Quick-plug type anti-loosening connector

Abstract

The utility model relates to the technical field of connectors, in particular to a quick plug type anti-loosening connector, which comprises an inner shell, an outer shell, an elastic hoop sleeve and a locking mechanism, the outer shell can move along the circumferential direction and the axial direction of the inner shell, the elastic hoop sleeve is positioned between the outer shell and the inner shell, a plug cavity is formed between the inner circumferential wall of the elastic hoop sleeve and the outer circumferential wall of the inner shell, and the locking mechanism is arranged in the plug cavity. The elastic hoop sleeve protrudes towards the direction of the inner sleeve to form a limiting convex ring which is expanded by the elastic hoop sleeve to allow the elastic hoop sleeve to cross in the process that a to-be-connected piece enters the insertion cavity, and the limiting convex ring can be pressed by the elastic hoop sleeve in the axial movement of the shell to limit the to-be-connected piece in the insertion cavity; the locking mechanism is used for locking the axial position of the shell so that the shell can continuously apply pressure to the limiting protruding ring. According to the utility model, a to-be-connected piece passes through the limiting convex ring of the elastic hoop sleeve and is primarily limited, and then the shell is used for applying pressure to the elastic hoop sleeve, so that the shell is forced to continuously apply pressure to the limiting convex ring to limit the to-be-connected piece in the insertion cavity all the time, thereby realizing the locking of the to-be-connected piece.

Description

TECHNICAL FIELD

[0001] The utility model relates to connector technical field especially relates to a quick -plug type anti -loose connector. BACKGROUND

[0002] The prior art connector mainly includes the male plug and the female socket, and the electrical connection is realized by the plug-in cooperation of the two. In the prior art, the two are connected by thread connection or quick plug connection. The thread connection can lock the male plug and the female socket, but it needs to be rotated forward for many circles when connecting and needs to be rotated backward for many circles when disassembling, which is time-consuming and low in efficiency. Although the quick plug connection is high in disassembling efficiency, the connection strength is not high, and the loosening phenomenon often occurs during use. SUMMARY

[0003] The utility model solves the technical problems that the male plug and the female socket are connected by thread connection in the prior art, which is time-consuming and low in efficiency, and the connection strength is not high when the quick plug connection is used, and the loosening phenomenon often occurs during use. A quick plug type anti-loose connector is provided.

[0004] In order to solve the above technical problems, the utility model adopts the following technical scheme: a quick plug type anti-loose connector, comprising:

[0005] The inner shell is provided with a through hole in the center, and the through hole is used for connecting the male plug and the female socket.

[0006] The outer shell is sleeved outside the inner shell and can move along the circumference and the axis of the inner shell.

[0007] The elastic hoop is located between the outer shell and the inner shell, and the inner circumferential wall of the elastic hoop and the outer circumferential wall of the inner shell form a plug-in cavity. The elastic hoop is protruded inward to form a limiting convex ring for being opened by the to-be-connected part to pass through in the process of entering the plug-in cavity, and the limiting convex ring can be pressed by the outer shell to limit the to-be-connected part in the plug-in cavity.

[0008] The locking mechanism is used for locking the axial position of the outer shell to continuously press the limiting convex ring.

[0009] Further, the elastic hoop is provided with an elastic member outside for limiting the excessive deformation of the elastic hoop in the process of inserting the to-be-connected part into the plug-in cavity.

[0010] Further, the elastic member is a C-shaped ring or a spring.

[0011] Further, the outer circumferential wall of the elastic hoop is recessed to form a containing groove for containing the elastic member, and the containing groove extends along the circumference of the elastic hoop.

[0012] Further, the locking mechanism comprises a locking pin on the outer shell and a sliding groove matched with the locking pin, the sliding groove comprises an unlocking groove extending in the axial direction and a locking groove extending in the circumferential direction, and the unlocking groove is communicated with the locking groove.

[0013] Further, the elastic sleeve comprises a fixed section fixed with the inner shell and a deformed section capable of being elastically deformed, the limiting convex ring is located on the deformed section, and the deformed section is provided with a plurality of deformed grooves extending in the axial direction and penetrating through one end of the elastic sleeve.

