CQC connector

Abstract

The utility model relates to the technical field of connecting devices, in particular to a CQC connector which comprises a first pipe fitting, a second pipe fitting and a locking assembly, the locking assembly is used for connecting the first pipe fitting and the second pipe fitting, at least part of the second pipe fitting is inserted into the locking assembly and the first pipe fitting, and the locking assembly comprises an unlocking piece and a locking piece. After the locking piece and the first pipe fitting are assembled, the locking piece and the first pipe fitting are mutually fixed in the circumferential direction and the axial direction, the unlocking piece is connected with the second pipe fitting through a clamping structure, the unlocking piece is arranged on the locking piece, and a stroke limiting structure used for limiting the displacement stroke of the unlocking piece is arranged between the unlocking piece and the locking piece. According to the utility model, convenient and reliable connection between the first pipe fitting and the second pipe fitting is realized through the arrangement of the locking assembly, and the connecting structure has the advantages of simple structure, convenient operation, stable and reliable connection and the like, and is suitable for various occasions needing to connect the pipe fittings.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of connecting device, specifically, relate to a CQC joint. BACKGROUND

[0002] The traditional CQC joint often needs to use additional tools or steps to realize locking during the installation process, which not only increases the assembly time and the complexity of installation, but also may cause the locking to be not firm, affects the sealing and stability of the joint, and further affects the work efficiency.

[0003] In addition, the traditional CQC joint also needs special tools or methods when disassembling, further increasing the complexity of operation.

[0004] Therefore, it is particularly important to develop a CQC joint with simple structure, firm locking, automatic locking and easy disassembly. SUMMARY

[0005] In view of this, the utility model relates to a CQC joint, which aims to solve the above technical problems.

[0006] The utility model relates to a CQC joint, which comprises a first pipe fitting, a second pipe fitting and a locking assembly, the locking assembly is used for connecting the first pipe fitting and the second pipe fitting, at least part of the second pipe fitting is inserted into the locking assembly and the first pipe fitting, the locking assembly comprises an unlocking piece and a locking piece, the locking piece is fixed with the first pipe fitting in the circumferential and axial directions after assembly, and the unlocking piece is connected with the second pipe fitting through a clamping structure, the unlocking piece is arranged on the locking piece, and a stroke limiting structure for limiting the displacement stroke of the unlocking piece is arranged between the unlocking piece and the locking piece.

[0007] In some embodiments of the application, at least part of the unlocking piece extends into the radial through hole of the locking piece, at least part of the stroke limiting structure is arranged on the unlocking piece, and the remaining part is arranged on the hole wall of the radial through hole, a pressing part is arranged at the outer end of the unlocking piece, a resilient arm integrally formed with the pressing part is arranged on the pressing part, and the free end of the resilient arm abuts against the locking piece and / or the first pipe fitting.

[0008] In some embodiments of the application, the resilient arm is arc-shaped and two resilient arms are arranged.

[0009] In some embodiments of the application, the stroke limiting structure comprises a limiting groove and a limiting protrusion, either one of the limiting groove and the limiting protrusion is arranged on the unlocking piece, and the remaining one is arranged on the hole wall of the radial through hole.

[0010] In some embodiments of the present application, the clamping structure comprises a clamping protrusion and a clamping groove matched with each other, any one of the clamping protrusion and the clamping groove is arranged on the outer wall of the second pipe fitting, and the remaining one is arranged on the hole wall of the axial through hole of the unlocking member.

[0011] In some embodiments of the present application, the locking member is axially provided with a first through hole for the insertion of the second pipe fitting, and the periphery of the first through hole is provided with a clamping protrusion or a clamping groove.

[0012] In some embodiments of the present application, the second pipe fitting is sequentially provided with a first sealing member, a spacer ring and a second sealing member between the one end of the second pipe fitting penetrating into the inner cavity of the first pipe fitting and the first pipe fitting.

[0013] In some embodiments of the present application, the locking member and the first pipe fitting are circumferentially locked and matched through a guide structure, and the locking member and the first pipe fitting are also axially locked and matched through an axial fixing structure.

[0014] In some embodiments of the present application, the guide structure comprises a guide rib and a guide groove, any one of the guide rib and the guide groove is arranged on the side wall of the locking member penetrating into the inner cavity of the first pipe fitting, and the remaining one is arranged on the side wall of the first pipe fitting.

[0015] In some embodiments of the present application, the axial fixing structure comprises at least one boss and at least one groove, any one of the boss and the groove is arranged on the side wall of the locking member penetrating into the inner cavity of the first pipe fitting, and the remaining one is arranged on the side wall of the first pipe fitting.

