Dustproof and liquid-proof electronic connector

Abstract

The invention discloses a dustproof and liquid-proof electronic connector. The dustproof and liquid-proof electronic connector comprises a pin shaft, a sealing ring, a conductive seat body and a reset piece, an accommodating cavity penetrating through the first end face of the conductive seat body is formed in the conductive seat body, the accommodating cavity sequentially comprises a first cavity, a second cavity and a third cavity in the direction penetrating through the first end face of the conductive seat body, the third cavity is exposed out of the first end face of the conductive seat body, and the second cavity is eccentrically arranged relative to the first cavity; the needle shaft is assembled in the first cavity in a sliding mode, and the first end of the needle shaft is further exposed out of the third cavity. The sealing ring sleeves the needle shaft and is assembled in the second cavity; and the cavity side wall of the second cavity pushes the needle shaft to incline relative to the center line of the first cavity through the sealing ring so as to be propped against the cavity side wall of the first cavity. The reset piece enables the pin shaft to slide in the direction that the containing cavity penetrates through the first end face of the conductive base body. The dustproof and liquid-proof electronic connector provided by the invention can provide larger lateral force, so that the contact stability between the pin shaft and the conductive seat body is better, and the anti-vibration function is realized.

Description

Technical Field

[0001] The invention relates to the technical field of electrical connection, and in particular to a dust-proof and liquid-proof electronic connector. Background Art

[0002] As is known to all, electrical connectors are widely used in electronic products to realize electrical connection between electronic components and meet the requirements of charging and discharging or data transmission.

[0003] Among them, for the existing electrical connector with the function of preventing liquid, dust and other impurities from entering, it includes a needle shaft, a conductive seat, a sealing ring and a spring. The conductive seat has a receiving cavity that penetrates the first end surface of the conductive seat, the needle shaft is slidably assembled in the receiving cavity, and the first end of the needle shaft also extends from the first end surface of the conductive seat; the sealing ring is assembled in the receiving cavity and is sleeved on the needle shaft, and the sealing ring also abuts against the side wall of the receiving cavity. The spring is located in the receiving cavity and abuts against the needle shaft and the conductive seat.

[0004] When the electrical connector is in operation, the contact stability between the needle shaft and the conductive seat body is poor, so that the existing electrical connector cannot be adapted to anti-vibration occasions.

[0005] Therefore, there is an urgent need for a dust-proof and liquid-proof electronic connector to overcome one or more of the above-mentioned defects. Summary of the invention

[0006] The object of the present invention is to provide a dustproof and liquidproof electronic connector, which can provide a greater lateral force, so that the contact stability between the needle shaft and the conductive seat body is better and is suitable for dustproof and liquidproof vibration-resistant occasions.

[0007] To achieve the above-mentioned purpose, the dust-proof and liquid-proof electronic connector of the present invention includes a needle shaft, a sealing ring, a conductive seat body and a reset member. The conductive seat body has a receiving cavity that passes through the first end face of the conductive seat body. The receiving cavity includes a first cavity, a second cavity and a third cavity in sequence along the direction of passing through the first end face of the conductive seat body. The third cavity is exposed to the first end face of the conductive seat body, and the second cavity is eccentrically arranged relative to the first cavity; the needle shaft can be slidably assembled in the first cavity, and the first end of the needle shaft is also exposed to the outside from the third cavity; the sealing ring is sleeved on the needle shaft and assembled in the second cavity, and the cavity side wall of the second cavity is tilted relative to the center line of the first cavity by the sealing ring to push the needle shaft and abut against the cavity side wall of the first cavity. The reset member allows the needle shaft to slide along the direction of the receiving cavity passing through the first end face of the conductive seat body.

[0008] Compared with the prior art, by virtue of the eccentric arrangement of the second cavity relative to the first cavity, the side wall of the second cavity is pushed by the sealing ring to tilt the needle shaft relative to the center line of the first cavity and to contact the side wall of the first cavity, thereby providing a greater lateral force, so that the contact stability between the needle shaft and the conductive seat is better and suitable for dust-proof, liquid-proof and vibration-resistant occasions.

