TWI451642B - Signal transmission system and electronic device using the same - Google Patents

Description

Signal transmission system and electronic device using the signal transmission system

The present invention relates to a signal transmission system; in particular, the present invention relates to a signal transmission system capable of continuously transmitting signals for a long time and rotating at the same time.

The conventional signal transmission system can provide electrical contact for the purpose of signal transmission. Therefore, the terminals of the plug and the connector in the signal transmission system generally need to have good retention to provide stable and good electrical contact, as shown in the figure. 1 is shown. Although the conventional signal transmission system can provide the signal transmission requirements of general electronic devices, the conventional signal transmission system can no longer fully meet all the requirements due to the design and use of different electronic devices. For example, when the electronic device is also rotated during operation and signal transmission, the holding property of one side 50 is increased relative to the other 90 of the rotation, and the frictional resistance of the other 90 rotation is increased, thereby causing terminals that are in contact with each other. And the abrasion between the plugs produces metal powder; or the electrical conductivity of the terminal or plug metal is affected thereby.

Therefore, in addition to the development of new high wear-resistant materials for the plug and connector terminals in the signal transmission system, the present invention has been selected to improve the structure so that the plug and the terminal can have both wear resistance and good electrical contact. The characteristics further provide good and long-lasting signal transmission of the electronic device.

An object of the present invention is to provide a signal transmission system capable of continuously transmitting signals for a long time.

Another object of the present invention is to provide a signal transmission system capable of transmitting a power signal such as a large current for a long time.

Another object of the present invention is to provide a signal transmission system that can withstand long-term rotation and simultaneously transmit signals.

The signal transmission system includes a connector and a plug. The connector includes a jack and at least one terminal, and at least one terminal is disposed in the connector and has an electrical contact region including at least a portion of the spherical surface. The plug includes a columnar pin, and the column pin has at least one conductive segment formed on the outer surface of the column pin. Wherein, when the plug is inserted into the jack, at least one terminal in the connector corresponds to at least one conductive section, and the electrical contact area of the at least one terminal contacts the at least one conductive section to electrically connect the plug to the connector.

The terminal of the connector comprises a body and a ball head, and the ball head system is partially located in the body and partially protrudes outside the opening of the body. The spherical outer surface of the ball head forms an electrical contact area of the terminal, and one side of the ball head opposite to the opening is provided with elastic means such that the ball head is reciprocally displaced relative to the body along the axial direction of the body. The reciprocating displacement of the ball head is based on the direction of the external force of the ball head. Wherein, when the ball head is not subjected to an external force, the ball head has a first position on the fixed position body, and the terminal has a maximum length at this time; when the ball head is subjected to a maximum external force toward the body, the ball head is located at the second position At this time, the terminal has the minimum length. Thus the ball head can be located anywhere in the axial direction between the first position and the second position. The elastic device is matched with the ball head so that the plug reduces the wear on the ball head during insertion into the socket; on the other hand, it provides good contact between the ball head and the plug.

The pin of the plug is a column-shaped pin, the column-shaped pin has an end portion and a plurality of conductive segments formed on the outer surface thereof, and the plurality of conductive segments are arranged along the axial direction of the column-shaped pin; adjacent conductive An insulating layer is provided between the segments. a cylindrical pin and a cylindrical pin, the plurality of annular conductive segments formed thereon may have the same axis, and the same or different diameters; or a plurality of annular conductive segments formed on the column pins Have different axes. Wherein the annular conductive segments comprise a first conductive segment, the first conductive segment being located at an end of the columnar pin and having a first end and a second end having the same diameter. When the columnar pin enters the jack from the end thereof and the plug is inserted into the jack, the terminal in the connector corresponds to the conductive section, and the conductive section of the column pin is in electrical contact with the terminal The area is in contact while the position of the terminal ball head is between the first position and the second position.

