阅读说明：本技术 空腔滤波器及包括于其的连接器 (Cavity filter and connector comprising same ) 是由 朴南信 金丁会 张成号 于 2019-06-12 设计创作，主要内容包括：本发明涉及空腔滤波器及包括于其的连接器,尤其,涉及如下的空腔滤波器及包括于其的连接器,即,本发明包括：射频信号连接部,以与在一侧面设置有电极极板的外部部件隔开规定距离的方式设置；以及端子部,使上述外部部件的电极极板与上述射频信号连接部电连接,吸收存在于上述规定距离的装配公差,并预防上述电极极板与上述射频信号连接部之间的电流动的中断,上述端子部包括：一侧端子,与上述电极极板形成接点；以及另一侧端子,形成有收容上述一侧端子的一部分的收容空间,与上述射频信号连接部相连接,上述一侧端子由与装配人员提供的装配力相向地使一部分以放射状展开或收紧的弹性变形体形成,从而,提供如下的优点,即,有效地吸收通过装配设计产生的装配公差,通过防止电流动的中断来防止天线装置的性能降低。(The present invention relates to a cavity filter and a connector including the same, and more particularly, to a cavity filter and a connector including the same, the cavity filter including: a radio frequency signal connection part which is arranged in a manner of being separated from an external component with an electrode plate arranged on one side surface by a specified distance; and a terminal portion that electrically connects an electrode pad of the external member and the radio frequency signal connection portion, absorbs an assembly tolerance existing at the predetermined distance, and prevents interruption of an electric flow between the electrode pad and the radio frequency signal connection portion, the terminal portion including: a side terminal forming a contact with the electrode pad; and the other side terminal, there is a containing space for containing a part of the one side terminal, and the other side terminal is connected with the radio frequency signal connecting part, the one side terminal is formed by an elastic deformation body which expands or contracts a part in a radial shape opposite to the assembling force provided by an assembling person, thereby, the following advantages are provided, namely, the assembling tolerance generated by assembling design is effectively absorbed, and the performance of the antenna device is prevented from being reduced by preventing the interruption of current flow.)

1. A cavity filter, characterized in that,

the method comprises the following steps:

a radio frequency signal connection part which is arranged in a manner of being separated from an external component with an electrode plate arranged on one side surface by a specified distance; and

a terminal part for electrically connecting the electrode pad of the external member and the radio frequency signal connection part, absorbing an assembly tolerance existing in the predetermined distance, and preventing interruption of current flow between the electrode pad and the radio frequency signal connection part,

the terminal portion includes:

a side terminal forming a contact with the electrode pad; and

the other side terminal, which is formed with a containing space for containing a part of the one side terminal and is connected with the radio frequency signal connecting part,

the one-side terminal is formed of an elastic deformation body which is radially expanded or contracted in a direction opposite to an assembling force provided by an assembling worker.

2. The cavity filter according to claim 1, wherein the terminal portion is inserted into a terminal insertion port formed in a filter main body in which the radio frequency signal connection portion is provided.

3. The cavity filter according to claim 2, further comprising a dielectric inserted into the terminal insertion port so as to surround an outer side of the terminal portion.

4. The cavity filter of claim 3,

a terminal through hole for allowing the terminal portion to pass therethrough is formed in the dielectric,

a locking end is formed on one of the one-side terminal and the other-side terminal penetrating the terminal through-hole, and the locking end has a diameter larger than that of the terminal through-hole so as to be locked to the dielectric.

5. The cavity filter according to claim 1, wherein the one-side terminal is formed of a pad spring integrally formed with a contact portion forming a contact with the electrode pad.

6. The cavity filter according to claim 1, further comprising an elastic member provided in the housing space of the other side terminal and elastically supporting the one side terminal toward the electrode pad side.

7. The cavity filter according to claim 6, wherein said one-side terminal comprises:

a locking support plate which is provided to be locked inside the receiving space of the other side terminal; and

and an upper end protrusion extending toward the upper side of the locking support plate and forming a contact with the electrode pad.

8. The cavity filter according to claim 7, wherein the elastic member is formed of a pad spring which supports a lower end of the locking support plate of the one terminal.

9. The cavity filter according to claim 6, wherein said one-side terminal comprises:

a lower end protrusion part which is accommodated inside the accommodating space of the other side terminal and is inserted into a terminal guide hole formed in the accommodating space of the other side terminal; and

and an upper end protrusion extending upward of the lower end protrusion to form a contact with the electrode pad.

10. The cavity filter according to claim 7, wherein the elastic member is formed of a spacer spring that elastically supports the one-side terminal toward the electrode pad side by a locking rib formed to be locked between an upper end protrusion and a lower end protrusion of the one-side terminal.

11. A connector, characterized in that,

the method comprises the following steps:

a radio frequency signal connection part which is arranged in a manner of being separated from an external component with an electrode plate arranged on one side surface by a specified distance; and

a terminal part for electrically connecting the electrode pad of the external member and the radio frequency signal connection part, absorbing an assembly tolerance existing in the predetermined distance, and preventing interruption of current flow between the electrode pad and the radio frequency signal connection part,

the terminal portion includes:

a side terminal forming a contact with the electrode pad; and

the other side terminal, which is formed with a containing space for containing a part of the one side terminal and is connected with the radio frequency signal connecting part,

the one-side terminal is formed of an elastic deformation body which is radially expanded or contracted in a direction opposite to an assembling force provided by an assembling worker.

Technical Field

The present invention relates to a cavity filter and a CONNECTOR (CAVITY FILTER AND connecting apparatus INCLUDED IN THE SAME) INCLUDED therein, and more particularly, to a cavity filter for an antenna and a CONNECTOR INCLUDED therein, which improve a connection structure between the filter and a printed circuit board in a Massive antenna technology (Massive MIMO) in consideration of assembly and size.

Background

The contents described in this section merely provide background information related to the present embodiment and do not constitute conventional techniques.

