CN1576705A - Control panel structure for microwave oven - Google Patents
Control panel structure for microwave oven Download PDFInfo
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- CN1576705A CN1576705A CN 03130482 CN03130482A CN1576705A CN 1576705 A CN1576705 A CN 1576705A CN 03130482 CN03130482 CN 03130482 CN 03130482 A CN03130482 A CN 03130482A CN 1576705 A CN1576705 A CN 1576705A
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- control panel
- printed circuit
- board assembly
- control
- dial plate
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Abstract
The control panel structure for microwave oven includes control dial plate, printed circuit board assembly, scale disc knob and circular canal. It features that the control dial plate has several connecting canals and several support side walls with support slot in the inner side; several connecting holes in the back side and printed circuit board assembly with coder in the front side. The outward extending scale disc knob is combined to the coder and has certain interval to the inner side of the control panel; and the circular canal supports the scale disc knob via connecting screw. The scale disc knob and the coder are made to coaxial.
Description
Technical field
The present invention relates to micro-wave oven, relate in particular to its control panel structure.
Background technology
As shown in Figure 1, the inner cooking room (11) that utilizes microwave or heat heat food that forms of cavity of microwave oven assembly (10); One side of cavity assembling body (10) has electronic devices and components installation room (13), is provided with magnetron (MAGNETRON), high-tension transformer various electronic units such as (TRANSFORMER) in the electronic devices and components installation room (13).
One side of the front panel (17) of the front portion of formation cavity assembling body (10) is provided with cooking room door (15).Described cooking room door (15) can rotate to the micro-wave oven front side and open and close cooking room (11).The top of cavity assembling body (10) and both sides are coated with the external box of microvave (19) that forms micro-wave oven upper side and two sides.
The upside of cooking room door (15) is that the upper end of front panel (17) is provided with control panel (100).The function of control panel (100) is the various operation signals of input control micro-wave oven action, and the various information of the action of micro-wave oven are showed to the outside.The structure of control panel (100) as shown in Figure 2.
As shown in Figure 2, a side that forms the control dial plate (110) of control panel (100) front outward appearance forms several control panel perforation (111) and openings, and control panel perforation (111) is penetrated with the dial button (dial knob) (140) that hereinafter will illustrate; Can check the signal that is arranged on the light emitting diode (LED, light-emitting diode) on the printed circuit-board assembly (PCB assembly) (130) that hereinafter will illustrate from the outside by opening.
The installed in front of control dial plate (110) has controller cage (control cover) (120).Described controller cage (120) is protected by opening to the light emitting diode that exposes outside.Controller cage (120) is generally made by material transparent, is fixed on the front of control panel (100) with alite paste.
The medial surface of the control dial plate (110) adjacent with control panel perforation (111) has several joint sleeves (boss) (112,113,114,115).Joint sleeve (112,113,114,115) is outstanding backward to be formed, and plays fixed printed circuit board assembly (130).
The rear side fitting printed circuit board assembly (130) of control dial plate (110).The mounting structure of printed circuit-board assembly (130) is as follows: printed circuit-board assembly (130) has several corresponding joint sleeves (112,113,114,115) connecting hole (132,133,134,135), attachment screw (152,153,154,155) run through connecting hole (132,133,134,135) be connected joint sleeve (112,113 after, 114,115) on, thereby make printed circuit-board assembly (130) be installed in the rear side of control dial plate (110).
Printed circuit-board assembly (130) is provided with and comprises the duty of micro-wave oven to electric control element such as the light emitting diode of external representation several encoders (encoder) (139) with the operation signal of input micro-wave oven.Described coding (139) has the rotating shaft (139a) that forwards prolongs formation, and rotating shaft (139a) is gone up and connected dial button (140).
Select the device of operation signal behind dial button (140) person's of being to use rotary manipulation, comprise dial button body (141) and dial button connecting portion (143).Above-mentioned dial button body (141) is the drum of back opening; Dial button connecting portion (143) prolongs formation behind the medial surface mediad of dial button body (141), interosculate with the rotating shaft (139a) of encoder (139).
