Circuit board connecting device and signal transmission system

Abstract

The utility model relates to a circuit board connecting device and a signal transmission system. Comprising a connecting rod body, a first elastic shielding assembly and a second elastic shielding assembly, and the first elastic shielding assembly and the second elastic shielding assembly sleeve the two ends of the connecting rod body respectively; the first socket comprises a first accommodating cavity for accommodating the first end of the connecting rod; the second socket comprises a second accommodating cavity for accommodating the second end of the connecting rod; under the condition that the connecting rod is connected with the first socket and the second socket, the first elastic shielding assembly and the second elastic shielding assembly are suitable for elastic deformation so as to be attached to the inner wall of the first containing cavity and the inner wall of the second containing cavity respectively, so that the first elastic shielding assembly seals a gap between the connecting rod body and the first containing cavity in the axial direction, and the second elastic shielding assembly seals a gap between the connecting rod body and the second containing cavity in the axial direction. And the second elastic shielding assembly seals a gap between the connecting rod main body and the second accommodating cavity in the axial direction, and the axial direction is the extension direction of the connecting rod. The device can avoid signal leakage and signal interference.

Description

Technical Field

[0001] The present application relates to the field of electrical connection technology, and in particular to a circuit board connection device and a signal transmission system. Background Art

[0002] RF coaxial connectors are usually installed on cables or PCBs. In the field of communication equipment connection, they are used for signal connection between PCBs. Currently, RF coaxial connectors on the market can be used for interconnection between filters, filters and antennas, antennas and antennas, circuit boards and circuit boards, circuit boards and RF modules, and RF modules and RF modules.

[0003] In the 5G communication era, as the frequency of RF signals becomes higher and higher, the wavelength of electromagnetic waves becomes shorter and shorter. If conventional RF coaxial connectors are used to connect circuit boards, the RF signal is very likely to leak from the connection between the connecting rod and the socket to the adjacent channel, causing signal interference. Utility Model Content

[0004] Based on this, it is necessary to provide a circuit board connection device and a signal transmission system to address the above technical problems, which can avoid signal leakage and signal interference.

[0005] In a first aspect, the present application provides a circuit board connection device, the device comprising:

[0006] A connecting rod, comprising a connecting rod body, a first elastic shielding component and a second elastic shielding component, wherein the first elastic shielding component and the second elastic shielding component are respectively sleeved on two ends of the connecting rod body;

[0007] A first socket, comprising a first accommodating cavity for accommodating the first end of the connecting rod, wherein the first socket is arranged on a first circuit board;

[0008] A second socket, comprising a second accommodating cavity for accommodating the second end of the connecting rod, wherein the second socket is disposed on a second circuit board;

[0009] Among them, when the connecting rod is respectively connected to the first socket and the second socket, the first elastic shielding component and the second elastic shielding component are suitable for undergoing elastic deformation to respectively fit with the inner walls of the first accommodating cavity and the second accommodating cavity, so that the first elastic shielding component closes the gap between the connecting rod body and the first accommodating cavity in the axial direction, and the second elastic shielding component closes the gap between the connecting rod body and the second accommodating cavity in the axial direction, and the axial direction is the extension direction of the connecting rod.

[0010] In one embodiment, the first elastic shielding component includes:

[0011] a first spring, wherein a first end of the first spring is fixedly connected to a middle portion of the connecting rod body;

[0012] a first shielding ring, the first shielding ring being sleeved on the first end of the connecting rod body and connected to the second end of the first spring;

[0013] When the connecting rod is connected to the first socket, the first spring is adapted to undergo elastic deformation to push the first shielding ring to fit into contact with the first accommodating cavity, so that the first shielding ring closes a first axial gap between the connecting rod body and the first accommodating cavity.