A Multiple Input Multiple Output (MIMO) technique is a technique for greatly amplifying a data transmission capacity by using a plurality of antennas, and is a Spatial multiplexing (Spatial multiplexing) technique in which mutually different data is transmitted through respective transmission antennas at a transmitter and the transmission data is distinguished by appropriate signal processing at a receiver. Therefore, as the number of transmitting or receiving antennas is increased at the same time, the channel capacity is increased to transmit more data. For example, if the number of antennas is increased to 10, a channel capacity of about 10 times is secured by using the same frequency band as compared with the current single antenna system.

In 4G LTE-advanced, 8 antennas are used, and in the current pre-5G phase, products are being developed that install 64 or 128 antennas, and it is expected that base station equipment with more antennas will be used in 5G, which is called large-scale antenna technology. Compared to the current two-dimensional (2-Dimension) operation of the battery (Cell), 3D-Beamforming is possible if a large-scale antenna technology, also called Full-Dimension multiple-input multiple-output (FD-MIMO, Full Dimension), is introduced.

In the large-scale antenna technology, as the number of antenna devices increases, the number of transmitters and receivers and filters also increases. Also, with 2014 as a standard, 20 or more thousands of base stations have been installed in korea. That is, it is required to minimize an installation space, a structure of a cavity filter that can be simply installed, and a Radio Frequency (RF) signal line connection structure that provides the same filter characteristics after an individually tuned cavity filter is installed on an antenna.

A radio frequency filter having a cavity structure is characterized in that a resonator including a resonant rod or the like as a conductor is provided inside a box structure formed of a metallic conductor, and only an electromagnetic field of a natural frequency is present, and only a characteristic frequency of an ultrahigh frequency is passed by resonance. The above-described cavity structure has a small insertion loss of the band pass and the filter and is advantageous for high output, and is used as a filter of a mobile communication base station antenna in various ways.

Disclosure of Invention

Technical problem

An object of the present invention is to provide a cavity filter and a connector including the same, the cavity filter including: has a thinner and compact structure, and has a radio frequency connector built in the body along the thickness direction.

Another object of the present invention is to provide a cavity filter and a connector including the same, the cavity filter including: there is an assembly method that can minimize the cumulative amount of assembly tolerance generated when assembling a plurality of filters, and also has a radio frequency signal connection structure that is easy to install and uniformly maintains the frequency characteristics of the filters.

Another object of the present invention is to provide a cavity filter and a connector including the same, the cavity filter including: in the case of the separation type of the rf pin, the relative movement is allowed and the side tension is added, thereby preventing the loss of the signal.

Another object of the present invention is to provide a cavity filter and a connector including the same, the cavity filter including: the assembling tolerance between two parts needing electric connection is absorbed and the specified contact area is maintained, and meanwhile, the setting method is very simple.

The technical object of the present invention is not limited to the above-mentioned technical object, and other technical objects not mentioned can be clearly understood by the ordinary skilled person through the following description.

Technical scheme

An embodiment of the cavity filter of the present invention for achieving the above object includes: a radio frequency signal connection part which is arranged in a manner of being separated from an external component with an electrode plate arranged on one side surface by a specified distance; and a terminal portion that electrically connects an electrode pad of the external member and the radio frequency signal connection portion, absorbs an assembly tolerance existing at the predetermined distance, and prevents interruption of an electric flow between the electrode pad and the radio frequency signal connection portion, the terminal portion including: a side terminal forming a contact with the electrode pad; and the other side terminal, there is a containing space to contain part of the one side terminal, and the other side terminal is connected with the radio frequency signal connecting part, and the one side terminal is formed by an elastic deformation body which expands or contracts a part in a radial shape in opposite direction with the assembling force provided by an assembler.

The terminal portion is configured to be inserted into a terminal insertion opening formed in a filter main body in which the radio frequency signal connection portion is provided.

The present invention may further include a dielectric inserted into the terminal insertion port so as to surround the outside of the terminal portion.

In addition, a terminal through-hole through which the terminal portion penetrates may be formed in the dielectric, and a locking end having a diameter larger than that of the terminal through-hole may be formed in one of the one terminal and the other terminal penetrating the terminal through-hole so as to be locked to the dielectric.

The one terminal may be formed of a pad spring integrated with a contact portion forming a contact with the electrode pad.

The present invention may further include an elastic member disposed in the receiving space of the other side terminal and elastically supporting the one side terminal toward the electrode pad side.

Further, the one-side terminal may include: a locking support plate which is provided to be locked inside the receiving space of the other side terminal; and an upper end protrusion extending toward the upper side of the locking support plate and forming a contact with the electrode pad.

The elastic member may be formed of a pad spring that supports a lower end of the locking support plate of the one terminal.

Further, the one-side terminal may include: a lower end protrusion part which is accommodated inside the accommodating space of the other side terminal and is inserted into a terminal guide hole formed in the accommodating space of the other side terminal; and an upper end protrusion extending upward of the lower end protrusion to form a contact with the electrode pad.

The elastic member may be formed of a spacer spring that elastically supports the one-side terminal toward the electrode pad side by a locking rib formed between an upper end protrusion and a lower end protrusion of the one-side terminal.

An embodiment of the connector of the present invention comprises: a radio frequency signal connection part which is arranged in a manner of being separated from an external component with an electrode plate arranged on one side surface by a specified distance; and a terminal portion that electrically connects an electrode pad of the external member and the radio frequency signal connection portion, absorbs an assembly tolerance existing at the predetermined distance, and prevents interruption of an electric flow between the electrode pad and the radio frequency signal connection portion, the terminal portion including: a side terminal forming a contact with the electrode pad; and the other side terminal, there is a containing space to contain part of the one side terminal, and the other side terminal is connected with the radio frequency signal connecting part, and the one side terminal is formed by an elastic deformation body which expands or contracts a part in a radial shape in opposite direction with the assembling force provided by an assembler.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, there are effects that the radio frequency connector is built in the body in the thickness direction, a thinner and more compact structure can be designed, an assembly manner that can minimize the accumulation amount of assembly tolerance generated when a plurality of filters are assembled can be provided, a radio frequency signal connection structure that can be easily assembled and uniformly maintain the frequency characteristics of the filters can be designed, relative movement is allowed and side tension is given to stably connect, and thus, the degradation of the antenna performance can be prevented.

