Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
  • F16L37/00—Couplings of the quick-acting type
  • F16L37/22—Couplings of the quick-acting type in which the connection is maintained by means of balls, rollers or helical springs under radial pressure between the parts
  • F16L37/23—Couplings of the quick-acting type in which the connection is maintained by means of balls, rollers or helical springs under radial pressure between the parts by means of balls
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
  • F16L37/00—Couplings of the quick-acting type
  • F16L37/28—Couplings of the quick-acting type with fluid cut-off means
  • F16L37/38—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in only one of the two pipe-end fittings
  • F16L37/40—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in only one of the two pipe-end fittings with a lift valve being opened automatically when the coupling is applied
  • F16L37/407—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in only one of the two pipe-end fittings with a lift valve being opened automatically when the coupling is applied the lift valve being of the ball type
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
  • F16L37/00—Couplings of the quick-acting type
  • F16L37/28—Couplings of the quick-acting type with fluid cut-off means
  • F16L37/38—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in only one of the two pipe-end fittings
  • F16L37/44—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in only one of the two pipe-end fittings with one lift valve being actuated to initiate the flow through the coupling after the two coupling parts are locked against withdrawal

Definitions

• the present invention relates to a pipe joint provided with a valve, and more particularly to a pipe joint that can open a valve with a small force even when the pressure inside a fluid pipe to which the pipe joint is connected is high.
• Patent Document 1 Such a pipe joint is disclosed in Patent Document 1, for example.
• the pipe joint of Patent Document 1 is a valve in which a female member is fixed in a fluid passage of the female member, one end is opened toward an end portion that receives the male member, and the other end is closed.
• a valve support member having a storage recess;
• the valve member is slidably housed in the valve housing recess and is urged toward the valve seat by a panel.
• the valve member is formed with a communication hole that communicates the inside of the valve housing recess with the outside on the side that receives the male member.
• Patent Document 1 Japanese Utility Model Publication No. 50-57021
• valve member In the pipe joint of Patent Document 1, the valve member is engaged with the valve seat by panel pressure to achieve a sealing property between the valve member and the valve seat. Deteriorate.
• a seal ring is attached around the valve member, and the seal ring is slidably engaged with the peripheral wall of the valve storage recess so as to achieve a sealing property between them.
• adhering to the peripheral wall There is a possibility of adhering to the peripheral wall, and when the male member is separated from the female member force, the valve member is not sufficiently returned by the panel inside the valve housing recess, and there is a risk of leakage. is there.
• an object of the present invention is to provide a pipe joint capable of connecting a female mold and a male mold member with a light operation and having high sealing performance.
• the present invention provides:
• the first joint member is
• a tubular member comprising a fluid passage
• An annular valve seat provided around the fluid passage of the tubular member
• a valve member provided in the cylindrical member, which opens and closes the fluid passage by engaging and disengaging the valve seat;
• a valve support member provided in the fluid passage of the cylindrical member and supporting the valve member
• the valve support member is a valve storage recess that opens to face the valve seat, and the valve member is stored in a displaceable manner for disengaging the engagement with the valve seat.
• a valve housing recess defining a back pressure chamber therebetween, and a communication passage allowing introduction of pressurized fluid from the fluid passage into the back pressure chamber,
• the valve member has a first valve portion and a second valve portion
• the first valve portion includes a front surface having an annular engagement surface that can be engaged with the valve seat, and passes through the first valve portion inside the annular engagement surface at the front surface, A through-hole communicating with the back pressure chamber and the outside of the valve support member;
• the second valve portion is urged by the urging means to close the through hole, and the second valve portion is piled up in the fluid pressure in the back pressure chamber that is applied to the urging means and the second valve portion.
• the through-hole is opened and the fluid pressure in the back pressure chamber decreases, so that the fluid pressure in the fluid passage on the outer surface of the first valve portion causes the first valve portion to move.
