A reverse insertion prevention structure

Abstract

This utility model proposes an anti-reverse insertion structure, including a male insertion end and a female insertion end. Axial fixation is achieved through a symmetrically arranged elastic interlocking mechanism to achieve stable installation and fixation. The male end and the female end have at least one set of first air passages and second air passages that are mutually connected after insertion. An anti-misinsertion guide structure is asymmetrically arranged on the outer wall of the male end and matches the limiting structure at the female end to achieve a zero misinsertion rate. The mating end faces of the male end and the female end are provided with a sealing system. The sealing system has built-in elastic sealing elements to ensure the airtightness of the male end and the female end after insertion.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic connector technology, and more specifically, to an anti-reverse insertion structure. Background Technology

[0002] With the upgrading of automotive intelligence, seat massage functions are gradually becoming standard features instead of high-end optional extras. Currently, there are two main technical approaches to connecting the seat cushion massage air circuit and the backrest controller:

[0003] Direct connection to long air tube solution: low cost but difficult to assemble, long air tubes are easy to get tangled and knotted (average installation time ≥ 8 minutes / unit), and the whole unit needs to be disassembled for maintenance;

[0004] Traditional quick-connect connector solution: While improving assembly efficiency, it has a fatal flaw:

[0005] Risk of snap-fit ​​breakage: Single-point snap-fit ​​structures experience stress concentration under vibration conditions (measured peak stress ≥ 85 MPa), resulting in a lifespan of less than 30,000 cycles (industry requirement 100,000 cycles).

[0006] Preventing misinsertion failure: Relies on color / text labels (misinsertion rate > 15%), with an error rate as high as 34% in dimly lit environments.

[0007] The single-point snap-fit ​​structure has been solved in patent CN221258067U, but the problem of preventing misinsertion failure still needs to be addressed.

[0008] Therefore, there is an urgent need for a reverse insertion prevention structure. Utility Model Content

[0009] In view of this, in order to solve the above problems, this utility model proposes an anti-reverse insertion structure, including: a male insertion end 10 and a female insertion end 20, which are axially fixed by a symmetrically arranged elastic interlocking mechanism 30 to achieve stable installation and fixation. The male end 10 and the female end 20 have at least one set of first air passages 12 and second air passages 28 that are mutually connected after insertion. An anti-misinsertion guide structure 11 is asymmetrically arranged on the outer wall of the male end 10 and matches the limiting structure 21 at the female end 20 to achieve zero misinsertion rate. The mating end face of the male end 10 and the female end 20 is provided with a sealing system 26, and the sealing system 26 has a built-in elastic sealing element 27 to ensure the airtightness of the male end 10 and the female end 20 after insertion.

[0010] A reverse-insertion prevention structure is characterized by comprising: a male insertion end 10 and a female insertion end 20, which are axially fixed by symmetrically arranged elastic interlocking mechanisms 30; the male end 10 and the female end 20 have at least one set of first air passages 12 and second air passages 28 that are mutually connected after insertion; an anti-misinsertion guide structure 11 is asymmetrically disposed on the outer wall of the male end 10 and matches the limiting structure 21 at the female end 20; a sealing system 26 is provided on the mating end face of the male end 10 and the female end 20, and the sealing system 26 has an internal elastic sealing element 27.

[0011] In some embodiments, the female end 20 is provided with a multi-functional mounting base at its outer casing, the multi-functional mounting base including an elastic engagement unit 23 and an auxiliary assembly unit 24.

[0012] Furthermore, the elastic locking unit 23 includes a deformable part 231 and a locking part 232. The deformable part 231 is located at the input end of the locking part 232. The diameter of the deformable part 231 is smaller than the diameter of the locking part 232. When the air tube passes through the deformable part 231, due to its narrow shape, the air tube deforms and locks into the locking part 232. After reaching the locking part 232, it returns to its original shape. The elastic locking unit 23 is used to organize and fix the air tubes other than the male end 10 and the female end 20 to prevent them from interfering with the air tubes other than the male end 10 and the female end 20.

