Self-sealing joint connecting structure capable of identifying butt joint in place
The multi-line trapezoidal thread connection structure solves the problem that the high-pressure quick self-sealing joint cannot identify the docking position, and realizes the reliable connection and quick docking position identification of the self-sealing joint.
Patent Information
- Application Number
- CN202422673460.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-01
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-11-01
AI Technical Summary
Existing high-pressure quick self-sealing connectors cannot identify whether they are properly connected, and there is a risk of loose connection and oil leakage.
A multi-thread trapezoidal thread connection structure is adopted, and the locking part is designed with no more than 4 locking teeth. The starting end position, lead, locking tooth position and size of the trapezoidal thread are matched in design. The locking teeth engage only when the connection is in place, and the locking position can be visually checked.
The self-sealing joint has a docking recognition function, which ensures high strength and fast connection and reduces the risk of oil leakage.
Smart Images
Figure CN223318642U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of self-sealing joints of aviation hydraulic systems, and particularly relates to a self-sealing joint connection structure with the function of identifying when a joint is in place. Background Art
[0002] High-pressure quick self-sealing connectors are used to quickly connect high-pressure pipelines. To ensure the connection strength, the two halves of the self-sealing connector are usually connected by threads. Currently, self-sealing connectors with threaded connection structures rely on feel for docking and use ratchet locking. This ratchet locking structure does not have the function of judging whether the connection is in place, and there is a risk of loose connection and oil leakage. Utility Model Content
[0003] The purpose of the utility model is to provide a self-sealing joint connection structure with the function of identifying whether the joint is in place. The utility model solves the problem that the existing high-pressure quick self-sealing joint cannot identify whether the joint is in place.
[0004] The technical solution of the utility model is: a self-sealing joint connection structure with the function of identifying when the joint is in place, comprising a fixed end connection structure and a quick-release end connection structure; wherein the fixed end connection structure comprises a joint, which is provided with a joint disk, a trapezoidal thread section and a sealing step in sequence along the axial direction, and the inner end surface of the joint disk is provided with locking teeth; the quick-release end connection structure comprises an outer sleeve, a screw sleeve and a sealing sleeve; a locking groove is provided on the end surface of the head end of the outer sleeve, and a spring cavity is provided at the tail end of the outer sleeve; the outer sleeve is slidably connected with the screw sleeve; the tail end of the screw sleeve is buckled with the head end of the sealing sleeve, and the tail end of the sealing sleeve passes through the spring cavity; a spring is provided in the spring cavity; when the joint is in place, the sealing step extends into the sealing sleeve, and the trapezoidal thread section is threadedly connected with the screw sleeve; when the joint is in place, the locking teeth are aligned and snapped into the locking groove.
[0005] In the aforementioned self-sealing joint connection structure with the function of identifying docking in place, a limiting component is provided on the outer sleeve body; a limiting ring groove is provided on the outer circular surface of the tail end of the screw sleeve for limiting the axial displacement of the limiting component.
[0006] In the aforementioned self-sealing joint connection structure with the function of identifying and docking in place, the trapezoidal thread segment and the starting end of the trapezoidal thread on the inner wall of the screw sleeve are both complete thread shapes without the thread tail.
[0007] In the aforementioned self-sealing joint connection structure with the function of identifying docking in place, a stop sleeve is provided on the outer circle of the tail end of the sealing sleeve, and the stop sleeve is slidably connected to the inner side wall of the spring cavity of the outer sleeve.
[0008] In the aforementioned self-sealing joint connection structure with the function of identifying when the joint is in place, a retaining ring for stopping the retaining sleeve is further provided on the outer circle of the tail end of the sealing sleeve.
[0009] In the aforementioned self-sealing joint connection structure with the function of identifying when the joint is in place, the number of the locking teeth is no more than 4.
[0010] In the aforementioned self-sealing joint connection structure with the function of identifying when the joint is in place, the trapezoidal thread of the trapezoidal thread segment is a multi-thread thread.
[0011] The advantages of the utility model are:
[0012] The utility model adopts a multi-line trapezoidal thread to connect the two halves, and the locking part adopts no more than 4 locking teeth. The starting end position of the trapezoidal thread, the lead of the trapezoidal thread, the size of the locking teeth, and the position of the locking teeth are matched in design. The locking teeth can only be engaged when the two halves are docked in place, and the locking position can be visually observed, which has the characteristic of being able to identify whether the docking is in place.
[0013] The position of the starting end of the trapezoidal thread and the position of the locking teeth of the utility model have a relative position relationship, which ensures that the locking teeth can mesh when the two halves are docked in place and can be visually inspected.
[0014] The utility model matches the trapezoidal thread lead, the number of locking teeth and the locking tooth height to ensure that the locking teeth cannot mesh when the two halves are not properly docked. A larger tooth width is adopted to improve the strength of the locking teeth and enable visual inspection.
[0015] The utility model removes the thread tail at the starting end of the trapezoidal thread, adopts a complete tooth shape, and improves the docking position accuracy.
[0016] The spring of the utility model acts on the locking teeth to provide locking force, thereby ensuring that the locking teeth are locked reliably.
[0017] In summary, the utility model adopts multi-line trapezoidal threads to connect the two halves, and the locking part adopts no more than 4 locking teeth, which can identify whether the two halves are properly docked, and has high connection strength and fast docking. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the fixed end connection structure of the self-sealing joint of the utility model.
[0019] Figure 2 It is a schematic diagram of the connection structure of the quick-release end of the self-sealing joint of the utility model.