Drawings

Fig. 1 is a diagram schematically illustrating a laminated structure of an exemplary large-scale antenna technology antenna.

Fig. 2 is a sectional view showing a state in which a cavity filter according to an embodiment of the present invention is stacked between an antenna board and a control board.

Fig. 3 is a plan perspective view of the structure of the cavity filter of an embodiment of the present invention viewed from the bottom surface side.

Fig. 4 is an exploded perspective view showing a part of the structure of the cavity filter of the first embodiment.

Fig. 5 is a sectional view showing a cavity filter of the first embodiment of the present invention.

Fig. 6 is a perspective view showing a terminal portion in the structure of fig. 4.

Fig. 7 is an exploded perspective view showing a cavity filter according to a second embodiment of the present invention.

Fig. 8 is a sectional view showing a cavity filter of a second embodiment of the present invention.

Fig. 9 is a perspective view showing a terminal portion in the structure of fig. 7.

Fig. 10 is an exploded perspective view showing a cavity filter according to a third embodiment of the present invention.

Fig. 11 is a sectional view showing a cavity filter of a third embodiment of the present invention.

Fig. 12 is a perspective view showing a terminal portion in the structure of fig. 10.

Fig. 13 is an exploded perspective view showing a part of the structure of a cavity filter according to a fourth embodiment of the present invention.

Fig. 14 is a cross-sectional view showing a state where a terminal portion is inserted into the terminal insertion port in the structure of fig. 13.

Fig. 15 is a perspective view showing a terminal portion in the structure of fig. 13.

Fig. 16 is an exploded perspective view showing a part of the structure of a cavity filter according to a fifth embodiment of the present invention.

Fig. 17 is a cross-sectional view showing a state where the terminal portion is inserted into the terminal insertion port in the structure of fig. 16.

Fig. 18 is a perspective view showing a terminal portion in the structure of fig. 16.

Fig. 19 is an exploded perspective view showing a part of the structure of a cavity filter according to a sixth embodiment of the present invention.

Fig. 20 is a cross-sectional view showing a state where the terminal portion is inserted into the terminal insertion port in the structure of fig. 19.

Fig. 21 is a perspective view showing a terminal portion in the structure of fig. 19.

Fig. 22 is an exploded perspective view showing a part of the structure of a cavity filter according to a seventh embodiment of the present invention.

Fig. 23 is a cross-sectional view showing a state where the terminal portion is inserted into the terminal insertion port in the structure of fig. 22.

Fig. 24 is a perspective view showing a terminal portion in the structure of fig. 22.

Fig. 25 is a sectional view showing one embodiment of the connector of the present invention.

Description of reference numerals

20: cavity filter 21: filter body

25: terminal insertion port 27: setting groove

30: the filter module 31: radio frequency signal connection part

32: welding the hole 40: terminal section

50: one-side terminal 60: the other side terminal

70: dielectric 71: terminal through hole

80: elastic member 95: reinforcing plate

Detailed Description

Hereinafter, some embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Note that, in the process of assigning reference numerals to the constituent elements of each drawing, the same constituent elements are assigned the same reference numerals as much as possible even if they appear in different drawings. In addition, in the course of describing the embodiments of the present invention, in the case where it is judged that specific descriptions related to related well-known structures or functions hinder the understanding of the embodiments of the present invention, detailed descriptions thereof will be omitted.

In describing the components of the embodiment of the present invention, the terms first, second, A, B, (a), (b), and the like are used. Such terms are used only to distinguish one structural element from another structural element, and the nature, order, or sequence of the respective structural elements are not limited to the above terms. Also, unless otherwise defined, all terms used herein including technical or scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms having the same meaning as commonly defined in a dictionary have the same meaning as that of the context of the related art, and should not be construed as ideal or excessively formal meaning unless explicitly defined in the present application.

Fig. 1 is a diagram schematically illustrating a laminated structure of an exemplary large-scale antenna technology antenna.

Fig. 1 is a diagram showing only an exemplary external shape of an antenna device 1 incorporating an antenna assembly including a cavity filter according to an embodiment of the present invention, and does not limit the external shape when actually stacked.

The antenna device 1 includes: a case 2 formed with a Heat sink; and a radome 3(radome) combined with the housing 2. An antenna assembly may be built in between the housing 2 and the radome 3.

For example, the lower portion of the housing 2 is coupled to a Power Supply Unit 4 (PSU) by a docking structure, and the Power Supply Unit 4 supplies an operation Power source for operating a communication Unit provided in the antenna assembly.

In general, an antenna assembly has a structure in which Cavity filters 7(Cavity filters) are arranged on the back surface of an antenna board 5 having a plurality of antenna devices 6 arranged on the front surface thereof in the same number as the number of antennas, and then associated printed circuit boards 8 are laminated. Prior to assembly, the cavity filter 7 may be prepared for tuning and verification in detail so as to individually have a frequency characteristic in conformity with specifications. It is preferable to perform the tuning and verification process as described above quickly in a characteristic environment in which the assembled state is the same.

Fig. 2 is a sectional view showing a state in which a cavity filter according to an embodiment of the present invention is stacked between an antenna board and a control board.

Referring to fig. 2, the cavity filter 20 according to an embodiment of the present invention may exclude the conventional rf connector 90 shown in fig. 1, and thus, may provide an antenna structure that becomes easy to connect and has a lower height profile.

Further, the rf connection portions are provided on both side surfaces in the height direction and connected to the cavity filter 20 according to an embodiment of the present invention, so that the same rf connection is maintained even if vibration and thermal deformation occur in the antenna board 5 or the printed circuit board 8, thereby making the frequency characteristics unchanged.