[0013] Furthermore, the deformable portion 231 is a symmetrically arranged lip structure with the opening facing upwards.

[0014] Furthermore, the auxiliary assembly unit 24 is a snap-fit ​​structure or a threaded fastening unit. The female end 20 is fixed to the vehicle body frame or surrounding mating parts through the auxiliary assembly unit 24, which saves materials and has strong adaptability compared with conventional fixing methods.

[0015] In some embodiments, the anti-misinsertion guide structure 11 includes at least one protrusion, and the limiting structure 21 includes at least one recess, wherein the protrusion and the recess are matched and engaged.

[0016] Furthermore, the sealing system 26 includes at least two stages of sealing grooves with decreasing depths, the depth ratio being 1.5-3:1.

[0017] In some embodiments, both the male end 10 and the female end 20 are provided with a pipe crimping portion 25 with an anti-slip structure. The pipe crimping portion 25 of the male end 10 is located on the outer wall of the opposite end of the first air passage 12 of the male end 10 and the female end 20 insertion portion, and the pipe crimping portion 25 of the female end 20 is located on the outer wall of the opposite end of the second air passage 28 of the male end 10 and the female end 20 insertion portion.

[0018] In some embodiments, the plug-in female end 20 has a built-in muffler positioning structure, which consists of at least two muffler positioning ribs 221. The muffler positioning ribs 221 are circumferentially spaced on the inner wall of the plug-in female end 20 for engaging the muffler.

[0019] Furthermore, the muffler positioning rib 221 includes an axial guide portion 222 and a radial anti-detachment portion 223. The guide portion 222 and the anti-detachment portion 223 are integrally formed. The guide portion 222 is located near the insertion point of the male end 10 and the female end 20.

[0020] The beneficial effects of this utility model are as follows: This utility model proposes an anti-reverse insertion structure, including: a male insertion end 10 and a female insertion end 20, which are axially fixed by a symmetrically arranged elastic interlocking mechanism 30 to achieve stable installation and fixation. The male end 10 and the female end 20 have at least one set of first air passages 12 and second air passages 28 that are mutually connected after insertion. The anti-misinsertion guide structure 11 is asymmetrically arranged on the outer wall of the male end 10 and matches the limiting structure 21 at the female end 20 to achieve zero misinsertion rate. The mating end face of the male end 10 and the female end 20 is provided with a sealing system 26, and the sealing system 26 has a built-in elastic sealing element 27 to ensure the airtightness of the male end 10 and the female end 20 after insertion. Attached Figure Description

[0021] Figure 1 This is an exploded view of the first and second air passages that are interconnected after insertion on the male and female ends of the anti-reverse insertion structure of this utility model.

[0022] Figure 2 This is a cross-sectional view of the male and female ends of the anti-reverse insertion structure of this utility model, which have a first air passage and a second air passage that are mutually connected after insertion.

[0023] Figure 3 This is an exploded view of the first and second air passages on the male and female ends of the anti-reverse insertion structure of this utility model, which are mutually connected after insertion.

[0024] Figure 4 This is a cross-sectional view of the male and female ends of the anti-reverse insertion structure of this utility model, which have two sets of first and second air passages that are interconnected after insertion.

[0025] Figure 5 This is an exploded view of the first and second air passages on the male and female ends of the anti-reverse insertion structure of this utility model, which are interconnected after insertion.

[0026] Figure 6This is a cross-sectional view of the male and female ends of the anti-reverse insertion structure of this utility model, which have three sets of first and second air passages that are interconnected after insertion.

[0027] Figure 7 This is a structural diagram of the assembled structure of the anti-reverse insertion structure of this utility model, showing that the male and female ends have three sets of first and second air passages that are interconnected after insertion.

[0028] Figure 8 This is a layout diagram of the positioning ribs of the muffler of this utility model.

