A snap-fit ​​pipe fitting unit

Abstract

This utility model belongs to the field of pipe fitting technology, specifically referring to a snap-fit ​​pipe fitting unit, which includes: a first fitting with a first snap-fit ​​end and a first connecting end; a second fitting with a second snap-fit ​​end and a second connecting end, the second connecting end having an anti-rotation groove; and a snap-fit ​​sealing ring located between the first and second snap-fit ​​ends. During assembly, the first and second snap-fit ​​ends can be flexibly adjusted in circumferential angle according to the position of the anti-rotation groove. Finally, the snap-fit ​​protrusion is snapped into the corresponding snap-fit ​​groove to connect and fix the first and second snap-fit ​​ends, thus forming a pipe fitting unit with a specific angle. This method eliminates the need for additional molds, allowing for the assembly of products with various circumferential installation angles to suit different application scenarios; compared to re-molding, it significantly reduces development costs and shortens project cycles.

Description

Technical Field

[0001] This utility model belongs to the field of pipe fitting technology, and specifically refers to a snap-fit ​​pipe fitting unit. Background Technology

[0002] In the field of new energy vehicles, the circumferential rotation of pipe joints must be strictly limited to suppress the damage caused by vibration. For this purpose, male and female joints are typically designed with a mating structure of anti-rotation keys and keyways. However, a practical contradiction arises: large automotive components with male joints are designed and manufactured by upstream suppliers, and the position of their anti-rotation keys is determined before production. Because upstream designers cannot fully predict the final installation environment and surrounding layout of this large automotive component in the vehicle, the preset orientation of the anti-rotation key often conflicts with the actual pipe routing. During downstream assembly, it is frequently found that the anti-rotation groove position of the standard female joint cannot allow for smooth pipe routing, or even makes installation impossible. To solve this problem, it is necessary to redevelop customized female joints, which significantly increases additional development costs and extends the project cycle. Utility Model Content

[0003] The purpose of this utility model is to provide a snap-fit ​​pipe joint unit with simple structure, low production cost and various installation angles.

[0004] The purpose of this utility model is achieved as follows:

[0005] A snap-fit ​​pipe fitting unit includes: a first fitting having a first snap-fit ​​end and a first connecting end for connecting to a first mounting component; a second fitting having a second snap-fit ​​end for adapting to the first snap-fit ​​end and a second connecting end for connecting to a second mounting component, the second connecting end having an anti-rotation groove; and a snap-fit ​​sealing ring located between the first snap-fit ​​end and the second snap-fit ​​end; wherein the first snap-fit ​​end and the second snap-fit ​​end can snap-fit ​​at different circumferential installation positions to change the circumferential installation angle between the first fitting and the second fitting.

[0006] This utility model also has the following features: in the first snap-fit ​​end and the second snap-fit ​​end, one snap-fit ​​end is provided with a snap-fit ​​insertion part and a plurality of snap-fit ​​protrusions evenly distributed on the outer side wall of the snap-fit ​​insertion part, and the side wall of the other snap-fit ​​end is provided with a plurality of evenly distributed snap-fit ​​grooves and an annular sealing surface provided on the inner side of the snap-fit ​​grooves; when the snap-fit ​​insertion part is inserted into the other snap-fit ​​end, the snap-fit ​​protrusions can selectively snap into the corresponding snap-fit ​​grooves, and at the same time, the snap-fit ​​insertion part abuts the snap-fit ​​sealing ring against the annular sealing surface.

[0007] This utility model also has the following features: the first connector is a bent pipe connector, and the second connector is a straight pipe connector.

[0008] This utility model also has the following features: the outer wall of the first connecting end of the first connector is provided with a guide part, a sealing ring mounting groove and an annular limiting part in sequence, and a first O-ring is provided in the sealing ring mounting groove.

[0009] This utility model also has the following feature: a barb is provided between the sealing ring mounting groove and the annular limiting part.

[0010] This utility model also has the following features: a second O-ring and an annular fixing sleeve are provided inside the second connecting end of the second connector; an O-ring abutment surface is provided on the inner wall of the second connector, and the annular fixing sleeve abuts the second O-ring against the O-ring abutment surface.

[0011] This utility model also has the following features: the annular fixing sleeve has several deformation holes at the end away from the second O-ring, and the inner wall of the end is provided with a slope surface to correspond to the slope protrusion of the second mounting part.

[0012] This utility model also has the following feature: a first quick slot is provided on the second connecting end of the second connector, which communicates with the interior. The first quick slot is provided with a quick insert. The quick insert has a disassembly part and two insertion parts that are integrally formed on the left and right sides of the disassembly part, respectively. The insertion parts can enter the interior through the first quick slot and are used to engage with the second quick slot of the second mounting piece.

