Buckle type locking connector

Abstract

The utility model discloses a buckle type locking connector which comprises a locking block, a connecting sleeve, an upper shell assembly, a locking clamping sleeve and a lower shell assembly, an upper valve element is elastically arranged in the upper shell assembly, a first sealing ring is arranged on the upper valve element, an ejector rod and a lower valve element are arranged in the lower shell assembly, and a second sealing ring is arranged on the lower valve element. The lower valve element is connected to the outer side wall of one side of the ejector rod in a sleeved mode, and a second sealing ring is arranged on the ejector rod. The upper shell assembly extrudes the lower shell assembly, the ejector rod abuts against the upper valve element, the locking block is connected with the upper shell assembly in a clamped mode for fixing and limiting, then the locking clamping sleeve limits the locking block, the lower shell assembly and the upper shell assembly are connected and communicated, meanwhile, no gap is reserved between the ejector rod and the upper valve element in an abutting mode, and the locking block can be prevented from being automatically unlocked; during disassembly, the locking clamping sleeve is loosened, the locking block is moved, the upper shell assembly is automatically ejected, meanwhile, the sealing ring synchronously seals the communication position, and the purpose of no leakage during disassembly is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of equipment cooling pipeline fittings, and particularly relates to a snap - type locking connector. Background Art

[0002] At present, the quick - connection device widely used in the liquid - cooling pipeline connection of big - data centers is composed of a male plug and a female socket. During actual use, after the male end and the female end are plugged and connected, due to factors such as misoperation, external vibration, and pulse pressure, there is a risk that the locking mechanism will be automatically unlocked. As a result, the pipeline may be accidentally disconnected, and then the heat - generating components cannot be effectively cooled, leading to functional attenuation, damage, or even spontaneous combustion. Content of the Utility Model

[0003] Aiming at the deficiencies of the above - mentioned prior art, the technical problem to be solved by the utility model is to provide a snap - type locking connector that can ensure locking stability, prevent automatic unlocking, and prevent medium leakage during disassembly.

[0004] To solve the above - mentioned technical problem, a technical solution adopted by the utility model is: providing a snap - type locking connector, which includes a connecting sleeve with a locking block movably arranged therein, an upper housing assembly clamped with the locking block, a locking collar adjustably sleeved outside the connecting sleeve and abutted against and limited to the locking block, and a lower housing assembly detachably connected to the connecting sleeve. An upper valve core is elastically arranged in the upper housing assembly, a first sealing ring is arranged on the upper valve core, a push rod and an elastically arranged lower valve core are arranged in the lower housing assembly. The lower valve core is sleeved on the outer side wall of one side of the push rod, and a second sealing ring is arranged at the corresponding sleeved position on the push rod. During use, the upper housing assembly presses the lower valve core, and the push rod pushes out the upper valve core, so that the upper housing assembly and the lower housing assembly are communicated, and the upper housing assembly is limited by the locking block being clamped. Then, the locking collar is moved and adjusted outside the connecting sleeve and abutted against and limited to the locking block. When disassembling, the locking collar is adjusted and moved away, the locking block is pressed to release the clamping position. Under the action of elastic force, the upper valve core pushes back the push rod, the liquid outlet end of the upper housing assembly fits and seals with the first sealing ring, and the second sealing ring fits and seals with the liquid outlet end of the lower housing assembly.

[0005] With the above structure, the upper housing assembly presses the lower valve core, the ejector rod pushes the upper valve core upward, the upper housing assembly and the lower housing assembly are made to communicate, and the upper housing assembly is locked and limited by the locking block. When the locking sleeve is pushed to be clamped on the connecting sleeve and abuts against the limiting locking block at the same time, the moving clearance of the locking block is eliminated and the rotation of itself can be limited, which can prevent the locking block from being automatically unlocked due to external force. When disassembling, the locking sleeve is pushed out, and then the locking block is pushed out. The upper housing assembly is no longer locked and limited. Under the elastic force of the elastic connecting piece, the upper valve core pushes the ejector rod back. During this process, the upper valve core and the ejector rod always maintain an abutting state, and there is no gap for medium residue. At the same time, the liquid outlet end of the upper housing assembly fits and seals with the first sealing ring, and the second sealing ring fits and seals with the liquid outlet end of the lower housing assembly. That is, the upper housing assembly and the lower housing assembly are separated in the form of pressing a button, and when the upper housing assembly is pulled out from the connecting sleeve, there will be no medium leakage. The structure is simple and compact, and the operation is convenient.

