CN203205627U - RJ45/RJ11 connector with fixing arm difficult to break - Google Patents

Abstract

The utility model provides an RJ45 or RJ11 connector, which uses polyamide resin or polyoxymethylene resin to form the fixed arm part of the connector or the whole connector including the fixed arm, even if the fixed arm is deformed by more than 90 degrees, it will not Loss of elasticity ensures engagement with the connector.

Description

RJ45, RJ11 connectors with fixed arms that are not easy to break

technical field

The utility model relates to a connector with a fixed arm of modular jacks such as RJ11 suitable for telephone lines or RJ45 suitable for network cables. the

Background technique

The RJ45 interface is a standardized socket for data transmission. The common application is network data transmission, that is, the network cable interface. The RJ45 connector is a standardized plug corresponding to the RJ45 interface, commonly known as "crystal head". As shown in Figure 1 (A) and (B), the connector (100) is composed of a fixed arm part (120, 130) The body portion (110) of the pin constitutes. Likewise, an RJ11 connector is a standardized plug counterpart to the RJ11 interface, but is commonly used on telephone lines. the

Conventional connectors are usually made of polycarbonate (PC) integrally molded body and fixed arm part. However, due to its structural reasons, the fixed arm is easy to be bent. Once it is bent to more than 90 degrees, it will lose its elasticity even if it returns to the original position, so that the engagement with the connector body will become weak, or the fixed arm will be broken and the connector will be damaged. Easy to loosen. the

In order to solve the above problems, in the prior art, a connector that improves the structure of the fixed arm part is proposed (Patent Documents 1 and 2), and elastic parts are used to stick the fixed arm to the body to limit the connection of the fixed arm's bending angle device (Patent Document 3), the socket is provided with a structure that can be fixed inside even if the fixing arm of the connector is broken (Patent Document 4), and the fixing arm is provided as a replaceable type that can be detached from the connector body Fixed arms (Patent Documents 5-8), or a slidable sheath on the network cable to protect the connector and fixed arm (Patent Document 9). However, these methods above all need to change the structure of the existing connectors, sockets and/or network cables, and there is still room for improvement in terms of productivity, operability and economy. the

Patent Document 1: JP3135442U

Patent document 2: JP3064910U

Patent Document 3: JP Kokai Hei 11-16653A

Patent Document 4: JP Patent Application No. 2009-211913A

Patent Document 5: JP Patent Application No. 2009-104906A

Patent Document 6: JP Patent Application No. 2008-181671A

Patent Document 7: JP Patent Application No. 2008-4454A

Patent Document 8: JP Patent Application No. 2001-68213A

Patent Document 9: JP Patent Application No. 2000-100511A

Utility model content

In order to overcome the above-mentioned problems in the prior art, the utility model provides an RJ45 connector whose fixed arm is not easy to break. the

The utility model provides an RJ45 connector, which is composed of a main part including a fixed arm and a plurality of pins, and is composed of a resin body with a bending elastic coefficient of more than 25000kgf/cm2 measured based on the bending test method ASTM D790 stipulated by ASTM. obtained by molding. the

Further, the above-mentioned resin is polyamide resin or polyoxymethylene resin (POM). the

Furthermore, the molding temperature range of the above resin is 180-280°C, the cooling time range is 13s-23s (s is second), the injection speed is 30-110M/s, and the injection pressure is 15-100Kg/cm2. For polyamide resins, the preferred molding temperature range is 240-280°C, the cooling time range is 13s-23s, the injection speed is 30-50M/s, the injection pressure is 15-40Kg/cm2, and the mold temperature range is 55-65 ℃. For polyoxymethylene resin, the preferred molding temperature range is 180-210°C, the cooling time range is 13s-23s, the injection speed is 50-110M/s, the injection pressure is 25-100Kg/cm2, and the mold temperature range is 55-65°C . the

The utility model also provides an RJ45 connector, which is composed of a main part including a fixed arm and a plurality of pins. The fixed arm is determined based on the bending test method ASTM D790 stipulated by ASTM, and the bending elastic coefficient is more than 25000kgf/cm2 resin composition. the

Further, the above-mentioned resin is polyamide resin or polyoxymethylene resin. the

