Ejector pin and electronic equipment

Abstract

The utility model provides an ejector pin and electronic equipment, and the ejector pin comprises a needle tube which comprises a main body part and a protruding part, the main body part is provided with a containing cavity and a first opening which communicate with each other, and the protruding part is arranged on the side, away from the first opening, of the main body part in a protruding mode; the elastic piece is arranged in the accommodating cavity; at least part of the ball is installed in the containing cavity, one end of the ball abuts against the elastic piece, the other end of the ball can stretch out of the first opening, and the ball can stretch out and draw back in the axial direction of the needle tube and can rotate relative to the needle tube. According to the ejector pin, the ball serves as the pin head, the ball can rotate relative to the conductive component, sliding friction cannot be generated in the rotating process, damage to a surface coating of the conductive component is reduced, the conductive component can be provided with the limiting groove corresponding to the ball, the ball is clamped in the limiting groove, and the ball is prevented from moving or disengaging when subjected to external force; and if the balls are required to be separated from the limiting grooves, the limiting grooves can also provide resistance to play a role similar to damping.

Description

Technical Field

[0001] The present application relates to the field of electronic technology, and in particular to a ejector pin and an electronic device. Background Art

[0002] Ejector pins are components used to achieve electrical connections. They are often used in electronic devices, especially in situations where frequent plugging and unplugging is required or where the connection stability is maintained in a dynamic environment. In related technologies, the connection between the needle tip of the ejector pin and the pressing object is usually point-to-point. When the spring pin and the pressing object move relative to each other, the needle tip may be subjected to a large torque force, which may cause the needle tip to bend, break or deform, thereby affecting the stability and reliability of the electrical connection. Utility Model Content

[0003] The embodiments of the present application provide a ejector pin and an electronic device, wherein the ejector pin can improve the stability of the electrical connection of the ejector pin.

[0004] In a first aspect, an embodiment of the present application provides a ejector pin, comprising:

[0005] The needle tube comprises a main body and a protruding part, wherein the main body is provided with a receiving cavity and a first opening which are communicated with each other, and the protruding part is convexly arranged on a side of the main body away from the first opening;

[0006] An elastic member, disposed in the accommodating cavity;

[0007] A ball is at least partially installed in the accommodating cavity, one end of the ball abuts against the elastic member, and the other end of the ball can extend from the first opening. The ball can telescope along the axial direction of the needle tube, and the ball can rotate relative to the needle tube.

[0008] In one embodiment, the main body portion includes a top away from the protrusion, the top includes a first inner wall facing the accommodating cavity and a blocking portion, the first inner wall is provided with the blocking portion protruding toward the first opening, the blocking portion is arranged around the first opening, and the diameter of the blocking portion is smaller than the diameter of the ball.

[0009] In one embodiment, the blocking portion includes a hypotenuse toward the protrusion and a top edge away from the protrusion, the hypotenuse is inclined from the first inner wall toward away from the protrusion and toward the first opening, one end of the hypotenuse is connected to the first inner wall, and the other end of the hypotenuse is connected to the top edge; or

[0010] The blocking portion includes an arc edge toward the protrusion and a top edge away from the protrusion, the arc edge is bent from the first inner wall toward away from the protrusion and toward the first opening, one end of the arc edge is connected to the first inner wall, and the other end of the arc edge is connected to the top edge.

[0011] In one embodiment, a surface of the top portion away from the protrusion is flush with the top edge.

[0012] In one embodiment, the main body portion also includes a tubular body portion connected to the top portion toward the protrusion, the tubular body portion includes a second inner wall facing the accommodating cavity, the second inner wall and the first inner wall are coplanar, and the thickness of the tubular body portion is less than the thickness of the top portion.

[0013] In one embodiment, the main body includes a bottom edge arranged opposite to the first opening, the bottom edge is connected to the protrusion, and along the radial direction of the main body, the size of the protrusion is smaller than the size of the bottom edge.

[0014] In one embodiment, a conical groove is provided on the bottom side facing the first opening, the size of the conical groove gradually decreases in a direction away from the first opening, one end of the elastic member abuts against the conical groove, and the other end of the elastic member abuts against the ball. The conical groove extends to the protrusion.

[0015] In one embodiment, the tapered groove extends to the protrusion.

[0016] In a second aspect, an embodiment of the present application further provides an electronic device, including:

[0017] a first conductive member and a second conductive member;

[0018] A ejector pin, such as the ejector pin described in any of the above embodiments, wherein the protrusion is electrically connected to the first conductive component, and the ball is electrically connected to the second conductive component.

