A type of automotive nylon tubing embedded quick-connect fitting

Abstract

This utility model discloses an automotive nylon tube embedded quick-connect coupling, relating to the field of automotive parts technology. It includes a quick-connect assembly press-fitted into a valve body mounting hole. The quick-connect assembly includes a clamping sleeve, a support base, and a retaining ring arranged sequentially from top to bottom. A vertical through hole is provided in the middle of the support base, and a retaining ring is disposed within the vertical through hole. The lower end of the clamping sleeve is fixedly inserted into the vertical through hole and presses against the edge of the retaining ring. A tube puller is slidably disposed within the clamping sleeve. When the tube puller slides downward, its lower end can extend into the vertical through hole and press against the middle of the retaining ring. The retaining ring is slidably sleeved on the lower end of the support base, and a sealing ring is fitted within the retaining ring. When the support base slides downward, the lower end of the support base can push the sealing ring out of the retaining ring.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to a nylon tube embedded quick-connect connector for automobiles. Background Technology

[0002] The current method of installing nylon tube quick-connect couplings on valve bodies involves machining threaded holes in the valve body, and then screwing the quick-connect coupling's threads into those holes. This method has the following drawbacks:

[0003] 1. The quick-connect fitting takes up space beyond the valve body and may interfere with other components.

[0004] 2. Workers need to load the truck and install the quick-connect fittings on-site. This takes time. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide an automotive nylon tube embedded quick-connect fitting that is installed inside the valve body, resulting in an aesthetically pleasing appearance and space-saving design; it also eliminates the need for on-site installation by workers, saving time.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a quick-connect fitting for automotive nylon tubing, comprising a quick-connect assembly press-fitted into a valve body mounting hole, the quick-connect assembly comprising a clamping sleeve, a support base, and a retaining ring arranged sequentially from top to bottom; a vertical through hole is provided in the middle of the support base, and a retaining ring is provided in the vertical through hole; the lower end of the clamping sleeve is fixedly inserted into the vertical through hole and presses against the edge of the retaining ring; a tube puller sleeve is slidably disposed in the clamping sleeve, and when the tube puller sleeve slides downward, the lower end of the tube puller sleeve can extend into the vertical through hole and press against the middle of the retaining ring; the retaining ring is slidably sleeved on the lower end of the support base, and a sealing ring is clamped in the retaining ring, and when the support base slides downward, the lower end of the support base can push the sealing ring out of the retaining ring.

[0007] A further improvement is that: a sealing groove adapted to the sealing ring is provided in the mounting hole, and a first limiting step adapted to the fixing ring is provided on the inner side wall of the mounting hole at the position on the sealing groove; when the quick-connect assembly is pressed down as a whole, the first limiting step positions the fixing ring, and the support seat continues to slide down to push the sealing ring out of the fixing ring and press it into the sealing groove.

[0008] A further improvement is that a first stop is provided at the upper opening of the mounting hole, and a first anti-disengagement tooth is provided on the outer side wall of the clamping sleeve to match the first stop.

[0009] A further improvement is that: a second stop is provided at the upper opening of the vertical through hole of the support base, and an insertion part for inserting into the vertical through hole of the support base is provided at the lower end of the clamping sleeve, and a second limiting protrusion adapted to the second stop is provided on the outer side wall of the insertion part.

[0010] A further improvement is that the vertical through hole of the support base is provided with an inclined guide surface that is compatible with the retaining ring.

[0011] A further improvement is that a limiting groove is provided at the upper end of the outer side wall of the support base.

[0012] A further improvement is that a second limiting step is provided in the central hole of the clamping sleeve, and a second anti-dislodgement tooth is provided at the lower end of the tube puller sleeve to match the second limiting step.

[0013] A further improvement is that the upper end of the tube puller is provided with a limiting flange that is compatible with the clamping sleeve.

[0014] A further improvement is that a third stop is provided at the upper opening of the central hole of the fixing ring, and a first limiting protrusion adapted to the second stop is provided at the lower end of the support base.

[0015] A further improvement is that the inner wall of the retaining ring is provided with several downwardly inclined spring pieces.

[0016] The beneficial effects of this utility model are as follows:

[0017] This invention can be embedded inside parts such as valve bodies, reducing on-site installation work. The novel assembly structure features a retaining ring that wraps around the sealing ring as a single unit. During press-fitting, the retaining ring is pushed up by the step of the mounting hole, allowing the sealing ring to fall into the sealing groove. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view of the automotive nylon tube embedded quick-connect connector in this embodiment of the present utility model;

[0019] Figure 2 This is a cross-sectional view of the valve body in an embodiment of this utility model;

[0020] Figure 3 This is an exploded view of the quick-connect assembly in an embodiment of this utility model;

[0021] Figure 4 This is a cross-sectional view of the quick-connect assembly in an embodiment of this utility model;

[0022] Figure 5 This is a perspective view of the support base in an embodiment of this utility model;