[0013] This utility model also has the following features: the outer end of the plug is bent to form an anti-detachment part, and a corresponding anti-detachment groove is provided on the side wall of the second connection end.

[0014] This utility model also has the following feature: several groove wall protrusions are provided on the left and right side walls of the first slot.

[0015] The outstanding and beneficial technical effects of this utility model compared to the prior art are:

[0016] The second connector of this utility model is provided with an anti-rotation groove. When assembling the first connector and the second connector, the first snap-fit ​​end and the second snap-fit ​​end can be flexibly adjusted in circumferential installation angle according to the position of the anti-rotation groove. Finally, the snap-fit ​​protrusion is snapped into the corresponding snap-fit ​​groove to connect and fix the first snap-fit ​​end and the second snap-fit ​​end, thereby forming a pipe connector unit with a specific angle, so as to reduce the difficulty of pipeline layout in complex environments.

[0017] This method eliminates the need for additional molds and allows for the assembly of products with various circumferential installation angles to suit different application scenarios. Compared to creating new molds, it significantly reduces development costs and shortens project cycles, making it suitable for small-batch market demands or early-stage pilot projects. This helps companies respond quickly to the market and seize opportunities. Attached Figure Description

[0018] Figure 1This is one of the structural schematic diagrams of the pipe connector unit of this utility model.

[0019] Figure 2 This is the second structural schematic diagram of the pipe connector unit of this utility model.

[0020] Figure 3 This is an exploded view of the pipe connector unit of this utility model.

[0021] Figure 4 This is a schematic diagram of the installation structure of the pipe connector unit of this utility model.

[0022] The meaning of the labels in the diagram:

[0023] First connector 1; Second connector 2; Quick insert 3; Second O-ring 4; Annular retaining sleeve 5; Snap-fit ​​sealing ring 6;

[0024] First snap-fit ​​end 11; snap-fit ​​insertion part 111; snap-fit ​​protrusion 112; first connecting end 12; guide part 121; sealing ring mounting groove 122; annular limiting part 123; first O-ring 124; barb part 125;

[0025] Second snap-fit ​​end 21; snap-fit ​​groove 211; annular sealing surface 212; second connecting end 22; anti-rotation groove 221; groove wall protrusion 222; anti-disengagement groove 223; limiting boss 224; O-ring abutment surface 23; first quick slot 24;

[0026] Disassembly part 31; Plug-in part 32; Anti-detachment part 33;

[0027] Deformation opening 51; Sloping surface 52;

[0028] First mounting component 100; fixing sleeve 101;

[0029] Second mounting component 200; ramp protrusion 201; second quick slot 202; anti-rotation key 203. Detailed Implementation

[0030] The present invention will be further described below with reference to specific embodiments:

[0031] Example 1:

[0032] like Figure 1 , 2 As shown in Figure 3, a snap-fit ​​pipe fitting unit is used to connect a first mounting component 100 and a second mounting component 200. It includes a first connector 1, a second connector 2, a snap-fit ​​sealing ring 6, a quick-connect insert 3, a first O-ring 124, a second O-ring 4, and an annular retaining sleeve 5.

[0033] Specifically, the first connector 1 has a first snap-fit ​​end 11 for connecting to the second connector 2 and a first connecting end 12 for connecting to the first mounting member 100. The second connector 2 has a second snap-fit ​​end 21 for adapting to the first snap-fit ​​end 11 and a second connecting end 22 for connecting to the second mounting member 200. The second connecting end 22 is provided with an anti-rotation groove 221 that is adapted to the anti-rotation key 203 of the second mounting member 200. A snap-fit ​​sealing ring 6 is provided between the end faces of the first snap-fit ​​end 11 and the second snap-fit ​​end 21. The snap-fit ​​sealing ring 6 is a gasket-type sealing ring. The first snap-fit ​​end 11 and the second snap-fit ​​end 21 can be snapped together at different circumferential installation positions to change the circumferential installation angle between the first connector 1 and the second connector 2.

[0034] In this embodiment, the first snap-fit ​​end 11 is provided with a snap-fit ​​insertion part 111 and a plurality of snap-fit ​​protrusions 112 evenly distributed on the outer wall of the snap-fit ​​insertion part 111. The snap-fit ​​insertion part 111 is annular, and its outer wall dimension is slightly larger than the main body dimension of the first connector 1. The inner wall end of the snap-fit ​​insertion part 111 is provided with a beveled guide surface. The snap-fit ​​protrusions 112 are evenly distributed on the outer wall of the snap-fit ​​insertion part 111 along the circumferential direction, and their number is generally 2-8.

