Pogo pin connector and charging device

Abstract

A pogo pin connector and a charging device. The pogo pin connector comprises a barrel member, a plunger member and a sealing sleeve, wherein the barrel member is provided with a movable cavity and a barrel opening that are in communication with each other; one end of the plunger member is inserted into the movable cavity through the barrel opening, and the plunger member can extend or retract relative to the barrel member in the axial direction of the barrel member; and one end of the sealing sleeve in the axial direction is sealingly sleeved on the plunger member, and the other end thereof is sealingly sleeved on the barrel member. By sealingly sleeving two ends of the sealing sleeve on the plunger member and the barrel member respectively, the sealing sleeve can seal off a fitting clearance between the plunger member and the barrel member from the outer side of the pogo pin connector, thereby effectively preventing impurities from intruding into the interior of the barrel member through the fitting clearance, and ensuring smooth movement of the plunger member, maintaining effective electrical contact between the plunger member and the barrel member, etc.

Description

A probe connector and charging device

[0001] This application claims priority to Chinese application No. 202411517275.2, filed on October 28, 2024, the contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of connector technology, specifically to a probe connector and a charging device. Background Technology

[0003] A probe connector (also known as a Pogo Pin, spring pin connector, or charging pin connector) is a high-precision connector widely used in electronic devices to enable electrical signal transmission between devices. For example, a probe connector is used in a charging device to detachably connect the metal contacts of the device to be charged, thereby replenishing the power of the device.

[0004] Existing probe connectors typically consist of three basic components: a needle shaft, a needle tube, and a spring. There is a clearance between the needle shaft and the needle tube to support the extension and retraction of the needle shaft relative to the needle tube. However, dirt and impurities such as sweat and dust can easily enter the needle tube through the clearance between the needle shaft and the needle tube, causing problems such as poor electrical contact between the needle shaft and the needle tube, and jamming of the needle shaft. Summary of the Invention

[0005] The main technical problem addressed by this application is to provide a probe connector and a charging device using the probe connector, which can prevent dirt and impurities from entering the interior of the connector.

[0006] According to a first aspect, one embodiment provides a probe connector, comprising:

[0007] A needle tube, wherein a movable cavity is formed inside the needle tube, and one end of the needle tube in the axial direction has a tube opening communicating with the movable cavity;

[0008] A needle shaft component, one end of which is inserted into the movable cavity via the tube opening in the axial direction, and the needle shaft component is capable of telescopic movement relative to the needle tube component in the axial direction; and

[0009] A sealing sleeve, one end of which is sealed to the needle shaft in the axial direction, and the other end of which is sealed to the needle tube in the axial direction.

[0010] In one embodiment, the sealing sleeve has a first sleeve portion, a connecting portion, and a second sleeve portion sequentially connected in the axial direction, wherein the first sleeve portion is fixedly and sealingly fitted onto the needle tube; wherein:

[0011] The second sleeve is fixedly and sealed to the needle shaft, so that the connecting part can deform as the needle shaft moves;

[0012] Alternatively, the second sleeve portion may be movably sealed onto the needle shaft, allowing the needle shaft to move relative to the sealing sleeve.

[0013] In one embodiment, the second sleeve is fixedly and sealingly fitted onto the needle shaft; at least a portion of the connecting portion is capable of elastic deformation as the needle shaft moves, to provide an elastic restoring force that causes the needle shaft to extend out of the needle tube.

[0014] In one embodiment, the second sleeve is fixedly and sealingly fitted onto the needle shaft, and the connecting portion has a deformable section and a shaping section that are connected in the axial direction; wherein:

[0015] The shaping section is connected to the first sleeve portion at one end in the axial direction away from the deformation section, and the deformation section is connected to the second sleeve portion at one end in the axial direction away from the shaping section, and the deformation section can deform as the needle shaft moves.

[0016] In one embodiment, the diameter of the deformable section gradually decreases from the end of the deformable section near the shaping section toward the end near the second socket.

[0017] In one embodiment, a first position, a second position, and a third position are sequentially defined along the movement trajectory of the second socket, and the position of the junction of the shaping segment and the deformation segment relative to the movement trajectory is the fourth position; wherein:

[0018] The second position has a first stroke D1 between it and the first position, and the second position has a second stroke D2 between it and the third position; in the radial direction of the needle tube, the second position has a straight-line distance S between it and the fourth position;

[0019] The deformable length L of the deformable segment satisfies L≥sqrt(max(D1, D2)). 2 +S 2 ).

[0020] In one embodiment, the connecting part is a corrugated pipe structure or a straight pipe structure;

[0021] Alternatively, the diameter of the connecting part may increase first and then decrease from the end of the connecting part closer to the second socket part toward the end closer to the first socket part;

[0022] Alternatively, the diameter of the connecting part gradually increases from the end of the connecting part closer to the second socket part toward the end closer to the first socket part.

[0023] In one embodiment, the outer peripheral surface of the needle tube is provided with a first groove; the first sleeve portion is nested in the first groove to fix the first sleeve portion and the needle tube; and / or the outer peripheral surface of the needle shaft is provided with a second groove; the second sleeve portion is nested in the second groove to fix the second sleeve portion and the needle shaft.

[0024] In one embodiment, the sealing sleeve is a one-piece structure made of a soft material.

[0025] In one embodiment, the sealing sleeve is a one-piece structure made of at least one material selected from silicone, polyvinyl alcohol, polyester, and polyimide.

[0026] In one embodiment, the probe connector further includes an elastic element disposed within the movable cavity, one end of the elastic element in the axial direction being connected to the needle shaft member, and the other end of the elastic element in the axial direction being connected to the needle tube member; the elastic element is used to provide an elastic restoring force that causes the needle shaft member to extend out of the needle tube member.

[0027] In one embodiment, the outer peripheral surface of the needle tube is provided with a first flange, and the sealing sleeve is used to seal one end of the needle tube as a first end, and the first end and the first flange abut against each other in the axial direction;

[0028] The first flange is used to press and fix the first end between the outer peripheral surface of the needle tube and the channel wall of the mounting channel when the probe connector is installed on the mounting carrier with the mounting channel, so that the sealing sleeve can seal and close the mounting channel.

[0029] In one embodiment, the outer peripheral surface of the needle tube is provided with a second flange and a third flange, the second flange and the third flange being located on the side of the sealing sleeve away from the needle shaft in the axial direction; wherein:

[0030] When the probe connector is mounted on a mounting carrier having a mounting channel; the second flange is used to abut against the channel wall of the mounting channel in the radial direction of the needle tube to restrict the position of the probe connector in the mounting channel in the radial direction; the third flange is used to abut against the mounting carrier in the axial direction to restrict the position of the probe connector in the mounting channel in the axial direction.

[0031] In one embodiment, the needle tube has a relief boss on the end face opposite to the tube opening in the axial direction, and a relief area is formed between the relief boss and the third flange to avoid the movable cavity. The relief area is used to provide space for the needle tube to connect the wire.