[0006] To simplify the structure and facilitate installation, preferably, a connecting boss is provided on one side of the connecting sleeve, and a fixed boss for abutting and limiting the locking sleeve is provided on the other side. A through hole communicating with the connecting sleeve is provided on the connecting boss. A locking block is provided in the through hole. An opening groove is provided on the connecting boss at a position corresponding to the locking block. A positioning groove is provided on the connecting boss at the lower end of the notch of the opening groove. A relief hole communicating with the through hole is provided on the locking block. A relief inclined surface is provided on one side of the hole opening of the relief hole. An extension section extending out of the connecting boss is provided on one side of the locking block. Two positioning bosses are symmetrically provided on the inner side wall of the extension section. A first placement groove is provided on the extension section at a position corresponding to the two positioning bosses. A first guide post is provided in the first placement groove. A return spring sleeved outside the first guide post is provided in the first placement groove. One end of the return spring abuts against the bottom of the first placement groove, and the other end extends out and abuts against the corresponding position on the connecting sleeve.

[0007] In order to facilitate the movement and limitation of the locking sleeve, as a preference, a locking boss is provided at a position corresponding to the positioning groove on one side of the locking sleeve, and an open through groove is provided on the other side. A stop boss is adapted to be provided at a position corresponding to the position of the positioning boss at the notch position of the open through groove. The inner side wall of each stop boss is vertically provided with a "V"-shaped through groove that penetrates the inner side wall of the locking sleeve, and the outer side wall of the stop boss at the corresponding end is in abutment with the outer side wall of the positioning boss; an opening is also provided on the outer side wall of the locking sleeve, a paddle is integrally connected to the opening, and a limiting protrusion is provided on the inner side wall of the paddle. The left and right sides of the paddle are provided with a limit block. A first strip groove is formed between the right two ends and the hole wall of the opening, a second strip groove is formed between the non-connecting end of the paddle and the hole wall of the opening, and the two ends of the second strip groove are respectively connected to the two first strip grooves; a first protrusion that fits with the inner wall of the locking sleeve is provided on the outer wall of the connecting sleeve, and a second protrusion is provided at the position corresponding to the second strip groove, the lower end surface of the second protrusion is fitted and abutted with the upper end surface of the limiting protrusion, and a third protrusion is provided at the position corresponding to the stop boss on the connecting sleeve, and the third protrusion extends into the "V"-shaped through groove for limitation to prevent the locking sleeve from rotating and deviating on the connecting sleeve.

[0008] In order to simplify the connection structure with the reset spring, preferably, a second placement groove is provided at a position corresponding to the open through groove on the outer wall of the connecting sleeve, and a second guide column is provided in the second placement groove. The protruding end of the reset spring is sleeved on the outside of the second guide column and abuts against the bottom of the second placement groove.

[0009] In order to improve the stability of the connection limit and ensure the synchronization of unlocking and sealing of the first sealing ring, preferably, the upper shell assembly includes a male plug sleeve, a placement hole is axially penetrated on the male plug sleeve, 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 directional boss and the limiting boss; a first compression spring is provided in the placement hole, one end of the first compression spring is fixedly connected to a 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 side wall of the upper valve core, and the outer side wall of the first sealing ring is in abutment with the hole wall of the placement hole; during installation, the male plug sleeve extends into the connecting sleeve and passes through the locking block through the clearance hole, and the upper end face of the limiting boss is abutted with the lower end face of the locking block to achieve locking and limiting of the male plug sleeve by the locking block.

[0010] In order to facilitate the limiting of the upper valve core and avoid exposure of the first sealing ring to affect the sealing effect, preferably, a transition slope is provided around the outer wall of the upper valve core, and a limiting slope is provided on the hole wall of the placement hole at a position corresponding to the transition slope. The limiting slope fits with the transition slope and makes the end face of the non-connecting end of the upper valve core 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 which is threadedly connected to the connecting sleeve, a step hole is provided in the connecting sleeve, and a push rod extending into the small hole end of the step hole is fixed in the female plug sleeve, the extended end of the push rod is sleeved in the directional hole of the lower valve core, and a mounting groove is provided in the female plug sleeve at a position corresponding to the position connected with the connecting sleeve, a mounting ring is connected to one end of the push rod, and the mounting ring is sleeved and fixed in the mounting groove; a second compression spring is also sleeved on the outside of the push rod, and a connecting protrusion is circumferentially arranged on one side of the lower valve core, one end of the second compression spring abuts against the lower end face of the connecting protrusion, and the other end abuts against the inner side wall of the mounting ring; a second sealing ring is embedded on 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, preferably, a transition hole is provided between the through hole and the step hole, and a sleeve is sleeved 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, and the outer end face of the sleeve abuts against the inner side wall of the mounting ring.

[0013] In order to facilitate the limiting of the sleeve and simplify the structure, preferably, the step surface of the step hole is a slope structure which 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; during installation, the sleeve is extended into the step hole, the end face of the extended 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 the movement of the locking sleeve, preferably, the second protrusion and the limiting protrusion are provided with an inclined surface section for facilitating the movement of the locking sleeve.