• a pipe joint which is pushed into the valve housing recess and is separated from the valve seat.
• valve member When the valve member is closed, the pipe member is subjected to the fluid pressure in the first joint member and the urging force of the urging means in the valve housing recess.
• the valve member faces the valve seat
• the valve member When the valve member is opened, the valve member is pushed by pushing the second valve portion against the urging force and fluid pressure of the urging means acting on the second valve portion. Can be opened. That is, the valve member can be reliably closed and opened with a small force.
• the peripheral surface of the first valve portion that is displaceable in the axial direction of the cylindrical member with respect to the valve seat has a first valve portion sliding surface that slides with the peripheral surface of the valve housing recess, A gap formed between the first valve portion sliding surface and the peripheral surface of the valve housing recess can be used as the communication path.
• the support member may be provided with a small hole that communicates the fluid path located outside and the back pressure chamber, and the small hole may be used as the communication path.
• the communication passage allows the back pressure chamber to be filled with pressurized fluid, and when the second valve portion opens the through hole of the first valve portion, the back pressure chamber is connected via the communication passage. It is necessary to allow the pressurized fluid in the back pressure chamber to flow out of the through-hole force faster than the pressurized fluid flows into the channel, and the flow passage area of the communication path needs to be accurate. When the gap is used as a communication path, it is difficult to accurately create the flow path area. On the other hand, the small holes provided in the support member can accurately produce the flow path area. .
• a diaphragm that is connected between the inner peripheral surface of the valve housing recess and the first valve portion and that fluid-blocks the fluid passage located outside the valve support member and the back pressure chamber. Good.
• the gap is blocked, and the pressurized fluid entering the back pressure chamber from the fluid passage can only flow through the small hole.
• it is relatively easy to accurately form the cross section of the small hole it is possible to easily adjust the inflow of the pressurized fluid into the back pressure chamber.
• valve member can be opened only by connecting the second joint member to the first joint member, and the connecting operation can be simplified. [0016] Specifically,
• the second joint member is a male member
• the first joint member is a female member having a joint member receiving portion for receiving the second joint member
• the first joint member has a valve pushing member between the joint member receiving portion and the valve member, and when the second joint member is inserted into the joint member receiving portion, the valve pushing member is interposed therebetween. Thus, the second joint member pushes the second valve portion of the valve member to open the through hole.
• the first joint member includes a seal ring between the joint member receiving portion and the valve member, and before the second joint member is inserted into the joint member receiving portion and pushes the pushing member, the seal It is preferable that the ring is sealingly engaged with the outer surface of the second joint member.
• connection portion of the first joint member to the second joint member is sealed before the valve member is opened, so that no fluid leaks. It is.
• the joint member receiving portion has a locking member that is displaceable in the radial direction with respect to the fluid passage
• a locking recess which is engaged with the locking member when the second joint member is inserted into the first joint member receiving portion so that the second joint member cannot be pulled out of the force of the first joint member;
• the first valve portion of the valve member is preferably separated from the valve seat when the locking member is engaged with the locking recess. This is so that the first and second joint members can be connected safely.
• the first joint member that does not open the valve member in accordance with the connecting operation of the second joint member to the first joint member is the first joint member.
• the valve member is provided with valve operating means for moving the second valve part so as to open and close the through hole of the first valve part.
• the valve storage recess of the valve support member has a first valve portion storage portion for storing the first valve portion of the valve member, and a second valve portion storage for slidably storing the second valve portion.
• first valve portion storage portion for storing the first valve portion of the valve member
• second valve portion storage for slidably storing the second valve portion.
• the valve operating means has an operation pin extending from the outside of the first joint member into the valve support member and connected to the second valve portion of the valve member;
• the valve support member is a pin storage hole extending from the second valve portion storage portion toward the outside of the cylindrical member, and the operation pin is stored in the pin storage hole, and the operation pin is It has a pin holding part having a pin housing hole which is powered by the operation of the outer force of the first joint member so that the through hole of the first valve part of the valve member can be opened and closed. You can.
