CN103133806B - Pipe connector cam handle with safety device - Google Patents
Pipe connector cam handle with safety device Download PDFInfo
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- CN103133806B CN103133806B CN201110399656.1A CN201110399656A CN103133806B CN 103133806 B CN103133806 B CN 103133806B CN 201110399656 A CN201110399656 A CN 201110399656A CN 103133806 B CN103133806 B CN 103133806B
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- cam
- handle
- pipe joint
- fool proof
- tool according
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- 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
- F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
- F16L37/12—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members using hooks, pawls or other movable or insertable locking members
- F16L37/18—Joints tightened by eccentrics or rotatable cams
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
Provided is a pipe connector cam handle with a safety device. The pipe connector cam handle is mainly arranged on a pipe connector which is provided with a pipe connector body and an inner connecting pipe which is connected in the pipe connector body in a sleeved mode. The cam handle is provided with a handle body and the safety device. The handle body is provided with a cam part. The safety device at least comprises a cam clamp plate which is movably arranged on the cam part. At least one blocking part which can block and locate the inner connecting pipe is arranged on the periphery of the cam clamp plate in a convex mode. When the cam handle is in a semi-open state, the blocking part can still clamp the inner connecting pipe to avoid separation of the inner connecting pipe. When the cam handle is in a fully-open state, the blocking part can be separated from the inner connecting pipe and form an open lock, and accordingly safe using effect is achieved.
Description
Technical field
The present invention relates to a kind of pipe joint, particularly relates to a kind of easy for operation, and the opening action of pipe joint can be allowed to have more the fool proof pipe joint cam handle of tool of safe handling effect.
Background technique
See Fig. 1, general pipe joint has a joint body 1 usually, one is socketed in the inner connecting tube 2 in joint body 1, and the leak-proof gasket 3 that is set in joint body 1 inside, this joint body 1 both sides external limit place is provided with two ear seats 101, inside each ear seat 101, place is provided with a flange 102, this flange 102 is equipped with a positioning hole 103, this inner connecting tube 2 one end can be inserted in joint body 1, its periphery is to the position of ear seat 101 being arranged with an annular groove 201, this joint body 1 axle on two ear seats 101 is provided with two cam handles 10, general cam handle 10 has a handle 11, the one buckle part 12 being set in handle 11 inside, one is set in handle 11 inside can make butted elastic element 13 to buckle part 12, and the draw ring 14 that is connected in buckle part 12 outer end place, this handle 11 one end place is provided with a cam part 111, this cam part 111 is coupling on ear seat 101 by wearing a pivot pin 112, axis of rotation makes cam handle 10 with pivot pin 112 for can turn to lift shape, this buckle part 12 one end is provided with a beveled end 121, under general state, this beveled end 121 can snap in the positioning hole 103 of joint body 1 along the flange 102 of butt junction body 1, handle 11 is made to be positioned on a locked position of coupler, now the cam part 111 of handle 11 can make compressing blocking shape to the annular groove 201 of inner connecting tube 2, inner connecting tube 2 can engage with joint body 1 rapidly whereby, when user wants to allow inner connecting tube 2 depart from joint body 1, as long as pull this draw ring 14 to drive this buckle part 12, make to depart from the self-align hole 103 of beveled end 121, whole handle 11 just can upwards switching to completely lockset position of coupler, when making annular groove 201 blocking of the cam part 111 of handle 11 no longer to inner connecting tube 2, leak-proof gasket 3 just can be made to depart from the situation of extruding completely, inner connecting tube 2 just can depart from completely in joint body 1 whereby.
Although above-mentioned pipe joint can reach the function of general sealed adapter, but but have its disappearance to need improvement badly in use, high-pressure liquid has been carried usually in general pipe joint inside, when user is not knowing whether to have residual pressure in deferent or because of artificial carelessness, when having forgotten closing valve, just rashly open this cam handle 10 completely, under the impulse force that high-pressure liquid is powerful, high-pressure spray is known from experience by outwards ejection in pipe, when more serious, inner connecting tube 2 is probably unexpected goes out disengaging in joint body 1, befouling environment, if get to user's health, great damage can be produced, use and quite there is danger.
Summary of the invention
The object of the invention, in the middle of the process providing pipe joint to open cam handle, can prevent the fool proof pipe joint cam handle of a kind of tool that the quick-fried punching of inner connecting tube departs from.
The invention provides the fool proof pipe joint cam handle of a kind of tool, mainly be installed on a pipe joint, this pipe joint has a pipe joint body and and is set in the intrinsic inner connecting tube of pipe joint, this cam handle includes leader's body, this handle body one end is provided with a cam part, it is characterized in that: a safety installations, at least there is a cam clamp, this cam clamp is movably arranged in cam part, its periphery is at least convexly equipped with one and stretches into pipe joint body interior can do block location stopper part to inner connecting tube, this safety installations includes a rotating shaft part, this rotating shaft part passes this cam part and is articulated on pipe joint body, be be provided with a bounding means indirectly in this cam part and cam clamp, this handle body of switching can make cam part band draw this bounding means, ordering about the revolution of cam clamp by bounding means drives this stopper part and inner connecting tube in departing from shape.
The fool proof pipe joint cam handle of tool of the present invention, this cam clamp is the side position being arranged on handle body cam part.
The fool proof pipe joint cam handle of tool of the present invention, this safety installations has two cam clamps, and two cam clamps are separately positioned on the dual-side position of handle body cam part.
The fool proof pipe joint cam handle of tool of the present invention, this handle body cam part is arranged with a groove arranged for cam clamp at intermediate portion place.
The fool proof pipe joint cam handle of tool of the present invention, this handle body is provided with a location indentations for cam clamp periphery contact location close to cam part position.
The fool proof pipe joint cam handle of tool of the present invention, this cam clamp inside is equipped with a circular shaft bore penetrated for rotating shaft part.
The fool proof pipe joint cam handle of tool of the present invention, this cam clamp inside offers an elongate slot passed through for rotating shaft part.
The fool proof pipe joint cam handle of tool of the present invention, this cam clamp periphery and stopper part adjacent position are also provided with one and make to inner connecting tube the second gear stop that block locates.
