Ejector pin and connector module

Abstract

The embodiment of the utility model provides an ejector pin and a connector module. The ejector pin comprises a pin shaft, a sealing ring, a pin tube, an elastic piece and a tail plug. The needle shaft comprises a contact end, a first sliding part, a second sliding part and a connecting end, and a first annular protrusion is formed on the connecting end in the radial direction of the needle shaft. The sealing ring is sleeved on the first sliding part. A containing cavity is formed in the needle tube, the first sliding part, the second sliding part and the sealing ring are arranged in the containing cavity in the axial direction of the needle tube in a sliding mode, and the contact end and the connecting end protrude out of the needle tube. The elastic piece is arranged on the second sliding part in a sleeving mode and arranged in the containing cavity. The tail plug is located on the outer side of the needle tube and provided with an insertion hole, the first annular protrusion is in interference fit with the insertion hole, and the tail plug is used for preventing the needle shaft from falling off from the needle tube. Thus, the gap between the first sliding part of the needle shaft and the inner wall of the needle tube is sealed through the sealing ring, water, dust, oil dirt and the like are prevented from entering the containing cavity, and the waterproof, dustproof and oil-proof performance of the ejector pin is improved.

Description

Technical Field

[0001] The present application relates to the field of connectors, and in particular to a ejector pin and a connector module. Background Art

[0002] Pogo pin is a spring-type probe precision connector made of three basic components: needle shaft, spring, and needle tube. It can be used in some small and delicate electronic products such as mobile phones. It is widely used in semiconductor equipment to play a connecting role.

[0003] In order to stably install the needle shaft and the spring in the needle tube, one method is to assemble the needle shaft by riveting the needle tube at the tube mouth where the needle shaft extends out. However, this method is not conducive to the stability of the needle tube structure, which shortens the service life of the ejector pin. Another method is to add a limiter to the tail end of the needle tube. However, the tail plug of this method is easy to fall off, so the needle tube is still easy to fall off, which shortens the service life of the ejector pin. Utility Model Content

[0004] The embodiment of the present application provides a ejector pin and connector module, which can better prevent the needle shaft from falling off the needle tube during the sliding process.

[0005] The ejector provided in the embodiment of the present application includes a needle shaft, a sealing ring, a needle tube, an elastic member and a tail plug. The needle shaft includes a contact end, a first sliding portion, a second sliding portion and a connecting end connected in sequence, and the connecting end is formed with a first annular protrusion along the radial direction of the needle shaft. The sealing ring is sleeved on the first sliding portion. A receiving cavity is formed inside the needle tube, and the first sliding portion, the second sliding portion and the sealing ring are slidably arranged in the receiving cavity along the axial direction of the needle tube, and the contact end and the connecting end protrude from the needle tube. The elastic member is sleeved on the second sliding portion and placed in the receiving cavity. The tail plug is located on the outside of the needle tube and is formed with a socket, and the first annular protrusion is interference fit with the socket, and the tail plug is used to prevent the needle shaft from falling off from the needle tube.

[0006] In certain embodiments, the end surface of the contact end of the needle shaft is a plane.

[0007] In some embodiments, a circle of mounting grooves is formed on the first sliding portion, and the sealing ring is embedded in the mounting grooves.

[0008] In certain embodiments, the inner wall of the needle tube is provided with a circle of mounting grooves on a side close to the first sliding portion, and the sealing ring is embedded in the mounting grooves.

[0009] In certain embodiments, a gap between an outer wall of the first sliding portion and an inner wall of the needle tube is 0.01 mm to 0.05 mm.

[0010] In certain embodiments, an outwardly protruding annular convex edge is formed on one side of the needle tube close to the contact end.

[0011] In some embodiments, the outer diameter of the first sliding portion is greater than the outer diameter of the second sliding portion, and the elastic member abuts against the bottom of the first sliding portion.

[0012] In some embodiments, a flange is provided on one side of the needle tube close to the connecting end, and the flange extends along the radial direction of the needle tube toward the second sliding portion, one end of the elastic member abuts against the flange, and the other end of the elastic member abuts against the first sliding portion.

[0013] The connector module provided in the embodiment of the present application comprises a connecting piece and any one of the ejector pins described above, wherein the connecting piece is provided with a plurality of installation holes arranged at intervals, the ejector pins correspond to the installation holes one by one, and a plurality of the ejector pins are installed in the installation holes.

