Patent Application
20230087867
The present invention relates to a connector for preventing a characteristic impedance mismatch, and more particularly, to a connector for preventing a characteristic impedance mismatch, which is capable of being more slimly manufactured while maintaining desired impedance matching.
In general, an RF connector for wireless communication is designed to have characteristic impedance of 50Ω. The characteristic impedance is set when a connector is matched.
In the case of microwave engineering, it has been known that impedance of 33Ω implements the best power transmission characteristics in respect to electromagnetic wave energy, and impedance of about 75Ω makes the smallest distortion of a signal waveform, and impedance of 50Ω, which is an intermediate value that favorably satisfies both the characteristics, is used as the characteristic impedance.
In particular, because an entire circuit of a mobile communication system is designed to have impedance of 50Ω, there is a problem in that there is no compatibility when the connector finds another impedance. Further, there is a problem in that when a difference between 50Ω and the characteristic impedance of the connector increases, the signal waveform is distorted, and the power transmission characteristics deteriorate.
The problem of the distortion of the signal waveform or the deterioration of the power transmission characteristics becomes severer during a process of absorbing an assembling tolerance of the RF connector that electrically connects contact parts of two substrates.
For example,
More specifically, as illustrated in
In this case, to prevent the characteristic impedance mismatch, an elastic member 410 provided in the form of a coil spring is accommodated in the hollow portion 210a of the stationary body 210 and the hollow portion 110a of the contact body 110. The elastic member 410 is fixed by the stationary insulator 230 and the contact insulator 130 that are made of dielectric materials having predetermined permittivity. One end of the elastic member 410 is supported on the stationary body 210, and the other end of the elastic member 410 is supported on the contact body 110. The elastic member 410 maintains a predetermined contact force by elastically supporting the contact body 110 on the second panel while being compressed and extended by an external force transmitted during an assembling process.
The registered patent document provides an advantage of easily absorbing an assembling tolerance between the first and second panels during the process of assembling the stationary modules 210 and 220 and the contact modules 110 and 120. However, there is a problem in that the elastic member 410 provided in the form of a coil spring needs to be designed at a position, which at least deviates from the hollow portion 210a of the stationary body 210 and the hollow portion 110a of the contact body 110, to prevent the characteristic impedance mismatch.
That is, the registered patent document discloses that as illustrated in
The present invention has been made in an effort to solve the above-mentioned technical problems, and an object of the present invention is to provide a connector for preventing a characteristic impedance mismatch, which is capable of preventing the characteristic impedance mismatch.
Further, another object of the present invention is to provide a connector for preventing a characteristic impedance mismatch, which has a slimmer shape.
In addition, still another object of the present invention is to provide a connector for preventing a characteristic impedance mismatch, which may have a reduced size and thus be disposed with high density in a communication apparatus.
Technical problems of the present invention are not limited to the aforementioned technical problems, and other technical problems, which are not mentioned above, may be clearly understood by those skilled in the art from the following descriptions.
One exemplary embodiment according to the present invention provides a connector for preventing a characteristic impedance mismatch, the connector including: a stationary module fixed, by soldering, to any one (hereinafter, referred to as a ‘first panel’) of two panels disposed in parallel with each other, the stationary module having therein an impedance matching space (hereinafter, referred to as a ‘matching space’); a moving module disposed to move to the inside or outside of the matching space of the stationary module and provided to be in contact with the other (hereinafter, referred to as a ‘second panel’) of the two panels; and an elastic member disposed in the matching space of the stationary module and configured to elastically support the moving module on the second panel, in which the moving module includes: a moving terminal pin made of a conductive material and having one end being in contact with the second panel, and the other end configured to establish an electrical signal line between the moving terminal pin and the first panel by means of the stationary module; a moving insulator provided to surround a part of an outer peripheral surface of the moving terminal pin and disposed to implement a characteristic impedance matching design value in the matching space, the moving insulator having predetermined permittivity; and an external conductor part disposed between the moving insulator and the stationary module and disposed to prevent the elastic member from being in direct contact with at least any one of the moving insulator and the moving terminal pin, the external conductor part being configured to transmit an elastic supporting force of the elastic member to the moving insulator.
