Blind plug connector capable of reducing leakage risk

Abstract

The utility model provides a blind insertion connector capable of reducing leakage risks, belongs to the technical field of blind insertion connectors, and solves the problem that in the prior art, a first valve body and a fixed shaft sleeve are seriously abraded after being used for a long time, and consequently fluid leaks. The socket comprises a plug and a socket, the plug comprises a plug shell, an abutting ring, an inner ring and a floating insertion rod are sequentially and movably arranged in the plug shell, the end face of the abutting ring abuts against a first clamping spring, a blocking groove is annularly formed in the inner wall of the plug shell, a blocking ring is annularly arranged on the outer wall of the floating insertion rod, and an elastic cushion is installed in the blocking groove. The end face of the plug housing is provided with a floating port. The floating inserting rod swings in the blocking groove, automatic alignment inserting connection can be achieved after the floating inserting rod abuts against the socket, 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, the gap is prevented from becoming large, and meanwhile the elastic soft cushion seals the gap between the floating inserting rod and the plug shell. And fluid leakage is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of blind-mating connector technology, specifically to a blind-mating connector that can reduce the risk of leakage. Background Technology

[0002] A blind-mating connector is a type of pipe connector designed to achieve quick and accurate connections even when the mating positions are not directly visible. It is widely used in aerospace, communication equipment, medical devices, and testing instruments, especially in space-constrained or frequent mating scenarios.

[0003] Existing technology, such as the sealing structure of a blind-fit connector disclosed in patent publication number CN216976159U, includes a male connector and a female connector, each with its front end as the mating end. The male connector includes a first valve body, a fixed bushing, and a sealing ring. The fixed bushing has a connecting hole and a mounting hole inside. The diameter of the connecting hole is smaller than the diameter of the mounting hole, and a stepped surface is formed between the wall of the connecting hole and the wall of the mounting hole. An annular sealing groove is provided on the stepped surface. The first valve body is radially floating in the mounting hole, and a first gap is left between the rear end face of the first valve body and the stepped surface. The sealing ring is pressed between the annular sealing groove and the rear end face of the first valve body, and a second gap is left between the sealing ring and the inner wall of the annular sealing groove. Its structure is reasonable, effectively improving the sealing effect and making it safer and more reliable to use.

[0004] The aforementioned patent describes a first valve body that is floatingly installed inside a fixed bushing. When the first valve body abuts against the guide slope of the female connector, the first valve body slides. During the sliding process, the first valve body rubs against the fixed bushing. After long-term use, this will cause severe wear between the first valve body and the fixed bushing, resulting in fluid leakage. Utility Model Content

[0005] To address the aforementioned problems, the purpose of this invention is to provide a blind-plug connector that reduces the risk of leakage. The floating plug can swing within the retaining groove, and the floating opening provides space for the swing of the floating plug. After the floating plug abuts against the socket, it can achieve automatic alignment and insertion. The elastic pad separates the floating plug from the plug housing, reducing wear between the floating plug and the plug housing, thereby preventing the gap between the floating plug and the plug housing from widening. At the same time, the elastic pad can also help seal the gap between the floating plug and the plug housing, preventing fluid leakage.

[0006] The technical solution adopted in this utility model is as follows:

[0007] A blind-fit connector that reduces the risk of leakage includes a plug and a socket. The plug includes a plug housing, in which a contact ring, an inner ring, and a floating plug are sequentially and movably disposed. The end face of the contact ring away from the inner ring abuts against a first retaining spring that engages with the plug housing. A retaining groove is annularly formed on the inner wall of the plug housing. A retaining ring is annularly formed on the outer wall of the floating plug that cooperates with the retaining groove to restrict the floating plug from moving out of the plug housing. An elastic pad is installed in the retaining groove. A floating port for the floating plug to swing is provided on the end face of the plug housing.

[0008] Preferably, sealing gaskets are provided between the abutting ring and the inner ring, and between the inner ring and the floating insert rod, and a first sealing ring that abuts against the sealing gasket is fitted on both the abutting ring and the floating insert rod.

[0009] Preferably, the floating plug rod is equipped with a plug valve core in a movable seal, and a first spring is provided at the end of the plug valve core near the abutment ring to abut against the abutment ring.

[0010] Preferably, the socket includes a socket housing, one end face of which is provided with a guide slope, a sleeve is movably disposed in the socket housing, a socket valve core is installed in the sleeve, a conical movable valve sleeve for sealing the sleeve is movably sealed on the socket valve core, a second spring is provided in the sleeve that abuts against the conical movable valve sleeve, a second retaining spring is provided at the end of the sleeve away from the guide slope that abuts against the socket housing, and a step is provided in the socket housing to limit the sleeve from moving out of the socket housing in the direction of the guide slope.