[0032] In one embodiment, the number of clearance areas is set to two, and the two clearance areas are symmetrical about the geometric center line of the active cavity in the radial direction. One of the two clearance areas is used to provide space for the needle tube to connect the wire, and the other of the two clearance areas is used to play a positioning role when the probe connector is installed on the mounting carrier.

[0033] According to a second aspect, one embodiment provides a charging device including a housing assembly and the probe connector described in the first aspect; wherein the housing assembly has a mounting channel communicating the interior and exterior of the housing assembly, the needle tube is disposed inside the housing assembly and passes through the mounting channel, and one end of the needle shaft, which is axially away from the needle tube, is exposed outside the housing assembly through the mounting channel.

[0034] In one embodiment, the housing assembly includes a first housing assembly having a receiving structure for housing a device to be charged, and the probe connector is disposed on the first housing assembly; wherein, one end of the needle shaft member away from the needle tube member in the axial direction is exposed inside and outside the receiving structure of the first housing assembly so as to be able to contact and connect to the device to be charged.

[0035] In one embodiment, the housing assembly further includes a second housing assembly, which is detachably or openably connected to the first housing assembly, and the second housing assembly is capable of forming a receiving space with the first housing assembly to receive the device to be charged.

[0036] In one embodiment, the charging device further includes a circuit board assembly disposed inside the housing assembly, and the probe connector is electrically connected to the circuit board assembly; wherein the probe tube is fixed to the housing assembly and / or the circuit board assembly.

[0037] In one embodiment, the charging device further includes a wire assembly and an interface assembly for connecting to an external device, the wire assembly being connected between the housing assembly and the interface assembly, and the probe connector being electrically connected to the interface assembly via the wire assembly.

[0038] According to the above embodiment, a probe connector includes a needle tube, a needle shaft, and a sealing sleeve. The needle tube has a communicating movable cavity and a port. One end of the needle shaft is inserted into the movable cavity through the port, and the needle shaft can extend and retract relative to the needle tube in the axial direction. One end of the sealing sleeve is sealed to the needle shaft in the axial direction, and the other end is sealed to the needle tube. By sealing the two ends of the sealing sleeve with the needle shaft and the needle tube respectively, the sealing sleeve can seal the mating gap between the needle shaft and the needle tube from the outside of the probe connector, thereby effectively preventing dirt and impurities from entering the interior of the needle tube through the mating gap, and ensuring smooth movement of the needle shaft and effective electrical contact between the needle shaft and the needle tube. Attached Figure Description

[0039] Figure 1 is a schematic diagram of the probe connector in the extended state of the probe shaft in one embodiment (I).

[0040] Figure 2 is a schematic diagram of the probe connector in the retracted state of the probe shaft in one embodiment (I).

[0041] Figure 3 is a schematic diagram of the cross-sectional structure of the sealing sleeve in Figure 1.

[0042] Figure 4 is a schematic diagram showing the positional change of the sealing sleeve in a probe connector according to one embodiment, as the probe shaft moves.

[0043] Figure 5 is a schematic diagram showing the moving position and dimensional relationship of the sealing sleeve in Figure 4.

[0044] Figure 6 is a schematic diagram of the probe connector in the extended state of the probe shaft in one embodiment (II).

[0045] Figure 7 is a schematic diagram of the probe connector in the retracted state of the pin shaft in one embodiment (II).

[0046] Figure 8 is a schematic cross-sectional view of a probe connector with the sealing sleeve thickness omitted in one embodiment.

[0047] Figure 9 is a schematic diagram of the outer contour structure of a probe connector according to an embodiment.

[0048] Figure 10 is a schematic diagram of the planar structure of the probe connector in Figure 9 in the axial direction.

[0049] Figure 11 is a schematic cross-sectional view of the sealing sleeve in a probe connector according to one embodiment (I).

[0050] Figure 12 is a schematic cross-sectional view of the sealing sleeve in a probe connector according to one embodiment (II).

[0051] Figure 13 is a schematic cross-sectional view of the sealing sleeve in a probe connector according to one embodiment (III).

[0052] Figure 14 is a schematic diagram of the structure of a charging device according to an embodiment.

[0053] Figure 15 is a schematic diagram of the cross-sectional structure of the charging device in Figure 14.

[0054] Figure 16 is a schematic diagram of the mounting structure of the probe connector in a charging device according to one embodiment.

[0055] Figure 17 is a schematic diagram of the structure of a charging device according to another embodiment.

[0056] In the picture:

[0057] 10. Needle tube assembly; 10a. Movable cavity; 10b. Clearance area; 11. First groove; 12. First flange; 13. Second flange; 14. Third flange; 15. Clearance boss; 20. Needle shaft assembly; 21. Second groove; 30. Sealing sleeve; 31. First sleeve part; 32. Second sleeve part; 33. Connecting part; 33a. Deformation section; 33b. Shaping section; 40. Elastic element;

[0058] 100, Probe connector; 200, Housing assembly; 200a, Mounting channel; 200b, Reception structure; 210, First housing assembly; 220, Second housing assembly; 300, Circuit board assembly; 400, Wire assembly; 500, Interface assembly. Detailed Implementation

[0059] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0060] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0061] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0062] Please refer to Figures 1, 2, and 6 to 9. This application provides a probe connector that can be applied to electronic devices to enable the transmission of current or signals between the device itself or between different devices. For example, please refer to Figures 14 to 17. The probe connector is applied to a charging device as a connector used by the charging device to make electrical contact with the device to be charged (such as wearable devices like headphones) so that the charging device can charge the device to be charged. The probe connector includes a needle tube 10, a needle shaft 20, a sealing sleeve 30, and other functional components as needed, which are described in detail below.

[0063] Please refer to Figures 1, 2, and 6 to 9. The needle tube 10 is generally a hollow cylindrical structure with a single-end opening. The needle tube 10 can be made of copper, conductive materials such as gold or nickel plating, or other materials. For ease of distinction and description, the internal space of the needle tube 10 is defined as the movable cavity 10a, and the opening that communicates with the movable cavity 10a in the axial direction of the needle tube 10 is defined as the port of the needle tube 10. At the same time, to describe the probe connector more clearly and in detail, the axial direction, radial direction, and circumferential direction are defined in this paper based on the needle tube 10. The axial direction can be understood as the direction in which the central axis of the needle tube 10 is located, the radial direction can be understood as the direction perpendicular to the central axis of the needle tube 10, and the circumferential direction can be understood as the direction formed radially around the central axis of the needle tube 10.

[0064] Please refer to Figures 1, 2, 6 to 9. The needle shaft 20 can be a solid columnar structure made of conductive materials such as copper, gold-plated or nickel-plated. For ease of distinction and description, the two opposite ends of the needle shaft 20 in the axial direction are defined as the limiting end and the contact end. The limiting end of the needle shaft 20 is inserted into the movable cavity 10a through the opening of the needle tube 10 and is confined within the movable cavity 10a. This allows the needle shaft 20 to have a structural part that can maintain contact with the inner peripheral wall of the needle tube 10, and also prevents the needle shaft 20 from completely disengaging from the needle tube 10.