The fool proof pipe joint cam handle of tool of the present invention, this bounding means is connected in handle body cam part, relatively this cam clamp offers a guide groove be stretched through for bounding means.
The fool proof pipe joint cam handle of tool of the present invention, this bounding means is connected on cam clamp, relatively this handle body cam part offers a guide groove be stretched through for bounding means.
The fool proof pipe joint cam handle of tool of the present invention, this bounding means is single axostylus axostyle.
The fool proof pipe joint cam handle of tool of the present invention, this bounding means is the axostylus axostyle of two intended distances of being separated by.
The fool proof pipe joint cam handle of tool of the present invention, this bounding means is a projection with predetermined profile.
The fool proof pipe joint cam handle of tool of the present invention, this handle body is provided with a draw ring in contrast to a side place of cam part.
The fool proof pipe joint cam handle of tool of the present invention, this handle body inside is equiped with one group of clip unit, this clip unit have one to pipe joint body do clip location holding piece and one be arranged on the spring in receiving bore, holding piece being done to butted reply.
The fool proof pipe joint cam handle of tool of the present invention, this handle body dual-side place is provided with two crashproof walls, a receiving groove is formed in the middle of two crashproof walls, this receiving groove is for installing one group of lever unit, this lever unit has a lever be arranged in receiving groove, this lever one end is provided with an axle pivot end be coupling with handle body, and the other end is provided with a free end pulled for hand, and this axle pivot end is provided with a linkage part matched with this holding piece.
The fool proof pipe joint cam handle of tool of the present invention, this handle body is positioned at receiving groove inwall place and is provided with a circular arc concave surface, and this lever axle pivot end outside is provided with an arc convex surface matched with handle body circular arc concave surface relatively.
The fool proof pipe joint cam handle of tool of the present invention, this handle body place above receiving groove inwall is provided with a stopping surface, and this lever is provided with one to the casting lug thereon of stopping surface work by gear in axle pivot end outside relatively.
The fool proof pipe joint cam handle of tool of the present invention, this lever unit has elastic component and the pivot pin be located on lever axle pivot end that is arranged on handle body and lever centre, this elastic component one end connects with handle body and is, another end connects with lever and is.
The fool proof pipe joint cam handle of tool of the present invention, this handle body is equipped with an axis hole on crashproof wall, and this axis hole penetrates for pivot pin and does pivot joint with lever, and this elastic component is torsion spring, be set on pivot pin, its two ends are done butted to handle body and lever respectively.
The fool proof pipe joint cam handle of tool of the present invention, this elastic component one end is provided with a L-type end, and this lever external concave is provided with a L shape groove be inserted in for L-type end relatively.
The fool proof pipe joint cam handle of tool of the present invention, this elastic component one end is provided with a uprightly end, and this pivot pin one end is provided with a confession and uprightly holds and stretch into and can set the driver slot of elastic component spring-go power size relatively.
The fool proof pipe joint cam handle of tool of the present invention, this pivot pin one end is provided with a press-in handle body shaft hole inner wall and forms fixing embossed section.
Beneficial effect of the present invention is: in handle body, be provided with cam clamp form locking to inner connecting tube, even if cam handle can be made when half opened condition, when fastening has not been compressed to leak-proof gasket, the pressure in pipe or residual pressure is allowed first to do pressure release, cam clamp still can depart to prevent it inner connecting tube blocking, reaches the effect of safe handling whereby.
Accompanying drawing explanation
Fig. 1 is the assembled sectional view of general pipe joint;
Fig. 2 is the exploded perspective view of tool of the present invention fool proof pipe joint cam handle first preferred embodiment, illustrates that the present invention includes leader's body, a clip unit, a lever unit and two cam clamps;
Fig. 3 is the exploded perspective view of above preferred embodiment, illustrates and looks situation of the present invention by the sight of another visual angle;
Fig. 4 is the combination stereogram of above preferred embodiment;
Fig. 5 is the exploded perspective view of above preferred embodiment, illustrates that a pipe joint body dual-side place is equipped with the situation of two cam handles;
Fig. 6 is the assembled sectional view of above preferred embodiment, illustrates that clip unit makes the situation of clip locking to pipe joint body;
Fig. 7 is the sectional view of Fig. 6 along VII-VII line, and situation lever unit being equiped with an elastic component is described;
Fig. 8 is the assembled sectional view of above preferred embodiment, illustrates that cam clamp and handle body are articulated on pipe joint body, jointly an inner connecting tube is carried out to the situation of blocking locking;
Fig. 9 is the action diagram of above preferred embodiment, illustrates that pulling lever unit drives clip unit to depart from the situation of pipe joint body;
Figure 10 is the action diagram of above preferred embodiment, and the situation that lever unit upwards pulls open is described;
Figure 11 is the action diagram of above preferred embodiment, illustrates that handle body and inner connecting tube depart from when cam handle has just started to pull open, and the situation of cam clamp still blocking inner connecting tube;
Figure 12 is the action diagram of above preferred embodiment, illustrates after cam handle is opened completely, the situation that handle body and cam clamp all depart from inner connecting tube;
Figure 13 is the exploded perspective view of second preferred embodiment of the invention;
Figure 14 is the combination stereogram of second preferred embodiment of the invention;
Figure 15 is the exploded perspective view of third preferred embodiment of the invention;
Figure 16 is the exploded perspective view of four preferred embodiment of the invention;
Figure 17 is the exploded perspective view of fifth preferred embodiment of the invention;
Figure 18 is the exploded perspective view of sixth preferred embodiment of the invention;
Figure 19 is the exploded perspective view of seventh preferred embodiment of the invention;
Figure 20 is the exploded perspective view of eighth preferred embodiment of the invention;