[0014] In one embodiment, the second elastic shielding component includes:

[0015] a second spring, wherein a first end of the second spring is fixedly connected to a middle portion of the connecting rod body;

[0016] a second shielding ring, the second shielding ring being sleeved on the second end of the connecting rod body and connected to the second end of the second spring;

[0017] When the connecting rod is connected to the second socket, the second spring is adapted to undergo elastic deformation to push the second shielding ring to fit into contact with the second accommodating cavity, so that the second shielding ring closes the first axial gap between the connecting rod body and the second accommodating cavity.

[0018] In one embodiment, the first shielding ring and the second shielding ring include conductive rubber.

[0019] In one embodiment, the connecting rod body comprises:

[0020] a first conductor;

[0021] A connecting rod insulator, wherein the connecting rod insulator is sleeved on the first conductor;

[0022] A connecting rod housing, wherein the connecting rod housing is sleeved on the connecting rod insulator, and the first elastic shielding component and the second elastic shielding component are sleeved on both ends of the connecting rod housing respectively;

[0023] There is a gap between the two ends of the outer wall of the connecting rod insulator and the connecting rod shell, the two ends of the connecting rod insulator are respectively provided with insulator bosses, the two ends of the connecting rod shell are narrowed in diameter, and the two ends of the connecting rod shell are respectively provided with shell bosses.

[0024] In one of the embodiments, a positioning boss is provided on the inner wall of the connecting rod housing, and a positioning groove cooperating with the positioning boss is provided on the outer wall of the connecting rod insulator.

[0025] In one embodiment, the first socket comprises: a second conductor, a first housing and a first insulator;

[0026] The second conductor is arranged at the center of the first insulator, the first insulator is arranged in the middle of the first shell, and the first shell has a bell mouth facing one end of the connecting rod.

[0027] In one embodiment, the second socket comprises: a third conductor, a second housing, and a second insulator;

[0028] The third conductor is arranged at the center of the second insulator, the second insulator is arranged in the middle of the second shell, and an inclined guiding surface is provided at one end of the second shell facing the connecting rod.

[0029] In one embodiment, the connecting rod body includes a first conductor, the first socket includes a second conductor, and the second socket includes a third conductor;

[0030] The two ends of the first conductor are provided with countersunk holes extending inwards, the bottom ends of the countersunk holes are provided with inwardly recessed conical holes, and the top ends of the second conductor and the third conductor extend outwards and have conical ends.

[0031] In a second aspect, the present application provides a signal transmission system, which includes a first circuit board, a second circuit board, and a circuit board connecting device as described in any of the above embodiments.

[0032] The above-mentioned circuit board connecting device and signal transmission system include a connecting rod, a first socket and a second socket. The first socket can be set on the first circuit board, and the second socket can be set on the second circuit board. The connecting rod can be connected to the first socket and the second socket respectively, thereby electrically connecting the first circuit board and the second circuit board. The connecting rod includes a connecting rod body, a first elastic shielding component and a second elastic shielding component, and a first socket including a first accommodating cavity for accommodating the first end of the connecting rod, and the second socket including a second accommodating cavity for accommodating the second end of the connecting rod. When the connecting rod is connected to the first socket and the second socket respectively, the first elastic shielding component can undergo elastic deformation and fit with the inner wall of the first accommodating cavity, thereby closing the axial gap between the first end of the connecting rod body and the first accommodating cavity, thereby preventing the signal transmitted between the first socket and the first end of the connecting rod from leaking, and other interference signals cannot enter the first socket and the connecting rod through the gap; and the second elastic shielding component can also undergo elastic deformation and fit with the inner wall of the second accommodating cavity, thereby closing the axial gap between the second end of the connecting rod body and the second accommodating cavity, thereby preventing the signal transmitted between the second socket and the second end of the connecting rod from leaking, and other interference signals cannot enter the second socket and the connecting rod through the gap. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] FIG1 is a schematic structural diagram of a circuit board connection device in one embodiment;

[0035] FIG2 is a schematic structural diagram of a connecting rod in one embodiment;

[0036] FIG3 is a schematic structural diagram of a connecting rod in another embodiment;

[0037] FIG4 is a schematic structural diagram of a connecting rod body in one embodiment;

[0038] FIG5 is a schematic structural diagram of a first socket in one embodiment;

[0039] FIG. 6 is a schematic diagram of the structure of a second socket in one embodiment.

