Quick plug connector assembly

Abstract

The utility model relates to the technical field of air-cooled oil cooler detection devices, in particular to a quick connector assembly which comprises an air inlet pipe joint, a pipe nozzle and a threaded joint. The pipe nozzle is welded on the end head of an oil pipe of the air-cooled oil cooler; the external thread section at the lower part of the threaded joint is screwed in the threaded hole of the pipe nozzle; an anti-falling clip is mounted on the air inlet pipe joint through a rotating shaft; when the lower end of the air inlet pipe connector is inserted into the center hole of the threaded connector, the anti-disengaging clamp is connected to the lower end face of the pipe nozzle in a clamped mode, and the anti-disengaging effect is achieved. When the air inlet pipe joint needs to be pulled out, the anti-falling clip is rotated around the rotating shaft, so that the anti-falling clip is separated from the lower end face of the pipe nozzle, and the air inlet pipe joint can be pulled out. Therefore, the quick plugging function of the air inlet pipe joint can be realized.

Description

Technical Field

[0001] This utility model relates to the technical field of testing devices for air-cooled oil coolers, and in particular to a quick-connect fitting assembly, specifically a quick-connect fitting assembly for high-pressure dry testing of air-cooled oil coolers. Background Technology

[0002] Air-cooled oil coolers use a fan to blow air across the radiator, causing the engine oil to exchange heat with the air on the radiator surface, thus cooling the oil temperature. This method is characterized by its simple structure and light weight, and is suitable for smaller engines with lower power output.

[0003] Air-cooled oil coolers require high-pressure dry testing, which involves introducing high-pressure gas into the oil pipes of the air-cooled oil cooler to test its airtightness. The test pressure is 1.38 MPa, which is considered a high-pressure operation.

[0004] During high-pressure dry testing, the intake pipe connector needs to be connected to the oil pipe of the air-cooled oil cooler. High-pressure gas enters the oil pipe after passing through the intake pipe connector for airtightness testing.

[0005] The most common way to connect pipes is by locking with nuts. For example, patent application CN108474508A discloses a pipe connection assembly, patent CN208919501U discloses a pipe connection assembly, and patent CN219453164U discloses a pipe connection assembly and an air conditioner.

[0006] If the above-mentioned existing connection method is used to connect the intake pipe connector to the oil pipe, the intake pipe connector cannot be quickly inserted and removed, which will affect the detection efficiency. Utility Model Content

[0007] The main objective of this invention is to provide a quick-connect connector assembly to solve the aforementioned technical problems.

[0008] To achieve the above objectives, this utility model proposes a quick-connect fitting assembly, including an air inlet pipe fitting, a nozzle, and a threaded fitting; the nozzle is welded to the end of the oil pipe of an air-cooled oil cooler; the lower external thread section of the threaded fitting is screwed into the threaded hole of the nozzle; an anti-disengagement clip is installed on the air inlet pipe fitting via a rotating shaft; when the lower end of the air inlet pipe fitting is inserted into the center hole of the threaded fitting, the anti-disengagement clip engages with the lower end face of the nozzle.

[0009] Preferably, a handle is welded to the upper end of the anti-detachment clip.

[0010] Preferably, the air intake pipe connector includes, from top to bottom, an air pipe connection section, a gripping section, an axial limiting section, and a plug-in section; the outer diameter of the axial limiting section is larger than the outer diameter of the plug-in section; the plug-in section is used to be inserted into the central hole of the threaded connector, and the lower end face of the axial limiting section forms an axial limiting surface to abut against the top surface of the threaded connector.

[0011] Preferably, an inner annular groove is provided on the inner wall of the threaded joint, and a first O-ring is provided in the inner annular groove; the first O-ring contacts and seals with the outer peripheral surface of the insertion section of the air intake pipe joint.

[0012] Preferably, the outer circumferential surface of the middle part of the threaded connector is set as an external hexagon, and an external annular groove is provided between the external thread section at the lower part of the threaded connector and the external hexagon, and a second O-ring is provided in the external annular groove; a tapered surface is provided at the opening of the central threaded hole of the nozzle, and the tapered surface contacts and seals with the second O-ring.

[0013] Preferably, a retaining ring is formed near the end of the oil pipe by means of folding, and the retaining ring abuts against the lower end face of the nozzle and is welded.

