CN220324811U

CN220324811U - Liquid-proof probe type connector

Info

Publication number: CN220324811U
Application number: CN202321787250.5U
Authority: CN
Inventors: 蔡宗明; 陈益斌; 肖大庭
Original assignee: Dongguan CCP Contact Probes Co Ltd
Current assignee: Dongguan CCP Contact Probes Co Ltd
Priority date: 2023-07-07
Filing date: 2023-07-07
Publication date: 2024-01-09
Anticipated expiration: 2033-07-07

Abstract

The utility model discloses a liquid-proof probe type connector which comprises a needle tube, a needle shaft, an elastic piece and a tail plug. The needle tube is provided with a containing cavity, a first opening and a second opening which are communicated with the containing cavity are respectively penetrated through the front end and the rear end of the needle tube, the tail plug is fixed in the containing cavity and seals the second opening, one end of the needle shaft is sleeved on the tail plug in a sliding manner, the other end of the needle shaft extends out of the first opening, and the tail plug and the interior of the needle shaft jointly enclose the containing cavity. The elastic piece is arranged in the accommodating cavity, and two ends of the elastic piece respectively prop against the needle shaft and the tail plug. When the utility model is applied to an electronic product, when the liquid is contacted, if the liquid slightly permeates into the accommodating cavity through the first opening, the elastic piece is protected from being contacted with the liquid by virtue of the accommodating cavity, so that corrosion caused by electrolysis due to electrifying of the elastic piece is avoided, and the service life of the elastic piece is prolonged to prolong the service life of the whole probe type connector. Secondly, the tail plug is pressed into the accommodating cavity, so that the assembly is quick, the manufacturing difficulty is low, and the manufacturing efficiency is high.

Description

Liquid-proof probe type connector

Technical Field

The utility model relates to the field of connectors, in particular to a liquid-proof probe type connector.

Background

The probe type connector is a Spring type probe which consists of a movable needle head, a needle tube and three basic parts of a Spring, and is also called as a Spring needle, a Spring thimble, a Spring probe, a Spring Loaded and Pogo Pin connector, and the probe type connector is generally applied to precise connection in electronic products such as mobile phones, communication, automobiles, medical treatment, aerospace and the like. With the development of technology and the advancement of humanity, in order to meet the increasing process demands of people, the structure process of the probe connector is also improved continuously.

Probe connectors used in electronic devices are inevitably exposed to liquids as the device moves during use. After the probe type connector contacts with liquid, the liquid can flow into the needle tube through the needle tube to be in contact with the spring, and when the probe type connector is electrified, the spring can be electrolyzed to corrode, so that the service life of the spring is reduced, and the service life of the whole connector is further influenced.

Thus, there is a great need for a liquidproof probe connector that isolates liquid from the spring to overcome the above-mentioned drawbacks.

Disclosure of Invention

The utility model aims to provide a liquid-proof probe type connector capable of isolating liquid from a spring.

In order to achieve the above purpose, the liquid-proof probe type connector comprises a needle tube, a needle shaft, an elastic piece and a tail plug, wherein the needle tube is provided with a containing cavity, a first opening and a second opening which are communicated with the containing cavity are respectively penetrated through the front end and the rear end of the needle tube, the tail plug is fixed in the containing cavity and seals the second opening, one end of the needle shaft is sleeved on the tail plug in a sliding manner, the other end of the needle shaft extends out of the first opening, the tail plug and the interior of the needle shaft jointly enclose a containing cavity, and the elastic piece is arranged in the containing cavity, and two ends of the elastic piece respectively prop against the needle shaft and the tail plug.

Compared with the prior art, when the liquid-proof probe type connector is applied to an electronic product, one end of the needle shaft is sleeved on the tail plug in a sliding way when the electronic product is in contact with liquid, and the tail plug and the interior of the needle shaft are jointly enclosed to form a containing cavity, so that the containing cavity is not communicated with the containing cavity, and in case that the liquid slightly permeates into the containing cavity through the first opening, the containing cavity is not communicated with the containing cavity, and the probe type connector can protect the elastic piece from being contacted with the liquid by virtue of the containing cavity, so that corrosion caused by electrolysis when the elastic piece is electrified is avoided, and the service life of the elastic piece is prolonged, so that the service life of the whole probe type connector is prolonged. At the same time, by blocking the second opening with the tail plug, even if the probe connector of the present utility model is in contact with a liquid, it is difficult to infiltrate into the accommodating chamber from the second opening. And secondly, by means of the second opening, the needle shaft, the elastic piece and the tail plug are all arranged in the needle tube from the second opening, and the tail plug is arranged in the accommodating cavity to block the second opening, so that the assembly step is greatly simplified, the needle tube does not need to be riveted before being manufactured, and the manufacturing cost of the needle tube is reduced.

