Door opening structure for microwave oven

A door opening structure for microwave oven includes an upper hinge fastened on a door body assembly, and a lower hinge fastened on a oven body of a microwave oven, wherein the door body assembly is hinged with the oven body by the upper hinge and the lower hinge. An elastic element is provided between the upper hinge and the lower hinge, and the upper hinge is connected with a damper. Both ends of the upper hinge are provided with first connectors that are hinged with the lower hinge, and the middle portion of the upper hinge is provided with second connectors that are hinged with one end of the damper by spring pins.

FIELD OF THE INVENTION

The present disclosure relates generally to the technical field of microwave oven, and more particularly, to a door opening structure for microwave oven.

BACKGROUND OF THE INVENTION

For microwave ovens on the market at present, there are several ways to open the door, e.g. to open the door by a door hook cooperating with a button handle, to open the door by a pull-down door controlled by a torsional spring, etc. For example, an open-door mechanism for microwave oven has been disclosed on Dec. 1, 2010 in a Chinese Patent document NO. CN201662115U in the name of the present applicant, wherein the microwave oven includes an oven body provided with a cooking cavity and a computer control panel, a oven door is provided at the opening of the cooking cavity, a door hook is provided in the oven door, a switch bracket fastened with the door hook is provided in the cooking cavity, an electronic control open-door mechanism is provided in the oven body for controlling the switch bracket and the door hook to separate, which is connected with the computer control panel, and the computer control panel is also electrically connected with an identification device that sends a control signal to the electronic control open-door mechanism. However, at the rapid changes in technology today, the above door opening methods for microwave ovens cannot meet the demand for using in combination with high-end products, so it needs further improvements.

SUMMARY OF THE INVENTION

In view of the above, it is an object of the present disclosure to provide a door opening structure for microwave oven, which is simply designed, reasonably structured and has a good damping effect, to overcome the deficiency of the technology in existence.

According to the object of the present disclosure, a door opening structure for microwave oven includes an upper hinge fastened on a door body assembly, and a lower hinge fastened on a oven body of a microwave oven, wherein the door body assembly is hinged with the oven body by the upper hinge and the lower hinge, an elastic element is provided between the upper hinge and the lower hinge, and the upper hinge is connected with a damper.

Preferably, both ends of the upper hinge are provided with first connectors that are hinged with the lower hinge, and the middle portion of the upper hinge is provided with second connectors that are hinged with one end of the damper by spring pins.

Preferably, the other end of the damper is hinged with a connection member fastened on the microwave oven.

Preferably, the damper is a hydraulic damper.

Preferably, both ends of the lower hinge are provided with third connectors corresponding to the first connectors of the upper hinge, the middle portion of the lower hinge is provided with an escape opening corresponding to the damper, and both sides of the escape opening are provided with fourth connectors.

Preferably, both ends of the upper hinge are respectively hinged with both ends of the lower hinge by the torsional spring pin sequentially passing through the third connectors, the first connectors and the fourth connectors.

Preferably, the two torsional spring pins are respectively provided with torsional springs.

Preferably, one end of each torsional spring is inserted into the first connector and fastened on the first connector, and the other end of the torsional spring is fixed on a catching groove of the fourth connector.

Preferably, the upper hinge is provided with a limiting wall which limits the open angle of the upper hinge, and the lower hinge is provided with a limiting protrusion corresponding to the limiting wall.

Preferably, the door body assembly is provided with a door hook.

In the above technical solution, the door body assembly is hinged with the oven cavity by the upper hinge and the lower hinge, between the upper hinge and the lower hinge is arranged a torsional spring, the upper hinge is connected with a damper, the door body assembly of the oven can be smoothly opened under the together action of torsional spring force and damping in safety and reliability. Meanwhile, it has advantages of sample and rational structure, wide application range, low cost and easy assembly and installation.

DESCRIPTION OF THE REFERENCE SIGNS

DETAILED DESCRIPTION OF THE INVENTION

In the following description of embodiments, reference is made to the accompanying drawings which form a part hereof, and in which it is shown by way of illustration specific embodiments of the disclosure that can be practiced. It is to be understood that other embodiments can be used and structural changes can be made without departing from the scope of the disclosed embodiments.

In one embodiment of the present disclosure, as shown inFIGS. 1-4, a door opening structure for microwave oven includes an upper hinge1fastened on a door body assembly7, and a lower hinge2fastened on a oven body of a microwave oven, wherein the door body assembly7is hinged with the oven body by the upper hinge1and the lower hinge2, between the upper hinge1and the lower hinge2is arranged a elastic element, and the upper hinge1is connected with a damper5.

Both ends of the upper hinge1are provided with first connectors1.6that are hinged with the lower hinge2, and the middle portion of the upper hinge1is provided with second connectors1.7that are hinged with one end of the damper5by spring pins6. The other end of the damper5is hinged with a connection member5.1fastened on the microwave oven. Wherein, the damper5is a hydraulic damper.

Both ends of the lower hinge2are provided with third connectors2.5corresponding to the first connectors1.6of the upper hinge1, the middle portion of the lower hinge2is provided with an escape opening2.6corresponding to the damper5, and both sides of the escape opening2.6are provided with fourth connectors2.7. Both ends of the upper hinge1are respectively hinged with both ends of the lower hinge2by torsional spring pins4sequentially passing through the third connectors2.5, the first connectors1.6and the fourth connectors2.7. The two torsional spring pins4are respectively provided with torsional springs3. One end of each torsional spring3is inserted into the first connector1.6and fastened on the first connector1.6, and the other end of the torsional spring3is fixed on a catching groove2.2of the fourth connector2.7.

The upper hinge1is provided with a limiting wall1.1which limits the open angle of the upper hinge1, and the lower hinge2is provided with a limiting protrusion2.1corresponding to the limiting wall1.1. The door body assembly7is provided with a door hook7.1.

When the door body assembly7of the microwave oven is closing, an interlocking mechanism (not shown) placed on the microwave oven cavity (not shown) is fixed with the door hook7.1of the door body assembly7, the torsional spring3is in compressed state, and the damper5is in no-force bearing state.

When the door body assembly7of the microwave oven is opening, the interlocking mechanism (not shown) placed on the microwave oven cavity (not shown) is separated from the door hook7.1of the door body assembly7, the door body assembly7is opened under the action of the restoring force of the torsional spring3, meanwhile, the damper5is under pressure and acts as cushioning, which provides damping effect to the door body assembly7when it is open. It effectively prevents the door body assembly7automatically quickly opening under the action of the restoring force of the torsional spring3after the interlocking mechanism (not shown) is separated from the door hook7.1; and it does not need to turn down the restoring force of the torsional spring3for preventing the door body assembly7quickly opening that will make the door body assembly7unable to automatically open. Wherein, the open angle of the door body assembly7is limited under the common action of the limiting protrusion2.1of the lower hinge2and the limiting wall1.1of the lower hinge.

When the door body assembly7of the microwave oven is re-closing, the torsional spring3is gradually compressed until the door hook7.1is fixed with the interlocking mechanism (not shown) again, when the torsional spring3is in the maximum compression and it bears the maximum torsion, the damper5is released and in no-force bearing state again, and the door body assembly7is close.