Novel quick insertion connector
By designing detachable male and female connectors, the problem of air pipe damage caused by existing quick connectors is solved, achieving stable connection and flexible rotation of air pipes and equipment, and avoiding pipe damage.
Patent Information
- Application Number
- CN202423026516.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2034-12-09
AI Technical Summary
Existing quick-connect fittings cause damage to the air tube due to repeated friction between the air tube and the metal connector, requiring frequent replacement, and the disassembly process can easily cause damage to the tube.
The design incorporates a detachable male connector and a female connector. The male connector is permanently connected to the air pipe, while the female connector is connected to the equipment. The detachable connection is achieved through a hook and slot structure, allowing for 360-degree rotation and preventing repeated disassembly from damaging the pipeline.
It achieves a stable connection between the air tube and the equipment, avoids repeated disassembly and damage to the pipe and connector, and allows the pipe to rotate and swing flexibly during use without damage.
Smart Images

Figure CN223690626U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to mechanical parts technical field especially a new type fast plug joint. BACKGROUND
[0002] The quick connector is a kind of connector that can quickly connect and disconnect pipeline or gas circuit, is widely used in various fields, such as industry, medical treatment, scientific research etc.Quick connector is mainly applied in the working scene that pipeline needs to be frequently disassembled, for example, some working conditions utilize quick connector to connect gas pipe and equipment when device needs to be supplied with gas, and gas pipe and equipment are disconnected when device stops working, and the connection and disconnection of gas pipe and equipment need to use quick connector to realize, most quick connectors on market are directly connected gas pipe to female connector of quick connector when using, and gas pipe is directly disassembled from female connector when disassembling, this way can also realize the quick connection and disassembly of gas pipe and equipment, but gas pipe is PVC material and connector is metal material, after the contact of the two for many times, gas pipe is prone to be damaged, so gas pipe needs to be frequently replaced or damaged part of gas pipe is cut off, which causes the loss of gas pipe.
[0003] Chinese patent document (publication number: CN204042276U, patent name: a gas pipe quick connector) discloses the technical content as follows: first, transversely rotate shaft sleeve, so that safety latch enters into longitudinal shaft, then push shaft sleeve backward, make ball roll into steel ball groove, so that ball is in scattered state, at this time, insert connecting pipeline equipment such as gas pipe, after gas pipe is installed in place, release shaft sleeve, under the action of ejector spring, push ball out of steel ball groove, ball locks gas pipe, so as to realize quick connection, then transversely rotate shaft sleeve, so that safety latch enters into horizontal shaft, and allows self-locking.
[0004] From the above embodiment and corresponding drawing display, the gas pipe quick connector uses steel ball to extrude gas pipe, so as to realize the clamping of gas pipe, but the repeated disassembly of gas pipe is realized by repeatedly rubbing with steel ball, which can easily damage gas pipe in use, so that gas pipe needs to be frequently replaced. UTILITY MODEL CONTENT
[0005] The utility model overcomes the defects in the prior art, sets up detachable male connecting sleeve and female connector, the female connector can be connected with equipment for a long time, the male connecting sleeve can be connected with gas pipe or infusion pipeline for a long time, when connecting equipment with pipeline, only need to butt joint male connecting sleeve and female connector, avoid the damage of pipeline caused by repeated disassembly of pipeline and connector.
[0006] In order to solve the above technical problems, the utility model is realized by the following technical scheme:
[0007] A new type of quick insertion joint, comprising a female joint and a male connecting sleeve, the other end of the female joint is screwed with a device, one end of the male connecting sleeve is connected with a pipeline, and the other end of the male connecting sleeve is detachably connected with the female joint;
[0008] The female joint comprises a main body, a sleeve is arranged in the main body, the sleeve comprises sleeve joint blocks arranged in a ring shape, a walking gap is arranged between every two sleeve joint blocks, and a hook is arranged at the position of the sleeve joint block towards the shaft center;
[0009] The male connecting sleeve comprises a channel, and a clamping groove is arranged on the outer periphery of the channel;
[0010] When the male connecting sleeve is inserted into the female joint, the hook is inserted into the clamping groove.
[0011] Further, after the male connecting sleeve is connected with the female joint, the two can relatively rotate.