[0015] Beneficial effects: The utility model arranges an upper shell assembly to squeeze the lower shell assembly, and uses a push rod to abut against the upper valve core, a locking block is clamped into the upper shell assembly to fix the limit, and then the locking block is limited by a locking sleeve. While realizing the connection and penetration between the lower shell assembly and the upper shell assembly, there is no gap between the push rod and the upper valve core, and the locking block can be prevented from being automatically unlocked; when disassembling, the locking sleeve is loosened, the locking block is moved, and the upper shell assembly is automatically popped out, and at the same time, the sealing ring is synchronously used to seal the connecting position, so as to achieve the purpose of disassembly without leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are provided to further understand the present application and form a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0017] Figure 1 is an exploded view of the present utility model.

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

[0019] Figure 3 is a schematic diagram of the structure of the male plug sleeve.

[0020] Figure 4 is a schematic diagram of the structure of the upper valve core.

[0021] Figure 5 is a schematic diagram of the installation structure of the second guide post and the connection sleeve.

[0022] Figure 6 is a schematic diagram of the internal structure of the connection sleeve.

[0023] Figure 7 is a schematic diagram of the structure of the locking block.

[0024] Figure 8 is a schematic diagram of the structure of the locking collar.

[0025] Figure 9 is a schematic diagram of the structure of the open through groove and the stop boss.

[0026] Figure 10 is a schematic diagram of the structure of the lower valve core.

[0027] Figure 11 is a three-dimensional schematic diagram of the installation ring and the ejector rod.

[0028] Figure 12 is a schematic diagram of the use state of the present utility model.

[0029] Figure 13 is a three-dimensional schematic diagram of the assembled structure of the present utility model.

[0030] Figure 14 is a schematic diagram of the installation structure of the third protrusion and the V-shaped through groove.

[0031] The meanings of the reference numerals in the drawings are as follows:

[0032] Connecting sleeve - 1; Connecting boss - 10; Fixed boss - 100; Open slot - 101; Positioning slot - 102; Support bump - 103; Locking block - 11; Relief hole - 111; Relief inclined plane - 112; Extension section - 113; Positioning boss - 114; First placement groove - 115; Second placement groove - 116; Anti - retreat bump - 117;

[0033] Locking ferrule - 12; Open through - slot - 120; Positioning boss - 121; Stop boss - 122; Paddle - 123; "V" - shaped through - slot - 124; First guide post - 131; Second guide post - 132; Return spring - 14; First strip - shaped slot - 141; Second strip - shaped slot - 142; First bump - 143; Second bump - 144; Third bump - 145; Step hole - 15; Transition hole - 16; Limit bump - 17; First positioning inclined plane - 171; Second positioning inclined plane - 172; Inclined plane section - 18;

[0034] Upper valve core - 2; First sealing ring - 20; Transition inclined plane - 21; Sleeve - 3;

[0035] Male plug sleeve - 4; Limit boss - 40; Placement hole - 401; Anti - retreat ring - 402; Limit inclined plane - 403; Orientation boss - 41; Limit slot - 42; Lower valve core - 5; Thumb - screw - 50; Second sealing ring - 51; Connecting bump - 52; Orientation hole - 53; Mounting ring - 54;

[0036] 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. Specific implementation mode

[0037] Consisting of Figures 1 to 9As shown in the figure, the utility model includes a connecting sleeve 1 with a locking block 11 movably arranged therein, an upper shell assembly clamped with the locking block 11, a locking collar 12 adjustably sleeved outside the connecting sleeve 1 and abutting against and limiting the locking block 11, and a lower shell assembly detachably connected to the connecting sleeve 1. An upper valve core 2 is elastically arranged in the upper shell assembly, a first sealing ring 20 is arranged on the upper valve core 2, 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 51 is arranged at the corresponding sleeved position on the push rod 50. During use, the upper shell assembly presses the lower valve core 5, and the push rod 50 pushes out the upper valve core 2, so that the upper shell assembly and the lower shell assembly are communicated, and the upper shell assembly is limited by the locking block 11 in a clamped manner. Then, the locking collar 12 is moved and adjusted outside the connecting sleeve 1 and abuts against and limits the locking block 11. When disassembling, the locking collar 12 is adjusted and moved away, and the locking block 11 is pressed to release the clamped position. Under the action of the elastic force, the upper valve core 2 pushes back the push rod 50, and the liquid outlet end of the upper shell assembly fits and seals with the first sealing ring 20, and the second sealing ring 51 fits and seals with the liquid outlet end of the lower shell assembly.

[0038] Specifically, a connecting boss 10 is arranged on one side of the connecting sleeve 1, a fixing boss 100 for abutting against and limiting the locking collar 12 is arranged on the other side. A through hole communicating with the connecting sleeve 1 is arranged on the connecting boss 10, a locking block 11 is arranged in the through hole, an opening groove 101 is arranged at the position corresponding to the locking block 11 on the connecting boss 10, a positioning groove 102 is arranged at the lower end of the notch of the opening groove 101 on the connecting boss 10, a relief hole 111 communicating with the through hole is arranged on the locking block 11, and a relief inclined surface 112 is arranged on one side of the orifice of the relief hole 111.