• the operation pin extends so as to cross the tubular member
• the first joint member has an operation member provided on an outer peripheral surface of the cylindrical member and engaged with both ends of the operation pin;
• the operation pin is moved by the operation member, and the second valve portion of the valve member can be operated.
• the operating member is rotatable in the circumferential direction around the cylindrical member, and has a cam contour portion that engages with both ends of the operating pin. Both ends of the pin can move relatively along the cam profile, thereby rubbing to manipulate the second valve portion of the valve member.
• first valve portion and the second valve portion of the valve member are connected to each other after the second valve portion is powered to open the through hole, and the second valve portion is further moved.
• the first valve part from the valve seat It is preferable to be powered together to leave.
• the second valve member is prevented from inadvertently engaging the valve seat in a state where the fluid passages of the first and second joint members are in communication.
• the joint member holds the first joint member.
• the through hole is inserted through the through hole.
• the pin is communicated with the front side of the first valve portion and communicated with the pin housing hole, and when the second valve portion of the valve member is in a position to open the through hole. It is preferable to have a residual pressure relief hole that is hermetically sealed from the storage hole.
• this residual pressure relief hole is hermetically sealed in a state where the through hole is opened and the valve member is opened (that is, the first and second joint members are in communication).
• the closed state that is, the state where the communication of the first and second joint members is blocked
• the fluid passage of the second joint member is communicated with the outside of the pipe joint, and is located inside the second joint member. This makes it possible to release the residual pressure, and to safely remove the second joint member force from the first joint member.
• the valve member is configured by the first valve portion and the second valve portion and is set in the valve storage recess, and when the valve member is closed, the valve storage recess
• the fluid pressure of the fluid passage of the joint member communicated with the inside and the urging force of the urging means set in the valve housing recess press the valve member against the valve seat to ensure that the valve member is in the closed position.
• the second valve portion of the valve member can be opened with a small force by simply staking it to the urging force and fluid pressure applied to the second valve portion.
• FIG. 1 is a cross-sectional view of a first joint member of a pipe joint according to a first embodiment of the present invention, in which a second joint member is not connected and shows a valve closed state.
• FIG. 2 is a cross-sectional view showing a state in the middle of connecting the second joint member to the first joint member.
• FIG. 3 is a cross-sectional view of the first joint member connected to the second joint member and showing a valve open state.
• FIG. 4 is a cross-sectional view of a pipe joint according to a second embodiment of the present invention, showing a valve closed state.
• FIG. 5a is a plan view showing a detailed configuration of a valve support member in the pipe joint of FIG.
• 5b is a cross-sectional view showing a detailed configuration of a valve support member in the pipe joint of FIG.
• FIG. 5c is a front sectional view showing a detailed configuration of a valve support member in the pipe joint of FIG.
• FIG. 5d is a side view showing a detailed configuration of a valve support member in the pipe joint of FIG.
• FIG. 6 A sectional view taken along line AA in FIG. 4 is shown.
• FIG. 7 is a plan view of the operation ring shown in FIG. 4, showing the relationship between the guide groove and the operation pin.
• FIG. 8a is a plan view showing a detailed configuration of the pilot valve section shown in FIG.
• FIG. 8b is a longitudinal sectional view showing a detailed configuration of the pilot valve section shown in FIG.
• FIG. 8c is a cross-sectional view showing a detailed configuration of the pilot valve portion shown in FIG.
• FIG. 9 is a sectional view similar to FIG. 4, showing a state in which the first and second joint members are connected and the valve is opened.
• the pipe joint 2 includes a first joint member 21 as a female member and a second joint as a male member inserted and connected to the female member. Member 22.