[0012] Further, one end of the sleeve joint block is provided with a lower top inclined surface and an outer top inclined surface, the front end of the main body is provided with an inner top inclined surface, the main body is sleeved with a sleeve cap, the lower end of the sleeve cap is provided with a sleeve cap inner hook towards the shaft center, and the upper end of the sleeve cap inner hook is provided with an upper top inclined surface; when the male connecting sleeve is inserted into the female joint, the hook is inserted into the clamping groove, at this time, the spring pushes the inner core outward, the inner core pushes the male connecting sleeve outward, because the hook is inserted into the clamping groove, the clamping groove of the male connecting sleeve drives the sleeve to move outward, when the outer top inclined surface is attached to the inner top inclined surface, the inner top inclined surface gathers the sleeve joint block towards the shaft center of the sleeve, at this time, the female joint and the male connecting sleeve are connected together;
[0013] The main body is provided with a clamping block walking gap, when the sleeve cap is pushed away from the end of the male connecting sleeve, the upper top inclined surface is attached to the lower top inclined surface, the bottom surface of the sleeve contacts the end surface of the third sealing ring, and the sleeve stops moving, at this time, the sleeve cap is continuously pushed, the upper top inclined surface has an outward expansion force on the lower top inclined surface, at this time, the sleeve joint block is scattered towards the periphery, the clamping block walking gap provides displacement space for the sleeve joint block to scatter, the hook is scattered away from the shaft center of the sleeve, at this time, the hook is separated from the clamping groove, and the female joint is separated from the male connecting sleeve.
[0014] Further, the main body is provided with an inner core, the inner core is provided with a center block in the inside, the center block is provided with a second sealing ring at the corresponding outer periphery of the inner core, the center block is provided with a first air passage and a second air passage at two ends, the first air passage is provided with a first through hole close to the center block, and the second air passage is provided with a second through hole close to the center block.
[0015] Further, the main body is provided with a flow-through section and a blocked section in communication, the inner diameter of the flow-through section is greater than that of the blocked section;
[0016] When the female connector and the male connecting sleeve are plugged together, the first vent groove and the second vent groove are both at the flow-through section;
[0017] When the female connector and the male connecting sleeve are separated, the first vent groove and the second vent groove are both at the blockage section.
[0018] Further, the inner core is sleeved with a spring, the top end of the inner part of the main body is provided with a first step position, the middle part of the inner part of the main body is provided with a second step position, one end of the spring abuts against the first step position, and the other end of the spring abuts against the outer peripheral step position of the inner core.
[0019] Further, the outer periphery of the main body is provided with a first sealing ring;
[0020] The second step position is provided with a gasket away from one side of the inner core, the lower side of the gasket is provided with a third sealing ring, and the clamping sleeve is located below the third sealing ring.
[0021] Further, the outer periphery of the main body is provided with a first limiting ring protruding outward, the inner side of the clamping sleeve cap is provided with a second limiting ring protruding inward, and when the clamping sleeve cap is sleeved on the outer side of the main body, the first limiting ring is located between the second limiting ring of the clamping sleeve cap and the upper inclined surface.
[0022] Further, one end of the channel away from the female connector is sleeved with an outer cover, and the inner part of the outer cover is provided with an inner locking ring;
[0023] The inner side of the channel is provided with a channel inner clamping ring.
[0024] Further, the inner locking ring is made of silicone rubber.
[0025] Compared with the prior art, the utility model has the beneficial effects that:
[0026] 1. The male connecting sleeve and the female connector are detachably connected, the female connector can be connected with equipment for a long time, the male connecting sleeve can be connected with a gas pipe or a liquid conveying pipe for a long time, and when the equipment and the pipe are connected, the male connecting sleeve and the female connector only need to be butted, so that the pipe is prevented from being damaged due to repeated disassembly and assembly.