Figure 21 is the constitutional diagram of above preferred embodiment;
Figure 22 is the assembled sectional view of above preferred embodiment;
Figure 23 is the action diagram of above preferred embodiment;
Figure 24 is the action diagram of above preferred embodiment;
Figure 25 is the action diagram of above preferred embodiment;
Figure 26 is the action diagram of above preferred embodiment;
Figure 27 is the exploded perspective view of ninth preferred embodiment of the invention;
Figure 28 is the exploded perspective view of tenth preferred embodiment of the invention;
Figure 29 is the exploded perspective view of eleventh preferred embodiment of the invention;
Figure 30 is the exploded perspective view of twelveth preferred embodiment of the invention;
Figure 31 is the exploded perspective view of thirteenth preferred embodiment of the invention;
Figure 32 is the exploded perspective view of fourteenth preferred embodiment of the invention;
Figure 33 is the exploded perspective view of fifteenth preferred embodiment of the invention;
Figure 34 is the constitutional diagram of above preferred embodiment;
Figure 35 is the assembled sectional view of above preferred embodiment;
Figure 36 is the action diagram of above preferred embodiment;
Figure 37 is the action diagram of above preferred embodiment;
Figure 38 is the action diagram of above preferred embodiment;
Figure 39 is the action diagram of above preferred embodiment;
Figure 40 is the exploded perspective view of sixteenth preferred embodiment of the invention;
Figure 41 is the constitutional diagram of above preferred embodiment;
Figure 42 is the assembled sectional view of above preferred embodiment;
Figure 43 is the action diagram of above preferred embodiment;
Figure 44 is the action diagram of above preferred embodiment;
Figure 45 is the use schematic diagram of first preferred embodiment of the invention, illustrates that the present invention uses that same group of cam handle is applicable to be arranged on the pipe joint body of different size size;
Figure 46 is the exploded perspective view of seventeenth preferred embodiment of the invention;
Figure 47 is the combination stereogram of above preferred embodiment;
Figure 48 is the exploded perspective view of eighteenth preferred embodiment of the invention;
Figure 49 is the combination stereogram of above preferred embodiment.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail:
See Fig. 5 and Fig. 8, the fool proof pipe joint cam handle 5 of tool of the present invention in a first preferred embodiment, mainly be installed on a pipe joint, this pipe joint comprises a pipe joint body 100, one inner connecting tube 200 being socketed in pipe joint body 100 inside, and one is set in leak-proof gasket 300 in pipe joint body 100, the outside side edge of this pipe joint body 100 is provided with a pivot joint ear 101, pivot joint ear 101 has a flange 102, flange 102 is equipped with a positioning hole 103, this inner connecting tube 200 periphery is arranged with an annular groove 201, see Fig. 2 to Fig. 4, cam handle 5 of the present invention consists predominantly of leader's body 20, one clip unit 30, one lever unit 40 and a safety installations 50, then, after again the element of above-mentioned each unit and Spatial Coupling kenel being specified in.
Handle body 20 one end is provided with one and makes the cam part 21 of pivot joint with pipe joint body 100 pivot joint ear 101, the inner side place of the other end is provided with a lip part 22, dual-side place is provided with two crashproof walls 23, a receiving bore 24 is equipped with in lip part 22, this receiving bore 24 can load for clip unit 30, two crashproof wall 23 intermediate hollow are formed with one and thoroughly pass to receiving groove 25 in receiving bore 24, this receiving groove 25 can be installed for this lever unit 40 and insert, the effect of crashproof wall 23 is mainly used for preventing this lever unit 40 to be subject to the shock from side and produces bending or distortion, avoid the Security or the usability that have influence on product, in addition, handle body 20 is positioned at receiving groove 25 inwall both sides place and is respectively provided with a circular arc concave surface 26, this handle body 20 is located more to be provided with a stopping surface 27 above receiving groove 25 inwall, and crashproof wall 23 is equipped with one and thoroughly passes to axis hole 28 in receiving groove 25.
Simultaneously see Fig. 6, this clip unit 30 includes a holding piece 31, one spring 32 and a seal ring 33, it is sequentially enclosed in the receiving bore 24 of handle body 20, this holding piece 31 one end place is provided with a pointed cone portion 311, holding piece 31 periphery is provided with a groove 312, this seal ring 33 riveting is fixed in receiving bore 24, spring 32 one end is supported only in seal ring 33, another end can be done butted to holding piece 31, when lever unit 40 is pressed down, holding piece 31 is because be subject to the butted of spring 32, pointed cone portion 311 slides along with the flange 102 of pipe joint 100 pivot joint ear 101, and then clip location is done to the positioning hole 103 of pipe joint body 100.
Simultaneously see Fig. 2, Fig. 6 and Fig. 7, this lever unit 40 has a lever 41, one elastic component 42 and a pivot pin 43, this lever 41 one end is provided with an axle pivot end 411, the other end is provided with one and pulls for user's hand the free end 412 drawn, this lever 41 is arranged in the receiving groove 25 of handle body 20, the protection of the crashproof wall 23 of dual-side can be subject to, axis hole 28 position of the corresponding handle body 20 of this axle pivot end 411 is equipped with a mesopore 413, this mesopore 413 inside can load for pivot pin 43, handle body 20 and lever 41 is made to be made pivot joint shape, lever 41 is arranged with a L-type groove 414 at mesopore 413 outer side surface place, this axle pivot end 411 outside is more provided with an arc convex surface 415, this arc convex surface 415 cooperatively interacts with the circular arc concave surface 26 of handle body 20, when this kind of cooperating structure provides lever 41 to rotate, there is firm cornering rate smoothly, lever 41 is more extended with a linkage part 416 by axle pivot end 411 outside, this linkage part 416 stretches in the receiving bore 24 of handle body 20, just match with the groove 312 of holding piece 31, when after lever 41 switching, just this holding piece 31 can be driven to do telescopic moving, this axle pivot end 411 outside is provided with a casting lug thereon 417 in the position mutually adjoining with arc convex surface 415, when lever 41 switching is to several angle, this casting lug thereon 417 can be formed by gear and conflict and restriction site on handle body 20 stopping surface 27, linkage part 416 is prevented to be out of shape because of the power upwards pulled, favourable whereby this lever 41 that allows can drive whole handle body 20 upwards to pull smoothly.
