Connector

Abstract

The utility model discloses a connector, and belongs to the field of wire harnesses. Comprising a fixing member, a connection terminal, a wire, a shielding member and a sealing member. The fixing component comprises a body part and a groove part formed at one end of the body part; one end of the connecting terminal is located in the groove part, and the other end penetrates to the other end of the body part; the end part of the wire is electrically connected with the other end of the connecting terminal; the shielding component comprises a connecting part arranged on the outer surface of the body part, and a filling part axially extending along the connecting part and suddenly changing until the inner diameter is greater than that of the connecting part; and the sealing component is filled in a semi-closed cavity formed between the filling part and the outer end surface of the body part, and wraps an electric connection point of the connection terminal and the wire. According to the utility model, the diameter of the shielding component is increased, and the length of the shielding component is reduced, so that a dispensing needle can conveniently extend to the root part during dispensing, the dispensing quality is ensured, a welding spot cannot be exposed, and the forming quality of a sealing component is improved.

Description

Technical Field

[0001] The utility model belongs to the field of wire harnesses, in particular to a connector. Background Art

[0002] Electrical connectors include plug-type electrical connectors (male) and socket-type electrical connectors (female). When in use, the plug-type electrical connector and the socket-type electrical connector need to be connected together with a connecting nut after being plugged in. For electrical connectors in the food industry, since related products need to be cleaned, they need to be repeatedly rinsed at high temperatures and refrigerated at low temperatures during the cleaning process, so their waterproof performance requirements are relatively high.

[0003] See attached Figure 2 , a connector designed and produced by our company, including: PIN pin 210, wire 220, plastic shell 230, nut 240, shielding copper tube 250, glue 260 and plastic coating 270. In order to ensure the waterproof performance of the connector, the shielding tube is designed to be a slender structure to ensure that enough glue is filled to protect the solder joints and prevent water vapor from entering, thereby improving the sealing and waterproof properties of the entire connector. However, this also causes the glue needle to be unable to extend into the root of the shielding copper tube 250, making the entire glue dispensing process very troublesome.

[0004] It should be noted that this background technology section only provides background information related to the present disclosure and is not necessarily prior art. Utility Model Content

[0005] In order to overcome the above technical defects, the utility model provides a connector to solve the problems involved in the background technology.

[0006] The utility model provides a connector, comprising:

[0007] The fixing member comprises a main body portion and a groove portion formed at one end of the main body portion;

[0008] A connecting terminal, one end of which is located in the groove portion and the other end of which passes through the other end of the main body portion;

[0009] a wire, an end of which is electrically connected to the other end of the connection terminal;

[0010] The shielding member comprises a connecting portion provided on the outer surface of the main body portion, and a filling portion extending axially along the connecting portion and suddenly changing to a filling portion whose inner diameter is larger than the inner diameter of the connecting portion;

[0011] The sealing component is filled in a semi-enclosed cavity formed between the filling portion and the outer end surface of the main body portion, and wraps the electrical connection point between the connection terminal and the wire.

[0012] Preferably or optionally, it also includes:

[0013] The connecting member is arranged on the outer surface of the groove portion.

[0014] Preferably or optionally, the outer surface of the connecting member is provided with threads and / or sliding grooves and / or buckles for connection.

[0015] Preferably or optionally, the connecting member is connected to the shielding member.

[0016] Preferably or optionally, it also includes:

[0017] The plastic-coating component is fixed on the outer surface of the shielding component and extends along the outer surface of the shielding component to a partial area covering the sealing component and the wire.

[0018] Preferably or optionally, the electrical connection point between the connecting terminal and the wire is located on the axial symmetry axis of the filling portion or near the axial symmetry axis of the filling portion.

[0019] Preferably or optionally, the connecting terminal and the wire are electrically connected by plugging, crimping, welding or twisting.

[0020] Preferably or optionally, the sealing member is made of acrylic resin material.

[0021] Preferably or optionally, the shielding component is made of metal and has a cylindrical structure; the fixing component and the plastic-coated component are both made of synthetic resin material.

[0022] Preferably or optionally, the connecting terminal is a PIN pin.

[0023] The utility model relates to a connector, which has the following beneficial effects compared with the prior art: the utility model enlarges the diameter of the shielding component and shortens the length of the shielding component, so that the glue dispensing needle can be extended to the root during glue dispensing, thereby ensuring the quality of glue dispensing, while ensuring that the solder joints are not exposed, thereby improving the molding quality of the sealing component.

