Push-pull self-locking three-core electrical connector

Abstract

This invention discloses a push-pull self-locking three-core electrical connector, including an insertion-end locking structure and a receiving-end locking structure. The insertion-end locking structure includes a first metal shell and an elastic latch and a center conductor pin disposed within the first metal shell. The receiving-end locking structure includes a second metal shell and a locking groove and a center conductor sleeve disposed within the second metal shell. The elastic latch includes a latch body and a latch head. The latch head is elastically engaged with the locking groove in a locked state. The latch head can be released from the locking groove by sliding and compressing it on the first metal shell under external force, thus unlocking the latch head. The center conductor pin cooperates with the center conductor sleeve. A beveled terminal is disposed within the center conductor sleeve, which contacts the center conductor pin. This invention achieves true push-pull operation; insertion is achieved with a simple push and unlocking with a simple pull, which can be completed with one hand, making it more efficient than other connection methods.

Description

Technical Field

[0001] This invention relates to the technical field of electrical connectors, and more specifically to a three-core electrical connector with a push-pull self-locking and unlocking structure. Background Technology

[0002] Existing three-core electrical connectors are mainly used in industrial equipment, medical devices, and testing instruments. They often require frequent plugging and unplugging and reliable connections. Common methods include threaded locking, bayonet locking, or button unlocking. Among these, threaded locking is relatively reliable, but the operation is cumbersome and time-consuming when plugging and unplugging frequently. Bayonet locking (such as BNC type) is faster, but it is prone to loosening under vibration. Button unlocking has a complex button structure and may cause accidental disconnection due to accidental activation.

[0003] Therefore, there is an urgent need for a compact three-core electrical connector that can enable quick, one-handed plugging and unplugging, as well as high vibration resistance and protection against accidental unlocking. Summary of the Invention

[0004] To overcome the aforementioned problems, the present invention aims to provide a push-pull self-locking three-core electrical connector, which realizes true push-pull operation. When inserted, it locks with a push and when pulled out, it opens with a pull. It can be completed with one hand, and its efficiency is far higher than other connection methods.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a push-pull self-locking three-core electrical connector, comprising an insertion end locking structure and a receiving end locking structure.

[0006] The insertion end locking structure includes a first metal shell and an elastic buckle and a central conductor pin disposed within the first metal shell;

[0007] The receiving end locking structure includes a second metal shell and a locking groove and a center conductor sleeve disposed within the second metal shell;

[0008] The elastic latch includes a latch body and a latch head. The latch head is elastically engaged with the latch groove in a locked state. The latch head is pushed out of the latch groove by external force through sliding compression on the first metal shell, thus unlocking the latch head.

[0009] The central conductor needle engages with the central conductor sleeve, and the central conductor needle moves within the central conductor sleeve;

[0010] The central conductor sleeve is provided with a matching oblique terminal, which contacts the central conductor pin to realize signal transmission.

[0011] Preferably, the insertion end locking structure is further provided with an anti-misinsertion key, and the receiving end locking structure is provided with an anti-misinsertion key groove that cooperates with the anti-misinsertion key.

[0012] Preferably, the latch head has a protruding trapezoidal structure.

[0013] Preferably, at least two latch heads are provided, and the number of latch slots is the same as the number of latch heads.

[0014] The advantages of this invention are: convenient operation, realizing true push-pull operation, locking with a push when inserting and unlocking with a pull when pulling out, which can be completed with one hand, and the efficiency is much higher than other connections; reliable connection, after locking, the engagement between the locking head and the locking groove can withstand greater axial tension and vibration, avoiding loosening caused by vibration; and prevention of accidental unlocking, unlocking requires active and direct axial pulling of the first metal shell, avoiding accidental disconnection caused by lateral accidental contact of ordinary button-type connections, thus providing higher safety. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this embodiment;

[0016] Figure 2 This is a schematic diagram of the insertion end locking structure in this embodiment;

[0017] Figure 3 This is a schematic diagram of the receiving end locking structure in this embodiment;

[0018] Figure 4 This is a cross-sectional structural diagram of this embodiment;

[0019] Figure 5 This is a schematic diagram of the elastic latch in this embodiment.

[0020] In the diagram: 1. Insertion end locking structure; 11. First metal shell; 12. Elastic latch; 13. Center conductor pin; 14. Latch body; 15. Latch head; 16. Anti-misinsertion key; 2. Receiving end locking structure; 21. Second metal shell; 22. Locking groove; 23. Center conductor sleeve; 24. Angled insertion terminal; 25. Anti-misinsertion keyway. Detailed Implementation

[0021] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.