[0029] Explanation of main component symbols

[0030] Male end 10, anti-misinsertion guide structure 11, first air passage 12, female end 20, limiting structure 21, silencer positioning rib 221, guide part 222, anti-disengagement part 223, elastic locking unit 23, deformation part 231, locking part 232, auxiliary assembly unit 24, pipeline crimping part 25, sealing system 26, elastic sealing element 27, second air passage 28, elastic interlocking mechanism 30.

[0031] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0032] The following embodiments are described to aid in understanding this application. These embodiments are not, and should not be construed as, limiting the scope of protection of this application.

[0033] In the following description, those skilled in the art will recognize that throughout this discussion, components may be described as individual functional units (which may include subunits), but those skilled in the art will recognize that various components or portions thereof may be divided into individual components or may be integrated together (including integrated within a single system or component).

[0034] Furthermore, the connection between components or systems is not intended to be limited to a direct connection; on the contrary, data between these components may be modified, reformatted, or otherwise altered by intermediate components. Additionally, other or fewer connections may be used. It should also be noted that the terms "connection," "link," or "input" should be understood to include direct connections, indirect connections via one or more intermediate devices, and wireless connections. Example 1:

[0035] like Figure 1-2 and Figure 8As shown, an anti-reverse insertion structure includes: a male insertion end 10 and a female insertion end 20, which are axially fixed by symmetrically arranged elastic interlocking mechanisms 30. The male end 10 and the female end 20 have a first air passage 12 and a second air passage 28 that are mutually connected after insertion. An anti-misinsertion guide structure 11 is asymmetrically disposed on the outer wall of the male end 10 and matches the limiting structure 21 at the female end 20. The anti-misinsertion guide structure 11 includes at least one protrusion, and the limiting structure 21 includes at least one recess. The protrusion and the recess are matched and engaged. The sealing system 26 includes at least two levels of sealing grooves with decreasing depths and a depth ratio of 1.5-3:1. The mating surfaces of the male end 10 and the female end 20 are provided with the sealing system 26. The sealing system 26 has a built-in elastic seal 27. The outer shell of the female end 20 is provided with a multi-functional mounting base. The multi-functional mounting base includes an elastic locking element. The unit 23 and the auxiliary assembly unit 24 are used. The elastic engaging unit 23 includes a deformable part 231 and a locking part 232. The deformable part 231 is located at the input end of the locking part 232. The diameter of the deformable part 231 is smaller than the diameter of the locking part 232. The air tube passes through the deformable part 231. Due to its narrow shape, the air tube deforms and is locked into the locking part 232. After reaching the locking part 232, it returns to its original shape. The elastic engaging unit 23 is used to organize and fix the air tubes other than the male end 10 and the female end 20 to prevent them from interfering with the air tubes other than the male end 10 and the female end 20. The deformable part 231 is a symmetrically arranged lip structure with the opening facing upward. The auxiliary assembly unit 24 is a snap-fit ​​structure or a threaded fastening unit. The female end 20 is fixed to the vehicle frame or surrounding parts through the auxiliary assembly unit 24. Compared with conventional fixing methods, it saves materials and has strong adaptability.

[0036] Both the male end 10 and the female end 20 are provided with a pipe crimping part 25 with an anti-slip structure. The pipe crimping part 25 of the male end 10 is located on the outer wall of the opposite end of the first air passage 12 of the male end 10 and the female end 20 insertion part. The pipe crimping part 25 of the female end 20 is located on the outer wall of the opposite end of the second air passage 28 of the male end 10 and the female end 20 insertion part.

[0037] The plug-in female end 20 has a built-in muffler positioning structure, which consists of at least two muffler positioning ribs 221. The muffler positioning ribs 221 are circumferentially spaced on the inner wall of the plug-in female end 20 for engaging the muffler. The muffler positioning ribs 221 include an axial guide portion 222 and a radial anti-detachment portion 223. The guide portion 222 and the anti-detachment portion 223 are integrally formed. The guide portion 222 is located near the plug-in point of the male end 10 and the female end 20.

