CN219534842U - Tuner for tuning resonant frequency - Google Patents
Tuner for tuning resonant frequency Download PDFInfo
- Publication number
- CN219534842U CN219534842U CN202223177243.1U CN202223177243U CN219534842U CN 219534842 U CN219534842 U CN 219534842U CN 202223177243 U CN202223177243 U CN 202223177243U CN 219534842 U CN219534842 U CN 219534842U
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- Prior art keywords
- tuner
- tuning
- disk
- bolt
- panel
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Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
- H03J1/06—Driving or adjusting arrangements; combined with other driving or adjusting arrangements, e.g. of gain control
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/207—Hollow waveguide filters
- H01P1/208—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure
- H01P1/2084—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure with dielectric resonators
Abstract
The utility model relates to a tuner for tuning a resonance frequency, said tuner comprising: a disk panel formed in a disk shape, a bolt through hole penetrating the disk panel in an up-down direction being formed at a center portion of the disk panel; a bolt portion, an external thread being formed at a part of a lower portion of the bolt portion, and the disk panel penetrating the bolt through hole and being fitted and fastened to a lower portion where the external thread is not formed; and a fastening nut portion formed on an inner circumferential surface thereof to be engaged with the external thread formed on a lower portion of the bolt portion, the fastening nut portion being fastened to the lower portion of the bolt portion, wherein the fastening nut portion is fastened to the lower portion of the bolt portion protruding lower than a lower portion of the disk panel.
Description
Technical Field
The present utility model relates to a tuner for tuning a resonance frequency, and more particularly, to a tuner for fine tuning a resonance frequency of a dielectric resonator, which is manufactured to be easy to assemble and to be capable of maintaining a stable coupled state after assembly.
Background
A Band Pass Filter (Band Pass Filter) used in a mobile communication system mainly uses a Cavity (Cavity) Filter using a conductor or a dielectric resonator Filter using a dielectric resonator (Dielectric Resonator) having a large relative permittivity (relative dielectric constant).
Among them, since the dielectric resonator Filter has a high dielectric constant, most of the electromagnetic field is trapped in the dielectric, the conductor loss of the dielectric resonator Filter is very small, and thus, a higher Q value (Quality Factor) than that of the Cavity Filter (Cavity Filter) can be obtained, and since the dielectric resonator has high temperature stability, a Filter having temperature stability characteristics can be manufactured.
Examples of such dielectric resonator filters are well shown in the prior art of korean patent No. 10-1357027, which will be described with reference to fig. 1 to 3.
In the conventional dielectric resonator filter 1, disc-shaped dielectric resonators 12 are fixedly mounted to the inner centers of cavities 11 of a conductor housing 10 by other dielectric brackets 13, respectively, the cavities 11 are partitioned by a partition 21 formed with windows 20 of a predetermined size so as to continuously form coupling between the dielectric resonators 12, and coupling screws 15 are mounted to the windows 20 by covers 16 so as to finely tune the amount of coupling.
In addition, a tuning slot may be formed at the upper end of the dielectric resonator 12, and a bolt-type tuner 14 and a fixing nut 17 are mounted together to a cover 16 at a position corresponding to the tuning slot so as to reduce an insertion loss by finely tuning a resonance frequency.
Also, an input connector 18 for inputting frequencies from the outside and an output connector 19 for outputting internal filter frequencies are installed at both sides of the conductor housing 10, the input connector 18 being connected to an input feed circuit, the output connector 19 being connected to an output feed circuit for transmitting signals from the input connector 18 to the first dielectric resonator 12-1, the output feed circuit for transmitting signals from the last dielectric resonator 12-4 to the output connector 19.
As shown in fig. 3, the tuner 14 includes: a bolt portion 14-a inserted and fitted into a fixing nut 17 provided on the cover 16; a groove portion 14-C formed at an upper end of the bolt portion 14-A; and a disk 14-B formed at the lower end of the bolt portion 14-a.
Thus, after the tuner 14 is mounted to the cover 16, the groove portion 14-C is rotated using a screwdriver to tune the insertion depth of the disk 14-B, so that a desired resonance frequency characteristic can be obtained.
However, since such a bolt portion 14-a is formed of a synthetic resin material and the disk 14-B is formed of a capacitor conductor, the disk 14-B is bonded to the lower end of the bolt portion 14-a by adhesion, however, since the bolt portion 14-a is different from the disk 14-B in material, separation is easy and defects are likely to occur, and there is a drawback of low production yield.