• the first joint member 21 is a state in which a sleeve 78 is externally fitted with a first tubular member 70 to which a pipe (not shown) such as a hose of an air pipe is connected to one end. And a second cylindrical member 80 that is screwed to the other end of the first cylindrical member 70.
• the first tubular member 70 includes a fluid passage 72, a cone-shaped valve support member 74 disposed in the fluid passage 72, and a valve member 76 provided in the valve support member 74.
• the first tubular member 70 and the second tubular member 80 are sealed with an O-ring 82.
• a tapered through-hole 86 is provided in the inner portion of the sleeve 78 in the second cylindrical member 80, and a locking member 88 is accommodated in the second cylindrical member 80, as shown in FIG.
• the locking member 88 engages with a locking recess 89 on the outer peripheral surface of the second joint member 22 inserted into the second joint member 22 so that the second joint member is connected to the first joint member so as not to come out.
• Sleeve 78 is the second cylindrical part It is prevented from coming off by a stop ring 90 provided at the end of the material 80, and is urged to be engaged with the stop ring 90 by a spring 92. In this position, the locking member 88 has a radius.
• the sleeve 78 is displaced to the left against the spring 92 so that the locking member opening concave surface 95 formed on the inner peripheral surface of the right end of the sleeve 78 is aligned with the locking member 88.
• the locking member 88 can be displaced radially outward.
• the valve support member 74 has a conical portion 74-1, a cylindrical portion 74-2, and a flange portion 74-3 formed at the tip end of the cylindrical portion. — 2 is provided with a through hole 74 — 4, and the flange portion is sandwiched and fixed between the first and second cylindrical members 70, 80.
• the valve support member 74 is provided with a valve housing recess 97 for housing the valve member 76 opened so as to face the valve seat 102 formed in the second cylindrical member 80.
• the valve member 76 includes a main valve portion (first valve portion) 98 and a pilot valve portion (second valve portion) 94.
• the main valve portion 98 is displaceable in the left-right direction (the axial direction of the first cylindrical member) as viewed in FIG. 1, and a through hole 96 penetrating in the axial direction is provided at the center.
• the main valve portion 98 is provided with an O-ring 100 on the front surface thereof, can be engaged with the valve seat 102 of the second cylindrical member 80, and opens and closes the fluid passage of the first joint member 21. It is like that.
• the pilot valve section 94 is energized by a coil spring 93 provided in the valve housing recess, and closes the through hole 96 of the main valve section 98.
• a valve pushing member 104 is provided between the pilot valve portion 94 and an O-ring 106 provided on the inner peripheral surface of the second cylindrical member.
• the valve pushing member 104 is driven to the left in FIG. 2 as the second joint member 22 is inserted into the first joint member 21, and moves the pilot valve portion 94 to open the through hole 96. Yes.
• the valve pushing member 104 includes a hub portion 104-1 that engages with the pilot valve portion 94, and a plurality of spoke portions 104-2 that extend radially outward from the hub portion.
• FIG. 1 shows the first joint member 21 in which the second joint member 22 is not inserted.
• the pilot valve portion 94 is urged by the coil spring 93, and the through hole 96 is closed.
• Pressurized fluid in the fluid passage 72 of the hand member 21 has a minute gap between the peripheral surface of the valve housing recess 97 of the valve support member 74 and the peripheral surface of the main valve portion 98 (the first valve portion sliding surface).
• G the back pressure chamber 97-1 formed between the main valve 98 and the inner wall surface of the valve housing recess 97 is filled.
• the sleeve 78 is displaced leftward so that the locking member opening concave surface 95 is aligned with the locking member 88 in the radial direction.
• the pilot valve portion 94 is positioned to close the through hole 96 of the main valve portion 98 by the coil panel 93. I will be back.
• the pipe joint 1 according to this embodiment has the same basic configuration as that of the pipe joint according to the first embodiment.
• the pipe joint 1 has a first joint member 10 as a female member and a second joint member 22 as a male member inserted and connected to the female member.
