Self-checking connector

Abstract

The application discloses a connector capable of self-checking installation, which comprises a shell and at least one cavity arranged in the shell, wherein a compression spring is arranged in each cavity, a check support ring is sleeved on one end of the compression spring, a lock is movably arranged in the shell and adheres to the outer side of the check support ring, a screw nut is screwed on the shell and corresponds to the position of the lock, and the inner side of the screw nut adheres to the outer side of the lock. The screw nut drives the lock to clamp the pipe, and when the screw nut is loosened, the check support ring is driven by the compression spring to push out the lock. The pipe can be quickly assembled and disassembled, and the clamping state of the pipe can be checked from the riveting position of the screw nut, so that the loosening and leakage are avoided. The structure is simple and compact, and the operation is convenient.

Description

Technical Field

[0001] This invention relates to the field of pipeline connection technology, and in particular to a connector that can self-test its installation position. Background Technology

[0002] Currently, automotive piping systems typically use a combination of male connectors and quick-connect female connectors to connect two independent pipes. This increases the number of parts, raising costs and reducing production efficiency. While connection devices exist that can directly connect two pipes, it cannot confirm whether the pipes are installed correctly, posing a risk of leakage due to improper installation. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a connector that is easy to assemble and disassemble quickly, and also easy to check the installation status and can self-check that it is installed in place.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: providing a connector that can self-test and be installed in place, including a housing and at least one cavity provided in the housing, a compression spring provided in each cavity, a verification support ring sleeved on one end of the compression spring, a locking device that is movably disposed in the housing and fits against the outer side of the verification support ring, and a tightening nut screwed on the housing at the position corresponding to the locking device, the inner side of the tightening nut fitting against the outer side of the locking device.

[0005] The above structure incorporates a locking device that engages with the tightening nut. This locking device also engages with the calibration support ring. When the tightening nut is tightened, it moves the locking device and presses against the pipe fitting. During removal, the tightening nut is loosened, and the calibration support ring is pushed out by the elastic force of the compression spring. As the tightening nut gradually separates from the locking device, the calibration support ring pushes out the locking device, disengaging it from the pipe fitting, allowing for easy removal. The operation is convenient, allowing observation of the tightening nut's position and facilitating judgment of the pipe fitting's clamping position. It effectively prevents loosening and leakage caused by improper installation. The structure is simple, compact, and easy to operate.

[0006] To simplify the structure and facilitate installation, preferably, a first cavity and a second cavity are provided in the housing. Each cavity has two symmetrical relief holes at the screw position corresponding to the tightening nut. Both relief holes are connected to the cavity at the corresponding end. A locking device is provided in each relief hole. The upper end face of the locking device is in contact with the upper wall of the relief hole, and the lower end face of the locking device is in contact with the lower wall of the relief hole.

[0007] To simplify the structure and facilitate installation, preferably, a first protrusion and a second protrusion are provided sequentially from top to bottom on the inner sidewall of the lock. A first transition slope is provided between the lower end face of the lock and the lower end face of the second protrusion, and the first transition slope is in contact with the upper end of the verification support ring.

[0008] To reduce movement obstruction, preferably, a chamfered bevel is provided along the circumferential direction on the edge of the upper end face of the verification support ring, and the chamfered bevel is in contact with the first transition bevel.

[0009] To reduce connection resistance, preferably, a first clearance slope is provided on the first protrusion and a second clearance slope is provided on the second protrusion, wherein the first clearance slope and the second clearance slope are in the same direction and are arranged in parallel.

[0010] For ease of installation, preferably, a stop bevel is provided on the outer wall of the locking device, a first stepped hole is provided at one end of the tightening nut, and a tapered hole with a wider outer diameter and a narrower inner diameter is provided at the other end. The larger end of the first stepped hole is provided with a threaded section that is screwed onto the housing, and the stop bevel fits against the wall of the tapered hole.

[0011] To facilitate the insertion of the fittings, preferably, a guide ring is fitted in each cavity, and a boss is provided around the outer wall of the guide ring. The boss and the outer wall of the guide ring form a stepped surface, which abuts and limits the end face of the cavity opening of the corresponding cavity.

[0012] To prevent leakage, preferably, a second stepped hole with a larger outer diameter and a smaller inner diameter is provided in the guide ring, and a first sealing ring is provided at the larger end of the second stepped hole. The outer wall of the first sealing ring is flush with the end face of the larger hole of the second stepped hole and abuts against the stepped surface of the first stepped hole.