Further, since a separate fixing member for fixing the bolt portion 14-a is lacking, there is also a problem in that the insertion depth of the set disk 14-B is changed due to arbitrary rotation of the bolt portion 14-a.
Prior art literature
Patent literature
(patent document 1) korean patent No. 10-1357027 (23 th of 2014, 01 month)
Disclosure of Invention
Technical problem
The present utility model has been made to solve the above-mentioned problems, and an object thereof is to provide a tuner for tuning a resonance frequency configured to prevent a disk panel from arbitrarily moving inside a cavity so as not to change after finely tuning the resonance frequency of a dielectric resonator filter.
The technical problems of the present utility model are not limited to the above technical problems, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.
Technical solution
In a tuner for tuning a resonance frequency for finely tuning a resonance frequency of a dielectric resonator filter according to an embodiment of the present utility model, the tuner includes: a disk panel formed in a disk shape, a bolt through hole penetrating the disk panel in an up-down direction being formed at a center portion of the disk panel; a bolt portion, an external thread being formed at a part of a lower portion of the bolt portion, and the disk panel penetrating the bolt through hole and being fitted and fastened to a lower portion where the external thread is not formed; and a fastening nut portion formed on an inner circumferential surface thereof to be engaged with the external thread formed on a lower portion of the bolt portion, the fastening nut portion being fastened to the lower portion of the bolt portion, wherein the fastening nut portion is fastened to the lower portion of the bolt portion protruding lower than a lower portion of the disk panel.
Wherein the bolt portion may be formed with a fixing flange along an outer circumferential surface, the fixing flange being closely fitted to an upper surface of the disk panel by a fastening force provided when the fastening nut portion is fastened.
And, the fixing flange may be integrally formed on an outer circumferential surface of the lower portion defining the bolt portion.
And, the fixing flange may be formed to have a circular horizontal section or a polygonal horizontal section excluding the circular horizontal section.
And, the fixing flange may be formed to have a hexagonal or regular hexagonal horizontal section.
The tuner may further include a disk play prevention portion that is formed on a surface of the disk panel to prevent the disk panel from moving arbitrarily.
The disk play prevention unit may include: and a seating groove part formed by cutting down an upper surface of the disk panel by a female process, a fixing flange formed at an outer circumferential surface of the bolt part in a space between an upper part of the disk panel and the filter cover being seated and engaged to the seating groove part.
And, the seating groove part may be formed in a shape corresponding to a shape of a horizontal section of the fixing flange, and be embossed such that a height of an upper surface of the fixing flange is equal to or higher than a height of an upper surface of the disk panel when the fixing flange is fully seated in the seating groove part.
And, the seating groove portion and the fixing flange may be formed in a shape having a polygonal horizontal section other than a circular horizontal section.
And, the polygonal horizontal section may have a shape including a hexagon or a regular hexagon.
The disk play prevention unit may include: an adhesive receiving groove portion in which an adhesive member, which is formed by cutting up a lower portion of the disk panel by a female process, is received in a state in which a fixing flange formed at an outer circumferential surface of a space between an upper portion of the disk panel and the filter cover of the bolt portion is in contact with the disk panel, and which regulates adhesion between the disk panel and the fastening nut portion.
Also, the adhesive receiving groove portion may be formed in a shape in which an inner upper portion and an outer upper portion of an outer end of the fastening nut portion are connected to each other.
And, the adhesive member put into the adhesive receiving groove portion may include an epoxy adhesive.
The disk play prevention unit may include: and a nut rotation preventing protrusion formed at a lower portion of the disc panel and protruding downward from the lower portion of the disc panel by a predetermined length to prevent the fastening nut portion from being arbitrarily rotated with respect to the bolt portion.
And, the nut rotation preventing protrusions may be formed by adhesive curing after being applied to the lower portion of the disc panel or by being integrally embossed with the disc panel to protrude toward the lower portion of the disc panel.
The nut rotation preventing protrusion may be disposed so as to be located within a radius of gyration of an outer end of any one of the hexagonal nuts when the fastening nut portion is provided as the hexagonal nut.
Advantageous effects
A tuner for tuning a resonance frequency according to an embodiment of the present utility model has an effect that by preventing arbitrary play of a disk panel coupled with a bolt portion, errors after tuning a frequency in a cavity can be prevented in advance, and thus deterioration of product performance can be prevented.