[0039] One side of the locking block 11 is provided with an extension section 113 extending out of the connecting boss 10. Two positioning bosses 114 are symmetrically arranged on the inner side wall of the extension section 113. A first placement groove 115 is arranged at the position corresponding to the two positioning bosses 114 on the extension section 113. A first guide post 131 is arranged in the first placement groove 115. A return spring 14 sleeved outside the first guide post 131 is arranged in the first placement groove 115. One end of the return spring 14 abuts against the bottom of the first placement groove 115; the other end extends and points to the connecting sleeve 1. A second placement groove 116 is arranged on the outer side wall of the connecting sleeve 1 at the position corresponding to the opening through groove 120. A second guide post 132 is arranged in the second placement groove 116. The extending end of the return spring 14 is sleeved outside the second guide post 132 and abuts against the bottom of the second placement groove 116.

[0040] At the same time, a locking boss 121 is provided at a position corresponding to the positioning groove 102 on one side of the locking sleeve 12, and an open through groove 120 is provided on the other side. A stop boss 122 is adapted to be provided at the position of the positioning boss 114 at the notch position of the open through groove 120. The inner side wall of each stop boss 122 is vertically provided with a "V"-shaped through groove 124 that penetrates the inner side wall of the locking sleeve 12, and the outer side wall of the stop boss 122 at the corresponding end is in abutment with the outer side wall of the positioning boss 114; an opening is also provided on the outer side wall of the locking sleeve 12, and a paddle 123 is integrally connected to the opening, and a limiting protrusion 17 is provided on the inner side wall of the paddle 123, and the left and right ends of the paddle 123 are in contact with the hole wall of the opening. A first strip groove 141 is formed between each of the two connecting ends, and a second strip groove 142 is formed between the non-connecting end of the paddle 123 and the hole wall of the opening, and the two ends of the second strip groove 142 are respectively connected to the two first strip grooves 141; a first protrusion 143 that fits with the inner wall of the locking sleeve 12 is provided on the outer wall of the connecting sleeve 1, and a second protrusion 144 is provided at the position corresponding to the second strip groove 142, and the lower end surface of the second protrusion 144 is in contact with the upper end surface of the limiting protrusion 17, and a third protrusion 145 is provided at the position corresponding to the stop boss 122 on the connecting sleeve 1, and the third protrusion 145 extends into the "V"-shaped through groove 124 for limiting, so as to prevent the locking sleeve 12 from rotating and deviating on the connecting sleeve 1.

[0041] In addition, a second placement groove 116 is provided at a position corresponding to the open through groove 120 on the outer wall of the connecting sleeve 1, and a second guide column 132 is provided in the second placement groove 116. The extended end of the reset spring 14 is sleeved on the outside of the second guide column 132 and abuts against the bottom of the second placement groove 116.

[0042] 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 directional boss 41 and the limiting boss 40; a first compression spring 61 is provided 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 abutment with the hole wall of the placement hole 401; during installation, the male plug sleeve 4 extends into the connecting sleeve 1 and passes through the locking block 11 through the clearance hole 111, and the upper end surface of the limiting boss 40 abuts against the lower end surface of the locking block 11 to achieve locking and limiting of the male plug sleeve 4 by the locking block 11.

[0043] A transition inclined surface 21 is wound around the outer side wall of the upper valve core 2. A limiting inclined surface 403 is provided on the hole wall of the placement hole 401 at a position corresponding to the transition inclined surface 21. The limiting inclined surface 403 is in fit with the transition inclined surface 21, and the end surface of the non-connection end of the upper valve core 2 is flush with the orifice end surface of the corresponding end of the placement hole 401.

[0044] The lower housing assembly further includes a female plug sleeve 7 connected to the connecting sleeve 1 in a communicating and screwing manner. A stepped hole 15 is provided in the connecting sleeve 1. A push rod 50 extending into the small hole end of the stepped hole 15 is fixedly provided in the female plug sleeve 7. The extending end of the push rod 50 is sleeved in the orientation hole 53 of the lower valve core 5. An installation groove 71 is provided in the female plug sleeve 7 at a position corresponding to the position communicating with the connecting sleeve 1. An installation ring 54 is connected to one end of the push rod 50. The installation ring 54 is sleeved and fixed in the installation groove 71. A second compression spring 62 is further sleeved outside the push rod 50. A connecting convex block 52 is wound around the circumference of 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 convex block 52, and the other end abuts against the inner side wall of the installation ring 54. A second sealing ring 51 is embedded on the outer side wall of the push rod 50. The outer side wall of the second sealing ring 51 is in fit and abutment with the inner side wall of the orientation hole 53.