[0011] Preferably, a second sealing ring, an isolation ring, and a third sealing ring are sequentially installed between the sleeve and the step.

[0012] Preferably, the socket housing and plug housing are made of plastic.

[0013] Preferably, the outer wall of the plug housing near the first retaining ring is provided with threads, the outer wall of the socket housing near the second retaining ring is provided with threads, and a fourth sealing ring is fitted on the plug housing and the socket housing.

[0014] Preferably, the plug housing is provided with an identification ring.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0016] The floating plug can swing in the groove, and the floating port provides space for the swing of the floating plug. After the floating plug comes into contact with the socket, it can automatically align and plug in. The elastic pad separates the floating plug from the plug shell, reducing wear between the floating plug and the plug shell, thereby preventing the gap between the floating plug and the plug shell from widening. At the same time, the elastic pad can also help seal the gap between the floating plug and the plug shell to prevent fluid leakage. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A three-dimensional structural schematic diagram provided for an embodiment of this utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the plug provided in an embodiment of the present utility model;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the socket provided in an embodiment of the present utility model;

[0021] Figure 4 This is a schematic diagram of the plug and socket mating provided in an embodiment of the present utility model;

[0022] Figure 5 A three-dimensional structural diagram of the plug valve core provided in an embodiment of this utility model;

[0023] Figure 6 A three-dimensional structural diagram of the socket valve core provided in this embodiment of the utility model;

[0024] Figure 7 This is a schematic diagram showing the floating insert end face located between the second and third sealing rings, according to an embodiment of the present invention.

[0025] Reference numerals: 1-Plug; 101-Plug housing; 102-Abutment ring; 103-Elastic pad; 104-Floating port; 105-Plug valve core; 106-Floating plug; 107-First snap ring; 108-First sealing ring; 109-Sealing gasket; 110-Inner ring; 111-Retaining ring; 112-Retaining groove; 113-First spring; 2-Socket; 201-Socket housing; 202-Conical movable valve sleeve; 203-Second spring; 204-Sleeve; 205-Second snap ring; 206-Guide slope; 207-Socket valve core; 208-Second sealing ring; 209-Isolation ring; 210-Third sealing ring; 211-Step; 3-Fourth sealing ring; 4-Identification ring. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0028] In the description of this utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] The following is combined Figures 1-7 This utility model will be described in detail.

[0030] Example

[0031] A blind-fit connector that reduces the risk of leakage includes a plug 1 and a socket 2. The plug 1 includes a plug housing 101. An abutment ring 102, an inner ring 110, and a floating plug rod 106 are sequentially and movably disposed in the plug housing 101. The end face of the abutment ring 102 away from the inner ring 110 abuts against a first retaining spring 107 that engages with the plug housing 101. A retaining groove 112 is annularly formed on the inner wall of the plug housing 101. A retaining ring 111 is annularly formed on the outer wall of the floating plug rod 106, which cooperates with the retaining groove 112 to restrict the floating plug rod 106 from moving out of the plug housing 101. An elastic pad 103 is installed in the retaining groove 112. A floating port 104 is provided on the end face of the plug housing 101 for the floating plug rod 106 to swing. The inner wall of the plug housing 101 is provided with a groove that cooperates with the first retaining spring 107. The floating opening 104 is flared. After the floating plug rod 106 swings to the limit position, the floating plug rod 106 fits against the inclined surface of the floating opening 104 to avoid the protruding edge of the floating opening 104 scratching the surface of the floating plug rod 106.

[0032] The floating plug 106 can swing within the retaining groove 112. The floating opening 104 provides space for the swing of the floating plug 106. After the floating plug 106 abuts against the socket 2, it can automatically align and connect. The elastic pad 103 separates the floating plug 106 from the plug housing 101, reducing wear between them and preventing the gap between them from widening. The elastic pad 103 also helps seal the gap between the floating plug 106 and the plug housing 101, preventing fluid leakage. Furthermore, the elastic pad 103 can assist in the centering and resetting of the floating plug 106.

[0033] like Figure 2 As shown, when installing plug 1, the elastic soft pad 103 is first installed into the retaining groove 112. Since the retaining groove 112 restricts the floating plug rod 106 from moving to the right out of the plug housing 101, the floating plug rod 106 is inserted into the plug housing 101 from left to right. Then, the inner ring 110 and the abutment ring 102 are installed in sequence. Finally, the first retaining spring 107 is snapped on to restrict the abutment ring 102 from moving out of the plug housing 101, thus completing the assembly operation.

