CN100487321C

CN100487321C - Microwave oven door

Info

Publication number: CN100487321C
Application number: CNB2004100719694A
Authority: CN
Inventors: 金永哲
Original assignee: LG Electronics Tianjin Appliances Co Ltd
Current assignee: LG Electronics Tianjin Appliances Co Ltd
Priority date: 2004-09-20
Filing date: 2004-09-20
Publication date: 2009-05-13
Anticipated expiration: 2024-09-20
Also published as: CN1752577A

Abstract

The present invention discloses a microwave oven door, including oven door plate component and front panel component, the oven door plate component includes door frame which can be turnably combined on the microwave oven self-body and is made of metal material, spacer cover set on the back face of the oven door plate component and reflecting plate set on the front face of the oven door plate component. The front panel component includes front panel set on the oven door plate component, metal decorative plate set on the external surface of front panel and doorknob component set on the metal decorative plate. Between the lower portion of lower rib of attachment of back face of front panel and front panel a gap is formed, said gap can be used for inserting the supporting plate of supporting frame set on the door frame.

Description

Door of microwave oven

Technical field

The present invention relates to a kind of micro-wave oven, particularly relate to a kind of door of microwave oven.

Background technology

As everyone knows, micro-wave oven is a kind of household electrical appliance that utilize electric energy to produce microwave by magnetron and microwave irradiation is carried out cooking food on food.According to the difference of its user mode, micro-wave oven can be divided into usually: two types of common microwave stove and ventilating hood-type microwave ovens; Common microwave stove uses above being placed on kitchen cabinet in the kitchen usually; The ventilating hood-type microwave oven operated by rotary motion not only can be used for cooking food on the wall above the gas burner, also have the effect of the ventilating fan of gas burner.The opening and closing structure of the fire door of micro-wave oven has two kinds: a kind of is side open and close type door structure, and another kind is an open and close type door structure up and down.

Fig. 1 is the structural representation of existing common microwave stove.As shown in Figure 1, existing common microwave stove comprises: casing 10, cooking room 20, fire door 30 and electric control chamber 35; Described casing 10 forms the micro-wave oven outward appearances, and the inside of casing 10 is formed with and is used for the cooking room 20 of cooking food, and the top of cooking room 20 is provided with the electric control chamber 35 that is used for controlling cooking room 20 states.

Above-mentioned existing common microwave stove is a heating source with the microwave mainly, and the electric heater that also is provided with that has is assisted heating source; Be provided with in the described electric control chamber 35 and be used for providing the electronic unit of microwave to cooking room 20.

Described fire door 30 selectively opens and closes the inlet of cooking room 20, can prevent that microwave from coming out human body is damaged from cooking room 20 internal leakages; In addition, after micro-wave oven was finished cooking operation, fire door 30 was opened automatically; Described fire door 30 is that the center rotates closure or openness with the hinge 34 that is formed on cooking room 20 bottom outer rims.

The position, inwall both sides of the edge of described fire door 30 is respectively arranged with a hook 32; Be formed with one and hook 32 corresponding hook holes 12 on the two side of the front openings of described cooking room 20 respectively; When fire door 30 closures, described hook 32 inserts respectively in the corresponding with it hook hole 12, contacts with the microswitch (not shown).

Described microswitch can be in opening or closure state by perception fire door 30, when microswitch perceives fire door 30 when being in opening, just automatically with the dump of micro-wave oven,, the operator is damaged to prevent from microwave is come out from cooking room 20 internal leakages; And perceive fire door 30 when being in closure state when microswitch, just automatically with the power connection of micro-wave oven, micro-wave oven is started working.

The top of described cooking room 20 is provided with electric control chamber 35, and the effect of electric control chamber 35 is duties of control micro-wave oven; Described electric control chamber 35 is provided with the display window to outside microwave oven operating position.

Fig. 2 is the STRUCTURE DECOMPOSITION schematic diagram of door of microwave oven shown in Figure 1.As shown in Figure 2, described fire door 30 comprises: stove door plant parts 40, bezel assembly 50 and attaching parts 60; Described stove door plant parts 40 are combined in the downside in cooking room 20 the place aheads; Described bezel assembly 50 is arranged on the front surface of stove door plant parts 40, thereby forms the outward appearance of fire door; Described attaching parts 60 link together stove door plant parts 40 and bezel assembly 50.

