Plastic package cable assembly

Abstract

A plastic package cable assembly comprises a plastic package body, a connector and a cable, the connector is provided with an insulating shell and a contact piece installed in the insulating shell, the contact piece is electrically connected with the cable, an annular groove is formed in the periphery of the tail of the insulating shell in the circumferential direction, one end of the plastic package body is combined and clamped into the annular groove in a plastic package mode and wraps the tail of the insulating shell, and the other end of the plastic package body is connected with the cable. And the other end of the plastic package body is fixedly connected with the cable plastic package. The connector tail sleeve and the glue pouring structure are replaced by the plastic package body, one end of the plastic package body is clamped into the annular groove in an injection molding mode, the other end of the plastic package body is connected with the cable in a plastic package mode, the binding force is high, the sealing effect is achieved, and the sealing performance stability is high.

Description

Technical Field

[0001] The utility model relates to the field of connector cable connection, in particular to a plastic-sealed cable assembly. Background Art

[0002] At present, the solenoid valve interface of the underground electro-hydraulic control system of the mine is connected by installing a curved sleeve at the end of the connector. Figure 1 As shown in the figure, the sealant is injected between the sleeve and the cable to fix the cable and realize the sealing between the product and the outside world. However, since the injection process is uncontrollable, the injection area is often not filled properly, resulting in sealing failure, affecting the normal operation of the connector, or even complete failure, which in turn affects the stability of related equipment and systems, and even causes safety accidents. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a plastic-sealed cable assembly, which improves the sealing performance and has good stability.

[0004] In order to achieve the above-mentioned technical purpose, the technical solution adopted is: a plastic-encapsulated cable assembly, including a plastic-encapsulated body, a connector and a cable, the connector is provided with an insulating shell and a contact installed in the insulating shell, the contact and the cable are electrically connected, an annular groove is provided on the circumference of the outer periphery of the rear end of the insulating shell, one end of the plastic-encapsulated body is plastic-encapsulated and clamped in the annular groove and wrapped around the rear end of the insulating shell, and the other end of the plastic-encapsulated body is plastic-encapsulated and fixedly connected to the cable.

[0005] Furthermore, the cable includes a conductor and an insulating sleeve arranged outside the conductor, the conductor is connected to the contact piece in a one-to-one correspondence, and the insulating sleeve is plastic-sealed and fixedly connected to the plastic-sealed body.

[0006] Furthermore, the plastic sealing body is composed of an integrally formed plastic sealing head and a plastic sealing net tail, the plastic sealing head is connected to the tail of the connector, and the plastic sealing net tail is connected to the cable.

[0007] Furthermore, the bottom angle of the annular groove is a right angle.

[0008] Furthermore, a groove for the plastic-sealed body to be inserted into the plastic-sealed body is provided below the annular groove.

[0009] Furthermore, a step extending from the rear of the insulating shell toward the outgoing line direction.

[0010] Furthermore, two columns are arranged on the top surface of the rear portion of the insulating housing, and a spacer for bundling the wires is arranged between the two columns.

[0011] Furthermore, one side opposite to the other side of the two pillars is an arc-shaped surface.

[0012] Furthermore, the plastic package body and the insulating shell are provided with interconnected through holes, the direction of the through holes is consistent with the plug-in direction of the connector, and screws for fixing the plug-in end that is mated with the connector are provided in the through holes.

[0013] Furthermore, a first rubber pad is provided at the through hole of the plastic package body and is sleeved on the screw with an interference fit.

[0014] Furthermore, a second rubber pad which is sleeved on the insulating shell with an interference fit is tightly provided below the plastic package body connected to the connector.

[0015] Furthermore, the end of the contact piece connected to the cable is exposed from the top surface of the rear portion of the insulating housing and is bent.

[0016] The beneficial effects of the utility model are:

[0017] 1. The connector tail sleeve and the glue filling structure are replaced by a plastic sealing body. One end of the plastic sealing body is injection molded into the ring groove, and the other end is connected to the cable plastic seal. The bonding force is strong, the sealing effect is achieved, and the sealing performance is highly stable.

[0018] 2. The cable's own plastic-sealed insulating sleeve can be combined with the plastic-sealed body to form an integrated structure, which makes the appearance neater. When combined and fixed with the plastic-sealed body, the sealing effect is better.

