Connecting structure and onboard metal cavity filter

Abstract

The utility model provides a connecting structure and an onboard metal cavity filter. The connecting structure is used for connecting an upper cavity filter of the onboard metal cavity filter with a PCB (Printed Circuit Board), and comprises a power connection rod, the insulating medium is arranged on the peripheral side of the electricity connection rod in a sleeving manner, and the peripheral side of the insulating medium is connected with the cavity filter; the conductive part is used for being connected with the PCB; the conductive piece is arranged on one end side of the electricity connection rod, the conductive piece is provided with a deformation part in the axial direction, and the abutting area of the conductive piece and the electricity connection rod is smaller than the area of the end face of the electricity connection rod. According to the connecting structure and the onboard metal cavity filter provided by the invention, the rigidity of the power connection rod is effectively improved, and better external force resistance is achieved; and the connection state of the electricity connection rod and the conductive piece is easy to observe and detect.

Description

Technical Field

[0001] This application belongs to the field of communication technologies, and more particularly, relates to a connection structure and a board-mounted metal cavity filter. Background Art

[0002] Reference Figure 6 and Figure 7 As shown in [references] and [references], the cavity filter 430 on the board-mounted metal cavity filter is connected to the PCB board 420 through a connection structure. Generally, the conventional connection structure generally uses blind plugging of a plug-and-play structure, that is, the plug on the cavity filter 430 is inserted into the socket 520 on the PCB board 420 to achieve electrical signal transmission. However, the plug on the aforementioned plug-and-play structure generally includes a plurality of elastic arms 510. The size of the elastic arms 510 is extremely small, resulting in a relatively high processing cost. At the same time, the elastic arms 510 are prone to deformation under pressure. After the deformed elastic arms 510 are inserted into the socket 520, it is easy to cause poor contact, and it is difficult to detect the contact situation after insertion, resulting in difficulty in controlling the production yield of the board-mounted metal cavity filter. Summary of the Utility Model

[0003] The purpose of the embodiments of this application is to provide a connection structure and a board-mounted metal cavity filter to solve the technical problem of poor contact of the connection structure in the prior art.

[0004] To achieve the above object, the technical solution adopted in the first aspect embodiment of this application is to provide a connection structure for connecting a cavity filter on a board-mounted metal cavity filter to a PCB board, which includes:

[0005] A power connection rod;

[0006] An insulating medium sleeved on the periphery of the power connection rod and connected to the cavity filter on its periphery;

[0007] A conductive member for connecting to the PCB board; the conductive member is disposed on one end side of the power connection rod, and the conductive member has a deformation portion in its axial direction, and the abutting area between the conductive member and the power connection rod is smaller than the end face area of the power connection rod.

[0008] Optionally, the conductive member includes at least two deformation spring pieces that are centrosymmetrically arranged and bent, and the bending directions of the deformation spring pieces are arranged towards each other.

[0009] Optionally, there are four deformation spring pieces arranged centrosymmetrically.

[0010] Optionally, the deformation spring pieces are integrally formed.

[0011] Optionally, the power connection pole includes a first diameter section and a second diameter section, the diameter of the first diameter section being greater than that of the second diameter section, and the insulating medium is sleeved on the second diameter section and abuts against the end face of the first diameter section.

[0012] Optionally, a hooking portion is provided on the circumferential surface of the first diameter section of the power connection pole, and the inclination direction of the hooking portion inclines towards the second diameter section; a hooking groove is correspondingly provided on the inner circumferential surface of the insulating medium.

[0013] Optionally, the insulating medium is formed with a stepped portion in the axial direction.

[0014] In the embodiment of the second aspect of the present application, a board-mounted metal cavity filter is proposed, which includes: a substrate; a PCB board fixedly arranged on the substrate; a cavity filter detachably arranged on the PCB board, and the aforementioned connection structure is connected between the cavity filter and the PCB board; wherein, a conductive member is welded to the PCB board.

[0015] Optionally, an installation cavity is provided on the cavity filter. When the cavity filter is connected to the PCB board, an installation space for accommodating the connection structure is formed between the installation cavity and the surface of the PCB board.

[0016] Optionally, a stepped hole is provided on the side wall of the installation cavity, and the stepped hole is used for passing through the power connection pole and for fixing the insulating medium.

[0017] The connection structure and the board-mounted metal cavity filter provided by the embodiments of the present application at least have the following beneficial effects:

[0018] By changing the traditional plug and socket into the connection form of a power connection pole and a conductive member, and making the end face of the power connection pole in electrical contact with the conductive member. In this way, when the power connection pole presses the conductive member, the deformed portion of the conductive member abuts tightly against the power connection pole under the action of elastic force, so as to be able to maintain stable electrical signal transmission; in addition, no elastic portion is provided on the power connection pole, and the power connection pole can achieve a large diameter size to maintain good rigidity; furthermore, the conductive member is arranged in this way and can also facilitate observing the deformation of each deformed portion, which is beneficial to timely discovering the situation of poor contact. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings.