Dial button connecting portion (143) is with after the rotating shaft (139a) of encoder (139) is connected, and dial button body (141) runs through control panel perforation (111) back and is provided with to the outside is outstanding.The diameter of dial button body (141) end face is smaller than the bore a hole diameter of (111) of control panel, the user makes between the outer peripheral face of dial button (140) and control panel perforation (111) inner peripheral surface and forms certain clearance, so that can easily rotate and operate dial button (140).The front end of dial button body (141) forms radial extension holder (145), prevents that dial button (140) breaks away from control panel perforation (111).
When user's rotation scale button (140) certain angle, the rotating shaft (139a) that combines with dial button joint portion (143) also rotates, and its anglec of rotation is identical with the anglec of rotation of dial button (140).Along with the anglec of rotation of rotating shaft (139a), select the corresponding signal of telecommunication by encoder (137), and make micro-wave oven work.
But, have said structure there are the following problems according to the control panel of microwave oven of prior art:
In the prior art, printed circuit-board assembly (130) is installed in the process of the rear side of controlling dial plate (110), the connecting hole (132 that connects printed circuit-board assembly (130), 133,134,135,136), attachment screw (152,153,154,155) be connected joint sleeve (112,113,114,115) connection work is more loaded down with trivial details, and might can not be correct be connected on the printed circuit-board assembly (130).
As mentioned above, can not be correct be connected printed circuit-board assembly (130) when going up, the relative position that dial button (140) and encoder (137) are set that just can not be correct, cause outer peripheral face one side and control panel perforation (111) inner peripheral surface one side of dial button (140) to contact with each other, easily rotation scale button (140).
Summary of the invention
In order to overcome the above-mentioned shortcoming that prior art exists, the invention provides a kind of control panel structure of microwave oven, so that when printed circuit-board assembly is installed in the control panel rear side, can correctly guarantee the position that is oppositely arranged of dial button and encoder.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of control panel structure of microwave oven includes control dial plate, printed circuit-board assembly, dial button, cylinder guide pin bushing.Described control dial plate comprises that the control panel perforation of front one side that is formed on control panel and medial surface have outstanding backward several joint sleeves that form; Described printed circuit-board assembly is installed in control dial plate rear side, and corresponding control panel perforation is provided with switch (switch) on the printed circuit-board assembly, and corresponding described joint sleeve has several connecting holes; Described dial button is outstanding externally by the control panel perforation, operates described switch; Described cylinder guide pin bushing is arranged between the medial surface and printed circuit-board assembly front side of control dial plate, guiding dial button.
The diameter of cylinder rear end of conducting sleeve is smaller relatively than front end.
Cylinder guide pin bushing outer peripheral face forms a pair of ribs along its length direction.And the medial surface of control dial plate forms supporting side walls.Form support slot on the supporting side walls, described ribs is inserted in the support slot.Supporting side walls also can prolong at the outer peripheral face of joint sleeve and form.The outstanding backward brace table that forms on the inboard inner peripheral surface of control panel perforation.The front end of the inner peripheral surface of brace table support cylinder guide pin bushing.
Control panel structure of microwave oven of the present invention has following advantage: support the dial button by the cylinder guide pin bushing that is arranged between control dial plate and the printed circuit-board assembly, in the process that printed circuit-board assembly is installed in the control dial plate, can correctly guarantee the position that is oppositely arranged of dial button and encoder.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the exploded perspective schematic diagram of the primary structure of common microwave stove.
Fig. 2 is the cutaway view of existing micro-wave oven chain of command structure.
Fig. 3 is the cutaway view of the preferred embodiment of micro-wave oven chain of command structure of the present invention.
Fig. 4 is the floor map of micro-wave oven chain of command structure medial surface of the present invention shown in Figure 3.
