WO2017041285A1 - 一种海运冷藏集装箱用工业插头 - Google Patents

一种海运冷藏集装箱用工业插头 Download PDF

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Publication number
WO2017041285A1
WO2017041285A1 PCT/CN2015/089420 CN2015089420W WO2017041285A1 WO 2017041285 A1 WO2017041285 A1 WO 2017041285A1 CN 2015089420 W CN2015089420 W CN 2015089420W WO 2017041285 A1 WO2017041285 A1 WO 2017041285A1
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Prior art keywords
plug
rotating
ferrule
card slot
tension spring
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PCT/CN2015/089420
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English (en)
French (fr)
Inventor
郑进宇
刘泉
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郑进宇
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Application filed by 郑进宇 filed Critical 郑进宇
Priority to PCT/CN2015/089420 priority Critical patent/WO2017041285A1/zh
Publication of WO2017041285A1 publication Critical patent/WO2017041285A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/04—Pins or blades for co-operation with sockets
    • H01R13/05—Resilient pins or blades
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/514—Bases; Cases composed as a modular blocks or assembly, i.e. composed of co-operating parts provided with contact members or holding contact members between them
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts

Definitions

  • the invention relates to an industrial plug, in particular to an industrial plug for a marine refrigerated container.
  • the industrial plug On the seaborne refrigerated container, the industrial plug is used as a power receiving interface commonly used in the transportation of containers.
  • the versatility requirements and dimensional interchangeability requirements need to meet the standards of IEC60309.
  • IEC60309 In the international logistics and transportation industry, many containers are in transit and need to be charged to control the temperature inside the container. The actual situation is that when the container is in the A place, the A ground has a rated voltage of 380V ⁇ , 50hz, 3P+E (3P+ ground), and the ground contact is located at the 3h (3 o'clock direction) red industrial socket for power transmission.
  • the B ground often does not have such a power transmission interface, only the rated voltage is 380-415V ⁇ , 50/60hz, 3P + E (3P + ground), the ground contact is located at 6h (6 points) The red industrial socket power transmission interface of the clock direction).
  • the user has to replace the power receiving plug interface of the container, that is, replace the 3h plug with a 6h plug to ensure the normal power supply of the container. This problem of poor versatility causes great inconvenience to the user.
  • the Chinese patent CN104638481A discloses an industrial plug for a marine container, which is provided with a rotary brake pin through a central through hole in the ferrule fixing plate, and a first card slot and a first interval are respectively arranged inside the plug base. Two card slots, a slide channel is arranged between the two card slots, and by rotating and rotating the brake pin, the direction of the time at which the wire ferrule assembly is switched is driven, and the switching between the 3h and 6h directions is completed.
  • the interval of 3h to 6h it takes 4h and 5h, and the voltage of 4h, 5h and 3h or 6h is different.
  • the operator does not rotate in place at 4h or 5h. It is easy to directly connect with the socket of the container after the interval stays, which is easy to cause an accident due to voltage non-conformity.
  • the technical problem to be solved by the present invention is that the existing industrial plug is liable to cause a safety accident due to inaccurate switching.
  • the technical solution adopted by the present invention is to provide an industrial plug for a marine refrigerated container, comprising a plug base, and an upper end of the plug base is screwed with a plug sealing sheath assembly, and the plug base
  • the upper set has a ferrule fixing plate.
  • the ferrule fixing plate is provided with a plurality of connecting ferrule assemblies, and the ferrule fixing plate end sleeve is provided with a plug pressing plate adapted to the connecting ferrule assembly, and a ring card protrudes from a lower end of the plug pressing plate Block, the upper end of the plug base is provided with a first collar and a second collar from the outside to the inside, and the first collar and the second collar are formed to fit the annular block An annular groove, wherein the annular groove is provided with two tension springs respectively fixed from the two sides to the plug pressing plate;
  • a rotating brake pin is disposed in a middle portion of the ferrule fixing plate, a rotating block is protruded from a side of the rotating brake pin, and a first card slot and a second portion are spaced apart from an inner side of the second ring a sliding slot is disposed between the first card slot and the second card slot, and the rotating card block is disposed in the first card slot or the second card slot, and is uplifted and rotated by the rotating system.
