Self-locking structure of a connector

Abstract

The application discloses a self-locking structure of a connector, which comprises a shell, a straight pipe and a buckle, the shell and the straight pipe are axially inserted into one body, an elastic piece is arranged between the straight pipe and the shell and connected with the shell, a convex part is arranged on the elastic piece, a first recess is arranged on the straight pipe corresponding to the convex part, the convex part can be clamped into the first recess, a boss is arranged on the outer side of the straight pipe and the inner side of the shell respectively, the straight pipe is limited in the shell through the buckle and the boss. Compared with the traditional self-locking structure, the structure of the application does not excessively increase the weight of the product when being installed in the connector, the structure of the application has good environmental resistance compared with the traditional plastic, and can be better used on the lightweight equipment in a severe environment.

Description

Technical Field

[0001] This invention relates to the field of connectors, and more specifically to a self-locking structure for a connector. Background Technology

[0002] Common locking structures typically employ elastic locking or snap-locking methods. Connectors used in high-vibration environments are prone to separation and detachment from their mating parts during operation. A connector's self-locking structure ensures a secure and stable connection after mating with the mating parts, preventing loosening or detachment due to external factors.

[0003] Currently, there is no structure in the connector field that can lock the connector in a high-vibration environment. Summary of the Invention

[0004] The purpose of this invention is to design a self-locking structure that utilizes the interlocking of a spring sheet and a groove to ensure that the spring sheet protrusion engages with the straight tube groove at any time, thereby locking the position of the connecting sleeve.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A self-locking structure for a connector includes a housing, a straight tube, and a snap-fit ​​component that are axially fitted together. An elastic element connected to the housing is provided between the straight pipe and the housing. The elastic element has a protrusion, and the straight pipe corresponding to the protrusion has a first groove. The protrusion can be inserted into the first groove.

[0006] In the above technical solution, a second groove is provided on the inner side of the housing, and the elastic element is disposed in the second groove and connected to the housing.

[0007] In the above technical solution, the elastic element includes two spring sheets, the center of symmetry of the two spring sheets is connected to the housing, and each of the two spring sheets is provided with a protrusion.

[0008] In the above technical solution, the straight pipe fitting is provided with at least two first grooves, and the two protrusions can be simultaneously embedded into the first grooves.

[0009] In the above technical solution, a number of first grooves are provided on the straight pipe along the same circumference, and the protrusion can be embedded into each of the first grooves.

[0010] In the above technical solution, a third groove is provided on the straight pipe fitting, and a boss is provided on the inner side of the housing corresponding to the third groove. One end of the fastener is provided in the third groove, and the other end of the fastener is limited by the boss.

[0011] In the above technical solution, the third groove is arranged around the straight pipe, the fastener is a clamp structure, the inner ring of the clamp is fitted inside the third groove, and the inner ring diameter of the clamp is smaller than the outer diameter of the straight pipe, and the outer ring diameter of the clamp is smaller than the inner diameter of the boss.

[0012] In the above technical solution, the housing is provided with a mounting hole for connecting the elastic element. The mounting hole has a chamfer of 75° and the chamfer depth is half the thickness of the housing wall.

[0013] In the above technical solution, the outer side of the straight pipe fitting and the inner side of the shell are respectively provided with mutually limiting bosses, and the straight pipe fitting is restricted in the shell by the fasteners and the bosses.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: The spring and corresponding connecting parts in this invention are all made of corrosion-resistant, high-temperature resistant, high-strength and high-toughness stainless steel by stamping. They have good mechanical properties and can withstand a load of 220 (+22 0) N after forming the connecting sleeve assembly. They do not have obvious displacement or loosening under strong vibration and impact environment (aircraft engine) and will not disintegrate or fall off with the inter-parts. Compared with traditional self-locking structures, the structure of this invention does not significantly increase the weight of the product when installed inside the connector. Compared with traditional plastics, the structure of this invention has excellent environmental resistance and can be better used in lightweight equipment operating in harsh environments. Attached Figure Description

[0015] The present invention will be described by way of example and with reference to the accompanying drawings, wherein: Figure 1 This is an exploded view of a self-locking structure; Figure 2 This is a schematic diagram of the shell structure; Figure 3 This is a structural schematic diagram of a straight pipe fitting; Figure 4 This is a structural schematic diagram of the elastic element; Figure 5 This is a cross-sectional schematic diagram of the self-locking structure; Wherein: 1 is a straight pipe fitting, 1-1 is the first groove, 1-2 is the third groove, 1-3 is the contact surface, 2 is the shell, 2-1 is the second groove, 2-2 is the boss, 2-3 is the mounting hole, 3 is the clamp, 4 is the elastic element, 4-1 is the mounting hole, 4-2 is the protrusion, 5 is the rivet, 6 is the cavity, and 7 is the limiting step. Detailed Implementation

[0016] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0017] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0018] like Figure 1 As shown, the self-locking structure of this embodiment includes four parts: a straight pipe 1, a housing 2, a clamp 3, and an elastic element 4, which are assembled by interlocking with each other.

[0019] like Figure 2 As shown, the housing 2 is manufactured from metal (aluminum, stainless steel) and non-metallic materials through machining or molding, and has a cavity 6 that extends through both ends. Within the cavity, a second groove 2-1 is provided circumferentially along the inner wall. This groove serves to permanently house the elastic element 4. The width of the second groove 2-1 is greater than the width of the elastic element 4 to facilitate its installation and removal. A mounting hole 2-3 is provided within the second groove 2-1 for fixing the elastic element 4. According to the process design requirements, the mounting hole 2-3 needs to be chamfered at 75°, and the chamfer depth needs to be half the wall thickness of the housing 2. This design aims to ensure that the rivet 5 will not crack under a load of 222 (+22 0) N during the connection of the elastic element 4. A ring of bosses 2-2 is also provided on the inner wall of the housing 2, which is used for limiting the clamp 3.