[0065] Meanwhile, the needle shaft 20 is configured to slide and extend relative to the needle tube 10 along the axial direction, so that when the contact end of the needle shaft 20 is close to the needle tube 10, it exhibits a retracting motion relative to the needle tube 10, and when the contact end of the needle shaft 20 is far away from the needle tube 10, it exhibits an extending motion relative to the needle tube 10. That is to say, there is a fitting clearance between the inner peripheral wall of the needle tube 10 and the outer peripheral wall of the needle shaft 20 to support the telescopic movement of the needle shaft 20 relative to the needle tube 10. This fitting clearance can be naturally formed based on the dimensional difference between the inner diameter of the needle tube 10 and the outer diameter of the needle shaft 20.

[0066] It should be noted that the structure, materials, and structural fit between the needle tube 10 and the needle shaft 20 can be selected and set with reference to existing technologies, and will not be described in detail here.

[0067] Please refer to Figures 1, 2, 6, 7 and 9. The sealing sleeve 30 can be a tubular structure made of soft material and having a predetermined length in the axial direction. For example, the sealing sleeve 30 can be an integral tubular structure made of soft materials such as silicone, polyvinyl alcohol, polyester, and polyimide.

[0068] The sealing sleeve 30 is fitted around the outer periphery of the needle tube 10 and the needle shaft 20; specifically, one end of the sealing sleeve 30 in the axial direction is sealed to the needle shaft 20, and the other end of the sealing sleeve 30 in the axial direction is sealed to the needle tube 10.

[0069] Referring to Figure 8, by sealing the two ends of the sealing sleeve 30 to the outer periphery of the needle tube 10 and the needle shaft 20 respectively, the sealing sleeve 30 can seal the mating gap between the needle shaft 20 and the needle tube 10 from the outside of the probe connector. That is, the inner peripheral wall of the sealing sleeve 30, the outer peripheral wall of the needle tube 10 and the needle shaft 20 together form a sealed space that communicates with the mating gap and is sealed and isolated from the outside of the probe connector. This can effectively prevent liquids, dust and other dirt and impurities from the outside of the probe connector from entering the needle tube 10 through the mating gap, thereby ensuring the smooth movement of the needle shaft 20 and maintaining an effective electrical contact connection between the needle shaft 20 and the needle tube 10.

[0070] It should be noted that the sealing sleeve mentioned in this application refers to a structural relationship in which the inner peripheral wall of a local part of the sealing sleeve 30 is in full circumferential contact with the outer peripheral wall of the needle tube 10 or the outer peripheral wall of the needle shaft 20, so as to eliminate the structural gap between the sealing sleeve 30 and the needle tube 10 and the sealing sleeve 30 and the needle shaft 20 as much as possible; wherein, such full circumferential contact relationship can be a relatively fixed or relatively static contact relationship (i.e., fixed sealing sleeve) or a relatively sliding contact relationship (i.e., movable sealing sleeve).

[0071] For ease of distinction and description, please refer to Figures 3 and 11 to 13. The part of the sealing sleeve 30 that is sealed and fitted onto the needle tube 10 is defined as the first fitting part 31 of the sealing sleeve 30, the part of the sealing sleeve 30 that is sealed and fitted onto the needle shaft 20 is defined as the second fitting part 32 of the sealing sleeve 30, and the part that connects in the axial direction between the first fitting part 31 and the second fitting part 32 is defined as the connecting part 33 of the sealing sleeve 30.

[0072] In some embodiments, please refer to Figures 1, 2 and 9, the first sleeve 31 is fixedly and sealed to the needle tube 10, and the second sleeve 32 is fixedly and sealed to the needle shaft 20.

[0073] For example, the inner diameter of the first socket 31 can be set to be adapted to the outer diameter of the needle tube 10 (specifically, the inner diameter of the first socket 31 can be less than or equal to the outer diameter of the needle tube 10); by means of the size difference or material property difference between the first socket 31 and the needle tube 10, the first socket 31 is fixedly and sealed to the needle tube 10 in the form of an interference fit. For another example, referring to Figure 8, the needle tube 10 has a first limiting structure arranged around the central axis of the needle tube 10. This first limiting structure can use methods such as interference fit, snap-fit, adhesive, or abutment to restrict and fix the first socket 31 to the needle tube 10, thereby achieving a structural form in which the first socket 31 is fixedly and sealed to the needle tube 10.

[0074] For example, the inner diameter of the second sleeve portion 32 can be set to be adapted to the outer diameter of the needle shaft member 20 (specifically, the inner diameter of the second sleeve portion 32 can be less than or equal to the outer diameter of the needle shaft member 20); by means of the dimensional difference or material property difference between the second sleeve portion 32 and the needle shaft member 20, the second sleeve portion 32 is fixedly and sealed to the needle shaft member 20 in an interference fit manner. For another example, referring to Figure 8, the needle shaft member 20 has a second limiting structure arranged around the central axis of the needle shaft member 20. This second limiting structure can use interference fit, snap-fit, adhesive, abutment, or other methods to restrict and fix the second sleeve portion 32 to the needle shaft member 20, thereby achieving a structural form in which the second sleeve portion 32 is fixedly and sealed to the needle shaft member 20.

[0075] Therefore, when the needle shaft 20 moves telescopically relative to the needle tube 10, based on the structural relationship of the second sleeve 32 being fixedly sealed to the needle shaft 20, the sealing sleeve 30 (specifically, the connecting part 33) can be deformed as the needle shaft 20 moves. This will not affect the telescopic movement of the needle shaft 20, and can maintain the sealing of the mating gap. At the same time, based on the selection of the material or structural form of the sealing sleeve 30 (specifically, the connecting part 33), the force generated by the structural deformation of the sealing sleeve 30 can also provide assistance for the needle shaft 20 to extend relative to the needle tube 10.

[0076] In some embodiments, referring to Figures 6, 7, and 9, the first sleeve 31 is fixedly and sealingly fitted onto the needle tube 10, and the second sleeve 32 is movably and sealingly fitted onto the needle shaft 20. Exemplarily, the first sleeve 31 is fixedly and restrained onto the needle tube 10 by a first limiting structure, and the inner circumferential wall of the second sleeve 32 is slidably contacted with the outer circumferential wall of the needle shaft 20. Furthermore, by selecting and setting parameters such as the material hardness and wall thickness of the sealing sleeve 30 (specifically, the connecting part 33), the connecting part 33 is less prone to structural deformation in the axial direction. This allows the needle shaft 20 to simultaneously extend and retract relative to the needle tube 10 and the sealing sleeve 30; it can also be understood that the sealing sleeve 30 does not move or deform with the movement of the needle shaft 20. Therefore, the mating gap between the needle shaft 20 and the needle tube 10 can also be sealed from the outside of the probe connector.