  • the plug pressing plate rotates with the rotating brake pin under the action of the tension spring, and drives the rotating block to rotate from the first card slot or the second card slot into the second
  • the card slot or the first card slot further drives the terminal ferrule assembly to perform adaptive position switching.
  • the tension spring includes a first tension spring and a second tension spring which are respectively divided on both sides of the slide rail, and the annular groove is provided with two convex pillars, the first pull The solid ends of the spring and the second tension spring are respectively sleeved on the protruding column, and the inner side of the annular block has two spring mounting ears at corresponding positions, the first tension spring and the The tensile ends of the second tension spring are respectively sleeved on the spring mounting ears.
  • the stable end and the stretched end of any one of the first tension spring or the second tension spring are disposed in a counterclockwise direction of the annular groove.
  • the rotary brake pin includes a brake pin base and extends out of the brake pin a rotating seat on one side of the base, the rotating block is protruded from an outer end of the rotating base, and a lower end of the base of the brake pin protrudes downwardly with a brake stop adapted to the through hole, A rotating shaft protrudes upward from an upper end of the base of the brake pin, and a brake compression spring is sleeved on the rotating shaft, and an upper end of the rotating shaft is inserted into the plug pressing plate.
  • the wiring ferrule assembly includes a ground ferrule assembly and a plurality of FireWire ferrule assemblies disposed between the ground ferrule assembly and an adjacent one of the FireWire ferrule assemblies.
  • the rotation of the rotating block drives the ferrule fixing plate and the plug pressing plate to rotate, thereby driving the ground ferrule assembly to rotate.
  • the rotating block is located in the first card slot, the grounding The ferrule assembly is in the first position, and the ground ferrule assembly is in the second position when the rotating block is located in the second card slot.
  • the first position is at a 3 o'clock direction and the second position is at a 6 o'clock direction.
  • the plug pressing plate is provided with a rotating bushing at a position corresponding to the rotating shaft, and when the lower surface of the braking block is flush with the lower surface of the ferrule fixing plate, A gap is formed between the rotating shaft and the inner upper end surface of the rotating sleeve.
  • the tension spring pulls the plug pressure plate, and only the rotary card snaps into the first card.
  • the rotating block can be stabilized. If it stays on the slide between the first card slot and the second card slot, the force of the tension spring is immediately pulled back to the original position, so There is a situation in which an accident occurs due to the rotation not being in the middle position, which greatly improves safety.
  • Figure 1 is an exploded view of the present invention
  • Figure 2 is an exploded view of the present invention after the plug sealing sheath assembly is removed;
  • FIG. 3 is a schematic structural view of a plug base in the present invention.
  • Figure 4 is a schematic structural view of a plug press plate of the present invention.
  • Figure 5 is an exploded view of the rotary brake pin of the present invention.
  • Figure 6 is a plan view showing the plug sealing sheath assembly and the plug pressing plate removed in the present invention.
  • Figure 7 is a bottom view of Figure 6.
  • the present invention provides an industrial plug for a marine refrigerated container, comprising a plug base 10, a plug press plate 20, a ferrule fixing plate 40 and a plug sealing sheath assembly.
  • the upper end of the plug base 10 is screwed.
  • the plug sealing sheath assembly comprises a sealing sheath body 30, a locking nut 32 and a locking ring 31.
  • the locking nut 32 and the locking ring 31 are respectively located at an upper portion and a lower portion of the sealing sheath body 30, and are respectively connected to the sealing by screwing.
  • the outer side of the sheath body 30 is provided with a tight sealing plug in the locking nut 32.
  • the sealing ring 31 in the lower part of the sealing sheath body 30 is provided with a sealing groove, and an O-ring is arranged in the sealing groove, and the sealing sheath is provided.
  • the body 30 forms a sealing structure with the upper end ring of the plug base 10 through the O-ring, and can seal when the plug is connected to the socket.