Fig. 3 is a plan perspective view of the structure of the cavity filter of an embodiment of the present invention viewed from the bottom surface side.

Referring to fig. 3, a cavity filter 20 according to an embodiment of the present invention includes: a first housing (no reference numeral) including a radio frequency signal connection part 31 (refer to reference numeral 31 below fig. 4), the interior of which is hollow; a second housing (no reference numeral) covering the first housing; terminal portions (refer to reference numeral 40 in fig. 4) provided along the height direction of the cavity filter 20 on both sides in the length direction of the first housing; and a filter module 30 including a plurality of fitting holes 23 formed at both sides of the terminal portion 40. The terminal portion 40 penetrates the terminal insertion port 25 formed in the first housing to electrically connect the external part 8, such as an antenna board or an electrode pad (not labeled with a reference numeral) of the printed circuit board 8, with the radio frequency signal connection portion 31.

In the terminal portion 40 as described above, the lower end thereof in the drawing is supported by the radio frequency signal connection portion 31, and when the upper side is closely attached to the antenna board or the printed circuit board 8, the terminal portion is always elastically supported so as to be in contact with the electrode pad provided on one side surface of the external member 8 and to release the assembly tolerance existing in the terminal insertion port 25.

That is, as described later, in the cavity filter 20 of the present invention, the terminal portion 40 is provided separately as one side terminal and the other side terminal, and various embodiments can be implemented according to the shape for applying the side tension and the specific structure for absorbing the assembly tolerance.

In more detail, the terminal portion 40 is provided by two members separated between the upper side portion and the lower side portion on the drawing, and may be formed by a separation type in which a portion of one of the two members is inserted into a portion of the other member.

In general, although not shown, when the terminal portion 40 is formed of an integral filter, when a predetermined mounting force is applied by a mounting worker to remove a mounting tolerance, the terminal portion 40 is formed of an elastic body that is elastically deformed in a portion thereof. However, in the integral filter integrally formed with the terminal portion 40, it is impossible to predict the interruption of the flow of electric current from one end to the other end thereof, and it is not necessary to design an additional shape for additionally applying a side tension.

However, in the case where the terminal portion 40 is formed of a separate type filter separated into two parts, the release of the assembly tolerance allows the separated one-side terminal 50 and the other-side terminal 60 to move so as to overlap each other by the predetermined assembly force and allows the entire length to be contracted, and an additional elastic member 80 for extending and restoring the entire length when the assembly force is removed may be additionally provided. However, since the terminal portion 40 is separated into the one terminal 50 and the other terminal 60 and may cause interruption of current flow when they are moved to overlap each other, one of the one terminal 50 and the other terminal 60 is provided by an elastic body or requires an additional shape change for applying a side tension.

In particular, in the cavity filter 20 according to the embodiment of the present invention, the one-side terminal 50 is implemented by the elastic deformation body which is partially expanded or contracted in a radial shape in opposition to the assembling force provided by the assembler, so that the above-described function of the side tension can be implemented. Further, the elastically deformable portion of the one terminal 50 is deformed in a shape to be expanded or contracted radially, so that a contact ratio of the electrode pad of the external member 8 formed by one of the antenna board and the printed circuit board can be prevented from being lowered.

Wherein, as mentioned above, "lateral tension" is defined as follows: in order to prevent the interruption of the flow of electricity between the one side terminal 50 and the other side terminal 60, one of the one side terminal 50 and the other side terminal 60 transmits force toward the other in a direction different from the longitudinal direction.

On the other hand, in the case of designing the shape of the terminal portion 40 to be changed due to the characteristics of the antenna device, it is necessary to design the impedance matching in the terminal insertion port 25 at the same time, but in the detailed description of the embodiment of the cavity filter 20 of the present invention, the description is made with reference to a state where the impedance in the terminal insertion port 25 is matched. Therefore, in the structure of the embodiment of the cavity filter according to the present invention described with reference to fig. 4 and the following drawings, the external shape of the structure such as the dielectric or the reinforcing plate inserted into the terminal insertion port 25 together with the terminal portion 40 may be different in accordance with the impedance matching design.

Fig. 4 is an exploded perspective view showing a part of the structure of the cavity filter of the first embodiment, fig. 5 is a sectional view showing the cavity filter of the first embodiment of the present invention, and fig. 6 is a perspective view showing a terminal portion in the structure of fig. 4.

As shown in fig. 4 to 6, the cavity filter 20 according to the first embodiment of the present invention includes: a radio frequency signal connection portion 31 spaced apart from one side surface (assumed as an electrode pad) of the external member 8 by a predetermined distance; and a terminal part 40 for electrically connecting the electrode pad of the external member 8 and the radio frequency signal connection part 31, so that the assembly tolerance existing in the predetermined distance can be eliminated, and the phenomenon of current interruption between the electrode pad and the radio frequency signal connection part can be prevented.

As shown in fig. 2, the external component 8 may be a term generally referring to one of an antenna board on which a plurality of antenna devices are disposed on the other surface, or a printed circuit board of a single board (one-board) in which a Power Amplifier (PA), a Digital board (Digital board), and a TX Calibration (TX Calibration) are integrally formed.

Hereinafter, as shown in fig. 3, the external appearance of the embodiment constituting the cavity filter 20 of the present invention is not divided into a first case and a second case, and is collectively referred to as a filter main body 21 formed with a terminal insertion port 25, and is given a reference numeral 21.

As shown in fig. 4 to 5, the filter main body 21 may be formed with a hollow terminal insertion port 25. The form of the terminal insertion port 25 may be different according to the impedance matching design applied to a plurality of embodiments described later.

The spacer-provided portion 27 can be formed by grooving one side surface of the filter body 21, particularly one side surface of the filter body on which the one-side terminal 50 of the terminal portion 40 described later is provided. The spacer setting portion 27 may be formed by groove processing so as to have an inner diameter larger than the terminal insertion port 25, and may be configured to lock an outer edge portion of the star spacer 90 described later and prevent the separation upward.