This elastic component 42 one end to connect by pivot pin 43 with handle body 20, another end connects with lever 41, the spring-go power that lever 41 has pre-sizing is provided, in the present embodiment, this elastic component 42 is a kind of torsion spring, it is set on pivot pin 43, can group enter in the mesopore 413 of lever 41, this elastic component 42 one end is provided with a L-type end 421, L-type end 421 is just linked in the L-type groove 414 of lever 41, this end of elastic component 42 is connected with lever 41 be, elastic component 42 the other end is provided with one and uprightly holds 422, this uprightly holds 422 to plug together on pivot pin 43, by pivot pin 43, this end of elastic component 42 is connected with handle body 20 be, a this pivot pin 43 wherein end-grain cutting is provided with a driver slot 431, this driver slot 431 can enter for upright end 422 sleeve of elastic component 42, and an instrument (such as: bottle opener) can be supplied to do slotting turning, pivot pin 43 is more provided with embossed section 433 and a locating flange 432 in the periphery of the other end, dealer is when assembling, first the embossed section 433 of pivot pin 43 and locating flange 432 is allowed to expose outside handle body 20 axis hole 28, the other end driver slot 431 is inserted with instrument, and pivot pin 43 is turned, preset the spring-go power that this elastic component 42 produces a certain size, after treating the elastic force setting of elastic component 42, whole pivot pin 43 is pressed in axis hole 28 by assembler again, embossed section 433 is made to embed handle body 20 axis hole 28 inwall, the locating flange 432 on pivot pin 43 is utilized to contact shelves with handle body 20 only, whole whereby pivot pin 43 is just shut to be fixed in handle body 20, lever 41 is made to be subject to elastic component 42 butted and have the elastic force returning back to original position.
Again see Fig. 2, Fig. 5 and Fig. 8, this safety installations 50 includes two cam clamps 51, one rotating shaft part 52 and a bounding means 53, two cam clamps 51 are symmetricly set on handle body 20 cam part 21 dual-side place, each cam clamp 51 periphery is provided with the stopper part 511 that is standing shape, this stopper part 511 is stretched in pipe joint body 100, under general blocking, the cam part 21 of handle body 20 and the stopper part 511 of cam clamp 51 are fastened in the annular groove 201 of inner connecting tube 200, inner connecting tube 200 can be fixed in pipe joint body 100 whereby, this handle body 20 outer side is provided with a location indentations 211 close to cam part 21 position, this location indentations 211 can for cam clamp 51 periphery block location, so as to limiting the amplitude that this cam clamp 51 rotates, this cam clamp 51 and handle body 20 cam part 21 all bias are equipped with an axis hole 512, 212, this axis hole 512 can wear for this rotating shaft part 52, this rotating shaft part 52 simultaneously tip connects cam clamp 51 and handle body 20 cam part 21 in the pivot joint ear 101 of pipe joint body 100, handle body 20 cam part 21 is provided with a pin-and-hole 213 at contiguous axis hole 212 place, this pin-and-hole 213 can wear for bounding means 53, this bounding means 53 is axostylus axostyles, cam clamp 51 offers a microscler guide groove 513 that can penetrate for bounding means 53, this bounding means 53 arrives to microscler guide groove 513 inwall, whereby when handle body 20 is in upper and lower switching, bounding means 53 can order about cam clamp 51 with rotating shaft part 52 for making rotary displacement in axle center.
Be more than the general introduction of each Components Shape of the fool proof pipe joint cam handle of tool of the present invention, then, then effect statement action of the present invention and expection can reached is as rear:
Again see Fig. 8, when user will allow inner connecting tube 200 interlocking on pipe joint body 100, first, inner connecting tube 200 is allowed to be inserted in pipe joint body 100, user is with a hand down repoussage cam handle 5, the cam part 21 of handle body 20 and the stopper part 511 of cam clamp 51 can clamp in the annular groove 201 of inner connecting tube 200 simultaneously, this cam part 21 oppresses inner connecting tube 200 to moving down, inner connecting tube 200 pairs of leak-proof gaskets 300 are made to form extruding, reach drip-preventing function whereby, again see Fig. 6, when cam handle 5 is toward when pressing down, holding piece 31 in handle body 20 can slide along the flange 102 of pipe joint body 100, and make the pointed cone portion 311 of holding piece 31 snap in the clip hole 103 of pipe joint body 100, whole cam handle 5 is allowed to be positioned on a locked position of coupler whereby.
See Fig. 9, when user will use the present invention to carry out unlocking action to pipe joint 100, user first pulls with hand and draws this lever 41, because lever 41 is subject to elastic component 42 and spring 32 simultaneously butted, user needs to apply to be greater than elastic component 42 and spring 32 strength simultaneously, begin to allow lever 41 outwards pull, user's psychology so can be allowed to confirm to pull open the carrying out of action, after lever 41 is pulled, just holding piece 31 can be driven to be separated with the clip hole 103 of pipe joint 100, see Figure 10, then, the stopping surface 27 of handle body 20, because be subject to the conflict of lever 41 casting lug thereon 417 and spacing, handle body 20 can be driven by lever 41 and continue up to pull open, whole cam handle 5 so can be allowed to make opening action.
See Figure 11, when cam handle 5 has just started to carry out opening action, the cam part 21 of handle body 20 can form disengaging with the annular groove 201 of inner connecting tube 200, inner connecting tube 200 moves outward because of overpressure, no longer leak-proof gasket 300 is extruded, pressure in all pipes can release in advance from gap, and now the stopper part 511 of cam clamp 51 is still fastened in the annular groove 201 of inner connecting tube 200, and inner connecting tube 200 so can be allowed can not to go out disengaging from pipe joint body 100.
See Figure 12, after cam handle 5 is opened by user completely, handle body 20 can be with moving cam clamp 51 with rotating shaft part 52 for turning round in axle center by bounding means 53, the stopper part 511 of cam clamp 51 is made to be depart from shape with the annular groove 201 of inner connecting tube 200, this inner connecting tube 200, without any obstruction, just can directly spin off by pipe joint body 100.
Safety installations 50 of the present invention can derive and multiplely different arrange kenel, see Figure 13, Figure 14, second preferred embodiment of the invention has leader's body 20 (I) and two cam clamps 51 (I), two cam clamps 51 (I) are upper respectively one-body moldedly goes out to have a bounding means 53 (I), the cam part 21 (I) of this handle body 20 (I) relative penetrates and offers a microscler guide groove 22 (I), can penetrate for the bounding means 53 (I) on two cam clamps 51 (I).
See Figure 15, third preferred embodiment of the invention has leader's body 20 (II) and two cam clamps 51 (II), two cam clamps 51 (II) are respectively equipped with an axis hole 511 (II), the cam part 21 (II) of this handle body 20 (II) relative offers a microscler guide groove 22 (II), this bounding means 53 (II) is a latch, can penetrate in axis hole 511 (II) and microscler guide groove 22 (II).
