CN103715043A - Magnet-controlled tube and microwave-using apparatus - Google Patents
Magnet-controlled tube and microwave-using apparatus Download PDFInfo
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- CN103715043A CN103715043A CN201310464067.6A CN201310464067A CN103715043A CN 103715043 A CN103715043 A CN 103715043A CN 201310464067 A CN201310464067 A CN 201310464067A CN 103715043 A CN103715043 A CN 103715043A
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Abstract
The invention discloses a magnet-controlled tube and a microwave-using apparatus. The magnet-controlled tube has a cathode framework, a choking ring and a connecting terminal that connects the cathode framework and the choking ring. The connecting terminal has a first component that extends central axis direction of the magnet-controlled tube from the cathode framework, and a second component that extends from the first component and contacts with the choking ring by bending. A gap with a diameter larger than the choking ring is provided between the front end of the second component of the connecting terminal and the first component; and the second component is bent to surround the choking ring along the central shaft direction of the magnet-controlled tube. Therefore, transformation of the choking ring when preventing welding can be done, and position precision of the choking ring can be improved.
Description
Technical field
The present invention relates to make the microwave magnetron producing and the device using microwaves with this magnetron.
Background technology
Common magnetron is divided into vacuum tube part and periphery substantially.Vacuum tube partly has input part and high frequency output portion, and this input part has at internal face and is the negative pole part on the central shaft that disposes radially the anode portion of a plurality of blades (vane) and be configured in anode portion.Periphery has permanent magnet, forms yoke and the cooling end of magnetic circuit.
At the input part place of vacuum tube part, for keeping negative electrode filament and providing the lead-in wire (not shown) of electric power to be configured in vacuum tube inside.On the other hand, by choke and capacitor, form LC filter circuit, with the high-frequency noise that suppresses to be produced by magnetron, via lead-in wire, leak into outside.Outside at vacuum tube, dispose the splicing ear being connected with LC filter circuit.
As shown in Figure 8, known have a following magnetron: in the cathode frame 103 of magnetron, the lead-in wire in cathode frame 103 (not shown) is one-body molded with splicing ear 131, and, splicing ear 131 is shaped to dull and stereotyped U-shaped and is connected (for example,, with reference to patent documentation 1) with choke 132.
In the magnetron of patent documentation 1, make the dull and stereotyped U character segment of splicing ear 131 hook the leading section of choke 132 and utilize Tig welding (gas tungsten arc welding) etc. to weld, be thus connected choke 132 and splicing ear 131.
When the lead-in wire in cathode frame 103 and splicing ear 131 are one-body molded, in the situation that splicing ear 131 has been applied from outside load or impact etc., the situation that exists negative electrode filament broken string, splicing ear 131 to depart from respect to the relative position of anode.Therefore, in recent years, often make lead-in wire and splicing ear moulding respectively.
Patent documentation
Patent documentation 1: Japanese kokai publication hei 1-187738 communique
But, as shown in Figure 8, even the in the situation that of lead-in wire and the moulding of splicing ear difference, when splicing ear 131 forms U-shaped, because the part of splicing ear 131 is open, so splicing ear 131 can not be brought into play and makes choke 132 with respect to the effect of open end direction (below in Fig. 8) location.Thus, can not improve the positioning precision of choke 132.For example, when choke 132 is welded in to splicing ear 131, if splicing ear 131 does not contact with choke 132, can produce solder failure.Under these circumstances, if splicing ear 131 can not be brought into play the positioning action to choke 132, there is the possibility that can not make splicing ear 131 contact with choke 132 and produce solder failure.
On the other hand, in recent years, as shown in the front view of Fig. 9, in the cathode frame 204 of magnetron, sometimes by the front end bending lopping of the splicing ear of pole shape 241.In the structure shown in Fig. 9, because the below of splicing ear 241 is open, thereby the front end of choke 242 need to be inserted into and in the part being bent into of splicing ear 241, weld etc.