Meanwhile, the cavity filter 20 of the first embodiment of the present invention may further include a star spacer 90 provided to be fixed to the spacer setting part 27.

Hereinafter, a description will be given of a case where the star-shaped pad 90 is provided in common in all embodiments of the present invention described later including the first embodiment of the present invention. Therefore, it is to be understood that the star liner 90 is included even if the star liner 90 is not additionally specifically described in other embodiments than the first embodiment.

In the star spacer 90, a fixed end 91 having a ring shape is fixed to the spacer setting part 27, and may include a plurality of support ends 92 formed obliquely upward from the fixed end 91 toward the center of the electrode pad side of the antenna board or the printed circuit board 8.

In the star spacer 90 as described above, in the case where the embodiment of the cavity filter 20 of the present invention is mounted on the antenna board or the printed circuit board 8 by the mounting person, the plurality of support ends 92 support one side surface of the antenna board or the printed circuit board 8 and apply an elastic force against the connection force by the connection member or the like, not shown, passing through the mounting hole.

The elastic force addition of the plurality of support terminals 92 as described above can uniformly maintain the contact area with respect to the electrode pad of the terminal part 40.

The ring-shaped fixed end 91 of the star spacer 90 is provided so as to surround the outside of the terminal portion 40 for transmitting an electrical signal, and functions as a Ground terminal (Ground terminal).

In turn, the star shaped gasket 90 serves to relieve assembly tolerances that exist between the antenna board or printed circuit board 8 of embodiments of the cavity filter 20 of the present invention.

However, as described later, the assembly tolerance absorbed by the star-shaped spacer 90 is present in the terminal insertion port 25, and is a concept different from the assembly tolerance absorbed by the terminal portion 40. That is, the cavity filter of the embodiment of the present invention is designed in such a manner that the overall assembly tolerance is absorbed in at least two places by the additional components in a single assembly process, so that more stable coupling can be achieved.

As shown in fig. 4 to 6, in the cavity filter 20 according to the first embodiment of the present invention, the terminal portion 40 may include: one terminal 50 connected to the electrode pad of the external member 8; and the other-side terminal 60 as the radio frequency signal connection portion 31 fixed to the soldering hole 32 at a portion elongated in a plate shape.

A part of the lower end of the one terminal 50 is accommodated in the other terminal 60. For this purpose, the upper end of the other terminal 60 may be recessed downward to form a receiving space for receiving and coupling a portion of the lower end of the one terminal 50.

In the one-side terminal 50, a contact portion 53 is formed at a distal end portion of the upper end portion 51, and may include a spring terminal portion 52 which forms a lower end portion and is elastically deformed by an assembling force provided by an assembler.

Among them, the spring terminal portion 52 is extended in a plurality of radially downward inclined directions from the lower side of the upper end portion 51 of the one terminal 50 where the contact portion 53 is formed, and the edge end portion can be locked and fixed to a spring installation groove 64 formed inside the housing space of the other terminal 60.

In the one-side terminal 50 having the above-described configuration, an upper end portion 51 of a contact terminal in the form of a rod provided in the terminal insertion port 25 so as to be movable in the vertical direction is integrally formed with a spring terminal portion 52 as an elastic member that elastically supports the upper end portion 51 toward the upper portion in the lower portion. In particular, the spring terminal portion 52 may be formed of an elastic deformation body in which portions corresponding to the fixed ends of the star spacer 90 described above are separated, and a portion corresponding to the support end of the star spacer 90 and a portion of the upper end portion 51 corresponding to the contact terminal are integrally formed.

Thus, when the fitting force by the fitter is applied through the contact portion 53 of the one terminal 50, the upper end portion 51 of the one terminal 50 can be released from the fitting tolerance existing in the terminal insertion port 25 by radially expanding or contracting in opposition to the fitting force applied by the fitter who presses downward and elastically deforms the spring terminal portion 52.

In this case, it is preferable that the portion corresponding to the fixed end of the star-shaped packing 90 in the structure of the spring terminal portion 52 is expanded and moved toward the inner peripheral wall of the spring installation groove 64 formed in the housing space of the other-side terminal 60 when being elastically deformed by the assembling force provided by the assembler.

On the other hand, as shown in fig. 4 and 5, cavity filter 20 according to the first embodiment of the present invention may further include dielectric 70 inserted for the purpose of impedance matching design inside terminal insertion port 25 in the relation with terminal portion 40 provided inside terminal insertion port 25. The dielectric member 70 may be formed with a terminal through-hole 71 through which the lower end portion 62 of the other terminal 60 passes.

The dielectric 70 may be made of Teflon (Teflon). However, the material of the dielectric 70 is not limited to teflon, and any material having a dielectric constant that can match impedance in the terminal insertion port 25 may be used instead.

In the dielectric 70, the lower edge end is locked to an insertion port support end 28 formed in the terminal insertion port 25, and supports the other terminal 60 provided so as to penetrate through the terminal through hole 71, and finally, the radio frequency signal connection portion 31 of the lower end portion 62 of the other terminal 60 is fixed by an assembling force reinforcing welder provided by an assembling worker.

Both the one terminal 50 and the other terminal 60 are made of an electrically conductive material for flowing electricity, and even if the terminal portion 40 disposed in the terminal insertion port 25 is divided into two or more, the interruption of the flow of electricity can be prevented by elastic deformation of the spring terminal portion 52 of the one terminal 50 within a limit where the antenna board or the printed circuit board 8 is brought into close contact with the one terminal 50 by the assembling force of the assembler.

Hereinafter, an assembly tolerance absorbing process of the assembly of the cavity filter 20 according to the first embodiment of the present invention having the above-described structure will be described with reference to the drawings (particularly, fig. 5).

