Dustproof and liquid-proof electronic connector
By setting an eccentric second cavity in the conductive base of the electronic connector, the seal ring pushes the needle shaft to provide greater lateral force, solving the problem of poor contact stability of existing electrical connectors in anti-vibration occasions, and achieving more stable contact and dust-proof and liquid-proof effects.
Patent Information
- Application Number
- CN202422216098.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-09-10
AI Technical Summary
The existing electrical connectors have poor contact stability in vibration-resistant occasions and cannot effectively prevent the entry of liquid and dust.
A dust-proof and liquid-proof electronic connector is designed, by providing an eccentric second cavity in the conductive base body, the sealing ring pushes the needle shaft and inclines with respect to the center line of the first cavity, thereby providing greater lateral force and enhancing the contact stability between the needle shaft and the conductive base body.
In dust-proof and liquid-proof vibration-proof situations, more stable contact between the needle shaft and the conductive base is achieved, and is suitable for anti-vibration environments.
Smart Images
Figure CN223052464U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electrical connection, in particular to a dust-proof and liquid-proof electronic connector. Background Art
[0002] As is well known, electrical connectors are widely used in electronic products to achieve electrical connection between electronic components through electrical connectors, meeting the requirements of charging / discharging or data transmission.
[0003] Among them, for existing electrical connectors that prevent impurities such as liquid and dust from entering, it includes a pin shaft, a conductive seat body, a sealing ring and a spring. The conductive seat body has a receiving cavity penetrating the first end face of the conductive seat body. The pin shaft is slidably assembled in the receiving cavity, and the first end of the pin shaft also extends out from the first end face of the conductive seat body. The sealing ring is assembled in the receiving cavity and sleeved on the pin shaft, and the sealing ring also abuts and cooperates with the cavity side wall of the receiving cavity. The spring is located in the receiving cavity and abuts against the pin shaft and the conductive seat body.
[0004] When the electrical connector operates, there is a defect of poor contact stability between the pin shaft and the conductive seat body, so that the existing electrical connector cannot be adapted to vibration-resistant 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 defects. Summary of the Utility Model
[0006] The purpose of the utility model is to provide a dust-proof and liquid-proof electronic connector, which can provide a greater lateral force, so that the contact stability between the pin shaft and the conductive seat body is better and it is adapted to the dust-proof, liquid-proof and vibration-resistant occasions.
[0007] To achieve the above purpose, the dust-proof and liquid-proof electronic connector of the utility model includes a pin shaft, a sealing ring, a conductive seat body and a reset member. The conductive seat body has a receiving cavity penetrating the first end face of the conductive seat body. The receiving cavity sequentially includes a first cavity, a second cavity and a third cavity along the direction penetrating the first end face of the conductive seat body. The third cavity is exposed on the first end face of the conductive seat body, and the second cavity is eccentrically arranged relative to the first cavity. The pin shaft is slidably assembled in the first cavity, and the first end of the pin shaft also exposes outwards from the third cavity. The sealing ring is sleeved on the pin shaft and assembled in the second cavity. The cavity side wall of the second cavity pushes the pin shaft to be inclined relative to the center line of the first cavity through the sealing ring and abuts against the cavity side wall of the first cavity. The reset member enables the pin shaft to slide along the direction in which the receiving cavity penetrates the first end face of the conductive seat body.
[0008] Compared with the prior art, by means of the eccentric arrangement of the second cavity relative to the first cavity, the cavity side wall of the second cavity abuts against the cavity side wall of the first cavity by pushing the needle shaft obliquely relative to the center line of the first cavity through the sealing ring, thereby providing a greater lateral force and making the contact stability between the needle shaft and the conductive seat body better, so as to adapt to the anti-vibration occasions of dust and liquid prevention.
[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 cavity diameter of the second cavity is respectively larger than the cavity diameters of the first cavity and the third cavity, and the outer side of the sealing ring is also clamped between the two cavity end faces of the second cavity.
[0011] Preferably, the dust and liquid-proof electronic connector of the present invention further includes a spring located in the first cavity, and the spring abuts between the needle shaft and the conductive seat body.
[0012] Preferably, an assembly cavity is formed on the needle shaft and penetrates through the second end face of the needle shaft, and the first end of the spring is placed in the assembly cavity.
[0013] Preferably, the dust and liquid-proof electronic connector of the present invention further includes an intermediate conductive member disposed in the first cavity, the second end of the intermediate conductive member is connected to the conductive seat body, 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.
[0014] Preferably, a receiving cavity is formed on the intermediate conductive member and penetrates through the first end face 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.
[0015] Preferably, the second end face of the needle shaft has an inclined surface inclined relative to the axis line of the needle shaft, and the first end of the spring abuts against the inclined surface.
[0016] Preferably, the conductive seat body includes a needle tube and a sleeve fixedly sleeved on the needle tube, the first cavity is formed in the needle tube, the first cavity also penetrates 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 one cavity end face of the second cavity.
[0017] Preferably, one of the side walls of the sleeve and the needle tube is provided with a fixed lug, and the other of the side walls of the sleeve and the needle tube is provided with an engaging groove that is in interference fit with the fixed lug. Description of the Drawings
[0018] Figure 1 It is a plan view of the dust-proof and liquid-proof electronic connector according to the first embodiment of the present utility model.
[0019] Figure 2 It is along Figure 1 The internal view cut along the line B-B in
[0020] Figure 3 It is Figure 1 The plan view of the conductive seat body in the dust-proof and liquid-proof electronic connector shown in
[0021] Figure 4 It is along Figure 3 The internal view cut along the line D-D in
[0022] Figure 5 It is along Figure 3 The internal view cut along the line E-E in
[0023] Figure 6 It is a plan view of the dust-proof and liquid-proof electronic connector according to the second embodiment of the present utility model.
[0024] Figure 7 It is a plan view of the dust-proof and liquid-proof electronic connector according to the third embodiment of the present utility model.
[0025] Figure 8 It is along Figure 7 The internal view cut along the line F-F in
[0026] Figure 9 It is Figure 8 The internal view of the pin shaft in Specific embodiments
[0027] In order to elaborate in detail the technical content and structural features of the present utility model, the following further description is made in conjunction with the embodiments and with reference to the drawings.
[0028] Please refer to Figure 1 and Figure 2 The dust-proof and liquid-proof electronic connector 100a of the first embodiment includes a pin shaft 10, a sealing ring 20, a conductive seat body 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 elaborated herein.
[0029] Combined with Figure 4 and Figure 5, the conductive base 30 has a receiving cavity 32 that penetrates the first end face 31 of the conductive base 30. The receiving cavity 32 sequentially includes a first cavity 321, a second cavity 322, and a third cavity 323 along the direction (see the direction indicated by arrow A) of penetrating the first end face 31 of the conductive base 30. The third cavity 323 is exposed on the first end face 31 of the conductive base 30, and the second cavity 322 is eccentrically arranged relative to the first cavity 321. The state is shown in Figure 2 , Figure 4 and Figure 5 as shown; in Figure 4 and Figure 5 , the position indicated by label C2 is the center line of the second cavity 322, and the position indicated by label C1 is the center line of the first cavity 321. The center line C1 of the first cavity 321 is also parallel to the center line C2 of the second cavity 322; optionally, in Figure 5 , as an example, the center line of the third cavity 323 coincides with the center line C1 of the first cavity 321. Such a design makes the gap between the needle shaft 10 and the third cavity 323 as consistent as possible 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 other relationships, so it is not limited to Figure 5 as shown.
[0030] At the same time, the needle shaft 10 is slidably assembled in the first cavity 321 to meet the need for the needle shaft 10 to slide on the conductive base 30; since the needle shaft 10 needs to slide on the conductive base 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 elaborated here; in addition, the first end 11 of the needle shaft 10 also exposes to the outside from the third cavity 323 to meet the need for the needle shaft 10 to make electrical contact with external electronic components.
[0031] Furthermore, the sealing ring 20 is sleeved on the needle shaft 10 and assembled in the second cavity 322 to meet the need for the sealing ring 20 to seal between the needle shaft 10 and the first cavity 321, preventing external impurities such as sweat, water, and dust from entering the first cavity 321; and the cavity side wall 3221 of the second cavity 322 pushes the needle shaft 10 to be inclined relative to the center line C1 of the first cavity 321 through the sealing ring 20 and abuts against the cavity side wall 3211 of the first cavity 321. The state is shown in Figure 2 as shown.
[0032] The spring 40 is located in the first cavity 321. The spring 40 also abuts between the needle shaft 10 and the conductive base 30. The spring 40 allows the needle shaft 10 to slide along the direction of penetrating the first end face 31 of the conductive base 30 through the receiving cavity 32. Therefore, during the process of the needle shaft 10 sliding and retracting into the conductive base 30, the spring 40 is compressed by the needle shaft 10. The compressed spring 40 provides a restoring elastic force during the process of the needle shaft 10 sliding and protruding from the conductive base 30, thus ensuring the reliability of the close contact between the needle shaft 10 and external electronic components. It should be noted that in Figure 2 the position indicated by the reference numeral C3 is the axis line of the needle shaft 10, and the angle at which the axis line 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] As Figure 2 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 base 30, so that the needle shaft 10 does not drive the sealing ring 20 to slide during the process of sliding and telescoping; 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 base 30. Such a design enables the sealing ring 20 to slide together with the needle shaft 10, but can also achieve the purpose of sealing between the needle shaft 10 and the first cavity 321. Specifically, in combination with Figure 2 、 Figure 4 and Figure 5 , as an example, the cavity diameter D2 of the second cavity 322 is respectively larger than the cavity diameter D1 of the first cavity 321 and the cavity diameter D3 of the third cavity 323. At this time, the outer side 22 of the sealing ring 20 is also clamped between the two cavity end faces 3222 of the second cavity 322, and the state is shown in Figure 2 ; such a design simplifies the fixing structure of the conductive base 30 for the sealing ring 20. More specifically, in Figure 1 、 Figure 2 、 Figure 3 and Figure 5 , as an example, the conductive base 30 includes a needle tube 30a and a sleeve 30b fixedly sleeved on the needle tube 30a. The first cavity 321 is formed inside the needle tube 30a, and 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 one cavity end face 3222 of the second cavity 322; the second cavity 322 and the third cavity 323 are formed inside the sleeve 30b, and the first end face of the sleeve 30b forms the first end face 31 of the conductive base 30; therefore, by virtue of the conductive base 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 base 30 is more convenient, and the structure of the outer side 22 of the sealing ring 20 fixedly connected by the conductive base 30 is simplified.
[0034] Among them, in order to improve the convenience of assembling and fixing the sleeve 30b and the syringe barrel 30a, in Figure 2 and Figure 5 as an example, a fixing lug 34 is provided on the side wall of the syringe barrel 30a, and an engaging groove 35 that is in interference fit with the fixing lug 34 is provided on the side wall of the sleeve 30b. By means of the interference fit between the fixing lug 34 and the engaging groove 35, the sleeve 30b and the syringe barrel 30a are assembled together through interference fit. Obviously, in other embodiments, an engaging groove 35 may be provided on the side wall of the syringe barrel 30a, and correspondingly, a fixing lug 34 may be provided on the side wall of the sleeve 30b, which can also achieve the purpose of assembling the sleeve 30b and the syringe barrel 30a together through interference fit. Therefore, it is not limited by Figure 2 and Figure 5 shown.
[0035] As Figure 2 shown, as an example, an assembly cavity 13 is formed on the needle shaft 10 and penetrates through the second end face 12 of the needle shaft 10; 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 correspondingly, shorten the total assembly length of the dust-proof and liquid-proof electronic connector 100a of the first embodiment. Optionally, in Figure 2 as an example, the assembly cavity 13 further extends to the first end 11 of the needle shaft 10. Such a design can further shorten the total assembly length of the spring 40 and the needle shaft 10, and thus effectively shorten the total assembly length of the dust-proof and liquid-proof electronic connector 100a of the first embodiment, so that the dust-proof and liquid-proof electronic connector 100a of the first embodiment can be adapted to smaller-sized occasions.
[0036] Combined with 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 cross-sectional outer contour and the sealing ring 20 with a circular cross-sectional contour. Obviously, according to actual needs, the first cavity 321, the second cavity 322, and the third cavity 323 may also be regular polygons or ellipses to match the needle shaft 10 with a regular polygon or elliptical cross-sectional outer contour and the sealing ring 20 with an elliptical or regular polygon cross-sectional contour.
[0037] Please refer to Figure 6 , the structures of the dust-proof and liquid-proof electronic connector 100b of the second embodiment and the dust-proof and liquid-proof electronic connector 100a of the first embodiment are basically the same, and the differences are as follows:
[0038] In the dust-proof and liquid-proof electronic connector 100b of the second embodiment, it further includes an intermediate conductive member 50 disposed in the first cavity 321. The second end 51 of the intermediate conductive member 50 is connected to the conductive seat body 30, for example, but not limited to Figure 6 the abutment in Figure 6 . Obviously, according to actual needs, the second end 51 of the intermediate conductive member 50 can also be inserted through the conductive seat body 30 to achieve the fixed connection between the second end 51 of the intermediate conductive member 50 and the conductive seat body 30. Therefore, it is not limited to Figure 6 shown; 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, while increasing the conduction path to improve the contact stability, the size of the dust-proof and liquid-proof electronic connector 100b of the second embodiment can also be shortened, so that the dust-proof and liquid-proof electronic connector 100b of the second embodiment can be adapted to the occasions with small size and high-frequency vibration. Specifically, in Figure 6 , as an example, a receiving cavity 53 is formed in the intermediate conductive member 50 and penetrates through the first end face 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 dust-proof and liquid-proof electronic connector 100b of the second embodiment, so that the dust-proof and liquid-proof electronic connector 100b of the second embodiment can be adapted to the occasions with smaller size. More specifically, in
[0039] , as an example, the outer contour of the cross-section of the intermediate conductive member 50 is circular, which is convenient for 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.
[0040] In the dust-proof and liquid-proof electronic connector 100a of the first embodiment, it does not include the intermediate conductive member 50.
[0041] Except for the above differences, the other two are the same, so they will not be elaborated here. Figures 7 to 9 , please refer to
[0042] The structures of the dust-proof and liquid-proof electronic connector 100c of the third embodiment and the dust-proof and liquid-proof electronic connector 100a of the first embodiment are basically the same. The differences are as follows:
[0043] In the dust-proof and liquid-proof electronic connector 100a of the first embodiment, since the assembly cavity 13 for placing the first end 41 of the spring 40 is provided on the needle shaft 10, the second end face 12 of the needle shaft 10 no longer abuts against the first end 41 of the spring 41. Correspondingly, the second end face 12 of the needle shaft 10 may not have the aforementioned inclined surface 121.
[0044] Except for the above differences, the other two are the same, so they will not be elaborated 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 pushes the needle shaft 10 (10`) to be inclined relative to the center line C1 of the first cavity 321 through the sealing ring 20 and abuts against the cavity side wall 3211 of the first cavity 321. Specifically, since the cavity side wall 3221 of the second cavity 322 that is eccentric relative to the first cavity 321 causes the sealing ring 20 to be unevenly stressed, and the needle shaft 10 (10`) is in clearance fit with the first cavity 312, the sealing ring 20 with uneven stress drives the needle shaft 10 (10`) to deflect until the needle shaft 10 (10`) abuts against the cavity side wall 3211 of the first cavity 321, thereby providing a greater lateral force and making the contact stability between the needle shaft 10 (10`) and the conductive base 30 better and suitable for the anti-vibration occasions of dust-proof and liquid-proof.
[0046] It should be further noted that the dust-proof and liquid-proof electronic connectors 100a (100b, 100c) of the present invention can be applied to wearable products such as watches, bracelets, Bluetooth headsets, and VR. When the dust-proof and liquid-proof electronic connectors 100a (100b, 100c) of the present invention are in use, their needle shafts 10 are connected to an electronic device, and their conductive bases 30 (specifically, the needle tubes 30a) are connected to another electronic device.
[0047] The above-disclosed are only the preferred examples of the present invention. Of course, the scope of the rights of the present invention cannot be limited thereby. Therefore, the 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.