EP2650897A1 - Commutateur électrique sensible à la température et son procédé de fabrication - Google Patents

Commutateur électrique sensible à la température et son procédé de fabrication Download PDF

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Publication number
EP2650897A1
EP2650897A1 EP13163124.4A EP13163124A EP2650897A1 EP 2650897 A1 EP2650897 A1 EP 2650897A1 EP 13163124 A EP13163124 A EP 13163124A EP 2650897 A1 EP2650897 A1 EP 2650897A1
Authority
EP
European Patent Office
Prior art keywords
spring element
leg
fixed contact
switch
section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP13163124.4A
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German (de)
English (en)
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EP2650897B1 (fr
Inventor
Herbert Wurmb
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Elektronik Werkstatte Ing Wurmb Gesmbh
Original Assignee
Elektronik Werkstatte Ing Wurmb Gesmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Elektronik Werkstatte Ing Wurmb Gesmbh filed Critical Elektronik Werkstatte Ing Wurmb Gesmbh
Publication of EP2650897A1 publication Critical patent/EP2650897A1/fr
Application granted granted Critical
Publication of EP2650897B1 publication Critical patent/EP2650897B1/fr
Not-in-force legal-status Critical Current
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/32—Thermally-sensitive members
    • H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
    • H01H37/54—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting
    • H01H37/5427—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting encapsulated in sealed miniaturised housing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/32—Thermally-sensitive members
    • H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
    • H01H37/54—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting
    • H01H2037/549—Details of movement transmission between bimetallic snap element and contact