Described stove door plant parts 40 comprise: doorframe 41 and isolation cover 43; Described doorframe 41 usefulness metal materials are made, and doorframe 41 rotatably is combined on the casing 10; Described isolation lid 43 is arranged on doorframe 41 back sides.

In order to cut off the microwave of cooking room 20 inside, described doorframe 41 usefulness metal materials are made, and the central part of doorframe 41 is formed with a plurality of through hole 41a, and the effect of described through hole 41a is in order to observe the inside of cooking room 20 from the outside of fire door; But, must prevent that the microwave of cooking room 20 inside from letting out by through hole 41a, therefore, the diameter of through hole 41a must be less than the wavelength 2.5mm of microwave.

The effect of described isolation lid 43 is in order to prevent that microwave is to the fire door external leaks, isolate and cover on the 43 division board (not shown)s that are arranged on the doorframe 41, specifically, for the various switch blocks that prevent to be provided with on the division board expose, isolate and cover 43 outsides attached to division board.

The lower limb 41c of described stove door plant parts 40 is provided with down support plate 43, and following support plate 43 is fixedly connected on the lower limb 41c by screw, is fixed on the function that stove door plant parts 40 are supported bezel assembly 50 bottoms constantly thereby play bezel assembly 50.

In addition, on the surface of described bezel assembly 50 attached to stove door plant parts 40, form the overall appearance of fire door 30, bezel assembly 50 comprises: attached to the lip-deep front panel 51 of stove door plant parts 40 be arranged on front panel 51 up knobs 53.

Described front panel 51 does not adopt to be made by the glass material of cooking room 20 internal high temperature fusing, and seeing through front panel 51 can be from the inside of visual observation cooking room 20; The both sides, top of front panel 51 are formed with one respectively and are used for front panel 51 is fixed on through hole 51a on the stove door plant parts 40.

In addition, described front panel 51 is provided with the handle 53 that is used for opening and closing fire door 30, and handle 53 can be controlled for the user, thereby more easily opens and closes fire door 30, and handle 53 adopts the cylindrical metal pipe to make; In addition, two connecting bolts 54 that are used for being connected with attaching parts 60 are formed on the handle 53 projectedly.

In addition, be formed with the attaching parts 60 that are used in conjunction with bezel assembly 50 on the described stove door plant parts 40, attaching parts 60 comprise: support 61, nut 63 and packing ring 65;

61 one-tenth on described support

Font, its side contacts with the back side of front panel 51.In addition, be formed with support connecting hole 61a on the side of described support 61, be formed with a plurality of support connecting hole 61b on the end face of described support 61.

Describe the process of utilizing support 61 assembling bezel assemblies 50 below in detail: at first, make the connecting bolt 54 on the handle 53 pass the through hole 51a that is formed on the front panel 51 respectively, and make it to protrude to the outside.

Then, make the connecting bolt 54 that protrudes to the outside from through hole 51a pass through hole 61a on the support 61, be inserted in packing ring 65, at last nut 63 is tightened on the connecting bolt 54, bezel assembly 50 is just assembled and is finished.

Described bezel assembly 50 is just assembled and is finished, the end face that is connected the support 61 on the front panel 51 contacts with the lower surface of the top edge 41b of doorframe 41, and support connecting hole 61b corresponding on through hole 41b ' and support 61 end faces on the top edge 41b of doorframe 41 is aimed at, and utilize screw that the top of stove door plant parts 40 and the top of bezel assembly 50 are linked together.

Bottom to stove door plant parts 40 is illustrated with the situation that is connected of the bottom of bezel assembly 50 below: after the top of the top of described stove door plant parts 40 and bezel assembly 50 links together, in order to support the bottom of bezel assembly 50, be provided with down support plate 43; The lower end of described front panel 51 is inserted in down in the insertion groove 43a of support plate 43, and in other words, following support plate 43 is supported in the bottom of bezel assembly 50.In addition, the side of following support plate 43 then utilizes screw to be connected on the lower limb 41c of doorframe 41, thereby makes the linking together of bottom of the bottom of stove door plant parts 40 and bezel assembly 50.