[0077] In other embodiments, the first sleeve 31 can be movably and sealingly fitted onto the needle tube 10, while the second sleeve 32 can be fixedly and sealingly fitted onto the needle shaft 20; thus, the sealing sleeve 30 can move synchronously with the needle shaft 10 and achieve sealing of the mating gap to meet the application requirements of the probe connector.

[0078] It should be noted that the bold dashed lines with arrows in Figures 1, 2, 6 and 7 represent the direction in which the needle shaft 20 slides out or slides back relative to the needle tube 10.

[0079] In one embodiment, referring to FIG8 and in conjunction with FIG1, FIG2, FIG6, FIG7 and FIG9, the needle tube 10 has a first limiting structure for restricting and / or fixing the first socket 31 to the needle tube 10. The first limiting structure includes a first groove 11 disposed on the outer peripheral surface of the needle tube 10, and the first socket 31 is nested in the first groove 11.

[0080] For example, the first groove 11 may be an annular groove surrounding the central axis of the needle tube 10 and disposed on the outer peripheral surface of the needle tube 10; correspondingly, the first sleeve portion 31 may be an annular protrusion structure protruding from the inner wall of the tube opening of the sealing sleeve 30 or the inner peripheral wall of other parts, and the first sleeve portion 31 is nested in the first groove 11 in an interference fit manner.

[0081] For example, the first groove 11 may also be a plurality of groove structures arranged at intervals along the circumferential direction on the outer peripheral surface of the needle tube 10. Correspondingly, the first sleeve portion 31 is provided with a protrusion structure at the position of each groove structure. The protrusion structure can be aligned and fitted into the first groove 11, so that the first sleeve portion 31 is fixedly and sealed to the needle tube 10 in a multi-point fitting manner.

[0082] Therefore, by means of the nesting relationship between the first groove 11 and the first sleeve 31, the first sleeve 31 can be securely fixed and sealed to the needle tube 10, and the needle tube 10 and the sealing sleeve 30 can be easily disassembled and assembled.

[0083] In some embodiments, referring to FIG8 and in conjunction with FIG1, 2, 6 and 7, the first limiting structure includes a first flange 12, which protrudes from the outer peripheral surface of the needle tube 10 around the central axis of the needle tube 10. The first sleeve portion 31 abuts against the first flange 12 on the side away from the connecting portion 33 in the axial direction. Alternatively, the end of the sealing sleeve 30 used to seal the needle tube 10 (e.g., the first sleeve portion 31) can be defined as the first end of the sealing sleeve 30, which abuts against the first flange 12 in the axial direction. Thus, by using the first flange 12 to support and abut the first end (or the first sleeve portion 31), a structural limitation can be formed on the sealing sleeve 30 to prevent the sealing sleeve 30 from dislodging from the end of the needle tube 10 away from the tube opening.

[0084] Furthermore, when the probe connector is installed on a mounting carrier with a mounting channel (such as the housing assembly 200 described below), specifically when the end of the needle tube 10 away from the opening in the axial direction is fixed to a component such as a circuit board inside the mounting carrier, the first end of the sealing sleeve 30 or the first sleeve portion 31 can be pressed and fixed between the outer peripheral surface of the needle tube 10 and the channel wall of the mounting channel by the first flange 12. This allows the sealing sleeve 30 to seal the mounting channel, preventing external dirt and impurities from entering the interior of the mounting carrier through the mounting channel, thereby protecting the electronic components inside the mounting carrier. Since the function of the first flange 12 in the probe connector's installation application state is described in detail in some embodiments of the charging device provided below, it will not be repeated here.

[0085] In one embodiment, referring to FIG8 and in conjunction with FIG1 and FIG2, the needle shaft 20 has a second limiting structure that restricts and / or fixes the second sleeve portion 32 to the needle shaft 10. The second limiting structure includes a second groove 21 disposed on the outer peripheral surface of the needle shaft 20. The second groove 21 can be selectively disposed with reference to the aforementioned first groove 11. The second sleeve portion 32 is nested in the second groove 21, for example, nested in the second groove 21 in an interference fit. This makes the second sleeve portion 32 securely and sealingly fitted to the needle shaft 10.

[0086] In some embodiments, the second limiting structure may also include a flange structure disposed on the outer peripheral surface of the needle shaft 20. The sealing sleeve 30 is used to seal one end of the needle shaft 10 (specifically, the side of the second sleeve 32 away from the connecting portion 33 in the axial direction) against the flange structure. This can prevent the sealing sleeve 30 from coming out of the needle shaft 20, which is beneficial to ensuring the stability of the overall structure of the probe connector.

[0087] In one embodiment, referring to Figures 1 to 3 and Figure 9, the first sleeve 31 is fixedly and sealed to the needle tube 10, and the second sleeve 32 is fixedly and sealed to the needle shaft 20. A portion of the connecting part 33 in the axial direction is configured as a deformable structure or has deformable conditions. For example, by differentiating the material hardness or material thickness of different parts of the connecting part 33 in the axial direction, the connecting part 33 can be divided into a deformable section 33a and a shaping section 33b that are connected in the axial direction. The end of the deformable section 33a away from the shaping section 33b in the axial direction is connected to the second sleeve 32, and the end of the shaping section 33b away from the deformable section 33b in the axial direction is connected to the first sleeve 31.

[0088] When the needle shaft 20 moves telescopically relative to the needle tube 10, the deformation section 33a can deform with the movement of the needle shaft 20, while the shaping section 33b can maintain a relatively stable structural shape relative to the deformation section 33a. Thus, the sealing sleeve 30 can adapt to the movement of the needle shaft 20 to achieve sealing of the mating gap, and the sealing sleeve 30 or the probe connector as a whole can maintain a relatively stable outer contour shape to a certain extent.

[0089] In one embodiment, referring to Figures 1 to 3, the deformation section 33a adopts a variable diameter structure, that is, the diameter of the deformation section 33a gradually decreases from the end of the deformation section 33a near the shaping section 33b to the end near the second socket 32. In this way, the deformation section 33a can adapt to the size transition or size change between the second socket 32 ​​and the shaping section 33b (or the first socket 31), and the length of the deformation section 33a in the axial direction can be appropriately extended to adapt to the movement stroke of the needle shaft 20.

[0090] In other embodiments, the deformable section 33a may also adopt other structural forms. For example, the connecting part 33 may be a straight cylindrical structure with a uniform diameter. The material hardness or wall thickness of the deformable section 33a may be set to be less than that of the shaping section 33b. The second sleeve part 32 is an annular protrusion structure formed at the opening of the deformable section 33a away from the shaping section 33b. This allows the deformable section 33a to deform as the needle shaft 20 moves, while the shaping section 33b can maintain a relatively stable structural form relative to the deformable section 33a.