The connector or plug is selectively rotatable. When the plug is rotated relative to the stationary connector, the rotating plug receives the power signal from the non-rotating connector via the power transmission section; when the connector is rotated relative to the stationary plug, the rotating connector is via the power terminal Receive power signals from plugs that are not rotating. Wherein, during the rotation, the electrical contact area formed on the surface of the ball head is in contact with the conductive section, and the position of the ball head can be fixed or changed between the first position and the second position. On the other hand, the rotation of the connector or the plug produces a relative displacement of the electrical contact region and the conductive segment; however, since the electrical contact region of the present invention is tied to the surface of the ball head, the rolling of the ball head can reduce the conductive segment The extent of relative movement with the electrical contact zone reduces losses to provide good signal conduction.

Another object of the present invention is to provide an electronic device using a signal transmission system. The electronic device includes any of the aforementioned signal transmission systems. Moreover, the electronic device further includes a first portion having one of the connectors and a second portion of the plug, the first portion and the second portion being signal-transmitted by the connector and the plug inserted in the jack.

The present invention provides a signal transmission system and an electronic device using the same. As shown in FIG. 2, the signal transmission system 10 includes a connector 100 and a plug 200. The connector 100 has a jack 101 and at least one terminal 130 disposed around the jack. The terminal 130 has an electrical contact area 120 including at least a partial spherical surface; the plug 200 has a pin 220, and the pin 220 has The conductive segment 230 is formed on the outer surface of the pin 220. When the plug 200 is inserted into the jack 101 from the opening of the jack 101 and inserted into the connector, that is, when the plug 200 is inserted into the jack 101, the terminal 130 in the connector 100 corresponds to the conductive section 230, and the plug 200 is electrically connected to the connector 100 and transmitted by the conductive portion 230 in contact with the electrical contact region 120 of the terminal 130. Among them, the signal contains a power signal. The power signal can be transmitted from the connector 100 to the electronic device connected to the plug 200, or the power signal is transmitted from the plug to the connector 100 to supply power to the electronic device using the signal transmission system.

As shown in FIG. 3A , the connector 100 is provided with a terminal 1301 , a terminal 1302 , a terminal 1303 and a terminal 1304 respectively having an electrical contact area 1201 , an electrical contact area 1202 , and an electrical connection in the socket 101 . Sex contact area 1203 and electrical contact area 1204. The number of terminals and the corresponding electrical contact area are not limited to the number in the drawing and can be adjusted according to the usage requirements of the signal transmission system. In the preferred embodiment of the invention, the terminals used by the connector 100 are pogo pins. As shown in FIG. 3B, the probe terminal 130 includes a body 135 having an opening at an end facing the insertion hole 101 for a portion of the ball head 136 of the probe terminal to protrude from the opening from the opening; that is, The ball head 136 is partially located in the body 135 and partially protrudes from the body 135; wherein the opening is a ring shape corresponding to the ball head 136, and the diameter of the annular opening 138 is smaller than the ball diameter of the ball head 136 (after Details). On the other hand, as shown, the ball head 136 is attached to an extension line of the body C in the axial direction C. The ball-shaped ball head 136 has a spherical outer surface 1361; since the ball head 136 is located at the end of the terminal 130 facing the insertion hole 101, the portion of the terminal 130 closest to the insertion hole 101 is located on the ball head surface 1361 and is used as an electrical property. Contact area 120. Therefore, when a plug of a suitable size (not shown) is inserted into the jack 101, the plug contacts the electrical contact area 120 to be electrically connected to the connector 100; and since the ball head 136 can roll, Therefore, further, the entire ball head surface 1361 is an electrical contact region 120. Further, inside the body 135, on the opposite side of the ball head 136 and the opening 138 in the axial direction C, an elastic means (not shown) such as a spring or a spring is further provided. The elastic device and the ball head 136 may be in direct contact with each other or may be provided without contact, that is, the ball head 136 is in contact with other members, and the other members are in contact with the elastic device; the other members may be, for example, members having balls, The arrangement of the balls avoids the direct contact of the elastic means with the ball heads and improves the wear resistance of the ball heads 136. However, whether or not the contact is made, the elastic means is disposed such that the ball head 136 is reciprocally displaced relative to the body 135 along the axial direction C of the body 135; further, the material of the terminal 130 other than the ball head 136 must be a conductive material, Other portions of the ball head 136 that are directly and indirectly electrically coupled and located on the telecommunication transmission path are also formed of a conductive material, such as the elastic device described above. The combination of the ball head and the elastic device is well known and will not be described here.