[0014] Preferably, the anti-detachment clip includes a connecting plate, an upper plate integrally formed on the upper end of the connecting plate, and a lower plate integrally formed on the lower end of the connecting plate; the connecting plate, the upper plate, and the lower plate together form a U-shaped component; the lower plate is used to lock onto the lower end face of the nozzle; a first U-shaped groove is provided on the upper plate, the axial limiting section of the air intake pipe connector is installed in the first U-shaped groove, and the two side plates of the first U-shaped groove are respectively connected to the axial limiting section through the rotating shaft.

[0015] Preferably, a second U-shaped groove is provided on the lower plate body, and when the lower plate body is stuck on the lower end face of the nozzle, the oil pipe is located in the second U-shaped groove.

[0016] Preferably, an annular protrusion is provided on the outer peripheral surface of the upper end of the tracheal connection section.

[0017] Preferably, the central inner hole of the threaded connector is a stepped hole, including an upper hole body and a lower hole body; the inner diameter of the upper hole body is larger than the inner diameter of the lower hole body, and the upper hole body and the lower hole body are connected by a reverse conical surface transition; a rounded corner is provided at the bottom edge of the insertion section; the outer diameter of the insertion section is adapted to the inner diameter of the lower hole body to form a sliding fit.

[0018] Due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows:

[0019] In this invention, when the lower end of the air intake pipe connector is inserted into the center hole of the threaded connector, an anti-disengagement clip is used to engage with the lower end face of the nozzle, preventing it from coming loose. When it is necessary to remove the air intake pipe connector, the anti-disengagement clip is rotated around the pivot, causing it to disengage from the lower end face of the nozzle, allowing the air intake pipe connector to be removed. Therefore, by employing this invention, a quick insertion and removal function for the air intake pipe connector can be achieved. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 The three-dimensional structure of the quick-connect connector assembly provided by this utility model Figure 1 And the intake pipe connector is about to be inserted into the threaded connector;

[0022] Figure 2 The three-dimensional structure of the quick-connect connector assembly provided by this utility model Figure 2 The intake pipe connector has been inserted into the threaded connector, and the anti-dislodgement clip is engaged with the lower end face of the nozzle;

[0023] Figure 3 This is a cross-sectional view of the quick-connect fitting assembly provided by this utility model. The air intake pipe fitting has been inserted into the threaded fitting, and the anti-dislodgement clip is engaged with the lower end face of the nozzle.

[0024] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0025] Figure 5 This is a three-dimensional structural diagram of the intake pipe connector in this utility model;

[0026] Figure 6 This is a three-dimensional structural diagram of the threaded connector in this utility model;

[0027] Figure 7 This is a cross-sectional view of the threaded connector in this utility model;

[0028] Figure 8 This is a cross-sectional view of the nozzle in this utility model;

[0029] Figure 9 This is a schematic diagram of the assembly formed by the anti-detachment clip and the handle in this utility model;

[0030] Figure 10This is a schematic diagram of the intake pipe connector about to be inserted into the threaded connector in this utility model.

[0031] Explanation of reference numerals: 1. Intake pipe connector; 1a. Air pipe connection section; 1b. Grip section; 1c. Axial limiting section; 1d. Insertion section; 1e. Annular protrusion; 1f. Rounded corner; 2. Nozzle; 2a. Conical surface; 3. Threaded connector; 3a. Inner annular groove; 3b. Outer hexagon; 3c. Outer annular groove; 3d. Upper bore; 3e. Lower bore; 3f. Inverted conical surface; 4. Oil pipe; 4a. Retaining ring; 5. Rotating shaft; 6. Anti-detachment clip; 6a. Connecting plate; 6b. Upper plate; 6c. Lower plate; 6d. First U-groove; 6e. Second U-groove; 7. Handle; 8. First O-ring seal; 9. Second O-ring seal. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0034] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0035] Combination Figures 1 to 9As shown, a quick-connect fitting assembly includes an intake pipe connector 1, a nozzle 2, and a threaded connector 3. The nozzle 2 is welded to the end of the oil pipe 4 of an air-cooled oil cooler. The lower external thread section of the threaded connector 3 is screwed into the threaded hole of the nozzle 2. An anti-disengagement clip 6 is installed on the intake pipe connector 1 via a rotating shaft 5. When the lower end of the intake pipe connector 1 is inserted into the center hole of the threaded connector 3, the anti-disengagement clip 6 engages with the lower end face of the nozzle 2. A handle 7 is welded to the upper end face of the anti-disengagement clip 6.

[0036] Combination Figure 5 As shown, the air intake pipe connector 1 includes, from top to bottom, an air pipe connecting section 1a, a gripping section 1b, an axial limiting section 1c, and a insertion section 1d; the outer diameter of the axial limiting section 1c is larger than the outer diameter of the insertion section 1d; the insertion section 1d is used to be inserted into the center hole of the threaded connector 3, and the lower end face of the axial limiting section 1c forms an axial limiting surface to abut against the top surface of the threaded connector 3. By setting the axial limiting section 1c, the insertion depth of the air intake pipe connector 1 into the threaded connector 3 can be limited.