In this case, the stationary module may include: a stationary housing having the matching space; a stationary insulator configured to block one side of the matching space of the stationary housing; and a stationary terminal pin having one end being in contact with the first panel while penetrating the stationary insulator, and the other end electrically connected to the moving terminal pin, one end of the elastic member may be supported in the stationary housing without being in contact with the stationary insulator, and the other end of the elastic member may be supported on the external conductor part without being in contact with the moving insulator.
In addition, the one end and the other end of the elastic member may each have the largest coil diameter, and the coil diameter may gradually decrease toward a middle portion.
In addition, the elastic member may be shaped to have a constant coil diameter.
In addition, one end of the elastic member may be supported on a stationary part resonance prevention rib protruding inward from the stationary housing so that one end of the elastic member is not in contact with the stationary insulator, and the other end of the elastic member may be supported on a moving part resonance prevention rib protruding inward from the external conductor part so that the other end of the elastic member is not in contact with the moving insulator.
In addition, one end of the elastic member may be supported on a stationary part resonance prevention rib protruding inward from the stationary housing so that one end of the elastic member is not in contact with the stationary insulator, and the other end of the elastic member may be supported at a tip of the external conductor part.
In addition, the external conductor part may include: an external conductor main body configured such that an inner peripheral surface thereof surrounds an outer peripheral surface of the moving insulator, and a part of an outer peripheral surface thereof is caught in the matching space of the stationary housing and restricts a movable distance (hereinafter, referred to as a ‘moving section’) between the first and second panels; and an external conductor guide extending from the external conductor main body toward the first panel and configured to slip on an inner peripheral surface of the stationary housing when the external conductor main body moves.
In addition, a part of the external conductor main body may be formed to have an outer diameter corresponding to the inner peripheral surface of the stationary housing, and the stationary housing may include one side catching portion configured to catch the external conductor main body while defining one end of the moving section, and the other side catching portion configured to catch the external conductor main body while defining the other end of the moving section and formed to be stepped.
In addition, the external conductor guide may extend so that a tip thereof is closer to the first panel than the one side catching portion.
In addition, the connector may further include a cover signal leak blocking member provided on the stationary module and configured to prevent an electrical signal leak through a cover housing that mediates coupling of the stationary module to the first panel.
In addition, the connector may further include a second panel signal leak blocking member provided on the moving module and configured to prevent an electrical signal leak through the second panel.
In addition, the cover signal leak blocking member or the second panel signal leak blocking member may each be made of a conductor material and elastic material.
In addition, the stationary insulator may be shaped to surround an entire outer peripheral surface of the stationary terminal pin except for a portion exposed to the first panel.
In addition, the stationary terminal pin connected to the moving terminal pin may have a hollow portion into which a part of the moving terminal pin is inserted while overlapping the hollow portion, and the hollow portion may be formed by being cut out by a plurality of cut-out portions.
The embodiment of the connector for preventing a characteristic impedance mismatch according to the present invention may achieve the following various effects.
First, the function of blocking static electricity is provided by the external conductor part and the elastic member, which makes it possible to prevent a characteristic impedance mismatch in the impedance matching space.
Second, the degree of design freedom related to the installation position of the elastic member is improved, which makes it possible to manufacture the overall slim product.
Third, the slim product may be disposed with high density in the communication apparatus, which makes it possible to improve communication efficiency.
The effects of the present invention are not limited to the aforementioned effects, and other effects, which are not mentioned above, will be clearly understood by those skilled in the art from the claims.
Hereinafter, various embodiments of a connector for preventing a characteristic impedance mismatch according to the present invention will be described below in detail with reference to the accompanying drawings.
