a coupler

Abstract

A novel coupler includes an upper coupler. A plug cavity is disposed on the bottom of the upper coupler. A conductor is fixed in the plug cavity. The upper coupler is equipped with first movable contact pieces connected to the conductor. Each first movable contact piece is electrically connected to a corresponding first fixed contact piece. The novel coupler further includes an adjusting rod and an on-off portion. An adjusting portion extends from the adjusting rod and is in contact with the first movable contact pieces. By driving the adjusting rod, the adjusting portion is pressed against the corresponding first movable contact pieces one by one to separate the first movable contact piece from the corresponding first fixed contact piece, or by driving the adjusting rod, the on-off portion is pressed against all the first movable contact pieces simultaneously to separate the first movable contact piece from the first fixed contact piece. The coupler of such structure is simple and compact, quick to assemble, reduced in production cost, can be quickly switched between various heat preservation functions, and can be accurately switched to a designated terminal insulation value, andsolves inaccurate specified terminal insulation value due to stepless temperature adjustment.

Description

Technical field [0001] The invention relates to the field of couplers, in particular to a coupler. Background technique [0002] Nowadays, the existing adjustable temperature control structure with temperature control, its function is to keep the heated temperature at the required setting temperature to achieve the heat preservation function. The existing heat preservation structure generally has electronic control, that is, through a complicated circuit Setting to adjust the temperature of the heating body, because the electric heating device can only be accurately controlled by electronic control, and the other is through an external adjustable temperature controller, the structure of the temperature controller is like Chinese patent number ZL201120090066.6, through a separate temperature control structure, is assembled on the upper coupler of the electric heater. The specific structure is like the Chinese patent number ZL201310041541.4, which is assembled with the upper couple...

AI Technical Summary

Problems solved by technology

[0002] Nowadays, the existing adjustable temperature control structure with temperature control, its function is to keep the heated product at the required set temperature to achieve the heat preservation function. The existing heat preservation structure is generally electronically controlled, that is, through a complex circuit Set the temperature control and adjustment of the heating body, because only through electronic control can the electric heating device be able to accurately determine the temperature, and the other is through an external adjustable thermostat. The structure of the thermostat is as in the Chinese patent number ZL201120090066.6, through a separate temperature control structure, assembled on the upper coupler of the electric heater, the specific structure is such as Chinese patent number ZL201310041541.4, assembled with the upper coupler to achieve the temperature adjustment effect, the defect is that the manufacturing cost High, complex installation structure, the temperature control structure of this structure adopts stepless adjustment, it is impossible to set the temperature of the electric heater very accurately, and the gear of the existing temperature control structure is separated from the separate parts of the thermostat, thereby increasing production cost

[0003] In addition, the coupler is mostly used on electric heating appliances. When the temperature sensed is equal to or exceeds the preset temperature, the first bimetal is deformed by heat and pushes the anti-dry switch action to disconnect the conductive circuit and realize anti-dry However, the first bimetal in the traditional coupler has an automatic reset function. When the temperature of the first bimetal is lower than the preset value of the reset temperature, the deformation of the first bimetal automatically resets, such as: reset temperature The default value is 50°C. The first bimetal strip disconnects the conductive line due to dry burning (overheating). If the user does not deal with the dry burning problem in time, the temperature of the first bimetal strip will be lower than 50°C after a period of heat dissipation and cooling. ℃, the first bimetal strip is reset, the conductive line is connected again, and the first bimetal strip will disconnect the conductive line due to dry burning, so repeated dry burning power off, cooling reset power on, the coupler together with the electrical appliance using the coupler It is easy to age, so that the life span is reduced, and it is easy to cause safety accidents

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