[0035] The second snap-fit ​​end 21 has several evenly distributed snap-fit ​​grooves 211 and an annular sealing surface 212 disposed inside the snap-fit ​​grooves 211 on its side wall. The inner wall size of the second snap-fit ​​end 21 is adapted to the outer wall size of the snap-fit ​​insertion part 111. The snap-fit ​​grooves 211 are through holes. When the snap-fit ​​insertion part 111 is inserted into the second snap-fit ​​end 21, the snap-fit ​​protrusions 112 can selectively snap into the corresponding snap-fit ​​grooves 211. At the same time, the end face of the snap-fit ​​insertion part 111 abuts the snap-fit ​​sealing ring 6 against the annular sealing surface 212, thereby achieving snap-fit ​​fixation and end face sealing.

[0036] In this embodiment, the number of snap-fit ​​slots 211 is generally 3-8, which is greater than or equal to the number of snap-fit ​​protrusions 112. The number of both must ensure that the first connector 1 and the second connector 2 have different circumferential installation positions. For example, when there are 3 snap-fit ​​slots 211, there are 3 snap-fit ​​protrusions 112. In this case, the first connector 1 and the second connector 2 have three circumferential installation positions, each circumferential installation position being 120 degrees apart. Similarly, when there are 4 snap-fit ​​slots 211, there are 2 or 4 snap-fit ​​protrusions 112; when there are 5 snap-fit ​​slots 211, there are 5 snap-fit ​​protrusions 112; when there are 6 snap-fit ​​slots 211, there are 2, 3, or 6 snap-fit ​​protrusions 112; and when there are 8 snap-fit ​​slots 211, there are 2, 4, or 8 snap-fit ​​protrusions 112. Generally speaking, the more snap-fit ​​grooves 211 and snap-fit ​​protrusions 112 there are, the more circumferential installation positions there are for the first connector 1 and the second connector 2, and the higher the reliability of the connection.

[0037] Preferably, in this embodiment, there are 8 snap-fit ​​grooves 211 and 2 snap-fit ​​protrusions 112, which means that the first connector 1 and the second connector 2 have eight circumferential installation positions that can be adjusted. Each circumferential installation position is 45 degrees apart, which can meet the needs of different installation scenarios and reduce the difficulty of pipeline layout in complex environments.

[0038] In this embodiment, during the assembly of the first connector 1 and the second connector 2, the first snap-fit ​​end 11 and the second snap-fit ​​end 21 can be flexibly adjusted in circumferential installation angle according to the position of the anti-rotation groove. Finally, the snap-fit ​​protrusion 112 is snapped into the corresponding snap-fit ​​groove 211 to connect and fix the first snap-fit ​​end 11 and the second snap-fit ​​end 21, thereby forming a pipe connector unit with a specific angle. The size of this pipe connector unit is basically the same as the original standard female connector. This method does not require additional mold opening and can assemble products with various circumferential installation angles as needed, suitable for different application scenarios. Compared with re-molding, it significantly reduces development costs and shortens the project cycle, making it suitable for small-batch market demand or early-stage sample projects.

[0039] like Figure 4 As shown, in this embodiment, the first connector 1 is a bent pipe connector, the second connector 2 is a straight pipe connector, the first mounting component 100 is a pipeline, and the second mounting component 200 is an automotive component with a male connector (e.g., an exhaust chamber).

[0040] The connection structure of the first connecting end 12 of the first connector 1 can be varied, depending on the model of the corresponding female connector. For example... Figure 3As shown, in this embodiment, the outer wall of the first connecting end 12 is sequentially provided with a guide portion 121, a sealing ring mounting groove 122, and an annular limiting portion 123. A first O-ring 124 is provided in the sealing ring mounting groove 122. The first mounting component 100 (pipeline) is directly mounted on the first connecting end 12 and fixedly connected by a fixing sleeve 101. To increase the stability of the connection structure, a barb portion 125 is also provided on the first connecting end 12 between the sealing ring mounting groove 122 and the annular limiting portion 123. When the fixing sleeve 101 is fixed, the barb portion 125 can be partially embedded into the inner wall of the first mounting component 100 (pipeline).

[0041] In this embodiment, the male connector of the second mounting component 200 and the second connector 2 are connected and fixed by a quick-connect structure. There are many quick-connect structures on the market; the quick-connect structure in this embodiment is as follows:

[0042] like Figure 4 As shown, the outer wall of the male connector is provided with a ramp protrusion 201, an annular second quick slot 202 and an anti-rotation key 203 in sequence from the outside to the inside.