[0040] Explanation of the figure marks: 1-connecting rod, 11-connecting rod body, 111-first conductor, 112-connecting rod insulator, 113-connecting rod housing, 12-first elastic shielding assembly, 121-first spring, 122-first shielding ring, 13-second elastic shielding assembly, 131-second spring, 132-second shielding ring, 2-first socket, 21-connecting rod housing, 22-first insulator, 23-first housing, 3-second socket, 31-third conductor, 32-second insulator, 33-second housing, 4-first circuit board, 5-second circuit board. DETAILED DESCRIPTION

[0041] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0043] It can be understood that the terms "first", "second", etc. used in the present application can be used in this article to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish the first element from another element.

[0044] Spatially relative terms such as "under," "beneath," "below," "under," "above," "above," and the like may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It should be understood that, in addition to the orientations shown in the figures, spatially relative terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as being "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0045] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element, or connected to the other element through an intermediate element. In addition, the "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if there is transmission of electrical signals or data between the connected objects.

[0046] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" and the like specify the presence of stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. At the same time, the term "and / or" used in this specification includes any and all combinations of the relevant listed items.

[0047] In one embodiment, as shown in FIG. 1 , the present application provides a circuit board connection device, which includes: a connection rod 1 , a first socket 2 , and a second socket 3 .

[0048] The connecting rod 1 includes a connecting rod body 11, a first elastic shielding component 12 and a second elastic shielding component 13, and the first elastic shielding component 12 and the second elastic shielding component 13 are respectively sleeved on both ends of the connecting rod body 11. The first socket 2 includes a first accommodating cavity 21 for accommodating the first end of the connecting rod 1, and the first socket 2 is arranged on the first circuit board 4. The second socket 3 includes a second accommodating cavity 31 for accommodating the second end of the connecting rod 1, and the second socket 3 is arranged on the second circuit board 5.

[0049] Among them, when the connecting rod 1 is respectively connected to the first socket 2 and the second socket 3, the first elastic shielding component 12 and the second elastic shielding component 13 are suitable for undergoing elastic deformation to respectively fit with the inner walls of the first accommodating cavity 21 and the second accommodating cavity 22, so that the first elastic shielding component 12 closes the axial gap between the connecting rod body 11 and the first accommodating cavity 21, and the second elastic shielding component 13 closes the axial gap between the connecting rod body 11 and the second accommodating cavity 31, and the axial direction is the extension direction of the connecting rod 1.

[0050] In applications, in order to enable the transmission of radio frequency signals between two circuit boards, it is usually necessary to set sockets on the two circuit boards respectively, and then connect the two sockets through a connecting rod. The electrical signal on one circuit board can be transmitted to the other circuit board through the socket set on the circuit board, the connecting rod and the socket set on the other circuit board. However, when the distance between the two circuit boards is large, although the connecting rod in the related art can interconnect the two circuit boards when the distance between the two circuit boards is within the tolerance range, there will be a gap at the connection between the connecting rod and the socket. The radio frequency signal may leak from the gap to the adjacent channel, causing interference to the signal transmitted by the adjacent channel. Other interference signals may also interfere with the radio frequency signal from the gap.

