Squeezing knob type locking connector

Abstract

The utility model discloses an extrusion knob type locking connector which comprises a ball, a connecting sleeve, a locking clamping sleeve, an upper shell assembly and a lower shell assembly, an upper valve element is elastically arranged in the upper shell assembly, and a first sealing ring is arranged on the upper valve element; a guide groove is formed in the outer side of the connecting sleeve, and a locking block is arranged on the locking clamping sleeve. An ejector rod and a lower valve element are arranged in the lower shell assembly, the ejector rod is sleeved with the lower valve element, and a second sealing ring is arranged on the ejector rod. The upper shell assembly is arranged to extrude the lower shell assembly, the ejector rod is used for abutting against the upper valve element, the abutting balls are used for clamping the upper shell assembly for fixing and limiting in the mode that the clamping sleeve is rotationally clamped and locked, the lower shell assembly and the upper shell assembly are connected and communicated, and meanwhile no gap is reserved between the ejector rod and the upper valve element in an abutting mode. And during disassembly, the locking clamping sleeve is rotationally unlocked and automatically popped out, and meanwhile, the communicating position is synchronously sealed by the sealing ring, so that the purpose of no external leakage during disassembly is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of equipment cooling pipeline accessories, in particular to an extrusion knob type locking connector. Background Art

[0002] Currently, quick-connect devices widely used in large data centers for connecting liquid cooling pipes consist of a male plug and a female connector. In actual use, after the male and female ends are plugged in, there is a risk that the locking mechanism will automatically unlock due to misoperation, external vibration, and pulse pressure. This can lead to accidental disconnection of the pipe, which in turn prevents heat-generating components from being effectively cooled, resulting in functional degradation, damage, or even spontaneous combustion. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide an extrusion knob type locking connector which can ensure locking stability, prevent automatic unlocking and prevent medium leakage during the disassembly process.

[0004] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide an extruded knob type locking connector, comprising a connecting sleeve embedded with a ball, a locking sleeve elastically arranged on the outside of the connecting sleeve, an upper shell assembly clamped with the ball, and a lower shell assembly detachably connected to the connecting sleeve, an upper valve core is elastically provided in the upper shell assembly, and a first sealing ring is provided on the upper valve core; an "L"-shaped guide groove is provided on the outside of the connecting sleeve, and a locking block is provided at a position corresponding to the guide groove on the locking sleeve; a push rod and an elastically arranged lower valve core are provided in the lower shell assembly, and the lower valve core is sleeved on the outer side wall of one side of the push rod. A second sealing ring is provided at the corresponding socket position on the push rod; when in use, the upper shell assembly squeezes the lower valve core and makes the push rod push out the upper valve core, so that the upper shell assembly and the lower shell assembly are connected, and the locking sleeve is abutted against the ball to clamp the upper shell assembly to limit the position, and the locking sleeve is rotated, and the locking block is clamped and limited in the horizontal section of the guide groove; when disassembling, the locking sleeve is first rotated, and the locking block moves to the vertical section position in the guide groove, and then the locking sleeve is squeezed and moved, and the ball leaves the position of the clamping limit with the upper shell assembly. Under the action of elastic force, the upper valve core pushes back to the push rod, and the liquid outlet end of the upper shell assembly is sealed with the first sealing ring, and the second sealing ring is sealed with the liquid outlet end of the lower shell assembly.

[0005] When the locking sleeve is rotated, the locking block is locked in the horizontal section of the guide groove, which can prevent the valve from being loosened due to external forces and automatically unlocked. When disassembling, first rotate the locking sleeve, the locking block moves to the vertical section position in the guide groove, and then squeeze and move the locking sleeve, the locking block moves in the vertical section, and the ball leaves the position of the upper housing assembly and is locked in the installation position. The cam is pressed against the valve core, and the cam is pressed against the valve stem to release the cam, which in turn releases the cam, which in turn releases the cam.

[0006] In order to simplify the structure and facilitate installation, preferably, a mounting boss is provided on one side of the connecting sleeve, and a plurality of mounting holes with embedded balls are provided along the circumferential direction of the connecting sleeve on the other side. An anti-slip groove is provided on the outer wall of the locking sleeve, and a connecting boss is provided along the circumferential direction on the inner wall of the locking sleeve. A return spring is provided on the outer sleeve of the connecting sleeve, one end of the return spring abuts against the end face of the corresponding end of the mounting boss, and the other end abuts against the inner end face of the connecting boss, and the inner wall of the connecting boss is fitted with a plurality of balls.