First, as shown in fig. 5, the cavity filter 20 according to the first embodiment of the present invention is brought into close contact with one side surface of the antenna board or the printed circuit board 8 on which the electrode pads are provided, and then a predetermined connection force is transmitted to the cavity filter 20 by the operation of connecting the connection member, not shown, to the mounting hole. However, it is not necessary to attach the cavity filter 20 to one side surface of the antenna board or the printed circuit board 8, and on the contrary, it is also possible to transmit the mounting force by attaching the cavity filters 20 aligned at predetermined intervals to one side surface of the antenna board or the printed circuit board 8.

Then, as shown in fig. 5, the distance between the antenna board or printed circuit board 8 and the cavity filter 20 of the first embodiment of the present invention is reduced, and at the same time, the shape of the support end 92 of the star-shaped spacer 90 is deformed by the above-mentioned connecting force, thereby absorbing the assembly tolerance existing between the cavity filter 20 of the first embodiment of the present invention and the antenna board or printed circuit board 8 for the first time.

At the same time, the spring-supported end 52 of one terminal 50 in the terminal portion 40 is elastically deformed to be pressed, thereby secondarily absorbing the assembly tolerance existing in the terminal insertion port 25.

In the process that the assembling force provided by the assembling personnel is continuously remained through the connecting unit, the spring supporting end 52 is closely attached to the bottom surface of the accommodating space of the other terminal 60, so that the phenomenon that the current flowing between the one terminal 50 and the other terminal 60 is interrupted can be prevented.

Fig. 7 is an exploded perspective view showing a cavity filter according to a second embodiment of the present invention, fig. 8 is a cross-sectional view showing the cavity filter according to the second embodiment of the present invention, and fig. 9 is a perspective view showing a terminal portion in the structure of fig. 7.

As shown in fig. 7 to 9, in the cavity filter 20 according to the second embodiment of the present invention, the terminal part 140 may include: one-side terminal 150 connected to an electrode pad of external member 8; the other-side terminal 160 fixed to a welding hole 32 formed in the plate of the radio frequency signal connection part 31; and an elastic member 180 disposed between the one-side terminal 150 and the other-side terminal 160, for elastically supporting the one-side terminal 150 in opposition to an assembling force provided by an assembler.

Among them, a part of the lower end of one terminal 150 (see the locking support plate 151 described later) can be housed inside the other terminal 160. For this, an accommodating space is formed at the upper end of the other terminal 160 to be downwardly recessed to be accommodated and coupled with a portion of the lower end of the one terminal 150.

The one-side terminal 150 may include: a locking support plate 151 which is accommodated in the accommodating space of the other terminal 160 and is locked in the accommodating space of the other terminal 160 to prevent the upper part of the one terminal 150 from being separated; the upper end protrusion 152 is formed with a contact 153 protruding upward from the upper surface of the locking support plate 151 by a predetermined length to contact an electrode pad provided on the antenna board or the printed circuit board 8.

On the other hand, the elastic member 180 is provided on the bottom surface of the inside of the receiving space of the other side terminal 160 and faces the lower surface of the locking support plate 151 of the upper side elastic support side terminal 150. The elastic member 180 is an elastic deformation body that elastically supports a portion (a plurality of support ends described later) of the one-side terminal 150 by a length equal to a distance by which the one-side terminal 150 is pressed downward by an assembling force of an assembler, so as to radially spread or contract, thereby absorbing an assembling tolerance existing in the terminal insertion port 25.

The elastic member 180 may be a packing spring smaller than the star packing 90, and may have substantially the same shape as the star packing 90 described in the first embodiment. Therefore, in the pad spring, a fixed end (no reference numeral) having a ring shape is fixed to a spring installation groove 164 described later, and includes a plurality of support ends (no reference numeral) formed obliquely upward from the fixed end toward the center of the lower surface of the locking support plate 151 of the one-side terminal 150.

Meanwhile, as shown in fig. 7, in the receiving space of the other terminal 160, an upper end surface 161 is formed to be depressed downward to receive the locking support plate 151 of the one terminal 150, and a spring installation groove 164 to which a fixed end of the pad spring formed by the elastic member 180 is fixedly installed may be formed.

As shown in fig. 7 and 8, cavity filter 20 according to the second embodiment of the present invention may include dielectric 170 inserted for impedance matching design inside terminal insertion port 25 in a relation with terminal portion 140 provided inside terminal insertion port 25. The dielectric 170 may be formed with a terminal through-hole 171 through which the lower end portion 162 of the other side terminal 160 passes.

In the cavity filter 20 of the second embodiment of the present invention having the above-described structure, the star-shaped gasket 90 releases the assembly tolerance existing between the antenna boards or the printed circuit board 8, and at the same time, the assembly tolerance existing in the terminal insertion port 25 can be released by the gasket spring as the elastic member 180.

Fig. 10 is an exploded perspective view showing a cavity filter according to a third embodiment of the present invention, fig. 11 is a sectional view showing the cavity filter according to the third embodiment of the present invention, and fig. 12 is a perspective view showing a terminal portion in the structure of fig. 10.

As shown in fig. 10 to 12, in the cavity filter 20 according to the third embodiment of the present invention, the terminal part 240 may include: one-side terminal 250 connected to the electrode pad of external member 8; the other-side terminal 260 fixed to the soldering hole 32 formed in the plate of the radio frequency signal connection part 31; and an elastic member 280 disposed between the one-side terminal 250 and the other-side terminal 260, for elastically supporting the one-side terminal 250 in opposition to an assembling force applied by an assembling worker.

A part of the lower end of the one terminal 250 (see a lower end protrusion 251 to be described later) is accommodated in a terminal guide hole 263 formed in the other terminal 260. Therefore, an accommodating space may be formed in the upper end portion of the other terminal 260 so as to be recessed downward, and the upper end portion may be coupled to a portion 251 of the lower end portion of the one terminal 250. Meanwhile, the above-described terminal guide hole 263 may be formed in the bottom surface in the receiving space of the other side terminal 260.