[0014] Further, the elastic sleeve protrudes towards the outer shell to form a compressed part, and the outer shell protrudes towards the elastic sleeve to form a pressing part for pressing the compressed part.

[0015] Further, one end of the limiting convex ring away from the fixed section is provided with a guide inclined surface for guiding the to-be-connected part.

[0016] Further, the end of the outer shell is bent inward to form a lap joint part for lap joint with the end of the elastic sleeve to limit the end of the elastic sleeve.

[0017] Further, the inner shell is internally provided with a plug pin, and an insulating part is arranged between the plug pin and the inner shell.

[0018] The utility model discloses the limiting convex ring of elastic sleeve is used for the to-be-connected part to pass through and preliminarily limits, then the elastic sleeve is pressed by the outer shell, forces the outer shell to continuously press the limiting convex ring to limit the to-be-connected part in the plug-in cavity all the time, thereby realizing the locking of the to-be-connected part. BRIEF DESCRIPTION OF DRAWINGS

[0019] The utility model is further illustrated below in connection with the drawings and examples.

[0020] Figure 1 It is the three-dimensional schematic view of the utility model;

[0021] Figure 2 It is the structure schematic view of the utility model in the locked state;

[0022] Figure 3 It is Figure 2 The local enlarged view of A part in Fig.

[0023] Figure 4 It is the structure schematic view of the utility model in the unlocked state;

[0024] Figure 5 It is Figure 4 The local enlarged view of B part in Fig.

[0025] Figure 6 It is the three-dimensional schematic view of the elastic sleeve;

[0026] Figure 7 is the exploded view of the utility model;

[0027] In the drawing:

[0028] 1, inner shell; 101, locking pin;

[0029] 2, outer shell; 201, pressure applying part; 202, lapping part; 203, sliding groove; 2031, unlocking slot; 2032, locking slot;

[0030] 3, elastic sleeve; 301, limiting convex ring; 302, accommodating groove; 303, fixed section; 304, deformation section; 3041, deformation groove; 305, pressure receiving part; 306, guide inclined surface;

[0031] 4, elastic member;

[0032] 5, pin;

[0033] 6, insulating member;

[0034] 7, sealing member. DETAILED DESCRIPTION

[0035] The utility model will be further explained in detail in combination with the drawings. These drawings are all simplified schematic diagrams, and only the basic structure of the utility model is schematically shown, so that only the structure related to the utility model is shown, and the direction and reference (such as up, down, left, right, etc.) can only be used to help the description of the features in the drawings. Therefore, the following detailed description is not in the sense of limitation, and the scope of the claimed subject matter is only defined by the appended claims and their equivalents.

[0036] As shown in Figure 1 , a quick-insertion type anti-loosening connector comprises

[0037] an inner shell 1;

[0038] an outer shell 2, which is sleeved outside the inner shell 1 and can move circumferentially and axially along the inner shell 1;

[0039] an elastic sleeve 3, which is located between the outer shell 2 and the inner shell 1, and the inner circumferential wall of the elastic sleeve 3 and the outer circumferential wall of the inner shell 1 form a plug-in cavity, one end of the plug-in cavity is open to allow the to-be-connected member to be inserted, the elastic sleeve 3 protrudes inwardly and forms a limiting convex ring 301 for being pried open by the to-be-connected member to allow it to pass through during the process of entering the plug-in cavity, and the limiting convex ring 301 can be compressed by the outer shell 2 to limit the to-be-connected member in the plug-in cavity during the axial movement of the outer shell 2;

[0040] and a locking mechanism for locking the axial position of the shell 2 to make the shell 2 continuously press the limiting convex ring 301.