The reciprocating displacement of the ball head 136 is based on the direction of the external force received by the ball head 136. For example, the external force of the ball head 136 can be generated by the mutual interference between the plug and the ball head 136 when the plug enters the jack 101 and the connector 100; the external force causes the ball head 136 to be displaced toward the elastic device. The external force is transmitted to the elastic device via the ball head 136. On the one hand, the elastic means can buffer the external force received by the ball head 136, and on the other hand, the elastic force is stored, and the elastic force acts on the ball head 136 and acts toward the insertion hole 101, thereby making the electrical contact area of the ball head surface 1361. 120 is in close contact with the conductive section of the plug. When the plug leaves the socket 101 of the connector 100, the force on the ball head 136 from the direction of the jack 101 disappears, so that the elastic means releases the elastic force to cause the ball head 136 in contact therewith to be displaced in the opposite direction of the elastic means. In addition, as described above, the ball head 136 is partially located in the body 135 and is in contact with a member disposed in the body 135 such as an elastic device, and a portion is protruded from the opening 138 of the body 135 outside the body 135, and the opening 138 has a smaller diameter. The ball diameter of the ball head 136 prevents the ball head 136 from exiting the body 135 from the opening 138. In the embodiment of the present invention, the ball head 136 is in contact with the wall of the body 135 around the opening 138, and the position of the ball head 136 relative to the body 135 is fixed when no force is applied from the direction of the insertion hole 101, for example. Therefore, as shown in FIG. 3B, when the ball head 136 is not subjected to an external force, the ball head 136 has the first position A on the positionally fixed body 135, and the terminal 130 has the maximum length L at this time, and the elastic means is also unstressed. And have the maximum length. When the ball head 136 is subjected to the maximum external force in the direction toward the body 135, as shown in FIG. 3C, the ball head 136 is located at the second position B, at which time the terminal 130 has the minimum length I. Thus the ball head 136 can be located anywhere in the axial direction C between the first position A and the second position B. The arrangement of the resilient means with the ball head 136 is such that the plug 200 reduces wear on the ball head 136 during insertion into the receptacle 101; on the other hand, provides good contact between the ball head 136 and the plug.

In another embodiment of the invention, when the terminal has a maximum length L, the resilient means does not have the greatest length and has been stressed. At this time, the ball head 136 located at the first position A is simultaneously subjected to the force against the wall of the body 135 around the opening 138 and the elastic force from the elastic device, so that the external force received by the elastic device is from the body 135 around the opening 138. The force applied by the wall to the ball head 136; however, when the terminal has a minimum length I, as in the above embodiment, the ball head 136 is in the second position B. The ball head 136 can also be located anywhere in the axial direction C between the first position A and the second position B.

The terminals 1301 to 1304 of the embodiment of the present invention are respectively a ground terminal, a power terminal, an audio or video terminal. As described above, the number of terminals can be adjusted according to the use requirements of the signal transmission system, for example, a ground terminal is provided, or two audio terminals respectively transmitting the microphone and the earphone audio signals are provided. The material constituting the terminal includes copper, and the surface 1361 of the terminal ball head 136 is a spherical surface to form an electrical contact region. Therefore, the terminals 1301 to 1304 respectively have electrical contact regions 1201, 1202, 1203, and 1204 for electrical connection with the plug 200 (described later).

