Novel external locking connector

Abstract

The utility model relates to a novel external lock joint, which belongs to the technical field of joint equipment, and comprises a joint main body and a shell connected onto the joint main body, a first boss is arranged on the joint main body, four clamping jaws are arranged on the shell and are in interference fit connection with the first boss, four limiting openings are arranged on the outer ring of the shell, and the limiting openings are arranged on the outer ring of the shell. The connector body further comprises a lock spring, the lock spring comprises two locking ends and two unlocking ends, the two locking ends and the two unlocking ends are symmetrically distributed in a limiting opening in the shell, and the locking ends and the unlocking ends are connected through reinforcing ribs. The problem of easy falling in the transportation process is solved, the shell can rotate by 360 degrees, and assembly and maintenance are convenient.

Description

Technical Field

[0001] The utility model discloses a novel external locking connector, which belongs to the technical field of connector equipment. Background Art

[0002] Connector bases are widely used in systems with high axial space requirements and low pressure, such as fuel systems and thermal management systems. Quick-connect fittings that match these bases are compact and low-cost, and manufacturers are already supplying them in bulk. These connectors utilize a sealing ring that mates with the inner hole of the base to ensure sealing. The boss of the locking spring mates with the outer ring of the base, ensuring a secure connection and preventing the connector and base from falling off. However, due to the relatively thin design structure, insufficient strength, and openings, the assembly inevitably rubs against items such as circulating equipment during transportation, which can easily cause the locking spring to fall off. If the locking spring is found to have fallen off during loading, it will need to be reinstalled and reassembled, affecting on-site efficiency. When the pipe needs to be disconnected for vehicle maintenance, the original joint design is to press the retaining spring from a single point to open it and disengage the joint. However, the actual situation is that single-point pressing cannot open the retaining spring to the state of disengaging the joint. The retaining spring needs to be removed from the joint and then the joint needs to be disengaged from the base. Therefore, the retaining spring is easy to be lost and easy to fall off during use, which causes many after-sales problems. Utility Model Content

[0003] In order to solve the problems existing in the prior art such as the loose connection between the joint and the base and the easy falling of the lock spring, we propose a new type of external lock joint.

[0004] The utility model is a novel external locking connector, which is characterized by: Figures 1 to 5 As shown, the external lock connector includes: a connector body 1 and a shell 2 connected to the connector body 1, the connector body 1 is provided with a first boss 3, the shell 2 is provided with four claws 4, the four claws 4 are connected to the first boss 3 by interference fit, and the outer ring of the shell 2 is provided with four limit openings 5;

[0005] The external locking joint also includes: a locking spring, which includes two locking ends 6 and two unlocking ends 7, the two locking ends 6 and the two unlocking ends 7 are symmetrically distributed in the limiting opening 5 on the shell 2, and the locking end 6 and the unlocking end 7 are connected by reinforcing ribs.

[0006] Furthermore, a limit stopper 8 is provided on the connector body 1 to prevent the housing 2 from being over-assembled.

[0007] Furthermore, adjacent positions of the four clamping claws 4 are each provided with a clamping opening 9 .

[0008] Furthermore, a second boss 10 is provided in the housing 2 to improve the stability of the lock spring in the housing 2 .

[0009] Furthermore, a sealing ring 11 is provided on the joint body 1 .

[0010] The beneficial effects of the present invention are:

[0011] 1. The shell of the utility model can be rotated 360 degrees, which is convenient for assembly and maintenance, and has high connection strength.

[0012] 2. The utility model adopts an embedded locking spring, which effectively improves the connection strength and solves the problem of easy falling during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the utility model, which also serves as an abstract drawing.

[0014] Figure 2 It is a side structural schematic diagram of the joint body 1 in the present invention.

[0015] Figure 3 It is a three-dimensional schematic diagram of the connection relationship between the lock spring and the housing 2 in the present invention.

[0016] Figure 4 This is a schematic diagram of the main structure of the lock spring in the utility model.

[0017] Figure 5 It is a three-dimensional schematic diagram of the connection relationship between the joint body 1 and the shell 2 in the present invention.

[0018] Figure 6 It is a cross-sectional schematic diagram of the connection relationship between the joint body 1 and the shell 2 in the present invention.

[0019] Figure 7 It is a side view of the structure of the existing base 12 that cooperates with the present invention.

[0020] Figure 8 It is a cross-sectional diagram of the connection relationship between the joint body 1 of the present invention and the existing base 12.

[0021] Figure 9 It is a cross-sectional diagram of the connection relationship between the housing 2 of the present invention and the existing base 12.