[0091] In some embodiments, referring to Figures 4 and 5 and in conjunction with Figures 1 to 3, the deformable length L of the deformable segment 33a can be set so that the deformable segment 33a or the sealing sleeve 30 can adapt to the travel requirements of the needle shaft 20.

[0092] Specifically, the second sleeve 32 is fixedly and sealed to the needle shaft 20, so that the second sleeve 32 can move synchronously with the needle shaft 20 relative to the needle tube 10. Therefore, along the movement trajectory of the second sleeve 32, there are a first position d1, a second position d2, and a third position d3. The first position d1 can be understood as the limit position of the needle shaft 20 extending relative to the needle tube 10, and the third position d3 can be understood as the limit position of the needle shaft 20 retracting relative to the needle tube 10. The distance between the first position d1 and the second position d2 is the first stroke D1, and the distance between the second position d2 and the third position d3 is the second stroke D2. The sum of the first stroke D1 and the second stroke D2 is the maximum movement stroke of the needle shaft 20 or the second sleeve 32 relative to the needle tube 10.

[0093] Meanwhile, the position of the contact point between the shaping section 33b and the deformation section 33a relative to the movement trajectory of the second socket 32 ​​is the fourth position d4; in the radial direction, there is a straight-line distance S between the second position d2 and the fourth position d4; it can be understood that the straight-line distance S is equivalent to the distance between the shaping section 33b and the needle shaft 20. The deformable length L of the deformation section 33a satisfies L≥sqrt(max(D1, D2)). 2 +S 2 ).

[0094] In some embodiments, based on the selection and setting of the overall structural form of the sealing sleeve 30, probe connectors with different structural forms or to meet different application requirements can be constructed.

[0095] For example, referring to Figure 11, the connecting part 33 adopts a straight tube structure with equal inner diameter. The first socket part 31 and the second socket part 32 can be a constricted structure or an annular protrusion structure formed on opposite sides of the connecting part 33. By setting the connecting part 33 as a straight tube structure, the volume of the sealed space communicating with the mating gap can be expanded, providing support for the needle shaft 20 to move telescopically relative to the needle tube 10 without being affected by factors such as air pressure.

[0096] For example, the connecting part 33 adopts a bellows structure, and the first sleeve part 31 and the second sleeve part 32 can be a constricted structure formed on opposite sides of the connecting part 33 in the axial direction or a protruding structure formed around the central axis of the sealing sleeve 30.

[0097] The first sleeve 31 and the second sleeve 32 are fixedly and sealed to the needle tube 10 and the needle shaft 20, respectively. The bellows structure of the connecting part 33 provides support for the deformation of the sealing sleeve 30 (specifically the connecting part 33) as the needle shaft 20 moves. At the same time, based on the choice of material for the connecting part 33 (for example, using a soft material with a certain degree of elasticity), it can assist the needle shaft 20 in extending and moving relative to the needle tube 10.

[0098] For example, referring to Figure 12, the connecting part 33 adopts a tubular structure with a variable diameter; for example, the diameter of the connecting part 33 gradually increases from the end of the connecting part 33 near the second socket 32 ​​toward the end near the first socket 33, and the first socket 31 and the second socket 32 ​​can be a constricted structure or an annular protrusion structure formed on opposite sides of the connecting part 33.

[0099] Therefore, the sealing sleeve 30 can be constructed into an approximately tapered tubular structure to accommodate the difference in outer diameter between the needle shaft 20 and the needle tube 10; at the same time, it can also guide liquids and other dirt and impurities from the outside of the sealing sleeve 30 to the side of the probe connector away from the needle shaft 20, so as to prevent dirt and impurities from entering the interior of the sealing sleeve 30 through the second sleeve 32 and the needle shaft 20 during the movement of the needle shaft 20.

[0100] In other embodiments, please refer to FIG13, the diameter of the connecting part 33 increases first and then decreases from the end of the connecting part 33 near the second socket part 32 toward the end near the first socket part 31, thereby constructing the sealing sleeve 30 into an approximately spherical or bladder-shaped structure to meet different application requirements; all such details will not be elaborated here.

[0101] In one embodiment, referring to Figures 1 and 2, the first sleeve 31 is fixedly and sealed to the needle tube 10, and the second sleeve 32 is fixedly and sealed to the needle shaft 20; wherein, the connecting part 33 is configured such that at least a portion in the axial direction can elastically deform as the needle shaft 20 moves, for example, the deformable segment 33a of the connecting part 33 can elastically stretch and contract.

[0102] Thus, the connecting part 33 can provide the needle shaft 20 with an elastic restoring force that causes it to extend out of the needle tube 10; that is, by giving the connecting part 33 the ability to undergo elastic deformation, the connecting part 33 can always have the tendency to drive the needle shaft 10 to extend out of the needle tube 10. When the needle shaft 20 retracts relative to the needle tube 10, the connecting part 33 can store elastic potential energy in the axial direction due to structural deformation. When the pressure force applied to the needle shaft 20 is removed, the connecting part 33 can release the elastic potential energy, causing the needle shaft 20 to extend out of the needle tube 10 in the axial direction away from the needle tube 10.

[0103] In one embodiment, referring to FIG8, the probe connector further includes an elastic element 40, which may be a spring or other form of elastic structure made of the same material as the needle shaft 20 and the needle tube 10; the elastic element 40 is disposed inside the needle tube 10, and one end of the elastic element 40 in the axial direction is connected (e.g., abutting) to the needle shaft 20, and the other end of the elastic element 40 in the axial direction is connected (e.g., abutting) to the needle tube 10.

[0104] Therefore, the elastic element 40 can provide the needle shaft 20 with sufficient elastic restoring force to cause it to extend out of the needle tube 10. That is, when the contact end of the needle shaft 20 is subjected to pressure and moves back relative to the needle tube 10, the needle shaft 20 can compress the elastic element 40 to store elastic potential energy. When the pressure is removed, the elastic element 40 releases the elastic potential energy, causing the needle shaft 20 to extend out of the needle tube 10 to the initial position.

[0105] It should be noted that in some designs where the sealing sleeve 30 can elastically deform along with the needle shaft 20, the sealing sleeve 30 can share part of the function of the elastic element 40, assisting the elastic element 40 in providing the elastic restoring force that causes the needle shaft 20 to extend out of the needle tube 10.

[0106] In other embodiments, the elastic element 40 may be omitted. The elastic deformation of the sealing sleeve 30 is utilized to provide all the elastic restoring force for the needle shaft 20 to extend out of the needle tube 10. This helps to reduce the number of components in the probe connector and reduce the overall structural complexity of the probe connector.

[0107] In one embodiment, referring to FIG9 and in conjunction with FIG16, the outer peripheral surface of the needle tube 10 is provided with a second flange 13 and a third flange 14, the second flange 13 and the third flange 14 being located on the side of the sealing sleeve 30 away from the needle shaft 10 in the axial direction; wherein, the second flange 13 is smaller in the radial direction than the third flange 14, and the second flange 13 is closer to the sealing sleeve 30 than the third flange 14 in the axial direction.