• the first joint member 10 has a pipe (not shown) such as a hose in the air pipe connected to the end.
• the first tubular member 11 is provided, and the second tubular member 20 is connected to the other end of the first tubular member 11 with the sleeve 18 fitted.
• the first tubular member 11 includes a fluid passage 12, a valve support member 14 disposed in the center of the fluid passage 12, and a valve member 16 provided in the valve support member 14.
• the valve support member 14 has an outer cylindrical portion 14-1 and an inner cylindrical portion 14-2 arranged concentrically, and a flow between them is provided. Road 15 is formed.
• the outer cylindrical portion 14-1 and the inner cylindrical portion 14-2 are connected by a connecting portion 14 3 extending substantially perpendicularly to the diameter in FIG. 5d.
• the inner cylindrical portion 142 has a valve storage recess 26, one end (the left end in Fig. 4) of the valve storage recess 26 is closed, and the other end (the right end in Fig. 4) is open. Further, as shown in FIG. 4, the valve storage recess 26 is configured to slidably store the first valve section storage section 26-1, which stores the first valve section of the valve member, and the second valve section. It has a two-valve compartment 26-2. A pair of annular grooves 48 are formed on the outer peripheral surface of the outer cylindrical portion 14-1, and an O-ring 28 is fitted into the outer cylindrical portion 14-1, and the O-ring is formed in the first cylindrical member 11 and the second cylindrical member 20. It is adapted to be sealingly engaged with the peripheral surface. In addition, the inner surface of the inner cylindrical portion 142 has three steps that increase in outer diameter by directing in the fluid traveling direction (right direction in FIG. 4).
• a pin housing hole 49 having an elliptical cross section passes through in the length direction of the connecting portion 14-3, and the operation pin 50 is passed through the pin housing hole 49.
• the operation pin 50 has guide grooves (cam contour portions) of the operation ring 52 with both ends attached to the outer periphery of the first cylindrical member 11. ) Inserted in 54.
• the guide groove 54 has an angle ⁇ with respect to the circumferential direction, and the operation pin 50 is displaced in the axial direction perpendicular to the circumferential direction according to the rotation of the operation ring 52. It is made to be done.
• the operation ring 52 is fixed by a stop ring 56 so as not to come out of the first cylindrical member 11.
• the valve member 16 attached to the valve support member 14 includes a main valve portion (first valve portion) 36 having a through hole 34 provided in the center in the radial direction, and a cylindrical pilot valve portion (second valve portion). ) And are provided so as to be displaceable in the axial direction of the valve support member 14 in the valve housing recess.
• the main valve portion 36 has an O-ring 44 on its annular end surface (front surface), and the O-ring 44 is engaged with a valve seat 46 formed on the second tubular member 20. It is possible.
• the pilot valve section 32 includes an axial hole 320, a diametric hole 322 provided at one end of the hole 320 in the diametric direction, and the pilot valve section 32. And an annular groove 324 provided so as to communicate with the diametrical hole 322 on the outer peripheral surface thereof.
• the pilot valve portion 32 is inserted into the valve support member 14 while being sealed by a pair of O-rings 39. In this state, the pilot valve portion 32 is moved in the fluid downstream direction (by a coil spring 38 disposed in the valve housing recess 26). It is energized to the right).
• the pilot valve portion 32 is coupled to the main valve portion via a spherical engagement member 40 held by the main valve portion 36.
• the engagement member 40 is formed on the outer peripheral surface of the pilot valve portion.
• the main valve portion 36 and the pilot valve portion 32 can be moved relatively slightly in the axial direction.
• the pilot valve portion 32 has a semicircular cross-sectional groove 33 that engages with the operation pin 50, extending in a tangential direction of the circular cross section of the pilot valve portion. It is provided as follows.