[0007] In order to facilitate the use of the locking sleeve, it is preferred that a placement groove is provided at a position on one side of the mounting hole corresponding to the connecting sleeve, and a retaining spring is provided in the placement groove. The outer wall of the retaining spring protrudes from the notch of the placement groove, and the protruding end of the retaining spring abuts against the outer end face of the connecting boss for limitation.

[0008] In order to improve the stability of the connection limit, preferably, the upper shell assembly includes a male plug sleeve, a placement hole is provided on the male plug sleeve along the axial direction, a directional boss is provided at one end of the outer side of the male plug sleeve, and a limiting boss is provided at the other end, and a limiting groove is provided on the male plug sleeve at a position corresponding to the position between the directional boss and the limiting boss; during installation, the male plug sleeve is extended into the connecting sleeve, and the locking sleeve is moved, and the inner side wall of the connecting boss simultaneously pushes the inner side of multiple balls to emerge from the inner hole of the installation hole and extend into the limiting groove, thereby realizing the locking and limiting of the male plug sleeve by the balls.

[0009] In order to ensure the unlocking and sealing synchronization of the first sealing ring, preferably, the upper shell assembly also includes a first compression spring arranged in the placement hole, one end of the first compression spring is fixedly connected to the stop ring fixed in the placement hole, and the other end is fixedly connected to the upper valve core, and a first sealing ring is embedded in the outer wall of the upper valve core, and the outer wall of the first sealing ring is in contact with the hole wall of the placement hole.

[0010] In order to facilitate the limiting of the upper valve core and avoid the first sealing ring being exposed and affecting the sealing effect, it is preferred that a transition slope is provided around the outer wall of the upper valve core, and a limiting slope is provided at a position corresponding to the transition slope on the hole wall of the placement hole. The limiting slope fits into the transition slope, and the end face of the non-connecting end of the upper valve core is flush with the end face of the hole opening corresponding to the placement hole.

[0011] In order to ensure the synchronization of unlocking and sealing of the second sealing ring, preferably, the lower shell assembly also includes a female plug sleeve that is threadedly connected to the connecting sleeve, a step hole is provided in the connecting sleeve, and a push rod is fixed in the female plug sleeve and extends into the small hole end of the step hole, the extended end of the push rod is sleeved in the directional hole of the lower valve core, and a second compression spring is also sleeved on the outside of the push rod, and a connecting protrusion is provided around one side of the lower valve core in a circumferential direction, one end of the second compression spring abuts the lower end face of the connecting protrusion, and the other end abuts the inner side wall of the female plug sleeve; a second sealing ring is embedded in the outer side wall of the push rod, and the outer side wall of the second sealing ring abuts against the inner side wall of the directional hole.

[0012] In order to facilitate the limiting of the lower valve core and avoid the second sealing ring being exposed and affecting the sealing effect, it is preferred that a through hole connected to the mounting hole is provided in the connecting sleeve, and a transition hole is provided between the through hole and the step hole, and a sleeve is provided on the outside of the second compression spring and extends into the large hole end of the step hole, and an upper sealing ring, an isolation ring and a lower sealing ring are stacked in sequence from top to bottom between the end face of the inserted end of the sleeve and the bottom of the step hole, the upper end face of the upper sealing ring abuts against the bottom of the step hole, and the lower end face of the lower sealing ring abuts against the end face of the inserted end of the sleeve, and the isolation ring is sleeved on the outside of the lower valve core.

[0013] In order to facilitate the limiting of the sleeve and simplify the structure, it is preferred that the step surface of the step hole is a slope structure that is narrow at the top and wide at the bottom, and a first positioning slope is provided on the outer wall of the sleeve at a position corresponding to the step surface of the step hole, and a second positioning slope is provided on the inner wall of the sleeve at a position corresponding to the first positioning slope; when installed, the sleeve is inserted into the step hole, and the end face of the inserted end of the sleeve abuts against the lower end face of the lower sealing ring, the first positioning slope abuts against the step surface of the step hole, and the second positioning slope abuts against the upper end face of the connecting protrusion.