But, for by welding in the part being bent into of the leading section insertion splicing ear 241 of choke 242, need to make the leading section of choke 242 stride across splicing ear 241 and significantly move in its direction of insertion.Owing to often using the choke 242 of moulding in advance, if therefore the leading section of choke 242 is significantly moved in direction of insertion, probably make choke 242 deform.If choke 242 deforms, likely cause the bad characteristic of magnetron or lost of life etc., the electrical characteristic of magnetron is brought to considerable influence.
Summary of the invention
The present invention completes in view of this situation, and object is to provide a kind of magnetron, can be suppressed at when welding etc. choke distortion and can improve the positioning precision of choke.
In order to solve above-mentioned existing problem, in magnetron of the present invention, the splicing ear that this magnetron has cathode frame, choke and connects cathode frame and choke, splicing ear has the 1st parts that central axis direction from cathode frame along magnetron extends and extends with from the 1st parts and be bent into the 2nd parts that contact with choke, between the front end and the 1st parts of the 2nd parts of splicing ear, the space that existence is larger than the wire diameter of choke, the 2nd parts are bent on the central axis direction of magnetron round choke.
In addition, device using microwaves of the present invention has above-mentioned magnetron.
According to magnetron of the present invention and device using microwaves, can be suppressed at the distortion of the choke in when welding etc., and can improve the positioning precision of choke.
Accompanying drawing explanation
Fig. 1 is the biopsy cavity marker devices cutaway view of the magnetron of embodiments of the present invention.
Fig. 2 is the plane graph of the periphery of the LC filter circuit that has of the magnetron of execution mode.
Fig. 3 is the front view of the cathode frame that has of the magnetron of execution mode.
Fig. 4 is the front view of the splicing ear that has of the magnetron of execution mode.
Fig. 5 is the front view of the splicing ear that has of the magnetron of variation 1.
Fig. 6 is the front view of the splicing ear that has of the magnetron of variation 2.
Fig. 7 A is the stereogram of the splicing ear that has of the magnetron of variation 3.
Fig. 7 B is the stereogram of the splicing ear that has of the magnetron of variation 3.
Fig. 8 is the stereogram of the cathode frame of existing magnetron.
Fig. 9 is the front view of the cathode frame of another existing magnetron.
Embodiment
The splicing ear that the magnetron of the 1st invention has cathode frame, choke and connects cathode frame and choke, splicing ear has the 1st parts that central axis direction from cathode frame along magnetron extends and extends with from the 1st parts and be bent into the 2nd parts that contact with choke, between the front end and the 1st parts of the 2nd parts of splicing ear, the space that existence is larger than the wire diameter of choke, the 2nd parts are bent on the central axis direction of magnetron round choke.Thus, between front end and the 1st parts due to the 2nd parts at splicing ear, there is the space larger than the wire diameter of choke, so when welding etc., can make choke move and be positioned in the 2nd parts via space along splicing ear.Therefore, compare with the situation that the front end of choke is inserted in the 2nd parts, can suppress the distortion of choke in when welding etc.In addition, because the 2nd parts are bent on the central axis direction of magnetron round choke, therefore, the positioning precision of the choke that can improve when welding etc.
Particularly, in the 2nd invention, the 1st parts and the 2nd parts of the 1st invention extend at grade.Thus, due to simple in structure, thereby can improve the reliability of welding operation.In addition can successfully choke be positioned in the 2nd parts.
Particularly, in the 3rd invention, the angle of bend of the 2nd parts of the 1st invention is greater than 180 degree.Thus, the situation of the 2nd parts can be suppressed to hook, thereby the reliability of welding operation can be improved.
Particularly, in the 4th invention, the front end of the 2nd parts of the 2nd invention is relative with the 1st parts.Thus, the situation of the 2nd parts can be suppressed to hook, thereby the reliability of welding operation can be improved.
Particularly in the 5th invention, the 2nd parts of the 1st invention have from the 1st parts and extend and angle of bend is the 1st bend of 90 degree and extends and angle of bend is the 2nd bend of 180 degree from the 1st bend.
