CN210609777U

CN210609777U - Low-loss microwave oven door opening and closing system

Info

Publication number: CN210609777U
Application number: CN201920999462.7U
Authority: CN
Inventors: 孙霞; 夏冬梅; 张仁永; 蒋劼; 代红英
Original assignee: Chongqing Institute of Engineering
Current assignee: Chongqing Institute of Engineering
Priority date: 2019-06-30
Filing date: 2019-06-30
Publication date: 2020-05-22
Anticipated expiration: 2029-06-30

Abstract

The utility model provides a low-loss microwave oven door switching system, microwave oven are including having the microwave oven body that is used for getting the open-ended microwave oven body of putting food and setting up the microwave oven door that is used for opening the opening or close at the opening part of microwave oven body, one side of microwave oven door is articulated with the microwave oven body, switching system is including setting up keep away from the interlocking structure of articulated one side, set up proximity switch on the interlocking structure and set up the contact point in open-ended corresponding proximity switch's position department on the microwave oven door, proximity switch links to each other with the controller. The utility model has the effects that the phenomenon that the failure caused by the abrasion of the traditional door hook can not work in the whole microwave oven system is reduced, the whole structure is safer, and the adverse effect brought by the original structure is solved.

Description

Low-loss microwave oven door opening and closing system

Technical Field

The invention relates to the field of microwave oven doors, in particular to a low-loss microwave oven door opening and closing system.

Background

With the change of life style of people and the increase of work and study rhythm, the microwave oven as a simple and convenient food heating device has the popularization rate of more than 80 percent in residents in the first-line city. Generally, a microwave oven is composed of five parts, an oven door, a magnetron, a cooking cavity, a control circuit and a power supply. The power supply generates 2450MHz microwave to be coupled into the cooking cavity by supplying high voltage of about 4000V to the magnetron. When food is absorbed into microwaves, its inner molecules rapidly oscillate at a rate of 24 hundred million 5000 ten thousand per second, and this phenomenon is expressed in a macroscopic view as a heating process of the food.

In order to ensure the safety, the existing microwave oven door opening and closing system has the function of switching on and off the electricity, thereby avoiding the generation of microwave leakage and other accidents. However, in the use process of the microwave oven, the door opening and closing actions are required to be carried out continuously, the damage of the oven door can bring high maintenance cost and even can not work at all, and therefore, the requirement on the service life of the door opening and closing system of the microwave oven is very strict.

At present, the door hook that the side sliding door type microwave oven adopted is mostly single spring control door hook, and this kind of mode exists following not enough:

1. the reliability of the door switch is low. Because of the adoption of single spring control, the contact state of three microswitches at the oven door is directly influenced by the closeness of the door hook, so that the state of the contact point of the door hook and the microswitches is easily influenced and changed, and the working reliability of the microwave oven is reduced.

2. The wear between the door hook and the switch bracket is large. When the door of the microwave oven is closed, the pushing force applied to the door hook acts on the switch bracket, and the spring is stretched by the upward reaction force provided by the switch bracket. In this case, the door hook and the switch bracket are subjected to a large abrasion at the front end of the door hook due to the vertical force of the spring.

3. The oven door sensing microswitch is easy to damage. During the closing process of the microwave oven door body, the upper door hook gives forward and downward acting force to the door induction microswitch contact. The downward force facilitates the pressing of the microswitch, but the forward force is ineffective. The long-term use can cause the inductive microswitch to be not closed in place and even damaged.

4. The reset of the interlock microswitch of the furnace door is difficult. When the microwave oven door body is opened, the door interlocking microswitch jacks the connecting rod by means of the elastic force of the contact to realize resetting, the contact bears the gravity of the connecting rod and the frictional resistance between the connecting rod and the switch bracket, and if the resistance is too large, the door interlocking microswitch can not be reset, so that the microwave oven breaks down.