[0016] Compared with the prior art, the CQC joint provided by the utility model realizes convenient and reliable connection between the first pipe fitting and the second pipe fitting through the arrangement of the locking assembly, improves the stability and sealing performance of the connection, effectively limits the displacement stroke of the unlocking member through the stroke limiting structure between the unlocking member and the locking member, avoids accidental disengagement of the unlocking member during the locking process, ensures the reliability of the locking, and simultaneously realizes automatic locking and unlocking of the unlocking member and the second pipe fitting through the arrangement of the elastic arm, simplifies the assembly process, and improves the work efficiency. In addition, the arrangement of the guide structure and the axial fixing structure further improves the connection stability between the first pipe fitting and the second pipe fitting, so that the CQC joint can still maintain a good connection state when bearing a large pressure or torque. In summary, the CQC joint of the utility model has the advantages of simple structure, convenient operation, stable and reliable connection, and is suitable for various occasions requiring connected pipe fittings. BRIEF DESCRIPTION OF DRAWINGS

[0017] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments with reference made to the accompanying drawings. The drawings are for purposes of illustration only and are not intended to limit the application thereto. The same reference numerals in different drawings denote the same or similar components. In the drawings:

[0018] Figure 1 A schematic view of the overall structure of a CQC joint according to an embodiment of the present application is provided;

[0019] Figure 2 An exploded view of a CQC joint according to an embodiment of the present application is provided;

[0020] Figure 3 A schematic view of the structure of an unlocking member according to an embodiment of the present application is provided;

[0021] Figure 4 A schematic view of the structure of a locking member according to an embodiment of the present application is provided;

[0022] Figure 5 A sectional view of a CQC joint according to an embodiment of the present application is provided.

[0023] In the drawings: 1, first pipe fitting; 2, second pipe fitting; 31, unlocking member; 311, pressing portion; 312, elastic arm; 313, axial through hole; 32, locking member; 321, radial through hole; 322, first through hole; 41, first sealing member; 42, spacer ring; 43, second sealing member; 51, clamping protrusion; 52, clamping groove; 61, limiting groove; 62, limiting protrusion; 71, guide rib; 72, guide groove; 81, boss; 82, groove. DETAILED DESCRIPTION

[0024] The specific embodiments of the present application will be further described in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but are not used to limit the scope of the present application.

[0025] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0026] The terms "first", "second", "third", etc. are used only for descriptive purposes and do not imply or suggest a relative importance or an implicit indication of the number of the technical features indicated. Thus, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified and limited.

[0027] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] In combination with Figures 1-5 As shown, the CQC joint provided by the embodiment includes a first pipe 1, a second pipe 2 and a locking assembly. The locking assembly is used to connect the first pipe 1 and the second pipe 2. At least part of the second pipe 2 is inserted into the locking assembly and the first pipe 1. The locking assembly includes an unlocking piece 31 and a locking piece 32. The locking piece 32 is fixed with the first pipe 1 in the circumferential and axial directions after assembly. The unlocking piece 31 is connected with the second pipe 2 through a clamping structure. The unlocking piece 31 is arranged on the locking piece 32, and a stroke limiting structure is arranged between the unlocking piece 31 and the locking piece 32 to limit the displacement stroke of the unlocking piece 31.

[0029] It can be understood that the CQC joint in the embodiment realizes the effective connection of the first pipe 1 and the second pipe 2 through the use of the locking assembly, while maintaining the compactness of the overall structure. At least part of the second pipe 2 is inserted into the locking assembly and the first pipe 1, which simplifies the installation process and improves the installation efficiency. The locking piece 32 is fixed with the first pipe 1 in the circumferential and axial directions, which ensures the stability and reliability of the joint and reduces the risk of loosening caused by vibration or external force. The unlocking piece 31 is connected with the second pipe 2 through a clamping structure, which allows quick unlocking when needed, facilitating maintenance and replacement of the pipe. The stroke limiting structure limits the displacement stroke of the unlocking piece 31, ensuring the safety of the operation and the correct position of the unlocking piece 31, preventing damage caused by excessive operation. At the same time, limiting the displacement stroke of the unlocking piece 31 avoids accidental disengagement of the unlocking piece 31 during the locking process.

[0030] It can be understood that the CQC joint in the embodiment improves the safety of the overall connection and reduces potential safety hazards due to the reliable fixation and convenient unlocking design of the locking assembly. At the same time, it can be suitable for connection of various pipes, and has good universality and adaptability.