[0009] Preferably, the outer side of the sealing ring is also fixedly connected to the conductive seat body, and the inner side of the sealing ring is also slidably connected to the needle shaft; or, the outer side of the sealing ring is also slidably connected to the conductive seat body, and the inner side of the sealing ring is also fixedly connected to the needle shaft.

[0010] Preferably, the diameter of the second cavity is larger than the diameters of the first cavity and the third cavity, and the outer side of the sealing ring is also sandwiched between two cavity end surfaces of the second cavity.

[0011] Preferably, the dust-proof and liquid-proof electronic connector of the present invention further comprises a spring located in the first cavity, wherein the spring abuts between the needle shaft and the conductive seat.

[0012] Preferably, the needle shaft is provided with an assembly cavity penetrating the second end surface of the needle shaft, and the first end of the spring is placed in the assembly cavity.

[0013] Preferably, the dustproof and liquidproof electronic connector of the present invention also includes an intermediate conductive part arranged in the first cavity, the second end of the intermediate conductive part is connected to the conductive seat, the first end of the intermediate conductive part is placed in the assembly cavity, and the second end of the spring abuts against the intermediate conductive part.

[0014] Preferably, a receiving cavity penetrating the first end surface of the intermediate conductive member is formed on the intermediate conductive member, the receiving cavity is communicated with the assembly cavity, and the second end of the spring is placed in the receiving cavity.

[0015] Preferably, the second end face of the needle shaft has an inclined surface inclined relative to the axis of the needle shaft, and the first end of the spring abuts against the inclined surface.

[0016] Preferably, the conductive seat body comprises a needle tube and a sleeve fixedly mounted on the needle tube, the first cavity is formed in the needle tube, the first cavity also passes through the first end face of the needle tube, the second cavity and the third cavity are formed in the sleeve, the first end face of the sleeve forms the first end face of the conductive seat body, and the first end face of the needle tube forms a cavity end face of the second cavity.

[0017] Preferably, a fixing lug is provided on the side wall of one of the sleeve and the needle tube, and an engaging groove which is interference-fitted with the fixing lug is provided on the side wall of the other of the sleeve and the needle tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 1 is a plan view of a dust and liquid proof electronic connector according to a first embodiment of the present invention.

[0019] Figure 2 is along Figure 1 Internal view cut along the midline BB.

[0020] Figure 3 yes Figure 1 A plan view of a conductive base in a dust and liquid proof electronic connector is shown.

[0021] Figure 4 is along Figure 3 Internal view of the mid-DD line section.

[0022] Figure 5 is along Figure 3 Internal view cut along line EE.

[0023] Figure 6 4 is a plan view of a dust and liquid proof electronic connector according to a second embodiment of the present invention.

[0024] Figure 7 4 is a plan view of a dust and liquid proof electronic connector according to a third embodiment of the present invention.

[0025] Figure 8 is along Figure 7 Internal view cut along the midline FF.

[0026] Fig. 9 yes Figure 8 Internal view of the needle shaft in . DETAILED DESCRIPTION

[0027] In order to explain the technical content and structural features of the present invention in detail, further description will be given below in combination with the implementation modes and the accompanying drawings.

[0028] See also Figure 1 and Figure 2 The dust-proof and liquid-proof electronic connector 100a of the first embodiment includes a needle shaft 10, a sealing ring 20, a conductive seat 30 and a reset member. Optionally, as an example, the reset member is a spring 40; obviously, according to actual needs, the reset member can also be a magnet, but this is well known in the art, so it will not be repeated here.