[0041] First, the to-be-connected member is inserted into the insertion cavity, and when it abuts against the limiting convex ring 301, it can be expanded to be radially deformed to pass through, and then the limiting convex ring 301 is radially reset to preliminarily limit the to-be-connected member, and then the shell 2 is axially moved to a certain position, which presses the elastic sleeve 3, forces the elastic sleeve 3 to be sleeved on the to-be-connected member, and at the same time, the limiting convex ring 301 abuts against it, and at the same time, the locking mechanism locks the shell 2 at this position, so that the limiting convex ring 301 continuously limits the to-be-connected member in the insertion cavity to prevent the to-be-connected member from being separated, as shown in Figure 2 and Figure 3 When the two are separated, first, the shell 2 is axially reset, which releases the constraint on the limiting convex ring 301, and then a pulling force is applied to the connected member to expand the limiting convex ring 301 to be radially deformed to exit the insertion cavity, as shown in Figure 4 and Figure 5 .

[0042] In some examples, as shown in Figure 2 and Figure 3 , the elastic sleeve 3 is externally sleeved with an elastic member 4 for limiting excessive deformation of the elastic sleeve 3 during the process of inserting the to-be-connected member into the insertion cavity, which can expand the elastic sleeve 3 to be radially deformed during the process of inserting the to-be-connected member into the insertion cavity, and the elastic member 4 provided in the embodiment can limit the deformation degree of the elastic sleeve 3, and at the same time, it always externally sleeves the elastic sleeve 3, which can also provide a pre-tightening force for the elastic sleeve 3, thereby improving the locking force of the elastic sleeve 3 on the to-be-connected member.

[0043] In some examples, as shown in Figure 7 , the elastic member 4 is a C-shaped ring or a spring, both of which have a certain elastic deformation capacity, and the spring extends along the circumference of the elastic sleeve 3 to form a closed loop structure.

[0044] In some examples, as shown in Figure 6 , the outer peripheral wall of the elastic sleeve 3 is recessed to form an accommodation groove 302 for accommodating the elastic member 4, and at the same time, the accommodation groove 302 can axially limit the elastic member 4, avoiding displacement of the elastic member 4 when the to-be-connected member expands the elastic sleeve 3, thereby losing the sleeving effect of the elastic sleeve 3, and the accommodation groove 302 extends along the circumference of the elastic sleeve 3.

[0045] In some examples, as shown in Figure 1As shown, the locking mechanism comprises a locking pin 101 on the outer shell 2 and an elongated slot 203 on the inner shell 1, the elongated slot 203 comprises an unlocking slot 2031 extending in axial direction and a locking slot 2032 extending in circumferential direction, and the unlocking slot 2031 communicates with the locking slot 2032, in this embodiment, the locking pin 101 protrudes from the outer circumferential wall of the inner shell 1 and is integrally formed with the outer circumferential wall, the elongated slot 203 is located on the outer shell 2 and penetrates the outer shell 2 in radial direction, the locking pin 101 can move to the communication position of the locking slot 2032 and the unlocking slot 2031 during the axial displacement of the outer shell 2, and can enter the locking slot 2032 during the circumferential rotation of the outer shell 2.

[0046] In the initial state, the outer shell 2 does not press the elastic sleeve 3, the elastic sleeve 3 can be stretched by the to-be-connected member to pass through and then reset, then the outer shell 2 is axially displaced, the elastic sleeve 3 is pressed at the same time, the locking pin 101 moves from the unlocking slot 2031 to the communication position of the unlocking slot 2031 and the locking slot 2032, then the outer shell 2 is circumferentially rotated, the locking pin 101 enters the locking slot 2032, and when the locking pin 101 moves to abut against the slot wall of the locking slot 2032, a "click" sound can be heard at this time, the outer shell 2 and the inner shell 1 are axially locked; when unlocking is needed, the outer shell 2 is reversely rotated first, so that the locking pin 101 enters the communication position of the locking slot 2032 and the unlocking slot 2031 from the locking slot 2032, at this time, the outer shell 2 can be axially displaced to release the pressure on the elastic sleeve 3.