[0031] In one specific embodiment of the present application, at least part of the unlocking member 31 extends into the radial through hole 321 of the locking member 32, at least part of the stroke limiting structure is arranged on the unlocking member 31, and the remaining part is arranged on the hole wall of the radial through hole 321. A pressing portion 311 is arranged at the outer end of the unlocking member 31, and a resilient arm 312 integrally formed with the pressing portion 311 is arranged on the pressing portion 311. The free end of the resilient arm 312 abuts against the locking member 32 and / or the first pipe member 1.

[0032] It can be understood that the arrangement of the stroke limiting structure in the present embodiment ensures the movement range of the unlocking member 31 during operation, prevents damage or misoperation caused by excessive movement, realizes stable connection while avoiding accidental disengagement of the unlocking member 31 during locking, and ensures the reliability of locking. The arrangement of the pressing portion 311 enables the user to conveniently control the action of the unlocking member 31 through pressing operation, thereby improving the convenience of use.

[0033] Specifically, when the free end of the resilient arm 312 abuts against the locking member 32 and / or the first pipe member 1, a stable support force can be provided to ensure the stability of the unlocking member 31 during unlocking. Meanwhile, when an external force is applied to the pressing portion 311, the resilient arm 312 is stretched, the unlocking member 31 moves in the direction of the locking member 32 within the range of the stroke limiting structure to realize unlocking, at this time the second pipe member 2 can be inserted or removed, and after the external force is removed, the inertia of the resilient arm 312 drives the unlocking member 31 to move outward within the range of the stroke limiting structure to realize the locking of the first pipe member 1 and the second pipe member 2.

[0034] In one specific embodiment of the present application, the resilient arm 312 is arc-shaped and two resilient arms 312 are arranged.

[0035] It can be understood that the arc-shaped resilient arms 312 arranged in an "eight" shape in the present embodiment can provide uniform and symmetrical elastic force to ensure the stability and balance of the device during use. In addition, the arc-shaped resilient arms 312 can better adapt to components of different sizes and shapes, providing more flexible adaptability. The "eight" shape distribution of the two resilient arms 312 helps to disperse pressure and reduce wear or damage caused by excessive pressure at a single point, thereby prolonging the service life of the device.

[0036] In one specific embodiment of the present application, the stroke limiting structure includes a limiting groove 61 and a limiting protrusion 62, either one of the limiting groove 61 and the limiting protrusion 62 is arranged on the unlocking member 31, and the remaining one is arranged on the hole wall of the radial through hole 321.

[0037] It can be understood that the stroke limiting structure in the embodiment can ensure that the unlocking piece 31 reaches the predetermined stroke limit during movement, prevent damage or malfunction caused by excessive movement, and improve the reliability and safety of the device.

[0038] In an embodiment of the present application, the clamping structure includes a clamping protrusion 51 and a clamping groove 52 that cooperate with each other. Either of the clamping protrusion 51 and the clamping groove 52 is arranged on the outer wall of the second pipe 2, and the other is arranged on the hole wall of the axial through hole 313 of the unlocking piece 31.

[0039] It can be understood that the arrangement of the clamping structure in the embodiment can realize quick connection and separation between the second pipe 2 and the unlocking piece 31, thereby facilitating assembly and maintenance. At the same time, the cooperation of the clamping structure can provide sufficient mechanical strength to ensure the stability and reliability of the connection during use. In addition, the simple design of the clamping structure also helps to reduce production costs and is easy to realize automatic assembly, thereby improving production efficiency.

[0040] In an embodiment of the present application, the locking piece 32 is axially provided with a first through hole 322 for insertion of the second pipe 2, and the periphery of the first through hole 322 is provided with a clamping protrusion 51 or a clamping groove 52.

[0041] Specifically, the unlocking piece 31 in the embodiment is first connected with the locking piece 32 arranged on the first pipe 1 through the stroke limiting structure to form a locking assembly. When the second pipe 2 and the first pipe 1 are assembled, one end of the second pipe 2 passes through the first through hole 322 and extends into the locking assembly. The second pipe 2 and the unlocking piece 31 are clamped and fixed through the clamping structure, thereby realizing the assembly of the second pipe 2 and the second pipe 2.

[0042] In an embodiment of the present application, the second pipe 2 passes through the locking assembly and extends into the inner cavity of the first pipe 1. A first sealing piece 41, a spacer ring 42, and a second sealing piece 43 are arranged in sequence between one end of the second pipe 2 and the first pipe 1.