The one-side terminal 250 may include: a lower end protrusion 251 which is accommodated in the accommodating space of the other terminal 260 and is inserted into a terminal guide hole 263 formed in the accommodating space of the other terminal 260; and an upper end protrusion 252 having a contact portion 253 formed to be in contact with an electrode pad provided on the antenna board or the printed circuit board 8.

As described later, the one-side terminal 250 may further include a locking rib 254 formed between the lower end protruding portion 251 and the upper end protruding portion 252 so as to be locked to the elastic member 280 formed of a pad spring.

On the other hand, the elastic member 280 is provided on the inner bottom surface of the receiving space of the other side terminal 260 and elastically supports the one side terminal 250 toward the upper side. The elastic member 280 serves as an elastic deformation body to elastically support a portion (a plurality of support ends described later) supporting the one terminal 250 in a radially expanded or contracted manner by a length equal to a distance by which the one terminal 250 is pressed downward by an assembling force of an assembler, thereby absorbing an assembling tolerance existing in the terminal insertion port 25.

In more detail, the elastic member 280 may be formed of a pad spring as has been described in the second embodiment.

Therefore, in the elastic member 280, a fixed end (not numbered) having a ring shape is fixed to a spring installation groove 264 described later, and may include a plurality of support ends (not numbered) formed obliquely upward from the fixed end toward the locking rib 254 of the one terminal 250.

Meanwhile, as shown in fig. 10, in the receiving space of the other side terminal 160, an upper end surface 261 is formed to be depressed downward to receive the lower end protrusion 251 of the one side terminal 250, and a spring installation groove 264 to which a fixed end of a pad spring formed of an elastic member 280 is fixedly installed may be formed.

According to the third embodiment of the present invention having the above-described structure, the one side terminal 250 and the other side terminal 260 are formed of the conductive material, and the pad spring as the elastic member 280 provided between the one side terminal 250 and the other side terminal 260 to provide the elastic force is also formed of the conductive material, so that it is not necessary to additionally provide a tension cut portion for adding a side tension in order to prevent the interruption of the current flow.

On the other hand, the structure of the dielectric 270 inserted for impedance matching in the terminal insertion port 25 and other components is similar or identical to that of the cavity filter 20 of the second embodiment, and the detailed description thereof is replaced by the description of the second embodiment.

Fig. 13 is an exploded perspective view showing a structure of a part of a cavity filter according to a fourth embodiment of the present invention, fig. 14 is a cross-sectional view showing a state where a terminal portion is inserted into a terminal insertion port in the structure of fig. 13, and fig. 15 is a perspective view showing the terminal portion in the structure of fig. 13.

As shown in fig. 13 to 15, a cavity filter 20 according to a fourth embodiment of the present invention may include a terminal portion 340, where the terminal portion 340 may include: a one-side terminal 350 disposed on the upper side of the terminal insertion port 25 and capable of contacting an electrode pad formed on one side surface of the external component 8 formed of one of the antenna board and the printed circuit board; and the other terminal 360 disposed below the terminal insertion port 25, receiving a part of the lower end of the one terminal 350 by forming a terminal receiving hole (not denoted by a reference numeral), and fixed by welding to a welding hole 32 formed in the plate of the rf signal connection portion 31.

The terminal part 340 may further include an elastic member 380 which is provided inside the terminal receiving hole and is formed of a spring elastically supporting the lower surface 351 of the one-side terminal 350 toward the upper side where the external member 8 formed of one of the antenna board and the printed circuit board is provided.

As shown in fig. 13 and 14, the one-side terminal 350 is formed to be bent substantially in a U-shape, and may be formed in a clip shape so that two contact surfaces are formed at an upper end. Preferably, the contact portion 352 of the one-side terminal 350, which is formed with two contact surfaces at the upper end surface, is formed to be curved in a circular arc shape to minimize a contact area with respect to the electrode pad.

On the other hand, as shown in fig. 13 and 14, the cavity filter 20 according to the fourth embodiment of the present invention may further include a reinforcing plate 395 disposed in the terminal insertion port 25 and having a terminal insertion hole 397 through which the other side terminal 360 is inserted.

Here, the function of the reinforcing plate 395 has been described in detail in the above embodiments, and a detailed description will be omitted.

In the cavity filter 20 according to the fourth embodiment of the present invention, particularly, the contact portion 352 of the one-side terminal 350, which performs a function as an elastic deformation body, is pressed downward by an assembling force provided by an assembling worker to be elastically deformed so as to be spread or contracted radially outward, and at the same time, is continuously elastically supported toward the electrode pad side by the elastic member 480, so that a stable current flow can be generated by preventing a phenomenon in which the contact surface is reduced or increased as needed.

Fig. 16 is an exploded perspective view showing a structure of a part of a cavity filter according to a fifth embodiment of the present invention, fig. 17 is a cross-sectional view showing a state where a terminal portion is inserted into a terminal insertion port in the structure of fig. 16, and fig. 18 is a perspective view showing the terminal portion in the structure of fig. 16.

As shown in fig. 16 to 18, the cavity filter 20 according to the fifth embodiment of the present invention may include a terminal portion 440, and the terminal portion 440 may include: one terminal 450, which is disposed on the upper side of the terminal insertion opening 25 and is capable of contacting an electrode pad on one side of the external component 8 formed by one of the antenna board and the printed circuit board; and the other terminal 460 disposed below the terminal insertion port 25, having a terminal receiving hole (not denoted by a reference numeral) for receiving a part of the lower end of the one terminal 450, and welded and fixed to the welding hole 32 formed in the plate of the rf signal connection portion 31.

Compared to the cavity filter 20 of the fourth embodiment described previously, in the cavity filter 20 of the fifth embodiment of the present invention, the one-side terminal 450 may further include: a contact protrusion 452' having two contact surfaces protruding upward from the contact portion 452 in a protruding shape; and a separation preventing projection 451' formed to protrude from a side surface 451 of the one-side terminal 450 to be locked in the terminal receiving hole of the other-side terminal 460.