Definitions

  • the invention relates to a temperature-sensitive electrical switch comprising a snap element, preferably a snap disc made of bimetallic strip and a spring element as a movable contact portion, a fixed contact portion against which the movable contact portion for closing the contact is movable, a pressure pin as operative connection between the snap element and spring element, a pin guide , a housing and a hood.
  • the invention relates to a method for producing a temperature-sensitive electrical switch according to the invention.
  • Temperature-sensitive electrical switches are used for the temperature-dependent switching or closing and / or interruption of an electrical circuit, for example as a disconnection device in a kettle, as overload protection or in regulators for boilers. Therefore, the term thermostat is common for these switches.
  • thermostats includes a snap-action element made of bimetallic strip, which is usually designed as a snap-action disc as a temperature-sensitive element.
  • the snap disc may be circular or have other shapes, e.g. square, rectangular etc.
  • the snap disc has a curvature, for example in the form of a flat spherical cap, which changes abruptly at a lower and an upper snap temperature.
  • a spring element is moved, which contacts a fixed contact element in a buckling state of the snap disk and has no contact with the fixed contact element in the other curvature state.
  • a pressure pin guided in a pin guide is used, which is preferably designed to be electrically insulating.
  • the pressure pin does not simultaneously touch the snap disc and the spring element in a buckling state of the snap disc. Only when following the slow, sudden ("digital") stroke of the snapping snap-action disc the pressure pin touches the snap disc and the spring element simultaneously. As a result, sparking is avoided.
  • Thermostats known from the prior art have the following structure, wherein the spring element basically contacts the fixed contact element.
  • a contact rivet is attached to the spring element.
  • the spring element is subsequently riveted by means of a connecting rivet with a connector or terminal and a housing of the thermostat, wherein the housing is usually made of plastic.
  • Another contact rivet will be on Fixed contact element mounted.
  • another terminal is also riveted to the fixed contact element in the housing with a connecting rivet.
  • the pin guide is placed and determines the distance between the pressure point of the spring element and the support of the snap-action disc. Now a pressure pin with appropriate length is installed.
  • the disc is used and a hood to the housing, preferably by crimping, connected.
  • the object of the present invention is to provide a thermostat or a method for its production, wherein the abovementioned disadvantages are avoided.
  • a reduction of the individual parts and an improvement of the automation possibilities in production should be achieved.
  • a permanently stable connection both in mechanical and in electrical terms, between terminals and a fixed contact element or a spring element of temperature-sensitive electrical switch can be realized.
  • a reduction of the individual parts of a temperature-sensitive electrical switch which comprises a snap element made of bimetallic strip and a spring element, a pressure pin as operative connection between snap element and spring element, a pin guide, a housing and a hood, achieved by the use of a switching bridge unit, which in turn only a few Has individual parts.
  • the switching bridge unit consists of a switching bridge, which in turn consists of only a first and a second part, and a plastic part.
  • the first and second part of the switching bridge are embedded in this plastic part and are thereby mechanically connected to each other, electrically isolated from each other and fixed in position to each other.
  • the switching bridge unit can be attached to a - depending on the desired switching path and the length of the pressure pin predetermined position - in the housing.
  • the first part comprises a first terminal section and a fixed contact section.
  • the second part has a connection section for a spring element and a second terminal section. That the first terminal portion and the fixed contact portion and the second terminal portion and the terminal portion are each made in one piece.
  • the spring element is a movable contact portion and can be moved to close the contact against the fixed contact portion.
  • the pressure pin acts as an operative connection between the snap disc and the spring element. Therefore, it is at a temperature sensitive electrical switch, comprising a snap element, preferably a snap disc made of bimetallic strip and a spring element as a movable contact portion, a fixed contact portion against which the movable contact portion for closing the contact is movable, a pressure pin as an operative connection between the snap element and spring element, a pin guide, a housing and a hood, according to the invention provided that a mounted in the housing switching bridge unit is provided, which consists of a switching bridge and a plastic part, that the switching bridge consists of a first and a second part, wherein the first part of a first terminal portion and the fixed contact portion and the second part a second terminal portion and a terminal portion to which the spring member is fixed, formed, and that the first and the second part embedded in the plastic part and connected by the plastic part and Lüf to
  • the terminal sections can act as connecting pieces, they protrude out of the plastic part.
  • the fixed contact portion also projects out of the plastic part to be contacted by the spring element can. Accordingly, it is provided in a preferred embodiment of the switch according to the invention that at least the first and the second terminal portion and the fixed contact portion protrude from the plastic part.
  • the material used for the first and second parts of the switching bridge is metal. This is on the one hand electrically conductive, on the other hand, the first and the second part can be stamped in one step on a metal strip, which simplifies production. Accordingly, it is provided in a preferred embodiment of the switch according to the invention, that it is the first and at second part of the switching bridge is in each case a stamped part made of metal.