Preferably, the needle shaft has a first slot hole with a downward opening, the tail plug includes a sleeve portion, the sleeve portion is located at one end of the tail plug facing away from the second opening, the sleeve portion is inserted into the first slot hole and has a second slot hole with an upward opening, and the first slot hole and the second slot hole form the accommodating cavity.

Preferably, a first chamfer is circumferentially arranged at one end of the sleeve part, and the first chamfer is positioned in the second slot hole.

Preferably, the angle of the first chamfer ranges from 10 degrees to 30 degrees.

Preferably, a second chamfer is circumferentially arranged at one end of the needle shaft, and the second chamfer is located in the first slot hole.

Preferably, the accommodating cavity comprises a first accommodating cavity and a second accommodating cavity from front to back in sequence, the diameter of the first accommodating cavity is smaller than that of the second accommodating cavity, so that a first limiting structure is formed at the junction of the first accommodating cavity and the second accommodating cavity, a first resisting structure is arranged on the outer side face of the needle shaft in an outward protruding mode, and the first resisting structure is resisted on the first limiting structure.

Preferably, the accommodating cavity further comprises a third accommodating cavity, the third accommodating cavity is located at the rear of the second accommodating cavity, the diameter of the third accommodating cavity is larger than that of the second accommodating cavity, so that a second limiting structure is formed at the junction of the second accommodating cavity and the third accommodating cavity, a second resisting structure is outwards protruded from the outer side surface of the tail plug, the second resisting structure is located in the third accommodating cavity, and the second resisting structure is resisted on the second limiting structure.

Preferably, the tail plug further comprises a press-fit portion, the press-fit portion is located at one end, deviating from the first slot hole, of the sleeve portion, a clamping structure is arranged on the side wall of the press-fit portion in a circumferential protruding mode, and the clamping structure is matched with the second accommodating cavity in a clamping mode.

Preferably, the elastic member is a spring.

Drawings

Fig. 1 is a perspective view of a liquid repellent probe connector of the present utility model.

Fig. 2 is a cross-sectional view of the liquid repellent probe connector of the present utility model.

Fig. 3 is an exploded view of the liquid repellent probe connector of the present utility model.

Detailed Description

In order to describe the technical content and constructional features of the present utility model in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.

Referring to fig. 1 to 3, the liquid-proof probe connector 100 of the present utility model includes a needle tube 1, a needle shaft 2, an elastic member 3 and a tail plug 4. The needle tube 1 has a housing chamber 11, and a first opening 12 and a second opening 13 communicating with the housing chamber 11 are respectively penetrated at the front end and the rear end of the needle tube 1. The tail plug 4 is fixed in the accommodating cavity 11 through press fitting and seals the second opening 13, one end of the needle shaft 2 is sleeved on the tail plug 4 in a sliding manner, the other end of the needle shaft 2 extends out of the first opening 12, the tail plug 4 and the interior of the needle shaft 2 jointly enclose an accommodating cavity 5, the accommodating cavity 5 is not communicated with the accommodating cavity 11, and the elastic piece 3 is arranged in the accommodating cavity 5, and two ends of the elastic piece are respectively propped against the needle shaft 2 and the tail plug 4. For example, the elastic member 3 is a spring, but not limited thereto. The needle shaft 2 is subjected to external force to slide downwards while compressing the elastic piece 3, when the external force disappears, the elastic piece resets, and under the elastic action of the elastic piece 3, the needle shaft 2 slides upwards to enable the top of the needle shaft to extend out of the first opening 12.

Compared with the prior art, when the liquid-proof probe connector 100 is applied to an electronic product, and when the electronic product is in use, the liquid slightly permeates into the accommodating cavity 11 through the first opening 12, and the accommodating cavity 5 is not communicated with the accommodating cavity 11, so that the elastic piece 3 can be protected from being contacted with the liquid by virtue of the accommodating cavity 5, corrosion caused by electrolysis due to electrification of the elastic piece 3 is avoided, and the service life of the elastic piece 3 is prolonged to prolong the service life of the whole probe connector. At the same time, by closing the second opening 13 with the tail plug 4, even if the probe connector of the present utility model is in contact with a liquid, it is difficult to infiltrate from the second opening 13 into the housing chamber 11. More specifically, the following is:

referring to fig. 1 to 3, the needle shaft 2 has a first slot 21 with a downward opening, the tail plug 4 includes a sleeve portion 42, the sleeve portion 42 is located at an end of the tail plug 4 facing away from the second opening 13, the sleeve portion 42 is inserted into the first slot 21 and has a second slot 41 with an upward opening, and the first slot 21 and the second slot 41 form the accommodating cavity 5. Preferably, one end of the sleeve portion 42 is circumferentially provided with a first chamfer 421, and the first chamfer 421 is located in the second slot. By means of the first chamfer 421, smooth insertion of the elastic member 3 is facilitated, while interference and jamming of the elastic member 3 with the end of the sleeve portion 42 during deformation is also prevented. Specifically, the angle of the first chamfer 421 ranges from 10 ° to 30 °. For example, the first chamfer 421 is 10 °, 15 °, 20 °, 25 °, or 30 °, but not limited thereto. Preferably, the second chamfer 211 is circumferentially provided at one end of the needle shaft 2, and the second chamfer 211 is located in the first slot 21, so that smooth insertion of the sleeve portion 42 into the first slot 21 is facilitated by the second chamfer 211.

For example, when assembling the liquid-proof probe connector 100 of the present utility model, in a first step, the needle shaft 2 is put in from the second opening 13 of the needle tube 1; secondly, placing the elastic piece 3 into the second slotted hole 41 of the tail plug 4; thirdly, the tail plug 4 with the elastic piece 3 is pressed in from the second opening 13 to block the second opening 13, at this time, the needle shaft 2 is sleeved on the tail plug 4, meanwhile, one end of the sleeve part 42 is inserted into the first slotted hole 21, the first slotted hole 21 and the second slotted hole 41 are opposite to form the accommodating cavity 5, the elastic piece 3 enters the first slotted hole 21 and is completely placed in the accommodating cavity 5, and two ends of the elastic piece 3 respectively prop against the needle shaft 2 and the tail plug 4. Thus, by means of the first chamfer 421, a guiding action for the elastic element 3 is facilitated when the elastic element 3 is put in the second step. The second chamfer 211 is advantageous in guiding the insertion of the sleeve portion 42 into the first slot 21 when the tail plug 4 is inserted in the third step.

Referring to fig. 2, the accommodating cavity 11 includes a first accommodating cavity 111, a second accommodating cavity 112, and a third accommodating cavity 113 in order from front to back. Specifically, the diameter of the first accommodating cavity 111 is smaller than that of the second accommodating cavity 112, so that the junction between the first accommodating cavity 111 and the second accommodating cavity 112 forms a first limiting structure 114. The outer side of the needle shaft 2 is provided with a first abutment 24 protruding outwards. Specifically, the needle shaft 2 includes a head 22 and a body 23 in this order from front to back, and the diameter of the head 22 is smaller than the diameter of the body 23, so that the junction between the head 22 and the body 23 forms a first retaining structure 24. The first resisting structure 24 is resisting against the first limiting structure 114. The first stopper 24 is stopped against the first stopper 114 to prevent the needle shaft 2 from being removed from the needle tube 1 through the first opening 12. Of course, in other embodiments, the outer side of the needle shaft 2 is provided with a circumferential protrusion to form the first resisting structure 24, which is not limited thereto. It will be appreciated that the head 22 extends beyond the first opening 12.

Preferably, the third accommodating cavity 113 is located at one end of the second accommodating cavity 112 away from the first accommodating cavity 111, and the diameter of the third accommodating cavity 113 is larger than that of the second accommodating cavity 112, so that the junction between the second accommodating cavity 112 and the third accommodating cavity 113 forms a second limiting structure 115. Specifically, the tail plug 4 further includes a press-fitting portion 43 and a limiting portion 44 in sequence, where the diameter of the limiting portion 44 is greater than that of the press-fitting portion 43, so that a second resisting structure is formed at the junction of the press-fitting portion 43 and the limiting portion 44. The second resisting structure is located in the third accommodating cavity, and the second resisting structure resists against the second limiting structure 115. Of course, in other embodiments, the outer side of the tail plug 4 protrudes outwards to form a circumferential protrusion, and the protrusion is a second resisting structure, which is not limited thereto. Preferably, the bottom surface of the stopper 44 is flush with the bottom surface of the needle tube 1. The press-fitting portion 43 is located at one end of the sleeve portion 42 away from the first slot 21, and a clamping structure 431 is circumferentially protruding from a sidewall of the press-fitting portion 43, where the clamping structure 431 is in clamping fit with the second accommodating cavity 112. Therefore, in the third assembling step, after the tail plug 4 is press-fitted into the needle tube 1, the tail plug 4 is in locking fit with the second accommodating cavity by means of the locking structure 431, so that the connection between the tail plug 4 and the needle tube 1 is stable and reliable.

