Non-detachable quick-plug connector

Abstract

The utility model provides a non-detachable quick plug connector, and belongs to the technical field of automobile parts. The locking device comprises a shell, a locking ring and a positioning sealing piece. Firstly, the positioning sealing piece and the locking ring are sequentially installed in the shell from bottom to top, the positioning sealing piece is arranged on the bearing table, the top of the positioning sealing piece is connected with the bottom of the locking ring, and due to the fact that the locking ring is provided with the limiting part, clamping connection of the locking ring and the shell is achieved. When the male plug is inserted into the locking ring, the locking structure is used for abutting against the locking boss on the peripheral side of the male plug after the male plug is inserted into the shell so that the male plug can be clamped and locked in the shell, and therefore the non-detachable quick-plug connector is formed. In addition, the male plug can be locked in the radial direction, movement of the male plug is limited, and leakproofness and coaxiality of connection between the male plug and the lock ring and leakproofness between the lock ring and the shell are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automotive parts, and particularly relates to a non-detachable quick connector. Background Art

[0002] In order to avoid the need for OBD (On Board Diagnostics) diagnostic technology monitoring after a vehicle uses a PCV (Positive Crankcase Ventilation) crankcase forced ventilation system, a diagnostic quick connector or a non-detachable quick connector can be used to meet the detection exemption requirements of the mandatory standard (i.e., an exemption quick connector).

[0003] In the prior art, the exemption quick connector includes a quick connector housing and a snap ring; the snap ring is located between the male plug and the quick connector housing after the male plug is inserted into the quick connector housing. The male plug is provided with a locking boss, and the locking boss is arranged along the outer peripheral side of the male plug; and the male plug is locked in the quick connector housing. The quick connector housing has a locking structure, and the locking structure locks the snap ring in the quick connector housing after the male plug is inserted into the quick connector housing. A part of the quick connector housing forms a pull tab structure, and the pull tab structure is located between the end of the quick connector housing away from the snap ring and the locking structure. Among them, the pulling of the pull tab structure can cause the two parts of the quick connector housing on both sides of the pull tab structure to be separated.

[0004] However, since the bottom of the snap ring is directly in contact with the inner cavity of the quick connector housing, when the exemption quick connector is installed on a vehicle, due to human factors or vibrations and other factors, the gap between the snap ring and the quick connector housing and the gap between the male plug and the snap ring become larger and larger, ultimately resulting in a decrease in the coaxiality between the male plug and the quick connector housing and a decrease in the sealing performance. Summary of the Utility Model

[0005] The embodiment of the utility model provides a non-detachable quick connector, aiming to solve the technical problem in the prior art that due to human factors or vibrations and other factors, the gap between the snap ring and the quick connector housing and the gap between the male plug and the snap ring become larger and larger, resulting in a decrease in the coaxiality between the male plug and the quick connector housing and a decrease in the sealing performance.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a non-detachable quick-plug connector including a shell, a locking ring and a positioning seal. A plug hole is provided in the middle of the shell, and the plug hole is used to accommodate a male plug. A limiting boss and a supporting platform are provided in the shell. The locking ring is coaxially arranged with the shell, and the locking ring is sleeved between the shell and the male plug. The locking ring is provided with a locking structure and a limiting portion arranged along the outer peripheral side of the locking ring, and the limiting portion is arranged below the locking structure. The positioning seal is coaxially arranged with the shell, and the positioning seal is arranged between the locking ring and the shell.

[0007] In a possible implementation, a guide groove is provided on the inner wall of the shell, and a guide strip matched with the guide groove is provided on the outer wall of the lock ring.

[0008] In a possible implementation, the locking structure is an elastic buckle protruding inwardly.

[0009] In a possible implementation, the elastic buckle includes a fixed end and a free end. The fixed end is fixed on the lock ring. One end of the free end is connected to the fixed end, and the free end is bent along the diameter direction of the lock ring toward the axial direction of the lock ring. The free end is used to press against the locking boss on the outer edge of the male plug after the male plug is inserted into the housing to lock the male plug in the housing.

[0010] In a possible implementation, a detachable opening corresponding to the elastic buckle is provided on a side of the shell.

[0011] In a possible implementation, the demolition opening is a U-shaped groove, and the portion of the shell located between the U-shaped grooves forms a demolition baffle.