[0020] like Figure 3 As shown, the straight pipe fitting 1 is made of metal and can be manufactured by machining or molding. Several first grooves 1-3 are provided along the circumference of the straight pipe fitting 1 on the contact surface 1-3. These first grooves 1-3 engage with the protrusions 4-2 on the elastic member 4. All the first grooves 1-3 and the contact surface 1-3 are toothed. The diameter and length of each first groove 1-3 are greater than the protrusion 4-2, allowing the protrusion 4-2 to slide smoothly in different first grooves 1-3, ensuring that the protrusion 4-2 can fall into the first groove 1-3 at any angle.

[0021] On one side of the first groove 1-3, a third groove 1-2 is provided along the circumference of the straight pipe 1. This groove is used to set the clamp 3, which serves to limit the mutual positioning of the straight pipe 1 and the shell 2.

[0022] like Figure 4As shown, the elastic element 4 is made of two integrally formed spring sheets by stamping. A protrusion 4-2 is provided on the inner side of each spring sheet, and a mounting hole 4-1 is provided at the symmetrical center of the two spring sheets. The elastic element 4 is installed on the housing 2 by rivets 5.

[0023] In this embodiment, the clamp 3 is a layered structure. Its inner diameter is designed to be smaller than the outer diameter of the straight pipe 1. The outer diameter of the clamp 3 is smaller than the inner diameter of the shell 2. The clamp 3 is used to connect to the straight pipe 1 and to cooperate with the boss 2-2 on the shell to position the straight pipe 1.

[0024] In this embodiment, the straight pipe 1 and the housing 2 are respectively provided with mutually limiting steps 7. The two are limited by the limiting steps 7, and the clamp 3 is used to limit the straight pipe 1 axially within the housing, restricting the straight pipe 1 between the clamp 3 and the limiting steps 7. The first groove 1-3 and the protrusion 4-2 provide radial limitation. By limiting both axially and radially, the straight pipe 1 is prevented from rotating and falling out within the housing 2.

[0025] The assembly relationship of the structure in this embodiment is as follows: First, install rivet 5 on the through hole of elastic element 4, and connect rivet 5 and elastic element 4 together to the mounting hole 2-3 of the second groove 2-1, and connect elastic element 4 and housing 2 into one piece by riveting. Next, the straight tube 1 is passed through the cavity 6 and installed into the housing 2, so that the straight tube 1 contacts the limiting step 7 in the housing 2, and the first groove 1-1 on the straight tube 1 engages with the protrusion 4-2 on the elastic member 4. Finally, using a special tool, the inner ring of the clamp 3 is fitted into the third groove 1-2 of the straight pipe 1, and then the straight pipe 1 is pushed so that the outer ring of the clamp 3 contacts the boss 2-2 inside the housing 2; so that the straight pipe 1 is always restricted between the limiting step 7 and the boss 2-2 of the housing 1 by the clamp 3, thus completing the assembly of the entire locking mechanism.

[0026] This invention is not limited to the specific embodiments described above. The invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.

Claims

1. A self-locking structure for a connector, comprising a housing, a straight tube, and a snap-fit ​​component axially inserted into each other, characterized in that: An elastic element connected to the housing is provided between the straight pipe and the housing. The elastic element has a protrusion, and the straight pipe corresponding to the protrusion has a first groove. The protrusion can be inserted into the first groove.

2. The self-locking structure of a connector according to claim 1, characterized in that: The inner side of the housing is provided with a second groove, and the elastic element is disposed in the second groove and connected to the housing.

3. The self-locking structure of a connector according to claim 2, characterized in that: The elastic element includes two spring pieces, the center of symmetry of the two spring pieces is connected to the housing, and each of the two spring pieces is provided with a protrusion.

4. The self-locking structure of a connector according to claim 2, characterized in that: The straight pipe fitting has at least two first grooves, and the two protrusions can be simultaneously inserted into the first grooves.

5. The self-locking structure of a connector according to claim 1 or 4, characterized in that: The straight pipe fitting has several first grooves along the same circumference, and the protrusion can be embedded into each first groove.

6. The self-locking structure of a connector according to claim 1, characterized in that: The straight pipe is provided with a third groove, and a boss is provided on the inner side of the housing corresponding to the third groove. One end of the fastener is provided in the third groove, and the other end of the fastener is in limiting contact with the boss.

7. The self-locking structure of a connector according to claim 7, characterized in that: The third groove is arranged around the straight pipe, and the fastener is a clamp structure. The inner ring of the clamp is fitted inside the third groove, and the inner diameter of the clamp is smaller than the outer diameter of the straight pipe, while the outer diameter of the clamp is smaller than the inner diameter of the boss.

8. The self-locking structure of a connector according to claim 1, characterized in that: The housing is provided with mounting holes for connecting elastic elements. The mounting holes are chamfered at 75° and the chamfer depth is half the thickness of the housing wall.

9. The self-locking structure of a connector according to claim 1, characterized in that: The outer side of the straight pipe fitting and the inner side of the housing are respectively provided with mutually limiting bosses, and the straight pipe fitting is restricted in the housing by the fasteners and the bosses.

Images