A quick plug-in dual-lock connector

Abstract

The utility model relates to connector technical field especially relates to a quick -plug formula double -lock connector, including inner casing, outer sleeve body, elastic lock sleeve and locking assembly, the inner peripheral wall of elastic lock sleeve and the peripheral wall of inner casing form the locking cavity that happens radial expansion under the compression of connected piece to supply its and limit it inside, locking assembly includes the primary locking mechanism for the axial position of inner casing and outer sleeve body preliminary locking and the secondary locking mechanism for the axial and circumferential position of inner casing and outer sleeve body complete locking, the utility model utilizes elastic lock sleeve and inner casing form the locking cavity that can happen radial expansion or shrinkage to supply connected piece to enter and preliminary location, to realize the quick -plug connection of connector, and utilize primary locking mechanism to lock the axial position of outer sleeve body preliminary, utilize secondary locking mechanism to lock the axial position and circumferential position of outer sleeve body double locking simultaneously, can avoid outer sleeve body floating, improve the connection strength.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to a quick-connect double-locking connector. Background Technology

[0002] When connectors are plugged in, electrical connection is usually achieved by the mating of a male plug and a female socket. In order to prevent the two from accidentally disengaging, a locking structure is usually set to lock the male plug and the female socket. In the prior art, the locking structure generally includes a locking pin and a slide groove for the locking pin to slide. The slide groove is roughly L-shaped and includes an unlocking groove extending axially and a locking groove extending circumferentially.

[0003] In actual use, the connector is usually covered by a waterproof sleeve. Even when it is in the locked state, the locking pin and the locking groove located in the circumferentially extending locking groove can still move relative to each other in the circumferential direction. This makes it difficult for the connector inside the waterproof sleeve to distinguish whether it is locked. In addition, there will be errors in judging whether the locking is in place during the actual installation and rotation process. Utility Model Content

[0004] The technical problem to be solved by this utility model is: In order to solve the problem that in the prior art, the connector is usually covered by a waterproof sleeve, and even when it is in the locked state, the locking pin and the locking groove located in the circumferentially extending locking groove can still move relative to each other in the circumferential direction, which makes it difficult to distinguish whether the connector inside the waterproof sleeve is locked, and there will also be errors in judging whether the locking is in place during the actual installation and rotation process. A quick-connect double-locking connector is provided.

[0005] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a quick-connect double-locking connector, comprising: Inner shell; The outer shell is fitted over the inner shell and can move along the circumference and axial direction of the inner shell; An elastic locking sleeve is defined between the inner housing and the outer housing, and a locking cavity is formed between the inner peripheral wall of the elastic locking sleeve and the outer peripheral wall of the inner housing, which expands radially under the pressure of the connecting member to allow it to enter and confine it inside. The locking assembly is used to lock the inner housing and the outer housing relative to each other so that the outer housing continuously presses against the elastic locking sleeve to lock the connected member. It includes a primary locking mechanism for initially locking the axial position of the inner housing and the outer housing and a secondary locking mechanism for fully locking the axial and circumferential positions of the inner housing and the outer housing.

[0006] Furthermore, the primary locking mechanism includes a limiting pin respectively disposed on the outer shell and the inner shell, and a sliding groove for sliding the limiting pin. The sliding groove includes an unlocking groove extending axially and a primary locking groove communicating with the unlocking groove and extending circumferentially.

[0007] Furthermore, the secondary locking mechanism includes a locking pin elastically disposed on the inner housing and a secondary locking groove that penetrates the outer housing radially for the locking pin to engage.

[0008] Furthermore, the elastic locking sleeve protrudes towards the inner housing to form an elastic protruding ring for being opened by the connected component during insertion into the locking cavity to allow it to pass through, and for being pressed by the outer housing during axial movement of the outer housing to lock the connected component in the locking cavity.

[0009] Furthermore, one end of the elastic locking sleeve is fixed to the inner shell as a fixed end, and the other end is a suspended end. The suspended end is provided with a plurality of elastic deformation grooves along its circumference, and each elastic deformation groove passes through the suspended end axially to form the aforementioned elastic convex ring.

