CN102997301A - Opening and closing structure of pull-down oven door - Google Patents
Opening and closing structure of pull-down oven door Download PDFInfo
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- CN102997301A CN102997301A CN 201110269325 CN201110269325A CN102997301A CN 102997301 A CN102997301 A CN 102997301A CN 201110269325 CN201110269325 CN 201110269325 CN 201110269325 A CN201110269325 A CN 201110269325A CN 102997301 A CN102997301 A CN 102997301A
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Abstract
The invention discloses an opening and closing structure of a pull-down oven door. The opening and closing structure comprises a hinged plate fixedly connected with a microwave oven main body and a rotational structural part rotatablely and fixedly arranged on the hinged plate, the external end of the rotational structural part is hinged to the back side of the furnace door, the rear portion of the rotational structural part is connected with a spring, the rear end of the spring is connected to the hinged plate or the microwave oven main body through a fixed hole, and the fixed hole has a triangular structure, and the vertex corner of the fixed hole is arc-shaped. The fixed hole of the spring is designed to have an equilateral triangle structure with the vertex corner and the basic corners being arc-shaped, and the dimension of the triangular structure is greater than the diameter of the steel wire of the hook portion of the spring, so the assembling is convenient, and the insertion of the steel wire into the fixed hole is easy; and the vertex corner of the triangle is arranged to have an arc having a same diameter with the steel wire of the hook portion of the spring, so the hook can be positioned in the vertex corner in no displacement, stable fixing and small noise without considering the bearing of the spring.
Description
Technical field
The present invention relates to a kind of micro-wave oven, particularly a kind of opening and closing structure of pull-down door for microwave oven.
Background technology
Say generally and that micro-wave oven is with plugged, utilize the microwave action that produces and the machine of cooking food easily.Particularly recently except magnetron, also be provided with the heating sources such as heater, multiple cooking method occurred, that is, and the heat that produces in the recycling heater and the method arranged, or the position of control heater and method of arranging etc.
Fig. 1 is the door for microwave oven opening and closing structure of prior art.As shown in Figure 1, it has expressed a kind of pull-down stove-door switching mechanism, and fire door is located at the bottom surface of micro-wave oven, can open from bottom to top.As shown in the figure, fire door 10 centered by hinge axis 12a, rotary opening closing from the top down.Above-mentioned hinge axis 12a is molded on the flap 12, and is connected with the micro-wave oven main body.The back side of above-mentioned fire door 10 is connected on the rotational structure part 16, and above-mentioned rotational structure part 16 rotatable support are on the main body of micro-wave oven.The rear of above-mentioned rotational structure part 16 is connected with spring 14, and the rear end of above-mentioned spring 14 is connected to again on the micro-wave oven main body.Like this, above-mentioned spring 14 performance elastic reactions are supporting above-mentioned fire door 10 towards the top.In this traditional fire door, if open above-mentioned fire door 10 from top to bottom, so, above-mentioned spring 14 will extend and open fire door.If close fire door, then the bounce of above-mentioned spring 14 acts on the fire door 10, and fire door is closed.
But spring 14 be circle or square fixing hole with the connecting hole of micro-wave oven main body, and stress is relatively concentrated, and polarization is poor, and spring can be moved within it when opening the door, and produces easily noise, and reciprocal athletic meeting rubs the hook of spring, affects its life-span.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of door for microwave oven open-and-close mechanism that operates steadily easy for installation that has.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is:
A kind of opening and closing structure of pull-down fire door, it comprises the flap that is fixedly connected with the micro-wave oven main body, rotatably be fixedly installed on the upper rotational structure part of described articulated slab, the outer end of described rotational structure part and the back side of above-mentioned fire door are articulated and connected, the rear of described rotational structure part is connected with spring, the rear end of above-mentioned spring is connected on articulated slab or the micro-wave oven main body by fixing hole, described fixing hole triangular structure, and its drift angle is circular arc.
Preferably, three angles of described triangle fixing hole are circular arc, to improve its assembling and the noiseless that operates steadily.