Furthermore, a plurality of terminals 1301-1304 can be disposed along the axial direction of the jack 101, for example, juxtaposed or staggered. Take the four terminals of the present invention as an example. The terminals 1301 - 1304 of the connector 100 can be arranged in parallel along the axial direction of the jack 101 in FIG. 3A on both sides of the jack 101, and the number of terminals on each side can be evenly distributed and spaced. The two sides of the jack 101 are respectively, for example, a terminal 1301 (ground terminal) and a terminal 1302 (power supply terminal) on the same side, and a terminal 1303 (audio terminal) and a terminal 1304 (video terminal) on the other side; in addition, the terminal 1301 ～1304 is a distance from the far side of the jack 101 to the terminals 1301 to 1304 to match the conductive section of the plug (described later). In various embodiments, the terminals 130 can be disposed toward the central axis of the jack 101 and around the jack 101 (ie, staggered along the axial direction of the jack 101). As shown in FIG. 4B, the terminals 1301 to 1304 are distributed on different sides around the insertion hole 101, and the axial directions of the terminals 1301 to 1304 are perpendicular to each other. Furthermore, as mentioned above, the number of terminals can be adjusted according to the usage requirements of the signal transmission system. At this time, the space of the connector 100 needs to be increased to accommodate the added terminal; for example, as shown in FIG. 4B, the depth of the socket 100 of the connector 100 is increased as compared with FIG. 4A to add one in the extending direction of the jack 101. Terminals 1305; accordingly, the number of pins 200 pins 220 is also increased to correspond to the terminals of the embodiment of Figure 4B.

A schematic view of the plug 200 is shown in Figure 5A. The pin 220 of the plug 200 is columnar. The columnar pin 220 herein means that the pin 220 has a configuration that extends in one direction, and is not limited to having a specific geometry or a smooth outer surface. The columnar pin 220 has an end portion 221. When the plug 200 is connected to the connector 100, the columnar pin 220 first enters the insertion hole 101 through the end portion 221 to insert the plug 200 into the connector 100. In addition, the columnar pin 220 is preferably cylindrical, and the cylindrical pin 220 has at least one conductive segment 230 formed on the surface of the pin 220 to be in contact with the electrical contact region 120 of the terminal 130, as shown in FIG. . The at least one conductive segment 230 preferably includes a plurality of conductive segments 230 arranged along the axial direction of the cylindrical pins 220 (ie, entering the direction of the insertion holes 101), and the adjacent conductive segments 230 are provided with insulation therebetween. Layer 225. The outer diameter of the cylindrical pin 220 (i.e., the plug size) needs to match the position of the aperture of the jack 101 and the electrical contact area 120 of the terminal 130. That is, when the plug 200 is inserted into the jack 101, the conductive portion 230 of the cylindrical pin 220 is in contact with the electrical contact region 120 of the terminal 130, and the position of the ball head 136 of the terminal 130 is as shown in FIG. 3B. Between the first position A and the second position B indicated by 3C. Taking the plug 200 of the specification 3.5 mm as an example, the aperture of the jack 101 is suitably larger than 3.5 mm; in addition, as shown in FIGS. 3A and 5B, the plug 200 of the specification 3.5 mm corresponds to the cylindrical pin. The virtual connection of the electrical contact regions 1202, 1204 of the terminals 1302, 1304 of the conductive segments 2302, 2304 of 220, and the electrical properties of the terminals 1301, 1303 corresponding to the conductive segments 2301, 2303 of the cylindrical pins 220, respectively. The vertical distance of the virtual connection (not shown) of the contact regions 1201, 1203 is preferably less than 3.5 mm when the ball head 136 is at the first position A; when the ball head 136 is at the first position B Preferably, it is greater than 3.5 mm. That is, when the ball head 136 is in the first position A, the minimum distance d1 between the ball head 136 and the opposite side of the socket 101 is preferably smaller than the column width of the cylindrical pin 220 (d1<3.5mm), the ball head When the 136 is located at the second position B, the maximum distance d2 between the ball head 136 and the opposite side of the insertion hole 101 is preferably greater than or equal to the column width of the cylindrical pin 220 (d2, for example, 3.5 mm).