  • the first part After punching, the first part initially has a substantially flat and in the broadest sense L-shaped form.
  • One segment of the L-shape is formed by the first terminal portion and a first center portion, another segment of the L-shape by the fixed contact portion.
  • the fixed contact portion thus forms an end region of the first part of the switching bridge.
  • the fixed contact section is bent out of the plane of the first center section and bent again at its end pointing away from the first center section.
  • the bent fixed contact portion thus forms an L-shape.
  • the first center section of the fixed contact portion forms a U-shape with a first leg, a center segment and a second leg.
  • the first center section forms the first leg.
  • the fixed contact section forms the center segment adjoining the first leg and the second leg, which runs essentially parallel to the first leg, ie, except for a maximum deviation of 5 °.
  • the first leg with the center segment and the center segment with the second leg in each case forms a right angle.
  • the fixed contact portion forms an end portion of the first part of the switching bridge, wherein the first part of the first terminal portion, a first center portion and the fixed contact portion is that the fixed contact portion L-shaped out of the plane the first center portion is bent, and that the fixed contact portion and the first center portion form a U-shape having a first leg, a center segment and a second leg, wherein the first Center portion forms the first leg and the fixed contact portion to the first leg substantially parallel second leg and the center segment.
  • a characteristic shape of the first part results, which results from the bending of the fixed contact element around bending lines extending parallel to the longitudinal axis of the first terminal section, in the case where the first terminal section is in the same plane how the first center section lies, ie before a possible bend of the first terminal section.
  • the latter is initially given immediately after the punching process, where also the fixed contact element section lies in the same plane as the first center section.
  • the center segment is bent relative to the first leg to a first bending line which is parallel to the longitudinal axis of the first terminal portion, and that the second leg is bent relative to the center segment to a second bending line, which runs parallel to the first bending line.
  • the contacting of the fixed contact portion by the spring element is preferably carried out on the second leg.
  • the spring element is in turn attached in a particularly preferred embodiment of the switch according to the invention with one end to the connection portion of the second part of the switching bridge and thus electrically connected to the second terminal portion.
  • the spring element and the fixed contact portion each have a contact profile is attached, wherein the two contact profiles each other in a contact position - preferably flat - contact. That is, in the contact position, the spring element and the fixed contact portion are electrically conductively connected to each other.
  • the connecting portion of the second part of the switching bridge is located in a particularly preferred embodiment of the switch according to the invention in the same plane as the first center portion of the first part of the switching bridge.
  • the connection section is arranged opposite the region of the fixed contact section or the center segment adjoining the first center section. Since the contacting of the fixed contact section is effected by the spring element on the second leg and the second leg is not in any case in the same plane as the first center section, the spring element has a U-shaped bend. That In a particularly preferred embodiment of the switch according to the invention it is provided that the spring element is bent in a U-shape.
  • this ensures that a free end of the spring element, with which the contacting of the fixed contact section takes place, lies in a plane which lies substantially parallel to the plane of the second leg and is significantly less spaced therefrom than the plane of the first center section.
  • the U-shaped bend allows an approximately perpendicular engagement of the pressure pin on the spring element, i. the longitudinal axis of the pressure pin is substantially perpendicular to that surface of the spring element which the pressure pin mechanically contacts. This guarantees a particularly good operative connection between snap disc and spring element and thus a reliable switching.
  • the spring element has a free end to contact the fixed contact element. At the free end can to better contact a contact profile be appropriate. This is also useful in the case where the spring element is not bent in a U-shape, but projects, for example, obliquely away from the connection section towards the fixed contact section or the second leg.
  • connection section protrudes from the plane of the first center section in the direction of the second leg.
  • the spring element could be made only strip-shaped and planar and would then lie in a plane parallel to the plane of the first center section, with the free end near the second leg.
  • a protruding of the connecting portion could be realized in particular by bending the connecting portion - in an analogous manner to the above-described bending of the fixed contact portion. That taken by itself, a correspondingly bent connecting section would have an L-shape or a correspondingly curved connecting section would form a U-shape with at least one area of the second part of the switching bridge.
  • the spring element is basically in the contact position, since this guarantees a particularly stable electrical transition.
  • the spring element When snapping the snap disc of the pressure pin presses against the spring element, whereupon the electrical contact is interrupted.
  • a contact profile is mounted on that side of the second leg which faces the first leg. Accordingly, the free end of the spring element between the first and the second leg is arranged.