In giving reference numerals to constituent elements of the respective drawings, it should be noted that the same constituent elements will be designated by the same reference numerals, if possible, even though the constituent elements are illustrated in different drawings. Further, in the following description of the embodiments of the present invention, a detailed description of related publicly-known configurations or functions will be omitted when it is determined that the detailed description obscures the understanding of the embodiments of the present invention.
In addition, the terms first, second, A, B, (a), and (b) may be used to describe constituent elements of the embodiments of the present invention. These terms are used only for the purpose of discriminating one constituent element from another constituent element, and the nature, the sequences, or the orders of the constituent elements are not limited by the terms. Further, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by those skilled in the art to which the present invention pertains. The terms such as those defined in commonly used dictionaries should be interpreted as having meanings consistent with meanings in the context of related technologies and should not be interpreted as ideal or excessively formal meanings unless explicitly defined in the present application.
As illustrated in
In this case, the first and second panels B1 and B2 may each be a printed circuit board (PCB). In addition, the first panel B1 may be a printed circuit board. The second panel B2 may be an RF connection part (see
A cover housing 5 may be separately provided between the first and second panels B1 and B2 and securely fix the connector for preventing a characteristic impedance mismatch according to the present invention.
More specifically, as illustrated in
In this case, to connect an electrical signal to the second panel B2, a signal path 7 having a predetermined diameter is formed to be opened in the cover housing 5. The other end of the connector for preventing a characteristic impedance mismatch according to the present invention penetrates and is exposed through the signal path 7. The second panel B2 may come into close contact with the portion exposed through the signal path 7.
Referring to
The cover signal leak blocking member 70 and the second panel signal leak blocking member 80 may serve to prevent a signal leak to the outside from the electrical signal line established to penetrate an approximately center between the cover signal leak blocking member 70 and the second panel signal leak blocking member 80. Further, the cover signal leak blocking member 70 and the second panel signal leak blocking member 80 may each be made of a conductive material and thus also serve as a ground terminal. Further, the cover signal leak blocking member 70 and the second panel signal leak blocking member 80 may each be made of an elastic material and thus also serve to absorb an assembling tolerance while being stably elastically supported on the cover housing 5 and the second panel B2 even though external force such as an assembling force is transmitted.
Referring to
Meanwhile, in case that the second panel B2 is configured as a radio frequency (RF) connector having an antenna element and the like, the second panel B2 may further include a contact terminal B21, a fixing block B22 configured to fix the contact terminal B21, and a filter-side signal leak blocking member B25 provided outside a rim of the signal path 7 of the cover housing 5 and configured to prevent a signal leak.
One end of the filter-side signal leak blocking member B25 may be fixedly installed on a blocking member installation groove B23 recessed in the second panel B2, and the other end of the filter-side signal leak blocking member B25 may be elastically supported on an outer surface of the rim of the signal path 7 of the cover housing 5.
Hereinafter, for convenience of description, the embodiment described with reference to
As illustrated in
The stationary module F is fixed, by soldering, to the first panel B1 that is one of the two panels disposed in parallel with each other. The stationary module F may have an impedance matching space 90 (hereinafter, referred to as a ‘matching space’) therein.
The moving module M may be disposed to move to the outside or inside of the matching space 90 of the stationary module F. The moving module M may come into contact with the second panel B2.
Further, as illustrated in
In the connector for preventing a characteristic impedance mismatch according to the first embodiment that is configured as described above, the stationary module F and a part of the moving module M are provided to transmit power, thereby establishing the electrical signal line.
More specifically, as illustrated in
The stationary housing 10 may be made of a conductive material, or an inner peripheral surface of the stationary housing 10, which defines the matching space 90, is plated with a conductive material, such that the characteristic impedance matching may easily designed in the matching space 90.
The inner peripheral surface of the stationary housing 10 may have a plurality of stepped portions having different inner diameters.