[0014] In order to avoid interference with sealing and movement due to material deformation, it is preferred that a mounting groove is provided in the female plug sleeve at a position corresponding to the position connected to the connecting sleeve, and a mounting ring is connected to one end of the push rod, and the mounting ring is fixed in the mounting groove.

[0015] Beneficial effects: The utility model sets an upper shell assembly to squeeze the lower shell assembly, and uses a push rod to abut the upper valve core, and uses a rotating clamping locking sleeve to abut the upper shell assembly to fix the limit, so that the lower shell assembly and the upper shell assembly are connected through, and there is no gap between the push rod and the upper valve core; when disassembling, the locking sleeve is rotated to unlock and automatically pop out, and at the same time, the sealing ring is used to seal the connecting position synchronously, so as to achieve the purpose of disassembly without leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 This is an exploded view of the present invention.

[0018] Figure 2 This is a schematic diagram of the assembly structure of the utility model before connection.

[0019] Figure 3 It is a structural diagram of the male plug sleeve.

[0020] Figure 4 It is a structural diagram of the upper valve core.

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the connecting sleeve.

[0022] Figure 6 Schematic diagram of the internal structure of the connecting sleeve.

[0023] Figure 7 It is a schematic diagram of the three-dimensional structure of the locking ferrule.

[0024] Figure 8 This is a cross-sectional view of the internal structure of the locking ferrule.

[0025] Figure 9 It is a structural diagram of the lower valve core.

[0026] Figure 10 It is a schematic diagram of the three-dimensional structure of the mounting ring and the ejector rod.

[0027] Figure 11 This is a schematic diagram of the use state of the utility model.

[0028] The meanings of the reference numerals in the accompanying drawings are:

[0029] Connecting sleeve 1; mounting boss 10; placement groove 101; retaining spring 102; ball bearing 11; connecting boss 121; anti-slip groove 122; mounting hole 13; guide groove 14; stepped hole 15; transition hole 16; locking block 17; first positioning bevel 171; second positioning bevel 172; return spring 18;

[0030] Upper valve core-2; first sealing ring-20; transition slope-21; sleeve-3;

[0031] Male plug sleeve 4; limiting boss 40; placement hole 401; backstop ring 402; limiting slope 403; directional boss 41; limiting groove 42; lower valve core 5; push rod 50; second sealing ring 51; connecting boss 52; directional hole 53; mounting ring 54;

[0032] Isolation ring 60; first compression spring 61; second compression spring 62; upper sealing ring 63; lower sealing ring 64; female plug sleeve 7; mounting groove 71; third sealing ring 72. DETAILED DESCRIPTION

[0033] Depend on Figures 1 to 11 As shown, the utility model includes a connecting sleeve 1 embedded with a ball 11, a locking sleeve 12 elastically arranged on the outside of the connecting sleeve 1, an upper shell assembly clamped with the ball 11, and a lower shell assembly detachably connected to the connecting sleeve 1, an upper valve core 2 is elastically provided in the upper shell assembly, and a first sealing ring 20 is provided on the upper valve core 2; an "L"-shaped guide groove 14 is provided on the outside of the connecting sleeve 1, and a locking block 17 is provided at a position corresponding to the guide groove 14 on the locking sleeve 12; a push rod 50 and an elastically arranged lower valve core 5 are provided in the lower shell assembly, the lower valve core 5 is sleeved on the outer side wall of one side of the push rod 50, and a second sealing ring is provided at the corresponding sleeve position on the push rod 50. Sealing ring 51; when in use, the upper shell assembly squeezes the lower valve core 5, and makes the push rod 50 push out the upper valve core 2, the upper shell assembly and the lower shell assembly are connected, and the locking sleeve abuts the ball 11 to clamp the upper shell assembly to limit the position, rotate the locking sleeve 12, and the locking block 17 is clamped and limited in the horizontal section position of the guide groove 14; when disassembling, first rotate the locking sleeve 12, the locking block 17 moves to the vertical section position in the guide groove 14, and then squeeze the locking sleeve 12, the ball 11 leaves the position of clamping and limiting with the upper shell assembly, and under the action of elastic force, the upper valve core 2 pushes back the push rod 50, the liquid outlet end of the upper shell assembly is sealed with the first sealing ring 20, and the second sealing ring 51 is sealed with the liquid outlet end of the lower shell assembly.