[0037] Combination Figure 3 and Figure 7 As shown, an inner annular groove 3a is provided on the inner wall of the threaded joint 3, and a first O-ring seal 8 is provided in the inner annular groove 3a; the first O-ring seal 8 contacts and seals the outer circumferential surface of the insertion section 1d of the air intake pipe joint 1. The first O-ring seal 8 serves to seal the threaded joint 3 and the insertion section 1d.

[0038] Combination Figure 3 , Figures 6 to 8 As shown, the outer circumferential surface of the threaded connector 3 is configured as an external hexagon 3b. An external annular groove 3c is provided between the external thread section at the lower part of the threaded connector 3 and the external hexagon 3b, and a second O-ring seal 9 is provided in the external annular groove 3c. A tapered surface 2a is provided at the opening of the central threaded hole of the nozzle 2, and the tapered surface 2a contacts and seals with the second O-ring seal 9. The second O-ring seal 9 serves to seal the threaded connector 3 and the nozzle 2.

[0039] Combination Figure 4 As shown, a retaining ring 4a is formed near the end of the oil pipe 4 by pleating, and the retaining ring 4a abuts against the lower end face of the nozzle 2 and is welded thereon. The retaining ring 4a serves to limit axial movement and facilitates welding with the nozzle 2.

[0040] Combination Figure 1 and Figure 9As shown, the anti-detachment clip 6 includes a connecting plate 6a, an upper plate body 6a integrally formed on the upper end of the connecting plate 6a, and a lower plate body 6c integrally formed on the lower end of the connecting plate 6a; the connecting plate 6a, the upper plate body 6a, and the lower plate body 6c together form a U-shaped component; the lower plate body 6c is used to clamp onto the lower end face of the nozzle 2; a first U-shaped groove 6d is provided on the upper plate body 6a, the axial limiting section 1c of the air intake pipe connector 1 is installed in the first U-shaped groove 6d, and the two side plates of the first U-shaped groove 6d are respectively connected to the axial limiting section 1c through the rotating shaft 5. Further, a second U-shaped groove 6e is provided on the lower plate body 6c, and when the lower plate body 6c is clamped onto the lower end face of the nozzle 2, the oil pipe 4 is located in the second U-shaped groove 6e.

[0041] Combination Figure 5 As shown, an annular protrusion 1e is provided on the outer circumferential surface of the upper end of the tracheal connection section 1a. In use, the tracheal connection section 1a is inserted into the air supply pipe of the compressor and then secured with wire or cable ties. The annular protrusion 1e serves as an axial limit to prevent the tracheal connection section 1a from falling out of the air supply pipe.

[0042] Combination Figure 5 , Figure 7 As shown, the central inner hole of the threaded connector 3 is a stepped hole, including an upper hole body 3d and a lower hole body 3e; the inner diameter of the upper hole body 3d is larger than the inner diameter of the lower hole body 3e, and the upper hole body 3d and the lower hole body 3e are connected by a tapered surface 3e; a rounded corner 1f is provided at the bottom edge of the insertion section 1d; the outer diameter of the insertion section 1d is adapted to the inner diameter of the lower hole body 3e to form a sliding fit. When the air intake pipe connector 1 is inserted into the threaded connector 3, the rounded corner 1f and the tapered surface 3e together act as a guide, facilitating the smooth insertion of the insertion section 1d into the lower hole body 3e.

[0043] The quick-connect connector assembly provided by this utility model operates on the following principle:

[0044] Combination Figure 10 As shown, when it is necessary to insert the intake pipe connector 1 into the threaded connector 3, the handle 7 and the grip section 1b of the intake pipe connector 1 can be held simultaneously, so that the handle 7 fits against the grip section 1b, and the direction of force is as follows. Figure 10 As indicated by arrow F, insert the intake pipe connector 1 vertically downwards into the inner hole of the threaded connector 3, and then release the handle 7. Then combine... Figure 3 As shown, when the handle 7 is pushed to move away from the grip section 1b, the anti-detachment clip 6 rotates clockwise around the pivot 5, so that the lower plate 6c of the anti-detachment clip 6 engages with the lower end face of the nozzle 2, thereby playing an anti-detachment role.