Furthermore, the molding temperature range of the above resin is 180-280°C, the cooling time range is 13s-23s, the injection speed is 30-110M/s, and the injection pressure is 15-100Kg/cm2. For polyamide resins, the preferred molding temperature range is 240-280°C, the cooling time range is 13s-23s, the injection speed is 30-50M/s, the injection pressure is 15-40Kg/cm2, and the mold temperature range is 55-65 ℃. For polyoxymethylene resin, the preferred molding temperature range is 180-210°C, the cooling time range is 13s-23s, the injection speed is 50-110M/s, the injection pressure is 25-100Kg/cm2, and the mold temperature range is 55-65°C . the

For resin products with a flexural modulus of 25000kgf/cm2 or more, please refer to the product information of Asahi Kasei Chemicals, for example, Table 2 of http://www.akchem.com/ETB55. the

ASTM D790 is a standard test method for flexural properties of unreinforced and reinforced plastics and electrical insulating materials. For specific measurement methods, conditions and equipment, please refer to http://www.djklab.com/contents/exam/butsusei/mage/index.htm and http://www.astm.org/Standards/D790.htm. the

The utility model uses polyamide resin or polyoxymethylene resin to mold the fixed arm part of the connector or the whole connector including the fixed arm. Even if the fixed arm is deformed by more than 90 degrees, it will not lose its elasticity and can ensure engagement with the connector. the

Description of drawings

Figure 1(A) is a side view of an existing connector

Figure 1(B) is a top view of the existing connector

Figure 2 (A) is a side view of the connector of the present utility model

Figure 2 (B) is a top view of the connector of the present utility model

Fig. 3 is the schematic diagram of 180 degree bending test in the embodiment

Explanation of reference signs

100—connector, 110—main body, 120—connection part of fixed arm and main body, 130—movable part of fixed arm

Detailed ways

The utility model is described in more detail below in conjunction with embodiment and accompanying drawing. the

As shown in Figure 2 (A), (B), the utility model uses polyamide resin or polyoxymethylene resin to form the fixed arms 120, 130 of the connector 100, that is, the deep arms 120, 130 shown in Figure 2 (A), (B) The colored part, or use polyamide resin or polyoxymethylene resin integral molding to obtain the entire connector 100 including the fixing arm. the

Nylon (NYLON), polyoxymethylene resin (POM), polycarbonate (PC) and polyvinyl chloride (PVC) shown in Table 1 were used as materials A, B, C and D, respectively. Injection molding was performed under the conditions shown in Table 1, and the connector was integrally molded. The resulting connector was subjected to a 180-degree bending test. In the 180-degree bending test, the fixed arm is bent to 180 degrees and then returned to the original position, which is recorded as one time, and the number of times of bending when various materials are completely broken is recorded. The specific bending test results are shown in Table 2 to Table 4. the

Table 1

*Bending modulus of elasticity is measured based on the bending test method ASTM D790 stipulated by ASTM

Table 2

table 3

Table 4

It can be seen from Table 1-4 that conventional materials can only withstand 20 times of bending on average, while polyamide-based resins can withstand an average of more than 500 times of bending, and POM can withstand an average of 200 times of bending . Moreover, when the PC is used, the fixed arm loses its elasticity after being bent once, and its fixing function is obviously reduced. the

Claims (6)

1. a RJ45 or RJ11 connector is characterized in that: by fixed arm with comprise the main part of a plurality of pins and constitute that the elasticity of flexure coefficient of being measured by the bend test method AS TM D790 based on the ASTM regulation is 25000kgf/cm ²Above resin global formation and obtaining.

2. RJ45 according to claim 1 or RJ11 connector, it is characterized in that: described resin is polyamide-based resin or acetal resin.

3. RJ45 according to claim 1 and 2 or RJ11 connector, it is characterized in that: the temperature of moulding is 180-280 ℃, and be 13s-23s cooling time, and injection moulding speed is 30-110M/s, and injection pressure is 15-100Kg/cm ², mold temperature is 55-65 ℃.

4. a RJ45 or RJ11 connector is characterized in that: by fixed arm with comprise the main part of a plurality of pins and constitute that fixed arm is 25000kgf/cm by the elasticity of flexure coefficient that the bend test method AS TM D790 based on the ASTM regulation measures ²Above resin constitutes.

5. RJ45 according to claim 4 or RJ11 connector, it is characterized in that: described resin is polyamide-based resin or acetal resin.

6. according to claim 4 or 5 described RJ45 or RJ11 connector, it is characterized in that: the temperature of moulding is 180-280 ℃, and be 13s-23s cooling time, and injection moulding speed is 30-110M/s, and injection pressure is 15-100Kg/cm ², mold temperature is 55-65 ℃.

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