[0020] Figure 1Isometric view of the connection structure in some embodiments of the present application;

[0021] Figure 2 Front view of the power connection pole and the conductive member in some embodiments of the present application;

[0022] Figure 3 Isometric view of the conductive member in some embodiments of the present application;

[0023] Figure 4 Cross-sectional view of the on-board metal cavity filter in some embodiments of the present application;

[0024] Figure 5 Is Figure 4 Enlarged view of location A in

[0025] Figure 6 Is the cross-sectional view of the on-board metal cavity filter in the related art;

[0026] Figure 7 Is Figure 6 Enlarged view of location B in Detailed implementation manners

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer and more understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0028] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0029] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element.

[0030] When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0031] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0033] In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0034] Please refer to Figures 1 to 5 together, and now the connection structure provided by the embodiments of the first aspect of the present application will be described.

[0035] It can be understood that referring to Figure 4 and Figure 5 the connection structure described in the present application is used for connecting the upper cavity filter 430 of the on-board metal cavity filter to the PCB board 420, and it includes a power connection rod 100, an insulating medium 200, and a conductive member 300.

[0036] Referring to Figure 4 it can be understood that the on-board metal cavity filter includes at least a PCB board 420 and a cavity filter 430. The cavity filter 430 is fixedly connected to the PCB board 420, and realizes electrical signal connection with the PCB board 420 through the connection structure, so that electrical signals can be transmitted to the cavity filter 430 for filtering.

[0037] Referring to Figures 1 to 3 specifically, the power connection rod 100 is rod-shaped; the insulating medium 200 is sleeved on the periphery of the power connection rod 100 and its periphery is connected to the cavity filter 430 to fix the power connection rod 100 in the cavity filter 430 to achieve stable signal coupling; the conductive member 300 is used for fixedly connecting to the PCB board 420, such as by welding or screwing to the PCB board 420 with bolts. The position of the conductive member 300 on the PCB board 420 is located on the axial direction of the power connection rod 100, that is, the conductive member 300 abuts against the end face of the power connection rod 100 to achieve electrical signal transmission. Specifically, a deformation part is provided in the axial direction of the conductive member 300, and the deformation part can elastically deform in the axial direction. When the power connection rod 100 is assembled in place, the bottom end face of the power connection rod 100 presses the deformation part on the conductive member 300 so that the deformation part can abut against the power connection rod 100 under the action of elastic force, so that the two can maintain a close contact state to ensure the stability of electrical signal transmission.

[0038] By providing a deformation part on the conductive member 300 and setting the contact position between the conductive member 300 and the power connection rod 100 at the end face of the power connection rod 100, in this way, the power connection rod 100 can be set as a single rod shape without the need to provide elastic arms, effectively improving the rigidity of the power connection rod 100 to better resist external forces; in addition, the deformation part on the conductive member 300 is arranged axially, making it easy to observe and detect the connection state between the power connection rod 100 and the conductive member 300.

[0039] Reference Figure 3 , in some embodiments, the deformation part at least includes two deformation spring pieces 310, the centers of the spring pieces are symmetrically arranged and bent, and the bending directions of the deformation spring pieces 310 are arranged towards each other. By arranging the bending directions of the deformation spring pieces 310 towards each other, the contact points between the deformation part and the power connection rod 100 can be concentrated around the axis of the conductive member 300.

[0040] Reference Figure 3 , in some embodiments, the widths of the deformation spring pieces 310 are different at different axial heights. Specifically, in the axial direction from low to high, the width of the deformation spring piece 310 gradually decreases until its top end is in a pointed shape. In this way, the part with a larger width on the deformation spring piece 310 has better rigidity, while the tip has better elasticity. When the power connection rod 100 contacts the conductive member 300, the tip enables the conductive member 300 to fully contact the power connection rod 100, and the part with a larger width can limit the large deformation of the conductive member 300 to maintain a good contact state.

[0041] Reference Figure 3 , in a further embodiment, there are four deformation spring pieces 310 symmetrically arranged at the center, and the deformation spring pieces 310 are integrally formed, for example, formed by stamping and bending a metal plate.

[0042] Reference Figure 2 and Figure 5 , in some embodiments, the power connection rod 100 includes a first diameter section 110 and a second diameter section 120, the diameter of the first diameter section 110 is larger than that of the second diameter section 120, and the insulating medium 200 is sleeved on the second diameter section 120 and abuts against the end face of the first diameter section 110. By providing the first diameter section 110 and the second diameter section 120 on the power connection rod 100, the diameter difference between the first diameter section 110 and the second diameter section 120 can form a stop surface, thereby restricting the further movement of the insulating medium 200 along the axial direction of the power connection rod 100, thus playing a role in the assembly positioning of the insulating medium 200 to simplify the assembly steps between the power connection rod 100 and the insulating medium 200.