On the other hand, the number of conductive segments 230 of the pins 220 preferably corresponds to the number of terminals 130 of the connector 100. However, if the plug 200 can be mated with the connector 100 having a different number of terminals 130, the number of conductive segments 230 of the pins 220 may not correspond to the number of terminals 130 of one of the connectors 100. In the embodiment of the present invention, the pin 220 of the plug 200 includes a conductive segment 2301, a conductive segment 2302, and conductive segments 2303 and 2304 respectively corresponding to the terminals 1001 - 1304 of the connector 100. Therefore, the conductive section 2301 is at the foremost end of the pin 220, and first enters the jack 101 to correspond to the terminal 1301 farthest from the opening of the jack 101; the conductive section 2304 is attached to the end of the pin 220, and finally The jack 101 is entered to correspond to the terminal 1304 closest to the opening of the jack 101; as shown in FIG. That is, the conductive section 2301 is in contact with the ground terminal, and the conductive sections 2302 to 2304 are respectively the power contact section, the audio transmission section, and the video transmission section, respectively, and the electrical contact area of the power terminal, the audio and video terminals. contact.

When the connector 100 is connected to the plug 200, the elastic means is arranged such that the ball head 136 can be displaced (displaced toward the body) during the insertion of the plug 200 into the socket 101 to reduce the wear of the ball head 136; On the one hand, the elastic means also provides an elastic force to ensure good contact between the electrical contact area 120 of the ball head 136 and the plug 200.

In another aspect, the connector 100 or plug 200 of the present invention is selectively rotatable. As described above, the conductive segments 2301 to 2304 of the plug 200 are in contact with the electrical contact regions 1201 to 1204 of the terminals 1301 to 1304, respectively, and are electrically connected to the connector 100. The terminal 1301 is a power terminal and the electrical contact region 1201. It is a transmission power signal. In the preferred embodiment, the rotating plug 200 receives power signals from the non-rotating connector 100 via the power transmission section; however, in various embodiments, the rotating connector 100 receives no via the power terminals. The power signal of the rotating plug 200.

Moreover, as described above, the pins 220 of the plug 200 are preferably cylindrical and are formed with a plurality of conductive segments 230 such that the pins 220 and the annular conductive segments 230 formed thereon rotate with the plug 200. The annular conductive segments 230 have the same or different lengths in the axial direction of the pins 220. In addition, the annular conductive segments 230 preferably have the same axis, and the annular conductive segments 230 include The first conductive segment adjacent to the end 221 is. In the present embodiment, the first conductive segment 2301 is a conductive segment 2301 which is the conductive segment closest to the end of the column pin 220 and adjacent to the conductive segment 2302. The first conductive segment 2301 has a first end 231 adjacent to the conductive portion 2302 and a second end 232 near the end portion 221, and the first end 231 and the second end 232 have the same diameter, the diameter and the conductive portion The diameters of 2302 to 2304 are equal. Therefore, when the plug 200 rotates, the path generated by the rotation of the conductive section 230 is the circumference of a circle, and the radius of the circle is equal to the vertical distance between the axis of the cylindrical pin 220 as the rotating shaft and the electrical contact area 120 of the terminal 130. This distance does not change during the rotation of the plug 200, that is, the position of the ball head 136 of the terminal 130 relative to the body 135 does not change between the first position A and the second position B; on the other hand, when the connector 100 rotates, The path of the electrical contact area 120 of the surface of the ball head 136 of the terminal 130 is also a circle of a circle, and the radius of the circle is equal to the vertical distance between the axis of the cylindrical pin 220 and the electrical contact area 120 of the terminal 130; the distance is similarly The connector 100 does not change during rotation, that is, the terminal 130 ball head 136 is in a fixed position between the first position A and the second position B. In a variant embodiment, the plurality of annular conductive segments 230 can have the same or different diameters. In a further variant embodiment, the cylindrical pins 220 can be formed with different axial centers or of an elliptical annular conductive segment 230 having the same axis or different axes; therefore, the columnar shape The distance between the rotating shaft of the pin 220 and the electrical contact area 120 of the terminal 130 is not a fixed distance during the rotation of the plug 200; the position of the ball head 136 may periodically change during the rotation of the plug 200 without being fixed, but also in the first A position A and a second position B are maintained while maintaining electrical contact between the upper electrical contact region 120 and the conductive portion 230 of the plug 200.