[0108] Referring to Figure 16, when the probe connector is installed on a mounting carrier (such as the housing assembly described below) with a mounting channel, specifically when the probe connector is inserted into the mounting channel, the circumferential surface of the second flange 13 can be used to abut against the channel wall of the mounting channel in the radial direction (for example, the second flange 13 is inserted into the mounting channel in an interference fit) to achieve radial positioning of the probe connector (i.e., defining the position of the probe connector in the mounting channel in the radial direction); while the stepped surface formed by the third flange 14 in the axial direction can abut against the mounting carrier (for example, the mounting carrier surrounds the end face of the mounting channel) to achieve axial positioning of the probe connector (i.e., defining the position of the probe connector in the mounting channel in the axial direction).

[0109] Therefore, based on the second flange 13 and the third flange 14, the probe connector (specifically, the needle tube 10) can be directly positioned on the mounting carrier, so that the probe connector can establish an electrical signal connection with the circuit board, etc. through wires. This facilitates flexible installation and application of the probe connector, reduces installation difficulty, and improves installation accuracy. In addition, the stepped surface formed by the second flange 13 in the axial direction can also support and hold the sealing sleeve 30 (for example, the side of the first sleeve portion 31 away from the connecting portion 33 in the axial direction), thereby forming a constraint on the sealing sleeve 30 and preventing the sealing sleeve 30 from coming out of the needle tube 10.

[0110] In some embodiments, referring to Figures 9 and 10 and in conjunction with Figure 16, the needle tube 10 has a relief boss 15 on the end face opposite to the tube opening in the axial direction, and a relief area 10b is formed between the relief boss 15 and the third flange 14 to avoid the movable cavity 10a. Specifically, in the axial direction, the projection of the relief boss 15 can cover the projection of the movable cavity 10a; and the relief area 10b can be formed between the radial surface of the relief boss 15 and the stepped surface formed by the third flange 14 in the axial direction. For example, the relief area 10b is formed on both opposite sides of the relief boss 15 in the radial direction, or on one side of the relief boss 15 in the radial direction, or the relief area 10b surrounds the relief boss 15 in the circumferential direction.

[0111] Therefore, the clearance boss 15 can meet the height space (or axial direction) size requirements of the movable cavity 10a, and the clearance area 10b can provide space support for the connection of wires (such as cables, ribbon cables, flexible printed circuits (FPCs, etc., selected according to actual needs, not limited here) to the needle tube 10. For example, one end of the wire can be soldered to the needle tube 10 in the clearance area 10b. This not only allows the connection position of the wire and the needle tube 10 to avoid the movable cavity 10a, but also helps to reduce the overall height dimension (i.e., the axial direction dimension) of the probe connector.

[0112] In some embodiments, referring to Figure 10, the number of clearance areas 10b is set to two. The two clearance areas 10b are symmetrically arranged in the radial direction about the geometric center line of the movable cavity 10a or the clearance boss 15. In this way, one clearance area 10b can provide space support for the connecting wire of the needle tube 10, while when the probe connector is installed on the mounting carrier, the other clearance area 10b can play a role in foolproof positioning, so as to conveniently, quickly and accurately determine the position or orientation of the probe connector on the mounting carrier, thereby improving the installation accuracy.

[0113] Given that the roles of the second flange 13, the third flange 14, the clearance boss 15, the clearance area 10b, etc., in the probe connector are described in detail in some embodiments of the charging device provided below, they will not be repeated here.

[0114] Referring to Figures 14 to 17 and in conjunction with Figures 1 to 13, this application embodiment also provides a charging device, including a housing assembly 200 and a probe connector 100 of any of the foregoing embodiments; wherein, the probe connector 100 is disposed on the housing assembly 200, and the needle tube 10 is fixedly disposed relative to the housing assembly 200. Exemplarily, the housing assembly 200 has a mounting channel 200a communicating between the interior and exterior of the housing assembly 200, the needle tube 10 is disposed inside the housing assembly 200 and passes through the mounting channel 200a, while the contact end of the needle shaft 20 is exposed outside the housing assembly 100 through the mounting channel 200a (specifically, extending out of the housing assembly 200).

[0115] Therefore, the pin shaft 20 can serve as a connection carrier between the charging device and other devices, or as a connection carrier between different components within the charging device itself. In specific implementations, the number of mounting channels 200a and probe connectors 100 can be set to multiple, with each mounting channel 200a corresponding to a different probe connector 100. For example, the number of probe connectors 200 can be set to two, with each probe connector 200 used to connect to the positive and negative metal contacts of the device to be charged. Alternatively, the number of probe connectors 100 can be set to four, six, or more, so that the device to be charged can simultaneously make electrical contact connections with multiple other devices.

[0116] It should be noted that the charging device can be a device that has a charging function (or at the same time has a power storage function) and is specifically designed to charge other devices. For example, after establishing an electrical connection between the contact end of the pin shaft 20 and the metal contacts of wearable devices such as headphones, smartwatches, and smart glasses, the charging device can be used to charge the wearable devices.

[0117] In some applications, the charging device can also be an electronic device that can transmit data to itself or other devices via the probe connector 100; that is, the probe connector 100 can be used to transmit signal data, or the charging device can transmit signal data via the probe connector 100.

[0118] The following description mainly uses a charging device as an example, specifically designed to charge other devices, to illustrate the structure, function, and working principle of the charging device.

[0119] In one embodiment, referring to FIG15, the charging device further includes a circuit board assembly 300. The circuit board assembly 300 can be understood as a collection of a circuit board, a battery, and related components. The circuit board assembly 300 is disposed inside the housing assembly 200 and electrically connected to the probe connector 100 (specifically, a needle tube 10). The needle tube 10 can be fixed to either the housing assembly 200 or the circuit board assembly 300. The circuit board assembly 300 provides the charging device with energy storage and charging / discharging functions, enabling charging of the device when a contact connection is established between the device to be charged and the probe connector 100.

[0120] For example, the probe connector 100 is fixed to the circuit board assembly 300. Specifically, referring to Figure 15, the circuit board assembly 300 has a positioning hole (not shown in the figure) that passes through the circuit board assembly 300 in the axial direction. The end of the needle tube 10 away from the tube opening in the axial direction passes through the positioning hole and is fixed to the circuit board assembly 300. The other end of the needle tube 10 (i.e., the end where the tube opening is located) passes through the mounting channel 200a. The outer peripheral surface of the needle tube 10 is provided with a first flange 12. As mentioned above, the first end of the sealing sleeve 30 abuts against the stepped surface formed by the first flange 12 in the axial direction, and the stepped surface abuts against the inner wall of the housing assembly 100 surrounding the mounting channel 200a, so as to press and fix the first end of the sealing sleeve 30 (specifically, the first sleeve portion 31) between the outer peripheral surface of the needle tube 10 and the channel wall of the mounting channel 200a.

