A quick-connect sealing connector for hoses

Abstract

This utility model relates to the field of pipeline connection technology and discloses a quick-connect sealing joint for flexible hoses, including a quick-connect assembly. The quick-connect assembly includes a main connector and a secondary connector, which are initially connected by an external locking block. The secondary connector is provided with a rubber gasket. A fixed plate is fixedly connected inside the main connector, and a rotating plate is rotatably connected to the rear side of the fixed plate. The fixed plate has a radially extending straight through hole, and the rotating plate has an arc-shaped through hole. It also includes a straight rod that slides through the straight through hole and the arc-shaped through hole. An internal locking block is fixedly connected to the radially outer end of the straight rod. An operating rod that extends through the main connector is fixedly connected to the rotating plate. This utility model solves the problems of insufficient connection reliability and easy loosening through internal and external double locking, and has the beneficial effects of extremely firm connection, strong resistance to pull-out and vibration, and stable and reliable sealing performance.

Description

Technical Field

[0001] This utility model relates to the field of pipe connection technology, and in particular to a quick-connect sealing joint for flexible hoses. Background Technology

[0002] In modern industry, engineering machinery, and fluid transportation, hoses are widely used as flexible connecting pipes. For ease of installation, maintenance, or replacement, hoses are typically connected at both ends using fittings. These fittings not only need to provide reliable sealing to prevent fluid leakage but also need to be quick to insert and remove to improve work efficiency.

[0003] Currently, there are various types of quick couplings on the market, such as the common snap-fit ​​couplings or ball-lock couplings. These couplings achieve quick connection with a simple plug-and-play or a simple plug-and-twist mechanism through the cooperation of springs, claws, or slots, which largely meets the need for convenience.

[0004] However, while these conventional quick couplings offer convenience, their connection reliability is often insufficient. They mostly rely on spring force or simple mechanical clips to resist pull-out forces. In situations involving high-pressure fluid impact, severe vibration, or unexpected axial pulling, this single, passive locking force may be insufficient to maintain a stable connection, posing a risk of clip loosening, connection failure, or even instantaneous detachment. This could not only lead to fluid leakage but also potentially cause serious safety accidents.

[0005] Therefore, this utility model proposes a quick-connect sealing connector for hoses to overcome the shortcomings of the prior art. Utility Model Content

[0006] In view of the problems of insufficient connection reliability and easy accidental loosening and leakage caused by vibration or high pressure impact in the existing quick-connect sealing joints for hoses, this utility model aims to provide a quick-connect sealing joint for hoses with an improved structure that can effectively solve the above problems.

[0007] This utility model provides a quick-connect sealing connector for a hose, including a quick-connect assembly. The quick-connect assembly includes a main connector and a secondary connector that can be detachably engaged with the main connector. The outer walls of the main connector and the secondary connector are respectively provided with external locking blocks that engage with each other. The mating end face of the secondary connector is provided with a rubber gasket for sealing.

[0008] The quick-connect sealing joint for the hose also includes a fixed plate, a rotating plate, a straight rod, an internal locking block, and an operating rod disposed inside the main joint; wherein, the fixed plate is fixedly connected inside the main joint, and the rotating plate is rotatably connected to the axial rear side of the fixed plate;

[0009] Furthermore, the fixed plate has a straight through hole extending radially therein, while the rotating plate has an arc-shaped through hole;

[0010] The straight rod slides through the straight through hole and the arc-shaped through hole, and the inner connecting block is fixedly connected to the radial outer end of the straight rod;

[0011] The operating lever is fixedly connected to the rotating plate and extends through the main connector;

[0012] The inner wall of the sub-connector is provided with a groove for engaging the inner connecting block.

[0013] Preferably, the external locking block has a specific structure including a protrusion on the outer wall of the main connector and an L-shaped guide groove on the outer wall of the secondary connector for accommodating and locking the protrusion. The external quick locking and fixing is achieved through the rotational engagement of the protrusion and the L-shaped guide groove.

[0014] Preferably, the rubber gasket is in the form of an annular gasket and is embedded in an annular groove opened on the mating end face of the sub-joint. This embedding method makes the rubber gasket accurately positioned and evenly stressed during mating, thus improving the reliability of the seal.