[0029] Recombination Figure 4 and Figure 5The conductive seat body 30 has a receiving cavity 32 that penetrates the first end surface 31 of the conductive seat body 30. The receiving cavity 32 includes a first cavity 321, a second cavity 322 and a third cavity 323 in sequence along the direction of penetrating the first end surface 31 of the conductive seat body 30 (see the direction indicated by arrow A). The third cavity 323 is exposed to the first end surface 31 of the conductive seat body 30, and the second cavity 322 is eccentrically arranged relative to the first cavity 321. Figure 2 , Figure 4 and Figure 5 shown; Figure 4 and Figure 5 In the figure, the center line of the second cavity 322 is indicated by the reference numeral C2, and the center line of the first cavity 321 is indicated by the reference numeral C1. The center line C1 of the first cavity 321 is also parallel to the center line C2 of the second cavity 322. Optionally, Figure 5 As an example, the center line of the third cavity 323 coincides with the center line C1 of the first cavity 321. This design makes the gap between the needle shaft 10 and the third cavity 323 as consistent as possible at all locations in the circumferential direction, so that the gap between the needle shaft 10 and the third cavity 322 can be made smaller; obviously, according to actual needs, the center line of the third cavity 323 and the center line C1 of the first cavity 321 can also be in other relationships, so it is not necessary to use Figure 5 Limits shown.

[0030] At the same time, the needle shaft 10 can be slidably assembled in the first cavity 321 to meet the need of the needle shaft 10 sliding on the conductive seat body 30; since the needle shaft 10 needs to slide on the conductive seat body 30, the fit between the needle shaft 10 and the first cavity 321 is a clearance fit, and the size of the clearance fit is well known in the art, so it will not be repeated here; in addition, the first end 11 of the needle shaft 10 is also exposed to the outside from the third cavity 323 to meet the need of electrical contact between the needle shaft 10 and external electronic components.

[0031] Furthermore, the sealing ring 20 is mounted on the needle shaft 10 and assembled in the second cavity 322 to meet the need of the sealing ring 20 to seal between the needle shaft 10 and the first cavity 321, and prevent sweat, water, dust and other impurities from entering the first cavity 321; and the cavity side wall 3221 of the second cavity 322 is tilted relative to the center line C1 of the first cavity 321 by the sealing ring 20 pushing the needle shaft 10 to abut against the cavity side wall 3211 of the first cavity 321, as shown in the state Figure 2 shown.

[0032] The spring 40 is located in the first cavity 321, and the spring 40 is also in contact between the needle shaft 10 and the conductive seat body 30. The spring 40 allows the needle shaft 10 to slide along the receiving cavity 32 in the direction of the first end surface 31 of the conductive seat body 30. Therefore, when the needle shaft 10 slides into the conductive seat body 30, the spring 40 is compressed by the needle shaft 10, and the compressed spring 40 provides a restoring elastic force when the needle shaft 10 slides out of the conductive seat body 30, thereby ensuring the reliability of the close contact between the needle shaft 10 and the external electronic components. It should be noted that Figure 2 In the figure, the position indicated by the reference numeral C3 is the axis of the needle shaft 10, and the angle at which the axis C3 is inclined relative to the center line C1 of the first cavity 321 is the angle at which the needle shaft 10 is inclined relative to the center line C1 of the first cavity 321. More specifically, as follows:

[0033] like Figure 2 As shown, as an example, the inner side 21 of the sealing ring 20 is slidably connected to the needle shaft 10, and the outer side 22 of the sealing ring 20 is fixedly connected to the conductive seat body 30, so that the needle shaft 10 will not drive the sealing ring 20 to slide during the sliding and retracting process; obviously, according to actual needs, the inner side 21 of the sealing ring 20 can also be fixedly connected to the needle shaft 10 and the outer side 22 can be slidably connected to the conductive seat body 30. This design allows the sealing ring 20 to slide with the needle shaft 10, but can also achieve the purpose of the sealing ring 20 sealing the needle shaft 10 and the first cavity 321. Specifically, combined with Figure 2 , Figure 4 and Figure 5 As an example, the diameter D2 of the second cavity 322 is larger than the diameter D1 of the first cavity 321 and the diameter D3 of the third cavity 323. At this time, the outer side 22 of the sealing ring 20 is also sandwiched between the two cavity end surfaces 3222 of the second cavity 322. Figure 2 Such a design simplifies the fixing structure of the conductive seat 30 to the sealing ring 20. More specifically, Figure 1 , Figure 2 , Figure 3 and Figure 5 As an example, the conductive seat body 30 includes a needle tube 30a and a sleeve 30b fixedly sleeved on the needle tube 30a, a first cavity 321 is formed in the needle tube 30a, the first cavity 321 also penetrates the first end face of the needle tube 30a, the first end face of the needle tube 30a forms a cavity end face 3222 of the second cavity 322; the second cavity 322 and the third cavity 323 are formed in the sleeve 30b, the first end face of the sleeve 30b forms the first end face 31 of the conductive seat body 30; therefore, with the conductive seat body 30 including the sleeve 30b and the needle tube 30a, the assembly operation of the needle shaft 10, the spring 40 and the sealing ring 20 on the conductive seat body 30 is more convenient, and the structure in which the outer side 22 of the sealing ring 20 is fixedly connected to the conductive seat body 30 is simplified.

[0034] In order to improve the convenience of assembling and fixing the sleeve 30b and the needle tube 30a, Figure 2 and Figure 5 As an example, a fixing lug 34 is provided on the side wall of the needle tube 30a, and an engaging groove 35 which is interference fit with the fixing lug 34 is provided on the side wall of the sleeve 30b, so that the sleeve 30b and the needle tube 30a are assembled together by interference fit by means of the interference fit between the fixing lug 34 and the engaging groove 35. Obviously, in other embodiments, the engaging groove 35 can be provided on the side wall of the needle tube 30a, and correspondingly, the fixing lug 34 can be provided on the side wall of the sleeve 30b, so that the sleeve 30b and the needle tube 30a can be assembled together by interference fit. Therefore, it is not necessary to use the above-mentioned embodiment. Figure 2 and Figure 5 Limits shown.

[0035] like Figure 2 As shown, as an example, the needle shaft 10 is provided with an assembly cavity 13 penetrating the second end surface 12 of the needle shaft 10, and the first end 41 of the spring 40 is placed in the assembly cavity 13; such a design can shorten the total assembly length of the spring 40 and the needle shaft 10, and accordingly shorten the total assembly length of the dust-proof and liquid-proof electronic connector 100a of the first embodiment; optionally, Figure 2 As an example, the assembly cavity 13 also extends to the first end 11 of the needle shaft 10. This design can further shorten the total assembly length of the spring 40 and the needle shaft 10, thereby effectively shortening the total assembly length of the dustproof and liquidproof electronic connector 100a of the first embodiment, so that the dustproof and liquidproof electronic connector 100a of the first embodiment can adapt to smaller occasions.

[0036] Combination Figure 2 , Figure 4 and Figure 5 As an example, the first cavity 321, the second cavity 322 and the third cavity 323 are all circular to match the needle shaft 10 with a circular outer contour in cross section and the sealing ring 20 with a circular ring-shaped cross section; obviously, according to actual needs, the first cavity 321, the second cavity 322 and the third cavity 323 can also be regular polygons or ellipses to match the needle shaft 10 with a regular polygonal or elliptical outer contour in cross section and the sealing ring 20 with an elliptical ring or a regular polygonal ring-shaped cross section.

[0037] See also Figure 6 The structures of the dustproof and liquidproof electronic connector 100b of the second embodiment and the dustproof and liquidproof electronic connector 100a of the first embodiment are basically the same, and the differences are as follows:

[0038] In the dust and liquid proof electronic connector 100b of the second embodiment, it further comprises an intermediate conductive member 50 disposed in the first cavity 321, and a second end 51 of the intermediate conductive member 50 is connected to the conductive base 30, for example but not limited to Figure 6 Obviously, according to actual needs, the second end 51 of the intermediate conductive member 50 can also be inserted into the conductive seat body 30 to achieve a fixed connection between the second end 51 of the intermediate conductive member 50 and the conductive seat body 30. Figure 6 The first end 52 of the intermediate conductive member 50 is placed in the assembly cavity 13, and the second end 42 of the spring 40 abuts against the intermediate conductive member 50; by means of the intermediate conductive member 50 with the first end 52 placed in the assembly cavity 13 of the needle shaft 10, the size of the dustproof and liquidproof electronic connector 100b of the second embodiment can be shortened while increasing the conductive path to improve the contact stability, so that the dustproof and liquidproof electronic connector 100b of the second embodiment can be adapted to the occasions of small size and high frequency vibration. Specifically, Figure 6 As an example, the intermediate conductive member 50 is provided with a receiving cavity 53 penetrating the first end surface 521 of the intermediate conductive member 50, the receiving cavity 53 is communicated with the assembly cavity 13, and the second end 42 of the spring 40 is placed in the receiving cavity 53; such a design can further shorten the size of the dustproof and liquidproof electronic connector 100b of the second embodiment, so that the dustproof and liquidproof electronic connector 100b of the second embodiment can be adapted to smaller occasions. More specifically, in Figure 6 As an example, the outer contour of the cross section of the intermediate conductive member 50 is circular to facilitate the processing and manufacturing of the intermediate conductive member 50; obviously, according to actual needs, the outer contour of the cross section of the intermediate conductive member 50 can also be a regular polygon, an ellipse, etc.

[0039] In the dust and liquid proof electronic connector 100 a of the first embodiment, the intermediate conductive member 50 is not included.

[0040] Apart from the above differences, the other two are the same, so I will not go into details here.

[0041] See also Figures 7 to 9 The dustproof and liquidproof electronic connector 100c of the third embodiment has substantially the same structure as the dustproof and liquidproof electronic connector 100a of the first embodiment, and the differences are as follows:

[0042] In the dust-proof and liquid-proof electronic connector 100c of the third embodiment, the second end face 12 of the needle shaft 10' has an inclined surface 121 inclined relative to the axis C3 of the needle shaft 10', and the first end 41 of the spring 40 abuts against the inclined surface 121. When the total assembled length of the needle shaft 10' and the spring 40 is large, the inclined surface 121 can be used to increase the lateral force, thereby improving the contact stability between the needle shaft 10 and the conductive seat 30, which is suitable for vibration-resistant occasions.

[0043] In the dust-proof and liquid-proof electronic connector 100a of the first embodiment, since the needle shaft 10 is provided with an assembly cavity 13 for placing the first end 41 of the spring 40, the second end surface 12 of the needle shaft 10 no longer abuts against the first end 41 of the spring 41. Correspondingly, the second end surface 12 of the needle shaft 10 may not have the aforementioned inclined surface 121.

[0044] Apart from the above differences, the other two are the same, so I will not go into details here.

[0045] Compared with the prior art, by virtue of the eccentric arrangement of the second cavity 322 relative to the first cavity 321, the cavity side wall 3221 of the second cavity 322 is pushed by the sealing ring 20 to tilt the needle shaft 10 (10') relative to the center line C1 of the first cavity 321 and to collide with the cavity side wall 3211 of the first cavity 321. Specifically, since the cavity side wall 3221 of the second cavity 322 is eccentric relative to the first cavity 321, the sealing ring 20 is subjected to uneven force, and the needle shaft 10 (10') is in a clearance fit with the first cavity 312, the sealing ring 20 subjected to uneven force drives the needle shaft 10 (10') to deflect until the needle shaft 10 (10') collide with the cavity side wall 3211 of the first cavity 321, thereby providing a greater lateral force, so that the contact stability between the needle shaft 10 (10') and the conductive seat body 30 is better and suitable for dust-proof, liquid-proof and vibration-resistant occasions.

[0046] It should be supplemented that the dustproof and liquid-proof electronic connector 100a (100b, 100c) of the present invention can be applied to wearable products such as watches, bracelets, Bluetooth headsets and VR, and when the dustproof and liquid-proof electronic connector 100a (100b, 100c) of the present invention is used, its needle shaft 10 is connected to an electronic device, and its conductive seat 30 (specifically the needle tube 30a) is connected to another electronic device.

[0047] The above disclosure is only a preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A dustproof and liquidproof electronic connector, comprising a needle shaft, a sealing ring, a conductive seat and a reset member, wherein the conductive seat has a receiving cavity penetrating the first end surface of the conductive seat, characterized in that: The receiving cavity includes a first cavity, a second cavity and a third cavity in sequence along the direction of the first end face of the conductive seat body, the third cavity is exposed at the first end face of the conductive seat body, and the second cavity is eccentrically arranged relative to the first cavity; the needle shaft is slidably assembled in the first cavity, and the first end of the needle shaft is also exposed to the outside from the third cavity; the sealing ring is sleeved on the needle shaft and assembled in the second cavity, and the cavity side wall of the second cavity is pushed by the sealing ring to tilt the needle shaft relative to the center line of the first cavity and abut against the cavity side wall of the first cavity, and the reset member allows the needle shaft to slide along the direction of the receiving cavity passing through the first end face of the conductive seat body.

2. The dust-proof and liquid-proof electronic connector according to claim 1, characterized in that: The outer side of the sealing ring is also fixedly connected to the conductive seat body, and the inner side of the sealing ring is also slidably connected to the needle shaft; or, the outer side of the sealing ring is also slidably connected to the conductive seat body, and the inner side of the sealing ring is also fixedly connected to the needle shaft.

3. The dust-proof and liquid-proof electronic connector according to claim 2, characterized in that: The diameter of the second cavity is larger than the diameters of the first cavity and the third cavity, and the outer side of the sealing ring is sandwiched between the two cavity end surfaces of the second cavity.

4. The dust-proof and liquid-proof electronic connector according to claim 1, characterized in that: The reset element is a spring located in the first cavity, and the spring abuts between the needle shaft and the conductive seat.

5. The dust-proof and liquid-proof electronic connector according to claim 4, characterized in that: The needle shaft is provided with an assembly cavity which passes through the second end surface of the needle shaft, and the first end of the spring is placed in the assembly cavity.

6. The dust-proof and liquid-proof electronic connector according to claim 5, characterized in that: It also includes an intermediate conductive member arranged in the first cavity, the second end of the intermediate conductive member is connected to the conductive seat, the first end of the intermediate conductive member is placed in the assembly cavity, and the second end of the spring abuts against the intermediate conductive member.

7. The dust-proof and liquid-proof electronic connector according to claim 6, characterized in that: The intermediate conductive member is provided with a receiving cavity which passes through the first end surface of the intermediate conductive member, the receiving cavity is communicated with the assembly cavity, and the second end of the spring is placed in the receiving cavity.

8. The dust-proof and liquid-proof electronic connector according to claim 4, characterized in that: The second end surface of the needle shaft has an inclined surface inclined relative to the axis of the needle shaft, and the first end of the spring abuts against the inclined surface.

9. The electronic connector according to claim 3, characterized in that: The conductive seat body includes a needle tube and a sleeve fixedly mounted on the needle tube, the first cavity is formed in the needle tube, and the first cavity also passes through the first end surface of the needle tube, the second cavity and the third cavity are formed in the sleeve, the first end surface of the sleeve forms the first end surface of the conductive seat body, and the first end surface of the needle tube forms a cavity end surface of the second cavity.

10. The dust-proof and liquid-proof electronic connector according to claim 9, characterized in that: A fixing lug is arranged on the side wall of one of the sleeve and the needle tube, and an engaging groove which is interference-fitted with the fixing lug is arranged on the side wall of the other of the sleeve and the needle tube.

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