[0010] Furthermore, the outer sleeve protrudes towards the elastic locking sleeve to form a pressure-applying portion for applying pressure to the elastic locking sleeve, and the elastic locking sleeve has a limiting step on the side near the outer sleeve for axially limiting the pressure-applying portion.

[0011] Furthermore, the outer sleeve end is bent inward to form a limiting cavity for the insertion of the elastic locking sleeve end to limit its elastic deformation.

[0012] Furthermore, a first elastic element is provided between the inner shell and the outer shell to push the outer shell to the locking position.

[0013] Furthermore, the inner housing is provided with an installation groove for installing the locking pin, and a second elastic element is provided between the locking pin and the bottom of the installation groove.

[0014] Furthermore, a limiting block is embedded in the mounting groove, and the limiting block has a limiting groove for communicating with the mounting groove. An abutment step is formed in the limiting groove for limiting the locking pin in the mounting groove.

[0015] The beneficial effects of this utility model are as follows: This utility model utilizes an elastic locking sleeve and an inner shell to form a locking cavity that can expand or contract radially to allow the connected parts to enter and be initially limited, so as to realize the quick-connection of the connector. Furthermore, the primary locking mechanism initially locks the axial position of the outer shell, while the secondary locking mechanism doubles the axial and circumferential positions of the outer shell, which can prevent the outer shell from floating and improve the connection strength. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a three-dimensional schematic diagram of the present invention from a first-person perspective; Figure 2 This is a three-dimensional schematic diagram of the present invention from a second perspective; Figure 3 This is a cross-sectional view of the present invention; Figure 4 yes Figure 3 A magnified view of part A (at this time, the pressure-applying part applies pressure to the elastic locking sleeve); Figure 5 This is an exploded view of this utility model; Figure 6 This is a three-dimensional schematic diagram of the elastic locking sleeve; In the picture: 1. Inner shell; 101. Mounting slot; 2. Outer body; 201. Pressure application part; 202. Limiting cavity; 3. Elastic locking sleeve; 301. Elastic convex ring; 302. Elastic deformation groove; 303. Limiting step; 4. Primary locking mechanism; 401. Limit pin; 402. Slide groove; 4021. Unlocking groove; 4022. Primary locking groove; 5. Secondary locking mechanism; 501. Locking pin; 502. Secondary locking groove; 503. Secondary elastic element; 504. Limiting block; 505. Limiting groove; 5051. Abutment step; 6. First elastic element; 7. Insert pin; 8. Insulating components; 9. Sealing components. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention. Therefore, they only show the components, orientations, and references (e.g., up, down, left, right, etc.) relevant to the present invention and are intended only to aid in the description of the features in the drawings. Therefore, the following specific embodiments are not intended to be restrictive, and the scope of the claimed subject matter is defined solely by the appended claims and their equivalents.

[0019] like Figure 1-6 As shown, a quick-connect dual-locking connector includes; The inner housing 1 has a pin 7 inserted inside it. The pin 7 contacts the connected component to achieve an electrical connection. An insulating element 8 is provided between the pin 7 and the inner housing. A sealing element 9 is provided between the outer peripheral wall of the insulating element 8 and the inner peripheral wall of the inner housing 1. The sealing element 9 can be, but is not limited to, an O-ring.

[0020] Outer body 2, which is fitted outside the inner shell 1, and can move along the circumference and axial direction of the inner shell 1; The elastic locking sleeve 3 is defined between the inner housing 1 and the outer housing 2. A locking cavity is formed between the inner peripheral wall of the elastic locking sleeve 3 and the outer peripheral wall of the inner housing 1. Under the pressure of the connected member, it expands radially to allow the connected member to enter and be confined inside. One end of the locking cavity is open to form an open end. After the connected member enters the locking cavity from the open end, it is locked inside and contacts the pin 7 to achieve an electrical connection. And a locking assembly for locking the inner housing 1 and the outer housing 2 relative to each other so that the outer housing 2 continuously presses the elastic locking sleeve 3 to lock the connected member. The outer housing 2 located in the elastic locking sleeve 3 applies pressure to it to cause the locking cavity to contract radially to lock the connected member located inside it. The locking assembly includes a primary locking mechanism 4 for initially locking the inner housing 1 and the outer housing 2 in the axial direction, and a secondary locking mechanism 5 for completely locking the inner housing 1 and the outer housing 2 in the axial and circumferential directions. This application utilizes the elastic locking sleeve 3 and the inner housing 1 to form a locking cavity that can expand or contract radially to allow the connected parts to enter and be initially limited, so as to realize the quick-connect connection of the connector. Furthermore, the primary locking mechanism 4 is used to lock the axial position of the outer housing 2, while the secondary locking mechanism 5 is used to double lock the axial and circumferential positions of the outer housing 2, which can prevent the outer housing 2 from floating and improve the connection strength.

