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Voltage and current protection device for communication device

A technology for current protection and communication equipment, applied in the field of voltage and current protection devices, can solve problems such as poor contact, coil burnout, and discharge tube damage, and achieve reliable contact effects

Inactive Publication Date: 2019-07-05
天津市向华生产力促进有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its shortcoming is: when overvoltage occurs, the discharge tube discharges and conducts, and the current flows into the ground through the discharge tube
However, before troubleshooting, the discharge tube is always in a discharge state until the discharge tube is damaged
When there is an overcurrent, the overcurrent grounding device acts to make the current flow into the ground. However, since the coil is grounded after the coil, the overload current still flows through the hot coil, and the coil will burn out after a long time.
The above two situations will generate high temperature, which will soften the plastic shell of the protector or even burn it, causing accidents.
In addition, the cross-section of the head of the contact spring of this protector is two semi-circles, because it is difficult to make it into a standard circle during processing, it is easy to cause poor contact when contacting the connector

Method used

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  • Voltage and current protection device for communication device
  • Voltage and current protection device for communication device

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Embodiment

[0018] Such as figure 1 As shown, the present invention provides a voltage and current protection device for communication equipment, including a housing 1 and a plug 2, and the housing 1 is sequentially placed in an overvoltage protector 3, an overcurrent protector 4 and an alarm 5 , the overvoltage protector 3 includes a gas discharge tube 6 and an overvoltage grounding device 7, the overvoltage grounding device 7 includes a sleeve 8, a fusible sheet 9 and a signal rod 10, and the overcurrent protector 4 includes a hot wire ring 11 and overcurrent grounding device 12, the alarm 5 is on the top of the shell 1, and the plug 2 is on the bottom of the shell 1.

[0019] The sleeve 8 is copper.

[0020] The fusible sheet 9 is made of lead-tin material, and its melting temperature is 185°C.

[0021] The overcurrent grounding device 12 includes a heating coil core 13 , a coupling piece 14 and a ground wire reed 15 .

[0022] Due to the presence of the fusible sheet 9 , the sleeve...

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PUM

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Abstract

The invention discloses a voltage and current protection device for a communication device. The voltage and current protection device comprises a shell and a plug, an overvoltage protector, an overcurrent protector and an alarm are arranged in the shell in one time, the overvoltage protector comprises a gas discharge tube and an overvoltage grounding device, the overvoltage grounding device comprises a sleeve, a fusible sheet and a signal rod; the overcurrent protector comprises a hot coil and an overcurrent grounding device; and the alarm is arranged at the top of the shell. The overvoltage grounding device is added into the overcurrent protector to allow the grounding to be more reliable when overload occurs and prevent the discharge tube from being damaged. The overcurrent grounding device is changed to be grounded at front of a hot-wire coil so as to prevent the hot-wire coil from being damaged when overload occurs.

Description

technical field [0001] The invention relates to the technical field of communication equipment, in particular to a voltage and current protection device for communication equipment. Background technique [0002] A security device commonly used on communication equipment is mainly composed of a gas discharge tube, a heating coil, a heating coil core, a connecting piece and a ground wire reed. The gas discharge tube constitutes the overvoltage protection device, the thermal coil and the overcurrent grounding device composed of the thermal coil core, the connecting piece and the ground wire reed constitute the overcurrent protector, and one end of the overcurrent grounding device is connected to the output terminal d of the thermal coil , and the other end is grounded. This security device can protect the host equipment during overvoltage or overcurrent. Its shortcoming is: when overvoltage occurs, the discharge tube discharges and conducts, and the current flows into the gro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H3/20H02H3/08H02H3/04
CPCH02H3/04H02H3/08H02H3/20
Inventor 蓝永成
Owner 天津市向华生产力促进有限公司
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