[0015] Preferably, in order to accommodate the rotation of the operating lever, the housing of the main connector is provided with an arc-shaped groove for the operating lever to pass through and rotate. The length of the arc-shaped groove simultaneously limits the rotation range and stroke of the operating lever.

[0016] Preferably, when the operating lever drives the rotating plate to rotate, the inner locking block, driven by the side wall of the arc-shaped through hole and guided by the through hole, moves radially along the through hole, thereby realizing the action of extending to lock or retracting to unlock.

[0017] Preferably, in order to improve the overall locking torque and connection stability, multiple straight holes, arc-shaped through holes, straight rods and inner connecting blocks are provided, and multiple inner connecting blocks can move synchronously to distribute the locking force evenly.

[0018] More preferably, the number of the grooves corresponds to the number of the inner connecting blocks, and they are evenly distributed along the inner circumference of the sub-connector to ensure that each of the multiple inner connecting blocks has a precise corresponding engaging position.

[0019] Preferably, in order to ensure the accuracy and coaxiality of the motion transition between the fixed plate and the rotating plate, the fixed plate and the rotating plate are arranged side by side and coaxially along the axial direction of the main joint.

[0020] This utility model has the following beneficial effects:

[0021] 1. This utility model, by setting an internal locking mechanism driven by an operating lever and cooperating with an external locking block, forms a double locking structure, which solves the problem that the quick connector in the prior art relies on a single buckle connection, is prone to accidental loosening under vibration or high pressure impact, and has poor safety and reliability. It achieves the technical effect of extremely firm connection, strong resistance to pull-out and vibration, and high safety level.

[0022] 2. This utility model provides a huge and lasting axial clamping force between the main connector and the auxiliary connector through a powerful internal and external double locking mechanism, so that the rubber gasket is fully and stably compacted. This solves the problem of insufficient locking force or pressure fluctuation causing the sealing gasket to fail and leak in the prior art, and achieves the technical effect of stable and reliable sealing performance, high pressure resistance and strong leakage prevention capability.

[0023] 3. This utility model cleverly converts the rotational motion of the operating lever into the synchronous radial linear motion of multiple internal locking blocks by setting a radial through hole on the fixed plate and an arc-shaped through hole on the rotating plate, and allowing the straight rod to pass through both simultaneously. This solves the problems of complex structure and low transmission efficiency required to achieve high-reliability locking in the prior art, and achieves the technical effect of ingenious structure, reliable transmission, and strong radial locking with a small operating torque. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of a quick-connect sealing connector for a flexible hose proposed in this utility model;

[0025] Figure 2 This is a schematic diagram of the main connector of a quick-connect sealing joint for hoses proposed in this utility model;

[0026] Figure 3 This is a schematic diagram of the structure of a secondary connector of a quick-connect sealing connector for a flexible hose proposed in this utility model;

[0027] Figure 4 This is a schematic diagram of the fixing plate of a quick-connect sealing joint for a flexible hose proposed in this utility model.

[0028] Legend:

[0029] 1. Quick-connect assembly; 101. Main connector; 102. Sub-connector; 103. Fixing plate; 104. Rotating plate; 105. Straight through hole; 106. Arc-shaped through hole; 107. Internal locking block; 108. Straight rod; 109. Operating rod; 1010. Groove; 1011. External locking block; 2. Rubber pad. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in 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 a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0031] Example:

[0032] Please refer to Figures 1 to 4 This utility model provides a quick-connect sealing connector for hoses, which aims to solve the problem that some hose connectors in the prior art have insufficient connection reliability and are prone to accidental loosening under vibration or high pressure impact.

[0033] like Figure 1 As shown, the quick-connect sealing connector for the hose includes a quick-connect assembly 1. The quick-connect assembly 1 includes a main connector 101 and a secondary connector 102 that can be detachably engaged with the main connector 101. External locking blocks 1011 are correspondingly provided on the outer walls of the main connector 101 and the secondary connector 102, which are used to achieve initial axial positioning and circumferential locking of the two connectors. (Refer to...) Figure 3 The mating end face of the sub-connector 102 is provided with a rubber gasket 2 for achieving fluid sealing after mating. In a preferred embodiment, the rubber gasket 2 is an annular gasket and is embedded in an annular groove opened on the mating end face of the sub-connector 102, providing a reliable sealing effect through extrusion deformation.