[0043] Specifically, the sealing piece in the embodiment is preferably a sealing ring, which is not specifically limited in the embodiment.

[0044] It can be understood that, in the embodiment, the first sealing member 41 and the second sealing member 43 are arranged between the first pipe 1 and the second pipe 2, so that the leakage of liquid or gas can be effectively prevented, and the sealing of the system is ensured. The spacer ring 42 can play a supporting and protecting role, avoiding direct contact between the first pipe 1 and the second pipe 2, reducing wear and tear, and prolonging the service life. The locking assembly can ensure that the connection between the second pipe 2 and the first pipe 1 is more stable, preventing loosening or falling off, and improving the reliability of the overall structure. Due to the arrangement of the sealing member and the spacer ring 42, maintenance and replacement are more convenient, and maintenance cost and time are reduced. Through the combination of multiple sealing and the spacer ring 42, the pressure resistance of the entire connection part can be improved, which is suitable for high-pressure environments.

[0045] In an embodiment of the present application, the locking member 32 and the first pipe 1 are circumferentially locked and matched through a guide structure; and the locking member 32 and the first pipe 1 are also axially locked and matched through an axial fixing structure.

[0046] It can be understood that, in the embodiment, the locking member 32 and the first pipe 1 are circumferentially locked and matched through a guide structure, ensuring their stable connection in the rotation direction and avoiding circumferential rotation. At the same time, the locking member 32 and the first pipe 1 are also axially locked and matched through an axial fixing structure, ensuring their fixation in the length direction and preventing axial movement. Because the guide structure and the axial fixing structure can work simultaneously, not only the reliability of the connection is improved, but also the assembly process can be simplified, and the number of components that need to be operated separately can be reduced.

[0047] In an embodiment of the present application, the guide structure includes a guide rib 71 and a guide groove 72, and any one of the guide rib 71 and the guide groove 72 is arranged on the side wall of the locking member 32 extending into the inner cavity of the first pipe 1, and the remaining one is arranged on the side wall of the first pipe 1.

[0048] Specifically, the guide structure in the embodiment is provided with at least one set, which is not specifically limited in the embodiment.

[0049] It can be understood that, in the embodiment, the guide rib 71 and the guide groove 72 are arranged in such a way that the locking member 32 is guided during movement, thereby reducing the possibility of friction and jamming, and improving the overall mechanical properties and the reliability of operation. By arranging the guide rib 71 or the guide groove 72 on the locking member 32, and arranging the corresponding guide groove 72 or guide rib 71 on the side wall of the first pipe 1, the movement path of the locking member 32 can be accurately controlled, and the smoothness of the locking member 32 when extending into and withdrawing from the inner cavity of the first pipe 1 can be ensured.

[0050] In an embodiment of the present application, the axial fixing structure comprises at least one boss 81 and at least one groove 82, any one of the boss 81 and the groove 82 is arranged on the side wall of the locking member 32 extending into the inner cavity of the first pipe 1, and the other one is arranged on the side wall of the first pipe 1. The boss 81 is clamped in the corresponding groove 82 to achieve the axial fixation of the first pipe 1 and the locking member 32.

[0051] It can be understood that in the present embodiment, the boss 81 cooperates with the groove 82 to achieve the axial fixation between the first pipe 1 and the locking member 32 by clamping, preventing the locking member 32 from moving axially during use, thereby improving the stability and reliability of the overall structure.

[0052] Specifically, the locking member 32 in the present embodiment has a four-way symmetrical structure, allowing more freedom during installation, and the unlocking member 31 can be assembled from any side of the radial through hole 321 of the locking member 32, avoiding the risk of misassembly.

[0053] Specifically, the assembly process of a CQC joint in the present embodiment is as follows:

[0054] First, the locking member 32 is assembled on the first pipe 1, and the locking member 32 and the first pipe 1 are fixed in the axial and circumferential directions by the guide structure and the axial fixing structure.

[0055] Second, one end of the unlocking member 31 is inserted into the radial through hole 321 of the locking member 32, and the unlocking member 31 and the locking member 32 are connected by the stroke limiting structure. At the same time, the first through hole 322 of the locking member 32 and the axial through hole 313 of the unlocking member 31 at least partially overlap, and the first through hole 322 of the locking member 32 and the axial through hole 313 of the unlocking member 31 are in communication with the inner cavity of the first pipe 1 in the axial direction.

