Blind plug connector

Abstract

The invention provides a blind plug connector, belongs to the technical field of blind plug connectors, and solves the problem of leakage caused by serious abrasion after long-term use of a male head valve body and a male head base in the prior art. The plug comprises a plug body, the plug body comprises a plug shell, an inner ring is movably arranged in the plug shell, one end of the inner ring is provided with a floating insertion rod movably connected with the plug body, the other end of the inner ring is provided with a retaining ring connected with the plug body in a clamped mode, sealing assemblies are arranged on the two end faces of the inner ring, and a blocking groove is annularly formed in the inner wall of the plug shell. The outer wall of the floating insertion rod is annularly provided with a baffle ring which cooperates with the baffle groove to limit the floating insertion rod from moving out of the plug housing, and the baffle groove is internally provided with an elastic cushion. The floating inserting rod can swing in the blocking groove, so that automatic alignment and butt joint are achieved, the floating inserting rod and the plug shell are separated through the elastic soft cushion, abrasion between the floating inserting rod and the plug shell is reduced, meanwhile, the gap between the floating inserting rod and the plug shell can be sealed in an auxiliary mode, and the sealing performance is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of blind mating connectors, and more particularly to a blind mating connector. Background Art

[0002] A blind mating connector is a pipe connector that can be quickly and reliably connected without direct line-of-sight alignment, and is widely used in fields such as communication, industrial control, and medical equipment.

[0003] A blind mating connector mainly includes a plug and a socket. A floating insertion rod is provided on the plug for aligning with the socket for insertion to ensure automatic alignment and connection of the connector. The prior art, such as a blind mating quick connector disclosed in the patent with publication number CN220749381U, includes a male head and a female head; the male head includes a male head base, a fastener, and a connector assembly; one end of the connector assembly is arranged in the male head base, the fastener is arranged between the connector assembly and the male head base, and one end of the fastener abuts against the left end of the connector assembly. Floating gaps are provided between the outer wall of the connector assembly and the inner wall of the fastener and between the outer wall of the connector assembly and the inner wall of the male head base; the female head includes a female head valve body, and the inner wall at the left end opening of the female head valve body has a tapered hole wall section with a gradually decreasing inner diameter from left to right; the male head and the female head are connected through the connector assembly, and the connector assembly can float radially along the tapered hole wall section. In the present invention, the male head valve body can float radially in the female head valve body, which can solve the problem that when replacing other servers, the error of the female head changes, while the male head has shifted to the mating position of the female head of the previous server, resulting in the error exceeding the tolerance range and being unable to mate.

[0004] The above patent uses the male head base and the fastener to limit the male head valve body, so that the male head valve body can only slide radially. After the male head valve body contacts the tapered hole wall section, it will cause the male head valve body to closely adhere to the male head base and slide. After long-term use, the wear between the male head valve body and the male head base will be serious, resulting in fluid leakage. Summary of the Invention

[0005] Aiming at the above problems, the purpose of the present invention is to provide a blind mating connector. The floating insertion rod can swing in the retaining groove, so as to achieve automatic alignment and docking. The elastic soft pad separates the floating insertion rod from the plug housing, reducing the wear between the floating insertion rod and the plug housing. At the same time, it can assist in sealing the gap between the floating insertion rod and the plug housing, increasing the sealing performance.

[0006] The technical solution adopted by the present invention is as follows:

[0007] A blind plug connector includes a plug. The plug includes a plug housing, an inner ring is movably arranged in the plug housing. One end of the inner ring is provided with a floating plug rod movably connected to the plug, and the other end of the inner ring is provided with a retaining ring clamped to the plug. Sealing components are arranged on both end faces of the inner ring. A retaining groove is annularly formed on the inner wall of the plug housing, and a retaining ring is annularly arranged on the outer wall of the floating plug rod to cooperate with the retaining groove to limit the floating plug rod from moving out of the plug housing. An elastic soft pad is installed in the retaining groove.

[0008] Preferably, the sealing component includes a sealing washer abutted against the end face of the inner ring, and a first sealing ring sleeved on the retaining ring and the floating plug rod respectively is abutted against one end of the sealing washer away from the inner ring.

[0009] Preferably, a plug valve core is movably and sealingly arranged in the floating plug rod, and a first spring abutted against the retaining ring is arranged at one end of the plug valve core close to the retaining ring.

[0010] Preferably, the plug housing and the retaining ring are made of plastic.