[0051] Therefore, in the present application, a first elastic shielding component 12 and a second elastic shielding component 13 are respectively sleeved on both ends of the connecting rod body 11 of the connecting rod 1. When the connecting rod 1 is used to connect the first socket 2 on the first circuit board 4 and the second socket 3 on the second circuit board 5, the first elastic shielding component 12 can undergo elastic deformation and fit with the inner wall of the first accommodating cavity 21, thereby closing the axial gap between the first end of the connecting rod body 11 and the first accommodating cavity 21. At the same time, the second elastic shielding component 13 fits with the inner wall of the second accommodating cavity 22, thereby closing the axial gap between the second end of the connecting rod body 11 and the second accommodating cavity 31, thereby enabling the radio frequency signal on the first circuit board 4 to be stably transmitted to the second circuit board 5 through the first socket 2, the connecting rod 1 and the second socket 3, or enabling the radio frequency signal on the second circuit board 5 to be stably transmitted to the first circuit board 4 through the second socket 3, the connecting rod 1 and the first socket 2.

[0052] The circuit board connection device comprises a connecting rod, a first socket and a second socket, wherein the first socket can be arranged on a first circuit board, the second socket can be arranged on a second circuit board, the connecting rod can be connected to the first socket and the second socket respectively, so that the first circuit board and the second circuit board are electrically connected. The connecting rod comprises a connecting rod body, a first elastic shielding component and a second elastic shielding component, the first socket comprises a first accommodating cavity for accommodating the first end of the connecting rod, and the second socket comprises a second accommodating cavity for accommodating the second end of the connecting rod, when the connecting rod is respectively connected to the first socket and the second socket, the first elastic shielding component can be elastically deformed, fit with the inner wall of the first accommodating cavity, and close the gap between the first end of the connecting rod body and the first accommodating cavity in the axial direction, so that the signal transmitted between the first socket and the first end of the connecting rod will not leak, and other interference signals cannot enter the first socket and the connecting rod through the gap; and the second elastic shielding component can also be elastically deformed, fit with the inner wall of the second accommodating cavity, and close the gap between the second end of the connecting rod body and the second accommodating cavity in the axial direction, so that the signal transmitted between the second socket and the second end of the connecting rod will not leak, and other interference signals cannot enter the second socket and the connecting rod through the gap.

[0053] In one embodiment, as shown in FIG. 2 , the first elastic shielding assembly 12 includes: a first spring 121 and a first shielding ring 122 .

[0054] The first end of the first spring 121 is fixedly connected to the middle of the connecting rod body 11. The first shielding ring 122 is sleeved on the first end of the connecting rod body 11 and connected to the second end of the first spring 121. When the connecting rod 1 is connected to the first socket 2, the first spring 121 is adapted to undergo elastic deformation, pushing the first shielding ring 122 to fit into contact with the first accommodating cavity 21, so that the first shielding ring 122 closes the first gap between the connecting rod body 11 and the first accommodating cavity 21 in the axial direction.

[0055] In application, a first spring 121 can be provided at the first end of the connecting rod body 11, and the first end of the first spring 121 is fixedly connected to the middle of the connecting rod body 11. When the gap between the two circuit boards is large, the first spring 121 can be elastically deformed in the direction from the middle of the connecting rod body 11 to the first end of the connecting rod body 11, extending toward the first end of the connecting rod body 11, and then pushing the first shielding ring 122 to move in the direction from the middle of the connecting rod body 11 to the first end of the connecting rod body 11. The material of the first shielding ring 122 can be conductive rubber, so the first shielding ring 122 also has a certain elastic deformation ability to fit in contact with the first accommodating cavity 21 and close the gap between the first end of the connecting rod body 11 and the first accommodating cavity 21.

[0056] In one embodiment, as shown in FIG. 3 , the second elastic shielding assembly 13 includes: a second spring 131 and a second shielding ring 132 .

[0057] The first end of the second spring 131 is fixedly connected to the middle of the connecting rod body 11 . The second shielding ring 132 is sleeved on the second end of the connecting rod body 11 and connected to the second end of the second spring 131 .

[0058] When the connecting rod 1 is connected to the second socket 3 , the second spring 131 is adapted to undergo elastic deformation to push the second shielding ring 132 to fit into contact with the second accommodating cavity 31 , so that the second shielding ring 132 closes the first axial gap between the connecting rod body 11 and the second accommodating cavity 31 .