[0023] Figure 6 This is a cross-sectional view of the support base in an embodiment of this utility model;

[0024] Figure 7 This is a perspective view of the clamping sleeve in an embodiment of this utility model;

[0025] Figure 8 This is a cross-sectional view of the clamping sleeve in an embodiment of this utility model;

[0026] Figure 9 This is a perspective view of the tube sleeve being removed in an embodiment of this utility model;

[0027] Figure 10 This is a cross-sectional view of the tube sleeve being pulled out in an embodiment of this utility model;

[0028] Figure 11 This is a perspective view of the retaining ring in an embodiment of this utility model;

[0029] Figure 12 This is a perspective view of the fixing ring in an embodiment of the present utility model;

[0030] Figure 13 This is a cross-sectional view of the fixing ring in an embodiment of this utility model.

[0031] Figure label:

[0032] 1-Valve body; 11-Mounting hole; 12-Sealing groove; 13-First limiting step; 14-First stop edge;

[0033] 2-Support base; 21-Vertical through hole; 22-Second stop edge; 23-Limiting groove; 24-First limiting protrusion; 25-Inclined guide surface;

[0034] 3-Compression sleeve; 31-Insert part; 32-Second limiting protrusion; 33-Second limiting step; 34-First anti-disengagement tooth;

[0035] 4-Removal sleeve; 41-Second anti-dislodgement tooth; 42-Limiting flange;

[0036] 5-Snap ring; 51-Scrap metal clip;

[0037] 6-Fixing ring; 61-Third retaining edge;

[0038] 7-Sealing ring. Detailed Implementation

[0039] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0040] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.

[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection; they can refer to a direct connection or a connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] In this utility model, unless otherwise specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "below," and "over" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Above," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] The following description, in conjunction with the accompanying drawings, further illustrates specific embodiments of the present invention, making the technical solution and beneficial effects of the present invention clearer and more explicit. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0045] See Figures 1-4As shown, this utility model embodiment provides an automotive nylon tube embedded quick connector, including a quick connector assembly press-fitted into the mounting hole 11 of the valve body 1. The quick connector assembly includes a pressing sleeve 3, a support seat 2 and a fixing ring 6 arranged sequentially from top to bottom.

[0046] See Figures 5-6 As shown, a vertical through hole 21 is provided in the middle of the support base 2, and a retaining ring 5 is provided inside the vertical through hole 21. Specifically, a sealing groove 12 adapted to the sealing ring 7 is provided in the mounting hole 11, and a first limiting step 13 adapted to the fixing ring 6 is provided on the inner side wall of the mounting hole 11 at the position on the sealing groove 12. When the quick-connect assembly is pressed down as a whole, the first limiting step 13 positions the fixing ring 6, and the support base 2 continues to slide down, pushing the sealing ring 7 out of the fixing ring 6 and pressing it into the sealing groove 12. A second stop 22 is provided at the upper opening of the vertical through hole 21 of the support base 2, and an insertion part 31 for inserting into the vertical through hole 21 of the support base 2 is provided at the lower end of the clamping sleeve 3, and a second limiting protrusion 32 adapted to the second stop 22 is provided on the outer side wall of the insertion part 31. An inclined guide surface 25 adapted to the retaining ring 5 is provided in the middle of the vertical through hole 21 of the support base 2. A limiting groove 23 is provided on the upper end of the outer side wall of the support 2.

[0047] See Figures 7-10 As shown, the lower end of the clamping sleeve 3 is fixedly inserted into the vertical through hole 21 and presses against the edge of the retaining ring 5; a pull-out sleeve 4 is slidably disposed inside the clamping sleeve 3. When the pull-out sleeve 4 slides downward, the lower end of the pull-out sleeve 4 can extend into the vertical through hole 21 and press against the middle of the retaining ring 5; specifically, a first stop 14 is provided at the upper opening of the mounting hole 11, and a first anti-disengagement tooth 34 adapted to the first stop 14 is provided on the outer side wall of the clamping sleeve 3. A second limiting step 33 is provided in the center hole of the clamping sleeve 3, and a second anti-disengagement tooth 41 adapted to the second limiting step 33 is provided at the lower end of the pull-out sleeve 4. A limiting flange 42 adapted to the clamping sleeve 3 is provided at the upper end of the pull-out sleeve 4.

[0048] See Figures 12-13 As shown, the fixing ring 6 is slidably sleeved on the lower end of the support base 2, and a sealing ring 7 is fitted inside the fixing ring 6. When the support base 2 slides downward, the lower end of the support base 2 can push the sealing ring 7 out of the fixing ring 6. Specifically, a third stop 61 is provided at the upper opening of the central hole of the fixing ring 6, and a first limiting protrusion 24 adapted to the second stop 22 is provided at the lower end of the support base 2.

[0049] See Figure 11 As shown, the inner wall of the retaining ring 5 is provided with several downwardly inclined spring pieces 51.