But, the door structure of the above-mentioned common microwave stove that oneself has has following shortcoming: as shown in Figure 3, when described bezel assembly 50 is combined on the stove door plant parts 40, the lower end of front panel 51 is inserted in down in the insertion groove 43a of support plate 43, in other words, the part of following support plate 43 is outwards protruded from the lower edge of front panel 51, has influenced the outward appearance of micro-wave oven.

In addition, transparent glass material and metal material do not match mutually, look that from the outside tone is inharmonious.In addition, the micro-wave oven of this employing horizontal type structure fire door mainly uses in high-grade hotel, so for consumers, its outward appearance is extremely important.

In addition, when micro-wave oven was fixedly installed on certain position, its overall appearance seemed even more important.

Summary of the invention

Technical problem to be solved by this invention is, overcomes the shortcoming of the door structure of the above-mentioned micro-wave oven that oneself has, and a kind of suitable door of microwave oven that makes rational in infrastructure, attractive in appearance is provided.

In order to solve described technical problem, the technical solution used in the present invention is: door of microwave oven of the present invention comprises: stove door plant parts and bezel assembly; Described stove door plant parts comprise: the isolation lid at the back side that rotatably be combined in the doorframe made from metal material on the micro-wave oven body, is arranged on the stove door plant parts and be arranged on the reflecting plate of the front of stove door plant parts; The edge of described doorframe is outwards bending respectively, and top edge is formed at top, and lower limb is formed at the bottom; The lower limb of described doorframe is connected with a support that is used for supporting the bezel assembly bottom; Described support comprises: the connecting plate that is connected with the lower limb of stove door plant parts with screw and with the orthogonal support plate of connecting plate; Described bezel assembly comprises: be arranged on front panel on the stove door plant parts, be arranged on the metal lagging on the outer surface of front panel and grip member on the metal lagging is set; The position, both sides, top of described front panel is formed with a through hole respectively; The both sides, top of described metal lagging are formed with a through hole that is used for connecting grip member respectively, and the through hole of both sides, described metal lagging top is corresponding with the through hole of both sides, front panel top respectively; Described grip member comprises: handle, insulated column and connecting bolt; The effect of described handle is to control for the user, so that more easily open and close fire door; Described insulated column is separately positioned on position, handle both sides, and its effect is to make to form the space between metal lagging and the handle; Described connecting bolt connects handle and insulated column, and is fixed on handle and the insulated column; The bottom at the back side of described front panel is attached with and is used for attachment flaps that front panel and doorframe are combined; The main body of attachment flaps is a rectangular metal plate, and protruding ground formation on the one side has last rib and following rib; Be coated with adhesive on the zone between the last rib of described attachment flaps and the following rib, thereby attachment flaps be bonded in the bottom of front panel; Form the space between the following rib bottom of described attachment flaps and the front panel, this space can be used to insert the support plate that is arranged on the support on the doorframe.

The inwall of the through hole of both sides, described metal lagging top forms intilted protective surface.

The top and bottom of described metal lagging form respectively to the position of back side bending, thereby prevent the user's of edge damage up and down of metal lagging skin.

The diameter of the protective surface of the through hole of both sides, described metal lagging top is less than the packing ring diameter.

Described reflecting plate is arranged on the front of stove door plant parts, and with the sealing of the through hole on the described doorframe, reflecting plate is made with transparent, smooth heat proof material.

The central part of described metal lagging is formed with can be from the peep hole of the inside of the visual observation cooking room of fire door.

The invention has the beneficial effects as follows: the front panel of door of microwave oven is provided with attachment flaps, be formed with the space between attachment flaps and the front panel, the support plate 171 of support 170 inserts in the space that forms between attachment flaps 213 and the front panel 210, can't see the joint mark of support from the place ahead of fire door, seem neat and artistic, improved the class of product.