Disclosure of Invention

In order to reduce the abrasion of the opening and closing system of the microwave oven door in practical use and ensure the normal use of the electromagnetic oven, the invention provides the oven door opening and closing device based on magnetic control, and the safety and reliability of the microwave oven door are enhanced by improving the oven door inductive switch and the interlocking switch.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an opening and closing system of microwave oven door, microwave oven is including having the microwave oven body that is used for getting the opening of putting food and setting up the microwave oven door that is used for opening the opening or close at the opening part of microwave oven body, one side of microwave oven door is articulated with the microwave oven body, its characterized in that, opening and closing system is including setting up keep away from the interlocking structure of articulated one side, set up proximity switch on the interlocking structure and set up the contact point in the open-ended position department that corresponds proximity switch, proximity switch links to each other with the controller. The interlocking structure is a synchronous control structure, the structure can be ensured to work when the short-circuit switch and the proximity switch are closed simultaneously, and if some switch is not closed, the interlocking mechanism can ensure that the whole microwave oven is not in a power-on state, so that the operation safety is ensured.

Preferably, magnetic insertion strips are provided at upper and lower sides of a side of the door facing the microwave oven main body and at a side where the door locking structure is provided.

Preferably, the interlock structure includes a short-circuit switch disposed on a circuit connecting the proximity switch and the controller.

The utility model provides an opening and closing system of microwave oven door mainly adopts the magnetism mode of inhaling to guarantee opening and the closure of furnace door can not lead to whole microwave oven unable work because of traditional door hook damages.

Drawings

FIG. 1 is a front view of the outer structure of the microwave oven of the present invention;

FIG. 2 is a schematic view of a door lock of the microwave oven according to the present invention;

wherein, 1, magnetic insertion strip, 2, approach switch, 3, glass, 4, approach switch contact point, 5, door hinge, 6, short-circuit switch

Detailed Description

For further explanation of the usage and technical solutions of the present invention, the technical solution of the present invention will be completely described with reference to the accompanying drawings.

As shown in fig. 1, the microwave oven of the present invention includes a microwave oven body with an opening for taking and placing food and a microwave oven door provided at the opening of the microwave oven body for opening or closing the opening, one side of the microwave oven door is hinged to the microwave oven body, and an interlocking structure is provided on the microwave oven door for keeping away from the hinged side.

The switch system of the microwave oven door comprises a proximity switch 2 arranged on a bolt of a door lock structure and a contact point 4 arranged on a microwave oven body and corresponding to the position of the proximity switch 2, wherein the proximity switch 2 is electrically connected with a controller, when the microwave oven door is closed, the proximity switch 2 is contacted with the contact point 4, and the controller can receive a corresponding control instruction to start working after receiving a signal of the proximity switch 2. When the door of the microwave oven is opened, the proximity switch 2 is separated from the contact point 4, and the controller controls the microwave oven to stop operating.

Magnetic insertion strips 1 are arranged on the upper side and the lower side of one side of the microwave oven door facing the microwave oven main body and one side provided with a door lock structure, and the microwave oven door can be stably adsorbed on the microwave oven main body through the magnetic insertion strips 1.

As shown in fig. 2, the interlock structure comprises a short-circuit switch 6, the short-circuit switch 6 is arranged on a circuit connecting the proximity switch 2 and the controller, and can be timely disconnected when the proximity switch circuit is in poor contact or short circuit occurs, so that the safe operation of the microwave oven is ensured.

The utility model discloses well proximity switch who adopts is NOBATE PS4-F5, and it is great to detect the face, and detection microwave oven door that can be more accurate is closed. The controller can adopt a computer control chip, so that key operation and independent setting of related programs are facilitated.

The above embodiments, which are further detailed for the purpose of the present invention, technical solutions and advantages, should be understood that the above embodiments are only preferred embodiments of the present invention, and should not be construed as limiting the present invention, and any modifications, equivalents, improvements and the like made to the above embodiments within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A low-loss microwave oven door switch system comprises a microwave oven body with an opening for taking and placing food and a microwave oven door arranged at the opening of the microwave oven body and used for opening or closing the opening, wherein one side of the microwave oven door is hinged with the microwave oven body.

2. The low-loss microwave oven door opening and closing system as claimed in claim 1, wherein magnetic insertion strips are provided at upper and lower sides of a side of the microwave oven door facing the microwave oven main body and at a side where the door locking structure is provided.

3. The low-loss microwave oven door switching system as claimed in claim 1, wherein the interlock structure includes a short switch disposed on a circuit connecting the proximity switch with the controller.