[0043] like Figure 3 , 4 As shown, the inner wall of the second connector 2 is provided with an O-ring abutment surface 23 and a second O-ring 4 and an annular fixing sleeve 5 are installed thereon. Specifically, the inner wall of the second connector 2 is provided with an annular mounting protrusion. One side of the annular mounting protrusion forms an annular sealing surface 212 and a snap-fit ​​sealing ring 6 is installed thereon, and the other side forms an O-ring abutment surface 23 and a second O-ring 4 is installed thereon. The outer diameter of the male connector is adapted to the inner diameter of the annular mounting protrusion, and the outer diameter of the ramp protrusion 201 is adapted to the inner diameter of the second connecting end 22.

[0044] The annular fixing sleeve 5 has an annular structure. One end of the sleeve abuts the second O-ring 4 against the O-ring abutment surface 23, and the other end is provided with a plurality of pairs of deformation ports 51. In this embodiment, a pair of symmetrically arranged deformation ports 51 are provided to facilitate the installation of the annular fixing sleeve 5 into the second connector 2 after deformation. At the same time, a ramp surface 52 is provided at the inner wall end away from the second O-ring 4. The ramp surface 52 is used to adapt to the ramp protrusion 201 of the second mounting part 200. When the male connector extends into the second connecting end 22 of the second connector 2, the inner diameter of the male connector is the same as the inner diameter of the first connector 1. The outer end face of the male connector can be limited by the end face of the snap-fit ​​insertion part 111. The ramp protrusion 201 abuts against the ramp surface 52 of the annular fixing sleeve 5, pushing the annular fixing sleeve 5 closer to the second O-ring 4, and together with the O-ring abutment surface 23, squeezing the second O-ring 4, causing the second O-ring 4 to undergo radial deformation, thereby sealing the gap between the outer surface of the male connector and the inner surface of the second connector 2.

[0045] The second connecting end 22 of the second connector 2 has a first quick slot 24 that communicates with the interior. The first quick slot 24 is provided with a quick insert 3. The quick insert 3 is detachably disposed between the second connector 2 and the second mounting piece 200 and is used to fix the axial position of the two.

[0046] Specifically, such as Figure 3 As shown, the quick-connect plug 3 is U-shaped and has a disassembly part 31, two insertion parts 32 integrally formed on the left and right sides of the disassembly part 31, and an anti-detachment part 33 bent at the outer end of the insertion part 32. When the quick-connect plug 3 is installed, the disassembly part 31 can form a gap with the outer surface of the second connector 2, which is convenient for the user to disassemble directly or quickly disassemble with a specific tool. The two insertion parts 32 enter the interior through the first quick slot 24 and engage with the second quick slot 202 of the second mounting part 200, thereby fixing the second connector 2 to the second mounting part 200.

[0047] To prevent the quick-connect plug 3 from automatically detaching, the outer end of the plug-in portion 32 is bent to form an anti-detachment portion 33. Simultaneously, two corresponding anti-detachment grooves 223 are provided on the side wall of the second connecting end 22. Each anti-detachment groove 223 is surrounded by a limiting boss 224. The front side of the front portion of the limiting boss 224 is provided with a guide slope for guiding the anti-detachment portion 33 into the anti-detachment groove 223, allowing the corresponding anti-detachment portion 33 to smoothly enter and be contained within the corresponding anti-detachment groove 223. Furthermore, the rear side of the front portion of the limiting boss 224 (i.e., the front side wall of the anti-detachment groove 223) is provided with an arc-shaped guide surface for guiding the anti-detachment portion 33 out of the anti-detachment groove 223; the rear portion of the limiting boss 224 has a limiting surface (i.e., the rear side wall of the anti-detachment groove 223) to prevent over-installation of the quick-connect plug 3.

[0048] Preferably, the left and right sidewalls of the first quick slot 24 are provided with a number of slot wall protrusions 222 to limit the installation angle and axial position of the quick plug 3.

[0049] Example 2:

[0050] This embodiment is basically the same as Embodiment 1, except that:

[0051] In this embodiment, the second snap-fit ​​end 21 is provided with a snap-fit ​​insertion part 111 and a plurality of snap-fit ​​protrusions 112 evenly distributed on the outer side wall of the snap-fit ​​insertion part 111. The snap-fit ​​insertion part 111 is annular, and the number of snap-fit ​​protrusions 112 is generally 2-8, and they are evenly and symmetrically arranged on the periphery of the outer side wall of the snap-fit ​​insertion part 111.