The contact protrusion 452' can shape the contact area of the contact portion 452 with respect to the electrode pad formed on one side surface of the external member 8 formed of one of the antenna board and the printed circuit board. Therefore, the one-side terminal 450 is elastically supported by the elastic member 480 in the structure of the cavity filter 20 according to the fifth embodiment so as to maintain the contact area within the limit of the contact with the electrode pad.

The remaining structure other than this is the same as the structure of the cavity filter 20 of the fourth embodiment, and the detailed description is replaced by the description of the fourth embodiment.

Fig. 19 is an exploded perspective view showing a structure of a part of a cavity filter according to a sixth embodiment of the present invention, fig. 20 is a cross-sectional view showing a state where a terminal portion is inserted into a terminal insertion port in the structure of fig. 19, and fig. 21 is a perspective view showing the terminal portion in the structure of fig. 19.

As shown in fig. 19 to 21, in the cavity filter 20 according to the sixth embodiment of the present invention, the terminal part 540 may include: a one-side terminal 550 disposed on the upper side of the terminal insertion port 25 and capable of contacting an electrode pad formed on one side surface of the external part 8 formed of one of the antenna board and the printed circuit board; the other terminal 560 is disposed below the terminal insertion port 25, has a terminal receiving hole (not denoted by a reference numeral) for receiving a part of the lower end of the one terminal 550, and is welded and fixed to the welding hole 32 formed in the plate of the rf signal connection portion 31.

However, in the cavity filter 20 according to the sixth embodiment of the present invention, the one-side terminal 550 may further include, as in the cavity filter 20 according to the fifth embodiment described above: a contact protrusion 552' having two contact surfaces protruding upward from the contact portion 552; and a separation preventing projection 551' formed to protrude from a side surface 551 of the one-side terminal 550 and engaged with the inside of the terminal receiving hole of the other-side terminal 560.

Meanwhile, the cavity filter 20 according to the sixth embodiment of the present invention may further include a separation preventing housing 555 which is received in the terminal receiving hole of the other terminal 560 and is received in the one terminal 550 to prevent the outer portion of the one terminal 550 from being separated.

The separation prevention case 555 is formed with a guide groove portion 557 which is cut so that the contact protrusion 552 'and the separation prevention protrusion 551' of the one-side terminal 550 protrude toward the protrusion in the structure of the cavity filter 20 according to the sixth embodiment.

The contact protrusion 552 'of the one terminal 550 may protrude toward the upper side 556 of the guide groove portion 557 to be in contact with the electrode pad, and the separation preventing protrusion 551' of the one terminal 550 may also protrude toward the left and right side portions of the guide groove portion 557 to be locked inside the terminal receiving hole.

The detachment prevention housing 555 has an inner space for receiving the one side terminal 550, and prevents a phenomenon in which the one side terminal 550 is deformed due to excessive deformation beyond a yield point (a threshold value for elastic recovery again) when elastically deformed by an assembling force of an assembling person.

The remaining structure other than this adopts the same structure as the cavity filter 20 of the fifth embodiment, and the detailed description is replaced by the fifth embodiment.

Fig. 22 is an exploded perspective view showing a structure of a part of a cavity filter according to a seventh embodiment of the present invention, fig. 23 is a cross-sectional view showing a state where a terminal portion is inserted into a terminal insertion port in the structure of fig. 22, and fig. 24 is a perspective view showing the terminal portion in the structure of fig. 22.

As shown in fig. 22 to 24, in the cavity filter 20 according to the seventh embodiment of the present invention, in addition to the structure of the cavity filter 20 according to the sixth embodiment, the guide grooves 657 formed in the separation preventing case 655 may be shaped like "+".

Unlike the terminal portion 540 of the cavity filter 20 according to the sixth embodiment in which the guide grooves 557 of the detachment prevention housing 555 are formed by being cut in a "-" shape, in the terminal portion 640 of the cavity filter 20 according to the seventh embodiment of the present invention, the guide grooves 657 are formed by being cut in a "+" shape in the detachment prevention housing 655, and a predetermined elastic restoring force by an external force can be applied to the detachment prevention housing 655 by itself.

The configuration other than this is the same as that of the cavity filter 20 of the sixth embodiment, and the detailed description is replaced by the description of the sixth embodiment.

Fig. 25 is a sectional view showing one embodiment of the connector of the present invention.

The various embodiments of the cavity filter of the present invention described above are described as being limited to the form manufactured as a module to be attached to one side of the external part 8 such as the antenna board or the printed circuit board. However, the embodiment of the present invention is not limited to this, and as shown in fig. 25, it is possible to realize a connector 1 'including a terminal portion 40 provided between an electrode pad provided on one side surface of the external member 8 and the terminal portion 40 to electrically connect with another connecting member 31', regardless of whether or not the module form is manufactured.

The above description is merely an exemplary illustration of the technical idea of the present invention, and various modifications and variations can be made by those skilled in the art without departing from the essential characteristics of the present invention.

Therefore, the embodiments disclosed in the present invention are intended to explain the technical ideas of the present invention, but not to limit the technical ideas of the present invention, and the scope of the technical ideas of the present invention is not limited to the above-described embodiments. The scope of the invention is to be construed in accordance with the substance defined by the following claims, and all technical ideas within the scope and range equivalent to the substance defined by the claims are included in the claims.

Industrial applicability

The invention provides a cavity filter and a connector comprising the same, wherein the cavity filter comprises: the radio frequency connector is built in the body in the thickness direction, a thinner and more compact structure can be designed, an assembling manner can be provided in which the accumulative amount of assembling tolerance generated when assembling a plurality of filters is minimized, a radio frequency signal connecting structure which is easily assembled and uniformly maintains the frequency characteristic of the filters can be designed, relative movement is allowed and lateral tension is given to stably connect, and thus the degradation of the antenna performance can be prevented.