[0056] Finally, one end of the second pipe 2 provided with the clamping protrusion 51 or the clamping groove 52 is inserted into the locking assembly, the second pipe 2 passes through the axial through hole 313 of the unlocking member 31, and the unlocking member 31 is pushed open so that the axial through hole 313 of the unlocking member 31 covers the first through hole 322 of the locking member 32. At this time, the elastic arm 312 at the outer end of the unlocking member 31 is forced to be stretched, and when the clamping protrusion 51 or the clamping groove 52 of the second pipe 2 contacts and assembles with the clamping protrusion 51 or the clamping groove 52 of the unlocking member 31, the unlocking member 31 is no longer forced, and the restoring force of the elastic arm 312 of the unlocking member 31 returning to the original state achieves the locking of the second assembly and the first assembly. That is, when the pressing part 311 of the unlocking member 31 is forced, the first pipe 1 and the second pipe 2 are unlocked, and the first pipe 1 can be inserted and removed. When the pressing part 311 is not forced, the first pipe 1 and the second pipe 2 are automatically locked.

[0057] Those skilled in the art can understand that the above only describes the preferred embodiments of the present application, and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A CQC joint comprising a first pipe element (1), a second pipe element (2) and a locking assembly for engaging the first pipe element (1) and the second pipe element (2), at least a part of the second pipe element (2) being inserted into the locking assembly and the first pipe element (1), characterized in that The locking assembly comprises an unlocking member (31) and a locking member (32), the locking member (32) is fixed with the first pipe member (1) in the circumferential and axial directions after being assembled with the first pipe member (1), and the unlocking member (31) is connected with the second pipe member (2) through a clamping structure, the unlocking member (31) is arranged on the locking member (32), and the unlocking member (31) and the locking member (32) are provided with a stroke limiting structure for limiting the displacement stroke of the unlocking member (31).

2. A CQC joint according to claim 1, characterized in that At least part of the unlocking member (31) extends into a radial through hole (321) of the locking member (32), at least part of the stroke limiting structure is arranged on the unlocking member (31), and the remaining part is arranged on the hole wall of the radial through hole (321), a pressing portion (311) is arranged at the outer end of the unlocking member (31), a resilient arm (312) which is integrally formed with the pressing portion (311) is arranged on the pressing portion (311), and the free end of the resilient arm (312) abuts against the locking member (32) and / or the first pipe member (1).

3. A CQC joint according to claim 2, wherein, The resilient arm (312) is arc-shaped and two resilient arms (312) are arranged.

4. A CQC joint according to claim 2, wherein, The stroke limiting structure comprises a limiting groove (61) and a limiting protrusion (62), and any one of the limiting groove (61) and the limiting protrusion (62) is arranged on the unlocking member (31), and the remaining one is arranged on the hole wall of the radial through hole (321).

5. A CQC joint according to claim 1, wherein, The clamping structure comprises a clamping protrusion (51) and a clamping groove (52) which are matched with each other, and any one of the clamping protrusion (51) and the clamping groove (52) is arranged on the outer wall of the second pipe member (2), and the remaining one is arranged on the hole wall of the axial through hole (313) of the unlocking member (31).

6. A CQC joint according to claim 5, wherein, The locking member (32) is provided with a first through hole (322) in the axial direction for the insertion of the second pipe member (2), and the periphery of the first through hole (322) is provided with the clamping protrusion (51) or the clamping groove (52).

7. A CQC joint according to claim 1, wherein, One end of the second pipe member (2) which extends into the inner cavity of the first pipe member (1) through the locking assembly is provided with a first sealing member (41), a spacing ring (42) and a second sealing member (43) in sequence.

8. A CQC joint according to claim 1, wherein, The locking member (32) and the first pipe member (1) are circumferentially locked and matched through a guide structure, and the locking member (32) and the first pipe member (1) are also axially locked and matched through an axial fixing structure.

9. A CQC joint according to claim 8, wherein, The guide structure comprises a guide rib (71) and a guide groove (72), and any one of the guide rib (71) and the guide groove (72) is arranged on the side wall of the locking member (32) which extends into the inner cavity of the first pipe member (1), and the remaining one is arranged on the side wall of the first pipe member (1).

10. A CQC joint according to claim 8, wherein, The axial fixing structure comprises at least one boss (81) and at least one groove (82), and any one of the boss (81) and the groove (82) is arranged on the side wall of the locking member (32) which extends into the inner cavity of the first pipe member (1), and the remaining one is arranged on the side wall of the first pipe member (1).

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