[0022] Description of reference numerals:

[0023] 1. Connector body, 2. Shell, 3. First boss, 4. Claw, 5. Limit opening, 6. Locking end, 7. Unlocking end, 8. Limit baffle, 9. Clamping opening, 10. Second boss, 11. Sealing ring, 12. Base. DETAILED DESCRIPTION

[0024] The following is a specific implementation example of the present invention, which is described in detail with reference to the accompanying drawings. It should be noted that the scope of application of the present invention is not limited to the following embodiments, and all similar structures based on the present invention are within the scope of application of the present invention.

[0025] The utility model is a new type of external lock connector, such as Figures 1 to 5 As shown, the external lock connector includes: a connector body 1 and a shell 2 connected to the connector body 1, the connector body 1 is provided with a first boss 3, and the shell 2 is provided with four claws 4. The four claws 4 are connected with the first boss 3 by interference fit, providing sufficient connection strength to keep the shell 2 stable. After passing the high point of the first boss 3, the claws 4 elastically return to their original positions, so that the shell 2 is clamped and does not fall off. The claws 4 can rotate 360 degrees around the connector body 1 for easy disassembly. The front end of the first boss 3 has an end bevel, which is conducive to the gradual deformation of the claws 4, reducing the assembly force and scrap rate. The outer ring of the shell 2 is provided with four limit openings 5;

[0026] The external locking joint also includes: a locking spring, which includes two locking ends 6 and two unlocking ends 7. The two locking ends 6 and the two unlocking ends 7 are symmetrically distributed in the limit opening 5 on the shell 2. When subjected to force, the force transmitted from the locking spring is received. The locking end 6 and the unlocking end 7 are connected by reinforcing ribs to improve structural performance and meet unlocking requirements.

[0027] As a further introduction to this embodiment, a limit stopper 8 is provided on the connector body 1 to prevent the housing 2 from being over-assembled.

[0028] As a further introduction to this embodiment, adjacent positions of the four clamping claws 4 are each provided with a clamping opening 9 .

[0029] As a further introduction to this embodiment, Figure 3 As shown, a second boss 10 is provided in the housing 2 to improve the stability of the lock spring in the housing 2 and also to increase the strength of the housing 2 .

[0030] As a further introduction to this embodiment, Figure 7 As shown, a sealing ring 11 is provided on the joint body 1 .

[0031] The working principle of this utility model is as follows:

[0032] like Figures 6-8As shown, the lock spring is connected to the base 12. When the connector body 1 is subjected to force, the force is transferred to the lock spring, which is then transmitted to the housing 2 through the upper end surface of the lock spring. To ensure that the lock spring does not deform or dislodge when subjected to force, a flat surface is designed on the upper end surface of the lock spring. To reduce assembly force, a guide bevel is designed at the front end of the lock spring. When the connector body 1 needs to be disconnected from the base 12, the unlocking end 7 is pressed toward the center on both sides, causing the locking end 6 to open outward, and the base 12 can be pulled outward. The connector body 1 and base 12 can be quickly connected by simply keeping the two components coaxial and inserting them. At the contact point between the base 12 and the lock spring, because both have bevels, the lock spring is stretched open under relatively small forces. After the base 12's external expansion passes through the narrowest point of the lock spring, the base 12's appearance suddenly decreases, and the lock spring returns to its initial position under elasticity, tightening the lock spring and base 12 to prevent disengagement. When the connector body 1 is subjected to force, the combined action of the connector body 1, housing 2, and lock spring can achieve a stable connection.

[0033] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A new type of external locking connector, characterized in that: The external lock connector comprises: a connector body (1) and a shell (2) connected to the connector body (1); the connector body (1) is provided with a first boss (3); the shell (2) is provided with four claws (4); the four claws (4) are connected to the first boss (3) in an interference fit; and the outer ring of the shell (2) is provided with four limiting openings (5); The external locking joint further comprises: a locking spring, the locking spring comprising two locking ends (6) and two unlocking ends (7), the two locking ends (6) and the two unlocking ends (7) being symmetrically distributed in the limiting opening (5) on the housing (2), and each adjacent locking end (6) and unlocking end (7) being connected by a reinforcing rib.

2. A novel external locking joint according to claim 1, characterized in that: The connector body (1) is provided with a limit stopper (8) for preventing the housing (2) from being over-assembled.

3. A novel external locking joint according to claim 1, characterized in that: Adjacent positions of the four clamping claws (4) are each provided with a clamping opening (9).

4. A novel external locking joint according to claim 1, characterized in that: A second boss (10) is provided in the housing (2) for improving the stability of the lock spring in the housing (2).

5. A novel external locking joint according to claim 1, characterized in that: A sealing ring (11) is provided on the joint body (1).

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