The number in the figure explanation:
200: control panel (control panel) 210: control dial plate (control pannel)
211: control panel perforation 211a: brace table
212,213,214,215: joint sleeve (boss) 216,218: supporting side walls
217,219: support slot 220: controller cage (control cover)
230: printed circuit-board assembly (PCB assembly) 232,233,234,235: connecting hole
239: encoder (encoder) 239a: rotating shaft
240: dial is pressed (dial knob) 241: dial button body
243: dial button connecting portion 245: the dial button is hung holder
252,253,254,255: attachment screw 260: cylinder guide pin bushing (guide)
261,263: ribs
The specific embodiment
With reference to the accompanying drawings, detailed description is according to the preferred embodiment of control panel structure of microwave oven of the present invention.
As shown in Figure 3, the function that is arranged on the control panel (200) of micro-wave oven front one side is the various operation signals of input control micro-wave oven action, and the various information of the action of micro-wave oven are showed to the outside.
The control dial plate (210) that forms the front outward appearance of above-mentioned control panel (200) is gone up several control panel perforation (211) that are penetrated with dial button (240) that formation hereinafter will illustrate.And controller cage (control cover) (220) is installed in the front of control dial plate (210).
The medial surface of the control dial plate (210) adjacent with control panel perforation (211) has several joint sleeves (boss) (212,213,214,215).Joint sleeve (212,213,214,215) is outstanding backward to be formed, and plays fixed printed circuit board assembly (230).As shown in Figure 4, joint sleeve (212,213,214,215) is that the center respectively forms a pair of in its both sides with control panel perforation (211).
The rear side fitting printed circuit board assembly (230) of control dial plate (210).The mounting structure of printed circuit-board assembly (230) is as follows: printed circuit-board assembly (230) has several corresponding joint sleeves (212,213,214,215) connecting hole (232,233,234,235), attachment screw (252,253,254,255) run through connecting hole (232,233,234,235) be connected joint sleeve (212,213 after, 214,215) on, thereby make printed circuit-board assembly (230) be installed in the rear side of control table (210).
Printed circuit-board assembly (230) is provided with various electric control elements, and the control panel of corresponding control panel (200) perforation (211) is provided with several encoders (239).Described encoder (239) is the parts of input micro-wave oven operation signal, and encoder (239) has the rotating shaft (239a) that forwards prolongs formation, and rotating shaft (239a) is gone up and connected dial button (240).
Select the device of operation signal behind dial button (240) person's of being to use rotary manipulation, comprise dial button body (241) and dial button connecting portion (243).Dial button body (241) is the drum of back opening; Dial button connecting portion (243) prolongs formation behind the medial surface mediad of dial button body (241), interosculate with the rotating shaft (239a) of encoder (239).
Dial button connecting portion (243) is with after the rotating shaft (239a) of encoder (239) is connected, and dial button body (241) runs through control panel perforation (211) back and is provided with to the outside is outstanding.The diameter of dial button body (241) end face is smaller than the bore a hole diameter of (211) of control panel, the user makes between the outer peripheral face of dial button (240) and control panel perforation (211) inner peripheral surface and forms certain clearance, so that can easily rotate and operate dial button (240).
The front end of dial button body (241) forms radial extension holder (245), prevents that dial button (240) breaks away from control panel perforation (211).
When user's rotation scale button (240) certain angle, the rotating shaft (239a) that combines with dial button joint portion (243) also rotates, and its anglec of rotation is identical with the anglec of rotation of dial button (240).Along with the anglec of rotation of rotating shaft (239a), select the corresponding signal of telecommunication by encoder (237), and make micro-wave oven work.
Several cylinder guide pin bushings (guide) (260) of guiding dial button (240) are set along horizontal direction between the medial surface of control dial plate (210) and printed circuit-board assembly (230) front.The rear end of described cylinder guide pin bushing (260) is smaller than the diameter of front end.And the inner peripheral surface of cylinder guide pin bushing (260) contacts with the outer peripheral face of the extension holder (241) of dial button (240).
The process of cylinder guide pin bushing (260) guiding dial button (240) is described in detail as follows.Attachment screw (252,253,254,255) run through connecting hole (232,233,234,235) be connected joint sleeve (212,213 after, 214,215) in the process, cylinder guide pin bushing (260) makes printed circuit-board assembly (230) be installed in correct position, thereby has avoided the off-centre of dial button (240).