[0038] The beneficial effects of this utility model are as follows: This utility model proposes an anti-reverse insertion structure, including: a male insertion end 10 and a female insertion end 20, which are axially fixed by a symmetrically arranged elastic interlocking mechanism 30 to achieve stable installation and fixation. The male end 10 and the female end 20 have at least one set of first air passages 12 and second air passages 28 that are mutually connected after insertion. The anti-misinsertion guide structure 11 is asymmetrically arranged on the outer wall of the male end 10 and matches the limiting structure 21 at the female end 20 to achieve zero misinsertion rate. The mating end face of the male end 10 and the female end 20 is provided with a sealing system 26, and the sealing system 26 has a built-in elastic sealing element 27 to ensure the airtightness of the male end 10 and the female end 20 after insertion. Example 2:

[0039] like Figure 3-4 and Figure 8 As shown, an anti-reverse insertion structure includes: a male insertion end 10 and a female insertion end 20, which are axially fixed by symmetrically arranged elastic interlocking mechanisms 30. The male end 10 and the female end 20 have two sets of first air passages 12 and second air passages 28 that are interconnected after insertion. An anti-misinsertion guide structure 11 is asymmetrically disposed on the outer wall of the male end 10 and matches the limiting structure 21 at the female end 20. The anti-misinsertion guide structure 11 includes at least one protrusion, and the limiting structure 21 includes at least one recess. The protrusion and the recess are matched and engaged. The sealing system 26 includes at least two levels of sealing grooves with decreasing depths and a depth ratio of 1.5-3:1. The mating surfaces of the male end 10 and the female end 20 are provided with the sealing system 26. The sealing system 26 has a built-in elastic seal 27. The outer shell of the female end 20 is provided with a multi-functional mounting base. The multi-functional mounting base includes an elastic locking element. The unit 23 and the auxiliary assembly unit 24 are used. The elastic engaging unit 23 includes a deformable part 231 and a locking part 232. The deformable part 231 is located at the input end of the locking part 232. The diameter of the deformable part 231 is smaller than the diameter of the locking part 232. The air tube passes through the deformable part 231. Due to its narrow shape, the air tube deforms and is locked into the locking part 232. After reaching the locking part 232, it returns to its original shape. The elastic engaging unit 23 is used to organize and fix the air tubes other than the male end 10 and the female end 20 to prevent them from interfering with the air tubes other than the male end 10 and the female end 20. The deformable part 231 is a symmetrically arranged lip structure with the opening facing upward. The auxiliary assembly unit 24 is a snap-fit ​​structure or a threaded fastening unit. The female end 20 is fixed to the vehicle frame or surrounding parts through the auxiliary assembly unit 24. Compared with conventional fixing methods, it saves materials and has strong adaptability.

[0040] Both the male end 10 and the female end 20 are provided with a pipe crimping part 25 with an anti-slip structure. The pipe crimping part 25 of the male end 10 is located on the outer wall of the opposite end of the first air passage 12 of the male end 10 and the female end 20 insertion part. The pipe crimping part 25 of the female end 20 is located on the outer wall of the opposite end of the second air passage 28 of the male end 10 and the female end 20 insertion part.

[0041] The plug-in female end 20 has a built-in muffler positioning structure, which consists of at least two muffler positioning ribs 221. The muffler positioning ribs 221 are circumferentially spaced on the inner wall of the plug-in female end 20 for engaging the muffler. The muffler positioning ribs 221 include an axial guide portion 222 and a radial anti-detachment portion 223. The guide portion 222 and the anti-detachment portion 223 are integrally formed. The guide portion 222 is located near the plug-in point of the male end 10 and the female end 20.