[0027] 2. The male connecting sleeve and the female connector can rotate at 360 degrees relative to each other, and the pipe can be conveniently swung and rotated in the use process without being damaged. BRIEF DESCRIPTION OF DRAWINGS
[0028] The accompanying drawings are used to provide a further understanding of the utility model, together with embodiments of the utility model, to explain the utility model, and do not constitute a limitation to the utility model, and in the drawings:
[0029] Figure 1 is a general schematic view of a quick plug-in connector according to an embodiment of the utility model;
[0030] Figure 2 It is the structure schematic view that female joint and male connecting sleeve of the embodiment of the utility model are separated;
[0031] Figure 3 It is the sectional view of female joint of the embodiment of the utility model;
[0032] Figure 4 It is the sectional view of main body of the embodiment of the utility model;
[0033] Figure 5 It is the explosion schematic view of female joint of the embodiment of the utility model;
[0034] Figure 6 It is the explosion schematic view of male connecting sleeve of the embodiment of the utility model;
[0035] Figure 7 It is the sectional view of card sleeve cap of the embodiment of the utility model;
[0036] Figure 8 It is the sectional view of inside structure when female joint and male connecting sleeve of the embodiment of the utility model are separated;
[0037] Figure 9 It is the sectional view of inside structure when female joint and male connecting sleeve of the embodiment of the utility model are connected.
[0038] In the drawing: 1, female joint;101, main body;1011, card block walking gap;1012, first limit ring;1013, first step position;1014, second step position;1015, flow section;1016, block section;1017, inner top inclined surface;102, card sleeve cap;1021, upper top inclined surface;1022, second limit ring;1023, anti-skid line;103, inner core;1031, first through hole;1032, second through hole;1033, center block;1034, first air passage;1035, second air passage;104, card sleeve;1041, sleeve card block;10411, lower top inclined surface;10412, card hook;10413, outer top inclined surface;1042, walking gap;1043, card sleeve bottom surface;105, first sealing ring;106, spring;107, second sealing ring;108, gasket;109, third sealing ring;1091, third sealing ring end face;2, male connecting sleeve;201, channel;2011, card slot;2012, channel inner clamping ring;202, inner locking ring;203, outer cover. DETAILED DESCRIPTION
[0039] The preferred embodiments of the utility model are described below in conjunction with the drawings, and it should be understood that the preferred embodiments described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model.
[0040] AsFigures 1 to 9 As shown, a new type of quick insertion joint, including female joint 1 and male connecting sleeve 2, one end of male connecting sleeve 2 is connected with pipeline, the other end of male connecting sleeve 2 is detachably connected with female joint 1; female joint 1 can be connected with equipment for a long time, male connecting sleeve 2 can be connected with gas pipe or infusion pipeline for a long time, when connecting equipment with pipeline, only need to butt joint male connecting sleeve 2 and female joint 1, avoid damaging pipeline by repeatedly disassembling pipeline and joint.
[0041] After male connecting sleeve 2 is connected with female joint 1, they can relatively rotate 360 degrees, so in use process, it is also convenient to swing and rotate angle of pipeline without damaging pipeline.
[0042] Female joint 1 includes main body 101, main body 101 is provided with clamping sleeve 104, clamping sleeve 104 includes annularly distributed sleeve clamping block 1041, walking gap 1042 is arranged between every two sleeve clamping blocks 1041, sleeve clamping block 1041 is provided with clamping hook 10412 towards the axial position; male connecting sleeve 2 includes channel 201, channel 201 is provided with clamping groove 2011 outside; when male connecting sleeve 2 is inserted into female joint 1, clamping hook 10412 is inserted into clamping groove 2011.
[0043] One end of sleeve clamping block 1041 is provided with lower top inclined surface 10411 and outer top inclined surface 10413, front end of main body 101 is provided with inner top inclined surface 1017, main body 101 is provided with clamping sleeve cap 102, lower end of clamping sleeve cap 102 is provided with clamping sleeve cap inner hook towards the axial position, upper end of clamping sleeve cap inner hook is provided with upper top inclined surface 1021, when male connecting sleeve 2 is inserted into female joint 1, clamping hook 10412 is inserted into clamping groove 2011, at this time, spring 106 pushes inner core 103 outward, inner core 103 pushes male connecting sleeve 2 outward, because clamping hook 10412 is inserted into clamping groove 2011, clamping groove 2011 of male connecting sleeve 2 drives clamping sleeve 104 to move outward, when outer top inclined surface 10413 is attached to inner top inclined surface 1017, inner top inclined surface 1017 gathers sleeve clamping block 1041 towards the axial direction of clamping sleeve 104, at this time, female joint 1 and male connecting sleeve 2 are connected together;
[0044] The main body 101 is provided with a clamping block walking gap 1011. When the clamping sleeve cap 102 is pushed away from the end of the male connecting sleeve 2, the upper inclined surface 1021 is attached to the lower inclined surface 10411, and the bottom surface 1043 of the clamping sleeve 104 contacts the end surface 1091 of the third sealing ring 109, and the clamping sleeve 104 stops moving. At this time, continue to push the clamping sleeve cap 102, and the upper inclined surface 1021 will have an outward expansion force on the lower inclined surface 10411. At this time, the sleeve clamping block 1041 is scattered around, the clamping block walking gap 1011 provides displacement space for the sleeve clamping block 1041 to scatter, and the clamping hook 10412 is scattered away from the axis of the clamping sleeve 104. At this time, the clamping hook 10412 is separated from the clamping groove 2011, and the female connector 1 is separated from the male connecting sleeve 2.