Preferably, the circular arc of the described triangle drift angle circular arc circle that to be diameter identical with spring carrier arm section steel wire diameter, the dual-side of triangle fixing hole is tangent with semicircle drift angle circular arc respectively.
Preferably, described triangle is equilateral triangle, and the drift angle circular arc is 1/3rd circular arcs of the identical circle of hook portion diameter.
Preferably, the arc diameter at base angle, described both sides is 1/3rd of spring carrier arm section steel wire diameter, and respective side and base are tangent with described base angle circular arc respectively.
Preferably, be equilibrium easily installation property and steadiness, the height of described fixing hole be the spring carrier arm diameter 2-3 doubly.
The fixing hole of spring is designed to the equilateral triangle structure that drift angle and base angle are circular arc, because triangular structure is greater than the hook portion steel wire diameter, so easy to assembly, be easy to insert, triangle drift angle place is set to the diameter circular arc identical with spring carrier arm section steel wire diameter, can make the no matter stressed drift angle place that how all to be positioned at of hook, be not subjected to displacement, fixing-stable and noise are little, because round and smooth circular arc and the transition at drift angle place, the contact-making surface big displacement quantity of spring carrier arm section and fixing hole is little, also effectively avoids rubbing to the damage of hook, improve its service life, strengthen product quality.
Description of drawings
Fig. 1 is the door for microwave oven opening and closing structure schematic diagram for prior art;
Fig. 2 is micro-wave oven opening and closing structure schematic diagram of the present invention;
Fig. 3 is fixation hole configurations schematic diagram of the present invention.
The specific embodiment
In order to make those skilled in the art person understand better the present invention program, the present invention is described in further detail below in conjunction with drawings and embodiments.
Microwave outward appearance of the present invention is rectangular shape, and there is fire door in the housing front of cuboid, fire door one side setting operation key.Form furnace chamber in the housing, the top and side of furnace chamber arranges the internals of micro-wave oven, mainly contains magnetron, waveguide, control circuit device and agitator etc.
Fire door is accommodating food and take out the passage of food in the furnace chamber in the furnace chamber, has enough mechanical strengths, and long-term switch uses still indeformable, non-cracking and microwave leakage do not occur.The observation window of fiberglass is equipped with in fire door central authorities, accompanies intensive pore metallic shield net in the fiberglass, can see cooking status in the stove during use, can make again the unlikely leakage of microwave.
Open about described fire door is divided into and two kinds of pull-downs, for the opening and closing structure of pull-down fire door, as shown in Figure 2, fire door centered by hinge axis 1, rotary opening closing from the top down.Described hinge axis 1 is one-body molded or be fixedly connected on the flap 2, described articulated slab 2 structures triangular in shape, and it is fixedly connected with the micro-wave oven main body.Top at described articulated slab 2 rotatably is fixedly installed rotational structure part 3, the outer end of described rotational structure part 3 and the back side of above-mentioned fire door are articulated and connected, the rear of described rotational structure part 3 is connected with spring 4, and the rear end of above-mentioned spring 4 is connected on articulated slab 2 or the micro-wave oven main body by fixing hole 5 again.Like this, above-mentioned spring 4 performance elastic reactions are supporting above-mentioned fire door towards the top, if open above-mentioned fire door from top to bottom, so, above-mentioned spring 4 will extend and open fire door.If close fire door, then the bounce of above-mentioned spring 4 acts on the fire door, and fire door is closed.
Wherein, as shown in Figure 3, described fixing hole 5 is fillet equilateral triangle structure, namely, leg-of-mutton three angles are circular arc, wherein its drift angle circular arc 51 is 1/3rd circular arcs of the diameter circle identical with spring 4 hook portion steel wire diameter, the dual-side of triangle fixing hole is tangent with drift angle circular arc 51 respectively, circular arc 52 diameters at base angle, both sides are 1/3rd of spring 4 hook portion steel wire diameter, and respective side and base are tangent with described base angle circular arc respectively, on the whole, this fixing hole is the left-right symmetry structure.Wherein, for taking into account assembling and the stability of spring 4 hook portion in fixing hole, the height of described fixing hole is at 2-3 times of spring carrier arm diameter.