[0013] To better prevent leakage in the connected state, preferably, a horizontally extending placement platform is provided around the outer side wall of the housing in the circumferential direction, and a second sealing ring is fitted on the outer side of the housing. The lower end face of the second sealing ring abuts against the upper end face of the placement platform, and the upper end face of the second sealing ring abuts against the lower end face of the lock. When the nut is screwed on and tightened, the outer side wall of the second sealing ring abuts against the wall of the tapered hole, and the lower end face of the tightened nut abuts against the upper end face of the placement platform.

[0014] To facilitate the installation of the spring, preferably, a connecting ring is coaxially connected to the verification support ring, and a compression spring is sleeved on the outside of the connecting ring. One end of the compression spring abuts against the lower end face of the verification support ring, and the other end abuts against the bottom of the corresponding end cavity.

[0015] Beneficial effects: The present invention is designed so that tightening the nut drives the locking device to clamp the pipe fitting, and when the tightening nut is loosened, the compression spring drives the verification support ring to push out the locking device. While quickly installing and removing the pipe fitting, it is also convenient to check the clamping status of the pipe fitting from the riveting position of the tightening nut to avoid loosening and leakage. The structure is simple and compact and easy to operate. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is an exploded view of the structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the installation state of the present invention.

[0019] Figure 3 This is a schematic diagram of the clamped position of the present invention.

[0020] Figure 4 This is a schematic diagram of the structure for tightening a nut.

[0021] Figure 5 This is a schematic diagram of the locking device.

[0022] Figure 6 This is a schematic diagram of the support ring structure for verification.

[0023] Figure 7 This is an assembly perspective view of the present invention.

[0024] The meanings of the labels in the attached diagram are as follows:

[0025] Housing-1; First cavity-11; Second cavity-12; Clearance hole-13; Placement platform-14;

[0026] Tighten nut-2; First sealing ring-3; Check support ring-4; Chamfered bevel-41; Connecting ring-42;

[0027] Guide ring-5; Boss-51;

[0028] Locking device-6; First protrusion-61; First clearance slope-611; Second clearance slope-612; Second protrusion-62; First transition slope-63; Stop slope-64; Threaded section-65; Tapered hole-66;

[0029] Second sealing ring - 7; Compression spring - 8. Detailed Implementation

[0030] Depend on Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the present invention includes a housing 1 and at least one cavity provided inside the housing 1. A compression spring 8 is provided in each cavity. A verification support ring 4 is sleeved on one end of the compression spring 8. A locking device 6 is movably provided inside the housing 1 and fits against the outer side of the verification support ring 4. A tightening nut 2 is screwed onto the housing 1 at the position corresponding to the locking device 6. The inner side of the tightening nut 2 fits against the outer side of the locking device 6.

[0031] Specifically, the housing 1 has a first cavity 11 and a second cavity 12 that are connected to each other. Each cavity has two symmetrical relief holes 13 at the screw position of the tightening nut 2. The two relief holes 13 are connected to the cavity at the corresponding end. Each relief hole 13 has a locking device 6. The upper end face of the locking device 6 is in contact with the upper wall of the relief hole 13, and the lower end face of the locking device 6 is in contact with the lower wall of the relief hole 13. The inner side wall of the locking device 6 has a first protrusion 61 and a second protrusion 62 arranged from top to bottom. The lower end face of the locking device 6 and the lower end face of the second protrusion 62 are connected by a first transition slope 63. The edge of the upper end face of the calibration support ring 4 is surrounded by a chamfered slope 41 in the circumferential direction. The chamfered slope 41 is in contact with the first transition slope 63.

[0032] A first clearance slope 611 is provided on the first protrusion 61, and a second clearance slope 612 is provided on the second protrusion 62. The first clearance slope 611 and the second clearance slope 612 are in the same direction and are arranged in parallel.

[0033] A stop bevel 64 is provided on the outer wall of the locking device 6. A first stepped hole is provided at one end of the tightening nut 2, and a tapered hole 66 with a wider outer diameter and a narrower inner diameter is provided at the other end. A threaded section 65 for screwing into the housing 1 is provided on the larger end wall of the first stepped hole. The stop bevel 64 fits against the hole wall of the tapered hole 66. A guide ring 5 is fitted in each cavity. A boss 51 is provided around the outer wall of the guide ring 5. The boss 51 and the outer wall of the guide ring 5 form a stepped surface. The stepped surface abuts and limits the cavity opening end face of the corresponding cavity.