[0047] In some examples, as shown in Figure 6 As shown, the elastic sleeve 3 comprises a fixed segment 303 fixed with the inner shell 1 and a deformed segment 304 capable of being elastically deformed, the fixed segment 303 is press-fitted with the inner shell 1, the limiting convex ring 301 is located on the deformed segment 304, and a plurality of deformed slots 3041 are formed in the circumferential direction of the deformed segment 304, each deformed slot 3041 extends in the axial direction and penetrates one end of the elastic sleeve 3, and the deformed segment 304 can be elastically deformed through the deformed slot 3041 during the insertion of the to-be-connected member into the insertion cavity.

[0048] In some examples, as shown in Figure 3 and Figure 5As shown, the elastic sleeve 3 protrudes towards the shell 2 to form a compressed part 305, and the accommodating groove 302 is located on the compressed part 305, and the shell 2 protrudes towards the elastic sleeve 3 to form a pressing part 201 for pressing the compressed part 305; when the pressing part 201 moves forward to contact the compressed part 305, the pressing part 201 presses the compressed part 305 at this time, and the to-be-connected part in the plug-in cavity cannot expand the elastic sleeve 3 to separate from the plug-in cavity, and when the pressing part 201 moves backward to separate from the compressed part 305, the pressing part 201 releases the pressure on the compressed part 305 at this time, and the to-be-connected part in the plug-in cavity can expand the elastic sleeve 3 to separate from the plug-in cavity.

[0049] In some examples, as shown in Figure 3 and Figure 5 As shown, the limiting convex ring 301 is formed with a guide inclined surface 306 for guiding the to-be-connected part at one end away from the fixed section 303, and the to-be-connected part first contacts the guide inclined surface 306 during entering the plug-in cavity to make the limiting convex ring 301 gradually deform radially, and the guide inclined surface 306 gradually inclines inward from the deformed section 304 to the fixed section 303.

[0050] In some examples, as shown in Figure 2 and Figure 4 As shown, the end of the shell 2 is bent inward to form a lap joint part 202 for lap joint with the end of the elastic sleeve 3 to limit the end of the elastic sleeve 3, and the lap joint part 202 is a conical surface, and a ring cavity is formed between the lap joint part 202 and the shell 2, and the ring cavity cooperates with the elastic sleeve 3 to limit the maximum displacement of the shell 2 moving backward.

[0051] In some examples, as shown in Figure 2 and Figure 4 As shown, the inner shell 1 is internally provided with a plug pin 5, the plug pin 5 contacts the to-be-connected part to realize electrical connection, and an insulating part 6 is arranged between the plug pin 5 and the inner shell 1, a sealing part 7 is arranged between the outer peripheral wall of the insulating part 6 and the inner peripheral wall of the inner shell 1, and the sealing part 7 can be but is not limited to an O-shaped sealing ring.

[0052] Working principle:

[0053] During connection, the to-be-connected part is first inserted into the plug-in cavity, contacts the guide inclined surface 306 of the limiting convex ring 301, and makes the limiting convex ring 301 gradually deform radially and be expanded, and when the to-be-connected part passes after the limiting convex ring 301 deforms to a certain extent, the limiting convex ring 301 radially resets to preliminarily limit the to-be-connected part, and the elastic part 4 arranged outside the limiting convex ring 301 prevents the elastic sleeve 3 from deforming excessively during the process;

[0054] Then, the shell 2 moves forward, when the pressing part 201 of the shell 2 moves to contact with the pressed part 305 of the elastic sleeve 3, at this time, the pressing part 201 presses the pressed part 305, at the same time, the locking pin 101 on the shell 2 moves from the unlocking groove 2031 to the communication position of the unlocking groove 2031 and the locking groove 2032, then the shell 2 rotates circumferentially, the locking pin 101 enters the locking groove 2032, and when the locking pin 101 moves to abut against the groove wall of the locking groove 2032, at this time, a "click" sound can be heard, the shell 2 and the inner shell 1 are axially locked, at this time, the pressing part 201 forces the pressed part 305 to always press against the outside of the elastic sleeve 3, the to-be-connected part in the plug-in cavity cannot expand the elastic sleeve 3 to separate from the plug-in cavity;

[0055] When separating, first, the shell 2 reversely rotates, so that the locking pin 101 moves from the locking groove 2032 to the communication position of the locking groove 2032 and the unlocking groove 2031, at this time, the shell 2 moves backward, when the pressing part 201 moves backward to separate from the pressed part 305, at this time, the pressing part 201 releases the pressure on the pressed part 305, then a pulling force is applied to the connected part, which can expand the limiting convex ring 301 to make it radially deform to exit the plug-in cavity.