Particularly, in the 6th invention, the splicing ear of the 5th invention is P word shape roughly.
Particularly, in the 7th invention, the 2nd parts of the 1st invention extend in the shape of a spiral.Thus, can locate choke from multiple directions, thereby can improve the positioning precision of choke.
Particularly in the 8th invention, the front end of the 2nd parts of the 1st invention and wire diameter that the space between the 1st parts is less than choke 2 times.Thus, can improve the positioning precision of choke.
The 9th invention is the device using microwaves with the magnetron of any one invention in the 1st～8th.
Below, with reference to accompanying drawing, embodiments of the present invention are described.In addition, the present invention is not subject to the restriction of this execution mode.
(execution mode)
Fig. 1 dissects and the part that obtains is dissectd summary cutaway view a part for the magnetron 1 of embodiments of the present invention.The left side of Fig. 1 is the end view of magnetron 1, and right side is the cutaway view of magnetron 1.In explanation afterwards, the left and right directions of Fig. 1 of take is directions X, and above-below direction is Y-direction, and fore-and-aft direction is Z direction.As shown in Figure 1, the capacitor 6 that magnetron 1 has choke 2, splicing ear 3, anode framework 4, cathode frame 5 and powers from outside.Magnetron 1 has these structures, produces microwave.Anode framework 4 has anodal barrel 7 and is radial configuration at a plurality of blades 8 of the internal face of anodal barrel 7.Cathode frame 5 has ceramic bar 13 and supporting frame 14, keeps being configured in the negative electrode filament 9 on the central shaft of anodal barrel 7.The choke 2 having by magnetron 1 and capacitor 6, formed and prevented that microwave leakage from arriving the LC filter circuit of outside magnetron 1.The central shaft C of the magnetron 1 of present embodiment is consistent with the central shaft of anodal barrel 7.Below, centered by the direction of extending by the central shaft C of magnetron 1, direction of principal axis A(is in the present embodiment, consistent with Y-direction).
Fig. 2 illustrates the plane graph of the periphery of the LC filter circuit that magnetron 1 has.Fig. 2 is the figure from the beneath magnetron 1 of Fig. 1.As shown in Figure 2, the lead-in wire (not shown) in the ceramic bar 13 of splicing ear 3 and cathode frame 5 is connected, and, in the contrary side of this connecting portion, be connected with choke 2.Choke 2 has the coil portion and the wire rod that are connected with capacitor 6 and consist of wire rod and extends from the end of coil portion the portion of terminal forming.
Fig. 3 is the front view of cathode frame 5 of the magnetron 1 of present embodiment.As shown in Figure 3, in cathode frame 5, splicing ear 3, ceramic bar 13, cathode supporting framework 14 and provide the lead-in wire (not shown) of electric power to engage by soldering for target filament 9.Splicing ear 3 and provide the lead-in wire of electric power by moulding respectively for target filament 9.The splicing ear 3 of present embodiment is with respect to ceramic bar 13(cathode frame 5) vertically erect.In addition,, in Fig. 3, choke 2 is positioned in the leading section of splicing ear 3.
Next, use Fig. 4, the structure of the splicing ear 3 of present embodiment is elaborated.Fig. 4 is the front view of the splicing ear 3 of present embodiment.
As shown in Figure 4, splicing ear 3 consists of the high-carbon steel wire with circular cross-section, and has line part 15(the 1st parts 15) and bend 16(the 2nd parts 16 that start to extend agley from one end of line part 15).In the present embodiment, line part 15 and bend 16 form (XY plane) at grade.That is the composition that, line part 15 and bend 16 do not have towards the bending of Z direction.Between the front end 20 and line part 15 of bend 16, be formed with space 17.
Be formed on the front end 20 of the 2nd bend 19 and the wire diameter that the space 17 between line part 15 is designed to be greater than choke 2.
In the present embodiment, the line part 15 of splicing ear 3 vertically erects from cathode frame 5, and extends along the central axis direction A of magnetron 1.