  • the lower end of the sealing sheath body 30 is screwed onto the plug base 10.
  • the plug base 10 is provided with a ferrule fixing plate 40.
  • the ferrule fixing plate 40 is sequentially provided with a plurality of wiring ferrule assemblies, and the wiring ferrule assembly includes a ground ferrule assembly 41 and a plurality of FireWire ferrule assemblies 42.
  • the grounding ferrule assembly 41 is used for connecting the grounding wire, and the live wire ferrule assembly 42 is connected to the live wire.
  • the number of the live wire ferrule assembly 42 is three, and the position of the grounding ferrule assembly 41 determines that the industrial plug is located. 3H (3 o'clock direction) or 6H (6 o'clock direction).
  • An annular shield 43 is disposed on the ferrule fixing plate 40 at a position corresponding to each of the terminal ferrule assemblies, and the upper side surface of the annular shield 43 is provided with a slot, and the wiring ferrule assembly is fixed by screws through the slot. The ferrule is fixed on the plate 40.
  • the upper end of the ferrule fixing plate 40 is sleeved with a plug pressing plate 20 adapted to the terminal ferrule assembly, and the upper end of the plug pressing plate 20 corresponds to the slot on the annular guard 43.
  • the position is provided with an adapted notch 21 for easy installation and removal of the screw.
  • the plug pressure plate 20 has a matching circular hole at a position corresponding to the upper end of the terminal ferrule assembly for convenient wiring.
  • the lower end of the plug press plate 20 protrudes from the annular block 22, and the upper end of the plug base 10 is provided with a first collar 11 and a second collar 12 from the outside to the inside, between the first collar 11 and the second collar 12
  • An annular groove 13 is formed which is adapted to the annular block 22, and the plug platen 20 is relatively rotatable in the annular groove 13 by the annular block 22.
  • a plurality of first twisting strip edges 111 are disposed on the outer side of the first collar 11 , and a plurality of second twisting strip edges that can be fitted and engaged are provided at corresponding positions on the inner side of the sealing sheath body 30, each time passing When the sealing sheath body 30 is screwed, the second twisting strip ⁇ can push the first rotating strip rib 111 to rotate, thereby driving the plug base 10 to rotate.
  • the center of the ferrule fixing plate 40 is provided with a through hole, and a rotating brake pin 50 is disposed in the through hole from bottom to top, and the rotating brake pin 50 is disposed at the ground ferrule assembly 41.
  • a rotating latching block 54 is protruded from a side of the rotating latching pin 50.
  • the first latching slot 121 and the second latching slot 122 are spaced apart from the inner side of the second retaining ring 12, and the first latching slot 121 and the second latching slot 122 are A slide 123 for rotating the block 54 to switch the gear position is provided.
  • the annular groove 13 is provided with two tension springs respectively fixed to the plug pressure plate 20 from both sides, and the tension spring includes a first tension spring 14 and a second tension spring 15 distributed on both sides of the slideway 123.
  • Two annular pedestals 131 are disposed in the annular groove 13.
  • the stable ends of the first tension spring 14 and the second tension spring 15 are respectively sleeved on the protruding column 131, and the inner side of the annular block 22 is correspondingly opened.
  • the stable end and the stretched end of any one of the first tension spring 14 or the second tension spring 15 of the present invention are disposed in the counterclockwise direction of the annular groove 13. Therefore, when the plug pressing plate 20 rotates in the counterclockwise direction, the second tension spring 15 generates a spring pulling force in the clockwise direction to the annular block 22, and when the plug pressing plate 20 rotates in the clockwise direction, the first tension spring 14 faces the ring card. Block 22 produces a spring pull in a counterclockwise direction.
  • the rotary brake pin 50 includes a brake pin base 52 and a rotary seat 53 extending from the side of the brake pin base 52, and the rotary stopper 54 is protruded from the outer end of the rotary base 53.
  • the lower end of the brake pin base 52 protrudes downwardly with a brake stopper 56 adapted to the center through hole of the ferrule fixing plate 40, and the brake stopper 56 can be positioned in the through hole at the center of the ferrule fixing plate 40.