[0059] Similarly, a second spring 131 can be provided at the second end of the connecting rod body 11, and the first end of the second spring 131 is fixedly connected to the middle of the connecting rod body 11. When the gap between the two circuit boards is large, the second spring 131 can be elastically deformed in the direction from the middle of the connecting rod body 11 to the second end of the connecting rod body 11, extending toward the second end of the connecting rod body 11, thereby pushing the second shielding ring 132 to move in the direction from the middle of the connecting rod body 11 to the second end of the connecting rod body 11. The material of the second shielding ring 132 can be conductive rubber, so the second shielding ring 132 also has a certain elastic deformation ability to fit in contact with the second accommodating cavity 31 and close the gap between the second end of the connecting rod body 11 and the second accommodating cavity 31.

[0060] In another embodiment, the connecting rod 1 may include only one telescopic spring, the middle part of the telescopic spring is fixedly connected to the middle part of the connecting rod body 11, and the first shielding ring 122 and the second shielding ring 132 are respectively connected to the two ends of the telescopic spring to move in the extension direction of the connecting rod 1 following the expansion and contraction of the telescopic spring.

[0061] In one embodiment, as shown in FIG. 4 , the connecting rod body 11 includes a first conductor 111 , a connecting rod insulator 112 , and a connecting rod housing 113 .

[0062] The connecting rod insulator 112 is sleeved on the first conductor 111. The connecting rod housing 113 is sleeved on the connecting rod insulator 112, and the first elastic shielding component 12 and the second elastic shielding component 13 are sleeved on both ends of the connecting rod housing 113. There is a gap between the two ends of the outer wall of the connecting rod insulator 112 and the connecting rod housing 113, and the two ends of the connecting rod insulator 112 are respectively provided with insulator bosses, the two ends of the connecting rod housing 113 have narrowed diameters, and the two ends of the connecting rod housing 113 are respectively provided with housing bosses. The inner wall of the connecting rod housing 113 is provided with a positioning boss, and the outer wall of the connecting rod insulator 112 is provided with a positioning groove that cooperates with the positioning boss.

[0063] It can be understood that the radio frequency signal in the circuit board can only be transmitted through the conductor. Therefore, a first conductor 111 is provided in the connecting rod body 11. When the connecting rod 1 is connected to the first socket 2 and the second socket 3, the first conductor 111 contacts the conductors in the first socket 2 and the second socket 3 respectively to transmit the radio frequency signal. A connecting rod insulator 112 is sleeved on the first conductor 111, and a connecting rod housing 113 is sleeved on the connecting rod insulator 112. The connecting rod insulator can prevent the first conductor 111 from being in electrical contact with the connecting rod housing 113. In order to ensure that the connecting rod housing 113 can be stably sleeved on the connecting rod insulator 112, a positioning groove can be provided on the outer wall of the connecting rod insulator 112, and a positioning boss can be provided on the inner wall of the connecting rod housing 113. The positioning boss is engaged with the positioning groove to connect the connecting rod housing 113 and firmly connect the connecting rod insulator 112.

[0064] In addition, a gap is left between the two ends of the outer wall of the connecting rod insulator 112 and the connecting rod housing 113, and insulator bosses are respectively provided at both ends of the connecting rod insulator 112. The diameters of the two ends of the connecting rod housing 113 are narrowed, and housing bosses are respectively provided at the two end portions of the connecting rod housing 113, so that after the staff inserts the connecting rod 1 into the first socket 2 and the second socket 3, the connecting rod 1 can be stably connected to the first socket 2 and the second socket 3, so that the connecting rod 1 will not fall off from the first socket 2 and the second socket 3.