[0042] The beneficial effects of this utility model are as follows: This utility model proposes an anti-reverse insertion structure, including: a male insertion end 10 and a female insertion end 20, which are axially fixed by a symmetrically arranged elastic interlocking mechanism 30 to achieve stable installation and fixation. The male end 10 and the female end 20 have at least one set of first air passages 12 and second air passages 28 that are mutually connected after insertion. The anti-misinsertion guide structure 11 is asymmetrically arranged on the outer wall of the male end 10 and matches the limiting structure 21 at the female end 20 to achieve zero misinsertion rate. The mating end face of the male end 10 and the female end 20 is provided with a sealing system 26, and the sealing system 26 has a built-in elastic sealing element 27 to ensure the airtightness of the male end 10 and the female end 20 after insertion. Example 3:

[0043] like Figure 5-7 and Figure 8As shown, an anti-reverse insertion structure includes: a male insertion end 10 and a female insertion end 20, which are axially fixed by symmetrically arranged elastic interlocking mechanisms 30. The male end 10 and the female end 20 have three sets of first air passages 12 and second air passages 28 that are interconnected after insertion. An anti-misinsertion guide structure 11 is asymmetrically disposed on the outer wall of the male end 10 and matches the limiting structure 21 at the female end 20. The anti-misinsertion guide structure 11 includes at least one protrusion, and the limiting structure 21 includes at least one recess. The protrusion and the recess are matched and engaged. The sealing system 26 includes at least two levels of sealing grooves with decreasing depths and a depth ratio of 1.5-3:1. The mating surfaces of the male end 10 and the female end 20 are provided with the sealing system 26. The sealing system 26 has built-in elastic seals 27. The outer shell of the female end 20 is provided with a multi-functional mounting base. The multi-functional mounting base includes an elastic locking element. The unit 23 and the auxiliary assembly unit 24 are used. The elastic engaging unit 23 includes a deformable part 231 and a locking part 232. The deformable part 231 is located at the input end of the locking part 232. The diameter of the deformable part 231 is smaller than the diameter of the locking part 232. The air tube passes through the deformable part 231. Due to its narrow shape, the air tube deforms and is locked into the locking part 232. After reaching the locking part 232, it returns to its original shape. The elastic engaging unit 23 is used to organize and fix the air tubes other than the male end 10 and the female end 20 to prevent them from interfering with the air tubes other than the male end 10 and the female end 20. The deformable part 231 is a symmetrically arranged lip structure with the opening facing upward. The auxiliary assembly unit 24 is a snap-fit ​​structure or a threaded fastening unit. The female end 20 is fixed to the vehicle frame or surrounding parts through the auxiliary assembly unit 24. Compared with conventional fixing methods, it saves materials and has strong adaptability.

[0044] Both the male end 10 and the female end 20 are provided with a pipe crimping part 25 with an anti-slip structure. The pipe crimping part 25 of the male end 10 is located on the outer wall of the opposite end of the first air passage 12 of the male end 10 and the female end 20 insertion part. The pipe crimping part 25 of the female end 20 is located on the outer wall of the opposite end of the second air passage 28 of the male end 10 and the female end 20 insertion part.

[0045] The plug-in female end 20 has a built-in muffler positioning structure, which consists of at least two muffler positioning ribs 221. The muffler positioning ribs 221 are circumferentially spaced on the inner wall of the plug-in female end 20 for engaging the muffler. The muffler positioning ribs 221 include an axial guide portion 222 and a radial anti-detachment portion 223. The guide portion 222 and the anti-detachment portion 223 are integrally formed. The guide portion 222 is located near the plug-in point of the male end 10 and the female end 20.

[0046] The beneficial effects of this utility model are as follows: This utility model proposes an anti-reverse insertion structure, including: a male insertion end 10 and a female insertion end 20, which are axially fixed by a symmetrically arranged elastic interlocking mechanism 30 to achieve stable installation and fixation. The male end 10 and the female end 20 have at least one set of first air passages 12 and second air passages 28 that are mutually connected after insertion. The anti-misinsertion guide structure 11 is asymmetrically arranged on the outer wall of the male end 10 and matches the limiting structure 21 at the female end 20 to achieve zero misinsertion rate. The mating end face of the male end 10 and the female end 20 is provided with a sealing system 26, and the sealing system 26 has a built-in elastic sealing element 27 to ensure the airtightness of the male end 10 and the female end 20 after insertion.