See Figure 16, four preferred embodiment of the invention has leader's body 20 (III) and two cam clamps 51 (III), two cam clamps 51 (III) respectively offer a microscler guide groove 511 (III), this handle body 20 (III) cam part 21 (III) dual-side is one-body molded relatively goes out to have two bounding means 53 (III), two bounding meanss 53 (III) can penetrate respectively in the microscler guide groove 511 (III) of cam clamp 51 (III).
See Figure 17, fifth preferred embodiment of the invention has leader's body 20 (IV) and a cam clamp 51 (IV), cam clamp 51 (IV) is equipped with an axis hole 511 (IV), relatively this handle body 20 (IV) cam part 21 (IV) offers a microscler guide groove 22 (IV), this bounding means 53 (IV) is a latch, can penetrate in axis hole 511 (IV) and microscler guide groove 22 (IV).
See Figure 18, sixth preferred embodiment of the invention has leader's body 20 (V) and a cam clamp 51 (V), cam clamp 51 (V) is above one-body molded goes out to have a bounding means 53 (V), the cam part 21 (V) of this handle body 20 (V) relative offers a microscler guide groove 22 (V), and the bounding means 53 (V) on cam clamp 51 (V) can penetrate in microscler guide groove 22 (V).
See Figure 19, seventh preferred embodiment of the invention has leader's body 20 (VI) and a cam clamp 51 (VI), cam clamp 51 (VI) offers a microscler guide groove 511 (VI), the cam part 21 (VI) of this handle body 20 (VI) is above one-body molded relatively goes out to have a bounding means 53 (VI), and this bounding means 53 (VI) can penetrate in microscler guide groove 511 (VI).
Cam handle of the present invention is in response to difform inner connecting tube, different change kenels can be made, see Figure 20 to Figure 22, the present invention is in the 8th preferred embodiment, this pipe joint body 100 internal sleeve is provided with another inner connecting tube 200 ', this inner connecting tube 200 ' end periphery is provided with the block edge 201 ' that is upside down t-shape, pipe joint body 100 both sides place is pivoted with two cam handles 6, each cam handle 6 all includes leader's body 60 and a safety installations 70, this handle body 60 one end is provided with a cam part 61, this cam part 61 is articulated on pipe joint body 100, but can't be formed with inner connecting tube 200 ' and contact, cam part 61 is equipped with an axis hole 611 and the guide groove 612 of a summary in triangular shape, this safety installations 70 comprises two cam clamps 71, two cam clamps 71 are arranged on cam part 61 dual-side place symmetrically, its periphery is convexly equipped with one can do block location stopper part 711 to inner connecting tube 200 ' block edge 201 ', the position of this stopper part 711 of neighbour is more provided with a second gear stop 712, the position of cam clamp 71 corresponding cam part 61 axis hole 611 is provided with an elongate slot 713, one rotating shaft part 72 to penetrate in axis hole 611 and elongate slot 713 and is articulated on pipe joint body 100, the position of corresponding cam part 61 guide groove 612 in cam clamp 71 side is one-body molded goes out to have a bounding means 73, this bounding means 73 is one-body molded microscler projections on cam clamp 71, can be inserted in the guide groove 612 of cam part 61, make whole cam clamp 71 can do limited activity in cam part 61.
See Figure 23, Figure 24, when user just started will to cam handle 6 pull draw time, cam clamp 71 draws bounding means 73 by guide groove 612 band of cam part 61, two cam clamps 71 are moved toward pipe joint body about 100 lateral direction, stopper part 711 on cam clamp 71 departs from the block edge 201 ' of inner connecting tube 200 ', see Figure 25, because inner connecting tube 200 ' is subject to internal pressure impact, whole meeting goes out movement above pipe joint body 100, now and then the second gear stop 712 of cam clamp 71 can do block location to the block edge 201 ' of inner connecting tube 200 ', can prevent the quick-fried punching of inner connecting tube 200 ' from departing from whereby.
See Figure 26, when person to be used confirms to carry out unlocking action, by cam handle 6 upwards switching open completely, now the second gear stop 712 of cam clamp 71 is separated with the block edge 201 ' of inner connecting tube 200 ', inner connecting tube 200 ' is not subject to any object to be stopped, just can detach out in pipe joint body 100.
The present invention can produce multiple difference change kenel according to above-described embodiment, see Figure 27, ninth preferred embodiment of the invention has leader's body 60 (I) and cam clamps 71 (I), this handle body 60 (I) one end is provided with a cam part 61 (I), cam part 61 (I) is above one-body molded goes out to have a bounding means 73 (I), this bounding means 73 (I) is the axostylus axostyle of two intended distances of being separated by, this cam clamp 71 (I) is arranged on a side of cam part 61 (I), its inside is arranged with the guide groove 714 (I) that is triangular shape, this guide groove 714 (I) can be inserted in for bounding means 73 (I).
See Figure 28, tenth preferred embodiment of the invention has leader's body 60 (II), one cam clamp 71 (II) and a bounding means 73 (II), this handle body 60 (II) one end is provided with a cam part 61 (II), cam part 61 (II) is equipped with the guide groove 612 (II) that is triangular shape, cam clamp 71 (II) is equipped with two pin-and-holes 714 (II), this bounding means 73 (II) is two latches, after penetrating in cam part 61 (II) guide groove 612 (II), the tip connects and is fixed in cam clamp 71 (II) two pin-and-hole 714 (II) again.
See Figure 29, eleventh preferred embodiment of the invention has leader's body 60 (III) and cam clamps 71 (III), handle body 60 (III) one end is provided with a cam part 61 (III), this cam part 61 (III) is above one-body molded goes out to have a bounding means 73 (III), this bounding means 73 (III) is the projection in microscler shape, cam clamp 71 (III) offers the guide groove 714 (III) that is triangular shape, this guide groove 714 (III) can be inserted in for bounding means 73 (III).