Drawings
Fig. 1 and 2 are exemplary diagrams showing one example of a dielectric resonator filter according to the related art.
Fig. 3 is a perspective view showing one example of the bolt portion provided in fig. 1 and 2.
Fig. 4 is a perspective view showing a tuner for tuning a resonance frequency according to a first embodiment of the present utility model.
Fig. 5 is a front view of fig. 4.
Fig. 6 is a sectional view taken along line A-A of fig. 5.
Fig. 7 is a cut-away perspective view taken along line A-A of fig. 5, and is a cut-away perspective view of parts (a) and (b) of fig. 4, respectively.
Fig. 8 is an exploded perspective view of fig. 4.
Fig. 9 is a perspective view showing a tuner for tuning a resonance frequency according to a second embodiment of the present utility model.
Fig. 10 is a sectional view taken along line B-B of fig. 9.
Fig. 11 is a cut-away perspective view taken along line B-B and line C-C of fig. 9.
Fig. 12 is an exploded perspective view of fig. 9.
Fig. 13 is a perspective view showing a tuner for tuning a resonance frequency according to a third embodiment of the present utility model.
Fig. 14 is a sectional view taken along line D-D of fig. 13.
Fig. 15 is a cut-away perspective view taken along line D-D and line E-E of fig. 13.
Fig. 16 is an exploded perspective view of fig. 13.
Reference numerals illustrate:
10: a conductor housing; 11: a cavity; 12: a dielectric resonator; 13: a media support; 15: a coupling screw; 16: a cover (filter cover); 17; a fixing nut; 18: an input connector; 19: an output connector; 100A, 100B, 100C: a tuner; 110: a disk panel; 111: a bolt through hole; 120: a bolt portion; 123: a tuning slot; 125: a fixing flange; 130: a fastening nut portion; 131: a bolt fastening hole; 140: a disk play prevention unit; 140A: a placement groove portion; 140B: an adhesive accommodating groove portion; 140C: preventing the nut from rotating the protrusion.
Detailed Description
Hereinafter, a tuner for tuning a resonance frequency according to an embodiment of the present utility model will be described in detail with reference to the accompanying drawings.
It is to be noted that when reference numerals are added to components of the respective drawings, the same reference numerals are used as much as possible for the same components even if they are indicated on different drawings. In addition, in describing the embodiments of the present utility model, if a detailed description of related well-known structures or functions is considered to interfere with understanding of the embodiments of the present utility model, a detailed description thereof will be omitted.
In describing components of embodiments of the present utility model, terms such as first, second, A, B, (a), (b), and the like may be used. These terms are only used to distinguish one element from another element, the nature, order, or sequence of which is not limited by these terms. Furthermore, unless defined otherwise, 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 utility model belongs. Terms such as the same as those defined in the conventional dictionary should be interpreted to have meanings consistent with meanings in the background of the related art, and should not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Embodiments 100A, 100B, and 100C of a tuner for tuning a resonance frequency according to the present utility model relate to an assembly of a dielectric resonator filter, which is made of a dielectric material and is provided on a filter cover (see reference numeral "16" in fig. 1 and 2) configured to cover a cavity (see reference numeral "11" in fig. 1 and 2) inside a conductor housing (see reference numeral "10" in fig. 1 and 2) coated with a metal material (conductor material), and can secure a desired resonance frequency characteristic by adjusting a separation distance (insertion depth) from a dielectric resonator (see reference numeral "12" in fig. 1 and 2) installed in the cavity 11.
In particular, embodiments 100A, 100B, and 100C of a tuner for tuning a resonant frequency according to the present utility model include: a disk panel 110 configured to be operable by an operator who performs frequency fine tuning to move linearly between the filter cover 16 and the dielectric resonator 12 in the cavity 11; a bolt portion 120 coupling the disk panel 110 to a lower portion of the filter cover 16 and linearly moving the disk panel 110 in the cavity 11; and a fastening nut portion 130 for fixing the disk panel 110 to the bolt portion 120.
Hereinafter, an embodiment of a tuner for tuning a resonance frequency according to the present utility model will be described in detail, wherein a detailed description will be focused on the first embodiment 100A, and in describing the second embodiment 100B and the third embodiment 100C, description of the repetitive portion that has been described in the first embodiment 100A will be omitted and only features different from the first embodiment 100A will be described.