More specifically, a portion of the matching space 90 of the stationary housing 10, which is close to the first panel B1, may have a stationary part resonance prevention rib 12 by which one end of the elastic member 60 and the stationary insulator 30 are divided and caught. Further, one side catching portion 14 and the other side catching portion 16 may be formed to be stepped on a portion of the matching space 90 of the stationary housing 10, which is close to the second panel B2, and restrict a movable distance (hereinafter, referred to as a ‘moving section’) of the external conductor part 40′ among the components of the moving module M to be described below. Further, a stopper stepped portion 13 may be further formed on the inner peripheral surface of the stationary housing 10 and restrict a movement of a tip 43′ of an external conductor guide 42′ of the external conductor part 40′ to be described below.
In addition, a plurality of solder legs 11 may be integrally formed at one end of the stationary housing 10 (i.e., a portion corresponding to the first panel B1). The plurality of solder legs 11 may be inserted into solder holes (no reference numeral) formed in advance in the first panel B1, and then the plurality of solder legs 11 may be coupled by soldering. In this case, a stationary pin portion 21 of the stationary terminal pin 20, which will be described below, may be inserted into a hole (no reference numeral) of the contact part formed on the first panel B1, and then the stationary pin portion 21 may be coupled by soldering.
The stationary terminal pin 20 may be made of a conductive material and connected to the moving terminal pin 20′ so that an electrical signal may be transmitted therebetween.
More specifically, the stationary terminal pin 20 may include the stationary pin portion 21 extending from the matching space 90 toward the first panel B1 and protruding outward, a pin main body portion 23 having a larger diameter than the stationary pin portion 21, and a hollow pin portion 25 extending from the pin main body portion 23 toward the second panel B2 and having therein a hollow portion (no reference numeral) into which a part of a moving pin portion 21′ of the moving terminal pin 20′ to be described below is inserted.
A catching projection 22 may be formed on a boundary between the stationary pin portion 21 and the pin main body portion 23 by a difference in diameter. The stationary insulator 30 may be caught by the catching projection 22, such that the stationary housing 10 may be prevented from being withdrawn to the outside.
The hollow portion of the hollow pin portion 25 is opened in a direction in which the moving terminal pin 20′ is provided. A part of an outer peripheral surface of the hollow pin portion 25 may have a plurality of hollow cut-out portions 26 formed to be cut so that the inside and outside of the hollow pin portion 25 communicate with each other. The plurality of hollow cut-out portions 26 provides predetermined lateral tension to an outer peripheral surface of the moving pin portion 21′ of the moving terminal pin 20′ inserted into the hollow portion, which makes it possible to prevent disconnection of the electrical signal connection between the stationary terminal pin 20 and the moving terminal pin 20′.
Meanwhile, the stationary insulator 30 may be made of an insulating material or a dielectric material having predetermined permittivity. The stationary insulator 30 may serve to insulate a portion between the stationary terminal pin 20 and the stationary housing 10 and fix the stationary terminal pin 20 to the stationary housing 10.
That is, a stationary part through-hole 32 may be disposed at a center of the stationary insulator 30 and formed through the stationary insulator 30 in a direction perpendicular to the first and second panels B1 and B2. Among the components of the stationary terminal pin 20, the stationary pin portion 21 may completely penetrate the stationary part through-hole 32, such that a part of the stationary pin portion 21 may be exposed to the outside of the stationary housing 10.
The stationary pin portion 21 exposed to the outside of the stationary housing 10 may be coupled, by soldering, to the contact part (not illustrated) formed on the first panel B1. Further, a rim portion 31 of the other end of the stationary insulator 30, which corresponds to the first panel B1, may be caught by the stationary part resonance prevention rib 12 formed on the inner peripheral surface of the stationary housing 10 and thus fixed to be separated from the elastic member 60 without being in contact with the elastic member 60 to be described below.