[0034] Specifically, a mounting boss 10 is provided on one side of the connecting sleeve 1, and a plurality of mounting holes 13 with embedded balls 11 are provided along the circumferential direction of the connecting sleeve 1 on the other side. An anti-slip groove 122 is provided on the outer wall of the locking sleeve 12, and a connecting boss 121 is provided along the circumferential direction on the inner wall of the locking sleeve 12. A return spring 18 is sleeved on the outer side of the connecting sleeve 1, one end of the return spring 18 abuts against the end face of the corresponding end of the mounting boss 10, and the other end abuts against the inner end face of the connecting boss 121, and the inner side wall of the connecting boss 121 and the plurality of balls 11 are all fitted together; a placement groove 101 is provided at a position corresponding to one side of the mounting hole 13 on the connecting sleeve 1, and a retaining spring 102 is provided in the placement groove 101, and the outer wall of the retaining spring 102 protrudes from the notch of the placement groove 101, and the protruding end of the retaining spring 102 abuts against the outer end face of the connecting boss 121 for limiting the position.

[0035] The upper shell assembly includes a male plug sleeve 4, on which a placement hole 401 is axially penetrated, a directional boss 41 is provided at one end of the outer side of the male plug sleeve 4, and a limiting boss 40 is provided at the other end, and a limiting groove 42 is provided on the male plug sleeve 4 at a position corresponding to the position between the directional boss 41 and the limiting boss 40; during installation, the male plug sleeve 4 is inserted into the connecting sleeve 1, and the locking sleeve 12 is moved. The inner side wall of the connecting boss 121 simultaneously pushes the inner side of multiple balls 11 to emerge from the inner side opening of the mounting hole 13 and extend into the limiting groove 42, so that the balls 11 lock and limit the male plug sleeve 4.

[0036] The upper shell assembly also includes a first compression spring 61 arranged in the placement hole 401, one end of the first compression spring 61 is fixedly connected to the stop ring 402 fixed in the placement hole 401, and the other end is fixedly connected to the upper valve core 2, and a first sealing ring 20 is embedded in the outer wall of the upper valve core 2, and the outer wall of the first sealing ring 20 is in contact with the hole wall of the placement hole 401; a transition slope 21 is provided around the outer wall of the upper valve core 2, and a limiting slope 403 is provided at a position corresponding to the transition slope 21 on the hole wall of the placement hole 401, and the limiting slope 403 is in contact with the transition slope 21, and the end face of the non-connection end of the upper valve core 2 is flush with the end face of the hole opening corresponding to the placement hole 401.

[0037] The lower shell assembly also includes a female plug sleeve 7 that is threadedly connected to the connecting sleeve 1. A step hole 15 is provided in the connecting sleeve 1. A push rod 50 is fixed in the female plug sleeve 7 and extends into the small hole end of the step hole 15. The extended end of the push rod 50 is sleeved in the directional hole 53 of the lower valve core 5. A second compression spring 62 is also sleeved on the outside of the push rod 50. A connecting protrusion 52 is circumferentially arranged on one side of the lower valve core 5. One end of the second compression spring 62 abuts against the lower end surface of the connecting protrusion 52, and the other end abuts against the inner side wall of the female plug sleeve 7; a second sealing ring 51 is embedded on the outer side wall of the push rod 50, and the outer side wall of the second sealing ring 51 abuts against the inner side wall of the directional hole 53.

[0038] A through hole connected to the mounting hole 13 is provided in the connecting sleeve 1, and a transition hole 16 is provided between the through hole and the step hole 15. A sleeve 3 is provided on the outside of the second compression spring 62 and extends into the large hole end of the step hole 15. An upper sealing ring 63, an isolation ring 60 and a lower sealing ring 64 are stacked in sequence from top to bottom between the end face of the inserted end of the sleeve 3 and the bottom of the step hole 15. The upper end face of the upper sealing ring 63 abuts against the bottom of the step hole 15, and the lower end face of the lower sealing ring 64 abuts against the end face of the inserted end of the sleeve 3. The isolation ring 60 is sleeved on the outside of the lower valve core 5.