[0024] At the same time, the acrylic resin of the utility model is selected as the sealing component, which has excellent waterproof performance, can be domestically produced, has lower cost, and has a more stable delivery cycle. Moreover, the acrylic resin has a similar cold and hot deformation amount to the shielding component, and has excellent resistance to cold and hot water impact, and can simultaneously meet the dual requirements of temperature impact resistance and waterproofness. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the connector in the utility model.

[0026] Figure 2 It is a structural schematic diagram of an existing connector.

[0027] The reference numerals are: 100, connector; 110, fixing member; 111, body portion; 112, groove portion; 120, connecting terminal; 130, wire; 140, shielding member; 141, connecting portion; 142, filling portion; 143, protrusion; 150, sealing member; 160, plastic-coated member; 170, connecting member;

[0028] 210, PIN needle; 220, wire; 230, plastic shell; 240, nut; 250, shielded copper tube; 260, glue; 270, plastic coating. DETAILED DESCRIPTION

[0029] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0030] See attached Figure 1 A connector 100 includes: a fixing member 110, a connecting terminal 120, a wire 130, a shielding member 140, a sealing member 150, a plastic-coating member 160 and a connecting member 170.

[0031] The fixing member 110 mainly plays a supporting role. Specifically, the fixing member 110 includes a main body portion 111 and a groove portion 112 formed at one end of the main body portion 111. On the one hand, the cross-sectional shape of the fixing member 110 can be circular, square, rectangular or other special shapes, which can be reasonably selected according to different application scenarios. For the convenience of description, in this embodiment, the fixing member 110 is circular, so the main body portion 111 is cylindrical, and the groove portion 112 is a cylindrical structure. On the other hand, the fixing member 110 can be made of metal material or plastic material. In this embodiment, considering various factors such as safety and cost, preferably, the fixing member 110 is a plastic shell made of synthetic resin material.

[0032] The connection terminal 120 is a plug pin, one end of which is located in the groove 112 and inserted into the socket-type electrical connector 100 (female connector), and the other end of which passes through the other end of the body 111 and is connected to the wire 130 to connect two or three electrical devices together. For those skilled in the art, the connection terminal 120 can reasonably select different types of plug pins, such as straight plug pins, bent plug pins, or spring plug pins. This embodiment selects a PIN pin as the connection terminal 120, which has a simple structure, is easy to process, and has a low manufacturing cost.

[0033] The end of the wire 130 is electrically connected to the other end of the connection terminal 120, and the electrical connection method can be plug-in or crimping or welding or twisting, and the specific selection depends on the structure of the connection terminal 120 and the wire 130. Among them, the wire 130 has a core wire composed of a conductor and an insulating layer covering the outer periphery of the core wire. The wire 130 can be a shielded wire with an electromagnetic shielding structure, or it can be an unshielded wire that does not have an electromagnetic shielding structure. The core wire of this embodiment is a stranded wire made of metal materials such as copper and aluminum, and the insulating layer is formed by extrusion.

[0034] The shielding member 140 is made of metal and is a cylindrical structure. Preferably, the shielding member 140 is a shielding copper tube. Specifically, the shielding member 140 includes a connecting portion 141 arranged on the outer surface of the main body 111, a filling portion 142 extending axially along the connecting portion 141 and suddenly changing to an inner diameter larger than the inner diameter of the connecting portion 141, and a protrusion 143 arranged on the other side of the connecting portion 141. The shielding member 140 is an integrally formed structure, the connecting portion 141 is interference-connected with the main body 111, and the shielding member 140 is connected with the fixing member 110 together. The inner diameter of the filling portion 142 is larger than the inner diameter of the connecting portion 141, and the electrical connection point between the connecting terminal 120 and the wire 130 is located on the axial symmetry axis of the filling portion 142 or near the axial symmetry axis of the filling portion 142. By enlarging the diameter of the shielding component 140 and shortening the length of the shielding component 140 , the glue dispensing needle can be extended to the root during glue dispensing, thereby ensuring the quality of glue dispensing while ensuring that the solder joints are not exposed, thereby improving the molding quality of the sealing component 150 .