[0014] In certain embodiments, a second annular protrusion is formed on the outer wall of the needle tube along the radial direction of the needle tube, and the second annular protrusion is interference fit with the mounting hole.

[0015] In the ejector pin and connector module of the embodiment of the present application, the first annular protrusion of the needle shaft is subjected to interference fit with the tail plug, which can better prevent the tail plug from falling off from the connection end, thereby preventing the needle shaft from falling off from the needle tube during the sliding process, thereby extending the service life of the ejector pin. In addition, the sealing ring is used to seal the gap between the first sliding portion of the needle shaft and the inner wall of the needle tube, thereby improving the waterproof, dustproof and oilproof performance of the ejector pin, preventing water, dust and oil from entering the accommodating cavity, and improving the quality of the ejector pin. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0017] Figure 1 Schematic diagram of the structure of the ejector pin according to an embodiment of the present application.

[0018] Figure 2 This is a schematic diagram of an exploded view of the ejector pin according to an embodiment of the present application.

[0019] Figure 3 Schematic diagram of a cross-section of an ejector pin according to an embodiment of the present application.

[0020] Figure 4 This is another schematic cross-sectional view of the ejector pin according to the embodiment of the present application.

[0021] Figure 5 Another cross-sectional schematic diagram of the ejector pin according to the embodiment of the present application.

[0022] Figure 6 This is another schematic cross-sectional view of the ejector pin according to the embodiment of the present application.

[0023] Figure 7 This is a schematic diagram of the structure of the connector module according to an embodiment of the present application.

[0024] Description of main component symbols:

[0025] Ejector 100, needle shaft 10, contact end 11, end face 111, first sliding portion 12, outer wall 121 of first sliding portion 12, first limiting groove 122, second sliding portion 13, connecting end 14, first annular protrusion 141, mounting groove 15, sealing ring 20, needle tube 30, accommodating cavity 31, first opening 32, second opening 33, inner wall 34, annular convex edge 35, flange 36, second limiting groove 361, second annular protrusion 37, elastic member 40, tail plug 50, jack 51, connector module 1000, connecting member 200, mounting hole 201. DETAILED DESCRIPTION

[0026] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0027] In the description of the present application, it should be understood that the terms, "length", "width", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0028] In the description of this application, it should be understood that terms such as "first" and "second" are only used to distinguish similar objects and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0029] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application.

[0031] See also Figure 1-Figure 3 The ejector pin 100 provided in the embodiment of the present application includes a needle shaft 10, a sealing ring 20, a needle tube 30, an elastic member 40 and a tail plug 50. The needle shaft 10 includes a contact end 11, a first sliding portion 12, a second sliding portion 13 and a connecting end 14 which are connected in sequence, and the connecting end 14 is formed with a first annular protrusion 141 along the radial direction of the needle shaft 10. The sealing ring 20 is sleeved on the first sliding portion 12. An accommodating chamber 31 is formed inside the needle tube 30, and the first sliding portion 12, the second sliding portion 13 and the sealing ring 20 are slidably arranged in the accommodating chamber 31 along the axial direction of the needle tube 30, and the contact end 11 and the connecting end 14 protrude from the needle tube 30. The elastic member 40 is sleeved on the second sliding portion 13 and placed in the accommodating chamber 31. The tail plug 50 is located outside the needle tube 30 and is formed with an insertion hole 51 . The first annular protrusion 141 is interference fit with the insertion hole 51 . The tail plug 50 is used to prevent the needle shaft 10 from falling off from the needle tube 30 .

[0032] In the ejector pin 100 and the connector module 1000 of the embodiment of the present application, the first annular protrusion 141 of the needle shaft 10 is interference-fitted with the tail plug 50, which can better prevent the tail plug 50 from falling off from the connecting end 14, thereby preventing the needle shaft 10 from falling off from the needle tube 30 during the sliding process, thereby extending the service life of the ejector pin 100. In addition, the sealing ring 20 is used to seal the gap between the first sliding portion 12 of the needle shaft 10 and the inner wall 34 of the needle tube 30, thereby improving the waterproof, dustproof and oilproof performance of the ejector pin 100, preventing water, dust and oil from entering the accommodating cavity 31, and improving the quality of the ejector pin 100.

[0033] In the related art, the interior of the ejector pins in some electronic cigarettes is a through-hole structure, which may make the ejector pin unable to be oil-proof, waterproof or smoke-proof. Long-term accumulation of dirt may cause foreign particles, water and smoke oil inside the ejector pin, affecting the performance of the ejector pin, thereby shortening the life of the ejector pin and even the electronic cigarette.