[0011] Preferably, a flared opening for the floating plug rod to swing is arranged on the end face of the plug housing.

[0012] Preferably, it further includes a socket. The socket includes a socket housing. A guiding inclined surface is arranged on one end face of the socket housing, and a limiting projection is arranged on the other end face of the socket housing. A sleeve abutted against the limiting projection is movably arranged in the socket housing. A socket valve core is installed in the sleeve. A conical movable valve sleeve for blocking the sleeve is movably and sealingly sleeved on the socket valve core. A second spring abutted against the conical movable valve sleeve is arranged in the sleeve. A guiding retaining ring for limiting the sleeve from moving out of the socket housing is clamped in the guiding inclined surface.

[0013] Preferably, an isolation ring is arranged between the guiding retaining ring and the sleeve. A second sealing ring in contact with the outer wall of the conical movable valve sleeve is arranged between the isolation ring and the sleeve. A third sealing ring is arranged between the guiding retaining ring and the isolation ring.

[0014] Preferably, the socket housing is made of plastic.

[0015] Preferably, an identification ring is arranged on the plug housing.

[0016] Preferably, hexagonal protrusions are arranged on the plug housing.

[0017] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are:

[0018] 1. The floating plug rod can swing in the retaining groove, enabling automatic alignment and docking. The elastic soft pad separates the floating plug rod from the plug housing, reducing wear between the floating plug rod and the plug housing. Meanwhile, it can assist in sealing the gap between the floating plug rod and the plug housing, enhancing the sealing performance.

[0019] 2. The floating plug rod, inner ring, and anti - withdrawal ring can be successively installed into the plug housing. The floating plug rod is restricted from moving out of the plug housing through the cooperation of the retaining ring and the retaining groove, and finally is snapped onto the plug housing through the anti - withdrawal ring, realizing rapid assembly operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0021] Figure 1 Schematic three - dimensional structure diagram provided by the embodiment of the present invention;

[0022] Figure 2 Schematic cross - sectional structure diagram of the plug provided by the embodiment of the present invention;

[0023] Figure 3 Schematic cross - sectional structure diagram of the socket provided by the embodiment of the present invention;

[0024] Figure 4 Schematic diagram of the cooperation between the plug and the socket provided by the embodiment of the present invention;

[0025] Figure 5 Schematic three - dimensional structure diagram of the plug valve core provided by the embodiment of the present invention;

[0026] Figure 6 Schematic three - dimensional structure diagram of the socket valve core provided by the embodiment of the present invention;

[0027] Figure 7 Schematic cross - sectional structure diagram of the plug provided by another embodiment of the present invention.

[0028] Reference numerals: 1 - plug; 101 - plug housing; 102 - elastic cushion pad; 103 - annular protrusion; 104 - annular groove; 105 - flared opening; 106 - plug valve core; 107 - floating plug rod; 108 - anti - reverse ring; 109 - first sealing ring; 110 - sealing washer; 111 - inner ring; 112 - retaining ring; 113 - retaining groove; 114 - first spring; 2 - socket; 201 - socket housing; 202 - socket valve core; 203 - second sealing ring; 204 - isolation ring; 205 - third sealing ring; 206 - guiding anti - reverse ring; 207 - guiding inclined plane; 208 - conical movable valve sleeve; 209 - sleeve; 210 - second spring; 211 - limiting protrusion; 3 - fourth sealing ring; 4 - identification ring. Detailed implementation mode

[0029] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. The components of the embodiments of the present invention usually described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship in which the product of this application is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0032] The following is a detailed description of the present invention in conjunction with Figures 1-7 the present invention.

[0033] Embodiment

[0034] A blind plug connector includes a plug 1. The plug 1 includes a plug housing 101. An inner ring 111 is movably arranged in the plug housing 101. One end of the inner ring 111 is provided with a floating plug rod 107 movably connected to the plug 1. The other end of the inner ring 111 is provided with a retaining ring 108 snap-connected to the plug 1. Sealing components are arranged on both end faces of the inner ring 111. A retaining groove 113 is annularly formed on the inner wall of the plug housing 101. An annular retaining ring 112 is arranged on the outer wall of the floating plug rod 107, which cooperates with the retaining groove 113 to limit the floating plug rod 107 from moving out of the plug housing 101. An elastic soft pad 102 is installed in the retaining groove 113.