[0050] The installation method of this utility model:

[0051] We manufacture the internal components of the quick-connect fitting into a small assembly and send it to the customer. The customer then processes a mounting hole on their own valve body and presses the quick-connect assembly into the valve body.

[0052] The assembly principle of this utility model:

[0053] The embedded quick-connect assembly is designed such that the pull sleeve is fixed by the clamping sleeve, and the clamping sleeve and support seat enclose the retaining ring. The retaining ring is installed on the support seat, and its function is to wrap around the sealing ring to prevent it from falling off. When the entire assembly is pressed into the mounting hole, the retaining ring is held in place by the step in the mounting hole during the pressing process, and the sealing ring continues to move down, detaching from the retaining ring, and is finally pressed into the sealing groove.

[0054] When using, simply insert the nylon tube. When removing the tube, press the tube removal sleeve, which will push open the retaining ring, allowing you to remove the tube.

[0055] In the description of this specification, references to terms such as "an embodiment," "preferred," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. Illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0056] Based on the above description of the structure and principle, those skilled in the art should understand that this utility model is not limited to the specific embodiments described above. Improvements and substitutions based on this utility model using techniques known in the art all fall within the protection scope of this utility model and should be defined by the claims.

Claims

1. A nylon pipe embedded quick connector for automobile, comprising a quick connector assembly press-fitted into a mounting hole (11) of a valve body (1), characterized in that: The quick-connect assembly includes a compression sleeve (3), a support base (2), and a retaining ring (6) arranged sequentially from top to bottom; The support base (2) has a vertical through hole (21) in the middle, and a retaining ring (5) is provided inside the vertical through hole (21). The lower end of the clamping sleeve (3) is fixedly inserted into the vertical through hole (21) and presses against the edge of the retaining ring (5); a tube puller sleeve (4) is slidably arranged inside the clamping sleeve (3). When the tube puller sleeve (4) slides downward, the lower end of the tube puller sleeve (4) can extend into the vertical through hole (21) and press against the middle of the retaining ring (5); The fixing ring (6) is slidably sleeved on the lower end of the support base (2), and a sealing ring (7) is installed inside the fixing ring (6). When the support base (2) slides down, the lower end of the support base (2) can push the sealing ring (7) out of the fixing ring (6).

2. The nylon tube-in-tube quick connector for automotive use according to claim 1, characterized by: The mounting hole (11) is provided with a sealing groove (12) that is compatible with the sealing ring (7), and the inner side wall of the mounting hole (11) is provided with a first limiting step (13) that is compatible with the fixing ring (6) at the position on the sealing groove (12); when the quick-connect assembly is pressed down as a whole, the first limiting step (13) positions the fixing ring (6), and the support seat (2) continues to slide down to push the sealing ring (7) out of the fixing ring (6) and press it into the sealing groove (12).

3. The automotive nylon tube embedded quick-connect coupling according to claim 1, characterized in that: The upper opening of the mounting hole (11) is provided with a first stop (14), and the outer side wall of the clamping sleeve (3) is provided with a first anti-disengagement tooth (34) that is adapted to the first stop (14).

4. The nylon tube-in-tube quick connector for automotive use according to claim 1, characterized by: The upper opening of the vertical through hole (21) of the support base (2) is provided with a second stop (22), and the lower end of the clamping sleeve (3) is provided with an insertion part (31) for inserting into the vertical through hole (21) of the support base (2), and the outer side wall of the insertion part (31) is provided with a second limiting protrusion (32) that is adapted to the second stop (22).

5. The nylon tube-in-tube quick connector for automotive use according to claim 1, characterized by: The support base (2) has an inclined guide surface (25) in the middle of the vertical through hole (21) that is compatible with the retaining ring (5).

6. The nylon tube-in-tube quick connector for automotive use according to claim 1, characterized by: The upper end of the outer wall of the support base (2) is provided with a limiting groove (23).

7. The nylon tube-in-tube quick connector for automotive use according to claim 1, characterized by: The center hole of the clamping sleeve (3) is provided with a second limiting step (33), and the lower end of the tube puller sleeve (4) is provided with a second anti-dislodgement tooth (41) that is adapted to the second limiting step (33).

8. The nylon tube-in-tube quick connector for automotive use according to claim 1, characterized by: The upper end of the tube puller sleeve (4) is provided with a limiting flange (42) that is compatible with the clamping sleeve (3).

9. The nylon tube-in-tube quick connector for automotive use according to claim 1, characterized by: The upper opening of the center hole of the fixing ring (6) is provided with a third stop (61), and the lower end of the support base (2) is provided with a first limiting protrusion (24) that is adapted to the second stop (22).

10. The nylon tube-in-tube quick connector for automotive use according to claim 1, characterized by: The inner wall of the retaining ring (5) is provided with several downwardly inclined spring pieces (51).

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