Below, the effect of the splicing ear 3 of magnetron 1 is as constructed as above described.
Owing to there being the space larger than the wire diameter of choke 2 between the front end 20 of the bend 16 at splicing ear 3 and line part 15, so when welding etc., can locate chokes 2 along splicing ear 3, and not need the front end of choke 2 to insert from direction of insertion (Z direction).Thus, can easily choke 2 be disposed to welding position, and can reduce the front end of choke 2 while welding towards the movement of Z direction, thereby can suppress the distortion of choke 2.
Like this, due to easy location choke 2 and without worrying distortion, thereby can suppress the problems such as the bad characteristic of choke 2 and the lost of life.In addition,, in the situation that the size in space 17 is set as being less than 2 times of wire diameter of choke 2, can further improve the positioning precision of choke 2.
In addition, bend 16 is bent on the central axis direction A of magnetron 1 round choke 2.Thus, on the central axis direction A of magnetron 1, not only limit choke 2 mobile towards the top (A1 direction) of Fig. 4, and restriction choke 2 towards below (A2 direction) mobile, therefore can improve the positioning precision of choke 2 when welding etc.
In addition, in the present embodiment, the line part 15 of splicing ear 3 extends along the central axis direction A of magnetron 1, therefore, operator can easily grasp the position/orientation of splicing ear 3 in when welding etc., can improve choke 2 with respect to the positioning precision of splicing ear 3.
In the present embodiment, the front end 20 of splicing ear 3 is configured to across space 17 relative with the line part 15 of splicing ear 3.Thus, without the front end of worrying splicing ear 3, hook equipment or operation gloves etc., can suppress the distortion of splicing ear 3, the broken string of filament etc.
In addition, in the present embodiment, line part 15 and bend 16 extend at grade.Therefore, compare with the situation of not extending at grade, can easily form bend 16.In addition, owing to can making choke 2 successfully be positioned in bend 16 by space 17, thereby can easily carry out the welding operation of choke 2 and splicing ear 3.
In the situation that make the front end of splicing ear form dull and stereotyped U-shaped, when manufacturing magnetron, because U word shape can play the such effect of hook, thereby easily in any place, hook equipment and operation gloves etc. herein.On the other hand, in the present embodiment, the angle of bend of bend 16 is designed to be greater than 180 degree, and the front end of bend 16 is relative with line part 15.Thus, operator is bent the situation that the front end of portion 16 hooks in the time of can suppressing welding operation etc., thereby can improve the reliability of welding operation.
In addition, in the present embodiment, because the angle of bend of bend 16 is designed to be less than 360 degree, thereby bend 16 can be easily formed, and the welding operation of choke 2 and splicing ear 3 can be easily carried out.
In addition, the invention is not restricted to above-mentioned execution mode, also can implement by other variety of way.For example, in execution mode, splicing ear 3 can not be also circular section shape, or can not be also high-carbon steel wire.In addition, bend 16 can be one or more, can, not on the same face, can not be also also curve.
Next, use Fig. 5,6,7A and 7B, the various variation of the splicing ear 3 of the magnetron 1 of present embodiment are described.Fig. 5 illustrates the splicing ear 23 of variation 1, and Fig. 6 illustrates the splicing ear 33 of variation 2, and Fig. 7 A, 7B illustrate the splicing ear 43 of variation 3.
(variation 1)
As shown in Figure 5, bend 26(the 2nd parts 26 of the splicing ear 23 of variation 1) there are the 1st parts 25 from line part 25() extend and carry out the 1st crooked bend 28 and extend and spend with angle of bend 180 the 2nd bend 29 that carries out crooked U-shaped from the 1st bend 28 with angle of bend 45 degree.The angle of bend of bend 26 integral body of this variation 1 is 225 degree (45 degree+180 degree).Even under these circumstances, the central axis direction A that bend 26 is also bent at magnetron is round choke 22, and restriction choke 22 moves towards central axis direction A, thus, and the positioning precision of the choke 22 that can improve when welding etc.In addition, in this variation 1, because the angle of bend of bend 26 is also designed to be greater than 180 degree, and the front end of bend 26 is relative with line part 25, thereby operator is bent the situation that the front end of portion 26 hooks can suppress welding operation time etc., can improve the reliability of welding operation.