[0019] In one embodiment, the second conductive component is provided with a limiting groove corresponding to the ball, and the ball is clamped in the limiting groove.

[0020] The ejector pin of the embodiment of the present application can realize the electrical connection of two conductive parts through the protrusions and balls at both ends. Among them, the main body of the needle tube includes a accommodating cavity and a first opening, and the ball can move along the axial direction of the needle tube and can rotate relative to the needle tube. The elastic member is arranged in the accommodating cavity to provide the necessary elastic force for the ball so that it can axially retract and rotate. The ejector pin uses a ball as a needle head, and the ball can adapt to the action of rotating while pressing down. Even if there is a small misalignment or vibration during the connection, the ball can also rotate with the rotation action, which enables the ejector pin to withstand forces and torques in different directions to achieve a stable electrical connection, and the ball can rotate relative to the conductive part. What is generated during the rotation is rolling friction, not sliding friction. The coefficient of rolling friction is much lower than that of sliding friction, so the friction force generated is small, thereby reducing the damage to the surface coating of the conductive part and avoiding the increase of contact resistance due to coating damage. The conductive component can be provided with a limiting groove corresponding to the ball, and the ball can be clamped in the limiting groove. The limiting groove provides a precise position for the ball, ensuring that the ball maintains correct alignment and positioning when in contact with the conductive component, and the limiting groove can physically fix the ball to prevent the ball from moving or detaching when subjected to external force. If the ball is about to detach from the limiting groove, the limiting groove can also provide a resistance, playing a role similar to damping, thereby ensuring the stability of the electrical connection of the ejector pin. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 A schematic diagram of the structure of the ejector pin provided in an embodiment of the present application.

[0023] Figure 2 for Figure 1 The cross-sectional view of the ejector pin along the AA direction is shown.

[0024] Figure 3 for Figure 1 Schematic diagram of the structure of the needle tube part of the ejector pin shown.

[0025] Figure 4 for Figure 1 Schematic diagram of the partial structure of the ejector pin shown.

[0026] Figure 5 for Figure 4 A partial enlarged view of part B of the ejector pin is shown. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise stated, the directional words such as "upper" and "lower" used generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.

[0028] The present application embodiment provides a ejector pin 10, which is described below in conjunction with the accompanying drawings. Figure 1 and Figure 2 , Figure 1 A schematic diagram of the structure of the ejector pin provided in the embodiment of the present application, Figure 2 for Figure 1 The cross-sectional view of the ejector pin along the AA direction is shown. Figure 3 for Figure 1 The schematic diagram of the needle tube structure of the ejector shown. The ejector 10 provided in the embodiment of the present application includes a needle tube 100, an elastic member 200 and a ball 300. The needle tube 100 includes a main body 110 and a protrusion 130. The main body 110 is provided with a receiving cavity 111 and a first opening 112 which are interconnected. The protrusion 130 is convexly arranged on the side of the main body 110 away from the first opening 112; the elastic member 200 is arranged in the receiving cavity 111; the ball 300 is at least partially installed in the receiving cavity 111, one end of the ball 300 abuts against the elastic member 200, and the other end of the ball 300 can extend from the first opening 112. The ball 300 can telescopically move along the axial direction of the needle tube 100, and the ball 300 can rotate relative to the needle tube 100. The elastic member 200 can be, for example, a spring. In addition to the spring, it can also be other types of elastic members, such as elastic polymers, rubber washers, etc., which are not limited in this embodiment.

[0029] The ejector pin 10 of this embodiment can realize the electrical connection of two conductive components through the protrusions 130 and the ball 300 at both ends. Exemplarily, the first conductive component is connected through the protrusion 130, and the second conductive component is connected through the ball 300 to realize the electrical connection of the two conductive components. Among them, the main body 110 of the needle tube 100 includes a accommodating cavity 111 and a first opening 112, and the ball 300 can move along the axial direction of the needle tube 100 and can rotate relative to the needle tube 100. The elastic member 200 is arranged in the accommodating cavity 111 to provide the necessary elastic force for the ball 300 so that it can axially retract and rotate. When the ejector pin 10 is used to connect two conductive components, the ball 300 can be rolled and confined in the limiting groove of one of the conductive components, wherein the limiting groove can match the ball 300 to limit the ball 300 to ensure that a stable electrical connection is maintained between the ejector pin 10 and the conductive component. Specifically, the ball 300 is located in the accommodating cavity 111 in an initially unpressed state, with one end abutting against the elastic member 200 and the other end extending out of the first opening 112. When the conductive component contacts the protruding portion of the ball 300, the ball 300 moves along the axial direction of the needle tube 100 under the pressure of the conductive component, and abuts against the limiting groove after entering the limiting groove of the conductive component, and the elastic force provided by the elastic member 200 keeps the ball 300 in the limiting groove, that is, the rolling card is set in the limiting groove, so that the ejector pin 10 can maintain a stable electrical connection with the conductive component through the ball 300.