[0019] 3. The plastic sealing body is integrated, and the tail of the plastic sealing net is connected to the cable, which can adapt to the pulling and deformation of the cable, and will not cause the plastic sealing body to separate from the cable, and has strong sealing adaptability.

[0020] 4. The bottom angle of the ring groove is set to a right angle, which can make the bonding force between the plastic package and the connector stronger.

[0021] 5. To prevent the plastic package from separating from the connector and cable, adding a groove under the ring groove can further enhance the bonding strength.

[0022] 6. Construct a step on the connector toward the wire outlet direction to reduce the force transmitted to the joint between the connector and the plastic package when pulling the wire, thereby improving the ability of the joint surface to resist cracking.

[0023] 7. Add two columns to bundle the wires connected to the contact parts, fix the wires in the gap between the two columns, and prevent the plastic package from being ejected into the mold under the molding pressure during the plastic packaging process, causing the wires to move. Further define the surface shape of the opposite sides of the two columns to prevent wire bundle damage and make the bundle more reasonable.

[0024] 8. To facilitate the fixation of the plastic-sealed cable assembly and the plug-in end, screws can be added to achieve pluggable and removable screw fixation without affecting the connection between the connector and the cable in the assembly, nor the seal in the assembly. To further improve the sealing effect, a first rubber pad with interference fit can be added to the bottom of the nut of the stud to achieve a better sealing effect.

[0025] 9. Add a second rubber pad to seal the connector and the mating end.

[0026] 10. In order to prevent the wire from being impacted by the pressure of the plastic sealing during the plastic sealing process and falling off from the contact piece, the contact piece is changed from the existing vertical setting to a bent setting, which is also convenient for welding the wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a cross-sectional view of a cable assembly in the prior art;

[0028] Figure 2 is a cross-sectional view of the present invention;

[0029] Figure 3 is an external stereogram of the present invention;

[0030] Figure 4 A schematic diagram of a connector according to the present invention;

[0031] Figure 5 It is a schematic diagram of the splitting of the present invention;

[0032] Figure 6 for Figure 5 The left side view of the connector;

[0033] Figure 7 for Figure 5 Right side view of the connector;

[0034] In the figure:

[0035] 1. Plastic sealing body, 101. Plastic sealing head, 102. Plastic sealing net tail;

[0036] 2. Connector, 201. Insulating housing, 202. Contact, 2011. Ring groove, 2012. Groove, 2013. Step, 2014. Post, 2015. Spacer;

[0037] 3. Cable, 301, wire, 302, insulation sleeve;

[0038] 4. Through hole, 5. Screw, 6. First rubber pad, 7. Second rubber pad, 8. Sleeve, 9. Glue pouring. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0040] It should be noted that the illustrations provided in this embodiment are only used to illustrate the basic concept of the present invention in a schematic manner. Therefore, the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0041] The structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0042] The directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “middle”, “inner”, “outer”, “radial”, and “circumferential” cited in this specification are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of simplifying the description. They 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 should not be understood as limiting the present invention.

[0043] like Figure 2 , Figure 5 As shown, a plastic-encapsulated cable assembly includes a plastic-encapsulated body 1, a connector 2 and a cable 3. The connector 2 is used to be plugged into a mating plug end to achieve electrical connection or data transmission. The connector 2 is provided with an insulating shell 201 and a plurality of contacts 202 installed in the insulating shell 201. The number and structure of the contacts 202 are related to the mating plug end (in other embodiments, the number of the contacts 202 may also be one). One end of the contact 202 is electrically connected to the cable 3, and the other end is used to be connected to the mating plug end. Figure 3 , Figure 4 As shown, the contact 202 is a sheet structure, and the insulating housing 201 is provided with mounting holes that pass through the upper and lower sides for mounting the contact 202 in the plug-in direction. The end of the insulating housing 201 used for plugging with the plug-in end is the head, and the other end (the end connected to the cable) is the tail. The tail of the insulating housing 201 is provided with an annular groove 2011 in the circumferential direction. One end of the plastic-encapsulated body 1 is plastic-encapsulated and inserted into the annular groove 2011 to cover the tail of the insulating housing 201. The other end of the plastic-encapsulated body 1 is plastic-encapsulated and fixedly connected to the cable 3. This structure ensures the sealing of both ends, and by adding the annular groove 2011, the bonding force between the plastic-encapsulated body 1 and the connector 2 is enhanced. The outlet direction and the plug-in direction can be coincident or perpendicular. Figure 3The wire outlet direction and the plug-in direction are perpendicular to each other, so the corresponding plastic package body 1 is a bent structure. When the wire outlet direction coincides with the plug-in direction, the plastic package body 1 is a straight structure.