[0045] A transition hole 16 is communicated between the through hole and the stepped hole 15. A sleeve 3 extending into the large hole end of the stepped hole 15 is sleeved outside the second compression spring 62. 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 surface of the extending end of the sleeve 3 and the bottom of the stepped hole 15. The upper end surface of the upper sealing ring 63 abuts against the bottom of the stepped hole 15. The lower end surface of the lower sealing ring 64 abuts against the end surface of the extending end of the sleeve 3. The isolation ring 60 is sleeved outside the lower valve core 5. The outer side end surface of the sleeve 3 abuts against the inner side wall of the installation ring 54.

[0046] The stepped surface of the stepped hole 15 is an inclined surface structure that is narrow at the top and wide at the bottom. A first positioning inclined surface 171 is provided on the outer side wall of the sleeve 3 at a position corresponding to the stepped surface of the stepped hole 15. A second positioning inclined surface 172 is provided on the inner side wall of the sleeve 3 at a position corresponding to the first positioning inclined surface 171. During installation, the sleeve 3 extends into the stepped hole 15. The end surface of the extending end of the sleeve 3 abuts against the lower end surface of the lower sealing ring 64. The first positioning inclined surface 171 is in fit and abutment with the stepped surface of the stepped hole 15 and the second positioning inclined surface 172 is in fit and abutment with the upper end surface of the connecting convex block 52.

[0047] Among them, inclined surface segments 18 facilitating the movement and yielding of the locking collar 12 are provided on both the second convex block 144 and the limiting convex block 17.

[0048] The working principle of the present utility model is as follows:

[0049] As Figures 1 to 4 、 Figure 9 and Figure 14 shown, before use, first, use a tool to expand the opening through groove 120 on the locking collar 12, that is, increase the inner diameter of the locking collar 12, and sleeved the locking collar 12 on the outside of the connecting sleeve 1 from the lower end of the connecting sleeve 1 from bottom to top. Since the locking collar 12 is made of nylon 66 material, when the sleeving is completed, the notch of the opening through groove 120 rebounds and restores to the width dimension before expansion. At this time, the outer wall of the first convex block 143 fits with the inner wall of the locking collar 12, the third convex block 145 extends into the "V"-shaped through groove 124, the outer wall of the third convex block 145 fits with the groove wall of the "V"-shaped through groove 124, and the lower end of the locking collar 12 abuts against and is limited by the fixed boss 100. At the same time, the lower end surface of the second convex block 144 fits and abuts against the upper end surface of the limiting convex block 17, and the second placement groove 116 is exposed at the position of the opening through groove 120.

[0050] Then, put the locking block 11 into the through hole of the connecting boss 10, and make the plane where the outer wall of the notch 101 is located flush with the plane where the outer wall of the locking block 11 is located. At the same time, one end of the return spring 14 abuts against the bottom of the first placement groove 115, and the other end abuts against the bottom of the second placement groove 116. In this way, the locking block 11 is movably arranged on the connecting sleeve 1.

[0051] In addition, in the male plug sleeve 4, one end of the first compression spring 61 is fixedly connected to the anti-return ring 402, and the other end is fixedly connected to the upper valve core 2. A first sealing ring 20 is embedded on the outer wall of the upper valve core 2, and the outer wall of the first sealing ring 20 fits and abuts against the hole wall of the placement hole 401; at the same time, the limiting inclined surface 403 fits with the transition inclined surface 21, and the end surface of the non-connecting end of the upper valve core 2 is flush with the hole end surface of the corresponding end of the placement hole 401.

[0052] Next, as Figure 1 、 Figure 2 and Figures 5 to 11 shown, the upper sealing ring 63, the isolation ring 60 and the lower sealing ring 64 are sequentially placed in the stepped hole 15. The outer walls of the upper sealing ring 63 and the lower sealing ring 64 both abut against the hole wall of the small hole end of the stepped hole 15. Then, put the sleeve 3, and make the upper end surface of the upper sealing ring 63 abut against the bottom of the stepped hole 15. The lower end surface of the lower sealing ring 64 abuts against the end surface of the extending end of the sleeve 3. The isolation ring 60 is sleeved on the outside of the lower valve core 5, and then the second compression spring 62 is placed.

[0053] Then, the mounting ring 54 is sleeved and fixed in the mounting groove 71, and the ejector rod 50 is placed vertically. Immediately afterwards, the female plug sleeve 7 is connected and sleeved on the connecting sleeve 1, and one end of the second compression spring 62 abuts against the lower end surface of the connecting lug 52, and the other end abuts against the inner side wall of the mounting ring 54. At the same time, the outer end surface of the sleeve 3 abuts against the inner side wall of the mounting ring 54. At this time, the ejector rod 50 extends into the orientation hole 53 through the second compression spring 62, and the outer side wall of the second sealing ring 51 fits and abuts against the inner side wall of the orientation hole 53. At the same time, the second positioning inclined surface 172 fits and abuts against the upper end surface of the connecting lug 52, and the outer side wall of the second sealing ring 51 fits and abuts against the inner side wall of the orientation hole 53.