[0030] The ejector pin 10 in this embodiment uses a ball 300 as a needle head. The ball 300 can adapt to the action of pressing down and rotating at the same time. Even if there is a small misalignment or vibration during connection, the ball 300 can rotate with the rotation action, which enables the ejector pin 10 to withstand forces and torques in different directions to achieve a stable electrical connection. In addition, the ball can rotate relative to the conductive component. During the rotation process, the ball 300 generates rolling friction rather than sliding friction. The coefficient of rolling friction is much lower than that of sliding friction, so the friction force generated is small, thereby reducing the damage to the surface coating of the conductive component. To prevent the contact resistance from increasing due to damage to the coating, the conductive component can be provided with a limiting groove corresponding to the ball 300, and the ball 300 can be clamped in the limiting groove. The limiting groove provides a precise position for the ball 300, ensuring that the ball 300 maintains correct alignment and positioning when in contact with the conductive component, and the limiting groove can physically fix the ball 300 to prevent the ball 300 from moving or detaching when subjected to external force. If the ball 300 is to detach from the limiting groove, the limiting groove can also provide a resistance, playing a role similar to damping, thereby ensuring the stability of the electrical connection of the ejector pin 10.

[0031] In some embodiments, the main body 110 includes a top 140 away from the protrusion 130, the top 140 includes a first inner wall 141 facing the accommodating cavity 111 and a blocking portion 150, the first inner wall 141 is provided with a blocking portion 150 protruding toward the first opening 112, the blocking portion 150 is arranged around the first opening 112, and the diameter of the blocking portion 150 is smaller than the diameter of the ball 300.

[0032] Among them, the design of the first inner wall 141 and the blocking portion 150 in the main body 110 helps to guide the ball 300 and ensure its telescopic movement on the correct path. In addition, the diameter of the blocking portion 150 is smaller than the diameter of the ball 300, which ensures that the ball 300 will not escape from the first opening 112 during normal use, helps to optimize the connection performance between the ball 300 and the conductive component, and improves the stability and reliability of the electrical connection.

[0033] In some embodiments, please refer to Figure 5 and Figure 5 , Figure 4 for Figure 1 The schematic diagram of the partial structure of the ejector pin is shown. Figure 5 for Figure 4 The blocking portion 150 includes a bevel 151 facing the protrusion 130 and a top edge 152 away from the protrusion 130, the bevel 151 is inclined from the first inner wall 141 to the first opening 112 away from the protrusion 130, one end of the bevel 151 is connected to the first inner wall 141, and the other end of the bevel 151 is connected to the top edge 152; or the blocking portion 150 includes an arc edge 153 facing the protrusion 130 and a top edge 152 away from the protrusion 130, the arc edge 153 is bent from the first inner wall 141 to the first opening 112 away from the protrusion 130, one end of the arc edge 153 is connected to the first inner wall 141, and the other end of the arc edge 153 is connected to the top edge 152.

[0034] It can be understood that the first inner wall 141 forms a portion of the accommodating cavity 111 , the diameter of which portion of the accommodating cavity 111 is not less than the diameter of the ball 300 , which provides sufficient space for the ball 300 to axially expand and contract, thereby ensuring its freedom of movement. Exemplarily, the blocking portion 150 may include a hypotenuse 151 and a top edge 152, wherein the hypotenuse 151 extends obliquely from the first inner wall 141 to the top edge 152 and is inclined toward the first opening 112, so that the diameter of the blocking portion 150 gradually decreases toward the first opening 112, so that the diameter of the blocking portion 150 is smaller than the diameter of the ball 300; in another example, the blocking portion 150 may include an arc edge 153 or a top edge 152, wherein the arc edge 153 extends from the first inner wall 141 to the top edge 152 and is bent toward the first opening 112, so that the diameter of the blocking portion 150 gradually decreases, so that the diameter of the blocking portion 150 is smaller than the diameter of the ball 300; when the ball 300 is telescoped to the farthest end, the top edge 152 can provide necessary support and restriction to ensure that the ball 300 will not fall out of the first opening 112 during the telescopic movement.