  • the rotary seat 53 is provided with a threaded hole 57. The fastening bolt passes through the threaded hole 57 to fix the rotary brake pin 50 to the ferrule fixing plate 40.
  • the plug pressure plate 20 can be simultaneously driven. And the ferrule fixing plate 40 rotates.
  • a rotating shaft 55 is protruded upward from the upper end of the brake pin base 52, and a brake compression spring 51 is sleeved on the rotating shaft 55.
  • the upper end of the rotating shaft 55 bears against the plug pressing plate 20.
  • a rotary bushing 24 is provided on the plug pressing plate 20 at a position corresponding to the rotating shaft 55.
  • the rotating block 54 rotates to drive the ferrule fixing plate 40 and the plug pressing plate 20 to rotate, thereby driving the ground ferrule assembly to rotate, and the plug pressing plate 20 is subjected to the spring resistance of the first tension spring 14 or the second tension spring 15 during the rotation of the plug pressing plate 20.
  • the rotating block 54 is located in the first card slot 121, the grounding ferrule assembly 41 stays in the first position, and the preferred first position of the present invention is in the 3 o'clock direction, that is, the grounding ferrule assembly is located at the 3 o'clock direction;
  • the block 54 stays in the second card slot 122, the ground ferrule assembly 41 is in the second position.
  • the preferred second position of the present invention is at the 6 o'clock direction, that is, the ground ferrule assembly is located at 6 o'clock. If the rotating block 54 is on the chute 123, the rotating block 54 will be quickly pulled back to the original position due to the resistance of the spring to prevent it from staying on the chute 123.
  • the rotary block 54 when the rotary block 54 is switched, only a screwdriver or other external force is used to slightly push up the brake block 56 for a distance, and at the same time, the brake block 56 is rotated, and the rotary brake block 56 drives the rotary brake.