[0054] During use, as Figure 1 , Figure 2 and Figures 12 to 14 shown, the male plug sleeve 4 extends into the connecting boss 10. The lower end surface of the limiting boss 40 first presses against the relieving inclined surface 112 at the orifice of the relieving hole 111, so that the locking block 11 is squeezed out of the opening groove 101. The male plug sleeve 4 continues to extend, driving the lower spool 5 to squeeze the second compression spring 62. At this time, the ejector rod 50 fixedly arranged in the female plug sleeve 7 forms a relative movement to push the upper spool 2 upwards. As the male plug sleeve 4 extends, the ejector rod 50 leaves the orientation hole 53 and enters the placement hole 401, and the first compression spring 61 is squeezed. After the limiting boss 40 moves past the relieving inclined surface 112, under the elastic force of the return spring 14, the locking block 11 is driven to move back. The position of the locking block 11 on the side corresponding to the relieving inclined surface 112 extends into the limiting groove 42, and the upper end surface of the limiting boss 40 abuts against the lower end surface of the locking block 11 for limiting, realizing the locking and limiting of the male plug sleeve 4 by the locking block 11. At the same time, the end surface of the extending end of the male plug sleeve 4 abuts against the upper end surface of the lower spool 5, and the upper end surface of the ejector rod 50 abuts against the lower end surface of the upper spool 2.

[0055] Then, the locking collar 12 is pushed towards the connecting boss 10. The third convex block 145 slides in the "V"-shaped through groove 124. The limiting convex block 17 moves to the upper end of the second convex block 144 through the inclined surface section 18. The second convex block 144 extends into the second strip-shaped groove 142 and abuts against the lower end surface of the limiting convex block 17. The positioning convex platform 121 moves into the positioning groove 102. At the same time, the outer side wall of the stop convex platform 122 fits and abuts against the outer side wall of the positioning convex platform 114. In this way, the extension section 111 and the connecting sleeve 1 are limited and fixed. Under the action of an external force, the extension section 111 cannot drive the locking block 11 to move, which can prevent the locking block 11 from automatically unlocking the male plug sleeve 4. At the same time, the placement hole 401 communicates with the orientation hole 53, and the medium can flow smoothly. Since the lower end surface of the male plug sleeve 4 always abuts against the upper end surface of the lower spool 5 during the movement process, the medium will not leak out at this time.

[0056] During disassembly, pull the locking ferrule 12. The third convex block 145 slides within the "V"-shaped through groove 124. The limit convex block 17 moves to the lower end of the second convex block 144 via the inclined surface section 18. The lower end surface of the second convex block 144 abuts against the upper end surface of the limit convex block 17. The positioning boss 121 moves out of the positioning groove 102, and the stop boss 122 leaves the abutted positioning boss 114. The locking ferrule 12 abuts against and is limited by the fixed boss 100. In this way, the locking ferrule 12 is limited by the two third convex blocks 145 and will not rotate outside the connecting sleeve 1, facilitating quick movement, orientation, and clamping connection. Then, push the locking block 11 so that the limit convex block 40 is completely exposed at the position of the relief hole 111. Subsequently, slowly loosen the connecting sleeve 1. Under the elastic force of the second compression spring 62, the lower valve core 5 is pushed to eject 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 ejector rod 50. As the lower valve core 5 moves upward, the second sealing ring 51 returns to the orientation hole 53, and the outer wall of the second sealing ring 51 abuts against the inner wall of the orientation 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. Throughout the process, the upper valve core 2 and the ejector rod 50 remain in an abutting state.

[0057] Due to the fitting and limiting of the transition inclined surface 21 and the limit inclined surface 403, the upper valve core 2 will not protrude from the placement hole 401. That is, both the first sealing ring 20 and the second sealing ring 51 are in an internal sealing state, with good sealing stability. In this way, when the upper valve core 2 is separated from the ejector rod 50, there will be no situation of medium residue and external leakage.

[0058] It should be noted that, as Figure 7 and Figure 13 shown, during the above-mentioned use process, in order to better prevent the locking block 11 from falling off, two anti-withdrawal convex blocks 117 integrally formed are symmetrically arranged on the left and right sides of the locking block 11. The two anti-withdrawal convex blocks 117 respectively abut against and are limited by the groove walls at the corresponding ends of the opening groove 101. At the same time, in order to facilitate the installation of the anti-withdrawal convex blocks 117 in place, in addition to the arc surface adaptively provided on the outer wall of the anti-withdrawal convex blocks 117, the material used is nylon 66, which meets the requirements of moving and being compressed to make way during installation.

[0059] 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 of the threaded section of the connecting sleeve 1. When the female plug sleeve 7 is connected and screwed onto the connecting sleeve 1, the end surface of the screwed end of the female plug sleeve 7 abuts against the corresponding end surface of the fixed boss 100, and the inner wall of the screwed end of the female plug sleeve 7 abuts against the outer wall of the third sealing ring 72 to achieve the sealing of the connection during use.