[0035] It should be noted that the oblique edge 151 or arc edge 153 of the blocking portion 150 can be directly connected or indirectly connected to the top edge 152. When indirectly connected, the blocking portion 150 further includes a connecting edge 154 arranged parallel to the first inner wall 141. The oblique edge 151 or arc edge 153 extends obliquely from the first inner portion to the connecting edge 154, and then the connecting edge 154 is connected to the top edge 152. In this embodiment, the shape and size of the oblique edge 151 and the top edge 152 can be adjusted to accommodate balls 300 of different sizes.

[0036] In some embodiments, the surface of the top 140 away from the protrusion 130 is flush with the top edge 152. The surface of the top 140 and the top edge 152 are flush, so that there is a smooth transition from the surface of the top 140 to the top edge 152. When the ejector pin 10 is in use, the ball 300 is compressed into the accommodating cavity 111, and the elastic force of the elastic member 200 maintains the pressure between the ball 300 and the conductive component, thereby maintaining the electrical connection with the conductive component. After the ball 300 is compressed into the accommodating cavity 111, the flush surface can make the surface of the top 140 and the top edge 152 of the top 140 contact with the conductive component. The entire contact surface can evenly transfer current, and the uniform contact pressure helps to improve the stability of the electrical connection, and also avoids the stress concentration problem caused by the uneven surface of the top 140 and the top edge 152, which helps to improve the reliability of the long-term operation of the ejector pin 10.

[0037] In some embodiments, the main body 110 also includes a tubular body portion 160 connected to the top 140 toward the protrusion 130, the tubular body portion 160 includes a second inner wall 161 facing the accommodating cavity, the second inner wall 161 and the first inner wall 141 are coplanar, and the thickness of the tubular body portion 160 is less than the thickness of the top 140.

[0038] The main body 110 further includes a tube body 160, and the second inner wall 161 of the tube body 160 and the first inner wall 141 of the top 140 are coplanar, so that the accommodating cavity formed by the first inner wall 141 and the second inner wall 161 is coherent and consistent, which helps to maintain the correct positioning and smooth movement of the internal elastic member 200 and the ball 300. When the ejector pin 10 is in use, the top 140 abuts against the conductive component. The thicker top 140 helps to maintain a stable electrical connection and can withstand the mechanical stress that may be encountered during the connection or disconnection process to avoid deformation. The relatively thin tube body 160 helps to optimize the utilization of the internal space, making the connector more compact and suitable for use in scenarios with limited space.

[0039] In some embodiments, the main body 110 includes a bottom edge 113 disposed opposite to the first opening 112 , the bottom edge 113 is connected to the protrusion 130 , and along the radial direction of the main body 110 , the size of the protrusion 130 is smaller than that of the bottom edge 113 .

[0040] When the ejector pin 10 is in use, the electrical connection between the two conductive components is achieved through the contact between the ball 300 and one conductive component and the contact between the protrusion 130 and the other conductive component. The size of the protrusion 130 is smaller than the size of the bottom edge 113. The smaller protrusion 130 occupies less space and can be flexibly arranged in the mounting groove on the conductive component, which helps to maintain the position of the connector on the conductive component and prevent accidental disconnection.

[0041] In some embodiments, a conical groove 170 is provided on the side of the bottom edge 113 facing the first opening 112 , and the size of the conical groove 170 gradually decreases in the direction away from the first opening 112 . One end of the elastic member 200 abuts against the conical groove 170 , and the other end of the elastic member 200 abuts against the ball 300 .

[0042] Among them, the size of the conical groove 170 gradually decreases in the direction away from the first opening 112, one end of the elastic member 200 abuts against the conical groove 170, and the other end abuts against the ball 300, which helps the elastic member 200 to maintain a fixed position in the conical groove 170, and the elastic member 200 applies force to the ball 300 through the conical groove 170. The conical groove 170 helps to more accurately transmit the force generated by the elastic member 200 to the ball 300, ensuring that the ball 300 receives uniform thrust, thereby realizing the axial telescopic movement of the ball 300 and ensuring a stable electrical connection.

[0043] In some embodiments, the tapered groove 170 extends to the protrusion 130 , and this continuous structure may enhance the stability of the entire connector.

[0044] An embodiment of the present application further provides an electronic device, comprising a first conductive component, a second conductive component, and the ejector pin 10 of any of the above embodiments, wherein the protrusion 130 is electrically connected to the first conductive component, and the ball 300 is electrically connected to the second conductive component.

[0045] The electronic device can use the ejector pin 10 to electrically connect the first conductive component and the second conductive component. Specifically, the first conductive component is connected through the protrusion 130 of the ejector pin 10, and the second conductive component is connected through the ball 300 of the ejector pin 10, so that the electrical connection of the two conductive components can be achieved through one ejector pin 10, which helps to simplify the design and reduce space occupation. In addition, since the ejector pin 10 is easy to operate, the conductive components can be quickly disconnected and reconnected, reducing maintenance time and complexity.