[0035] As Figure 2 shown, the elastic soft pad 102 is arranged between the floating plug rod 107 and the plug housing 101. When the floating plug rod 107 swings, it can squeeze the elastic soft pad 102 to deform it, so as to ensure that the floating plug rod 107 can swing and adjust its orientation to achieve automatic alignment connection, and at the same time avoid contact and mutual wear between the floating plug rod 107 and the plug housing 101. The elastic soft pad 102 can also assist the floating plug rod 107 to reset and center.

[0036] Installation steps of the plug 1: First, install the elastic soft pad 102 into the retaining groove 113. The floating plug rod 107 is inserted into the plug housing 101 from left to right. The retaining ring 112 on the floating plug rod 107 is blocked by the retaining groove 113, thereby restricting the floating plug rod 107 from moving out of the plug housing 101 from the right. Then, install the sealing components, the inner ring 111, the sealing components and the retaining ring 108 in sequence. The setting method of this application can facilitate quick assembly.

[0037] The sealing component includes a sealing washer 110 abutting against the end face of the inner ring 111. One end of the sealing washer 110 away from the inner ring 111 abuts against a first sealing ring 109 sleeved on the retaining ring 108 and the floating plug rod 107 respectively. By using the sealing washer 110 and the first sealing ring 109 in combination, while increasing the sealing performance, it can also facilitate the quick assembly of the plug 1. The first sealing ring 109 can also seal the gap between the inner wall of the plug housing 101 and other structures to avoid fluid leakage.

[0038] A plug valve core 106 is movably sealed in the floating plug rod 107. A first spring 114 that abuts against the anti-retreat ring 108 is provided at one end of the plug valve core 106 close to the anti-retreat ring 108. A conical channel is provided in the floating plug rod 107. When the plug valve core 106 is at the smallest end of the conical channel, the plug valve core 106 blocks the conical channel. When the plug valve core 106 moves from the smallest end to the largest end of the conical channel, the conical channel is opened. The first spring 114 provides a reset function for the plug valve core 106 to ensure that the plug valve core 106 can close the conical channel after opening it. A bracket (not marked in the figure) is provided on the plug valve core 106 for abutting against the conical channel to prevent the plug valve core 106 from moving out of the floating plug rod 107.

[0039] Among them, the plug valve core 106 is pre-installed in the floating plug rod 107. The plug valve core 106 is installed together with the floating plug rod 107. After installing the inner ring 111, the first spring 114 is placed into the floating plug rod 107, and finally the anti-retreat ring 108 is snap-fitted and installed.

[0040] The plug housing 101 and the anti-retreat ring 108 are made of plastic, which facilitates the slight deformation of the plug housing 101 and the anti-retreat ring 108 to be snap-fitted with each other, and at the same time reduces the manufacturing cost of the plug 1 (reduces the use of metal materials). The floating plug rod 107 is made of metal to meet the strength requirements during the docking process. The function of the inner ring 111 is to increase the compressive strength inside the plug housing 101 and prevent the plug housing 101 from cracking due to excessive fluid pressure. The inner ring 111 can be adjusted according to the usage requirements and can be set to be made of plastic or metal. When the fluid pressure is not high, the inner ring 111 can be set to be plastic, and at the same time, the inner ring 111 and the anti-retreat ring 108 can be integrally formed, as Figure 7 shown, which can reduce the use of a set of sealing components and further reduce the cost. When the fluid pressure is high, the inner ring 111 is set to be metal.

[0041] An annular protrusion 103 is provided on the anti-retreat ring 108, and an annular groove 104 that cooperates with the annular protrusion 103 is provided on the inner wall of the plug housing 101. Or an annular groove 104 can be provided on the anti-retreat ring 108, and an annular protrusion 103 is provided on the inner wall of the plug housing 101. Or both the inner walls of the anti-retreat ring 108 and the plug housing 101 are provided with annular grooves 104 and annular protrusions 103, so as to realize the snap-fitting of the anti-retreat ring 108 and the plug housing 101. The tail end of the anti-retreat ring 108 is provided with a flared inlet to facilitate the guiding of the fluid.

[0042] A flared opening 105 for the floating plug rod 107 to swing is provided on the end face of the plug housing 101. The flared opening 105 provides space for the swing of the floating plug rod 107.