[0065] In application, the first elastic shielding component 12 and the second elastic shielding component 13 are respectively sleeved on the two ends of the outer wall of the connecting rod housing 113. When the first end of the connecting rod 1 is connected to the first socket 2 and the second end of the connecting rod 1 is connected to the second socket 3, the first spring 121 pushes the first shielding ring 122 to move in the direction from the middle of the connecting rod body 11 to the first end of the connecting rod body 11 through elastic force, so that the first shielding ring 122 fits in contact with the first accommodating cavity 21, and completely closes the gap between the first end of the connecting rod body 11 and the first accommodating cavity 21. The second spring 131 pushes the second shielding ring 132 to move in the direction from the middle of the connecting rod body 11 to the second end of the connecting rod body 11 through elastic force, so that the second shielding ring 132 fits in contact with the second accommodating cavity 31, and completely closes the gap between the first end of the connecting rod body 11 and the second accommodating cavity 31. Since the structures of both ends of the connecting rod 1 are consistent, the connecting rod 1 can be interchangeably plugged into the first socket 2 and the second socket 3. For example, the first end of the connecting rod 1 can also be connected to the second socket 3, and the second end of the connecting rod 1 can also be connected to the first socket 2.

[0066] In one embodiment, as shown in Fig. 5, the first socket 2 comprises a second conductor 21, a first insulator 22 and a first shell 23. The second conductor 21 is arranged at the center of the first insulator 22, the first insulator 22 is arranged in the middle of the first shell 23, and the first shell 23 is flared toward one end of the connecting rod 1.

[0067] When the first socket 2 is mounted on the first circuit board 4, the radio frequency signal in the first circuit board 4 is transmitted to the second conductor 21. When the first socket 2 is connected to the connecting rod 1, the radio frequency signal in the second conductor 21 can be transmitted to the first conductor 111, or the second conductor 21 can receive the radio frequency signal transmitted by the first conductor 111. The first insulator 22 can be used to isolate the second conductor 21 from electrical contact with the first housing 23, and the bell mouth of the first housing 23 can facilitate the insertion of the connecting rod 1 into the first socket 2.

[0068] In one embodiment, as shown in Fig. 6, the second socket 2 comprises: a third conductor 31, a second insulator 32 and a second shell 33. The third conductor 31 is arranged at the center of the second insulator 32, the second insulator 32 is arranged in the middle of the second shell 33, and the second shell 33 is provided with an inclined guide surface at one end facing the connecting rod 1.

[0069] When the second socket 3 is mounted on the second circuit board 5, the radio frequency signal in the second circuit board 5 is transmitted to the third conductor 31. When the second socket 3 is connected to the connecting rod 1, the radio frequency signal in the third conductor 31 can be transmitted to the first conductor 111, or the third conductor 31 can receive the radio frequency signal transmitted by the first conductor 111. The second insulator 32 can be used to isolate the third conductor 31 from electrical contact with the second housing 33, and the inclined guide surface of the second housing 33 can guide the connecting rod 1 to be inserted into the second socket 3.

[0070] In one embodiment, please continue to refer to FIG. 4, FIG. 5 and FIG. 6, both ends of the first conductor 111 are provided with countersunk holes extending inward, the bottom end of the countersunk holes is provided with a conical hole recessed inward, and the top ends of the second conductor 21 and the third conductor 31 extend outward and the ends are conical. When the gap between the circuit boards is small, the first conductor 111 can be respectively engaged with the second conductor 21 and the third conductor 31, which is beneficial to signal transmission.

[0071] In one embodiment, the present application provides a signal transmission system, which includes a first circuit board, a second circuit board, and a circuit board connecting device according to any one of the above embodiments.

[0072] In the description of this specification, the descriptions with reference to the terms "some embodiments", "other embodiments", "ideal embodiments", etc., mean that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the utility model. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.