Preferably, the tail plug 4 is an insulator. The path of current flow from the needle shaft 2 to the spring 3 to the tail plug 4 and then to the needle cannula 1 is avoided. So that current flows only through the needle shaft 2 to the needle cannula 1, avoiding burning out the spring 3 and resulting in rejection of the entire connector. Of course, in other embodiments, the tail plug may be a metal structure, and is not limited thereto.

The working principle of the liquid-proof probe connector 100 of the present utility model will be described with reference to the accompanying drawings: when the present utility model is energized, current is conducted directly from the needle shaft 2 to the needle cannula 1. The utility model uses the needle shaft 2 and the tail plug 4 to enclose the accommodating cavity 5 for accommodating the elastic element 3, and the elastic element 3 is enclosed by the accommodating cavity 5 instead of being exposed in the accommodating cavity 11. When the connector is applied to an electronic product and has occasions of liquid contact, water cannot contact with the elastic piece 3 after entering the accommodating cavity 11, so that the phenomenon that the elastic piece 3 is corroded by water rust or is corroded by hydrolysis after being electrified is avoided. Thereby improving the life of the elastic member 3 and the life of the entire probe connector. Secondly, by means of the second opening 13, the needle shaft 2, the elastic piece 3 and the tail plug 4 enter the needle tube 1 from the second opening 13, and the tail plug 4 is plugged into the accommodating cavity 11 to block the second opening 13, so that the assembling step is greatly simplified, the needle tube 1 does not need to be riveted before being manufactured, and the manufacturing cost of the needle tube 1 is reduced.

The foregoing disclosure is only illustrative of the preferred embodiments of the present utility model and is not to be construed as limiting the scope of the utility model, which is defined by the appended claims.

Claims

1. The utility model provides a prevent liquid probe type connector, its characterized in that includes needle tubing, needle shaft, elastic component and tail stopper, the needle tubing has and holds the chamber, the front end and the rear end of needle tubing run through respectively with hold first opening and the second opening of chamber intercommunication, the tail stopper is fixed in hold the chamber and shutoff the second opening, needle shaft one end slidingly cup joint in the tail stopper and its other end stretch out in first opening, the tail stopper with the inside of needle shaft encloses into jointly and has the holding chamber, the elastic component is located hold the intracavity and both ends are supported respectively in the needle shaft with the tail stopper.

2. The liquid resistant probe connector according to claim 1, wherein the needle shaft has a first slot opening downward, the tail plug includes a sleeve portion at an end of the tail plug facing away from the second opening, the sleeve portion is inserted into the first slot and has a second slot opening upward, and the first slot and the second slot form the accommodating cavity.

3. The liquid-proof probe connector according to claim 2, wherein one end of the sleeve portion is circumferentially provided with a first chamfer, the first chamfer being located in the second slot.

4. The liquidproof probe connector of claim 3, wherein the first chamfer angle ranges from 10 ° to 30 °.

5. The liquidproof probe connector of claim 2, wherein one end of the needle shaft is circumferentially provided with a second chamfer, the second chamfer being located within the first slot.

6. The liquid-proof probe type connector according to claim 2, wherein the accommodating cavity comprises a first accommodating cavity and a second accommodating cavity from front to back in sequence, the diameter of the first accommodating cavity is smaller than that of the second accommodating cavity, so that a first limiting structure is formed at the junction of the first accommodating cavity and the second accommodating cavity, a first resisting structure is arranged on the outer side surface of the needle shaft in a protruding mode, the first resisting structure is located in the second accommodating cavity, and the first resisting structure is resisted on the first limiting structure.

7. The liquid-proof probe connector according to claim 6, wherein the housing cavity further comprises a third housing cavity, the third housing cavity is located at one end of the second housing cavity away from the first housing cavity, the diameter of the third housing cavity is larger than that of the second housing cavity, so that a second limiting structure is formed at the junction of the second housing cavity and the third housing cavity, a second resisting structure protrudes outwards from the outer side surface of the tail plug, the second resisting structure is located in the third housing cavity, and the second resisting structure resists against the second limiting structure.

8. The liquid-proof probe connector according to claim 6, wherein the tail plug further comprises a press-fitting portion, the press-fitting portion is located at one end of the sleeve portion, which is away from the first slot hole, and a clamping structure is circumferentially protruding from a side wall of the press-fitting portion and is in clamping fit with the second accommodating cavity.

9. The liquidproof probe connector of any one of claims 1 to 8, wherein the resilient member is a spring.