[0021] In some examples, the primary locking mechanism 4 includes a limiting pin 401 respectively disposed on the outer shell 2 and the inner shell 1, and a sliding groove 402 for sliding the limiting pin 401. The sliding groove 402 includes an unlocking groove 4021 extending axially and a primary locking groove 4022 communicating with the unlocking groove 4021 and extending circumferentially. In this embodiment, the sliding groove 402 is located on the outer shell 2 and penetrates the outer shell 2 radially. The limiting pin 401 is located on the inner shell 1 and extends into the sliding groove 402. The limiting pin 401 can enter the communicating part between the unlocking groove 4021 and the primary locking groove 4022 from the unlocking groove 4021 during the axial movement of the outer shell 2. At this time, the outer shell 2 is unlocked from the inner shell 1, and the outer shell 2 can move axially to release the pressure on the elastic locking sleeve 3. During the circumferential movement of the outer shell 2, it enters the primary locking groove 4022. At this time, the axial position of the outer shell 2 and the inner shell 1 is initially fixed.

[0022] In some examples, the secondary locking mechanism 5 includes a locking pin 501 elastically disposed on the inner housing 1 and a secondary locking groove 502 that penetrates the outer housing 2 radially for the locking pin 501 to engage with. The locking pin 501 and the secondary locking groove 502 are sized to match. Preferably, the end of the locking pin 501 facing away from the inner housing 1 has a ball head structure, which facilitates its entry into or exit from the secondary locking groove 502.

[0023] When the limiting pin 401 of the primary locking mechanism 4 enters the primary locking groove 4022 and abuts against the groove wall of the primary locking groove 4022, the locking pin 501 is aligned with the secondary locking groove 502 and enters the secondary locking groove 502 to lock the outer shell 2 and the inner shell 1 in both the axial and circumferential directions. Preferably, the primary locking mechanism 4 and the secondary locking mechanism 5 are arranged opposite to each other to improve the locking effect.

[0024] In some examples, the elastic locking sleeve 3 protrudes towards the inner housing 1 to form an elastic protruding ring 301 for being opened by the connected member during insertion into the locking cavity to allow it to pass through, and for being pressed by the outer housing 2 during axial movement of the outer housing 2 to lock the connected member in the locking cavity. The elastic protruding ring 301 has a guide slope located near the opening end of the locking cavity and a locking surface connected to the guide slope. During the process of the connected member entering the locking cavity, it first contacts the guide slope and gradually enters the locking cavity under its guidance until it abuts against the locking surface and is confined in the locking cavity.

[0025] In some examples, one end of the elastic locking sleeve 3 is fixed to the inner shell 1 as a fixed end, and the other end is a suspended end. The suspended end is provided with a plurality of spaced elastic deformation grooves 302 along its circumference. Each elastic deformation groove 302 passes through the suspended end axially to form the above-mentioned elastic convex ring 301. The elastic deformation grooves 302 can realize the radial expansion and contraction of the elastic convex ring 301.

[0026] In some examples, the outer sleeve 2 protrudes towards the elastic locking sleeve 3 to form a pressure-applying part 201 for applying pressure to the elastic locking sleeve 3. The elastic locking sleeve 3 has a limiting step 303 on the side near the outer sleeve 2 for axially limiting the pressure-applying part 201. When the pressure-applying part 201 moves axially to contact the elastic locking sleeve 3, it forces the elastic locking sleeve 3 to lock the connected member located in the locking cavity. When the pressure-applying part 201 abuts against the limiting step 303, the outer sleeve 2 stops moving. When the pressure-applying part 201 moves axially to disengage from the elastic locking sleeve 3, it releases the pressure on the elastic locking sleeve 3, and the connected member located in the locking cavity can open the elastic protrusion 301 to disengage from the locking cavity.