[0020] Figure 3 It is a schematic diagram of the connection structure of the fixed end and the quick-release end of the utility model in the docking state. DETAILED DESCRIPTION
[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, but they are not intended to limit the present invention.
[0022] Example 1. A self-sealing joint connection structure with recognition and docking in place, see Figure 1-Figure 3, including a fixed end connection structure and a quick-release end connection structure; the fixed end connection structure includes a docking joint, which is provided with a docking disc 1, a trapezoidal thread section 2 and a sealing step 3 in sequence along the axial direction, and the inner end surface of the docking disc 1 is provided with a locking tooth 4; the quick-release end connection structure includes an outer sleeve 5, a screw sleeve 6 and a sealing sleeve 7; a locking groove 8 is provided on the head end surface of the outer sleeve 5, and a spring cavity 9 is provided at the tail end of the outer sleeve 5; the outer sleeve 5 is slidingly connected with the screw sleeve 6; the tail end of the screw sleeve 6 is buckled with the head end of the sealing sleeve 7, and the tail end of the sealing sleeve 7 passes through the spring cavity 9; a spring 10 is provided in the spring cavity 9; when docking, the sealing step 3 extends into the sealing sleeve 7, and the trapezoidal thread section 2 is threadedly connected to the screw sleeve 6; when docking is in place, the locking teeth 4 are aligned and stuck in the locking groove 8.
[0023] The outer sleeve 5 is provided with a limiting component 11 ; the outer circumferential surface of the rear end of the screw sleeve 6 is provided with a limiting ring groove 12 for limiting the axial displacement of the limiting component 11 .
[0024] The trapezoidal thread segment 2 and the starting end of the trapezoidal thread on the inner wall of the screw sleeve 6 are both complete thread shapes without the thread end.
[0025] A stopper sleeve 13 is provided on the outer circumference of the tail end of the aforementioned sealing sleeve 7 , and the stopper sleeve 13 is slidably connected to the inner side wall of the spring cavity 9 of the outer sleeve 5 .
[0026] A retaining ring 14 for stopping the retaining sleeve 13 is further provided on the outer circle of the rear end of the sealing sleeve 7 .
[0027] The number of the aforementioned locking teeth 4 is no more than 4.
[0028] The trapezoidal thread of the aforementioned trapezoidal thread section 2 is a multi-thread thread.
[0029] During docking, screw the trapezoidal thread section 2 into the threaded sleeve 6 so that the sealing step 3 is inserted into the sealing sleeve 7; when the locking teeth 4 are rotated into the locking groove 8, the docking is completed; by observing whether the locking teeth are engaged, it can be judged whether the product is in a tightened state, so as to facilitate the judgment of whether the docking is in place.
[0030] To disengage, push the outer sleeve 5 backward, causing it to slide axially along the threaded sleeve 6, disengaging the locking teeth 4 from the locking grooves 8. Then, rotate the trapezoidal thread section 2 in the opposite direction to separate the fixed and quick-release connection structures. After the locking teeth 4 disengage from the locking grooves 8, the outer sleeve 5 slides axially back to its original position under the action of the spring 10.
Claims
1. A self-sealing joint connection structure with the function of identifying the docking position, characterized in that: The invention comprises a fixed end connection structure and a quick-release end connection structure; wherein the fixed end connection structure comprises a butt joint, which is provided with a butt joint disc (1), a trapezoidal thread section (2) and a sealing step (3) in sequence along the axial direction, and the inner end surface of the butt joint disc (1) is provided with a locking tooth (4); the quick-release end connection structure comprises an outer sleeve (5), a screw sleeve (6) and a sealing sleeve (7); a locking groove (8) is provided on the head end surface of the outer sleeve (5), and a spring cavity (9) is provided at the tail end of the outer sleeve (5); the outer sleeve (5) is slidably connected with the screw sleeve (6); the tail end of the screw sleeve (6) is buckled with the head end of the sealing sleeve (7), and the tail end of the sealing sleeve (7) passes through the spring cavity (9); a spring (10) is provided in the spring cavity (9); when butt jointed, the sealing step (3) extends into the sealing sleeve (7), and the trapezoidal thread section (2) is threadedly connected to the screw sleeve (6); when butt jointed, the locking tooth (4) is aligned and snapped into the locking groove (8).
2. The self-sealing joint connection structure with the function of identifying the docking position according to claim 1 is characterized in that: The outer sleeve (5) is provided with a limiting component (11) on its body; and a limiting ring groove (12) is provided on the outer circumferential surface of the rear end of the screw sleeve (6) for limiting the axial displacement of the limiting component (11).
3. The self-sealing joint connection structure with the function of identifying the docking position according to claim 1, characterized in that: The trapezoidal thread segment (2) and the starting end of the trapezoidal thread on the inner wall of the screw sleeve (6) are both complete tooth shapes with the thread tail removed.
4. The self-sealing joint connection structure with the function of identifying docking position according to claim 1, characterized in that: A stop sleeve (13) is provided on the outer circle of the tail end of the sealing sleeve (7), and the stop sleeve (13) is slidably connected to the inner side wall of the spring cavity (9) of the outer sleeve (5).
5. The self-sealing joint connection structure with the function of identifying the docking position according to claim 4 is characterized in that: A retaining ring (14) for stopping the retaining sleeve (13) is also provided on the outer circle of the rear end of the sealing sleeve (7).
6. The self-sealing joint connection structure with the function of identifying the docking position according to claim 1, characterized in that: The number of the locking teeth (4) is no more than 4.
7. The self-sealing joint connection structure with the function of identifying the docking position according to claim 1, characterized in that: The trapezoidal thread of the trapezoidal thread section (2) is a multi-thread thread.