[0039] The step surface of the step hole 15 is a slope structure that is narrow at the top and wide at the bottom. A first positioning slope 171 is provided on the outer wall of the sleeve 3 at a position corresponding to the step surface of the step hole 15, and a second positioning slope 172 is provided on the inner wall of the sleeve 3 at a position corresponding to the first positioning slope 171. During installation, the sleeve 3 is inserted into the step hole 15, and the end surface of the inserted end of the sleeve 3 abuts against the lower end surface of the lower sealing ring 64. The first positioning slope 171 is fitted and abutted against the step surface of the step hole 15, and the second positioning slope 172 is fitted and abutted against the upper end surface of the connecting protrusion 52. A mounting groove 71 is provided in the female plug sleeve 7 at a position corresponding to the position connected to the connecting sleeve 1, and a mounting ring 54 is connected to one end of the push rod 50. The mounting ring 54 is sleeved and fixed in the mounting groove 71.

[0040] The operating principle of this utility model is as follows:

[0041] like Figures 1 to 4As shown, eight mounting holes 13 are provided. Before use, first, a ball 11 is placed in each mounting hole 13. The diameter of the ball 11 is adapted to the aperture of the mounting hole 13 so that the ball 11 can fit and move in the mounting hole 13 but cannot slide out of the mounting hole 13; then the return spring 18 is sleeved on the outside of the connecting sleeve 1, and one end of the return spring 18 abuts against the end face of the corresponding end of the mounting boss 10. Then, the locking sleeve 12 is sleeved on the outside of the connecting sleeve 1. At this time, the other end of the return spring 18 abuts against the inner end face of the connecting boss 121. In this way, the locking sleeve 12 can be squeezed on the outside of the connecting sleeve 1 to achieve elastic movement. Then, a back-retraction spring 102 is provided in the placement groove 101, and the outer wall of the back-retraction spring 102 emerges from the notch of the placement groove 101. The protruding end of the back-retraction spring 102 abuts against the outer end face of the connecting boss 121 for limiting.

[0042] In addition, one end of the first compression spring 61 is fixedly connected to the stop ring 402, and the other end is fixedly connected to the upper valve core 2. A first sealing ring 20 is embedded in the outer wall of the upper valve core 2, and the outer wall of the first sealing ring 20 is in contact with the hole wall of the placement hole 401; at the same time, the limiting slope 403 is in contact with the transition slope 21, and the end face of the non-connection end of the upper valve core 2 is flush with the end face of the hole opening at the corresponding end of the placement hole 401.

[0043] Then, if Figure 1 、 Figure 2 as well as Figures 5 to 10 As shown, an upper sealing ring 63, an isolating ring 60 and a lower sealing ring 64 are sequentially placed in the step hole 15, and the outer side walls of the upper sealing ring 63 and the lower sealing ring 64 are in contact with the hole wall of the small hole end of the step hole 15. Then the sleeve 3 is placed, and the upper end face of the upper sealing ring 63 is in contact with the bottom of the step hole 15, and the lower end face of the lower sealing ring 64 is in contact with the end face of the insertion end of the sleeve 3. The isolating ring 60 is sleeved on the outer side of the lower valve core 5, and then the second compression spring 62 is placed.

[0044] Then, the mounting ring 54 is sleeved and fixed in the mounting groove 71, and the push rod 50 is placed vertically. Then, the female plug sleeve 7 is screwed to the connecting sleeve 1, and one end of the second compression spring 62 is abutted against the lower end surface of the connecting protrusion 52, and the other end is abutted against the inner side wall of the female plug sleeve 7. At this time, the push rod 50 extends into the directional hole 53 through the second compression spring 62 and the outer side wall of the second sealing ring 51 is in contact with the inner side wall of the directional hole 53. At the same time, the second positioning inclined surface 172 is in contact with the upper end surface of the connecting protrusion 52, and the outer side wall of the second sealing ring 51 is in contact with the inner side wall of the directional hole 53.