  • the pin 50 rotates, thereby rotating the rotating block 54 from the first card slot 11 (or the second card slot 12) into the second card slot 12 (or the first card slot 11) to complete the transition of the position of the rotating block 54.
  • the grounding ferrule assembly 41 is driven from the 3 o'clock direction (or 6 o'clock direction) to the 6 o'clock direction (or 3 o'clock direction).
  • the rotating block 54 cannot stay at 4 o'clock or 5 o'clock between 3 o'clock and 6 o'clock, effectively avoiding the hidden danger caused by the voltage mismatch caused by the misalignment.
  • the first tension spring or the second tension spring pulls the plug pressure plate, only the rotary card
  • the rotating card block can be stabilized. If it stays on the slideway between the first card slot and the second card slot, it will immediately pull back the force of the tension spring. The original position, so there is no accident caused by the rotation not being in the middle position, which greatly increases the safety.

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Abstract

一种海运冷藏集装箱用工业插头，包括插头基座（10），插头基座（10）上装有插芯固定板（40），插芯固定板（40）上端套设有与接线插芯组件（41、42）适配的插头压板（20），插头压板（20）的下端凸出有环形卡块（22），插头基座（10）的上端设有第一卡圈（11）和第二卡圈（12），两者之间形成环形凹槽（13），环形凹槽（13）内装有两根分别从两侧与插头压板（20）固定的拉簧（14、15）；第二卡圈（12）的内侧间隔开有第一卡槽（121）和第二卡槽（122），第一卡槽（121）和第二卡槽（122）之间设有滑道（123），向上顶起并旋转旋转制动销（50），插头压板（20）在拉簧（14、15）的作用下随所述旋转制动销（50）转动，带动旋转卡块（54）在第一卡槽（121）与第二卡槽（122）内切换。只有旋转卡块（54）卡入第一卡槽（121）或第二卡槽（122）当中时，旋转卡块（54）才能稳定，如果在滑道（123）上停留时，会立刻在拉簧（14、15）的作用力下拉回原来的位置。

Description

一种海运冷藏集装箱用工业插头 技术领域
本发明涉及工业插头，具体涉及一种海运冷藏集装箱用工业插头。
背景技术
