outer tube.

9. The cable connector assembly according to claim 4, It is characterized in that The front end of the embedded section has an arc-shaped transition section.

10. A cable connector assembly, It is characterized in that It includes a first shell, a second shell, a sealing member and a cable outer tube, wherein the first shell is detachably connected to the second shell, the sealing member is placed between the first shell and the second shell, and the cable outer tube is connected to the first shell; the sealing member includes a through hole, a limiting portion and a supporting section extending in the axial direction, and when the first shell is connected to the second shell, the limiting portion abuts against the second shell; a stopping portion is provided in the first shell, one end of the cable outer tube is placed in the first shell, and one end of the cable outer tube has an extending portion, and the extending portion extends radially in the first shell and abuts against the inner side of the stopping portion of the first shell, and when the first shell is connected to the second shell, the extending portion abuts against the supporting section, so that the supporting section is deformed toward the inner side of the through hole.

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