[0045] When using, Figure 1 、 Figure 2 and Figure 11As shown, first turn the knob to lock the sleeve 12, and synchronously drive the locking block 17 to move from the horizontal section position of the guide groove 14 to the vertical section position, and then push the locking sleeve 12 along the axial direction of the return spring 18, that is, drive the connecting boss 121 to squeeze the return spring 18. As the locking sleeve 12 moves, the mounting hole 13 is exposed. At this time, the male plug sleeve 4 extends into the connecting sleeve 1, and the lower end surface of the limiting boss 40 first squeezes the eight balls 11 at the same time, so that each ball 11 moves outward at the same time in the corresponding mounting hole 13 and emerges from the outer opening of the corresponding mounting hole 13. The male plug sleeve 4 continues to extend, driving the lower valve core 5 to squeeze the second compression spring 62. At this time, the ejector rod 50 fixed in the female plug sleeve 7 forms a relative movement to push the upper valve core 2 upward. As the male plug sleeve 4 extends, the ejector rod 50 leaves the directional hole 53 and enters the placement hole 401, and the first compression spring 61 is squeezed. After the limiting boss 40 moves through the mounting hole 13, the locking sleeve 12 is released. Under the elastic force of the return spring 18, the locking sleeve 12 and the locking block 17 move synchronously along the vertical section of the guide groove 14 until the protruding end of the retaining spring 102 abuts against the outer end surface of the connecting boss 121 for limiting the position. During the movement, the connecting boss 121 abuts and pushes each ball 11 to move inward along the mounting hole 13 and emerge from the mounting hole 13. At the inner opening, at this time, the protruding end of the ball 11 extends into the limiting groove 42, and the upper end surface of the limiting boss 40 abuts against the lower end of the protruding end of the ball 11 to limit the position, thereby realizing the locking limit of the ball 11 on the male plug sleeve 4; finally, the locking sleeve 12 is rotated to move the locking block 17 from the vertical section position of the guide groove 14 to the horizontal section position of the guide groove 14, thereby preventing the locking sleeve 12 from moving axially due to force, thereby avoiding automatic unlocking.

[0046] At the same time, the end face of the inserted end of the male plug sleeve 4 abuts against the upper end face of the lower valve core 5, and the upper end face of the push rod 50 abuts against the lower end face of the upper valve core 2. In this way, the placement hole 401 is connected with the directional hole 53, and the medium can flow smoothly; since the lower end face of the male plug sleeve 4 always abuts against the upper end face of the lower valve core 5 during the movement, the medium will not leak out at this time.

[0047] When disassembling, first rotate the locking sleeve 12, and the locking block 17 moves along the horizontal section position to the vertical section position in the guide groove 14, then squeeze and move the locking sleeve 12, and the locking block 17 moves in the vertical section to expose the mounting hole 13 again, and pull out the male plug sleeve 4. Since the outer wall of the ball 11 is a circular curved surface, as the male plug sleeve 4 is pulled out, the upper end face of the limiting boss 40 abuts against the outer wall of the ball 11 and pushes the ball 11, and causes the ball 11 to leave the limiting groove 42 and move outward in the mounting hole to abut against the inner wall of the locking sleeve 12.

[0048] It should be noted that if Figure 2 and Figure 8As shown, since the locking sleeve 12 is provided with a tapered hole with a smaller inner side and a larger outer side at the outer end position corresponding to the connecting boss 121, when the ball 11 moves outward in the mounting hole 13, on the one hand, sufficient displacement distance is left for the ball 11 to avoid interference with the movement of the male plug sleeve 4; on the other hand, the setting of the tapered hole can also catch the ball 11 that slides out, and at the same time, the inclined hole wall of the tapered hole can also prevent the ball 11 from falling out.

[0049] Then, slowly loosen the connecting sleeve 1, and under the elastic force of the second compression spring 62, push the lower valve core 5 out of the male plug sleeve 4. At the same time, the first compression spring 61 also drives the upper valve core 2 to abut against the push rod 50. As the lower valve core 5 moves upward, the second sealing ring 51 returns to the directional hole 53, and the outer wall of the second sealing ring 51 abuts against the inner wall of the directional hole 53; at the same time, the outer wall of the first sealing ring 20 abuts against the hole wall of the placement hole 401. During the whole process, the upper valve core 2 and the push rod 50 remain in abutment.