  • the U-shaped bend in this case causes a particularly good pressing of the free end of the spring element attached contact profile on the contact profile of Fix.abitess.
  • the spring element is basically not in the contact position to possibly make the necessary bending operations of the fixed contact portion and the spring element easier.
  • the second leg is arranged between the first leg and the free end of the spring element.
  • the free end of the spring element has a side which faces the first and the second leg simultaneously.
  • the switch according to the invention provides that the opening of the U-shape of the spring element to the opening of the formed by the first leg, the center segment and the second leg U-shape.
  • connection section forms an end region of the second part of the switching bridge, the second part consisting of the second terminal section, a second center section and the connection section ,
  • a U-shape is formed here by the spring element, the connection section and the second center section.
  • connection portion forms an end portion of the second part of the switching bridge, wherein the second part of the second terminal portion, a second center portion and the connection portion consists, and that the second center portion, the connection portion and the spring element forming a U-shape, the opening to the opening of the formed by the first leg, the center segment and the second leg U-shape.
  • the spring element can in principle be very well bent and not necessarily be executed flat.
  • the analogy to the shape of the first part is completed in a further particularly preferred embodiment of the switch according to the invention by providing that the second terminal section is arranged parallel to the first terminal section.
  • the terminal sections are arranged in particular in alignment.
  • the tool for producing the temperature-sensitive electrical switch thus consists of individual modular components, which are arranged one behind the other, wherein the number and order can be predetermined.
  • the punching module for punching the first and second parts on the metal strip; a welding assembly module for securing the spring element; another welding assembly module for attaching contact profiles on the spring element and the fixed contact portion; a bending module for bending terminal wings; an injection molding module for partially encapsulating the first and second parts with plastic; a flexural modulus for bending the spring element; another bending module for bending the fixed contact portion; and finally, a punching module for punching the first and second parts out of the metal strip.
  • the first and the second part of the switching bridge are generated simultaneously by means of the punching module.
  • the partial end of the spring element is also encapsulated during partial encapsulation.
  • holes and / or tabs can be provided at the connected end of the spring element, which guarantee optimum hold in the plastic.
  • the positioning of the connected end of the spring element is optimized relative to the first and the second part of the switching bridge by encapsulating and the connected end of the spring element is additionally fixed in position - in addition to the attachment to the connection section.
  • the fixed contact portion is bent so that it contacted the spring element in principle. That The spring element is thus basically in a contact position. When snapping the snap disc of the pressure pin presses against the spring element, whereupon the electrical contact is interrupted.
  • the spring element in the direction of the fixed contact portion in a, preferably U-shaped shape is bent and that the bending of the spring element takes place prior to bending of the fixed contact portion.
  • the fixed contact portion must be bent so that the free end of the spring element between the first and the second leg is arranged and preferably the contact profiles contact each other surface. Therefore, it is provided in a particularly preferred embodiment of the method according to the invention that when bending the fixed contact portion, the free end of the spring element between the first and the second leg is brought into a contact position in which the contact profiles contact each other.
  • the punching on the metal strip has the advantage that the first and second part are still connected to the metal strip and can be easily and quickly transported to other tool modules, without changing their position to each other. That Steps for a new positioning of the first and second parts to each other in the next tool module omitted, whereby the number of process steps is minimized.
  • the fastening of the spring element takes place in a welding assembly module on the metal strip.
  • the fastening the contact profiles is carried out in a welding assembly module on the metal strip.
  • the partial encapsulation with plastic takes place on the metal strip in an injection molding module.
  • terminal wings can be bent on the metal strip. It is therefore provided in a further preferred embodiment of the method according to the invention that terminal wings of the first and second terminal sections are bent in a bending module on the metal strip.
  • the terminal sections can be bent into a predefinable end position in which they are available for the connection. Accordingly, it is provided in a preferred embodiment of the method according to the invention that the first and second terminal portion are bent into an end position, preferably in a bending module on the metal strip.
  • axonometric view of a temperature-sensitive electrical switch 1 according to the invention is shown, which is also referred to as a thermostat.
  • This has a preferably made of plastic housing 4, which is closed on one side by means of a hood 7.
  • the hood 7 is preferably made of a metal, for example aluminum, made and connected by crimping with the housing 4.
  • a first 10 and a second terminal portion 11 can be seen, which serve for electrical connection from the outside.
  • Fig. 2 shows a plan view of the switch 1 of Fig. 1 with indicated section lines AA and BB and arrows indicating the respective viewing directions.
  • Fig. 3 shows a sectional view along the section line AA in Fig. 2 ,