[0034] Sealing gaskets 109 are provided between the abutting ring 102 and the inner ring 110, and between the inner ring 110 and the floating plug 106. First sealing rings 108, which abut against the sealing gaskets 109, are fitted onto both the abutting ring 102 and the floating plug 106. The combination of the sealing gaskets 109 and the first sealing rings 108 increases sealing performance and facilitates quick assembly of the plug 1. The first sealing rings 108 also seal the gaps between the inner wall of the plug housing 101 and other structures, preventing fluid leakage.

[0035] A plug valve core 105 is movably sealed within the floating plug rod 106. A first spring 113 abuts against the abutment ring 102 at the end of the plug valve core 105 near the abutment ring 102. A tapered channel is provided within the floating plug rod 106. When the plug valve core 105 is at the minimum end of the tapered channel, it blocks the channel. When the plug valve core 105 moves from the minimum end to the maximum end, the tapered channel is opened. The first spring 113 provides a reset function for the plug valve core 105, ensuring that the tapered channel can be closed after it has been opened. A bracket (not shown in the figure) is provided on the plug valve core 105 to abut against the tapered channel, preventing the plug valve core 105 from moving out of the floating plug rod 106. The plug valve core 105 is pre-installed into the floating plug rod 106. The plug valve core 105 is installed together with the floating plug rod 106. After the inner ring 110 is installed, the first spring 113 is placed into the floating plug rod 106, and then the abutment ring 102 is installed.

[0036] The socket 2 includes a socket housing 201. One end face of the socket housing 201 has a guide slope 206. A sleeve 204 is movably disposed within the socket housing 201. A socket valve core 207 is installed within the sleeve 204. A conical movable valve sleeve 202 for sealing the sleeve 204 is movably sealed on the socket valve core 207. A second spring 203 abuts against the conical movable valve sleeve 202 within the sleeve 204. A second retaining spring 205, engaging with the socket housing 201, abuts against the end of the sleeve 204 away from the guide slope 206. A step 211 is provided in the socket housing 201 to restrict the sleeve 204 from moving out of the socket housing 201 towards the guide slope 206. A groove is provided on the inner wall of the socket housing 201 to cooperate with the second retaining spring 205.

[0037] After the floating plug 106 abuts against the guide slope 206, the guide slope 206 guides the floating plug 106 to the axial position, aligning the floating plug 106 with the socket valve core 207. The continuous insertion of the floating plug 106 pushes open the conical movable valve sleeve 202, thereby achieving communication between the socket 2 and the plug 1. During the process of the floating plug 106 moving out of the socket 2, the second spring 203 pushes the conical movable valve sleeve 202 to reset in time, and the first spring 113 pushes the plug valve core 105 to reset in time. The conical structure of the conical movable valve sleeve 202, combined with the end-retracting structure of the sleeve 204, prevents the conical movable valve sleeve 202 from moving out of the sleeve 204. The step 211, in conjunction with the second retaining spring 205, restricts the sleeve 204 from moving out of the socket housing 201. Both the plug valve core 105 and the socket valve core 207 are fitted with sealing rings to ensure sealing performance.

[0038] A second sealing ring 208, an isolation ring 209, and a third sealing ring 210 are sequentially installed between the sleeve 204 and the step 211. The isolation ring 209 separates the second sealing ring 208 and the third sealing ring 210, ensuring that each sealing ring maintains its own sealing effect. The floating insert 106 is first inserted into the third sealing ring 210 via the guide ramp 206, achieving initial sealing before the channel of the floating insert 106 opens; as... Figure 7As shown, when the end face of the floating rod 106 has not yet moved to the position of the second sealing ring 208, the channel portion of the floating rod 106 is open. Due to the high pressure, fluid may flow out from the gap between the floating rod 106 and the conical movable valve sleeve 202. The third sealing ring 210 prevents excessive fluid leakage from this gap. After the floating rod 106 passes the second sealing ring 208, the second sealing ring 208, fitted onto the floating rod 106, forms two sets of seals with the third sealing ring 210. After the channel of the socket 2 is fully open, high-pressure fluid is prevented from leaking from the gap in the outer wall of the floating rod 106, effectively reducing fluid leakage. The second sealing ring 208 can also seal the gap between the sleeve 204 and the socket housing 201, preventing fluid leakage. The isolation ring 209 can be made of rubber, allowing for bending and deformation, facilitating installation.

[0039] Before installing socket 2, sleeve 204, conical movable valve sleeve 202 and second spring 203 are pre-assembled into one piece; when installing socket 2, the second sealing ring 208, isolation ring 209, third sealing ring 210 and sleeve 204 are placed into socket housing 201 from left to right in sequence, and finally the second snap ring 205 is snapped to complete the assembly. The operation is simple.