[0044] The cable 3 includes a plurality of wires 301 and an insulating sleeve 302 disposed outside the plurality of wires 301. The insulating sleeve 302 is wrapped around the outer sides of the plurality of wires 301 by plastic packaging and can be fixed as a whole with the plastic packaging body. Figure 3 As shown, the insulating sleeve 302 is fixedly connected to the plastic package body 1 by plastic sealing, and plays the role of insulation and sealing. Compared with the glue potting in the prior art, the bonding force is more stable and the sealing effect is better. The multiple wires 301 are connected to the multiple contacts 202 in a one-to-one correspondence. If the number of wires 301 is four, the number of contacts is four (in other embodiments, the multiple wires 301 can also be connected to the same contact 202, and the same wire 301 can also be connected to multiple contacts 202).

[0045] like Figure 3 As shown, the plastic-sealed body 1 is composed of an integrally formed plastic-sealed head 101 and a plastic-sealed net tail 102. The plastic-sealed head 101 is connected to the tail of the connector 2, and the plastic-sealed net tail 102 is connected to the cable 3. The structural form of the plastic-sealed net tail 102 can be deformed by pulling the cable 3, and can better adapt to the cable. It has better adaptability and does not affect the bonding force between the plastic-sealed body 1 and the connector 2.

[0046] like Figure 2 As shown, the bottom angle of the annular groove 2011 is a right angle. Compared with bottom angles of other angles, the annular groove 2011 can strengthen the bonding force between the plastic package body 1 and the insulating shell 201 .

[0047] like Figure 6 , Figure 7 As shown, a groove 2012 for the plastic-sealed body 1 to be plastic-sealed and snapped into is provided below the annular groove 2011. The groove 2012 is located below the annular groove 2011 on one side of the wire-outgoing direction or on the side opposite to the wire-outgoing direction. The groove 2012 opposite to the wire-outgoing direction can partially overlap with the annular groove 2011, both of which can further enhance the bonding force and prevent the plastic-sealed body 1 below the annular groove from being separated from the connector 2 when the cable is pulled.

[0048] like Figure 2 , Figure 4 As shown, a step 2013 extending toward the line outlet direction extends from the rear end of the insulating housing 201, which effectively reduces the force transmitted to the joint between the connector and the plastic package body when the cable is pulled, thereby improving the crack resistance of the joint surface.

[0049] like Figure 4As shown, two columns 2014 are arranged on the top surface of the rear end of the insulating shell 201, and a gap 2015 for bundling multiple wires 301 together is arranged between the two columns 2014. After welding, all the wires 301 can be gathered in the gap 2015 around the columns 2014, which effectively prevents the wires from moving due to the rubber being injected into the mold under the molding pressure during the product plastic sealing process.

[0050] like Figure 4 As shown, the opposite sides of the two columns 2014 are arc-shaped surfaces, which can bundle the wires more reasonably and prevent the wires from being bent and damaged. The columns 2014 can be cylindrical. In other embodiments, the columns 2014 can also be protrusions extending from the top surface of the rear end of the insulating shell 201.

[0051] like Figure 2 As shown, the plastic package body 1 and the insulating shell 201 are provided with a connected through hole 4, the direction of the through hole 4 is consistent with the plug-in direction of the connector 2, and a screw 5 for fixing the plug-in end that is mating with the connector 2 is provided in the through hole 4. When the connector 2 is plugged with the plug-in end, a threaded hole is provided on the plug-in end. By turning the screw, the component and the plug-in end can be fixed as one, which is convenient for installation and disassembly. If the screw 5 is not used, there are other plug-in fixing structures between the connector and the plug-in end, such as a buckle, a matching slot, etc.