[0050] Due to the fit and limitation of the transition slope 21 and the limiting slope 403, the upper valve core 2 will not emerge from the placement hole 401, that is, the first sealing ring 20 and the second sealing ring 51 are both in a built-in sealing state, and the sealing stability is good. In this way, when the upper valve core 2 is separated from the push rod 50, no medium residue or leakage will occur.

[0051] In addition, in order to facilitate the installation of the locking block 17, an opening is provided at the upper end of the horizontal section of the guide groove 14. At the same time, in order to ensure the stability of limiting and rotation, it is appropriate to symmetrically set two guide grooves 14 and correspondingly set two locking blocks 17.

[0052] In addition, in order to prevent the medium from leaking at the position of the female plug sleeve 7, a third sealing ring 72 is embedded at the root position of the threaded section of the connecting sleeve 1. When the female plug sleeve 7 is connected and screwed to the connecting sleeve 1, the end face of the screwed end of the female plug sleeve 7 abuts against the end face of the corresponding end of the mounting boss 10, and the inner side wall of the screwed end of the female plug sleeve 7 abuts against the outer side wall of the third sealing ring 72 to ensure the sealing of the connection.

Claims

1. A squeeze knob type locking connector, characterized in that: The invention comprises a connecting sleeve (1) embedded with a ball (11), a locking sleeve (12) elastically arranged on the outside of the connecting sleeve (1), an upper shell assembly clamped with the ball (11), and a lower shell assembly detachably connected to the connecting sleeve (1), wherein an upper valve core (2) is elastically arranged in the upper shell assembly, and a first sealing ring (20) is arranged on the upper valve core (2); an "L"-shaped guide groove (14) is arranged on the outside of the connecting sleeve (1), and a locking block (17) is arranged at a position corresponding to the guide groove (14) on the locking sleeve (12); a push rod (50) and an elastically arranged lower valve core (5) are arranged in the lower shell assembly, the lower valve core (5) is sleeved on the outer side wall of one side of the push rod (50), and a second sealing ring (20) is arranged at a sleeved position on the push rod (50). 51); when in use, the upper housing assembly squeezes the lower valve core (5) and makes the push rod (50) push out the upper valve core (2), so that the upper housing assembly and the lower housing assembly are connected, and the locking sleeve abuts the ball (11) to clamp the upper housing assembly to limit the position, and the locking sleeve (12) is rotated, and the locking block (17) is clamped and limited in the horizontal section position of the guide groove (14); when disassembling, the locking sleeve (12) is first rotated, and the locking block (17) moves to the vertical section position in the guide groove (14), and then the locking sleeve (12) is squeezed and moved, and the ball (11) leaves the position of clamping and limiting with the upper housing assembly. Under the action of elastic force, the upper valve core (2) pushes back the push rod (50), and the liquid outlet end of the upper housing assembly is sealed with the first sealing ring (20), and the second sealing ring (51) is sealed with the liquid outlet end of the lower housing assembly.

2. The squeeze knob type locking connector according to claim 1, characterized in that: A mounting boss (10) is provided on one side of the connecting sleeve (1), and a plurality of mounting holes (13) embedded with balls (11) are provided on the other side along the circumferential direction of the connecting sleeve (1). An "L"-shaped guide groove (14) is provided on the outer wall of the mounting boss (10), an anti-slip groove (122) is provided on the outer wall of the locking sleeve (12), a connecting boss (121) is provided along the circumferential direction on the inner wall of the locking sleeve (12), and a return spring (18) is provided on the outer sleeve of the connecting sleeve (1), one end of the return spring (18) abuts against the end face of the corresponding end of the mounting boss (10), and the other end abuts against the inner end face of the connecting boss (121), and the inner wall of the connecting boss (121) is fitted with the plurality of balls (11).

3. The squeeze knob type locking connector according to claim 2, wherein: A placement groove (101) is provided on the connecting sleeve (1) at a position corresponding to one side of the mounting hole (13), and a retaining spring (102) is provided in the placement groove (101). The outer wall of the retaining spring (102) protrudes from the notch of the placement groove (101), and the protruding end of the retaining spring (102) abuts against the outer end surface of the connecting boss (121) for limiting position.