[0056] With the above ideal embodiment according to the utility model as the inspiration, through the above description, the relevant staff can make various changes and modifications without deviating from the technical idea of the utility model. The technical scope of the utility model is not limited to the content in the specification, and the technical scope must be determined according to the scope of claims.

Claims

1. A quick-plug anti-loose connector, characterized by: The utility model relates to a connector, which comprises: an inner shell (1); an outer shell (2) sleeved outside the inner shell (1) and movable in the circumferential and axial directions of the inner shell (1); an elastic sleeve (3) between the outer shell (2) and the inner shell (1), wherein an insertion cavity is formed between the inner circumferential wall of the elastic sleeve (3) and the outer circumferential wall of the inner shell (1), the elastic sleeve (3) is provided with a limiting convex ring (301) protruding inward and serving to be pried apart by a to-be-connected member during the insertion of the to-be-connected member into the insertion cavity, and the limiting convex ring (301) can limit the to-be-connected member in the insertion cavity under the compression of the outer shell (2) during the axial movement of the outer shell (2); and a locking mechanism for locking the axial position of the outer shell (2) to continuously press the limiting convex ring (301) by the outer shell (2).

2. A quick-plug anti-loosening connector according to claim 1, characterized in that: The elastic sleeve (3) is externally sleeved with an elastic member (4) for limiting the excessive deformation of the elastic sleeve (3) during the insertion of the to-be-connected member into the insertion cavity.

3. A quick-plug anti-loosening connector according to claim 2, characterized in that: The elastic member (4) is a C-shaped ring or a spring.

4. A quick-plug anti-loosening connector according to claim 2, characterized in that: The outer circumferential wall of the elastic sleeve (3) is recessed to form a containing groove (302) for containing the elastic member (4), and the containing groove (302) extends in the circumferential direction of the elastic sleeve (3).

5. The quick-plug anti-loose connector of claim 1, wherein: The locking mechanism comprises a locking pin (101) on the outer shell (2) and the inner shell (1) respectively and a sliding groove (203) matched with the locking pin (101), the sliding groove (203) comprises an unlocking groove (2031) extending in the axial direction and a locking groove (2032) extending in the circumferential direction, and the unlocking groove (2031) and the locking groove (2032) are in communication.

6. A quick-plug anti-loosening connector according to claim 1, characterized in that: The elastic sleeve (3) comprises a fixed segment (303) fixed to the inner shell (1) and a deformed segment (304) capable of being elastically deformed, the limiting convex ring (301) is located on the deformed segment (304), and the deformed segment (304) is provided with a plurality of deformation grooves (3041) extending in the circumferential direction of the deformed segment (304), each of the deformation grooves (3041) extends in the axial direction and penetrates through one end of the elastic sleeve (3).

7. A quick-plug anti-loosening connector according to claim 1, characterized in that: The elastic sleeve (3) is protruded outward to form a compression part (305) for the outer shell (2), and the outer shell (2) is protruded inward to form a pressing part (201) for pressing the compression part (305).

8. The quick-plug anti -unscrew connector according to claim 1, wherein: The end of the limiting convex ring (301) away from the fixed segment (303) is provided with a guide inclined surface (306) for guiding the to-be-connected member.

9. The quick-plug anti -unscrew connector according to claim 1, wherein: The end of the outer shell (2) is inwardly bent to form a lap joint part (202) for lap joint with the end of the elastic sleeve (3) to limit the end of the elastic sleeve (3).

10. The quick-plug anti -unscrew connector according to claim 1, wherein: The inner shell (1) is internally provided with a plug pin (5), and an insulating member (6) is arranged between the plug pin (5) and the inner shell (1).

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