[0034] Please refer to Figure 2 and Figure 4 An internal mechanism for active locking is provided inside the main connector 101. This internal mechanism includes a fixed plate 103 fixedly connected inside the main connector 101, and a rotating plate 104 rotatably connected to the rear side of the fixed plate 103. The fixed plate 103 provides a fixed reference for subsequent moving parts, while the rotating plate 104 can rotate relative to the main connector 101 and the fixed plate 103. As a specific implementation structure, the fixed plate 103 and the rotating plate 104 are arranged side by side and coaxially along the axial direction of the main connector 101 to ensure the stability and accuracy of their movement.

[0035] To achieve the aforementioned active locking, the structure of this embodiment consists of holes opened in the fixed plate 103 and the rotating plate 104, and transmission and locking components passing through them. Please refer to the following for details. Figures 2 to 4 The structural fit and transmission relationship of the core locking mechanism are explained in detail:

[0036] The fixed plate 103 has a through hole 105 extending radially therein, and the rotating plate 104 has an arc-shaped through hole 106. These two holes are the key to realizing motion conversion. The quick-connect assembly 1 also includes a straight rod 108 that slides through the through hole 105 and the arc-shaped through hole 106. The radial outer end of the straight rod 108 is fixedly connected to an inner locking block 107. This structure makes the straight rod 108 constrained by the two holes at the same time, that is, it can only move in a straight line along the radial direction defined by the through hole 105, and it will also move along the trajectory of the arc-shaped through hole 106 as the rotating plate 104 rotates.

[0037] To drive the mechanism, an operating rod 109 is fixedly connected to the rotating plate 104 and extends through the main connector 101. When the external operator rotates the operating rod 109, the rotating plate 104 rotates accordingly. At this time, the side wall of the arc-shaped through hole 106 pushes the straight rod 108. Since the straight rod 108 is restricted in its direction of movement by the straight through hole 105 of the fixed plate 103, it can only convert the rotational motion into radial linear reciprocating motion, which drives the inner locking block 107 to achieve centripetal contraction or centrifugal extension.

[0038] At the same time, refer to Figure 3 The inner wall of the auxiliary connector 102 is provided with a groove 1010 for engaging the inner connector block 107. When the inner connector block 107 extends out in centrifugal motion, it can be precisely engaged in the groove 1010 to form a firm internal mechanical lock.

[0039] Based on the above embodiments, the present invention may further include the following preferred technical solutions:

[0040] In a preferred embodiment, in order to achieve quick external snap-fit ​​between the main connector 101 and the auxiliary connector 102, the external snap-fit ​​block 1011 includes a protrusion provided on the outer wall of the main connector 101 and an L-shaped guide groove provided on the outer wall of the auxiliary connector 102 for receiving and locking the protrusion. By aligning the protrusion with the opening of the L-shaped guide groove and rotating it, the initial external locking can be achieved.

[0041] As a specific implementation, in order to enable the operating lever 109 to be operated outside the main connector 101 while limiting its rotation range, an arc-shaped groove is provided on the housing of the main connector 101 for the operating lever 109 to pass through and rotate.

[0042] As a preferred embodiment, in order to improve the stability and locking force of the internal locking, multiple straight through holes 105, arc-shaped through holes 106, straight rods 108 and internal locking blocks 107 are provided. When multiple internal locking blocks 107 extend at the same time, the locking force can be evenly distributed on the circumference of the joint.

[0043] As a further complement to the above-mentioned multiple inner connecting blocks 107, the number of grooves 1010 corresponds to the number of inner connecting blocks 107, and is evenly distributed along the inner circumferential direction of the sub-connector 102, ensuring that each inner connecting block 107 can be accurately engaged in the corresponding groove 1010.