In addition, during the rotation of the plug 200 or the connector 100, since the conductive segment 230 is in contact with the electrical contact region 120 and generates relative movement, in general, the relative movement will contact the terminal 130 electrical contact region 120 and the plug 200. The conductive section 230 causes losses. However, the electrical contact region 120 of the present invention is positioned on the ball head surface 1361, so rolling of the ball head 136 can reduce the relative movement of the conductive segment 230 and the electrical contact region 120 to reduce losses to provide good signal transmission.

Figure 6 shows an electronic device 1 using a signal transmission system in the present invention. In the present embodiment, the electronic device 1 includes a first portion 11 and a second portion 12. The first portion 11 is a base 11' to which power can be supplied and has a connector 100; wherein the base 11' can be further coupled to other signal processing devices 13. The second portion 12 is a camera 12' and has a plug 200. The plug 200 of the camera 12' is electrically connected to the connector 100 of the base 11' and supplies the power of the camera 12' from the base 11'; on the other hand, the operating state of the camera 12' is included with respect to the base 11' according to the needs of use. Continuous rotation; that is, the plug 200 of the signal transmission system 10 is inserted into the socket 100 of the connector 100 and rotated relative to the connector 100. Therefore, the signal transmission device 10 is such that an electronic device that is continuously rotated in an operational state, such as the camera 12' of the present embodiment, can continuously receive a stable power supply without being affected by the rotation. In addition, the operating camera 12' can also continuously transmit, for example, audio and video signals through the signal transmission system 10, and then through the base 11' to the signal processing device 13 coupled to the base 11'; The camera 12' can further receive other signals through the signal transmission system 10, such as control signals from a control unit (not shown) connected to the base 11'.

In addition, in different embodiments, the first portion of the electronic device may be a portion that rotates under operation and has a connector; the second portion supplies power and has a plug inserted into the connector jack to electrically connect with the first portion. connection. At this point, the first portion rotates relative to the second portion, and the first portion also continues to receive a stable power supply without being affected by the rotation.

The present invention has been described by the above-described related embodiments, but the above embodiments are merely examples for implementing the present invention. It must be noted that the disclosed embodiments do not limit the scope of the invention. On the contrary, modifications and equivalents of the spirit and scope of the invention are included in the scope of the invention.

1. . . Electronic device

10. . . Signal transmission system

11. . . first part

11’‧‧‧Base

12‧‧‧Part II

12’‧‧‧ camera

100‧‧‧Connector

101‧‧‧ jack

120, 1201, 1202, 1203, 1204‧‧‧Electrical contact area

130, 1301, 1302, 1303, 1304‧‧‧ terminals

135‧‧‧ body

136‧‧‧Bead head

1361‧‧‧ surface

138‧‧‧ openings

200‧‧‧ plug

221‧‧‧End

225‧‧‧Insulation

220‧‧‧ pins

230, 2301, 2302, 2303, 2304‧‧‧ conductive sections

231‧‧‧ first end

232‧‧‧ second end

Figure 1 is a schematic view of a conventional connector;

2 is a schematic diagram of an embodiment of a signal transmission system of the present invention;

3A-3C are schematic views of an embodiment of a connector of the present invention;

4A-4B are schematic views showing another embodiment of the connector of the present invention;

5A-5B are schematic views of an embodiment of a plug of the present invention;

6 is a schematic diagram of an embodiment of an electronic device of the present invention.