[0035] The sealing member 150 is filled in the semi-enclosed cavity formed between the filling portion 142 and the outer end surface of the main body 111, and wraps the electrical connection point between the connecting terminal 120 and the wire 130. Among them, since the length of the shielding member 140 becomes shorter and the diameter becomes larger, the waterproof performance of the sealing member 150 is particularly important. After comparative experiments, the applicant has selected several better resin materials from existing commercially available resins, namely epoxy resin (EVERWIDE JD63-11), polyurethane (BeginorBEPU5102), acrylate (Debon 6486) and hot melt adhesive. The electrical connector 100 obtained from the above four resins is subjected to hot and cold water alternating impact test. The hot and cold water alternating impact is specifically: standing in 0℃ water for 30 minutes, standing in 80℃ water for 30 minutes, this is 1 cycle, and after 15 cycles, the electrical performance test is normal, there is no short circuit between the pins, that is, no water ingress (indicated as "ok" in the table). The specific experimental variables (“√” indicates that the variable is used, and blank indicates that the variable is not used) and the results are shown in the following table:

[0036]

[0037] After experimental verification, the material performance of epoxy resin is poor. After high and low temperature impact, gaps will be generated between the plastic shell and the wiring harness. The polyurethane glue is too thin and easy to leak, and it cannot be operated. Hot melt adhesive has poor adhesion to metal. Acrylic has good high and low temperature impact resistance and has very good adhesion to plastic, metal and wiring harness. Therefore, the sealing component 150 is made of acrylic resin material, which not only has excellent waterproof performance, can be domestically produced, has lower cost, and has a more stable delivery cycle, but also acrylic resin has a similar cold and hot deformation amount as the shielding component 140, has excellent cold and hot water impact resistance, and can simultaneously meet the dual requirements of temperature impact resistance and waterproof.

[0038] The connecting member 170 is arranged on the outer surface of the groove portion 112, and is used to cooperate with the corresponding connecting piece in the socket type electrical connector 100 (female head) to achieve the fixation of the plug type electrical connector 100 (male head) and the socket type electrical connector 100 (female head). In order to improve the structural stability of the entire connector 100, the connecting member 170 is fixedly connected to the protrusion 143 of the shielding member 140. In order to achieve the plug type electrical connector 100 (male head) and the socket type electrical connector 100 (female head), the outer surface of the connecting member 170 is provided with a connecting portion 141 for connection, such as a thread and / or a slide groove and / or a buckle. Of course, for those skilled in the art, there are other reasonable choices, which are not listed here one by one.

[0039] The overmolding member 160 is made of synthetic resin material, and is fixed on the outer surface of the shielding member 140 by overmolding process, and extends along the outer surface of the shielding member 140 to cover the sealing member 150 and the partial area of ​​the wire 130. Thus, liquid such as water can be prevented from penetrating into the interior of the fixing member 110 from the gap between the shielding member 140, the fixing member 110 and the sealing member 150.

[0040] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

Claims

1. A connector, characterized in that: include: The fixing member (110) comprises a main body (111) and a groove (112) formed at one end of the main body (111); A connecting terminal (120), one end of which is located in the groove portion (112) and the other end of which passes through the other end of the main body portion (111); A wire (130), an end of which is electrically connected to the other end of the connection terminal (120); The shielding member (140) comprises a connecting portion (141) arranged on the outer surface of the main body (111), and a filling portion (142) extending axially along the connecting portion (141) and suddenly changing to an inner diameter larger than the inner diameter of the connecting portion (141); The sealing component (150) is filled in a semi-enclosed cavity formed between the filling portion (142) and the outer end surface of the main body portion (111), and wraps the electrical connection point between the connection terminal (120) and the wire (130).

2. The connector according to claim 1, characterized in that: Also includes: A connecting member (170) is arranged on the outer surface of the groove portion (112).

3. The connector according to claim 2, characterized in that: The outer surface of the connecting member (170) is provided with threads and / or sliding grooves and / or buckles for connection.

4. The connector according to claim 2, characterized in that: The connecting member (170) is connected to the shielding member (140).

5. The connector according to claim 1, characterized in that: Also includes: The plastic-coating component (160) is fixed on the outer surface of the shielding component (140) and extends along the outer surface of the shielding component (140) to a partial area covering the sealing component (150) and the conductive wire (130).

6. The connector according to claim 1, characterized in that: The electrical connection point between the connection terminal (120) and the lead (130) is located on the axial symmetry axis of the filling portion (142) or near the axial symmetry axis of the filling portion (142).

7. The connector according to claim 1, characterized in that: The connection terminal (120) and the wire (130) are electrically connected by plugging, crimping, welding or twisting.

8. The connector according to claim 1, characterized in that: The sealing component (150) is made of acrylic resin material.

9. The connector according to claim 1, characterized in that: The shielding component (140) is made of metal and has a cylindrical structure; the fixing component (110) and the plastic-coated component (160) are both made of synthetic resin material.

10. The connector according to claim 1, characterized in that The connection terminal (120) is a PIN pin.

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