[0012] In a possible implementation, the positioning seal comprises a positioning ring and a first sealing ring. The positioning ring is coaxially arranged with the locking ring, and the positioning ring is arranged on the supporting platform. The first sealing ring is arranged between the positioning ring and the bottom of the locking ring.

[0013] In a possible implementation, a second sealing ring is further provided between the positioning ring and the supporting platform.

[0014] In a possible implementation, there are two elastic buckles, and the two elastic buckles are spaced apart along the outer circumference of the locking ring.

[0015] In a possible implementation, the elastic buckle and the limiting portion of the locking ring are integrally injection molded with the locking ring body.

[0016] In the embodiment of the present application, compared with the prior art, a non-detachable quick-connect connector includes a housing, a locking ring and a positioning seal. First, a positioning seal and a locking ring are sequentially installed from bottom to top in the housing, the positioning seal is arranged on a support platform, the top of the positioning seal is connected to the bottom of the locking ring, and the locking ring is connected to the housing due to the limit portion arranged on the locking ring. When the male plug is inserted into the locking ring, the locking structure is used to press against the locking boss on the outer peripheral side of the male plug after the male plug is inserted into the housing to lock the male plug in the housing, thereby forming a non-detachable quick-connect connector. The positioning seal not only fills the gap between the bottom of the locking ring and the housing support platform, but also can radially lock the male plug, limit the movement of the male plug, improve the airtightness and coaxiality of the connection between the male plug and the locking ring, and the airtightness between the locking ring and the housing, and avoid the problem of long-term wear between the male plug and the locking ring due to human factors or vibrations after loading, which reduces the coaxiality and sealing between the male plug and the locking ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A structural cross-sectional view of a non-detachable quick-connect connector connected to a male plug provided by an embodiment of the utility model;

[0018] Figure 2 A structural cross-sectional view of a non-detachable quick-connect connector provided in an embodiment of the utility model;

[0019] Figure 3 An axonometric view of a housing is provided for an embodiment of the utility model;

[0020] Figure 4 An axonometric view of a locking ring is provided for an embodiment of the utility model;

[0021] Description of reference numerals:

[0022] 1. Shell; 11. Limiting boss; 12. Guide groove; 13. Breaking baffle; 14. U-shaped groove; 15. Supporting platform;

[0023] 2. Lock ring; 21. Limiting part; 22. Elastic buckle; 221. Fixed end; 222. Free end; 23. Guide strip;

[0024] 3. Male plug; 32. Locking boss;

[0025] 4. Positioning seal; 41. First sealing ring; 42. Positioning ring; 43. Second sealing ring. DETAILED DESCRIPTION

[0026] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] It should be further noted that the drawings and embodiments of the present invention mainly describe and illustrate the concept of the present invention. On the basis of this concept, the specific forms and settings of some connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be completely described. However, on the premise that those skilled in the art understand the concept of the present invention, those skilled in the art can implement the above specific forms and settings in a well-known manner.

[0028] When an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0029] The orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. 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 should not be construed as a limitation to the present invention.

[0030] The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "a plurality" is two or more, and the meaning of "several" is one or more, unless otherwise specifically defined.

[0031] Please refer to Figures 1 to 2 , and now a non-detachable quick-connect fitting provided by the present utility model will be described.

[0032] A non-detachable quick-plug connector includes a housing 1, a locking ring 2 and a positioning seal 4. A locking boss 32 is provided on the male plug 3, and the locking boss 32 is arranged along the outer peripheral side of the male plug 3; a plug hole is provided in the middle of the housing 1, and the plug hole is used to accommodate the male plug 3, and a limiting boss 11 and a supporting platform 15 are provided in the housing 1; the locking ring 2 is coaxially arranged with the housing 1, and the locking ring 2 is sleeved between the housing 1 and the male plug 3, and a locking structure and a limiting portion 21 arranged along the outer peripheral side of the locking ring 2 are provided on the locking ring 2, and the limiting portion 21 is arranged below the locking structure; the positioning seal 4 is coaxially arranged with the housing 1, and is arranged between the supporting platform 15 and the locking ring 2.

[0033] As a specific embodiment of the present application, the positioning seal 4 is disposed between the supporting platform 15 and the locking ring 2 , the bottom of the positioning seal 4 abuts against the supporting platform 15 , and the top of the positioning seal 4 is connected to the bottom of the locking ring 2 .