在海运冷藏集装箱上面，工业插头作为集装箱在运输过程中常用的受电接口，其通用性要求和尺寸互换性要求需要符合IEC60309的标准。在国际物流运输行业中，有很多集装箱在运输途中，需要带电工作，以控制集装箱内的温度。现在的实际情况是，集装箱在A地的时候，A地有额定电压为380V～，50hz，3P+E(3P+接地)，接地触头位于3h(3点钟方向)的红色工业用插座送电接口，而当集装箱到了B地的时候，B地往往没有这样的送电接口，只有额定电压为380-415V～，50/60hz，3P+E(3P+接地)，接地触头位于6h(6点钟方向)的红色工业用插座送电接口。此时，用户不得不更换集装箱的受电插头接口，即用6h的插头来代替3h的插头，以保证集装箱的正常供电，这种通用性差的问题给用户造成了极大的不便。
为了解决上述问题，中国专利CN104638481A公开了一种海运集装箱用工业插头，通过在插芯固定板的中心通孔内穿设有旋转制动销,插头基座内侧间隔开有第一卡槽和第二卡槽，两卡槽之间设置滑道,通过顶起并转动旋转制动销,带动接线插芯组件转换所在的时刻方向，完成3h和6h方向的切换。但是在3h到6h的区间需要经过4h和5h，而4h、5h和3h或6h的电压是不一样，在工业插头从3h旋转到6h的过程中万一操作工没有旋转到位在4h或5h的区间停留后直接和集装箱的插座对接很容易因电压不符合，造成事故。
发明内容
本发明所要解决的技术问题是现有的工业用插头因切换不准确若易造成安全事故的问题。
为了解决上述技术问题，本发明所采用的技术方案是提供一种海运冷藏集装箱用工业插头，包括插头基座，所述插头基座的上端旋拧有插头密封护套组件，所述插头基座上套装有插芯固定板，
所述插芯固定板上装有若干个接线插芯组件，所述插芯固定板上端套设有与所述接线插芯组件相适配的插头压板，所述插头压板的下端凸出有环形卡块，所述插头基座的上端自外向内间隔设有第一卡圈和第二卡圈，所述第一卡圈和所述第二卡圈之间形成与所述环形卡块相适配的环形凹槽，所述环形凹槽内装有两根分别从两侧与所述插头压板固定的拉簧；
所述插芯固定板的中部贯穿设有旋转制动销，所述旋转制动销的一侧凸出有旋转卡块，所述第二卡圈的内侧间隔开有第一卡槽和第二卡槽，所述第一卡槽和第二卡槽之间设有滑道，所述旋转卡块置于所述第一卡槽或第二卡槽内，向上顶起并旋转所述旋转制动销，所述插头压板在所述拉簧的作用下随所述旋转制动销转动，带动所述旋转卡块自所述第一卡槽或所述第二卡槽旋转进入所述第二卡槽或第一卡槽内，进而带动所述接线插芯组件做出适应性位置切换。
在上述方案中，所述拉簧包括分部在所述滑道两侧的第一拉簧和第二拉簧，所述环形凹槽内设有两个凸起柱台，所述第一拉簧和所述第二拉簧的稳固端分别套设在所述凸起柱台上，所述环形卡块的内侧相对应的位置开有两个弹簧挂耳，所述第一拉簧和所述第二拉簧的拉伸端分别套设在所述弹簧挂耳上。
在上述方案中，任意一个所述第一拉簧或所述第二拉簧的稳固端与拉伸端之间均沿所述环形凹槽的逆时针方向设置。
在上述方案中，所述旋转制动销包括制动销底座和延伸出所述制动销 底座一侧的旋转座，所述旋转挡块凸设在所述旋转座的外端，所述制动销底座的下端向下凸出有与所述通孔相适配的制动挡块，所述制动销底座的上端向上凸出有旋转轴，所述旋转轴上套设有制动压缩弹簧，所述旋转轴的上端插入所述插头压板内。
在上述方案中，所述接线插芯组件包括接地插芯组件和多个火线插芯组件，所述旋转制动销设置在所述接地插芯组件和相邻的一个火线插芯组件之间。
在上述方案中，所述旋转卡块转动带动所述插芯固定板和所述插头压板转动，进而带动所述接地插芯组件转动，所述旋转卡块位于第一卡槽时，所述接地插芯组件位于第一位置，所述旋转卡块位于第二卡槽时，所述接地插芯组件位于第二位置。
在上述方案中，所述第一位置位于3点钟方向，所述第二位置位于6点钟方向。
在上述方案中，所述插头压板上与所述旋转轴相对应的位置设有旋转轴套，所述制动挡块的下表面与所述插芯固定板的下表面平齐时，所述旋转轴与所述旋转轴套的内部上端面之间形成一段间隙。
本发明，通过在环形凹槽内设置两个拉簧，当旋转卡块在第一卡槽和第二卡槽之间切换时，拉簧通过拉动插头压板，只有旋转卡块卡入第一卡槽或者第二卡槽当中时，旋转卡块才能稳定，如果在第一卡槽和第二卡槽之间的滑道上停留时，会立刻在拉簧的作用力下拉回原来的位置，因此不会发生因旋转不到位停留在中间位置进而造成事故的情况，大大提高了安全性。
附图说明
图1为本发明的分解图；
图2为本发明去掉插头密封护套组件后的分解图；
图3为本发明中插头基座的结构示意图；
图4为本发明中插头压板的结构示意图；
图5为本发明中旋转制动销的分解图；
图6为本发明中去掉插头密封护套组件和插头压板的俯视图；
图7为图6的仰视图。
具体实施方式
下面结合说明书附图对本发明做出详细说明。