[0121] Therefore, with the probe connector 100 fixedly mounted on the circuit board assembly 300, the structural fit between the needle tube 10 and the mounting channel 200a provides structural support for the extension and retraction of the needle shaft 20 relative to the mounting channel 200a. The sealing sleeve 30, while sealing the gap between the needle shaft 20 and the needle tube 30, also provides a full circumferential seal to the mounting channel 200a, achieving a sealed isolation between the interior and exterior of the housing assembly 200. This prevents dirt and impurities from entering the interior of the needle tube 30 through the gap between the needle shaft 20 and the needle tube 30, and also prevents dirt and impurities from entering the interior of the housing assembly 200 through the mounting channel 200a, thereby effectively improving the overall sealing and protection performance of the charging device.

[0122] For example, the probe connector 100 is fixed to the housing assembly 300. Specifically, referring to Figure 16, the outer peripheral surface of the needle tube 10 is provided with a second flange 13 and a third flange 14, and the axial end face of the needle tube 10 is provided with a relief boss 15 and forms a relief area 10b. As mentioned above, the second flange 13 can be interference-fitted into the mounting channel 200a to achieve radial positioning of the needle tube 10 (or probe connector 100). The third flange 14 abuts against the inner wall of the housing assembly 200 surrounding the mounting channel 200a in the axial direction to achieve axial positioning of the needle tube 10 (or probe connector 100). The wire can be soldered to the needle tube 10 in the relief area 10b to establish an electrical connection between the probe connector 100 and the circuit board assembly 300. In a specific implementation, the third flange 14 can be further fixed to the housing assembly 200 by potting.

[0123] Firstly, the needle shaft 20 and the sealing sleeve 30 have high requirements for coaxiality to ensure that the needle shaft 20 can move smoothly or that the sealing sleeve 30 can deform as the needle shaft 20 moves. In the scheme where the probe connector 100 is installed and fixed in the circuit board assembly 300, the positioning of the probe connector 100 involves many dimensional chains (such as positioning holes and PIN holes in the circuit board assembly 300, positioning posts and mounting channels 200a in the housing assembly 100, etc.). The accumulation of deviations between these dimensional chains can easily occur, which will not only seriously affect the coaxiality and increase the difficulty of positioning and installing the probe connector 100, but also require the orientation of the probe connector 100 (for example, it is necessary to ensure that the probe connector 100 is perpendicular to the circuit board assembly 300).

[0124] By using the second flange 13 and the third flange 14 to position the probe connector 100 from different directions, the probe connector 100 (specifically, the needle tube 10) can be directly positioned and restricted within the mounting channel 200a or on the housing assembly 200. This effectively reduces the number of dimensional chains, lowers the installation difficulty of the probe connector 100, and ensures installation accuracy and coaxiality.

[0125] Secondly, by utilizing the abutting relationship between the third flange 14 and the housing assembly 200, the probe connector 100 can be axially positioned, and the structural gap between them can be sealed by means of potting, thereby achieving the sealing treatment of the mounting channel 200a. Since there is no need to use the sealing sleeve 30 to seal the mounting channel 200a, this creates conditions for reducing the diameter of the sealing sleeve 30 (or the probe connector 100 as a whole).

[0126] Thirdly, by utilizing the provided clearance boss 15 and the formed clearance area 10b, wire bonding can be performed while ensuring the internal cavity (i.e., the movable cavity 10a) of the needle tube 10 is cleared, for example, one end of the wire is soldered to the needle tube 10 within the clearance area 10b, thus forming a wire-bonded probe connector. In this way, the position of the probe connector 100 can be flexibly set according to the overall structural layout requirements of the charging device, without any requirements on the orientation of the probe connector 100. Furthermore, it helps to reduce the overall axial dimension of the probe connector 100 and lower the height space requirements. In addition, the clearance areas 10b formed on opposite sides of the clearance boss 15 in the radial direction not only meet the requirement of soldering the wire to the needle tube 10, but also serve as a foolproof positioning feature when the probe connector 100 is installed in the housing assembly 100.

[0127] In some embodiments, the circuit board assembly 300 may be omitted from the charging device. Referring to FIG17, the charging device includes a housing assembly 200, a probe connector 100, a wire assembly 400, and an interface assembly 500. The probe connector 100 may be a wire-bonded probe connector as described in the previous embodiments, or it may be fixedly mounted on other structural components inside the housing assembly 100 in a manner similar to that of the circuit board assembly 300. The wire assembly 400 is connected between the interface assembly 500 and the housing assembly 200 (e.g., the first housing assembly 200), and the probe connector 100 is electrically connected to the interface assembly 500 through the wire assembly 400. The interface assembly 500 may be a Type-C interface, a USB interface, a magnetic interface, a Lightning interface, etc.

[0128] Therefore, the charging device can be electrically connected to the power source through the interface component 500. After the device to be charged is placed in the housing component 200 and forms a contact connection with the probe connector 100, the charging device can be used as the connection medium between the device to be charged and the power source, thereby realizing the charging of the device to be charged.

[0129] In one embodiment, referring to Figures 14 and 15, the housing assembly 200 includes a first housing assembly 210 and a second housing assembly 220. The first housing assembly 210 has a receiving structure 200b for housing a device to be charged (e.g., a wearable device such as headphones, a watch, a bracelet, or glasses). This receiving structure 200b can be a contoured groove structure adapted to the entire or partial contour of the device to be charged. A probe connector 100 is disposed inside the housing assembly 200, and the contact end of the probe shaft 20 is exposed inside and outside the receiving structure 200b of the first housing assembly 210. When the device to be charged is placed in the receiving structure 200b, the device to be charged can apply a pressure force to the probe shaft 20 to retract relative to the probe tube 10, thereby maintaining contact between the probe shaft 20 and the connection structure of the device to be charged, thus establishing an electrical contact connection between the charging device and the device to be charged, so as to charge the device.

[0130] The second housing assembly 220 can be opened and closed to the first housing assembly 210 via a pivot structure. The second housing assembly 220 can also be detachably connected to the first housing assembly 210 via a snap-fit ​​structure, a magnetic structure, etc., so that the first housing assembly 210 and the second housing assembly 220 form a receiving space that can accommodate the device to be charged, thereby storing the device to be charged inside the charging device.

[0131] Of course, the second housing assembly 220 can also be omitted, and the first housing assembly 210 can be used as a carrier for placing the device to be charged on the charging device and as a mounting carrier for the probe connector 100.

[0132] The above examples illustrate this application only to aid understanding and are not intended to limit its scope. Those skilled in the art to which this application pertains can make various simple deductions, modifications, or substitutions based on the ideas presented.