  • a curved snap disc 2 which is made of a bimetallic strip and has a circular outline, can be seen in a first curvature state.
  • the snap disc 2 rests on an inner shoulder 27 of the housing 4.
  • a pressure pin 5 does not touch the snap disc 2 in this position or in this curvature state scarcely and is supported on a spring element 6, without exerting on the spring element 6 a pressure.
  • Fig. 4 which is a sectional view along the section line BB in Fig. 2
  • the spring element 6 is bent in a U-shape and fastened with its other end 26 to a connection section 13.
  • the connection section 13 is located on a second part 9 of a switching bridge 3 (cf. Fig. 5 ), as well as the second terminal portion 11. That is, the spring element 6 is electrically connected to the second terminal portion 11.
  • the fixed contact portion 12 in turn is located on a first part 8 of the switching bridge 3 (see. Fig. 5 ), as well as the first terminal portion 10. That is, the fixed contact portion 12 is electrically connected to the first terminal portion 10. In the contact position 18, the two terminal sections 10, 11 are thus connected to one another in an electrically conductive manner.
  • the first 8 and second part 9 of the switching bridge 3 are embedded in a plastic part 16.
  • the first 8 and the second part 9 are electrically insulated from each other by the plastic part 16.
  • the plastic part 16 positions the first 8 and second part 9 to each other and fixes their position.
  • the housing 4 is attached to the plastic part 16.
  • the first part 8, the second part 9 and the plastic part 16 form a switching bridge unit 20.
  • Fig. 5 shows a plan view of the switching bridge 3, immediately after the first 8 and second part 9 by means of a Punching module (not shown) were simultaneously punched on a metal strip (not shown).
  • the first part 8 forms here as the second part 9 is a planar element and lies with this in the same plane.
  • the first part in the broadest sense has the form of an L 'rotated by 90 °, the fixed contact section 12 forming a segment of the L' s. Another segment of the L's is formed by a first center section 21 and the first terminal section 10.
  • wings 28 of the first terminal portion 10 can be seen, which are subsequently bent by dashed lines drawn bending lines 30 by 180 °.
  • Analog are in Fig. 5
  • corresponding wing 29 of the second terminal portion 11 can be seen, which are subsequently bent by dashed lines drawn bending lines 31 by 180 °.
  • Fig. 6 shows an axonometric view of the switching bridge 3, wherein the fixed contact portion 12, the contact profile 15, preferably by spot welding or laser welding is attached.
  • the spring element 6 is fastened to the end 26, preferably by spot welding or by a compression-press-joining or toxing process.
  • the contact profile 14 preferably fixed by spot welding or laser welding.
  • the first 8 and second part 9 of the switching bridge are already encapsulated with plastic or embedded in the plastic part 16, with which they form the switching bridge unit 20.
  • the plastic part 16 also support elements 32, which from the plane of the first center section 21 (see, eg Fig. 6 ) and on which an inner side 33 of the housing 4 is supported (cf. Fig. 3 ).
  • the fixed contact portion 12 and the spring element 6 are bent into the contact position 18.
  • the fixed contact portion 12 along a first bending line 34 (see. Fig. 5 ) is bent out of the plane of the first center section 21 by 90 ° and then by a further 90 ° along a second bending line 35 (cf. Fig. 5 ).
  • the first center portion 21 now forms a first leg 22 and the fixed contact portion 12 a center segment 23 and a second leg 24 of a U-shape.
  • the first bend line 34 may be considered as a fictitious boundary between the first center section 21 and the fixed contact section 12 for the purpose of simple viewing.
  • Both the first 34 and the second bending line 35 run parallel to a longitudinal axis 39 of the first terminal section 10, as long as it is not bent out of the plane of the first center section 21, cf. Fig. 5, Fig. 6 and Fig. 7 ,
  • the spring element 6 in turn is bent starting from its attached end 26 U-shaped, so that the free end 25 is disposed between the first 22 and the second leg 24. In this case, the spring element 6 presses the attached at its free end 25 contact profile 14 against the attached fixed contact portion 12 contact profile 15. In the preparation of the illustrated embodiment, the bending of the spring element 6 takes place before bending the fixed contact portion 12th
  • Fig. 9 shows an axonometric view of the subject of the Fig. 8 under a different viewing direction, with the fixed end 26 of the spring element 6 in the foreground.
  • the terminal sections 10, 11 are in this case in an end position 19.
  • the terminal sections 10, 11 are each bent by 90 °, namely antiparallel to the support members 32.
  • the bend runs for the first terminal portion 10 to a bending line 37 and for the second terminal portion 11 to a Bend line 38, see Fig. 5 ,
  • the bending line 37 can be regarded as a fictitious boundary between the first terminal section 10 and the first center section 21 for the purpose of simple viewing.
  • bend line 38 may be considered a fictitious boundary between second terminal portion 11 and a second center portion 36 of second portion 9.
  • First terminal section 11 Second terminal section 12
  • Fix.abites 13 Connection section for spring element 14
  • Contact profile of the spring element 15
  • Contact profile of the fixed contact section 16
  • Plastic part 17
  • pin guide 18
  • contact position 19
  • End position of the terminal sections 20
  • Switching bridge unit 21
  • First middle section 22
  • First leg 23 middle segment 24
  • Second thigh 25
  • Free end of the spring element 26
  • Attached end of the spring element 27
  • Inner shoulder of the housing 28 Wing of the first terminal section 29
  • Wing of the second terminal section 30 Bend line for wings of the first terminal section 31
  • Bend line for wings of the second terminal section 32 support element 33 Inside of the housing 34
  • First bending line of the fixed contact section 35
  • Second bending line of the fixed contact section 36
  • Second middle section 37