See Figure 30, twelveth preferred embodiment of the invention has leader's body 60 (IV) and two cam clamps 71 (IV), handle body 60 (IV) one end is provided with a cam part 61 (IV), cam part 61 (IV) dual-side is each one-body moldedly goes out to have a bounding means 73 (IV), each bounding means 73 (IV) is two axostylus axostyles being connected in cam part 61 (IV), two cam clamps 71 (IV) are arranged on cam part 61 (IV) dual-side place symmetrically, each cam clamp 71 (IV) is all equipped with the guide groove 714 (IV) that is triangular shape, this guide groove 714 (IV) can be inserted in for bounding means 73 (IV).
See Figure 31, thirteenth preferred embodiment of the invention has leader's body 60 (V), two cam clamp 71 (V) and bounding meanss 73 (V), handle body 60 (V) one end is provided with a cam part 61 (V), cam part 61 (V) offers the guide groove 612 (V) that is triangular shape, two cam clamps 71 (V) are symmetricly set on cam part 61 (V) dual-side place, each cam clamp 71 (V) is all equipped with two pin-and-holes 714 (V), this bounding means 73 (V) is two latches, after being penetrated by the pin-and-hole 714 (V) of one side cam clamp 71 (V), be stretched through the guide groove 612 (V) in cam part 61 (V), finally doing the tip with cam clamp 71 (V) pin-and-hole 714 (V) of another side again connects fixing.
See Figure 32, fourteenth preferred embodiment of the invention has leader's body 60 (VI) and two cam clamps 71 (VI), handle body 60 (VI) one end is provided with a cam part 61 (VI), cam part 61 (VI) dual-side is respectively provided with a bounding means 73 (VI), this bounding means 73 (VI) is integrally connected to the long shaped bump in cam part 61 (VI), two cam clamps 71 (VI) are symmetricly set on cam part 61 (VI) dual-side place, each cam clamp 71 (VI) all offers the guide groove 714 (VI) of a shape triangular in shape, this guide groove 714 (VI) can be inserted in for bounding means 73 (VI).
Cam handle of the present invention also has other different embodiment's change, see Figure 33 to Figure 35, the cam handle 7 of fifteenth preferred embodiment of the invention has leader's body 80 and a safety installations 90, this safety installations 90 includes a cam clamp 91, one rotating shaft part 92 and a bounding means 93, handle body 80 one end is provided with a cam part 81, this cam part 81 is cut at intermediate portion place and is provided with a groove 811, this groove 811 just can be inserted in setting for cam clamp 91, cam part 81 is equipped with an axis hole 812, cam clamp 91 is to offering an elongate slot 911 in axis hole 812 position, after rotating shaft part 92 is penetrated by cam part 81 axis hole 812, be stretched through the elongate slot 911 of cam clamp 91 again, and be articulated on pipe joint body 100, cam part 81 offers the guide groove 813 of a shape triangular in shape, this cam clamp 91 is equipped with two pin-and-holes 912, this bounding means 93 is two latches, after bounding means 93 can be penetrated by the guide groove 813 of cam part 81, the pin-and-hole 912 of cam clamp 91 is crossed in break-through again, cam clamp 91 periphery is provided with stopper part 913 and a second gear stop 914, block location can be done to the block edge 201 ' of inner connecting tube 200 ' in this stopper part 913, allow inner connecting tube 200 ' be fixed in pipe joint body 100 whereby and form blocking.
See Figure 36 to Figure 38, when user has just started to open cam handle 7, cam clamp 91 is subject to the restriction of rotating shaft part 92 and bounding means 93 respectively, cam clamp 91 can be done simultaneously rotate and translation motion, can pull with inner connecting tube 200 ' block edge 201 ' is de-in stopper part 913 on cam clamp 91, now inner connecting tube 200 ' is subject to internal pressure impact and up moves, its block edge 201 ' can be subject to cam clamp 91 second gear stop 914 block again and locate, and can prevent the unexpected quick-fried punching of inner connecting tube 200 ' from departing from whereby.
See Figure 39, when user opens cam handle 7 completely, the second gear stop 914 of cam clamp 91 can be pulled with inner connecting tube 200 ' block edge 201 ' is de-, and now inner connecting tube 200 ' is no longer subject to any stop, and can successfully detach out by pipe joint body 100.
See Figure 40 to Figure 42, the cam handle 8 of sixteenth preferred embodiment of the invention has leader's body 80 (I) and a safety installations 90 (I), this safety installations 90 (I) comprises a cam clamp 91 (I), one rotating shaft part 92 (I) and a bounding means 93 (I), handle body 80 (I), cam clamp 91 (I), rotating shaft part 92 (I) and bounding means 93 (I) similar with a upper embodiment, detailed configuration just repeats no more, unlike, this cam clamp 91 (I) is provided with an axis hole 911 (I) penetrated for rotating shaft part 92 (I), contiguous axis hole 911 (I) position is equipped with an elongate slot 912 (I), this bounding means 93 (I) is microscler projection, just can be inserted in the elongate slot 912 (I) of cam clamp 91 (I), cam clamp 91 (I) is in response to the shape of inner connecting tube 200, its periphery is provided with stopper part 913 (I) and the second gear stop 914 (I) that is arc shape, see Figure 43, when user start to pull draw cam handle time, the stopper part 913 (I) of cam clamp 91 (I) can depart from from the arc-shaped ring groove 201 of inner connecting tube 200, and then second gear stop 914 (I) can do block location to inner connecting tube 200, can prevent the unexpected quick-fried punching of inner connecting tube 200 from departing from whereby, see Figure 44, when user confirms to open cam handle 8 completely, pulling this handle body 80 (I) can be with moving cam clamp 91 (I) to turn round, second gear stop 914 (I) is departed from from the arc-shaped ring groove 201 of inner connecting tube 200, inner connecting tube 200 is no longer subject to any stop, and can successfully detach out by pipe joint body 100.
See Figure 45, bounding means 53 is utilized to reach actuation in the middle of handle body 20 of the present invention and cam clamp 51, and the present invention is provided with microscler guide groove 513 for bounding means 53 and penetrates movement, this purpose of design is to use same group of cam handle, on the applicable pipe joint body 400 being arranged on a different size size, microscler guide groove 513 provides the effect of the fine setting in fit tolerance size.