如图1所示，本发明提供了一种海运冷藏集装箱用工业插头，包括插头基座10、插头压板20、插芯固定板40和插头密封护套组件，插头基座10的上端旋拧有插头密封护套组件，插头密封护套组件用以密封和保护插头基座10。插头密封护套组件包括密封护套本体30、锁紧螺帽32和锁圈31，锁紧螺帽32和锁圈31分别位于密封护套本体30的上部和下部，均通过旋拧连接于密封护套本体30的外侧，锁紧螺帽32内套装有紧线密封塞头，密封护套本体30下部的锁圈31内设有密封槽，密封槽内设有O型密封圈，密封护套本体30通过O型密封圈与插头基座10上端圆环形成密封结构，在插头与插座连接时可以起到密封作用，密封护套本体30的下端旋拧套装在插头基座10上。
插头基座10上套装有插芯固定板40，插芯固定板40上依次环绕装设有若干个接线插芯组件，接线插芯组件包括接地插芯组件41和多个火线插芯组件42，其中接地插芯组件41用于连接地线，火线插芯组件42连接火线，本发明中，火线插芯组件42的个数为三个，接地插芯组件41的位置决定了该工业插头是位于3H(3点钟方向)还是6H(6点钟方向)。插芯固定板40上与每个接线插芯组件相对应的位置设有环形护板43，环形护板43的上部侧面开有槽孔，接线插芯组件采用螺丝穿过槽孔将其固定在插芯固定板40上。
结合图2、图3和图4，插芯固定板40上端套设有与接线插芯组件相适配的插头压板20，插头压板20的上端在与环形护板43上的槽孔相对应的位置开有适配的槽口21，以方便安装和拆卸螺丝，插头压板20在与接线插芯组件的上端相对应的位置开有相适配的圆孔，方便接线。插头压板20的下端凸出有环形卡块22，插头基座10的上端自外向内间隔设有第一卡圈11和第二卡圈12，第一卡圈11和第二卡圈12之间形成与环形卡块22相适配的环形凹槽13，插头压板20可通过环形卡块22在环形凹槽13相对转动。
第一卡圈11的外侧间隔设有多个第一旋拧条棱111，密封护套本体30内侧相对应的位置设有可以适配卡接的多个第二旋拧条棱，每次通过旋拧密封护套本体30时，第二旋拧条堎可以推动第一旋拧条棱111转动，从而带动插头基座10转动。
结合图1、图3和图5，插芯固定板40的中心开有通孔，通孔内自下而上穿设有旋转制动销50，旋转制动销50设置在接地插芯组件41和相邻的一个火线插芯组件42之间。旋转制动销50的一侧凸出有旋转卡块54，第二卡圈12的内侧间隔开有第一卡槽121和第二卡槽122，第一卡槽121和第二卡槽122之间设有用于旋转卡块54切换档位时的滑道123。
环形凹槽13内装有两根分别从两侧与插头压板20固定的拉簧，拉簧包括分布在滑道123两侧的第一拉簧14和第二拉簧15。环形凹槽13内设有两个凸起柱台131，第一拉簧14和第二拉簧15的稳固端分别套设在凸起柱131上，环形卡块22的内侧相对应的位置开有两个弹簧挂耳23，第一拉簧14和第二拉簧15的拉伸端分别套设在弹簧挂耳23上。本发明中任意一个第一拉簧14或第二拉簧15的稳固端与拉伸端之间均沿环形凹槽13的逆时针方向设置。因此，当插头压板20沿逆时针方向旋转时，第二拉簧15对环形卡块22产生顺时针方向的弹簧拉力，当插头压板20沿顺时针方向旋转时，第一拉簧14对环形卡块22产生逆时针方向的弹簧拉力。
结合图5、图6和图7，旋转制动销50包括制动销底座52和延伸出制动销底座52一侧的旋转座53，旋转挡块54凸设在旋转座53的外端，制动销底座52的下端向下凸出有与插芯固定板40的中心的通孔相适配的制动挡块56，制动挡块56可以在插芯固定板40的中心的通孔内上下滑动。旋转座53上开有螺纹孔57，紧固螺栓穿过螺纹孔57将旋转制动销50固定在插芯固定板40上，因此，当旋转制动销50转动时，可同时带动插头压板20和插芯固定板40转动。制动销底座52的上端向上凸出有旋转轴55，旋转轴55上套设有制动压缩弹簧51，旋转轴55的上端顶住插头压板20。插头压板20上与旋转轴55相对应的位置设有旋转轴套24，制动挡块56的下表面与插头固定板10的下表面平齐时，旋转轴55与旋转轴套24的内部上端面之间形成一段间距，旋转轴55能够在该间距内上下移动。
本发明，旋转卡块54转动带动插芯固定板40和插头压板20转动，进而带动接地插芯组件转动，插头压板20转动过程中将受到第一拉簧14或者第二拉簧15的弹簧阻力。只有旋转卡块54位于第一卡槽121时，接地插芯组件41停留在第一位置，本发明优选第一位置位于3点钟方向，即接地插芯组件位于3点钟方向；当旋转卡块54停留在在第二卡槽122时，接地插芯组件41位于第二位置，本发明优选第二位置位于6点钟方向，即接地插芯组件位于6点钟方向。如果旋转卡块54处于滑道123上时，由于弹簧阻力的作用将会迅速将旋转卡块54拉回原来的位置，防止停留在滑道123上。