• an annular recess 326 is formed at the front end portion of the pilot valve portion 32 that engages with the main valve portion 36, and the annular recess is connected to the main valve portion 36 through a communication passage 37 formed in the main valve portion 36. It communicates with the valve housing recess 26 behind the valve portion 36.
• an O-ring 35 is provided on the inner facing surface of the main valve portion 36 facing the front end of the pie-mouth valve portion 32! /.
• the second tubular member 20 has a locking member 60 engaged with the locking recess 62 of the second joint member 22, and presses the locking member 60 against the locking recess.
• a sleeve 18 for releasing the Z-pressing, and a spring 66 for urging the sleeve 18 to be pressed to the position shown in FIG. 4 are provided.
• An O-ring 68 is provided on the inner surface of the second cylindrical member 20 to seal the male member inserted and connected to the female member.
• FIG. 4 shows a state in which the male member is connected to the female member. Yes.
• the pressurized fluid for example, air
• the valve support member 14 and the main body.
• 1st valve part storage part 26-1 (hereinafter simply referred to as back pressure chamber 26-1) acting as a back pressure chamber on the back side of the main valve part 36 through a small gap G between the valve parts 36 Filled with!
• the space between the pilot valve portion 32 and the inner wall surface of the valve storage recess 26 is sealed with an O-ring 39, and the pressurized fluid force pin storage hole 49 filled in the back pressure chamber 26-1 is exposed to the outside. There is no leakage. Further, the axial hole 320 and the radial hole 322 provided in the pilot valve portion 32 communicate the fluid passage 24 of the second joint member 22 to the outside of the pipe joint through the pin housing hole 49. .
• the operation ring 52 is rotated to retract the operation pin 50 from the position shown in FIG. 4 to the position shown in FIG.
• the pilot valve portion 32 engaged with the operation pin 50 is also powered.
• the main valve section 36 is initially set. Therefore, the pilot valve portion 32 moves relative to the main valve portion 36, and the through hole 34 communicates with the back pressure chamber 26-1 behind the main valve portion 36.
• the diametrical hole 322 of the pilot valve part 32 is aligned with the O-ring 39 on the left side as shown in FIG. That is, the fluid passage 24 of the second joint member 22 is also blocked from external force.
• the valve housing recess has a sliding surface on which the peripheral surface of the main valve portion that is displaceable in the axial direction of the tubular member with respect to the valve seat slides. Force that allows the pressurized fluid in the fluid passage to enter the back pressure chamber through a gap G formed between the moving surface and the peripheral surface of the main valve portion.
• the inflow can be performed by providing a small hole for communicating the fluid passage and the back pressure chamber in the valve support regardless of the gap.
• a diaphragm connected to the inner peripheral surface of the valve housing recess and the first valve portion to close the gap G is provided to block the flow of pressurized fluid into the back pressure chamber through the gap,
• the small hole can be provided so that the pressurized fluid can flow in by the small hole force.
• the pilot valve portion (second valve portion) is positioned on the back side of the female joint member with respect to the main valve (first valve portion), but on the opposite side (that is, It is also possible to provide it on the side where the male member is inserted.

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• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Quick-Acting Or Multi-Walled Pipe Joints (AREA)
• Safety Valves (AREA)
• Lift Valve (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=38563308

Family Applications (1)

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Cited By (1)

Families Citing this family (6)

Citations (4)

Family Cites Families (4)

• 2006
  • 2006-03-31 JP JP2006100522A patent/JP4653688B2/ja active Active
• 2007
  • 2007-03-20 WO PCT/JP2007/055601 patent/WO2007114039A1/ja active Application Filing
  • 2007-03-20 CN CN2007800085737A patent/CN101400938B/zh active Active
  • 2007-03-20 MY MYPI20083883A patent/MY166202A/en unknown
  • 2007-03-20 KR KR1020087022297A patent/KR101033438B1/ko active IP Right Grant
  • 2007-03-21 TW TW096109785A patent/TWI325478B/zh active

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