In sum, the fool proof pipe joint cam handle of tool of the present invention is mainly in order to solve the problem that general pipe joint uses, its technological means adopted at least is provided with a cam clamp 51 in the cam part 21 of handle body 20, see Figure 11, Figure 12, this cam clamp 51 has one can do blocking stopper part 511 to inner connecting tube 200 annular groove 201, when making cam handle just start to open, even if the cam part 21 of handle body 20 departs from inner connecting tube 200 annular groove 201, blocking still can be done to inner connecting tube 200 annular groove 201 in stopper part 511 on cam clamp 51, cam handle like this is under half opened condition, inner connecting tube 200 also can not go out disengaging from pipe joint body 100, reach the effect of safe handling whereby, in addition, see Figure 45, transmission is done by bounding means 53 in the middle of cam clamp 51 and handle body 20, the present invention offers microscler guide groove 513 and is inserted in movably for bounding means 53, the function that microscler guide groove 513 provides fit tolerance size to finely tune, same group of cam handle can be allowed to be suitable for be arranged on the pipe joint body of different size size, so manufacture the cam handle just not needing to develop different size, there is the advantage of saving and manufacturing cost, come again, see Fig. 9, this lever 41 is connected in handle body 20 with articulated manner, interlock is reached with connecting rod mode in the middle of lever 41 and clip unit 30, so when user pulls open this lever 41 laterally, clip unit 30 can be positively driven to complete unlocking action, the structure of lever 41 on operation uses quite easily and convenient, and pressure sores sense can not be caused to human hands, there is splendid using effect, and the present invention is provided with an elastic component 42 in the middle of handle body 20 with lever 41, the torsion spring-go power that elastic component 42 provides lever 41 can produce pre-sizing, when user will carry out unlocking motion to pipe joint 100, pull and draw this lever 41, spring 32 elastic force simultaneously of elastic component 42 and clip unit 30 must be overcome, therefore user will apply just can pull open this lever 41 energetically, so allow user when there being psychological preparation, confirm to unblank to pipe joint 100, the Security used can be guaranteed, when carrying out block action, as long as user is toward pressing down lever 41, holding piece 31 is utilized only to be subject to the butted of spring 32, and the pointed cone portion 311 of holding piece 31 can along the flange 102 of pipe joint 100 pivot joint ear 101, along in the positioning hole 103 sliding into pipe joint 100, so just can reach blocking function easily, in addition, the present invention in an assembling process, rotating this pivot pin 43 can drive elastic component 42 to reverse, the large I of torsion spring-go power of elastic component 42 arbitrarily adjusts setting whereby, allow lever 41 elasticity of a size suitable when pulling, quite convenient in elastic force setting.
It is worth mentioning that, technology of the present invention is also applicable on general cam handle, see Figure 46, Figure 47, the cam handle 500 of seventeenth preferred embodiment of the invention has leader's body 510, two cam clamp 520 and bounding meanss 530, this handle body 510 1 side is provided with a cam part 511, another side is provided with a free end 512, this free end 512 is equipped with a draw ring 513, this draw ring 513 is available for users to hand and pulls and draw, the structure of two cam clamps 520 is substantially identical with the first embodiment, two cam clamps 520 form interlock by bounding means 530 and cam part 511, so this cam handle 500 utilizes the setting of two cam clamps 520, the effect of safe handling can be reached equally.
See Figure 48, Figure 49, the cam handle 600 of eighteenth preferred embodiment of the invention has leader's body 610, one holding piece 620, two cam clamp 630 and bounding meanss 640, this handle body 610 1 side is provided with a cam part 611, another side is provided with a free end 612, be positioned at place inside free end 612 and be provided with a lip part 613, this lip part 613 inside can load for this holding piece 620 springing ground, this holding piece 620 tail end is equipped with a draw ring 621, this draw ring 621 is available for users to hand and pulls and draw, make this holding piece 620 can do upper and lower telescopic moving, the structure of two cam clamps 630 is substantially identical with the first embodiment, two cam clamps 630 form interlock by bounding means 640 and cam part 611, so this cam handle 600 utilizes the setting of two cam clamps 630, the effect of safe handling can be reached equally.
Above the cam clamp structure of various embodiment and mounting technique all applicable on the general cam handle of EN-14420-7 (DIN 2828) and A-A-59326B specification, the above, the just multiple preferred embodiment of the present invention, when not limiting scope of the invention process with this, all simple equivalences done according to the present patent application the scope of the claims and invention description content change and modify, and all still remain within the scope of the patent.
Claims (22)
1. the fool proof pipe joint cam handle of tool, mainly be installed on a pipe joint, this pipe joint there is a pipe joint body and one be set in the intrinsic inner connecting tube of pipe joint, this cam handle includes a handles body, this handle body one end is provided with a cam part, it is characterized in that:
A safety installations, at least there is a cam clamp, this cam clamp is movably arranged in cam part, its periphery is at least convexly equipped with one and stretches into pipe joint body interior does block location stopper part to inner connecting tube, this safety installations includes a rotating shaft part, this rotating shaft part passes this cam part and is articulated on pipe joint body, be be provided with a bounding means indirectly in this cam part and cam clamp, this handle body is provided with a location indentations for cam clamp periphery contact location close to cam part position.
2. the fool proof pipe joint cam handle of tool according to claim 1, is characterized in that: this cam clamp is the side position being arranged on handle body cam part.
3. the fool proof pipe joint cam handle of tool according to claim 1, is characterized in that: this safety installations has two cam clamps, and two cam clamps are separately positioned on the dual-side position of handle body cam part.
4. the fool proof pipe joint cam handle of tool according to claim 1, is characterized in that: this handle body cam part is arranged with a groove arranged for cam clamp at intermediate portion place.
5. the fool proof pipe joint cam handle of tool according to claim 1, is characterized in that: this cam clamp inside is equipped with a circular shaft bore penetrated for rotating shaft part.
6. the fool proof pipe joint cam handle of tool according to claim 1, is characterized in that: this cam clamp inside offers an elongate slot passed through for rotating shaft part.
7. the fool proof pipe joint cam handle of tool according to claim 1, is characterized in that: this cam clamp periphery and stopper part adjacent position are also provided with one and make to inner connecting tube the second gear stop that block locates.