[0052] like Figure 2 As shown, the through hole 4 of the plastic package body 1 is provided with a first rubber pad 6 which is sleeved on the screw 5 with an interference fit, so that the through hole insertion of the screw 5 can be blocked to ensure the sealing at the position of the screw through hole. The lower part of the plastic package body 1 connected to the connector 2 is tightly provided with a second rubber pad 7 which is sleeved on the insulating housing 201 with an interference fit, and the second rubber pad 7 cooperates with the plug end to play the role of sealing the connector 2 and the plug end when plugged in.

[0053] like Figure 4 As shown, the end of the contact 202 connected to the cable 3 is exposed from the top surface of the rear end of the insulating housing 201 and is bent. The original contact 202 is vertically arranged during the glue injection, and now it is improved to bend the end of the contact 202. There is no restriction on the bending direction, and the optimal bending angle is 90 degrees, which is convenient for welding with the wire 301 on the upper surface of the bent part. At the same time, the impact of the plastic sealing pressure on the welding point is reduced to prevent the contact and the wire from being disconnected.

[0054] The above are only preferred embodiments of the present invention and are not intended to limit or restrict the present invention. For researchers or technicians in this field, the present invention may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection declared by the present invention.

Claims

1. A plastic-encapsulated cable assembly, characterized in that: The invention comprises a plastic-encapsulated body (1), a connector (2) and a cable (3); the connector (2) is provided with an insulating shell (201) and a contact piece (202) installed in the insulating shell (201); the contact piece (202) and the cable (3) are electrically connected; an annular groove (2011) is provided in the circumferential direction of the outer periphery of the rear end of the insulating shell (201); one end of the plastic-encapsulated body (1) is plastic-encapsulated and snap-fitted into the annular groove (2011) to cover the rear end of the insulating shell (201); and the other end of the plastic-encapsulated body (1) is plastic-encapsulated and fixedly connected to the cable (3).

2. The plastic-encapsulated cable assembly according to claim 1, characterized in that: The cable (3) comprises a conductor (301) and an insulating sleeve (302) arranged outside the conductor (301); the conductor (301) is connected to the contact piece (202) in a one-to-one correspondence; and the insulating sleeve (302) is plastic-sealed and fixedly connected to the plastic-sealed body (1).

3. The plastic-encapsulated cable assembly according to claim 1, characterized in that: The plastic encapsulation body (1) is composed of an integrally formed plastic encapsulation head (101) and a plastic encapsulation net tail (102); the plastic encapsulation head (101) is connected to the tail of the connector (2), and the plastic encapsulation net tail (102) is connected to the cable (3).

4. The plastic-encapsulated cable assembly according to claim 1, characterized in that: The bottom angle of the ring groove (2011) is a right angle.

5. A plastic-encapsulated cable assembly according to claim 1 or 4, characterized in that: A groove (2012) for snapping the plastic-sealed body (1) into place is provided below the annular groove (2011).

6. The plastic-encapsulated cable assembly according to claim 1, characterized in that: A step (2013) extending toward the wire outlet direction is formed at the rear of the insulating housing (201).

7. The plastic-encapsulated cable assembly according to claim 2, characterized in that: Two upright posts (2014) are arranged on the top surface of the rear portion of the insulating housing (201), and a spacer (2015) for bundling the wires (301) is arranged between the two upright posts (2014).

8. The plastic-encapsulated cable assembly according to claim 7, characterized in that: The two columns (2014) have arc-shaped surfaces on opposite sides.

9. The plastic-encapsulated cable assembly according to claim 1, characterized in that: The plastic package body (1) and the insulating shell (201) are provided with a communicating through hole (4), the direction of the through hole (4) being consistent with the plugging direction of the connector (2), and a screw (5) for fixing the plugging end for mating with the connector (2) is provided in the through hole (4).

10. The plastic-encapsulated cable assembly according to claim 9, characterized in that: A first rubber pad (6) is provided at the insertion end of the through hole (4) of the plastic package body (1) and is sleeved on the screw (5) with an interference fit.

11. The plastic-encapsulated cable assembly according to claim 1, characterized in that: A second rubber pad (7) which is sleeved on the insulating housing (201) with an interference fit is tightly provided below the plastic package body (1) connected to the connector (2).

12. The plastic-encapsulated cable assembly according to claim 1, characterized in that: The end of the contact piece (202) connected to the cable (3) is exposed from the top surface of the rear end of the insulating housing (201) and is bent.

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