In addition, on the inwall of the through hole of metal lagging, form the protective surface of inclination, thereby the connecting portion on the metal lagging is deformed can prevent the mounting knob parts time, make whole metal lagging keep smooth serviceable condition.

Description of drawings

Fig. 1 is the structural representation of existing common microwave stove;

Fig. 2 is the STRUCTURE DECOMPOSITION schematic diagram of door of microwave oven shown in Figure 1;

Fig. 3 is the place ahead front elevation of door of microwave oven shown in Figure 1;

Fig. 4 is the STRUCTURE DECOMPOSITION schematic diagram of door of microwave oven of the present invention;

Fig. 5 is the phantom of door of microwave oven of the present invention;

Fig. 6 is the STRUCTURE DECOMPOSITION schematic diagram of the bezel assembly of door of microwave oven of the present invention;

Fig. 7 is the place ahead front elevation of door of microwave oven of the present invention.

Among the figure:

100: stove door plant parts 110: doorframe

130: isolate and cover 150: reflecting plate

200: bezel assembly 210: front panel

230: metal lagging 233: through hole

233a: protective surface 250: grip member

251: handle 253: insulated column

257: packing ring 270: support

271: nut A: adhesive

The specific embodiment

Below in conjunction with the drawings and specific embodiments the present invention is described in further detail:

Fig. 4 is the STRUCTURE DECOMPOSITION schematic diagram of door of microwave oven of the present invention.Door of microwave oven 30 of the present invention comprises: be arranged on the stove door plant parts 100 of the place ahead downside of cooking room 20 and the bezel assembly 200 that the place ahead of being arranged on stove door plant parts 100 forms the fire door outward appearance.

Described stove door plant parts 100 comprise: the isolation lid 130 at the back side that rotatably be combined in the doorframe made from metal material 110 on the micro-wave oven body, is arranged on stove door plant parts 100 and be arranged on the reflecting plate 150 of the front of stove door plant parts 100.

Described doorframe 110 usefulness metal materials are made, its effect is to prevent that microwave from coming out from cooking room 20 internal leakages, be formed with a plurality of through holes 117 on the doorframe 110, the effect of through hole 117 is can be for the situation of user from visual observation cooking room 20 inside, the diameter of through hole 117 is less than 2.5mm, less than the wavelength of microwave, so the microwave of cooking room 20 inside can not leak into the outside of micro-wave oven; In addition, the edge of described doorframe 110 is outwards bending respectively, and top edge 111 is formed at top, and lower limb 113 is formed at the bottom.

Described reflecting plate 150 is arranged on the front of stove door plant parts 100, with described through hole 117 sealings, the effect of reflecting plate 150 is to prevent that heat in the cooking room 20 is to stove door plant parts 100 external leaks, transparent, the smooth heat proof material of reflecting plate 150 usefulness is made, and the user can observe the situation of cooking room 20 inside from the outside of fire door 30; Reflecting plate 150 utilizes screw to be fixedly connected on the doorframe 110.

In addition, the lower limb 113 of described doorframe 110 is connected with a support 170 that is used for supporting bezel assembly 200 bottoms; Described support 170 comprises: the connecting plate 173 that is connected with the lower limb 113 of stove door plant parts 100 with screw and with connecting plate 173 orthogonal support plates 171.

The bezel assembly 200 that is arranged on the place ahead of stove door plant parts 100 forms the overall appearance of door of microwave oven 30.Described bezel assembly 200 comprises: attached to the front panel on the stove door plant parts 100 210, attached to the metal lagging on the outer surface of front panel 210 230 with grip member 250 on the metal lagging 230 is set.

Seeing through described front panel 210 can be from the situation of visual observation cooking room 261 inside, front panel 210 adopts and is not easy to be made by the glass material of the high temperature melting of cooking room 20 inside, and the both sides, top of front panel 210 are formed with a through hole 211 that is used for being provided with front panel 210 on stove door plant parts 100 respectively.