The stationary part resonance prevention rib 12 formed on the inner peripheral surface of the stationary housing 10 will be described more specifically. The stationary part resonance prevention rib 12 serve to prevent the elastic member 60 from being in direct contact with the stationary insulator 20, thereby preventing resonance from occurring in the matching space 90.
Meanwhile, as illustrated in
As illustrated in
The moving terminal pin 20′ may serve to receive an electrical signal, which is transmitted from the first panel B1, through the stationary terminal pin 20 and transmit the electrical signal to the second panel B2. Alternatively, the moving terminal pin 20′ may serve to transmit an electrical signal, which is transmitted from the second panel B2, to the first panel B1 through the stationary terminal pin 20.
In this case, unlike the stationary terminal pin 20, the moving terminal pin 20′ is provided to move in a predetermined moving section to the inside or outside of the matching space 90 of the stationary housing 10 and establishes the electrical signal line while absorbing an assembling tolerance present between the first and second panels B1 and B2.
Further, the moving insulator 30′, which is provided to surround a part of the outer peripheral surface of the moving terminal pin 20′, may maintain a characteristic impedance matching design value in the matching space 90 even when the moving terminal pin 20′ moves in the moving section.
More specifically, as illustrated in
Further, a catching rim end 31′ is formed to be stepped and has a larger outer diameter than an outer rim end of the moving insulator 30′ adjacent to the second panel B2. Further, the moving insulator 30′ is also caught by the external conductor part 40′ to be described below, such that the moving insulator 30′ may be moved in the moving section together with the moving terminal pin 20′ and the external conductor part 40′ by the close-contact force of the second panel B2.
A moving through-hole 32′ is formed at a center of the moving insulator 30′ so that the moving pin portion 21′, which is one of the components of the moving terminal pin 20′, completely penetrates the moving through-hole 32′. The moving pin catching portion 23′, which has a larger outer diameter than the moving pin portion 21′ and is positioned at the boundary portion with the moving contact part 22′, may be caught by any point in the moving through-hole 32′.
The moving insulator 30′ may be designed such that the external shape and permittivity thereof maintains the characteristic impedance design value in the matching space 90 of the stationary housing 10. Further, the moving insulator 30′ may be designed to prevent a characteristic impedance mismatch in the matching space 90 even when the moving terminal pin 20′ is moved in the moving section by the close-contact force of the second panel B2 during the assembling process.
Meanwhile, as illustrated in
A part of the outer peripheral surface of the external conductor main body 41′ may have an outer diameter caught between one side catching portion 14 and the other side catching portion 16 of the inner peripheral surface of the stationary housing 10, which are formed to be close to the second panel B2. When the external conductor main body 41′ is moved in the moving section by the close-contact force of the second panel B2, the external conductor main body 41′ is caught by one side catching portion 14 and the other side catching portion 16, thereby restricting the moving section.
That is, a part of the outer peripheral surface of the external conductor main body 41′ is formed to have an outer diameter corresponding to the inner peripheral surface of the stationary housing 10, i.e., have an outer diameter corresponding to an outer diameter of the inner peripheral surface between one side catching portion 14 and the other side catching portion 16. A length of the external conductor main body 41′ having the outer diameter may be smaller than a distance between one side catching portion 14 and the other side catching portion 16, such that the moving section of the moving module M may be restricted within a range of a difference in length.
Further, the external conductor main body 41′ may have a moving part resonance prevention rib 44′ integrally formed so that an inner diameter of a part of an inner peripheral surface thereof is smaller than the other part. The moving part resonance prevention rib 44′ supports the other end of the elastic member 60 to be described below and prevents the other end of the elastic member 60 from being in direct contact with and supported on the moving insulator 30′, which makes it possible to prevent the occurrence of resonance caused by the movement in the matching space 90.
Meanwhile, the external conductor guide 42′ may extend so that the tip 43′ thereof is closer to the first panel B1 than one side catching portion 14.