[0027] In some examples, the outer sleeve 2 is bent inward at one end to form a limiting cavity 202 for the insertion of the end of the elastic locking sleeve 3 to limit its elastic deformation. The outer cavity wall of the limiting cavity 202 is used to limit the degree of freedom of the elastic locking sleeve 3 to expand outward, and the inner cavity wall of the limiting cavity 202 is used to limit the degree of freedom of the elastic locking sleeve 3 to contract inward.

[0028] In some examples, a first elastic element 6 is provided between the inner shell 1 and the outer shell 2 to push the outer shell 2 to the locking position; when unlocking, the outer shell 2 is rotated circumferentially so that the limiting pin 401 enters the communication part between the primary locking groove 4022 and the unlocking groove 4021 from the primary locking groove 4022, and then the outer shell 2 moves axially against the elastic force of the first elastic element 6, and the limiting pin 401 enters the unlocking groove 4021. At this time, the outer shell 2 releases the pressure on the elastic locking sleeve 3; when locking, the outer shell 2 is released, the first elastic element 6 resets and drives the outer shell 2 to axially reset to apply pressure to the elastic locking sleeve 3, and then the outer shell 2 is rotated circumferentially so that the limiting pin 401 enters the primary locking groove 4022 to fix the axial position of the outer shell 2.

[0029] The first elastic element 6 can be a spring. The outer peripheral wall of the inner shell 1 protrudes to form a rear step. A front step is formed between the pressure part 201 and the inner peripheral wall of the outer shell 2. One end of the first elastic element 6 abuts against the front step, and the other end abuts against the rear step.

[0030] In some examples, the inner housing 1 has an installation groove 101 for mounting the locking pin 501. A second elastic element 503 is provided between the locking pin 501 and the bottom of the installation groove 101. The second elastic element 503 can be a spring. When the locking groove is rotated to face the locking pin 501, the locking pin 501 enters the secondary locking groove 502 from the installation groove 101 under the elastic force of the second elastic element 503 to lock the outer shell 2 and the inner housing 1. It can be completely locked and will not float. When the locking pin 501 is pressed, the second elastic element 503 is compressed, and the locking pin 501 retracts from the locking groove into the installation groove 101. At this time, it is in the unlocked state.

[0031] In some examples, a limiting block 504 is embedded in the mounting groove 101, and the outer sleeve 2 on the outside always limits the limiting block 504 within the mounting groove 101. The limiting block 504 has a limiting groove 505 for communicating with the mounting groove 101. The limiting groove 505 is smaller at the top and larger at the bottom to form an abutment step 5051 for limiting the locking pin 501 within the mounting groove 101, thereby preventing the locking pin 501 from coming out of the mounting groove 101.

[0032] Working principle: During operation, the connected component is first inserted into the locking cavity. As the connected component enters the cavity, it first contacts the guide slope of the elastic protrusion ring 301, which expands the elastic protrusion ring 301 and causes the locking cavity to expand radially. After the connected component passes the elastic protrusion ring 301, the locking cavity returns to its radial position to initially limit the connected component. At the same time, the outer sleeve 2 is pressed against the outside of the elastic lock sleeve 3 by the first elastic element 6 to apply pressure to the elastic lock sleeve 3. Then, the outer sleeve 2 is rotated circumferentially, and the limiting pin 401 enters the primary locking groove 4022 to initially lock the axial position of the outer sleeve 2. At the same time, the locking pin 501 enters the secondary locking groove 502 under the elastic force of the second elastic element 503 to double lock the axial and circumferential positions of the outer sleeve 2. At this time, the pressure part 201 forces the elastic lock sleeve 3 to always press the connected component in the locking cavity, and the connected component cannot open the elastic lock sleeve 3 to disengage from the locking cavity. When separating, first press the locking pin 501, compress the second elastic element 503, and the locking pin 501 retracts from the secondary locking groove 502 into the mounting groove 101. At the same time, rotate the outer sleeve 2 circumferentially so that the limiting pin 401 enters the communication part between the primary locking groove 4022 and the unlocking groove 4021 from the primary locking groove 4022. Then, overcome the elastic force of the first elastic element 6 and move the outer sleeve 2 axially. The limiting pin 401 enters the unlocking groove 4021. At this time, the outer sleeve 2 releases the pressure on the elastic locking sleeve 3. Then, it applies a pulling force to the connected parts, which opens the elastic protrusion ring 301, and the locking cavity expands radially to allow it to exit.