(variation 2)
As shown in Figure 6, bend 36(the 2nd parts 36 of the splicing ear 33 of variation 2) there are the 1st parts 35 from line part 35() extend and carry out the 1st crooked bend 38 and extend and spend with angle of bend 180 the 2nd bend 39 that carries out crooked U-shaped from the 1st bend 38 with angle of bend 120 degree.The angle of bend of bend 36 integral body of this variation 2 is 300 degree (120 degree+180 degree).Even under these circumstances, the central axis direction A that bend 36 is also bent at magnetron is round choke 32, and restriction choke 32 moves towards central axis direction A, therefore, and the positioning precision of the choke 32 that can improve when welding etc.In addition,, in this variation 2, the angle of bend of bend 36 is also designed to be greater than 180 degree, and the front end of bend 36 is relative with line part 35, therefore, operator is bent the situation that the front end of portion 36 hooks in the time of can being suppressed at welding operation etc., can improve the reliability of welding operation.
(variation 3)
In execution mode, the situation that line part 15 and bend 16 are extended is at grade illustrated, but in this variation 3, line part 45(the 1st parts 45) and bend 46(the 2nd parts 46) extension at grade.Particularly, as shown in Fig. 7 A, 7B, splicing ear 43 has line part 45 and starts the crooked bend 46 extending of helically from line part 45.Bend 46 extends because helical form is crooked, thereby has the crooked composition towards Z direction.It is 270 degree that the angle of bend of bend 46 and execution mode are identically formed.Under these circumstances, the central axis direction A that bend 46 is also bent at magnetron is round choke (not shown), and restriction choke moves towards central axis direction A, therefore, and the positioning precision of the choke that can improve when welding etc.In addition,, in this variation 3, because the angle of bend of bend 46 is also designed to be greater than 180 degree, thereby operator is bent the situation that the front end of portion 46 hooks can be suppressed at welding operation time etc., can improve the reliability of welding operation.In addition, by make bend 46 with line part 45 not mode at grade form helical form, can locate choke from multiple directions.Thus, can improve the positioning precision of choke.
In addition,, by any execution mode in appropriately combined above-mentioned various execution modes, can bring into play the effect having separately.
About the present invention, with reference to accompanying drawing, preferred implementation has been carried out to abundant record, but easily understanding those skilled in the art can carry out various changes and modifications to it.Be construed as, only otherwise depart from the scope of the present invention that appended claims limits, such distortion and modification are also contained in scope of the present invention.
As mentioned above, according to magnetron of the present invention, as the magnetron using in the device using microwaves such as microwave oven, microwave plasma generation device, ink setting equipment and food drying equipment, be useful.
Claims (9)
1. a magnetron, wherein,
The splicing ear that this magnetron has cathode frame, choke and connects cathode frame and choke,
Splicing ear has the 1st parts that central axis direction from cathode frame along magnetron extends and extends with from the 1st parts and be bent into the 2nd parts that contact with choke,
Between the front end and the 1st parts of the 2nd parts of splicing ear, there is the space larger than the wire diameter of choke,
The 2nd parts are bent into central axis direction at magnetron round choke.
2. magnetron according to claim 1, wherein,
The 1st parts and the 2nd parts extend at grade.
3. magnetron according to claim 1, wherein,
The angle of bend of the 2nd parts is greater than 180 degree.
4. magnetron according to claim 2, wherein,
The front end of the 2nd parts is relative with the 1st parts.
5. magnetron according to claim 1, wherein,
The 2nd parts have from the 1st parts and extend and angle of bend is the 1st bend of 90 degree and extends and angle of bend is the 2nd bend of 180 degree from the 1st bend.
6. magnetron according to claim 5, wherein,
Splicing ear is P word shape.