[0043] Reference Figure 2 and Figure 5, Further, a hooking portion 130 is provided on the circumferential surface of the first diameter section 110 of the power connection pole 100. The inclination direction of the hooking portion 130 inclines towards the second diameter section 120, and the included angle between the side of the hooking portion 130 close to the first diameter section 110 and the second diameter section 120 is an acute angle or a right angle; correspondingly, a hooking groove is correspondingly provided on the inner circumferential surface of the insulating medium 200 for clamping the hooking portion 130. Specifically, when the insulating medium 200 slides axially along the power connection pole 100 to the assembly position, after the hooking portion 130 is caught in the hooking groove, it means that the insulating medium 200 is assembled in place. And because the included angle between the side of the hooking portion 130 close to the first diameter section 110 and the second diameter section 120 is an acute angle or a right angle, it can prevent the insulating medium 200 from moving away from the first diameter section 110, thus forming an axial limiting structure together with the aforementioned stop surface.

[0044] Reference Figure 1 , In some embodiments, the insulating medium 200 is axially formed with a stepped portion 210. When the insulating medium 200 is assembled and fixed with the power connection pole 100 and during the process of being assembled and connected with the cavity filter 430, the stepped portion 210 on the insulating medium 200 abuts against the cavity filter 430 to limit the insulating medium 200 from moving away from the first diameter section 110.

[0045] Reference Figure 4 and Figure 5 , In the embodiment of the second aspect of the present application, a board-mounted metal cavity filter is proposed, which includes a substrate 410, a PCB board 420, a cavity filter 430 and the aforementioned connection structure. Among them, the PCB board 420 is fixedly arranged on the substrate 410, the cavity filter 430 is fixedly connected to the PCB board 420 by bolts, the insulating medium 200 in the connection structure is clamped in the cavity filter 430, and the conductive member 300 in the connection structure is welded to the PCB board 420.

[0046] Further, reference Figure 5 , An installation cavity 431 is provided on the cavity filter 430. When the cavity filter 430 is connected to the PCB board 420, an installation space for accommodating the connection structure is formed between the installation cavity 431 and the surface of the PCB board 420. Specifically, a stepped limiting portion is formed in the installation cavity 431 for cooperating with the stepped portion 210 on the insulating medium 200 to limit the insulating medium 200 and the power connection pole 100 from detaching from the conductive member 300, thus causing a poor contact situation.

[0047] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A connection structure for connecting a cavity filter on a board-mounted metal cavity filter to a PCB board, characterized in that: include: Connecting electric poles; An insulating medium is sleeved on the peripheral side of the power connection pole and its peripheral side is connected to the cavity filter; A conductive member is used to connect with the PCB board; the conductive member is arranged on one end side of the power connection rod, and the conductive member has a deformation portion in its axial direction, and the contact area between the conductive member and the power connection rod is smaller than the end surface area of ​​the power connection rod.

2. The connection structure according to claim 1, characterized in that: The conductive member comprises at least two deformable spring sheets which are centrally symmetrical and bent, and the bending directions of the deformable spring sheets are arranged opposite to each other.

3. The connection structure according to claim 2, characterized in that: The four deformable spring leaves are centrally symmetrically arranged.

4. The connection structure according to claim 2 or 3, characterized in that: Each of the deformable spring sheets is integrally formed.

5. The connection structure according to any one of claims 1 to 3, characterized in that: The connecting rod comprises a first diameter section and a second diameter section, the diameter of the first diameter section is larger than the diameter of the second diameter section, and the insulating medium is sleeved on the second diameter section and abuts against the end surface of the first diameter section.

6. The connection structure according to claim 5, characterized in that: A hooking portion is arranged on the circumference of the first diameter section of the power connection pole, and the hooking portion is inclined toward the second diameter section; a hooking groove is correspondingly arranged on the inner circumference of the insulating medium.

7. The connection structure according to claim 5, characterized in that: The insulating medium is formed with a step portion in the axial direction.

8. A board-mounted metal cavity filter, characterized in that: include: substrate; A PCB board is fixedly arranged on the substrate; A cavity filter is detachably arranged on the PCB board, and the connection structure according to claim 7 is connected between the cavity filter and the PCB board; Wherein, the conductive element is welded to the PCB board.

9. The board-mounted metal cavity filter according to claim 8, characterized in that: The cavity filter is provided with a mounting cavity. When the cavity filter is connected to the PCB board, the mounting cavity and the surface of the PCB board form an installation space for accommodating the connection structure.

10. The board-mounted metal cavity filter according to claim 9, characterized in that: A stepped hole is arranged on the side wall of the installation cavity, and the stepped hole is used for passing the power connection pole and fixing the insulating medium.

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