[0033] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A quick-plug, dual-lock connector, characterized by: include: Inner shell (1); Outer shell (2), which is fitted outside the inner shell (1) and can move along the circumference and axial direction of the inner shell (1); An elastic locking sleeve (3) is defined between the inner housing (1) and the outer housing (2), and a locking cavity is formed between the inner peripheral wall of the elastic locking sleeve (3) and the outer peripheral wall of the inner housing (1) to expand radially under the pressure of the connecting member so as to allow it to enter and be defined inside. The locking assembly is used to lock the inner housing (1) and the outer housing (2) relative to each other so that the outer housing (2) continuously presses the elastic locking sleeve (3) to lock the connected parts. It includes a primary locking mechanism (4) for initially locking the axial position of the inner housing (1) and the outer housing (2) and a secondary locking mechanism (5) for fully locking the axial and circumferential positions of the inner housing (1) and the outer housing (2).

2. The quick-connect dual-locking connector according to claim 1, characterized in that: The primary locking mechanism (4) includes a limiting pin (401) respectively disposed on the outer shell (2) and the inner shell (1) and a sliding groove (402) for sliding the limiting pin (401). The sliding groove (402) includes an unlocking groove (4021) extending axially and a primary locking groove (4022) communicating with the unlocking groove (4021) and extending circumferentially.

3. The quick-connect dual-locking connector according to claim 1, characterized in that: The secondary locking mechanism (5) includes a locking pin (501) elastically disposed on the inner housing (1) and a secondary locking groove (502) that penetrates the outer housing (2) radially for the locking pin (501) to engage.

4. A quick-connect dual-locking connector according to claim 1, characterized in that: The elastic locking sleeve (3) protrudes towards the inner housing (1) and forms an elastic protrusion ring (301) for being opened by the connected member during the insertion of the connected member into the locking cavity so that it can pass through, and for being pressed by the outer housing (2) during the axial movement of the outer housing (2) to lock the connected member in the locking cavity.

5. A quick-connect dual-locking connector according to claim 4, characterized in that: One end of the elastic locking sleeve (3) is fixed to the inner shell (1) as a fixed end, and the other end is a suspended end. The suspended end is provided with a plurality of elastic deformation grooves (302) along its circumference. Each elastic deformation groove (302) passes through the suspended end along the axial direction to form the above-mentioned elastic protrusion ring (301).

6. A quick-connect dual-locking connector according to claim 1, characterized in that: The outer sleeve (2) protrudes towards the elastic locking sleeve (3) and forms a pressure-applying part (201) for applying pressure to the elastic locking sleeve (3). The elastic locking sleeve (3) has a limiting step (303) on the side near the outer sleeve (2) for axially limiting the pressure-applying part (201).

7. A quick-connect dual-locking connector according to claim 1, characterized in that: The outer sleeve (2) is bent inward at one end to form a limiting cavity (202) for the insertion of the end of the elastic locking sleeve (3) to limit its elastic deformation.

8. A quick-connect dual-locking connector according to claim 1, characterized in that: A first elastic element (6) is provided between the inner shell (1) and the outer shell (2) for pushing the outer shell (2) to the locking position.

9. A quick-connect dual-locking connector according to claim 3, characterized in that: The inner shell (1) has an installation groove (101) for installing the locking pin (501), and a second elastic element (503) is provided between the locking pin (501) and the bottom of the installation groove (101).

10. A quick-connect dual-locking connector according to claim 9, characterized in that: The mounting groove (101) is embedded with a limiting block (504), and the limiting block (504) has a limiting groove (505) for communicating with the mounting groove (101). The limiting groove (505) has an abutment step (5051) for limiting the locking pin (501) within the mounting groove (101).

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