[0045] Similarly, when it is necessary to pull the intake pipe connector 1 out of the threaded connector 3, the handle 7 and the grip section 1b of the intake pipe connector 1 can be held simultaneously, so that the handle 7 fits against the grip section 1b, and the direction of force is as follows: Figure 10 As shown by arrow F, the anti-detachment clip 6 rotates counterclockwise around the pivot 5, causing the lower plate 6c of the anti-detachment clip 6 to disengage from the lower end face of the nozzle 2, allowing the air intake connector 1 to be pulled out.

[0046] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. A quick-connect connector assembly, characterized in that, It includes an intake pipe connector (1), a nozzle (2) and a threaded connector (3); the nozzle (2) is welded to the end of the oil pipe (4) of the air-cooled oil cooler; The external thread section at the lower part of the threaded connector (3) is screwed into the threaded hole of the nozzle (2); An anti-detachment clip (6) is installed on the air intake pipe connector (1) via a rotating shaft (5); When the lower end of the air intake pipe connector (1) is inserted into the center hole of the threaded connector (3), the anti-disengagement clip (6) is engaged with the lower end face of the nozzle (2).

2. The quick-connect connector assembly as described in claim 1, characterized in that, A handle (7) is welded to the upper end of the anti-detachment clip (6).

3. A quick-connect connector assembly as described in claim 1, characterized in that, The air intake pipe connector (1) includes, from top to bottom, an air pipe connection section (1a), a gripping section (1b), an axial limiting section (1c), and a plug-in section (1d); the outer diameter of the axial limiting section (1c) is larger than the outer diameter of the plug-in section (1d); the plug-in section (1d) is used to be inserted into the center hole of the threaded connector (3), and the lower end face of the axial limiting section (1c) forms an axial limiting surface to abut against the top surface of the threaded connector (3).

4. A quick-connect connector assembly as described in claim 3, characterized in that, An inner annular groove (3a) is provided on the inner wall of the threaded joint (3), and a first O-ring seal (8) is provided in the inner annular groove (3a); the first O-ring seal (8) is in contact with and sealed to the outer circumferential surface of the insertion section (1d) of the air inlet pipe joint (1).

5. A quick-connect connector assembly as described in claim 1, characterized in that, The outer circumferential surface of the middle part of the threaded joint (3) is set as an external hexagon (3b), and an external annular groove (3c) is provided between the external thread section at the lower part of the threaded joint (3) and the external hexagon (3b), and a second O-ring seal (9) is provided in the external annular groove (3c); A tapered surface (2a) is provided at the opening of the threaded hole in the center of the nozzle (2), and the tapered surface (2a) contacts and seals with the second O-ring (9).

6. A quick-connect connector assembly as described in claim 1, characterized in that, The oil pipe (4) forms a retaining ring (4a) near the end by folding, and the retaining ring (4a) abuts against the lower end face of the nozzle (2) and is welded.

7. A quick-connect connector assembly as described in claim 3, characterized in that, The anti-detachment clip (6) includes a connecting plate (6a), an upper plate (6b) integrally formed on the upper end of the connecting plate (6a), and a lower plate (6c) integrally formed on the lower end of the connecting plate (6a); the connecting plate (6a), the upper plate (6b), and the lower plate (6c) together form a U-shaped component; the lower plate (6c) is used to be clamped on the lower end face of the nozzle (2); A first U-shaped groove (6d) is provided on the upper plate (6b), and the axial limiting section (1c) of the air intake pipe connector (1) is installed in the first U-shaped groove (6d). The two side plates of the first U-shaped groove (6d) are respectively connected to the axial limiting section (1c) through the rotating shaft (5).

8. A quick-connect connector assembly as described in claim 7, characterized in that, A second U-shaped groove (6e) is provided on the lower plate (6c). When the lower plate (6c) is stuck on the lower end face of the nozzle (2), the oil pipe (4) is located in the second U-shaped groove (6e).

9. A quick-connect connector assembly as described in claim 3, characterized in that, An annular protrusion (1e) is provided on the outer peripheral surface of the upper end of the tracheal connection section (1a).

10. A quick-connect connector assembly as described in claim 3, characterized in that, The central inner hole of the threaded connector (3) is a stepped hole, including an upper hole body (3d) and a lower hole body (3e); the inner diameter of the upper hole body (3d) is larger than the inner diameter of the lower hole body (3e), and the upper hole body (3d) and the lower hole body (3e) are connected by a transitional conical surface (3f); A rounded corner (1f) is provided at the bottom edge of the insertion section (1d); the outer diameter of the insertion section (1d) is adapted to the inner diameter of the lower hole (3e) to form a sliding fit.

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