[0034] When the ejector pin 100 provided in the embodiment of the present application is used in an electronic cigarette, the sealing ring 20 cooperates with the first sliding portion 12 and the accommodating chamber 31, and the sealing effect of the sealing ring 20 can prevent foreign liquids, dust, smoke particles and other impurities from invading the accommodating chamber 31, thereby increasing the impedance of the ejector pin 100 and affecting the working performance of the electronic cigarette, and can also prevent foreign liquids, dust, smoke particles and other impurities from invading the accommodating chamber 31, thereby causing damage to the internal circuit and even corrosion to the electronic cigarette. The setting of the sealing ring 20 can not only ensure the working performance of the ejector pin 100 and the electronic cigarette, but also extend the service life of the ejector pin 100 and the electronic cigarette.

[0035] It is understandable that when the ejector pin 100 provided in the implementation of the present application is used in other electronic devices, it can also play the role of being waterproof, dustproof, and oilproof.

[0036] Among them, the needle shaft 10, the needle tube 30 and the tail plug 50 can be made of copper materials, such as brass, beryllium copper or phosphor bronze, etc., without limitation. In addition, the surfaces of the needle shaft 10, the needle tube 30 and the tail plug 50 can be gold-plated, which can reduce the impedance of the ejector pin 100 and improve the conductive performance of the ejector pin 100. Among them, the sealing ring 20 can be made of materials such as silicone or rubber, without limitation.

[0037] The needle tube 30 may include a first opening 32 and a second opening 33, and the first opening 32 is coaxially arranged with the second opening 33. The contact end 11 of the needle shaft 10 is exposed through the first opening 32, and the connection end 14 is exposed through the second port. The first sliding portion 12 is inserted into the first opening 32, and the outer wall 121 of the first sliding portion 12 is in sliding contact with the inner wall 34 at the first opening 32. The second sliding portion 13 is inserted into the second opening 33, and the outer wall 121 of the second sliding portion 13 is in sliding contact with the inner wall 34 at the second opening 33. When the ejector pin 100 provided in the embodiment of the present application is used for an electronic cigarette, the sealing ring 20 can isolate external liquids, dust or smoke particles at the first opening 32, so that impurities will not leak from the second opening 33, thereby preventing impurities from damaging the internal circuit or even the electronic cigarette.

[0038] When the contact end 11 of the needle head contacts and is pressed against the external electronic component, the external electronic component presses the needle shaft 10 so that the contact end 11, the first sliding part 12, the second sliding part 13, the connecting end 14 and the tail plug 50 slide along the axial direction of the needle tube 30 toward the second opening 33, and the needle shaft 10 contacts and conducts with the needle tube 30 through the first sliding part 12 and the second sliding part 13, thereby realizing the function of transmitting current. The tail plug 50 is a stopper of the needle shaft 10, and the tail plug 50 is sleeved on the connecting end 14 through the plug hole 51, and the outer diameter of the plug hole 51 of the tail plug 50 is larger than the inner diameter of the second opening 33. When the pressing force on the contact end 11 is removed, the elastic member 40 acts on the force generated by the second sliding portion 13 to restore the deformation, so that the contact end 11, the first sliding portion 12, the second sliding portion 13, the connecting end 14 and the tail plug 50 slide along the axial direction of the needle tube 30 toward the first opening 32. The function of the tail plug 50 is to ensure that the needle shaft 10 will not be separated from the axial direction of the needle tube 30 and through the first opening 32 during this process. Among them, since the first annular protrusion 141 of the connecting end 14 and the insertion hole 51 of the tail plug 50 are interference fit, the tail plug 50 will not fall off from the connecting end 14, thereby ensuring that the tail plug 50 can always prevent the needle shaft 10 from falling off from the needle tube 30.

[0039] During the use of the ejector pin 100, the first opening 32 is set for the electronic components facing the outside, so water vapor, dust and oil can easily enter the accommodating chamber 31 from the first opening 32. By setting a sealing ring 20 between the first sliding portion 12 and the inner wall 34 of the needle tube 30 at the first opening 32, water vapor, dust and oil can be isolated from the first opening 32, so as to prevent water vapor, dust and oil from flowing into the accommodating chamber 31, affecting the elastic member 40 and flowing out through the second opening 33 to cause damage to the external circuit. In some embodiments, the ejector pin 100 can be used for electronic cigarettes. If the cigarette cartridge leaks oil, the oil enters the accommodating chamber 31, causing the impedance of the ejector pin 100 to increase.