[0046] In some embodiments, the second conductive component is provided with a limiting groove corresponding to the ball 300, and the ball 300 is clamped in the limiting groove. The limiting groove on the second conductive component provides a precise position and a stable support for the ball 300, ensuring a reliable electrical connection with the second conductive component. The design of the ball 300 allows a certain degree of axial movement and rotation, so that the ejector pin 10 can adapt to different connection directions and angles. Specifically, the ball 300 is located in an initially unpressed state, located in the accommodating cavity 111, one end abuts against the elastic member 200, and the other end extends out of the first opening 112. When the second conductive component contacts the protruding part of the ball 300, the ball 300 moves along the axial direction of the needle tube 100 under the pressure of the second conductive component, and after entering the limiting groove of the second conductive component, it abuts against the limiting groove, and the elastic force provided by the elastic member 200 keeps the ball 300 in the limiting groove, that is, the rolling card is arranged in the limiting groove, and the limiting groove corresponds to the size of the ball 300, and the limiting groove and the ball 300 maintain sufficient contact, so that the ball can maintain a stable electrical connection with the second conductive component through the ball 300.

[0047] In some embodiments, the first conductive component may be provided with a mounting groove, and the protrusion 130 may be inserted into the mounting groove to achieve physical fixation and electrical connection. Furthermore, a soldering pad may be provided near the mounting groove. By welding the protrusion 130 to the soldering pad, a more stable and reliable electrical connection may be achieved, thereby preventing the ejector pin 10 from shifting or falling off during use.

[0048] The ejector pin and the electronic device provided in the embodiments of the present application are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. 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 methods 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: The needle tube comprises a main body and a protruding part, wherein the main body is provided with a receiving cavity and a first opening which are communicated with each other, and the protruding part is convexly arranged on a side of the main body away from the first opening; An elastic member, disposed in the accommodating cavity; A ball is at least partially installed in the accommodating cavity, one end of the ball abuts against the elastic member, and the other end of the ball can extend from the first opening. The ball can telescope along the axial direction of the needle tube, and the ball can rotate relative to the needle tube.

2. The ejector pin according to claim 1, characterized in that: The main body includes a top away from the protrusion, the top includes a first inner wall facing the accommodating cavity and a blocking portion, the first inner wall is protruding with the blocking portion toward the first opening, the blocking portion is arranged around the first opening, and the diameter of the blocking portion is smaller than the diameter of the ball.

3. The ejector pin according to claim 2, characterized in that: The blocking portion includes a hypotenuse toward the protrusion and a top edge away from the protrusion, the hypotenuse is inclined from the first inner wall toward the first opening away from the protrusion, one end of the hypotenuse is connected to the first inner wall, and the other end of the hypotenuse is connected to the top edge; or The blocking portion includes an arc edge toward the protrusion and a top edge away from the protrusion, the arc edge is bent from the first inner wall toward away from the protrusion and toward the first opening, one end of the arc edge is connected to the first inner wall, and the other end of the arc edge is connected to the top edge.

4. The ejector pin according to claim 3, characterized in that: A surface of the top portion away from the protrusion is flush with the top edge.

5. The ejector pin according to claim 2, characterized in that: The main body also includes a tubular body connected to the top and facing the protrusion, the tubular body includes a second inner wall facing the accommodating cavity, the second inner wall is coplanar with the first inner wall, and the thickness of the tubular body is less than the thickness of the top.

6. The ejector pin according to claim 1, characterized in that: The main body portion includes a bottom edge arranged opposite to the first opening, the bottom edge is connected to the protrusion, and along the radial direction of the main body portion, the size of the protrusion is smaller than the size of the bottom edge.

7. The ejector pin according to claim 6, characterized in that: A conical groove is provided on the bottom edge facing the first opening, and the size of the conical groove gradually decreases in a direction away from the first opening. One end of the elastic member abuts against the conical groove, and the other end of the elastic member abuts against the ball.

8. The ejector pin according to claim 7, characterized in that: The tapered groove extends to the protrusion.

9. An electronic device, characterized in that: include: a first conductive member and a second conductive member; The ejector pin according to any one of claims 1 to 7, wherein the protrusion is electrically connected to the first conductive component, and the ball is electrically connected to the second conductive component.

10. The electronic device according to claim 9, characterized in that: The second conductive component is provided with a limiting groove corresponding to the ball, and the ball is clamped in the limiting groove.

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