[0034] The guide ring 5 has a second stepped hole that is larger on the outside and smaller on the inside. A first sealing ring 3 is provided at the larger end of the second stepped hole. The outer side wall of the first sealing ring 3 is flush with the end face of the larger hole of the second stepped hole and abuts against the stepped surface of the first stepped hole.

[0035] A horizontally extending placement platform 14 is provided around the outer side wall of the housing 1 in the circumferential direction. A second sealing ring 7 is fitted on the outer side of the housing 1. The lower end face of the second sealing ring 7 abuts against the upper end face of the placement platform 14, and the upper end face of the second sealing ring 7 abuts against the lower end face of the locking device 6. When the nut 2 is screwed and tightened, the outer side wall of the second sealing ring 7 abuts against the wall of the tapered hole 66, and the lower end face of the tightened nut 2 abuts against the upper end face of the placement platform 14.

[0036] A connecting ring 42 is coaxially connected to the verification support ring 4. A compression spring 8 is sleeved on the outside of the connecting ring 42. One end of the compression spring 8 abuts against the lower end face of the verification support ring 4, and the other end abuts against the bottom of the corresponding end cavity.

[0037] The working principle of this invention is as follows:

[0038] like Figures 1 to 7 As shown, since the installation structures of the first cavity 11 and the second cavity 12 are the same, the installation structure of the first cavity 11 is used as an example for explanation. First, insert the pipe (not shown) into the first stepped hole of the tightening nut 2 and pass through the tapered hole 66. Then, put the guide ring 5 at the cavity opening of the first cavity 11. Then, the threaded section 65 screws the tightening nut 2 to the housing 1. At this time, continue to pass the pipe through the first sealing ring 3, the guide ring 5, the first stepped hole and the locking device 6 in sequence and extend into the verification support ring 4. The extended end of the pipe abuts against the bottom of the middle hole of the verification support ring 4, and in turn, drives the verification support ring 4 to squeeze the compression spring 8 inward, and causes the verification support ring 4 to disengage from the locking device 6.

[0039] Next, tighten the nut 2. During this process, the wall of the tapered hole 66 in the nut 2 simultaneously presses against the stop slope 64 of the two locking devices 6, pushing the two locking devices 6 to move horizontally inward along the corresponding end clearance holes 13, and causing the first protrusion 61 and the second protrusion 62 on each locking device 6 to simultaneously clamp the corresponding end of the pipe fitting. In this embodiment, the first protrusion 61 and the second protrusion 62 are protrusion structures protruding from the locking device 6 (e.g., Figure 1 and Figure 5 As shown), when the screw nut 2 is tightened, the outer wall of the first sealing ring 3 abuts against the stepped surface of the first stepped hole, the lower end face of the tightened nut 2 abuts against the upper end face of the placement platform 14, and the outer wall of the second sealing ring 7 abuts against the hole wall of the tapered hole 66. At this time, the pipe fitting is clamped in place.

[0040] When disassembly is required, first loosen the tightened nut 2. The tapered hole 66 gradually moves outward and disengages from the contact state with the stop slope 64. The first protrusion 61 and the second protrusion 62 loosen their grip on the pipe. Under the elastic force of the compression spring 8, the verification support ring 4 is pushed outward. The verification support ring 4 pushes the locking device 6 to move outward along the relief hole 13. When the hole wall of the tapered hole 66 disengages from the stop slope 64, the first protrusion 61 and the second protrusion 62 also completely disengage from the pipe, and the pipe can be removed without obstruction.

[0041] The first clearance slope 611 and the second clearance slope 612 are provided to allow for clearance in the insertion direction of the pipe fitting, so as to prevent the pipe fitting from being inserted incompletely, which would affect the clamping connection and the efficiency of fluid transport within the pipe fitting.

[0042] If the lower end face of the tightened nut 2 does not abut against the upper end face of the placement platform 14, it indicates that the first protrusion 61 and the second protrusion 62 have not sufficiently clamped the pipe fitting, and there is a risk of the pipe fitting loosening and leaking. The tightened nut 2 should be removed, and it should be checked whether there are any foreign objects obstructing it or whether the first sealing ring 3 is protruding from the guide ring 5. After the inspection is completed, the rivet should be tightened again and the rivet position should be checked. This operation should be repeated until the lower end face of the tightened nut 2 abuts against the upper end face of the placement platform 14.

[0043] Similarly, the pipe fittings are installed in the second cavity 12 according to the aforementioned procedures. Finally, the two installed pipe fittings are connected at the junction of the two cavities (e.g., Figure 3 (The state shown).