[0040] In the ejector pin 100 implemented in the present application, the elastic member 40 may be a spring. Of course, in other embodiments, the elastic member 40 may also be an elastic column or a spring sheet, etc., and is not limited thereto.

[0041] See also Figure 4 In some embodiments, the end face 111 of the contact end 11 of the needle shaft 10 is a plane. In this way, the contact end 11 is set as a plane so that the needle shaft 10 has a larger conductive area. When used as a connection electrode, it can effectively contact the conductive end face 111 to maintain the crimping stability and conductivity of the needle shaft 10. Among them, the end face 111 of the contact end 11 of the needle shaft 10 is a plane, and the circumferential connection between the contact end 11 and the side wall of the first sliding part 12 is a rounded corner.

[0042] See also Figure 3In some embodiments, the end surface 111 of the contact end 11 of the needle shaft 10 is a hemispherical arc surface. In this way, the end surface 111 of the contact end 11 is a hemispherical arc surface, which can improve the contact smoothness between the contact end 11 and the external electronic components and avoid scratching other peripheral components.

[0043] See also Figure 2 and Figure 3 In some embodiments, a circle of mounting grooves 15 are formed on the first sliding portion 12, and the sealing ring 20 is embedded in the mounting grooves 15. In this way, when installing, the sealing ring 20 is first put into the mounting grooves 15 of the first sliding portion 12, so that the needle shaft 10 and the sealing ring 20 can be installed in the needle tube 30 at the same time, and the sealing ring 20 can effectively realize the waterproof, dustproof and oilproof functions in the accommodating cavity 31 of the needle tube 30.

[0044] Specifically, during installation, the sealing ring 20 is first sleeved into the installation groove 15 on the first sliding part 12. When the needle shaft 10 is inserted into the accommodating cavity 31 through the first opening 32 of the needle tube 30, the sealing ring 20 can be inserted into the accommodating cavity 31 through the elastic deformation of the sealing ring 20, thereby completing the assembly of the needle shaft 10, the needle tube 30 and the sealing ring 20. It can be understood that in order to ensure the sealing effect, the depth of the installation groove 15 is less than the thickness of the sealing ring 20, so that the sealing ring 20 and the inner wall 34 of the needle tube 30 are in good contact.

[0045] See also Figure 5 In some embodiments, the inner wall 34 of the needle tube 30 is provided with a circle of mounting grooves 15 on one side close to the first sliding portion 12, and the sealing ring 20 is embedded in the mounting grooves 15. In this way, the mounting grooves 15 are provided inside the needle tube 30, and the sealing ring 20 is first accommodated in the mounting grooves 15 during installation, and the needle shaft 10 can be installed in the accommodating cavity 31 through the first opening 32, which is convenient for installation.

[0046] Specifically, during installation, the sealing ring 20 is first put into the installation groove 15 on the first sliding part 12. In the process of inserting the needle shaft 10 into the accommodating chamber 31 through the first opening 32 of the needle tube 30, the sealing ring 20 can be elastically deformed so that the sealing ring 20 can be inserted into the accommodating chamber 31, thereby completing the assembly of the needle shaft 10, the needle tube 30 and the sealing ring 20.

[0047] In some embodiments, the gap between the outer wall 121 of the first sliding portion 12 and the inner wall 34 of the needle tube 30 is 0.01 mm to 0.05 mm. In this way, the gap between the outer wall 121 of the first sliding portion 12 and the inner wall 34 of the needle tube 30 is controlled within the range of 0.01 mm to 0.05 mm, which ensures that the needle shaft 10 can slide normally in the needle tube 30 while preventing the sealing ring 20 from failing to seal the first sliding portion 12 and the accommodating cavity 31 of the needle tube 30.

[0048] Specifically, the gap between the outer wall 121 of the first sliding part 12 and the inner wall 34 of the needle tube 30 can be 0.01mm, 0.02mm, 0.03mm, 0.04mm or 0.05mm, etc., or the gap between the outer wall 121 of the first sliding part 12 and the inner wall 34 of the needle tube 30 can be any value within the numerical range defined by any two of the above numerical values.

[0049] When the gap between the outer wall 121 of the first sliding part 12 and the inner wall 34 of the needle tube 30 is less than 0.01 mm, the first sliding part 12 is difficult to slide up and down along the axial direction of the needle tube 30 due to the small gap, making the pressing and sliding process of the needle shaft 10 not smooth enough.