[0060] Since the position of the ejector rod 50 needs to be in contact with the medium, and the ejector rod 50 is usually integrally injection-molded with the female plug sleeve 7, the nylon 66 material used in its processing has high water absorption. The ejector rod 50 will expand after absorbing water, directly causing movement interference during use and shortening the service life. Therefore, in this embodiment, the ejector rod 50 and the female plug sleeve 7 are produced separately, and the ejector rod 50 is made of PPS material (low water absorption rate). The assembly structure is simple. In this way, without affecting the assembly difficulty, not only the production structure of the product is simplified, but also the service life of the ejector rod 50 is guaranteed.

[0061] In addition, regarding the number of the first convex block 143, the second convex block 144, and the third convex block 145, the illustrated number in this embodiment is not unique, and it should be based on the specific product specifications and evenly set as appropriate.

Claims

1. A snap - type locking connector, characterized in that: It includes a connecting sleeve (1) with a locking block (11) provided therein for an activity, an upper housing assembly clamped with the locking block (11), a locking collar (12) adjustably sleeved outside the connecting sleeve (1) and abutted against and limited by the locking block (11), and a lower housing assembly detachably connected to the connecting sleeve (1). An upper valve core (2) is elastically provided in the upper housing assembly, a first sealing ring (20) is provided on the upper valve core (2), a push rod (50) and an elastically arranged lower valve core (5) are provided in the lower housing 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 (51) is provided at the corresponding sleeved position on the push rod (50). During use, the upper housing assembly presses 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 communicated, and the upper housing assembly is limited by the locking block (11) in a clamped manner. Then, the locking collar (12) is moved and adjusted outside the connecting sleeve (1) and abutted against and limited the locking block (11). When disassembling, the locking collar (12) is adjusted and moved away, the locking block (11) is pressed to release the clamped position. Under the action of the elastic force, the upper valve core (2) pushes back the push rod (50), the liquid outlet end of the upper housing assembly fits and seals with the first sealing ring (20), and the second sealing ring (51) fits and seals with the liquid outlet end of the lower housing assembly.

2. The snap - lock connector according to claim 1, characterized in that: A connecting boss (10) is provided on one side of the connecting sleeve (1), and a fixing boss (100) for abutting against and limiting the locking collar (12) is provided on the other side. A through hole communicating with the connecting sleeve (1) is provided on the connecting boss (10), a locking block (11) is provided in the through hole, an opening groove (101) is provided at the position corresponding to the locking block (11) on the connecting boss (10), a positioning groove (102) is provided at the lower end of the notch of the opening groove (101) on the connecting boss (10). A relief hole (111) communicating with the through hole is provided on the locking block (11), and a relief inclined surface (112) is provided on one side of the orifice of the relief hole (111). An extension section (113) extending out of the connecting boss (10) is provided on one side of the locking block (11). Two positioning bosses (114) are symmetrically provided on the inner side wall of the extension section (113). A first placement groove (115) is provided at the position corresponding to the two positioning bosses (114) on the extension section (113). A first guide post (131) is provided in the first placement groove (115), and a return spring (14) sleeved outside the first guide post (131) is provided in the first placement groove (115). One end of the return spring (14) abuts against the bottom of the first placement groove (115), and the other end extends out and abuts against the corresponding position on the connecting sleeve (1).

3. The snap - type locking connector according to claim 2, characterized in that: On one side of the locking collar (12) corresponding to the position of the positioning groove (102), a positioning boss (121) is provided, and an opening through groove (120) is provided on the other side. At the position of the notch of the opening through groove (120) corresponding to the position of the positioning boss (114), a stop boss (122) is adaptively provided. The inner side wall of each stop boss (122) is vertically provided with a "V"-shaped through groove (124) penetrating the inner side wall of the locking collar (12). The outer side wall of the corresponding end of the stop boss (122) is in fit and abutment with the outer side wall of the positioning boss (114); an opening is provided on the outer side wall of the locking collar (12), and a dial (123) is integrally connected in the opening. A limiting convex block (17) is provided on the inner side wall of the dial (123). A first strip-shaped groove (141) is formed between the left and right ends of the dial (123) and the hole wall of the opening respectively. A second strip-shaped groove (142) is formed between the non-connected end of the dial (123) and the hole wall of the opening. The two ends of the second strip-shaped groove (142) are respectively communicated with the two first strip-shaped grooves (141); a first convex block (143) that fits with the inner wall of the locking collar (12) is provided on the outer side wall of the connecting sleeve (1), and a second convex block (144) is provided at the position corresponding to the second strip-shaped groove (142). The lower end surface of the second convex block (144) is in fit and abutment with the upper end surface of the limiting convex block (17). Third convex blocks (145) are provided on the connecting sleeve (1) at the positions corresponding to the stop bosses (122). The third convex blocks (145) extend into the "V"-shaped through groove (124) for limiting to prevent the locking collar (12) from rotating and shifting on the connecting sleeve (1).