Further specify then and be, attachment screw (252,253,254,255) be fixed on joint sleeve (212,213,214,215) in the process, even mobile printing circuit board assemblies (230), hang the outer peripheral face of holder (241) because contact, prevented that dial button (240) breaks away from the central authorities of control panel perforation (211) with the inner peripheral surface of cylinder guide pin bushing (260).
Because dial button (240) is not eccentric, so when outer peripheral face one side of dial button (240) and control panel perforation (211) inner peripheral surface one side were joined, the outer peripheral face that has prevented to make because of operation dial button (240) dial button (240) and control panel (211) inner peripheral surface of boring a hole was subjected to damage by friction.
Cylinder guide pin bushing (260) outer peripheral face forms a pair of ribs (261,263) along its length direction.And the medial surface of control dial plate (210) forms supporting side walls (216,218).Supporting side walls (216,218) goes up and forms support slot (217,219), and above-mentioned ribs (261,263) is inserted in the support slot (217,219).After ribs (261,263) was inserted support slot (217,219), cylinder guide pin bushing (260) was supported on the medial surface of control dial plate (210).
Supporting side walls (216,218) is outstanding backward at the medial surface of control dial plate (210), and prolongs formation respectively in outer peripheral face one side of adjacent with it joint sleeve (212,213,214,215).Be described in detail as follows: the joint sleeve (212,213,214 of control panel perforation (211) both sides, 215) in, be positioned at the joint sleeve (212 of its downside from a side direction of the outer peripheral face of the joint sleeve (213,215) that is positioned at upside, 214) outer peripheral face prolongs and forms supporting side walls (216,218).
Though in embodiment as shown in Figure 4, supporting side walls (216,218) be joint sleeve (212 from control panel perforation (211) both sides, 213,214,215) outer peripheral face that a side direction of outer peripheral face that is positioned at the joint sleeve (213,215) of upside in is positioned at the joint sleeve (212,214) of its downside prolongs and forms.But supporting side walls (216,218) structure has more than and is limited to said circumstances.
Also may be following structure: with control panel perforation (211) be the center, and downside forms a pair of joint sleeve (212,213,214,215) respectively thereon.The outer peripheral face that a side direction of outer peripheral face that is positioned at the joint sleeve (214,215) on right side from joint sleeve (212,213,214,215) is positioned at the joint sleeve (212,213) in its left side prolongs and forms supporting side walls (216,218).
Has the outstanding backward brace table (211a) that forms on the inboard inner peripheral surface of control panel perforation (211).The outer peripheral face of described brace table (211a) contacts with the front end of cylinder guide pin bushing (260) inner peripheral surface and support cylinder guide pin bushing (260) time, the front end of brace table (211a) supports extension holder (245) front end of dial button (240), makes dial button (240) avoid breaking away from from control panel perforation (211).
The ribs (261 of the outer peripheral face of cylinder guide pin bushing (260), 263) insert the support slot (217,219) of supporting side walls (216,218) and supported, the inner circumferential surface front end is supported by the outer peripheral face of brace table (211a), thereby the medial surface of controlled dial plate (210) supports.
Has the installation process of the control panel of microwave oven of the present invention of said structure below with reference to Fig. 3 and Fig. 4 explanation.
At first, after the rotating shaft (239a) of the encoder (239) that is arranged on printed circuit-board assembly (230) front side is gone up in conjunction with dial button (240), printed circuit-board assembly (230) is placed the rear side of control dial plate (210).The support slot (217,219) of the ribs on the outer peripheral face of cylinder guide pin bushing (260) (261,263) insertion supporting side walls (216,218), make cylinder guide pin bushing (260) be supported on the inboard of control dial plate (210).At this moment, cylinder guide pin bushing (260) inner peripheral surface front end is supported by the brace table (211a) on control panel perforation (211) inboard inner peripheral surface.
Then, printed circuit-board assembly (230) touches control dial plate (210) rear side closely, and dial button (240) is inserted in the cylinder guide pin bushing (260).At this moment, extension holder (245) outer peripheral face of dial button (240) contacts with the inner peripheral surface of cylinder guide pin bushing (260), makes cylinder guide pin bushing (260) support dial button (240).