[0045] When the sleeve clamping block 1041 is gathered to the axis of the clamping sleeve 104, the walking gap 1042 is squeezed by the sleeve clamping block 1041 on both sides and becomes smaller. When the sleeve clamping block 1041 is scattered away from the axis of the clamping sleeve 104, the walking gap 1042 is squeezed and separated by the sleeve clamping block 1041 and becomes smaller. The walking gap 1042 provides space for the deformation of the sleeve clamping block 1041.
[0046] The inner core 103 is arranged in the main body 101. The inner core 103 is provided with a center block 1033. The second sealing ring 107 is arranged at the outer periphery of the inner core 103 corresponding to the center block 1033. The second sealing ring 107 is made of rubber. The first air groove 1034 and the second air groove 1035 are arranged at both ends of the center block 1033. The first air groove 1034 is provided with a first through hole 1031 close to the center block 1033. The second air groove 1035 is provided with a second through hole 1032 close to the center block 1033. The main body is provided with a flow-through section 1015 and a blocked section 1016 in communication. The inner diameter of the flow-through section 1015 is greater than the inner diameter of the blocked section 1016. As shown in FIG. 9, when the female connector 1 and the male connecting sleeve 2 are inserted together, the first air groove 1034 and the second air groove 1035 are both located in the flow-through section 1015. The inner diameter of the flow-through section 1015 is greater than the outer diameter of the inner core 103. Therefore, when gas or liquid flows from the pipeline into the female connector 1 through the male connecting sleeve 2, the gas or liquid is blocked by the center block 1033 after reaching the center block 1033, and then flows from the second through hole 1032 around the center block 1033 to the gap between the flow-through section 1015 and the inner core 103, and then flows to the first air groove 1034 through the first through hole 1031, and finally flows out of the main body 101.
[0047] When the female connector 1 and the male connecting sleeve 2 are separated, the first air groove 1034 and the second air groove 1035 are both located in the blocked section 1016, as shown in FIG. 10. Figure 8As shown, the inner diameter of the blocking section 1016 fits the outer diameter of the inner core 103, and the second sealing ring 107 blocks the gap between the blocking section 1016 and the inner core 103, so that the gas or liquid cannot flow through the inner core 103 to the other end of the female connector 1.
[0048] The spring 106 is sleeved on the inner core 103, the top end of the inside of the main body 101 is provided with a first step position 1013, the middle of the inside of the main body 101 is provided with a second step position 1014, one end of the spring 106 abuts against the first step position 1013, and the other end of the spring 106 abuts against the outer peripheral step position of the inner core 103. The spring 106 has a downward pressing elastic force on the inner core 103, when the male connector sleeve 2 is inserted into the inside of the main body 101, the top end of the male connector sleeve 2 abuts against the lower end of the inner core 103, when the clamping hook 10412 is inserted into the clamping groove 2011, the channel 201 is inserted into the inside of the main body 101 and abuts against the lower end of the inner core 103, so that the inner core 103 presses the spring 106 to make the spring 106 be compressed, at this time, when the male connector sleeve 2 passes the pressure gas or liquid, the inside of the male connector sleeve 2 and the female connector 1 is subjected to the pressure of the gas or liquid, the greater the pressure is, the greater the outward pushing force of the male connector sleeve 2 is, and the greater the inward pressing force of the sleeved clamping block 1041 is, the clamping hook (10412) is pressed into the clamping groove (2011) more tightly, and the female connector 1 and the male connector sleeve 2 are connected more tightly, thereby ensuring the stability and safety in use.