[0040] The socket housing 201 and plug housing 101 are made of plastic to reduce the weight of the connector and lower operating costs. The plug valve core 105, floating plug 106, conical movable valve sleeve 202, and socket valve core 207 are made of metal to meet the strength requirements of the mating process. The inner ring 110 increases the compressive strength inside the plug housing 101 to prevent it from breaking due to excessive fluid pressure. The inner ring 110 can be adjusted according to usage requirements and can be made of plastic or metal. When the fluid pressure is low, the inner ring 110 can be made of plastic; when the fluid pressure is high, the inner ring 110 can be made of metal. The abutment ring 102 can also be made of plastic or metal, depending on usage requirements and operating costs. The sleeve 204 is made of metal to increase the compressive strength of the socket housing 201.

[0041] The outer wall of the plug housing 101 near the first retaining ring 107 is threaded, and the outer wall of the socket housing 201 near the second retaining ring 205 is also threaded, facilitating the connection of the plug housing 101 and the socket housing 201 to the pipe. A fourth sealing ring 3 is fitted onto both the plug housing 101 and the socket housing 201 to seal the gaps between the plug housing 101 and the pipe, and between the socket housing 201 and the pipe, preventing fluid leakage. The plug housing 101 has hexagonal protrusions, and the outer wall of the socket housing 201 has several evenly spaced planes along its circumference, facilitating the tightening of the plug 1 and socket 2 onto the pipe using a wrench.

[0042] A labeling ring 4 is provided on the plug housing 101. The labeling ring 4 is fitted onto the plug housing 101. Different plugs 1 have different colors of labeling ring 4. For example, the labeling ring 4 on the plug 1 connected to hot water is red, and the labeling ring 4 on the plug 1 connected to cold water is blue. The labeling ring 4 can be a rubber ring for easy fitting.

[0043] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A blind-mating connector that reduces the risk of leakage, comprising a plug (1) and a socket (2), characterized in that, The plug (1) includes a plug housing (101), in which a contact ring (102), an inner ring (110), and a floating plug rod (106) are sequentially and movably arranged. The end face of the contact ring (102) away from the inner ring (110) abuts against a first retaining ring (107) that engages with the plug housing (101). A retaining groove (112) is annularly opened on the inner wall of the plug housing (101). A retaining ring (111) is annularly arranged on the outer wall of the floating plug rod (106) to cooperate with the retaining groove (112) to restrict the floating plug rod (106) from moving out of the plug housing (101). An elastic soft pad (103) is installed in the retaining groove (112). A floating port (104) for the floating plug rod (106) to swing is provided on the end face of the plug housing (101).

2. The blind-mating connector with reduced leakage risk according to claim 1, characterized in that, A sealing gasket (109) is provided between the abutting ring (102) and the inner ring (110), and between the inner ring (110) and the floating insert (106). A first sealing ring (108) that abuts against the sealing gasket (109) is provided on both the abutting ring (102) and the floating insert (106).

3. A blind-mating connector with reduced leakage risk according to claim 1, characterized in that, The floating plug rod (106) is equipped with a plug valve core (105) in a movable seal. The plug valve core (105) is provided with a first spring (113) that abuts against the abutment ring (102) at one end.

4. A blind-mating connector with reduced leakage risk according to claim 1, characterized in that, The socket (2) includes a socket housing (201), one end face of which is provided with a guide slope (206), a sleeve (204) is movably disposed in the socket housing (201), a socket valve core (207) is installed in the sleeve (204), a conical movable valve sleeve (202) for sealing the sleeve (204) is movably sealed on the socket valve core (207), a second spring (203) is provided in the sleeve (204) to abut against the conical movable valve sleeve (202), a second snap ring (205) is abutted against the socket housing (201) at the end of the sleeve (204) away from the guide slope (206), and a step (211) is provided in the socket housing (201) to restrict the sleeve (204) from moving out of the socket housing (201) in the direction of the guide slope (206).

5. A blind-mating connector with reduced leakage risk according to claim 4, characterized in that, A second sealing ring (208), an isolation ring (209), and a third sealing ring (210) are sequentially installed between the sleeve (204) and the step (211).

6. A blind-mating connector with reduced leakage risk according to claim 4, characterized in that, The socket housing (201) and plug housing (101) are made of plastic.

7. A blind-mating connector with reduced leakage risk according to claim 4, characterized in that, The plug housing (101) has a threaded outer wall at one end near the first retaining ring (107), and the socket housing (201) has a threaded outer wall at one end near the second retaining ring (205). A fourth sealing ring (3) is fitted on the plug housing (101) and the socket housing (201).

8. A blind-mating connector with reduced leakage risk according to claim 1, characterized in that, The plug housing (101) is provided with an identification ring (4).

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