[0044] The working principle of this utility model of quick-connect sealing hose connector is as follows:

[0045] During the connection preparation stage, the operating lever 109 is rotated. The operating lever 109 is fixedly connected to the rotating plate 104 and drives the rotating plate 104 to rotate. Since the straight rod 108 slides through the straight hole 105 of the fixed plate 103 and the arc-shaped through hole 106 of the rotating plate 104, the rotation of the rotating plate 104 pushes the straight rod 108 through the side wall of the arc-shaped through hole 106. Under the radial constraint of the straight hole 105, the straight rod 108 performs a centripetal linear displacement, which in turn drives the inner connecting block 107 fixedly connected to the radial outer end of the straight rod 108 to retract inward into the main connector 101.

[0046] During the docking and external connection phase, align the main connector 101 with the auxiliary connector 102 and insert it, so that the rubber pad 2 on the auxiliary connector 102 contacts the end face of the main connector 101. Then rotate the main connector 101 or the auxiliary connector 102 so that the external locking blocks 1011 provided on the outer walls of both engage and lock with each other, completing the initial external fixation.

[0047] During the internal locking phase, the operating lever 109 is rotated in the opposite direction, causing the rotating plate 104 to rotate in the opposite direction. At this time, the side wall of the arc-shaped through hole 106 pushes the straight rod 108 to move centrifugally along the straight through hole 105, causing the inner connecting block 107 to extend outward and finally be engaged in the groove 1010 opened on the inner wall of the sub-connector 102. Through the external locking of the outer connecting block 1011 and the internal locking of the inner connecting block 107 and the groove 1010, double fastening is achieved. At the same time, the rubber pad 2 is pressed under strong axial pressure, achieving a reliable waterproof seal. Through this double locking structure, the present invention solves the problem of insufficient reliability of connector connection in the prior art.

[0048] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A quick-connect sealing connector for a hose, comprising a quick-connect assembly (1), the quick-connect assembly (1) comprising a main connector (101) and a secondary connector (102) detachably cooperating with the main connector (101), the outer walls of the main connector (101) and the secondary connector (102) being provided with corresponding external locking blocks (1011) that engage with each other, and the mating end face of the secondary connector (102) being provided with a rubber gasket (2) for sealing; Its features are, The main connector (101) is internally fixedly connected to a fixing plate (103), and a rotating plate (104) is rotatably connected to the axial rear side of the fixing plate (103). The fixing plate (103) is provided with a straight through hole (105) extending radially therein, and the rotating plate (104) is provided with an arc-shaped through hole (106). The quick-connect assembly (1) further includes a straight rod (108) that slides through the straight through hole (105) and the arc-shaped through hole (106). The radial outer end of the straight rod (108) is fixedly connected to an inner connecting block (107). An operating rod (109) that passes through the main connector (101) is fixedly connected to the rotating plate (104). The inner wall of the sub-connector (102) is provided with a groove (1010) for engaging the inner connecting block (107).

2. The quick-connect sealing connector for flexible hoses according to claim 1, characterized in that, The external locking block (1011) includes a protrusion disposed on the outer wall of the main connector (101) and an L-shaped guide groove disposed on the outer wall of the sub-connector (102) for receiving and locking the protrusion.

3. The quick-connect sealing connector for flexible hoses according to claim 1, characterized in that, The rubber pad (2) is an annular gasket and is embedded in the annular groove opened on the mating end face of the sub-connector (102).

4. The quick-connect sealing connector for flexible hoses according to claim 1, characterized in that, The housing of the main connector (101) has an arc-shaped groove for the operating rod (109) to pass through and rotate.

5. The quick-connect sealing connector for flexible hoses according to claim 1, characterized in that, When the rotating plate (104) rotates, the inner connecting block (107) is driven by the side wall of the arc-shaped through hole (106) and moves radially linearly along the straight through hole (105).

6. The quick-connect sealing connector for flexible hoses according to claim 1, characterized in that, Multiple straight through holes (105), arc-shaped through holes (106), straight rods (108), and internal connecting blocks (107) are provided.

7. The quick-connect sealing connector for hoses according to claim 6, characterized in that, The number of the grooves (1010) corresponds to the number of the inner connecting blocks (107) and is evenly distributed along the inner circumferential direction of the sub-connector (102).

8. The quick-connect sealing connector for hoses according to claim 1, characterized in that, The fixed plate (103) and the rotating plate (104) are arranged side by side and coaxially along the axial direction of the main joint (101).

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