[0052] The side wall of the first snap-fit ​​end 11 is provided with a plurality of evenly distributed snap-fit ​​grooves 211 and an annular sealing surface 212 disposed inside the snap-fit ​​grooves 211. The inner wall size of the first snap-fit ​​end 11 is adapted to the outer wall size of the snap-fit ​​insertion part 111. When the snap-fit ​​insertion part 111 is inserted into the first snap-fit ​​end 11, the snap-fit ​​protrusion 112 can selectively snap into the corresponding snap-fit ​​groove 211. At the same time, the end face of the snap-fit ​​insertion part 111 abuts the snap-fit ​​sealing ring 6 against the annular sealing surface 212, thereby achieving snap-fit ​​fixation and end face sealing.

[0053] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A clamp-type pipe joint unit characterized by comprising: include: The first connector (1) has a first snap-fit ​​end (11) and a first connecting end (12) for connecting the first mounting member (100); The second connector (2) has a second snap-fit ​​end (21) for adapting to the first snap-fit ​​end (11) and a second connecting end (22) for connecting to the second mounting member (200), wherein the second connecting end (22) is provided with an anti-rotation groove (221); and A snap-fit ​​sealing ring (6) is located between the first snap-fit ​​end (11) and the second snap-fit ​​end (21); The first snap-fit ​​end (11) and the second snap-fit ​​end (21) can be snapped together at different circumferential installation positions to change the circumferential installation angle between the first connector (1) and the second connector (2).

2. The snap-fit ​​pipe fitting unit according to claim 1, characterized in that: In the first snap-fit ​​end (11) and the second snap-fit ​​end (21), one snap-fit ​​end is provided with a snap-fit ​​insertion part (111) and a plurality of snap-fit ​​protrusions (112) evenly distributed on the outer side wall of the snap-fit ​​insertion part (111), and the other snap-fit ​​end is provided with a plurality of evenly distributed snap-fit ​​grooves (211) and an annular sealing surface (212) provided on the inner side of the snap-fit ​​grooves (211) on the side wall. When the snap-fit ​​insertion part (111) is inserted into another snap-fit ​​end, the snap-fit ​​protrusion (112) can selectively snap into the corresponding snap-fit ​​groove (211), and at the same time, the snap-fit ​​insertion part (111) abuts the snap-fit ​​sealing ring (6) against the annular sealing surface (212).

3. The snap-fit ​​pipe fitting unit according to claim 2, characterized in that: The first connector (1) is a bend connector, and the second connector (2) is a straight connector.

4. The snap-fit ​​pipe fitting unit according to claim 1, characterized in that: The outer side wall of the first connecting end (12) of the first connector (1) is provided with a guide part (121), a sealing ring mounting groove (122) and an annular limiting part (123) in sequence, and a first O-ring (124) is provided in the sealing ring mounting groove (122).

5. A snap-fit ​​pipe fitting unit according to claim 4, characterized in that: A barb (125) is provided between the sealing ring mounting groove (122) and the annular limiting part (123).

6. A snap-fit ​​pipe fitting unit according to any one of claims 1-5, characterized in that: The second connector (2) is provided with a second O-ring (4) and an annular fixing sleeve (5) inside the second connecting end (22); The inner wall of the second connector (2) is provided with an O-ring abutment surface (23), and the annular fixing sleeve (5) abuts the second O-ring (4) against the O-ring abutment surface (23).

7. A snap-fit ​​pipe fitting unit according to claim 6, characterized in that: The annular fixing sleeve (5) has a plurality of deformation openings (51) at the end away from the second O-ring (4), and the inner wall of the end is provided with a slope surface (52) to correspond to the slope protrusion (201) of the second mounting member (200).

8. A snap-fit ​​pipe fitting unit according to claim 6, characterized in that: The second connector (2) has a first quick slot (24) that communicates with the interior on its second connecting end (22). The first quick slot (24) is provided with the quick plug (3). The quick plug (3) has a disassembly part (31) and two insertion parts (32) that are integrally formed on the left and right sides of the disassembly part (31). The insertion part (32) can enter the interior through the first quick slot (24) and is used to engage with the second quick slot (202) of the second mounting part (200).

9. A snap-fit ​​pipe fitting unit according to claim 8, characterized in that: The outer end of the plug (32) is bent to form an anti-detachment part (33), and a corresponding anti-detachment groove (223) is provided on the side wall of the second connection end (22).

10. A snap-fit ​​pipe fitting unit according to claim 8, characterized in that: The first slot (24) has several slot wall protrusions (222) on its left and right side walls.

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