7. magnetron according to claim 1, wherein,
The 2nd parts extend in the shape of a spiral.
8. magnetron according to claim 1, wherein,
2 times of the wire diameter that is less than choke in front end and the space between the 1st parts of the 2nd parts.
9. a device using microwaves, wherein, this device using microwaves has the magnetron described in any one in claim 1 to 8.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012221975A JP6118984B2 (en) | 2012-10-04 | 2012-10-04 | Magnetron and microwave equipment |
| JP2012-221975 | 2012-10-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103715043A true CN103715043A (en) | 2014-04-09 |
| CN103715043B CN103715043B (en) | 2016-03-02 |
Family
ID=50407924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310464067.6A Active CN103715043B (en) | 2012-10-04 | 2013-10-08 | Magnetron and device using microwaves |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6118984B2 (en) |
| CN (1) | CN103715043B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113871276A (en) * | 2021-09-29 | 2021-12-31 | 中山市美格电子科技有限公司 | Filtering assembly of magnetron |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01187738A (en) * | 1988-01-20 | 1989-07-27 | Hitachi Ltd | Cathode structure for magnetron |
| US20040262304A1 (en) * | 2003-06-30 | 2004-12-30 | Matsushita Electric Industrial Co., Ltd. | Magnetron |
| US20060238129A1 (en) * | 2005-04-26 | 2006-10-26 | Matsushita Electric Industrial Co., Ltd. | Magnetron for microwave oven |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60146390U (en) * | 1984-03-07 | 1985-09-28 | 日本ビクター株式会社 | Mounting structure of electronic parts for operation |
| JPS6139856U (en) * | 1984-08-16 | 1986-03-13 | 株式会社東芝 | magnetron |
| JPS61156624A (en) * | 1984-12-28 | 1986-07-16 | Toshiba Corp | Magnetron for microwave oven |
| JPS61288346A (en) * | 1985-06-17 | 1986-12-18 | Matsushita Electronics Corp | Cathode body structure for magnetron |
| JPH02104578U (en) * | 1989-02-06 | 1990-08-20 | ||
| JPH03272547A (en) * | 1990-03-22 | 1991-12-04 | Matsushita Electron Corp | Magnetron |
| KR0161015B1 (en) * | 1992-07-28 | 1998-12-01 | 강진구 | Cathode support structure of magnetron |
| JPH1145692A (en) * | 1997-07-29 | 1999-02-16 | Oki Electric Ind Co Ltd | Feed terminal for portable electronic equipment |
| JPH11144629A (en) * | 1997-11-12 | 1999-05-28 | Sanyo Electric Co Ltd | Manufacture of magnetron negative electrode structure |
| JP2002076653A (en) * | 2000-08-24 | 2002-03-15 | Seiko Epson Corp | Display device and electronic apparatus using the same |
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2012
- 2012-10-04 JP JP2012221975A patent/JP6118984B2/en not_active Expired - Fee Related
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2013
- 2013-10-08 CN CN201310464067.6A patent/CN103715043B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01187738A (en) * | 1988-01-20 | 1989-07-27 | Hitachi Ltd | Cathode structure for magnetron |
| US20040262304A1 (en) * | 2003-06-30 | 2004-12-30 | Matsushita Electric Industrial Co., Ltd. | Magnetron |
| CN1577700A (en) * | 2003-06-30 | 2005-02-09 | 松下电器产业株式会社 | Magnetron |
| US20060238129A1 (en) * | 2005-04-26 | 2006-10-26 | Matsushita Electric Industrial Co., Ltd. | Magnetron for microwave oven |
| CN1855351A (en) * | 2005-04-26 | 2006-11-01 | 松下电器产业株式会社 | Magnetron for microwave oven |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113871276A (en) * | 2021-09-29 | 2021-12-31 | 中山市美格电子科技有限公司 | Filtering assembly of magnetron |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2014075263A (en) | 2014-04-24 |
| CN103715043B (en) | 2016-03-02 |
| JP6118984B2 (en) | 2017-04-26 |
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