[0073] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0074] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A circuit board connection device, characterized in that: The device comprises: A connecting rod, comprising a connecting rod body, a first elastic shielding component and a second elastic shielding component, wherein the first elastic shielding component and the second elastic shielding component are respectively sleeved on two ends of the connecting rod body; A first socket, comprising a first accommodating cavity for accommodating the first end of the connecting rod, wherein the first socket is arranged on a first circuit board; A second socket, comprising a second accommodating cavity for accommodating the second end of the connecting rod, wherein the second socket is disposed on a second circuit board; Among them, when the connecting rod is respectively connected to the first socket and the second socket, the first elastic shielding component and the second elastic shielding component are suitable for undergoing elastic deformation to respectively fit with the inner walls of the first accommodating cavity and the second accommodating cavity, so that the first elastic shielding component closes the gap between the connecting rod body and the first accommodating cavity in the axial direction, and the second elastic shielding component closes the gap between the connecting rod body and the second accommodating cavity in the axial direction, and the axial direction is the extension direction of the connecting rod.

2. The circuit board connection device according to claim 1, characterized in that: The first elastic shielding component comprises: a first spring, wherein a first end of the first spring is fixedly connected to a middle portion of the connecting rod body; a first shielding ring, the first shielding ring being sleeved on the first end of the connecting rod body and connected to the second end of the first spring; When the connecting rod is connected to the first socket, the first spring is adapted to undergo elastic deformation to push the first shielding ring to fit into contact with the first accommodating cavity, so that the first shielding ring closes a first axial gap between the connecting rod body and the first accommodating cavity.

3. The circuit board connection device according to claim 2, characterized in that: The second elastic shielding component comprises: a second spring, wherein a first end of the second spring is fixedly connected to a middle portion of the connecting rod body; a second shielding ring, the second shielding ring being sleeved on the second end of the connecting rod body and connected to the second end of the second spring; When the connecting rod is connected to the second socket, the second spring is adapted to undergo elastic deformation to push the second shielding ring to fit into contact with the second accommodating cavity, so that the second shielding ring closes the first axial gap between the connecting rod body and the second accommodating cavity.

4. The circuit board connection device according to claim 3, characterized in that: The first shielding ring and the second shielding ring include conductive rubber.

5. The circuit board connection device according to claim 1, characterized in that: The connecting rod body comprises: a first conductor; A connecting rod insulator, wherein the connecting rod insulator is sleeved on the first conductor; A connecting rod housing, wherein the connecting rod housing is sleeved on the connecting rod insulator, and the first elastic shielding component and the second elastic shielding component are sleeved on both ends of the connecting rod housing respectively; There is a gap between the two ends of the outer wall of the connecting rod insulator and the connecting rod shell, the two ends of the connecting rod insulator are respectively provided with insulator bosses, the two ends of the connecting rod shell are narrowed in diameter, and the two ends of the connecting rod shell are respectively provided with shell bosses.

6. The circuit board connection device according to claim 5, characterized in that: A positioning boss is provided on the inner wall of the connecting rod housing, and a positioning groove matched with the positioning boss is provided on the outer wall of the connecting rod insulator.

7. The circuit board connection device according to claim 1, characterized in that: The first socket comprises: a second conductor, a first housing and a first insulator; The second conductor is arranged at the center of the first insulator, the first insulator is arranged in the middle of the first shell, and the first shell has a bell mouth facing one end of the connecting rod.

8. The circuit board connection device according to claim 1, characterized in that: The second socket comprises: a third conductor, a second housing and a second insulator; The third conductor is arranged at the center of the second insulator, the second insulator is arranged in the middle of the second shell, and an inclined guiding surface is provided at one end of the second shell facing the connecting rod.

9. The circuit board connection device according to claim 1, characterized in that: The connecting rod body includes a first conductor, the first socket includes a second conductor, and the second socket includes a third conductor; The two ends of the first conductor are provided with countersunk holes extending inwards, the bottom ends of the countersunk holes are provided with inwardly recessed conical holes, and the top ends of the second conductor and the third conductor extend outwards and have conical ends.

10. A signal transmission system, characterized in that: The system comprises a first circuit board, a second circuit board and the circuit board connecting device according to any one of claims 1 to 9.

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