[0050] When the gap between the outer wall 121 of the first sliding portion 12 and the inner wall 34 of the needle tube 30 is greater than 0.05 mm, the inner wall 34 of the needle tube 30 and the sealing ring 20 will not interfere with each other, thereby causing the sealing effect of the sealing ring 20 to fail, and water, dust, oil, etc. will enter the accommodating cavity 31 and affect the operation of the ejector 100.

[0051] See also Figure 3 In some embodiments, a circular flange 35 protruding outward is formed on one side of the needle tube 30 near the contact end 11. In this way, the circular flange 35 can increase the structural strength of the needle tube 30 and prevent the first opening 32 of the needle tube 30 from being deformed when the needle shaft 10 is pressed and slides downward.

[0052] Specifically, the annular flange 35 can increase the tube wall thickness of the needle tube 30 at the first opening 32. After the external force pressing the needle shaft 10 completely presses the contact end 11 and the first sliding portion 12 of the needle shaft 10 into the accommodating cavity 31 of the needle tube 30, the force will act on the first opening 32 of the needle tube 30. By providing the annular flange 35, the structural strength of the needle tube 30 at the first opening 32 is improved, thereby preventing the first opening 32 of the needle tube 30 from being deformed after being subjected to external force.

[0053] See also Figure 5 In some embodiments, the inner wall 34 of the needle tube 30 is provided with a circle of mounting grooves 15 on the side close to the first sliding portion 12, and the sealing ring 20 is embedded in the mounting groove 15. Part of the mounting groove 15 is located in the annular flange 35. The annular flange 35 can strengthen the strength of the needle tube 30 provided with the mounting groove 15, and prevent the needle tube 30 from being deformed after being subjected to external force at the first opening 32 and the mounting groove 15.

[0054] See also Figure 3In some embodiments, the outer diameter of the first sliding portion 12 is greater than the outer diameter of the second sliding portion 13, and the elastic member 40 abuts against the bottom of the first sliding portion 12. In this way, the first sliding portion 12 can limit the elastic member 40 to prevent the elastic member 40 from falling off along the second sliding portion 13, the first sliding portion 12 and the contact end 11 during the sliding process of the needle shaft 10.

[0055] See also Figure 3 In some embodiments, a flange 36 is provided on one side of the needle tube 30 near the connecting end 14, and the flange 36 extends in the radial direction of the needle tube 30 toward the second sliding portion 13, and one end of the elastic member 40 abuts against the flange 36, and the other end of the elastic member 40 abuts against the first sliding portion 12. In this way, when the needle shaft 10 is pressed and slides downward, the flange 36 can prevent the first sliding portion 12 from squeezing the elastic member 40 out of the needle tube 30 through the second opening 33.

[0056] Specifically, the flange 36 can enclose and form the second opening 33. The setting of the flange 36 can reduce the diameter of the original second opening 33, so that the second sliding part 13 and the connecting end 14 can pass through the second opening 33, while the elastic member 40 sleeved on the second sliding part 13 will be restricted by the flange 36 and cannot pass through the second opening 33. In the absence of external force, one end of the elastic member 40 abuts against the bottom of the first sliding part 12, and the other end of the elastic member 40 abuts against the top of the flange 36. When the contact end 11 is subjected to an external force, the first sliding part 12, the second sliding part 13, the connecting end 14 and the tail plug 50 are driven to slide along the axial direction of the needle tube 30 toward the second opening 33. One end of the elastic member 40 is subjected to the force of the first sliding part 12, and the other end is restricted by the flange 36, so that the elastic member 40 cannot slide out of the second opening 33, thereby undergoing elastic deformation.

[0057] See also Figure 6 In some embodiments, a first limiting groove 122 is formed on the side of the first sliding portion 12 close to the second sliding portion 13, and a second limiting groove 361 is formed on the side of the flange 36 away from the tail plug 50. One end of the elastic member 40 is accommodated in the first limiting groove 122, and the other end is accommodated in the second limiting groove 361. In this way, the first limiting groove 122 and the second limiting groove 361 can limit the position of the elastic member 40, and prevent the elastic member 40 from swinging relative to the axial direction of the needle tube 30. It is ensured that the elastic member 40 is more stable and works more reliably during the elastic expansion and contraction process.