8. the fool proof pipe joint cam handle of tool according to claim 1, is characterized in that: this bounding means is connected in handle body cam part, relatively this cam clamp offers a guide groove be stretched through for bounding means.
9. the fool proof pipe joint cam handle of tool according to claim 1, is characterized in that: this bounding means is connected on cam clamp, relatively this handle body cam part offers a guide groove be stretched through for bounding means.
10. the fool proof pipe joint cam handle of tool according to claim 1, is characterized in that: this bounding means is single axostylus axostyle.
11. fool proof pipe joint cam handles according to claim 1, is characterized in that: this bounding means is the axostylus axostyle of two intended distances of being separated by.
The fool proof pipe joint cam handle of 12. tool according to claim 1, is characterized in that: this bounding means is a projection with predetermined profile.
The fool proof pipe joint cam handle of 13. tool according to claim 1, is characterized in that: this handle body is provided with a draw ring in contrast to a side place of cam part.
The fool proof pipe joint cam handle of 14. tool according to claim 1, it is characterized in that: this handle body inside is equiped with one group of clip unit, this clip unit have one to pipe joint body do clip location holding piece and one be arranged on the spring in receiving bore, holding piece being done to butted reply.
The fool proof pipe joint cam handle of 15. tool according to claim 14, it is characterized in that: this handle body dual-side place is provided with two crashproof walls, a receiving groove is formed in the middle of two crashproof walls, this receiving groove is for installing one group of lever unit, this lever unit has a lever be arranged in receiving groove, this lever one end is provided with an axle pivot end be coupling with handle body, the other end is provided with a free end pulled for hand, and this axle pivot end is provided with a linkage part matched with this holding piece.
The fool proof pipe joint cam handle of 16. tool according to claim 15, it is characterized in that: this handle body is positioned at receiving groove inwall place and is provided with a circular arc concave surface, this lever axle pivot end outside is provided with an arc convex surface matched with handle body circular arc concave surface relatively.
The fool proof pipe joint cam handle of 17. tool according to claim 15, it is characterized in that: this handle body place above receiving groove inwall is provided with a stopping surface, this lever is provided with one to the casting lug thereon of stopping surface work by gear in axle pivot end outside relatively.
The fool proof pipe joint cam handle of 18. tool according to claim 15, it is characterized in that: this lever unit has elastic component and the pivot pin be located on lever axle pivot end that is arranged on handle body and lever centre, this elastic component one end connects with handle body and is, another end connects with lever and is.
The fool proof pipe joint cam handle of 19. tool according to claim 18, it is characterized in that: this handle body is equipped with an axis hole on crashproof wall, this axis hole penetrates for pivot pin and does pivot joint with lever, this elastic component is torsion spring, be set on pivot pin, its two ends are done butted to handle body and lever respectively.
The fool proof pipe joint cam handle of 20. tool according to claim 18, is characterized in that: this elastic component one end is provided with a L-type end, and this lever external concave is provided with a L shape groove be inserted in for L-type end relatively.
The fool proof pipe joint cam handle of 21. tool according to claim 18, is characterized in that: this elastic component one end is provided with a uprightly end, and this pivot pin one end is provided with a confession and uprightly holds and stretch into and can set the driver slot of elastic component spring-go power size relatively.
The fool proof pipe joint cam handle of 22. tool according to claim 18, is characterized in that: this pivot pin one end is provided with a press-in handle body shaft hole inner wall and forms fixing embossed section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110399656.1A CN103133806B (en) | 2011-11-30 | 2011-11-30 | Pipe connector cam handle with safety device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110399656.1A CN103133806B (en) | 2011-11-30 | 2011-11-30 | Pipe connector cam handle with safety device |
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| Publication Number | Publication Date |
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| CN103133806A CN103133806A (en) | 2013-06-05 |
| CN103133806B true CN103133806B (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110399656.1A Active CN103133806B (en) | 2011-11-30 | 2011-11-30 | Pipe connector cam handle with safety device |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104048121A (en) * | 2014-06-25 | 2014-09-17 | 四川辉利达塑胶科技有限公司 | Pipe connector |
| CN106151736B (en) * | 2015-04-09 | 2018-10-19 | 李岳霖 | Quick coupling |
| TWM524045U (en) * | 2016-02-19 | 2016-06-11 | Fivetech Technology Inc | Mobile handle |
| CN107802091A (en) * | 2016-09-08 | 2018-03-16 | 晨兴企业股份有限公司 | The structure of lifting seat |
| WO2018117995A1 (en) * | 2016-12-24 | 2018-06-28 | Jeffrey Hartman | Double cam levers and safety lock for cam lock fitting |
| TWI614440B (en) * | 2017-06-02 | 2018-02-11 | Li yue lin | Anti-loose buckle and pipe joint applying the same |
| CN109396500A (en) * | 2018-12-24 | 2019-03-01 | 中铁局集团电务工程有限公司 | A kind of rigid contact net busbar connector hole drilling die |
| CN112324765A (en) * | 2020-09-04 | 2021-02-05 | 武汉雅虎光电设备有限公司 | Fast-assembling lock pipe device |
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| CN2225588Y (en) * | 1995-05-15 | 1996-04-24 | 笠源精密工业股份有限公司 | Quick-acting pipe joint |
| DE29707456U1 (en) * | 1997-04-24 | 1997-06-19 | Lee, Shen-Chin, Taipeh/T'ai-pei | Pipe connection |
| US5816623A (en) * | 1995-07-12 | 1998-10-06 | Chang; King | Self-locking quick disconnect coupling device |
| CN102192377A (en) * | 2010-03-16 | 2011-09-21 | 陈旺松 | Connecting rod type pipe joint cam handle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2225588Y (en) * | 1995-05-15 | 1996-04-24 | 笠源精密工业股份有限公司 | Quick-acting pipe joint |
| US5816623A (en) * | 1995-07-12 | 1998-10-06 | Chang; King | Self-locking quick disconnect coupling device |
| DE29707456U1 (en) * | 1997-04-24 | 1997-06-19 | Lee, Shen-Chin, Taipeh/T'ai-pei | Pipe connection |
| CN102192377A (en) * | 2010-03-16 | 2011-09-21 | 陈旺松 | Connecting rod type pipe joint cam handle |
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| CN103133806A (en) | 2013-06-05 |
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