The fixing hole of spring is designed to the equilateral triangle structure that drift angle and base angle are circular arc, because triangular structure is greater than the hook portion steel wire diameter, so easy to assembly, be easy to insert, triangle drift angle place is set to the diameter circular arc identical with spring carrier arm section steel wire diameter, can make the no matter stressed drift angle place that how all to be positioned at of hook, be not subjected to displacement, fixing-stable and noise are little, because round and smooth circular arc and the transition at drift angle place, the contact-making surface big displacement quantity of spring carrier arm section and fixing hole is little, also effectively avoids rubbing to the damage of hook, improve its service life, strengthen product quality.
Only be preferred embodiment of the present invention by the above; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. the opening and closing structure of a pull-down fire door, it comprises the flap that is fixedly connected with the micro-wave oven main body, rotatably be fixedly installed on the upper rotational structure part of described articulated slab, the outer end of described rotational structure part and the back side of above-mentioned fire door are articulated and connected, the rear of described rotational structure part is connected with spring, the rear end of above-mentioned spring is connected on articulated slab or the micro-wave oven main body by fixing hole, it is characterized in that: described fixing hole triangular structure, its drift angle are circular arc.
2. such as the opening and closing structure of claim 1 pull-down fire door, it is characterized in that: three angles of described triangle fixing hole are circular arc.
3. such as the opening and closing structure of claim 1 or 2 pull-down fire doors, it is characterized in that: the circular arc of the described triangle drift angle circular arc circle that to be diameter identical with spring carrier arm section steel wire diameter, the dual-side of triangle fixing hole is tangent with semicircle drift angle circular arc respectively.
4. such as the opening and closing structure of claim 1 or 2 pull-down fire doors, it is characterized in that: described triangle is equilateral triangle.
5. such as the opening and closing structure of claim 1 pull-down fire door, it is characterized in that: the circular arc at base angle, both sides (52) diameter is 1/3rd of spring (4) hook portion steel wire diameter, and respective side and base are tangent with described base angle circular arc respectively.
6. such as the opening and closing structure of claim 1 pull-down fire door, it is characterized in that: the height of described fixing hole is 2-3 times of spring carrier arm diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110269325 CN102997301A (en) | 2011-09-13 | 2011-09-13 | Opening and closing structure of pull-down oven door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110269325 CN102997301A (en) | 2011-09-13 | 2011-09-13 | Opening and closing structure of pull-down oven door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102997301A true CN102997301A (en) | 2013-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110269325 Pending CN102997301A (en) | 2011-09-13 | 2011-09-13 | Opening and closing structure of pull-down oven door |
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| Country | Link |
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| CN (1) | CN102997301A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103791530A (en) * | 2014-01-20 | 2014-05-14 | 中山东菱威力电器有限公司 | Microwave oven with pull-down door |
| CN105209705B (en) * | 2013-04-18 | 2017-02-15 | 深圳市金合联投资有限公司 | Hinge |
| CN110214252A (en) * | 2017-02-08 | 2019-09-06 | 松下知识产权经营株式会社 | Heating device |
-
2011
- 2011-09-13 CN CN 201110269325 patent/CN102997301A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105209705B (en) * | 2013-04-18 | 2017-02-15 | 深圳市金合联投资有限公司 | Hinge |
| CN103791530A (en) * | 2014-01-20 | 2014-05-14 | 中山东菱威力电器有限公司 | Microwave oven with pull-down door |
| CN110214252A (en) * | 2017-02-08 | 2019-09-06 | 松下知识产权经营株式会社 | Heating device |
| CN110214252B (en) * | 2017-02-08 | 2021-02-19 | 松下知识产权经营株式会社 | Heating cooker |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130327 |