[0034] Compared with the prior art, the utility model is a non-detachable quick-plug connector including a housing 1, a locking ring 2 and a positioning seal 4. First, the positioning seal 4 and the locking ring 2 are sequentially installed from bottom to top in the housing 1, the positioning seal 4 is arranged on the supporting platform 15, the top of the positioning seal 4 is connected to the bottom of the locking ring 2, and the locking ring 2 is provided with a limiting portion 21, so that the locking ring 2 and the housing 1 are clamped; when the male plug 3 is inserted into the locking ring 2, the locking structure is used to press against the locking boss 32 on the outer peripheral side of the male plug 3 after the male plug 3 is inserted into the housing 1 to lock the male plug 3 in the housing 1, thereby forming a non-detachable quick-plug connector to avoid problems such as loosening or falling off due to human factors or other factors such as vibration after loading. The setting of the positioning seal 4 not only fills the gap between the bottom of the locking ring 2 and the supporting platform 15 on the shell 1, but also can radially lock the male plug 3, limit the shaking of the male plug 3, improve the airtightness and coaxiality of the connection between the male plug 3 and the locking ring 2, and the airtightness between the locking ring 2 and the shell 1, and avoid the problem of reduced coaxiality and reduced sealing between the male plug 3 and the locking ring 2 due to long-term wear between the male plug 3 and the locking ring 2 due to human or vibration and other factors after loading.

[0035] See also Figure 3 and Figure 4 In order to facilitate the smooth assembly of the shell 1 and the locking ring 2, a guide groove 12 is provided on the inner wall of the shell 1, and a guide strip 23 adapted to the guide groove 12 is provided on the outer wall of the locking ring 2. During the assembly process of the locking ring 2 and the shell 1, the operator only needs to align the guide strip 23 with the guide groove 12 without adjusting the installation angle. The locking ring 2 also has the feature of preventing errors.

[0036] See also Figure 4 Furthermore, the locking structure is an elastic buckle 22 protruding inward.

[0037] See also Figure 2, specifically, the elastic buckle 22 includes a fixed end 221 and a free end 222. The fixed end 221 is fixedly arranged on the locking ring 2; one end of the free end 222 is connected to the fixed end 221, and the free end 222 bends along the diameter direction of the locking ring 2 towards the axis direction of the locking ring 2; the free end 222 is used to abut against the locking boss 32 on the outer edge of the male plug 3 after the male plug 3 is inserted into the housing 1 to lock the male plug 3 in the housing 1.

[0038] When the male plug 3 is inserted into the locking ring 2, since the elastic buckle 22 includes a fixed end 221 and a free end 222, the locking boss 32 of the male plug 3 squeezes the free end 222, so as to be smoothly inserted into the locking ring 2; after the male plug 3 is inserted, since the free end 222 bends along the diameter direction of the locking ring 2 towards the axis direction of the locking ring 2, the free end 222 abuts against the locking boss 32 on the outer edge of the male plug 3 to lock the male plug 3 in the housing 1 and prevent the male plug 3 from detaching from the locking ring 2.

[0039] Please refer to Figure 3 , based on the disassembly requirement of the male plug 3 under specific circumstances, on the basis of the above non-detachable quick-connect joint, a breakage opening corresponding to the elastic buckle 22 is provided on the side of the housing 1. The setting of the breakage opening enables the side wall of the housing 1 to be forcibly broken at this place by means of a tool, and further enables the elastic buckle 22 and the locking boss 32 to be unlocked, and further enables the external male end to withdraw.

[0040] Furthermore, if the locking ring 2 still cannot be smoothly withdrawn after forcibly damaging the side wall of the housing 1 through the breakage opening, at this time, the side wall of the housing 1 can be further broken open and the elastic buckle 22 can be forcibly damaged by means of a tool, so that the male plug 3 can be smoothly detached from the locking ring 2. Based on this disassembly requirement, the breakage opening of this application is designed as a U-shaped groove 14, and the part of the housing 1 between the U-shaped grooves 14 forms a breakage baffle 13. The operator only needs to insert a tool into the U-shaped groove 14 to easily break the breakage baffle 13 from the housing 1, thereby increasing the breakage area of the breakage opening, so that the male plug 3 can be smoothly detached from the locking ring 2.