[0044] It should be noted that the contact positions between the upper and lower end faces of the locking device 6 and the wall of the relief hole 13 are connected to the contact positions between the wall of the tapered hole 66 and the stop inclined surface 64. Therefore, only when the wall of the tapered hole 66 in the tightened nut 2 completely abuts and covers the second sealing ring 7 and abuts against the upper end face of the placement platform 14 can a closed space be formed to prevent external leakage. Therefore, tightening the screw nut 2 into place can both check the clamping status and achieve the purpose of sealing and preventing leakage.

Claims

1. A connector capable of self-checking its installation position, characterized in that: The enclosure includes a housing (1) and at least one cavity within the housing (1). A compression spring (8) is provided within each cavity. A verification support ring (4) is fitted onto one end of each compression spring (8). A locking device (6) is movably disposed within the housing (1) and fits against the outer side of the verification support ring (4). A tightening nut (2) is screwed onto the housing (1) at a position corresponding to the locking device (6), with the inner side of the tightening nut (2) fitting against the outer side of the locking device (6). A first cavity (11) and a second cavity (12) are connected within the housing (1). Each cavity has two symmetrical clearance holes (13) at the screwing position corresponding to the tightening nut (2). Each of the aforementioned clearance holes (13) is connected to the cavity at the corresponding end; each of the aforementioned clearance holes (13) is provided with a locking device (6), the upper end face of the locking device (6) is in contact with the upper hole wall of the clearance hole (13), and the lower end face of the locking device (6) is in contact with the lower hole wall of the clearance hole (13); a stop slope (64) is provided on the outer side wall of the locking device (6), a first stepped hole is provided at one end of the tightening nut (2), and a tapered hole (66) with a wider outer side and a narrower inner side is connected at the other end, and a threaded section (65) for screwing into the housing (1) is provided on the large hole end wall of the first stepped hole, and the stop slope (64) is in contact with the hole wall of the tapered hole (66); A horizontally extending placement platform (14) is provided around the outer side wall of the housing (1) in the circumferential direction. A second sealing ring (7) is fitted on the outer side of the housing (1). The lower end face of the second sealing ring (7) abuts against the upper end face of the placement platform (14). The upper end face of the second sealing ring (7) abuts against the lower end face of the locking device (6). When the nut (2) is screwed on and tightened, the outer side wall of the second sealing ring (7) abuts against the wall of the tapered hole (66), and the lower end face of the tightened nut (2) abuts against the upper end face of the placement platform (14).

2. The connector capable of self-testing its installation position as described in claim 1, characterized in that: On the inner sidewall of the locking device (6), a first protrusion (61) and a second protrusion (62) are provided from top to bottom. A first transition slope (63) is provided between the lower end face of the locking device (6) and the lower end face of the second protrusion (62). The first transition slope (63) is in contact with the upper end of the verification support ring (4).

3. The connector capable of self-testing and proper installation as described in claim 2, characterized in that: A chamfered bevel (41) is provided along the circumferential direction on the edge of the upper end face of the verification support ring (4), and the chamfered bevel (41) is in contact with the first transition bevel (63).

4. The connector capable of self-testing its installation position as described in claim 2, characterized in that: A first clearance slope (611) is provided on the first protrusion (61), and a second clearance slope (612) is provided on the second protrusion (62). The first clearance slope (611) and the second clearance slope (612) are arranged in the same direction and parallel to each other.

5. The connector capable of self-testing its installation position as described in claim 2, characterized in that: A guide ring (5) is fitted in each cavity. A boss (51) is provided around the outer wall of the guide ring (5). The boss (51) and the outer wall of the guide ring (5) form a stepped surface. The stepped surface abuts and limits the cavity opening end face of the corresponding cavity.

6. The connector capable of self-testing its installation position as described in claim 5, characterized in that: The guide ring (5) is provided with a second stepped hole that is larger on the outside and smaller on the inside. A first sealing ring (3) is provided at the larger end of the second stepped hole. The outer side wall of the first sealing ring (3) is flush with the end face of the larger hole of the second stepped hole and abuts against the stepped surface of the first stepped hole.

7. The connector capable of self-testing installation as described in claim 1, characterized in that: A connecting ring (42) is coaxially connected to the verification support ring (4), and a compression spring (8) is sleeved on the outside of the connecting ring (42). One end of the compression spring (8) abuts against the lower end face of the verification support ring (4), and the other end abuts against the bottom of the corresponding end cavity.

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