[0058] See also Figure 7The connector module 1000 provided in the embodiment of the present application includes a connector 200 and any of the ejector pins 100 described above, and the connector 200 is provided with a plurality of installation holes 201 arranged at intervals. The ejector pins 100 correspond to the installation holes 201 one by one, and a plurality of ejector pins 100 are installed in the installation holes 201. Since the connector module 1000 adopts the ejector pins 100 of the embodiment of the present application, it has at least all the beneficial effects brought by the technical solutions of the above embodiments.

[0059] Among them, the connector module 1000 can form a modular structure, and the connector module 1000 can be directly installed on the external device as a conductive connection interface. By making the connector module 1000 modular, it can be easily assembled and the assembly efficiency can be improved. In addition, the connector module 1000 can be standardized so that it can be applied to a variety of devices to improve versatility.

[0060] Specifically, the needle tube 30 of the ejector pin 100 can extend into the mounting hole 201. The plurality of ejector pins 100 of any of the above items can be two, three, four, etc., which is not limited here, and the number of ejector pins 100 can be selected according to actual needs. It should be noted that in addition to the ejector pin 100 provided in the embodiment of the present application, other types of ejector pins 100 can also be installed on the connector 200 at the same time.

[0061] See also Figure 6 In some embodiments, the outer wall of the needle tube 30 is formed with a second annular protrusion 37 along the radial direction of the needle tube 30, and the second annular protrusion 37 is interference-fitted with the mounting hole 201. In this way, by providing an interference fit with the mounting hole 201 on the outer wall of the needle tube 30, the ejector pin 100 can be prevented from falling off from the mounting hole 201, thereby ensuring the stability of the connector module 1000 during use.

[0062] The ejector pin and connector module provided in the embodiment of the present application are introduced in detail above. Specific examples are used herein to illustrate the principle and implementation method of the present application. The description of the above embodiments is only used to help understand the present application. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A ejector pin, characterized in that: include: A needle shaft, the needle shaft comprising a contact end, a first sliding portion, a second sliding portion and a connecting end connected in sequence, the connecting end being formed with a first annular protrusion along the radial direction of the needle shaft; A sealing ring, wherein the sealing ring is sleeved on the first sliding part; A needle tube, wherein a receiving cavity is formed inside the needle tube, a first sliding portion, a second sliding portion and the sealing ring are slidably arranged in the receiving cavity along the axial direction of the needle tube, and the contact end and the connecting end protrude from the needle tube; an elastic member, the elastic member being sleeved on the second sliding portion and disposed in the accommodating cavity; and A tail plug is located on the outside of the needle tube and is formed with a plug hole. The first annular protrusion is interference fit with the plug hole. The tail plug is used to prevent the needle shaft from falling out of the needle tube.

2. The ejector pin according to claim 1, characterized in that: The end surface of the contact end of the needle shaft is a plane.

3. The ejector pin according to claim 1, characterized in that: A circle of mounting groove is formed on the first sliding part, and the sealing ring is embedded in the mounting groove.

4. The ejector pin according to claim 1, characterized in that: The inner wall of the needle tube is provided with a circle of mounting grooves at one side close to the first sliding part, and the sealing ring is embedded in the mounting grooves.

5. The ejector pin according to claim 1, characterized in that: The gap between the outer wall of the first sliding part and the inner wall of the needle tube is 0.01 mm to 0.05 mm.

6. The ejector pin according to claim 1, characterized in that: A circular convex edge protruding outward is formed on one side of the needle tube close to the contact end.

7. The ejector pin according to claim 1, characterized in that: The outer diameter of the first sliding part is greater than the outer diameter of the second sliding part, and the elastic member abuts against the bottom of the first sliding part.

8. The ejector pin according to claim 1, characterized in that: A flange is provided on one side of the needle tube close to the connecting end, and the flange extends along the radial direction of the needle tube toward the second sliding part. One end of the elastic member abuts against the flange, and the other end of the elastic member abuts against the first sliding part.

9. A connector module, characterized in that: include: A connecting piece, wherein the connecting piece is formed with a plurality of mounting holes arranged at intervals; A plurality of ejector pins according to any one of claims 1 to 8, wherein the ejector pins correspond to the mounting holes one by one, and a plurality of the ejector pins are installed in the mounting holes.

10. The connector module according to claim 9, characterized in that: A second annular protrusion is formed on the outer wall of the needle tube along the radial direction of the needle tube, and the second annular protrusion is interference-fitted with the mounting hole.

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