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Push-Button Switches (AREA)
  • Thermally Actuated Switches (AREA)
EP13163124.4A 2012-04-10 2013-04-10 Commutateur électrique sensible à la température et son procédé de fabrication Not-in-force EP2650897B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT1332012 2012-04-10

Publications (2)

Publication Number Publication Date
EP2650897A1 true EP2650897A1 (fr) 2013-10-16
EP2650897B1 EP2650897B1 (fr) 2016-06-29

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Application Number Title Priority Date Filing Date
EP13163124.4A Not-in-force EP2650897B1 (fr) 2012-04-10 2013-04-10 Commutateur électrique sensible à la température et son procédé de fabrication

Country Status (2)

Country Link
EP (1) EP2650897B1 (fr)
CN (2) CN103367034B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103367034B (zh) * 2012-04-10 2016-12-21 电子装置车间武姆布工程师有限公司 对温度敏感的电开关以及用于制造所述电开关的方法
CN104103455B (zh) * 2014-06-30 2017-08-04 佛山市高明西特电器有限公司 一种温控开关

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4626820A (en) * 1984-04-11 1986-12-02 Diesel Kiki Company, Ltd. Thermoswitch
US4669182A (en) * 1984-01-23 1987-06-02 Therm-O-Disc, Incorporated Method of gaging a snap disc condition sensor
FR2793348A1 (fr) * 1999-05-07 2000-11-10 Samsung Electronics Co Ltd Thermostat tripolaire

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3820055B2 (ja) * 1999-04-16 2006-09-13 ウチヤ・サーモスタット株式会社 サーマルプロテクタ
KR200386836Y1 (ko) * 2005-03-21 2005-06-16 엘에스산전 주식회사 열동형 과부하 계전기
CN103367034B (zh) * 2012-04-10 2016-12-21 电子装置车间武姆布工程师有限公司 对温度敏感的电开关以及用于制造所述电开关的方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4669182A (en) * 1984-01-23 1987-06-02 Therm-O-Disc, Incorporated Method of gaging a snap disc condition sensor
US4626820A (en) * 1984-04-11 1986-12-02 Diesel Kiki Company, Ltd. Thermoswitch
FR2793348A1 (fr) * 1999-05-07 2000-11-10 Samsung Electronics Co Ltd Thermostat tripolaire

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CN202930316U (zh) 2013-05-08
CN103367034B (zh) 2016-12-21
EP2650897B1 (fr) 2016-06-29
CN103367034A (zh) 2013-10-23

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