[0049] The outer side of the clamping sleeve cap 102 is provided with an anti-skid pattern 1023, when the pipeline connected by the male connector sleeve 2 is no longer ventilated or liquid-passed, the operator holds the anti-skid pattern 1023 on the outer side of the clamping sleeve cap 102 and pulls the clamping sleeve cap 102 downward, the sleeved clamping block 1041 of the clamping sleeve 104 spreads outwards to make the clamping hook 10412 no longer inserted into the clamping groove 2011, and the channel 201 is ejected by the elastic force of the spring 106.
[0050] The outer periphery of the main body 101 is provided with the first sealing ring 105, when the main body 101 is inserted into the through hole of the equipment or other pipeline, the first sealing ring 105 seals the connection between the main body 101 and the connecting device, to avoid liquid or gas leakage.
[0051] The second step position 1014 away from the inner core 103 is provided with a gasket 108, the lower side of the gasket 108 is provided with a third sealing ring 109, and the clamping sleeve 104 is located below the third sealing ring 109. The third sealing ring 109 is made of rubber, and the third sealing ring 109 buffers when the clamping sleeve 104 moves in the inside of the main body 101, to avoid damage caused by mutual collision and friction between metal-made parts.
[0052] The first limiting ring 1012 is outwardly protruded on the outer periphery of the main body 101, and the second limiting ring 1022 is inwardly protruded on the inner side of the sleeve cap 102. When the sleeve cap 102 is sleeved on the outer side of the main body 101, the first limiting ring 1012 is located between the second limiting ring 1022 and the upper inclined surface 1021 of the sleeve cap 102. When the sleeve cap 102 is movable, the second limiting ring 1022 limits the first limiting ring 1012, preventing the sleeve cap 102 from being separated from the main body 101.
[0053] The outer cover 203 is sleeved on the end of the channel 201 away from the female connector 1, and the inner locking ring 202 is arranged in the inner cover 203 and made of silicone rubber. The channel inner ring 2012 is arranged on the inner side of the channel 201. When the pipeline is connected with the male connector 2, the pipeline is inserted into the inner part of the male connector 2, and the channel inner ring 2012 can clamp the pipeline, thereby preventing the pipeline from being separated from the channel 201. The locking ring 202 can enhance the friction between the inner part of the male connector 2 and the outer wall of the pipeline, and can also lock the pipeline.
[0054] Finally, it should be noted that: the above is only the preferred embodiment of the utility model, and is not used to limit the utility model, although the utility model is described in detail with reference to the embodiment, for the person skilled in the art, it still can modify the technical scheme recorded in each embodiment, or equivalent replacement to part of the technical features, but any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model, should be included in the protection scope of the utility model.
Claims
1. A new quick insert joint, characterized in that, The utility model provides a female joint (1) and male connecting sleeve (2), one end of male connecting sleeve (2) is connected with pipeline, the other end of male connecting sleeve (2) is detachably connected with female joint (1); The female joint (1) comprises a main body (101), a sleeve (104) is arranged in the main body (101), the sleeve (104) comprises sleeve joint blocks (1041) arranged in a ring shape, a displacement gap (1042) is arranged between every two sleeve joint blocks (1041), and a hook (10412) is arranged at the position of the sleeve joint blocks (1041) towards the axis; The male connecting sleeve (2) comprises a channel (201), and a clamping groove (2011) is arranged on the outer periphery of the channel (201); When the male connecting sleeve (2) is inserted into the female joint (1), the hook (10412) is inserted into the clamping groove (2011).
2. The new quick insert joint according to claim 1, characterized in that, After the male connecting sleeve (2) is connected with the female joint (1), the two can rotate relative to each other by 360 degrees.