In addition, the bottom at the back side of the front panel 210 relative with described doorframe 110 is attached with and is used for attachment flaps 213 that front panel 210 and doorframe 110 are combined; As shown in Figure 5, the main body of described attachment flaps 213 is a rectangular metal plate, and protruding ground formation on the one side has last rib 213a and following rib 213b; Be coated with adhesive on the last rib 231a of described attachment flaps 213 and the zone between the following rib 213b, thereby attachment flaps 213 be bonded in the bottom of front panel 210; Described effect of going up rib 213a and following rib 213b is to prevent that the top and the bottom of adhesive on attachment flaps 213 from moving; In addition, by this method attachment flaps 213 is bonded in after the front panel 210, forms the space between the following rib 213b bottom of described attachment flaps 213 and the front panel 210, this space can be used to insert the support plate 171 of the support 170 that is arranged on the doorframe 110.

Be attached with the metal lagging 230 that improves fire door 30 aesthetic appearances on the outer surface of described front panel 210, the shape of metal lagging 230 is identical with the shape of front panel 210, and the central part of metal lagging 230 is formed with can be from the peep hole 231 of the inside of the visual observation cooking room 20 of fire door.

Described metal lagging 230 Yong Bu Rust steel discs are made, its edge is sharp as blade, so, as shown in Figure 5, the top and bottom of metal lagging 230 form respectively to the position of back side bending, thereby prevent the user's of edge damage up and down of metal lagging 230 skin.

In addition, be coated with adhesive A near the inner surface the both ends up and down of the metal lagging 230 that is bent, adhesive A bonds together front panel 210 and metal lagging 230; Like this, do not have on described front panel 130 and the metal lagging 230 to form the space between the position of adhesive A.

The both sides, top of described metal lagging 230 are formed with a through hole 233 that is used for connecting grip member respectively, and through hole 233 is corresponding with through hole 211 respectively; As shown in Figure 6, the inwall of described through hole 233 forms intilted protective surface 233a.

The outer setting of described metal lagging 230 has and is used for selectively opening and closing the grip member 250 of fire door 30, and grip member 250 comprises: handle 251, insulated column 253 and connecting bolt 255; The effect of described handle 251 is to control for the user, so that more easily open and close fire door 30; Described insulated column 253 is separately positioned on position, handle 251 both sides, and its effect is to make to form the space between metal lagging 230 and the handle 251; Described connecting bolt 255 connects handle 251 and insulated column 253, and is fixed on hand 251 and the insulated column 253.

Be with packing ring 257 on the described connecting bolt 255, the effect of packing ring 257 is to prevent that insulated column 253 from directly contacting with metal lagging 230 surfaces, and packing ring 257 diameters are greater than the diameter of the protective surface 233a of through hole 233.

Be described in detail in the process of handle assembled parts 250 on front panel 210 and the metal lagging 230 below:

At first, through hole 233 corresponding on through hole 211 and the metal lagging 230 on the front panel 210 is aimed at respectively, made connecting bolt 255 insert respectively in the through hole 233 and the through hole 211 on the front panel 210 on the corresponding metal lagging 230 grip member 250; Then, make the connecting bolt 255 that stretches out from through hole 211 pass connecting hole corresponding on the support 270 respectively, and on connecting bolt 255, be inserted in coupling nut 271 and tighten, so far, grip member 250 just has been assembled on front panel 210 and the metal lagging 230, that is to say, finished the assembling of bezel assembly 200; Be inserted with packing ring 273 respectively between described front panel 210 and the support 270 and between support 270 and the nut 271.

Be enclosed within the packing ring 257 on the insulated column 253, in the connection procedure of connecting bolt 255 and nut 271, metal lagging 230 is constantly pushed the space bending that causes metal lagging 230 between metal lagging 230 and front panel 210, to form to front panel 210 directions; But, owing to the protective surface 233a that is formed on through hole 233 inwalls, the space bending that metal lagging 230 can not form between metal lagging 230 and front panel 210.

In addition, the end face of the support 270 that has been connected with front panel 210 is inserted the bottom of the top edge 111 of stove door plant parts 100, and will be formed on through hole 270a corresponding on through hole 115 and support 270 end faces on the top edge 111 of doorframe 110 aims at respectively, insert and tighten screw respectively, thus being connected between the top of the top of finishing stove door plant parts 100 and bezel assembly 200.