After dial button (240) is supported by cylinder guide pin bushing (260), the central authorities of passing control panel perforation (211) are outstanding externally, and the connecting hole (232 of printed circuit-board assembly (230), 233,234,235) contact is at the joint sleeve (212,213 of control dial plate (210), 214,215) front end.
Attachment screw (252,253,254,255) runs through connecting hole (232,233,234,235) and is fixed on the joint sleeve (212,213,214,215), thereby makes printed circuit-board assembly (230) be installed in the rear side of control dial plate (210).In this process, dial button (240) is supported by cylinder guide pin bushing (260).
Attachment screw (252,253,254,255) be fixed on joint sleeve (212,213,214,215) in the process, even printed circuit-board assembly (230) moves and can not be installed in correct position, dial button (240) can not depart from the central authorities of control panel perforation (211) yet.
Basic technological thought of the present invention is: several cylinder guide pin bushings by control dial plate medial surface support the dial button, make and printed circuit-board assembly is installed in the process of control dial plate the correct relative position that dial button and encoder are set with connector.
Though the front is described the present invention in detail, persons of ordinary skill in the art may appreciate that under the prerequisite of the spirit and scope of the invention of in not breaking away from right request scope, determining, can make change miscellaneous and modification.
Dial button and encoder only have been described among the embodiment as shown in the figure, but the technical scope that the present invention will protect has more than qualification therewith.For example also be applicable to tumbler switch (toggle switch) and the button that moves along fore-and-aft direction.In addition, the shape of above-mentioned cylinder guide pin bushing is also along with the alteration of form of above-mentioned dial button.
The effect of invention
The control panel structure of micro-wave oven of the present invention has following effect. By be arranged on control dial plate with Cylinder guide pin bushing between the printed circuit-board assembly supports the dial button, when printed circuit-board assembly is installed In the process of control dial plate, even printed circuit-board assembly is not fixed on correct position, also can The correct relative position that dial button and encoder are set.
Claims (5)
1, a kind of control panel structure of microwave oven comprises control dial plate, printed circuit-board assembly, dial button, cylinder guide pin bushing, it is characterized in that,
Described control dial plate comprises several joint sleeves that the control panel of front one side that is formed on control panel is bored a hole and the side is given prominence to formation backward within it;
Described printed circuit-board assembly is installed in control dial plate rear side, and corresponding control panel perforation is provided with switch on the printed circuit-board assembly, and corresponding described joint sleeve has several connecting holes;
Described dial button projects to the outside by the control panel perforation, and operates described switch;
Described cylinder guide pin bushing is arranged between the medial surface and printed circuit-board assembly front side of control dial plate.
2, control panel structure of microwave oven according to claim 1 is characterized in that the diameter of described cylinder rear end of conducting sleeve is smaller relatively than the diameter of front end.
3, control panel structure of microwave oven according to claim 1 and 2, it is characterized in that cylinder guide pin bushing outer peripheral face forms a pair of ribs along its length direction, and the medial surface of control dial plate forms supporting side walls, forms support slot on the supporting side walls, and described ribs is inserted in the support slot.
4, control panel structure of microwave oven according to claim 3 is characterized in that described supporting side walls prolongs formation at the outer peripheral face of joint sleeve.
5, control panel structure of microwave oven according to claim 4 is characterized in that outstanding backward brace table, the front end of the inner peripheral surface of brace table support cylinder guide pin bushing of forming on the inner peripheral surface of inboard of control panel perforation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03130482 CN1576705A (en) | 2003-07-29 | 2003-07-29 | Control panel structure for microwave oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03130482 CN1576705A (en) | 2003-07-29 | 2003-07-29 | Control panel structure for microwave oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1576705A true CN1576705A (en) | 2005-02-09 |
Family
ID=34578889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03130482 Pending CN1576705A (en) | 2003-07-29 | 2003-07-29 | Control panel structure for microwave oven |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1576705A (en) |
-
2003
- 2003-07-29 CN CN 03130482 patent/CN1576705A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |