Current-resistant connector

Abstract

The utility model discloses a current-resistant connector, which comprises a pin shaft, a sealing ring, a conductive seat body, a spring and a conductive shunt body. A containing cavity penetrating through the head end face of the guide head seat body is formed in the conductive seat body. The needle shaft is assembled in the containing cavity and can slide in the penetrating direction of the containing cavity and the direction opposite to the penetrating direction. And the sealing ring is sleeved between the needle shaft and the conductive seat body. The conductive flow divider is connected with the conductive seat body, and the conductive flow divider is also suspended in the accommodating cavity. The spring is arranged in the accommodating cavity, the spring is sleeved on the conductive flow divider, and the spring is elastically propped against the needle shaft and the conductive flow divider; or, the spring is elastically abutted against the pin shaft and the conductive seat body. Therefore, the spring is shunted by means of the conductive shunting body, the phenomenon that the spring is burnt due to overlarge current is prevented, and the current resistance of the current resistance connector is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical connection, in particular to a current-resistant connector for use in situations where sweat, water, dust and other impurities need to be prevented from entering. Background Art

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

[0003] Among them, an existing electrical connector designed to prevent the ingress of impurities such as sweat, water, and dust comprises a pin shaft, a conductive base, a sealing ring, and a spring. The conductive base has a receiving cavity extending through the end face of the conductive base. The pin shaft is slidably mounted within the cavity, with the tip of the pin shaft extending from the end face of the conductive base. The sealing ring is mounted within the cavity and extends over the pin shaft. The sealing ring also abuts against the sidewalls of the cavity to prevent impurities such as sweat, water, and dust from entering the cavity and causing a short circuit. The spring is located within the cavity and abuts against the pin shaft and the conductive base.

[0004] Therefore, during operation, the current acting on the needle shaft is mainly transmitted from the needle shaft to the conductive seat body, and a part of it is transmitted to the conductive seat body through the spring; when the current acting on the needle shaft becomes larger and larger, the part of the current passing through the spring also becomes larger and larger accordingly, which will cause the spring to burn due to excessive current.

[0005] Therefore, there is an urgent need for a current-resistant connector to overcome one or more of the above-mentioned drawbacks. Utility Model Content

[0006] The utility model aims to provide a current-resistant connector which can prevent the spring from burning due to excessive current.

[0007] In order to achieve the above-mentioned purpose, the current-resistant connector of the present invention includes a needle shaft, a sealing ring, a conductive seat, a spring and a conductive shunt. The conductive seat has a receiving cavity that penetrates the head end face of the guide head seat, and the needle shaft is assembled in the receiving cavity. The needle shaft can slide along the penetration direction of the receiving cavity and the direction opposite to the penetration direction. The sealing ring is sleeved between the needle shaft and the conductive seat. The conductive shunt is connected to the conductive seat, and the conductive shunt is also suspended in the accommodating cavity. The spring is placed in the receiving cavity, the spring is sleeved on the conductive shunt, and the spring elastically abuts against both the needle shaft and the conductive shunt; or, the spring elastically abuts against both the needle shaft and the conductive seat.

[0008] Compared with the prior art, with the help of a "conductive shunt body connected to the conductive seat and suspended in the accommodating cavity" and a "spring sleeved on the conductive shunt body, the spring elastically abuts against both the needle shaft and the conductive shunt body; or, the spring elastically abuts against both the needle shaft and the conductive seat body", the conductive shunt body shunts the current transmitted from the needle shaft to the spring, preventing the spring from burning due to excessive current, thereby improving the current-resistant capability of the current-resistant connector of the present invention.

[0009] Preferably, the conductive shunt body is provided with an assembly cavity penetrating the end face of the head end thereof, and the tail end of the spring extends into the assembly cavity.

[0010] Preferably, the spring is sheathed on the conductive shunt.

[0011] Preferably, a built-in cavity is provided in the needle shaft and passes through the tail end surface of the needle shaft, and the head end of the spring extends into the built-in cavity.

[0012] Preferably, the built-in cavity also extends to the head end of the needle shaft.

[0013] Preferably, the head end of the conductive shunt further extends into the built-in cavity.

[0014] Preferably, the conductive seat body further comprises a sleeve cavity penetrating the tail end face of the guide head seat body, the sleeve cavity is communicated with the receiving cavity, and the tail end of the conductive shunt is sleeved in the sleeve cavity in an interference fit.

[0015] Preferably, the conductive seat includes a needle tube and a sleeve fixedly mounted on the needle tube; the accommodating cavity includes a first cavity, a second cavity and a third cavity connected in sequence along its penetration direction, the first cavity is located in the needle tube, the second cavity and the third cavity are located in the sleeve, and the cavity diameter of the second cavity is larger than the cavity diameters of both the first cavity and the third cavity; the needle shaft is slidably engaged with the first cavity, and the head end of the needle shaft passes through the third cavity; the sealing ring is located in the second cavity, or the sealing ring is located in both the second cavity and the third cavity.

[0016] Preferably, the sealing ring is clamped by the end face of the head end of the needle tube and the end face of the second cavity opposite to the end face of the head end.

[0017] Preferably, the sealing ring includes a radially expandable ring and an axially expandable ring connected to the radially expandable ring, the axially expandable ring is extended into the third cavity with an interference fit, the radially expandable ring is located in the second cavity, and the radially expandable ring is also clamped by the end face of the needle tube head end and the end face of the second cavity opposite to the end face of the head end. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the current-resistant connector according to the first embodiment of the present utility model.

[0019] Figure 2 yes Figure 1 A plan view viewed from the direction opposite to that indicated by arrow A.

[0020] Figure 3 It is along Figure 2 Internal view cut along the midline BB.

[0021] Figure 4 yes Figure 3 Interior view with the needle shaft and spring hidden.

[0022] Figure 5 yes Figure 4 Internal view after hiding the conductive shunt and sealing ring.

[0023] Figure 6 yes Figure 5 Internal diagram of the conductive shunt in .

[0024] Figure 7 This is an internal diagram of a current-resistant connector according to a second embodiment of the present invention.

[0025] Figure 8 This is an internal diagram of a current-resistant connector according to a third embodiment of the present invention.

[0026] Figure 9 This is an internal diagram of a current-resistant connector according to a fourth embodiment of the present invention.

[0027] Figure 10 This is an internal diagram of a current-resistant connector according to a fifth embodiment of the present invention. DETAILED DESCRIPTION

[0028] In order to explain the technical content and structural features of the present invention in detail, the following is a further description in conjunction with the embodiments and the accompanying drawings.

[0029] See also Figures 1 to 3 The current-resistant connector 100a of the first embodiment includes a needle shaft 10, a sealing ring 20, a conductive base 30, a spring 40, and a conductive shunt 50. The conductive base 30 has a receiving cavity 32 that penetrates the head end surface 31 of the conductive base 30. The needle shaft 10 is assembled in the receiving cavity 32. The needle shaft 10 can slide along the penetrating direction of the receiving cavity 32 (see the direction indicated by arrow A) and the direction opposite to the penetrating direction to meet the need for the needle shaft 10 to telescopically slide relative to the conductive base 30; optionally, Figure 3 As an example, the sliding direction of the needle shaft 10 is the same as the axial direction of the needle shaft 10 .

[0030] At the same time, the sealing ring 20 is mounted between the needle shaft 10 and the conductive seat 30 to prevent sweat, water, dust and other impurities from entering the receiving cavity 32. Figure 3 In the embodiment, the cross section of the sealing ring 20 is circular, so as to facilitate the manufacturing and processing of the sealing ring 20; obviously, according to actual needs, the sealing ring 20 can also be other shapes, such as oval, or as Figure 7 The "L" shape in Figure 3 Limits shown.

[0031] Furthermore, the conductive shunt 50 is connected to the conductive base 30, so that the conductive shunt 50 is suspended in the accommodating cavity 32 under the support of the conductive base 30; Figure 5 and Figure 6 As an example, an embodiment of connecting the conductive shunt 50 to the conductive base 30 is as follows: the conductive base 30 further includes a sleeve cavity 34 that penetrates the tail end face 33 of the conductor base 30, and the sleeve cavity 34 is communicated with the receiving cavity 32. At this time, the tail end 54 of the conductive shunt 50 is sleeved in the sleeve cavity 34 with an interference fit. On the one hand, this design allows the conductive shunt 50 and the conductive base 30 to be processed separately, and on the other hand, the separately processed conductive shunt 50 can be easily and quickly assembled on the conductive base 30. Obviously, according to actual needs, the conductive shunt 50 and the conductive base 30 can also be made into an integrated structure, so it is not necessary to use Figure 3 Limits shown.

[0032] The spring 40 is placed within the receiving cavity 32, and the spring 30 is externally mounted on the conductive shunt 50. The spring 30 also elastically abuts against both the needle shaft 10 and the conductive base 30. Therefore, during operation, when the current acting on the needle shaft 10 passes through the spring 20, the inner wall of the spring 20 contacts the conductive shunt 50, allowing the conductive shunt 50 to shunt the spring 20. More specifically, as follows:

[0033] like Figure 3As shown, as an example, a built-in cavity 12 is provided in the needle shaft 10, which passes through the tail end face 11 of the needle shaft 10, and the head end 42 of the spring 40 extends into the built-in cavity 12. This design effectively shortens the total length of the needle shaft 10 and the spring 40 after assembly while meeting the stroke required for the needle shaft 10 to slide and retract, thereby making the current-resistant connector 100a of the first embodiment adaptable to smaller occasions; and because the spring 20 is sheathed on the conductive shunt 50, the current-resistant connector 100a of the first embodiment has good contact stability when it is smaller in size. In addition, the head end 53 of the conductive shunt 50 extends into the built-in cavity 12. This design increases the length of the conductive shunt 50 sheathed by the spring 40, thereby shortening the stroke of the spring 20 when the current is transmitted from the needle shaft 10 to the conductive shunt 50, so the shunt effect on the spring 20 is better. Specifically, in Figure 3 As an example, the built-in cavity 12 also extends to the head end 13 of the needle shaft 10 to effectively expand the length of the built-in cavity 12, thereby further shortening the total length of the needle shaft 10, the spring 40 and the conductive shunt 50 after assembly; In addition, the head end 53 of the conductive shunt 50 is hemispherical to effectively reduce the influence of the conductive shunt 50 on the expansion and contraction deformation of the spring 40. Obviously, according to actual needs, the head end 53 of the conductive shunt 50 can also be other shapes, so it is not used as an example. Figure 3 Limits shown.

[0034] Combine Figures 3 to 5 As an example, the conductive seat 30 includes a needle tube 30a and a sleeve 30b fixedly mounted on the needle tube 30a. With the cooperation of the needle tube 30a and the sleeve 30b, the conductive seat 30 can be manufactured by turning, thereby eliminating the traditional riveting process. As a result, the length of the current-resistant connector 100a of the first embodiment (in the direction indicated by arrow A) is made smaller, and the installation operation of the needle shaft 10, the spring 40 and the sealing ring 20 in the conductive seat 30 is also facilitated. At this time, the receiving cavity 32 includes a first cavity 321, a second cavity 322 and a third cavity 323 connected in sequence along its through direction; the first cavity 321 is located in the needle tube 30a, the second cavity 322 and the third cavity 323 are located in the sleeve 30b, and the cavity diameter D2 of the second cavity 323 is larger than the cavity diameter D1 (D3) of the first cavity 321 and the third cavity 323. See the state. Figure 5 As shown. The needle shaft 10 slides with the first cavity 321, and the first cavity 321 provides a guide for the reciprocating sliding of the needle shaft 10; the head end 13 of the needle shaft 10 passes through the third cavity 323 to better meet the need for the needle shaft 10 to abut against external electronic components. The sealing ring 20 is located in the second cavity 323, and the sealing ring 20 is clamped together by the head end face 30a1 of the needle tube 30a and the cavity end face 3221 opposite to the head end face 30a1 of the second cavity 322 to prevent the sealing ring 20 from axially moving in the needle shaft 10; optionally, Figure 3 and Figure 4 As an example, the sealing ring 20 is also abutted by the cavity side surface 3222 of the second cavity 322 , which effectively increases the sealing effect of the sealing ring 20 .

[0035] In order to improve the convenience of assembling and fixing the sleeve 30b and the needle tube 30a, Figures 3 to 5 As an example, a fixing lug 30a2 is provided on the side wall of the needle tube 30a, and an engaging groove 30b1 that is interference-fitted with the fixing lug 30a2 is provided on the side wall of the sleeve 30b. By means of the interference fit between the fixing lug 30a2 and the engaging groove 30b1, the sleeve 30b and the needle tube 30a are assembled together by interference fit. Obviously, in other embodiments, the engaging groove 30b1 can be provided on the side wall of the needle tube 30a, and correspondingly, the fixing lug 30a2 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, this is not the case. Figures 3 to 5 Limits shown.

[0036] See also Figure 7 The structures of the current-resistant connector 100b of the second embodiment are substantially the same as those of the current-resistant connector 100a of the first embodiment, with the following differences:

[0037] (1) In the current-resistant connector 100b of the second embodiment, the sealing ring 20' is located in both the second cavity 322 and the third cavity 323; while in the current-resistant connector 100a of the first embodiment, the sealing ring 20 is located in the second cavity 322.

[0038] (2) In the current-resistant connector 100b of the second embodiment, the sealing ring 20' includes a radially stretchable ring 21 and an axially stretchable ring 22 connected to the radially stretchable ring 21. The axially stretchable ring 22 is extended into the third cavity 323 with an interference fit, and the radially stretchable ring 21 is located in the second cavity 322. The radially stretchable ring 21 is also clamped together by the head end face 30a1 of the needle tube 30a and the cavity end face 3221 of the second cavity 322 opposite to the head end face 30a11; whereas in the current-resistant connector 100a of the first embodiment, the sealing ring 20 is clamped together by the head end face 30a1 of the needle tube 30a and the cavity end face 3221 of the second cavity 322 opposite to the head end face 30a1.

[0039] (3) In the current-resistant connector 100b of the second embodiment, the cross-section of the sealing ring 20' is L-shaped; while in the current-resistant connector 100a of the first embodiment, the cross-section of the sealing ring 20 is circular.

[0040] In the current-resistant connector 100 b of the second embodiment, the structure and shape of the sealing ring 20 ′ can enlarge the waterproof path and achieve higher waterproof performance.

[0041] Apart from the above differences, the other two are the same, so I will not go into details here.

[0042] See also Figure 8 The structures of the current-resistant connector 100c of the third embodiment are substantially the same as those of the current-resistant connector 100a of the first embodiment, with the following differences:

[0043] In the current-resistant connector 100 c of the third embodiment, the pin shaft 10 ′ does not have the internal cavity 12 ; whereas in the current-resistant connector 100 c of the first embodiment, the pin shaft 10 has the internal cavity 12 .

[0044] Among them, in the current-resistant connector 100c of the third embodiment, since the needle shaft 10' does not have a built-in cavity 12, when the reciprocating sliding stroke of the needle shaft 10' of the current-resistant connector 100c of the third embodiment and the needle shaft 10 of the current-resistant connector 100a of the first embodiment are the same, the lengths of the needle shaft 10', the spring 20 and the conductive shunt 30 of the current-resistant connector 100c of the third embodiment are shortened.

[0045] Apart from the above differences, the other two are the same, so I will not go into details here.

[0046] See also Figure 9 The structures of the current-resistant connector 100d of the fourth embodiment and the current-resistant connector 100c of the third embodiment are basically the same. The difference between the two lies in the conductive shunt, as follows:

[0047] In the fourth embodiment of the current-resistant connector 100d, the conductive shunt 50' has a mounting cavity 52 extending through its head end face 51. The tail end 41 of the spring 40 extends into the mounting cavity 52, achieving elastic contact between the spring 40 and the conductive shunt 50'. In the third embodiment of the current-resistant connector 100c, the conductive shunt 50 lacks the mounting cavity 52, so the spring 40 is sheathed around the conductive shunt 50 and elastically contacts the conductive base 30.

[0048] Among them, in the current-resistant connector 100d of the fourth embodiment, since the conductive shunt 50' is provided with an assembly cavity 52 for the tail end 41 of the spring 40 to extend into, the cross-sectional dimensions of the conductive shunt 50' are correspondingly made larger than the cross-sectional dimensions of the conductive shunt 50 in the current-resistant connector 100c of the third embodiment; in addition, since the tail end 41 of the spring 40 extends into the assembly cavity 52, during operation, when current passes through the spring 20, the outer wall of the spring 20 contacts the conductive shunt 50', so that the conductive shunt 50' can shunt the spring 20.

[0049] Apart from the above differences, the other two are the same, so I will not go into details here.

[0050] See also Figure 10 The structures of the current-resistant connector 100e of the fifth embodiment and the current-resistant connector 100a of the first embodiment are basically the same. The difference between the two lies in the conductive shunt, as follows:

[0051] In the fifth embodiment of the current-resistant connector 100e, the conductive shunt body 50' has a mounting cavity 52 extending through its head end face 51. The tail end 41 of the spring 40 extends into the mounting cavity 52, achieving elastic contact between the spring 40 and the conductive shunt body 50'. In the first embodiment of the current-resistant connector 100a, the conductive shunt body 50 lacks the mounting cavity 52, so the spring 40 is sheathed around the conductive shunt body 50 and elastically contacts the conductive base 30.

[0052] In the fifth embodiment of the current-resistant connector 100e, the conductive shunt body 50' defines a mounting cavity 52 into which the tail end 41 of the spring 40 extends. Accordingly, the cross-sectional dimensions of the conductive shunt body 50' are larger than those of the conductive shunt body 50 in the first embodiment of the current-resistant connector 100c. Furthermore, since the tail end 41 of the spring 40 extends into the mounting cavity 52, during operation, when current passes through the spring 20, the outer wall of the spring 20 contacts the conductive shunt body 50', allowing the conductive shunt body 50' to shunt the current from the spring 20. Furthermore, because the conductive shunt body 50' defines a mounting cavity 52 into which the tail end 41 of the spring 40 extends, while the reciprocating sliding stroke of the needle shaft 10 of the fifth embodiment of the current-resistant connector 100e is the same as that of the first embodiment of the current-resistant connector 100a, the lengths of the needle shaft 10, spring 20, and conductive shunt body 50' of the fifth embodiment of the current-resistant connector 100e are correspondingly shortened.

[0053] Apart from the above differences, the other two are the same, so I will not go into details here.

[0054] Compared with the prior art, with the help of a conductive shunt 50 (50') connected to the conductive seat 30 and suspended in the accommodating cavity 32 and a spring 20 mounted on the conductive shunt 50 (50'), the spring 20 elastically abuts against both the needle shaft 10 (10') and the conductive shunt 50 (50'); or, the spring 20 elastically abuts against both the needle shaft 10 (10') and the conductive seat 30. In this way, the conductive shunt 50 (50') shunts the current transmitted from the needle shaft 10 (10') to the spring 20, preventing the spring 20 from burning due to excessive current, thereby improving the current-resistant capability of the current-resistant connector 100a (100b, 100c, 100d, 100e) of the present invention.

[0055] It should be noted that the current-resistant connector 100a (100b, 100c, 100d, 100e) of the present invention can be applied to wearable products such as watches, bracelets, Bluetooth headsets, and VR devices. When the current-resistant connector 100a (100b, 100c, 100d, 100e) of the present invention is used, its needle shaft 10 (10') is connected to one electronic device, and its conductive base 30 (specifically, the needle tube 30a) is connected to another electronic device. In addition, the spring 20 is made of stainless steel, and the sealing ring 20 (20') is made of a high-temperature resistant material.

[0056] The above disclosure is only a preferred embodiment of the present invention and certainly cannot be used to limit the scope of rights 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 current-resistant connector, comprising a needle shaft, a sealing ring, a conductive base, and a spring, wherein the conductive base has a receiving cavity extending through the end face of the conductive base, the needle shaft is assembled in the receiving cavity, and the needle shaft can slide along the direction of penetration of the receiving cavity and in a direction opposite to the penetration direction, the sealing ring is sleeved between the needle shaft and the conductive base, and the spring is placed in the receiving cavity, characterized in that: The current-resistant connector also includes a conductive shunt connected to the conductive seat, and the conductive shunt is also suspended in the receiving cavity. The spring is mounted on the conductive shunt, and the spring elastically abuts against both the needle shaft and the conductive shunt; or, the spring elastically abuts against both the needle shaft and the conductive seat.

2. The current-resistant connector according to claim 1, characterized in that The conductive diverter is provided with an assembly cavity which passes through the end surface of the head end thereof, and the tail end of the spring extends into the assembly cavity.

3. The current-resistant connector according to claim 1, characterized in that The spring is sheathed on the conductive shunt.

4. The current-resistant connector according to claim 2 or 3, characterized in that: An internal cavity penetrating the tail end surface of the needle shaft is provided in the needle shaft, and the head end of the spring extends into the internal cavity.

5. The current-resistant connector according to claim 4, characterized in that: The built-in cavity also extends to the head end of the needle shaft.

6. The current-resistant connector according to claim 4, characterized in that The head end of the conductive shunt further extends into the built-in cavity.

7. The current-resistant connector according to claim 1, characterized in that The conductive seat body further comprises a sleeve cavity penetrating through the tail end face of the guide head seat body, the sleeve cavity is communicated with the receiving cavity, and the tail end of the conductive shunt body is sleeved in the sleeve cavity in an interference fit.

8. The current-resistant connector according to claim 1, characterized in that The conductive seat includes a needle tube and a sleeve fixedly mounted on the needle tube; the accommodating cavity includes a first cavity, a second cavity and a third cavity connected in sequence along its penetration direction, the first cavity is located in the needle tube, the second cavity and the third cavity are located in the sleeve, and the cavity diameter of the second cavity is larger than the cavity diameters of the first cavity and the third cavity; the needle shaft is slidably engaged with the first cavity, and the head end of the needle shaft passes through the third cavity; the sealing ring is located in the second cavity, or the sealing ring is located in both the second cavity and the third cavity.

9. The current-resistant connector according to claim 8, characterized in that The sealing ring is clamped by the end face of the head end of the needle tube and the end face of the second cavity opposite to the end face of the head end.

10. The current-resistant connector according to claim 8, characterized in that The sealing ring includes a radially expandable ring and an axially expandable ring connected to the radially expandable ring. The axially expandable ring is extended into the third cavity with an interference fit. The radially expandable ring is located in the second cavity. The radially expandable ring is also clamped by the end face of the needle tube head and the end face of the second cavity opposite to the end face of the needle tube head.

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