4. The squeeze knob type locking connector according to claim 2, wherein: The upper shell assembly includes a male plug sleeve (4), a placement hole (401) is axially provided on the male plug sleeve (4), a directional boss (41) is provided at one end of the outer side of the male plug sleeve (4), and a limiting boss (40) is provided at the other end, and a limiting groove (42) is provided on the male plug sleeve (4) at a position corresponding to the directional boss (41) and the limiting boss (40); when installed, the male plug sleeve (4) is inserted into the connecting sleeve (1), the locking sleeve (12) is moved, and the inner side wall of the connecting boss (121) simultaneously pushes the inner side of the plurality of balls (11) out of the inner side opening of the mounting hole (13) and into the limiting groove (42), so that the balls (11) lock and limit the male plug sleeve (4).

5. The squeeze knob type locking connector according to claim 4, characterized in that: The upper shell assembly also includes a first compression spring (61) arranged in the placement hole (401), one end of the first compression spring (61) is fixedly connected to a stop ring (402) fixedly arranged in the placement hole (401), and the other end is fixedly connected to the upper valve core (2), and a first sealing ring (20) is embedded in the outer wall of the upper valve core (2), and the outer wall of the first sealing ring (20) is in contact with the hole wall of the placement hole (401).

6. The squeeze knob type locking connector according to claim 4, characterized in that: A transition slope (21) is provided around the outer wall of the upper valve core (2), and a limiting slope (403) is provided on the hole wall of the placement hole (401) at a position corresponding to the transition slope (21). The limiting slope (403) fits in contact with the transition slope (21), and the end face of the non-connecting end of the upper valve core (2) is flush with the end face of the hole opening corresponding to the placement hole (401).

7. The squeeze knob type locking connector according to claim 2, wherein: The lower housing assembly also includes a female plug sleeve (7) that is connected and screwed to the connecting sleeve (1), a stepped hole (15) is provided in the connecting sleeve (1), and a push rod (50) is fixed in the female plug sleeve (7) and extends into the small hole end of the stepped hole (15), the extended end of the push rod (50) is sleeved in the directional hole (53) of the lower valve core (5), and a second compression spring (62) is sleeved on the outer side of the push rod (50), and a connecting protrusion (52) is provided around one side of the lower valve core (5) in the circumferential direction, one end of the second compression spring (62) abuts against the lower end surface of the connecting protrusion (52), and the other end abuts against the inner side wall of the female plug sleeve (7); a second sealing ring (51) is embedded on the outer side wall of the push rod (50), and the outer side wall of the second sealing ring (51) abuts against the inner side wall of the directional hole (53).

8. The squeeze knob type locking connector according to claim 7, characterized in that: A through hole communicating with the mounting hole (13) is provided in the connecting sleeve (1), a transition hole (16) is provided between the through hole and the step hole (15), a sleeve (3) extending into the large hole end of the step hole (15) is sleeved on the outer side of the second compression spring (62), an upper sealing ring (63), an isolating ring (60) and a lower sealing ring (64) are stacked in sequence from top to bottom between the end face of the inserted end of the sleeve (3) and the bottom of the step hole (15), the upper end face of the upper sealing ring (63) abuts against the bottom of the step hole (15), the lower end face of the lower sealing ring (64) abuts against the end face of the inserted end of the sleeve (3), and the isolating ring (60) is sleeved on the outer side of the lower valve core (5).

9. The squeeze knob type locking connector according to claim 8, characterized in that: The step surface of the step hole (15) is a sloped structure that is narrow at the top and wide at the bottom. A first positioning slope (171) is provided on the outer wall of the sleeve (3) at a position corresponding to the step surface of the step hole (15), and a second positioning slope (172) is provided on the inner wall of the sleeve (3) at a position corresponding to the first positioning slope (171). During installation, the sleeve (3) is inserted into the step hole (15), the end surface of the sleeve (3) inserted into the step hole (15) abuts against the lower end surface of the lower sealing ring (64), the first positioning slope (171) abuts against the step surface of the step hole (15), and the second positioning slope (172) abuts against the upper end surface of the connecting protrusion (52).

10. The squeeze knob type locking connector according to claim 8, characterized in that: A mounting groove (71) is provided in the female plug sleeve (7) at a position corresponding to the position communicating with the connecting sleeve (1), and a mounting ring (54) is connected to one end of the push rod (50), and the mounting ring (54) is sleeved and fixed in the mounting groove (71).

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