[0043] A blind plug connector further includes a socket 2. The socket 2 includes a socket housing 201. One end face of the socket housing 201 is provided with a guiding inclined surface 207, and the other end face of the socket housing 201 is provided with a limiting projection 211. A sleeve 209 that abuts against the limiting projection 211 is movably arranged in the socket housing 201. A socket valve core 202 is installed in the sleeve 209. A conical movable valve sleeve 208 for plugging the sleeve 209 is movably and sealingly sleeved on the socket valve core 202. A second spring 210 that abuts against the conical movable valve sleeve 208 is arranged in the sleeve 209. A guiding anti-retreat ring 206 for restricting the sleeve 209 from moving out of the socket housing 201 is clamped in the guiding inclined surface 207.

[0044] As Figure 3 and 4 shown, the guiding inclined surface 207 can guide the floating plug rod 107, so that the floating plug rod 107 can deflect towards the axis of the guiding anti-retreat ring 206 and be inserted; the floating plug rod 107 is aligned with the socket valve core 202 and the socket valve core 202 pushes open the plug valve core 106, and at the same time the floating plug rod 107 pushes open the conical movable valve sleeve 208, thereby realizing the connection between the socket 2 and the plug 1; during the process of the floating plug rod 107 moving out of the socket 2, the second spring 210 pushes the conical movable valve sleeve 208 to make the conical movable valve sleeve 208 fit with the floating plug rod 107, ensuring that the channel of the socket 2 is closed in time. At the same time, the first spring 114 also pushes the plug valve core 106 to reset and close the channel of the plug 1 in time. Among them, the conical structure of the conical movable valve sleeve 208 cooperates with the end part closing structure of the sleeve 209 to prevent the conical movable valve sleeve 208 from moving out of the sleeve 209; the limiting projection 211 can prevent the sleeve 209 from moving out of the socket housing 201 to the right; sealing rings are sleeved on both the plug valve core 106 and the socket valve core 202 to ensure the sealing performance.

[0045] A spacer ring 204 is provided between the guiding anti-retraction ring 206 and the sleeve 209. A second sealing ring 203 that contacts the outer wall of the conical movable valve sleeve 208 is provided between the spacer ring 204 and the sleeve 209. A third sealing ring 205 is provided between the guiding anti-retraction ring 206 and the spacer ring 204. The spacer ring 204 is provided to separate the second sealing ring 203 and the third sealing ring 205, so that the two sealing rings maintain their respective sealing effects. After the floating plug 107 is inserted into the guiding anti-retraction ring 206, the third sealing ring 205 is first sleeved on the floating plug 107, so as to perform preliminary sealing before the conical movable valve sleeve 208 and the plug valve core 106 are opened. When the end face of the floating plug 107 has not moved to the position of the second sealing ring 203, the channel part of the floating plug 107 is opened, and the fluid may flow out from the gap between the floating plug 107 and the conical movable valve sleeve 208 due to the large pressure. The setting of the third sealing ring 205 can prevent excessive leakage of fluid at this gap. After the floating plug 107 passes through the second sealing ring 203, the second sealing ring 203 is sleeved on the floating plug 107 to form two sets of seals with the third sealing ring 205. After the channel of the socket 2 is completely opened, it can prevent the fluid under high pressure from leaking from the outer wall gap of the floating plug 107, and can effectively reduce the fluid leakage amount. The second sealing ring 203 can also seal the gap between the sleeve 209 and the socket housing 201 to prevent fluid leakage.

[0046] The installation steps of the socket 2 are as follows Figure 3 As shown, the sleeve 209, the conical movable valve sleeve 208 and the second spring 210 are pre-assembled into one body, and then placed into the socket housing 201 from left to right together; then the second sealing ring 203, the spacer ring 204, the third sealing ring 205 and the guiding anti-retraction ring 206 are installed in sequence, and the assembly is simple and fast.

[0047] The socket housing 201 is made of plastic. It is convenient for the socket housing 201 to be slightly deformed to facilitate the snap connection of the guiding anti-retraction ring 206, and at the same time reduce the manufacturing cost of the plug 1. The guiding anti-retraction ring 206 can be made of metal or plastic. The spacer ring 204 is made of rubber and can be bent and deformed for easy installation. Protrusions are provided on the guiding anti-retraction ring 206, and grooves matching the protrusions are provided on the inner wall of the socket housing 201, or grooves are provided on the guiding anti-retraction ring 206, and protrusions are provided on the inner wall of the socket housing 201, or grooves and protrusions are provided on both the guiding anti-retraction ring 206 and the inner wall of the socket housing 201. The sleeve 209 is made of metal to increase the compressive strength of the socket housing 201; the conical movable valve sleeve 208 and the socket valve core 202 are also made of metal to meet the strength requirements during the docking process.