本发明中，在转换旋转卡块54时，只需采用螺丝刀或者其他外力向上稍微顶起制动挡块56一段距离，并同时旋转制动挡块56，旋转制动挡块56带动旋转制动销50转动，进而带动旋转卡块54自第一卡槽11(或第二卡槽12)旋转进入第二卡槽12(或第一卡槽11内)，完成旋转卡块54位置的转变，同时带动接地插芯组件41从3点钟方向(或6点钟方向)，切换到6点钟方向(或3点钟方向)。另外由于第一拉簧14和第二拉簧15的 存在，旋转卡块54不可能停留在3点钟与6点钟之间的4点钟或者5点钟上，有效避免了因切换不准导致电压不符造成安全事故的隐患。
本发明，通过在环形凹槽内设置两个拉簧，当旋转卡块在第一卡槽和第二卡槽之间切换时，第一拉簧或第二拉簧拉动插头压板，只有旋转卡块卡入第一卡槽或者第二卡槽当中时，旋转卡块才能稳定，如果在第一卡槽和第二卡槽之间的滑道上停留时，会立刻在拉簧的作用力下拉回原来的位置，因此不会发生因旋转不到位停留在中间位置进而造成事故的情况，大大提高了安全性。
本发明不局限于上述最佳实施方式，任何人应该得知在本发明的启示下作出的结构变化，凡是与本发明具有相同或相近的技术方案，均落入本发明的保护范围之内。

Claims (8)

  1. 一种海运冷藏集装箱用工业插头，包括插头基座，所述插头基座的上端旋拧有插头密封护套组件，所述插头基座上套装有插芯固定板，其特征在于，
    所述插芯固定板上装有若干个接线插芯组件，所述插芯固定板上端套设有与所述接线插芯组件相适配的插头压板，所述插头压板的下端凸出有环形卡块，所述插头基座的上端自外向内间隔设有第一卡圈和第二卡圈，所述第一卡圈和所述第二卡圈之间形成与所述环形卡块相适配的环形凹槽，所述环形凹槽内装有两根分别从两侧与所述插头压板固定的拉簧；
    所述插芯固定板的中部贯穿设有旋转制动销，所述旋转制动销的一侧凸出有旋转卡块，所述第二卡圈的内侧间隔开有第一卡槽和第二卡槽，所述第一卡槽和第二卡槽之间设有滑道，所述旋转卡块置于所述第一卡槽或第二卡槽内，向上顶起并旋转所述旋转制动销，所述插头压板在所述拉簧的作用下随所述旋转制动销转动，带动所述旋转卡块自所述第一卡槽或所述第二卡槽旋转进入所述第二卡槽或第一卡槽内，进而带动所述接线插芯组件做出适应性位置切换。
  2. 如权利要求1所述的一种海运冷藏集装箱用工业插头，其特征在于，所述拉簧包括分布在所述滑道两侧的第一拉簧和第二拉簧，所述环形凹槽内设有两个凸起柱台，所述第一拉簧和所述第二拉簧的稳固端分别套设在所述凸起柱台上，所述环形卡块的内侧相对应的位置开有两个弹簧挂耳，所述第一拉簧和所述第二拉簧的拉伸端分别套设在所述弹簧挂耳上。
  3. 如权利要求2所述的一种海运冷藏集装箱用工业插头，其特征在于，任意一个所述第一拉簧或所述第二拉簧的稳固端与拉伸端之间均沿所述环形凹槽的逆时针方向设置。
  4. 如权利要求1所述的一种海运冷藏集装箱用工业插头，其特征在于，所述旋转制动销包括制动销底座和延伸出所述制动销底座一侧的旋转座， 所述旋转挡块凸设在所述旋转座的外端，所述插芯固定板的中心开有通孔，所述制动销底座的下端向下凸出有与所述通孔相适配的制动挡块，所述制动销底座的上端向上凸出有旋转轴，所述旋转轴上套设有制动压缩弹簧，所述旋转轴的上端插入所述插头压板内。
  5. 如权利要求1所述的一种海运冷藏集装箱用工业插头，其特征在于，所述接线插芯组件包括接地插芯组件和多个火线插芯组件，所述旋转制动销设置在所述接地插芯组件和相邻的一个火线插芯组件之间。
  6. 如权利要求5所述的一种海运冷藏集装箱用工业插头，其特征在于，所述旋转卡块转动带动所述插芯固定板和所述插头压板转动，进而带动所述接地插芯组件转动，所述旋转卡块位于第一卡槽时，所述接地插芯组件位于第一位置，所述旋转卡块位于第二卡槽时，所述接地插芯组件位于第二位置。
  7. 如权利要求6所述的一种海运冷藏集装箱用工业插头，其特征在于，所述第一位置位于3点钟方向，所述第二位置位于6点钟方向。
  8. 如权利要求4所述的一种海运冷藏集装箱用工业插头，其特征在于，所述插头压板上与所述旋转轴相对应的位置设有旋转轴套，所述制动挡块的下表面与所述插芯固定板的下表面平齐时，所述旋转轴与所述旋转轴套的内部上端面之间形成一段间隙。
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