Connection procedure to the doorframe 110 of the bottom of bezel assembly 200 and stove door plant parts 100 is illustrated below:

Under the top of stove door plant parts 100 and state that the top of bezel assembly 200 is connected, insert the support plate 171 of support 170 in the space that between the following rib 213b bottom of attachment flaps 213 and front panel 210, forms, then, the connecting plate 173 of support 170 and the lower limb 113 usefulness screws of doorframe 110 are linked together.

Fig. 7 is the place ahead front elevation of door of microwave oven of the present invention.As shown in Figure 7, any connection vestige is not seen in the bottom in fire door front, seems spick-and-span attractive in appearance; In addition, the position that is connected with grip member on metal lagging be can't see because of connecting the phenomenon that grip member is out of shape.

Claims

1. a door of microwave oven comprises: stove door plant parts and bezel assembly; It is characterized in that: described stove door plant parts (100) comprising: the isolation lid (130) at the back side that rotatably be combined in the doorframe made from metal material (110) on the micro-wave oven body, is arranged on stove door plant parts (100) and be arranged on the reflecting plate (150) of the front of stove door plant parts (100); The edge of described doorframe (110) is outwards bending respectively, and top edge (111) is formed at top, and lower limb (113) is formed at the bottom; The lower limb (113) of described doorframe (110) is connected with a support (170) that is used for supporting bezel assembly (200) bottom; Described support (170) comprising: the connecting plate (173) that is connected with the lower limb (113) of stove door plant parts (100) with screw and with the orthogonal support plate of connecting plate (173) (171); Described bezel assembly (200) comprising: be arranged on front panel (210) on the stove door plant parts (100), be arranged on the metal lagging (230) on the outer surface of front panel (210) and grip member (250) on the metal lagging is set; The position, both sides, top of described front panel (210) is formed with a through hole (211) respectively; The both sides, top of described metal lagging (230) are formed with a through hole (233) that is used for connecting grip member respectively, and the through hole (233) of described metal lagging (230) both sides, top is corresponding with the through hole (211) of front panel (210) both sides, top respectively; Described grip member (250) comprising: handle (251), insulated column (253) and connecting bolt (255); The effect of described handle (251) is to control for the user, so that more easily open and close fire door (30); Described insulated column (253) is separately positioned on handle (251) position, both sides, and its effect is to make to form the space between metal lagging (230) and the handle (251); Described connecting bolt (255) connects handle (251) and insulated column (253), and is fixed on handle (251) and the insulated column (253); The bottom at the back side of described front panel (210) is attached with the attachment flaps (213) that is used for making front panel (210) and doorframe (110) to combine; The main body of attachment flaps (213) is a rectangular metal plate, and protruding ground formation on the one side has last rib (213a) and following rib (213b); Be coated with adhesive on the last rib (231a) of described attachment flaps (213) and the zone between the following rib (213b), thereby attachment flaps (213) be bonded in the bottom of front panel (210); Form the space between following rib (213b) bottom of described attachment flaps (213) and the front panel (210), this space can be used to insert the support plate (171) that is arranged on the support (170) on the doorframe (110).

2. a kind of door of microwave oven according to claim 1 is characterized in that: the inwall of the through hole (233) of described metal lagging (230) both sides, top forms intilted protective surface (233a).

3. a kind of door of microwave oven according to claim 1 is characterized in that: the top and bottom of described metal lagging (230) form respectively to the position of back side bending, thereby prevent the user's of edge damage up and down of metal lagging (230) skin.

4. a kind of door of microwave oven according to claim 1 and 2 is characterized in that: the diameter of the protective surface (233a) of the through hole (233) of described metal lagging (230) both sides, top is less than packing ring (257) diameter.

5. a kind of door of microwave oven according to claim 1 and 2, it is characterized in that: described reflecting plate (150) is arranged on the front of stove door plant parts (100), with the sealing of the through hole (117) on the described doorframe (110), reflecting plate (150) is made with transparent, smooth heat proof material.

6. a kind of door of microwave oven according to claim 1 and 2 is characterized in that: the central part of described metal lagging (230) is formed with can be from the peep hole (231) of the inside of the visual observation cooking room (20) of fire door.