[0048] The plug housing 101 is provided with an identification ring 4. The identification ring 4 is sleeved on the plug housing 101, and the colors of the identification rings 4 on different plugs 1 are different. For example, the identification ring 4 on the plug 1 connected to hot water is red, and the identification ring 4 on the plug 1 connected to cold water is blue; the identification ring 4 can be a rubber ring for convenient sleeving.

[0049] The plug housing 101 is provided with hexagonal protrusions, and several planes are evenly arranged circumferentially on the outer wall of the socket housing 201, which is convenient for using a wrench to tighten the plug 1 and the socket 2 onto the pipeline.

[0050] Threads are provided on the outer wall of one end of the plug housing 101 close to the anti-retreat ring 108, and threads are provided on the outer wall of one end of the socket housing 201 away from the guiding anti-retreat ring 206, which is convenient for the plug housing 101 and the socket housing 201 to connect to the pipeline. A fourth sealing ring 3 is sleeved on the plug housing 101 and the socket housing 201 to seal the gaps between the plug housing 101 and the pipeline and between the socket housing 201 and the pipeline, avoiding fluid leakage.

[0051] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A blind-plug connector, comprising a plug (1), characterized in that: The plug (1) comprises a plug shell (101), an inner ring (111) movably arranged in the plug shell (101), a floating plug rod (107) movably connected to the plug (1) being arranged at one end of the inner ring (111), a stop ring (108) clamped to the plug (1) being arranged at the other end of the inner ring (111), sealing components being arranged at both end surfaces of the inner ring (111), a retaining groove (113) being annularly provided on the inner wall of the plug shell (101), a retaining ring (112) being annularly provided on the outer wall of the floating plug rod (107) and cooperating with the retaining groove (113) to limit the floating plug rod (107) from moving out of the plug shell (101), and an elastic cushion (102) being installed in the retaining groove (113).

2. A blind plug connector according to claim 1, characterized in that: The sealing assembly comprises a sealing gasket (110) abutting against the end surface of the inner ring (111), and one end of the sealing gasket (110) away from the inner ring (111) abuts against a first sealing ring (109) respectively sleeved on the stop ring (108) and the floating plug rod (107).

3. A blind plug connector according to claim 1, characterized in that: A plug valve core (106) is provided in a movable seal in the floating plug rod (107), and a first spring (114) abutting against the stop ring (108) is provided at one end of the plug valve core (106) close to the stop ring (108).

4. A blind plug connector according to claim 1, characterized in that: The plug housing (101) and the retaining ring (108) are made of plastic.

5. A blind-plug connector according to claim 1, characterized in that: The end surface of the plug housing (101) is provided with a bell mouth (105) for the floating plug rod (107) to swing.

6. A blind-plug connector according to claim 1, characterized in that: The socket (2) also comprises a socket housing (201), wherein the socket (2) comprises a socket housing (201), one end surface of the socket housing (201) is provided with a guide inclined surface (207), the other end surface of the socket housing (201) is provided with a limit protrusion (211), a sleeve (209) is movably provided in the socket housing (201) and is in contact with the limit protrusion (211), a socket valve core (202) is installed in the sleeve (209), a movable sealing sleeve on the socket valve core (202) is provided with a conical movable valve sleeve (208) for sealing the sleeve (209), a second spring (210) is provided in the sleeve (209) and is in contact with the conical movable valve sleeve (208), and a guide stop ring (206) is clamped in the guide inclined surface (207) and is used to limit the sleeve (209) from moving out of the socket housing (201).

7. A blind-plug connector according to claim 6, characterized in that: An isolating ring (204) is arranged between the guide check ring (206) and the sleeve (209), a second sealing ring (203) in contact with the outer wall of the conical movable valve sleeve (208) is arranged between the isolating ring (204) and the sleeve (209), and a third sealing ring (205) is arranged between the guide check ring (206) and the isolating ring (204).

8. A blind-plug connector according to claim 6, characterized in that: The socket housing (201) is made of plastic.

9. A blind-plug connector according to claim 1, characterized in that: The plug housing (101) is provided with an identification ring (4).

10. A blind-plug connector according to claim 1, characterized in that: The plug housing (101) is provided with a hexagonal protrusion.

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