[0041] The positioning seal 4 includes a positioning ring 42 and a first sealing ring 41. The positioning ring 42 is coaxially arranged with the locking ring 2, and the positioning ring 42 is arranged on the supporting platform 15; the first sealing ring 41 is arranged between the positioning ring 42 and the bottom of the locking ring 2. A groove is provided in the upper part of the positioning ring 42 for accommodating the first sealing ring 41. When the male plug 3 is inserted into the locking ring 2, the gap between the bottom of the locking ring 2 and the supporting platform 15 of the housing 1 can be filled due to the provision of the positioning ring 42 and the first sealing ring 41, thereby improving the tightness of the connection between the male plug 3 and the locking ring 2.

[0042] Further, a second sealing ring 43 is also provided between the positioning ring 42 and the supporting platform 15. The double-layer arrangement of the first sealing ring 41 and the second sealing ring 43 further improves the tightness of the connection between the male plug 3 and the locking ring 2.

[0043] On the basis of the above embodiments, there are two elastic buckles 22. The two elastic buckles 22 are arranged at intervals along the outer peripheral side of the locking ring 2. Having two elastic buckles 22 further strengthens the limit locking of the male plug 3.

[0044] Further, in order to improve the connection strength between the housing 1 and the locking ring 2, there can also be multiple elastic buckles 22.

[0045] In other embodiments, the elastic buckles 22 and the limiting portions 21 of the locking ring 2 are integrally injection-molded with the main body of the locking ring 2. Integral injection molding simplifies the manufacturing process, improves strength, and reduces costs.

[0046] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A non-detachable quick-connect connector, characterized in that: include: A housing (1) is provided with a socket in the middle, the socket being used to accommodate a male plug (3), and a limiting boss (11) and a supporting platform (15) are provided inside the housing (1); A locking ring (2) is coaxially arranged with the housing (1), the locking ring (2) is sleeved between the housing (1) and the male plug (3), the locking ring (2) is provided with a locking structure and a limiting portion (21) arranged along the outer circumference of the locking ring (2), and the limiting portion (21) is arranged below the locking structure; A positioning seal (4) is coaxially arranged with the housing (1), and the positioning seal (4) is arranged between the locking ring (2) and the housing (1).

2. A non-detachable quick-connect connector as claimed in claim 1, characterized in that: The inner wall of the housing (1) is provided with a guide groove (12), and the outer wall of the lock ring (2) is provided with a guide strip (23) matched with the guide groove (12).

3. A non-detachable quick-connect connector as claimed in claim 2, characterized in that: The locking structure is an inwardly protruding elastic buckle (22).

4. A non-detachable quick-connect connector as claimed in claim 3, characterized in that: The elastic buckle (22) comprises: A fixed end (221) is fixedly mounted on the locking ring (2); A free end (222), one end of which is connected to the fixed end (221), and the free end (222) is bent along the diameter direction of the lock ring (2) toward the axial direction of the lock ring (2); the free end (222) is used to press against the locking boss (32) on the outer peripheral side of the male plug (3) after the male plug (3) is inserted into the housing (1) to lock the male plug (3) in the housing (1).

5. A non-detachable quick-connect connector as claimed in claim 4, characterized in that: The side edge of the housing (1) is provided with a dismantling opening corresponding to the elastic buckle (22).

6. A non-detachable quick-connect connector as claimed in claim 5, characterized in that: The demolition opening is a U-shaped groove (14), and the portion of the shell (1) located between the U-shaped grooves (14) forms a demolition baffle (13).

7. The non-detachable quick-connect connector according to claim 1, characterized in that: The positioning seal (4) comprises: A positioning ring (42) is coaxially arranged with the locking ring (2), and the positioning ring (42) is arranged on the supporting platform (15); The first sealing ring (41) is arranged between the positioning ring (42) and the bottom of the locking ring (2).

8. A non-detachable quick-connect connector as claimed in claim 7, characterized in that: A second sealing ring (43) is also provided between the positioning ring (42) and the supporting platform (15).

9. A non-detachable quick-connect connector as claimed in claim 4, characterized in that: There are two elastic buckles (22), and the two elastic buckles (22) are arranged at intervals along the outer peripheral side of the locking ring (2).

10. A non-detachable quick-connect connector as claimed in claim 9, characterized in that: The elastic buckle (22) and the limiting portion (21) of the locking ring (2) are integrally injection-molded with the main body of the locking ring (2).

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