4. The snap - type locking connector according to claim 3, wherein: A second placement groove (116) is provided on the outer side wall of the connecting sleeve (1) at the position corresponding to the opening through groove (120). A second guide post (132) is provided in the second placement groove (116). The extended end of the return spring (14) is sleeved on the outer side of the second guide post (132) and abuts against the bottom of the second placement groove (116).

5. The snap - type locking connector according to claim 2, wherein: The upper housing assembly includes a male plug sleeve (4). An axially penetrating placement hole (401) is provided in the male plug sleeve (4). A directional boss (41) is provided at one end outside the male plug sleeve (4), and a limiting boss (40) is provided at the other end. A limiting groove (42) is provided at a position corresponding to the position between the directional boss (41) and the limiting boss (40) on the male plug sleeve (4); A first compression spring (61) is provided in the placement hole (401). One end of the first compression spring (61) is fixedly connected to a retaining ring (402) fixed in the placement hole (401), and the other end is fixedly connected to the upper valve core (2). A first sealing ring (20) is embedded on the outer side wall of the upper valve core (2), and the outer side wall of the first sealing ring (20) is in close contact with the hole wall of the placement hole (401); During installation, the male plug sleeve (4) extends into the connecting sleeve (1) and passes through the locking block (11) through the relief hole (111). The upper end surface of the limiting boss (40) is in contact with the lower end surface of the locking block (11) for limiting, realizing the locking and limiting of the locking block (11) on the male plug sleeve (4).

6. The snap - type locking connector according to claim 5, characterized in that: A section of transition inclined surface (21) is wound around the outer side wall of the upper valve core (2). A limiting inclined surface (403) is provided at a position corresponding to the transition inclined surface (21) on the hole wall of the placement hole (401). The limiting inclined surface (403) is in close contact with the transition inclined surface (21), and the end surface of the non-connecting end of the upper valve core (2) is flush with the orifice end surface of the corresponding end of the placement hole (401).

7. The snap - type locking connector according to claim 2, wherein: The lower housing assembly further includes a female plug sleeve (7) connected to the connecting sleeve (1) by communicating and screwing. A stepped hole (15) is provided in the connecting sleeve (1). A push rod (50) extending into the small hole end of the stepped hole (15) is fixedly provided in the female plug sleeve (7). The extending end of the push rod (50) is sleeved in the directional hole (53) of the lower valve core (5). An installation groove (71) is provided at a position corresponding to the connection with the connecting sleeve (1) in the female plug sleeve (7). An installation ring (54) is connected to one end of the push rod (50), and the installation ring (54) is sleeved and fixed in the installation groove (71); A second compression spring (62) is further sleeved outside the push rod (50). A connecting convex block (52) is wound around the circumference on one side of the lower valve core (5). One end of the second compression spring (62) is in contact with the lower end surface of the connecting convex block (52), and the other end is in contact with the inner side wall of the installation ring (54); 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) is in close contact with the inner side wall of the directional hole (53).

8. The snap - type locking connector according to claim 7, wherein: A transition hole (16) is communicated and provided between the through hole and the stepped hole (15). A sleeve (3) extending into the large-hole end of the stepped hole (15) is sleeved outside the second compression spring (62). An upper sealing ring (63), a spacer ring (60) and a lower sealing ring (64) are sequentially stacked from top to bottom between the end face of the extending end of the sleeve (3) and the bottom of the stepped hole (15). The upper end face of the upper sealing ring (63) abuts against the bottom of the stepped hole (15), the lower end face of the lower sealing ring (64) abuts against the end face of the extending end of the sleeve (3), the spacer ring (60) is sleeved outside the lower valve core (5), and the outer side end face of the sleeve (3) abuts against the inner side wall of the mounting ring (54).

9. The snap - type locking connector according to claim 8, wherein: The stepped surface of the stepped hole (15) is an inclined surface structure that is narrow at the top and wide at the bottom. A first positioning inclined surface (171) is provided at a position corresponding to the stepped surface of the stepped hole (15) on the outer side wall of the sleeve (3), and a second positioning inclined surface (172) is provided at a position corresponding to the first positioning inclined surface (171) on the inner side wall of the sleeve (3); during installation, the sleeve (3) extends into the stepped hole (15), the end face of the extending end of the sleeve (3) abuts against the lower end face of the lower sealing ring (64), the first positioning inclined surface (171) fits and abuts against the stepped surface of the stepped hole (15), and the second positioning inclined surface (172) fits and abuts against the upper end face of the connecting lug (52).

10. A snap - type locking connector as claimed in claim 4, wherein: Bevel segments (18) facilitating the movement and yielding of the locking collar (12) are provided on both the second lug (144) and the limiting lug (17).

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