Claims

1. A probe connector, characterized in that, include: A needle tube, wherein a movable cavity is formed inside the needle tube, and one end of the needle tube in the axial direction has a tube opening communicating with the movable cavity; A needle shaft component, one end of which is inserted into the movable cavity through the tube opening in the axial direction, and the needle shaft component is capable of telescopic movement relative to the needle tube component in the axial direction; as well as A sealing sleeve, one end of which is sealed to the needle shaft in the axial direction, and the other end of which is sealed to the needle tube in the axial direction.

2. The probe connector as described in claim 1, characterized in that, The sealing sleeve has a first sleeve portion, a connecting portion, and a second sleeve portion that are sequentially connected in the axial direction, wherein the first sleeve portion is fixedly and sealingly fitted onto the needle tube. Wherein, the second sleeve portion is fixedly and sealed to the needle shaft component, so that the connecting portion can deform as the needle shaft component moves; or the second sleeve portion is movably and sealed to the needle shaft component, so that the needle shaft component can move relative to the sealing sleeve.

3. The probe connector as described in claim 2, characterized in that, The second sleeve is fixedly and sealed to the needle shaft; at least a portion of the connecting portion is capable of elastic deformation as the needle shaft moves, so as to provide an elastic restoring force that causes the needle shaft to extend out of the needle tube.

4. The probe connector as described in claim 2, characterized in that, The second sleeve is fixedly and sealed to the needle shaft, and the connecting part has a deformation section and a shaping section that are connected in the axial direction; Wherein, the end of the shaping section away from the deformation section in the axial direction is connected to the first sleeve portion, the end of the deformation section away from the shaping section in the axial direction is connected to the second sleeve portion, and the deformation section can deform as the needle shaft moves.

5. The probe connector as described in claim 4, characterized in that, The diameter of the deformed section gradually decreases from the end of the deformed section near the shaping section toward the end near the second socket.

6. The probe connector as described in claim 4, characterized in that, Along the movement trajectory of the second socket, there are sequentially defined first, second, and third positions, and the position of the junction between the shaping segment and the deformation segment relative to the movement trajectory is the fourth position; wherein: The second position has a first stroke D1 between it and the first position, and the second position has a second stroke D2 between it and the third position; in the radial direction of the needle tube, the second position has a straight-line distance S between it and the fourth position; The deformable length L of the deformable segment satisfies L≥sqrt(max(D1, D2)). 2 +S 2 ).

7. The probe connector as described in claim 2, characterized in that, The connecting part is a corrugated pipe structure or a straight pipe structure; Alternatively, the diameter of the connecting part may increase first and then decrease from the end of the connecting part closer to the second socket part toward the end closer to the first socket part; Alternatively, the diameter of the connecting part gradually increases from the end of the connecting part closer to the second socket part toward the end closer to the first socket part.

8. The probe connector as described in claim 2, characterized in that, The outer peripheral surface of the needle tube is provided with a first groove; the first sleeve portion is nested in the first groove to fix the first sleeve portion and the needle tube; and / or the outer peripheral surface of the needle shaft is provided with a second groove; the second sleeve portion is nested in the second groove to fix the second sleeve portion and the needle shaft.

9. The probe connector as claimed in claim 1, characterized in that, The sealing sleeve is a one-piece structure made of soft material.

10. The probe connector as claimed in claim 9, characterized in that, The sealing sleeve is an integral structure made of at least one of the following materials: silicone, polyvinyl alcohol, polyester, and polyimide.

11. The probe connector as claimed in claim 1, characterized in that, The probe connector further includes an elastic element disposed within the movable cavity. One end of the elastic element in the axial direction is connected to the needle shaft, and the other end of the elastic element in the axial direction is connected to the needle tube. The elastic element is used to provide an elastic restoring force that causes the needle shaft to extend out of the needle tube.

12. The probe connector as claimed in any one of claims 1-11, characterized in that, The outer peripheral surface of the needle tube is provided with a first flange, and the sealing sleeve is used to seal one end of the needle tube as the first end, and the first end and the first flange abut against each other in the axial direction; The first flange is used to press and fix the first end between the outer peripheral surface of the needle tube and the channel wall of the mounting channel when the probe connector is installed on the mounting carrier with the mounting channel, so that the sealing sleeve can seal and close the mounting channel.

13. The probe connector as claimed in any one of claims 1-11, characterized in that, The outer peripheral surface of the needle tube is provided with a second flange and a third flange, the second flange and the third flange being located on the side of the sealing sleeve away from the needle shaft in the axial direction; wherein: When the probe connector is mounted on a mounting carrier having a mounting channel; the second flange is used to abut against the channel wall of the mounting channel in the radial direction of the needle tube to restrict the position of the probe connector in the mounting channel in the radial direction; the third flange is used to abut against the mounting carrier in the axial direction to restrict the position of the probe connector in the mounting channel in the axial direction.

14. The probe connector as claimed in claim 13, characterized in that, The needle tube is provided with a relief boss on the end face opposite to the tube opening in the axial direction. A relief area is formed between the relief boss and the third flange to avoid the movable cavity. The relief area is used to provide space for the needle tube to connect the wire.

15. The probe connector as claimed in claim 14, characterized in that, The number of the avoidance areas is set to two, and the two avoidance areas are symmetrical about the geometric center line of the active cavity in the radial direction. One of the two avoidance areas is used to provide space for the needle tube to connect the wire, and the other of the two avoidance areas is used to play a positioning role when the probe connector is installed on the mounting carrier.

16. A charging device, characterized in that, The device includes a housing assembly and a probe connector as described in any one of claims 1-15; wherein the housing assembly has a mounting channel communicating the interior and exterior of the housing assembly, the needle tube is disposed inside the housing assembly and passes through the mounting channel, and one end of the needle shaft, which is away from the needle tube in the axial direction, is exposed outside the housing assembly through the mounting channel.

17. The charging device as claimed in claim 16, characterized in that, The housing assembly includes a first housing assembly, which has a receiving structure for housing the device to be charged, and the probe connector is disposed in the first housing assembly; wherein, one end of the needle shaft member away from the needle tube member in the axial direction is exposed inside and outside the receiving structure of the first housing assembly so as to be able to contact and connect to the device to be charged.

18. The charging device as claimed in claim 17, characterized in that, The housing assembly further includes a second housing assembly, which is detachably connected to or can be opened and closed with the first housing assembly. The second housing assembly can be enclosed with the first housing assembly to form a receiving space for accommodating the device to be charged.

19. The charging device according to any one of claims 16-18, characterized in that, The charging device further includes a circuit board assembly disposed inside the housing assembly, and the probe connector is electrically connected to the circuit board assembly; wherein the probe tube is fixed to the housing assembly and / or the circuit board assembly.

20. The charging device according to any one of claims 16-18, characterized in that, The charging device further includes a wire assembly and an interface assembly for connecting to an external device. The wire assembly is connected between the housing assembly and the interface assembly, and the probe connector is electrically connected to the interface assembly through the wire assembly.

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