3. The new quick insert joint according to claim 2, characterized in that, One end of the sleeve joint block (1041) is provided with a lower top inclined surface (10411) and an outer top inclined surface (10413), the front end of the main body (101) is provided with an inner top inclined surface (1017), the main body (101) is sleeved with a sleeve cap (102), the lower end of the sleeve cap (102) is provided with a sleeve cap inner hook towards the axis direction, the upper end of the sleeve cap inner hook is provided with an upper top inclined surface (1021), when the male connecting sleeve (2) is inserted into the female joint (1), the hook (10412) is inserted into the clamping groove (2011), at this time, the spring (106) pushes the inner core (103) outward, the inner core (103) pushes the male connecting sleeve (2) outward, because the hook (10412) is inserted into the clamping groove (2011), the clamping groove (2011) of the male connecting sleeve (2) drives the sleeve (104) to move outward, when the outer top inclined surface (10413) is attached to the inner top inclined surface (1017), the inner top inclined surface (1017) gathers the sleeve joint blocks (1041) towards the axis direction of the sleeve (104), at this time, the female joint (1) and the male connecting sleeve (2) are connected together; When the sleeve cap (102) is pushed away from the end of the male connecting sleeve (2), the upper top inclined surface (1021) is attached to the lower top inclined surface (10411), when the bottom surface (1043) of the sleeve (104) contacts the end surface (1091) of the third sealing ring (109), the sleeve (104) stops moving, at this time, the sleeve cap (102) is continuously pushed, the upper top inclined surface (1021) has an outward expansion force on the lower top inclined surface (10411), at this time, the sleeve joint blocks (1041) are scattered towards the periphery, the displacement space is provided for the sleeve joint blocks (1041) to scatter when the clamping block displacement gap (1011) is provided, the hook (10412) is also scattered away from the axis direction of the sleeve (104), at this time, the hook (10412) is separated from the clamping groove (2011), and the female joint (1) is separated from the male connecting sleeve (2).
4. The new quick insert joint according to claim 3, characterized in that, The inner core (103) is arranged in the main body (101), the inside of the inner core (103) is provided with a center block (1033), the second sealing ring (107) is arranged at the outer periphery of the inner core (103) corresponding to the center block (1033), the first vent groove (1034) and the second vent groove (1035) are arranged at both ends of the center block (1033), the first through hole (1031) is arranged near the center block (1033) at the first vent groove (1034), and the second through hole (1032) is arranged near the center block (1033) at the second vent groove (1035).
5. The novel quick insert joint of claim 4, wherein, The flow-through section (1015) and the blocked section (1016) are arranged in the main body in communication, and the inner diameter of the flow-through section (1015) is greater than that of the blocked section (1016); When the female connector (1) and the male connector sleeve (2) are inserted together, the first vent groove (1034) and the second vent groove (1035) are both located at the flow-through section (1015); When the female connector (1) and the male connector sleeve (2) are separated, the first vent groove (1034) and the second vent groove (1035) are both located at the blocked section (1016).
6. The novel quick insert joint of claim 5, wherein, The spring (106) is sleeved on the inner core (103), the top end of the inside of the main body (101) is provided with the first step position (1013), the middle part of the inside of the main body (101) is provided with the second step position (1014), one end of the spring (106) abuts against the first step position (1013), and the other end of the spring (106) abuts against the outer periphery step position of the inner core (103).
7. The new quick insert joint according to claim 6, characterized in that, The outer periphery of the main body (101) is provided with the first sealing ring (105); The second step position (1014) is provided with the gasket (108) away from the inner core (103), the lower side of the gasket (108) is provided with the third sealing ring (109), and the sleeve (104) is located below the third sealing ring (109).
8. The new quick insert joint according to claim 7, characterized in that, The outer periphery of the main body (101) is provided with the first limiting ring (1012) protruding outward, the inner side of the sleeve cap (102) is provided with the second limiting ring (1022) protruding inward, when the sleeve cap (102) is sleeved on the outside of the main body (101), the first limiting ring (1012) is located between the second limiting ring (1022) and the upper inclined surface (1021) of the sleeve cap (102).
9. The new quick coupler according to any one of claims 1 to 7, characterized in that The outer cover (203) is sleeved at one end of the channel (201) away from the female connector (1), and the inner locking ring (202) is arranged in the outer cover (203); The channel inner clamping ring (2012) is arranged on the inner side of the channel (201).
10. The novel quick insert joint of claim 9, wherein, The inner locking ring (202) is made of silicone rubber.
Citation Information
Patent Citations
Gas pipe rapid connector
CN204042276U