10. . . Signal transmission system

100. . . Connector

101. . . Jack

120. . . Electrical contact zone

130. . . Terminal

200. . . plug

220. . . Pin

230. . . Conductive section

Claims (21)

A signal transmission system comprising: a connector comprising a jack and at least one terminal, wherein the at least one terminal is disposed in the connector and has an electrical contact region including at least a portion of a spherical surface, the at least one terminal being a probe a pin terminal having a ball head, the electrical contact area being located on the surface of the ball head; and a plug comprising a columnar pin having at least one conductive segment formed on the column a surface of the pin, wherein the plug is inserted into the jack, the at least one terminal in the connector corresponds to at least one conductive segment, and the electrical contact region of the at least one terminal contacts the at least one conductive The plug electrically connects the plug to the connector. The signal transmission system of claim 1, wherein the columnar pin has an end portion from which the column pin enters the socket to allow the plug to be inserted into the connector. The signal transmission system of claim 2, wherein the columnar pin has a plurality of conductive segments formed on an outer surface of the columnar pin, the conductive segments along an axis of the column pin Arrange. The signal transmission system of claim 3, wherein the conductive segments are a plurality of annular conductive segments having the same or different lengths along the axial direction. The signal transmission system of claim 4, wherein the conductive segments are a plurality of annular conductive segments having the same axis. The signal transmission system of claim 4, wherein the annular conductive segments comprise a first conductive segment, the first conductive segment is located at the end and has a first end and a second And the first end of the first conductive segment and the first Both ends have the same diameter. The signal transmission system of claim 4, wherein the conductive segments are a plurality of annular conductive segments having different diameters. The signal transmission system of claim 4, wherein the conductive segments are a plurality of annular conductive segments having different axes. The signal transmission system of claim 3, wherein an adjacent one of the conductive segments has an insulating layer therebetween. The signal transmission system of claim 1, wherein the at least one conductive segment comprises a power transmission section, an audio transmission section or a video transmission section, and the at least one terminal comprises a power source corresponding to the power source a transmission section, the audio transmission section, and one of the video transmission section power terminals, an audio terminal, or a video terminal. The signal transmission system of claim 1, wherein the at least one terminal further comprises a body and an elastic device, the body comprising an opening, the ball head is located in the axial direction of the body and partially exposed from the opening In this invention, the ball diameter of the ball head is larger than the diameter of the opening. The signal transmission system of claim 11, wherein the plug rotates relative to the connector, the elastic device maintains the electrical contact area of the ball head and the conductive section of the column pin Sexual contact. The signal transmission system of claim 11, wherein the elastic device is disposed in the body such that the ball head is elastically displaced relative to the body due to the relative relationship between the cylindrical pin and the socket. . The signal transmission system of claim 13, wherein the ball head is axially elastically displaced between a first position and a second position, wherein the ball head is located at the first position The opposite side of the jack has a minimum spacing, the roll When the bead is in the second position, the ball head has a maximum spacing from the opposite side of the jack. The signal transmission system of claim 14, wherein the ball head is located at the first position, the minimum distance of the ball head and the opposite side of the jack is smaller than the column width of the column pin. When the ball head is in the second position, the maximum distance of the ball head and the opposite side of the jack is greater than or equal to the column width of the columnar pin. The signal transmission system of claim 11, wherein the elastic device is electrically coupled to the ball head system by at least one member. The signal transmission system of claim 1, wherein the connector comprises a plurality of terminals disposed along an axial direction of the socket. The signal transmission system of claim 17, wherein the plurality of terminals are staggered or juxtaposed along an axial direction of the jack. An electronic device comprising: the signal transmission system of any one of claims 1 to 18; wherein the electronic device further comprises a first portion having the connector and a second of the plug And the first part and the second part are signal-transmitted by the connector and the plug inserted in the jack. The electronic device of claim 19, wherein the at least one conductive segment receives a power signal from the connector. The electronic device of claim 20, wherein the second portion is rotated relative to the first portion.