[0022] See Figures 1-5 As shown, this embodiment discloses a push-pull self-locking three-core electrical connector, including an insertion end locking structure 1 and a receiving end locking structure 2.

[0023] The insertion end locking structure 1 includes a first metal housing 11 and an elastic latch 12 and a central conductor pin 13 disposed within the first metal housing 11;

[0024] The receiving end locking structure 2 includes a second metal housing 21 and a locking groove 22 and a center conductor sleeve 23 disposed in the second metal housing 21;

[0025] The elastic latch 12 includes a latch body 14 and a latch head 15. The latch head 15 is elastically engaged with the lock groove 22 in a locked state. The latch head 15 is pushed and compressed on the first metal shell 11 by external force to make the latch head 15 exit the lock groove 22 and be in an unlocked state.

[0026] The center conductor pin 13 cooperates with the center conductor sleeve 23 and moves within the center conductor sleeve 23. The center conductor sleeve 23 is provided with a beveled terminal 24 that cooperates with it. In the locked state, the beveled terminal 24 contacts the center conductor pin 13 and provides a positive force to form an effective contact with the center conductor pin 13, thereby realizing signal transmission.

[0027] The insertion end locking structure 1 is also provided with an anti-misinsertion key 16, and the receiving end locking structure 2 is provided with an anti-misinsertion key groove 25 that cooperates with the anti-misinsertion key 16. Through the triangular arrangement of the terminals and the additional key groove structure, the unique correct direction of the connection is ensured, preventing damage from misinsertion.

[0028] The latch head 15 has a protruding trapezoidal structure. There are at least two latch heads 15. The number of latch slots 22 is the same as the number of latch heads. It is better to have two latch heads 15.

[0029] In use, the anti-misinsertion key 16 of the insertion end locking structure 1 is aligned with the anti-misinsertion key slot 25 of the receiving end locking structure 2 and inserted. The insertion end locking structure 1 is then pushed along the insertion direction until a crisp "click" is heard. The locking head 15 is fully engaged in the locking groove 22 to form a locked state. At the same time, it ensures that the center conductor pin 13 of the insertion end locking structure 1 is inserted into the center conductor sleeve 23 of the receiving end locking structure 2. Effective contact is formed by the positive force provided by the inclined insertion terminal 24, thereby realizing signal transmission. When unlocking is required, the first metal shell 11 of the insertion end locking structure 1 is simply slid in the pulling direction. At this time, the first metal shell 11 compresses the locking head 15, and the locking head 15 then exits from the locking groove 22, losing the locking effect, thus completing the unlocking and pulling out.

[0030] This invention features a compact and durable structure. The self-locking mechanism is mainly integrated into the first metal shell of the push-pull mechanism, resulting in fewer parts and a simple and compact structure. The one-piece molded elastic locking arm has a long service life. At the same time, there is a clear "click" sound and a slight vibration felt in the hand when locking and unlocking, providing clear operational feedback to the user.

[0031] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A push-pull self-locking three-core electrical connector, comprising an insertion end locking structure and a receiving end locking structure, characterized in that, The insertion end locking structure includes a first metal shell and an elastic buckle and a central conductor pin disposed within the first metal shell; The receiving end locking structure includes a second metal shell and a locking groove and a center conductor sleeve disposed within the second metal shell; The elastic latch includes a latch body and a latch head. The latch head is elastically engaged with the latch groove in a locked state. The latch head is pushed out of the latch groove by external force through sliding compression on the first metal shell, thus unlocking the latch head. The central conductor needle engages with the central conductor sleeve, and the central conductor needle moves within the central conductor sleeve; The central conductor sleeve is provided with a beveled terminal that mates with it, and the beveled terminal is in contact with the central conductor pin.

2. The push-pull self-locking three-core electrical connector according to claim 1, characterized in that, The insertion end locking structure is also provided with an anti-misinsertion key, and the receiving end locking structure is provided with an anti-misinsertion key groove that cooperates with the anti-misinsertion key.

3. The push-pull self-locking three-core electrical connector according to claim 1, characterized in that, The latch head has a protruding trapezoidal structure.

4. The push-pull self-locking three-core electrical connector according to claim 1, characterized in that, The latch head is provided with at least two, and the number of latch slots is the same as the number of latch heads.

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