[0047] Although this application discloses several aspects and embodiments, other aspects and embodiments will be obvious to those skilled in the art. Various modifications and improvements can be made without departing from the concept of this application, and all such modifications and improvements fall within the scope of protection of this application. The various aspects and embodiments disclosed in this application are for illustrative purposes only and are not intended to limit this application. The actual scope of protection of this application is determined by the claims.

Claims

1. An anti-reverse insertion mating structure, characterized by, include: The male end (10) and the female end (20) are inserted and axially fixed by a symmetrically arranged elastic interlocking mechanism (30). The male end (10) and the female end (20) have at least one set of first air passage (12) and second air passage (28) that are interconnected after insertion. The anti-misinsertion guide structure (11) is asymmetrically arranged on the outer wall of the male end (10) and matches the limiting structure (21) at the female end (20). The mating end face of the male end (10) and the female end (20) is provided with a sealing system (26), and the sealing system (26) has a built-in elastic sealing element (27).

2. The anti-reverse insertion mating plug of claim 1, wherein: The female end (20) is provided with a multi-functional mounting base at the outer shell, the multi-functional mounting base including an elastic engagement unit (23) and an auxiliary assembly unit (24).

3. The anti-insertion opposite plug structure according to claim 2, wherein: The elastic locking unit (23) includes a deformable part (231) and a locking part (232). The deformable part (231) is located at the input end of the locking part (232). The diameter of the deformable part (231) is smaller than the diameter of the locking part (232). When the trachea passes through the deformable part (231), due to its narrow shape, the trachea deforms and locks into the locking part (232). After reaching the locking part (232), it returns to its original state. The elastic locking unit (23) is used to organize and fix the trachea except for the male end (10) and the female end (20) to prevent it from interfering with the trachea except for the male end (10) and the female end (20).

4. The anti-polarization mating connector of claim 3, wherein: The deformable part (231) is a symmetrically arranged lip structure with the opening facing upward.

5. The anti-insertion opposite plug structure according to claim 2, wherein: The auxiliary assembly unit (24) is a snap-fit ​​structure or a threaded fastening unit, which fixes the female end (20) to the vehicle frame or surrounding parts.

6. The anti-polarization plug of claim 1, wherein: The anti-misinsertion guide structure (11) includes at least one protrusion, and the limiting structure (21) includes at least one recess, wherein the protrusion and the recess are matched and engaged.

7. The anti-polarization plug of claim 1, wherein: The sealing system (26) includes at least two levels of sealing grooves with decreasing depths, the depth ratio being 1.5-3:

1.

8. The anti-polarization plug of claim 1, wherein: Both the male end (10) and the female end (20) are provided with a pipe crimping part (25) with an anti-slip structure. The pipe crimping part (25) of the male end (10) is located on the outer wall of the reverse end of the first air passage (12) of the male end (10) and the female end (20) insertion part. The pipe crimping part (25) of the female end (20) is located on the outer wall of the reverse end of the second air passage (28) of the male end (10) and the female end (20) insertion part.

9. The anti-polarization plug configuration of claim 1, wherein: The plug-in female end (20) has a built-in muffler positioning structure, which consists of at least two muffler positioning ribs (221). The muffler positioning ribs (221) are circumferentially spaced on the inner wall of the plug-in female end (20) for engaging the muffler.

10. The anti-polarization plug of claim 9, wherein: The muffler positioning rib (221) includes an axial guide portion (222) and a radial anti-detachment portion (223). The guide portion (222) and the anti-detachment portion (223) are integrally formed. The guide portion (222) is located near the insertion point of the male end (10) and the female end (20).

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