Therefore, the tip 43′ of the external conductor guide 42′ is slipped on the inner peripheral surface of the stationary housing 10, which corresponds to an outer side of one side catching portion 14, by an elastic supporting force of the elastic member 60 to be described below in a state in which the other side of the external conductor main body 41′ is fixed to the other side catching portion 16 of the stationary housing 10. Therefore, the tip 43′ of the external conductor guide 42′ is prevented from being caught in the stationary housing 10, which makes it possible to prevent a malfunction.
The external conductor part 40′, together with the second panel signal leak blocking member 80, serves as a ground terminal, thereby serving to stabilize a signal flow in the matching space 90.
In particular, the external conductor part 40′ is one of the components of the moving module M and moves in conjunction with the moving terminal pin 20′ and the moving insulator 30′ that move in the moving section. Further, the external conductor part 40′ may serve to block static electricity together with the elastic member 60 provided to be in direct contact with the external conductor part 40′.
As the external conductor part 40′ and the elastic member 60 block static electricity, a degree of freedom in designing an installation position of the elastic member 60 is improved, which provides an advantageous effect of reducing an overall size in the width direction of the connector for preventing a characteristic impedance mismatch according to the present invention.
More specifically, in the case of a connector (see
A blocking member installation end 15 may be formed to be stepped on a part of the outer peripheral surface of the outer side of the stationary housing 10, which is adjacent to the second panel B2, and the cover signal leak blocking member 70 is installed on the blocking member installation end 15. Further, the second panel signal leak blocking member 80 may be installed on a tip surface of the external conductor part 40′ of the moving module M.
Meanwhile, as illustrated in
As illustrated in
The elastic member 60 is compressed to some extent in the state in which the external conductor main body 41′, which is one of the components of the external conductor part 40′, is caught by the other side catching portion 16 of the stationary housing 10. When the close-contact force is further provided by the close contact with the second panel B2, the elastic member 60 is further compressed and deformed, thereby transmitting the predetermined elastic force, which is in the form of a reaction force, to the external conductor part 40′. The external conductor part 40′, which receives the predetermined elastic force from the elastic member 50, moves the moving insulator 30′ to bring the moving insulator 30′ into close contact with the second panel B2. The moving contact part 22′ of the moving terminal pin 20′, which moves in conjunction with the moving insulator 30′, may be consistently brought into contact with the contact part of the second panel B2 by the predetermined elastic force.
In this case, as described above, it is important for the elastic member 60 to be installed to be prevented from being in direct contact with the stationary insulator 30 and the moving insulator 30′ in order to prevent the occurrence of resonance in the matching space 90.
Therefore, as illustrated in
Further, as illustrated in
For example, as illustrated in
In addition, as illustrated in
Referring to
However, referring to
According to the embodiment of the connector for preventing a characteristic impedance mismatch according to the present invention configured as described above, a mismatch in the matching space 90 required to be designed to implement the impedance matching may be prevented when a signal is transmitted along the electrical signal line established between the first and second panels B1 and B2, and an overall size in the width direction of the product may be reduced by the free design of the external conductor part 40′ and the elastic member 60, which makes it possible to manufacture the connector having a simpler structure.
Various embodiments of the connector for preventing a characteristic impedance mismatch according to the present invention have been described above in detail with reference to the accompanying drawings. However, the present invention is not necessarily limited by the embodiments, and various modifications of the embodiments and any other embodiments equivalent thereto may of course be carried out by those skilled in the art to which the present invention pertains. Accordingly, the true protection scope of the present invention should be determined by the appended claims.
The present invention provides the connector for preventing a characteristic impedance mismatch, which is capable of preventing a characteristic impedance mismatch, being manufactured to have a slimmer shape and a reduced size, and thus be disposed with high density in the communication apparatus.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10-2020-0065810 | Jun 2020 | KR | national |
| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/KR2021/006781 | Jun 2021 | US |
| Child | 18070555 | US |