Fig. 4 is a perspective view showing a tuner for tuning a resonance frequency according to a first embodiment of the present utility model, fig. 5 is a front view of fig. 4, fig. 6 is a sectional view taken along a line A-A of fig. 5, fig. 7 is a cut-away perspective view taken along a line A-A of fig. 5, and fig. 8 is an exploded perspective view of fig. 4, respectively.
As shown in fig. 4 to 8, a tuner 100A for tuning a resonance frequency according to a first embodiment of the present utility model includes: a disk panel 110; a bolt portion 120, the disk panel 110 being fixed to a lower portion 121 of the bolt portion 120; and a fastening nut portion 130 for fixing the disk panel 110 to the bolt portion 120.
The disk panel 110 is essentially a conductor panel provided for fine frequency tuning in the cavity 11 of the conductor housing 10 of the dielectric resonator filter.
Such a disk panel 110 is preferably formed in a disk shape so as to form a stable electric field in the cavity 11. The bolt through hole 111 may be formed to pass through a central portion of the disk panel 110 in the up-down direction, and the bolt portion 120 may pass through the bolt through hole 111.
The bolt portion 120 is formed of a nonconductive material, and may be formed in a cylindrical shape elongated in the up-down direction. The bolt portion 120 is not physically divided into an upper portion and a lower portion, however, hereinafter, for convenience of description, an upper portion fixed to the fixing nut 17 of the filter cover 16 is defined as an "upper portion", a lower portion for mounting the disk panel 110 is defined as a "lower portion", and particularly, a "lower portion 121" may be defined to refer to a fixing flange 125 to be described later closely attached to an upper surface of the disk panel 110 and an entire lower portion thereof.
On the upper surface where the upper end of the bolt portion 120 is formed, the tuning groove 123 may be formed to a predetermined depth so that the bolt portion 120 is turned by a tuning tool (not shown) such as a screwdriver in a state where the bolt portion 120 is fixed to the fixing nut 17 to perform fine tuning of the frequency.
Also, the fixing flange 125 may be formed at a boundary with the upper portion defined as the lower portion 121 along the outer circumferential surface of the bolt portion 120. The fixing flange 125 may be closely attached to the upper surface of the disc panel 110 by a fastening force provided when fastening a fastening nut portion 130 to be described later to fix the bolt portion 120 of the disc panel 110 to prevent the disc panel 110 from arbitrarily swimming.
Such a fixing flange 125 may be integrally formed on the outer circumferential surface of the lower portion 121 defining the bolt portion 120. Wherein the fixing flange 125 may be formed to have a circular horizontal section or a polygonal horizontal section excluding the circular horizontal section.
For reference, as shown in the embodiments of the disk play prevention parts 140 of the second and third embodiments 100B and 100C described later, the fixing flange 125 may also have a circular horizontal cross section when not directly associated with the disk play prevention parts 140.
However, as shown in the embodiment of the disk play prevention section 140 of the first embodiment 100A described later, when there is a direct association with the disk play prevention section 140, the fixing flange 125 must have a polygonal horizontal section excluding a circular horizontal section. In this case, the fixing flange 125 may be formed to have a hexagonal or regular hexagonal horizontal section.
On the other hand, although not shown in the drawings, an external thread (not shown) for tightening a tightening nut 130 described later may be formed on a part of the outer peripheral surface of the lower portion 121 of the bolt portion 120. Here, the external screw thread may be formed such that the fastening nut part 130 is closely adhered to and fixed to the disk panel 110 when rotated clockwise in a state in which the fastening nut part 130 is inserted into the lower part of the bolt part 120, and the fastening nut part 130 is moved in a direction to separate from the bolt part 120 when rotated counterclockwise. Further, the external screw thread may be formed at the whole of the lower portion 121 of the bolt portion 120, but preferably, the external screw thread may be formed only at a portion where the fastening nut portion 130 provides the fastening force to the disk panel 110.
The fastening nut portion 130 is formed as a regular hexagonal or regular hexagonal nut, a bolt fastening hole 131 is formed through the center in the up-down direction so that the bolt portion 120 passes therethrough, and an internal thread (not shown) that coincides with the external thread formed at the lower portion 121 of the bolt portion 120 is formed on the inner circumferential surface of the fastening nut portion 130.
The fastening nut 130 as described above is fitted around the outer circumferential surface of the bolt 120 through the lower portion of the bolt 120, and then the female screw is fastened to the male screw of the bolt 120 formed in the right screw direction by using a fastening tool (not shown) such as a hexagonal wrench, so that the disk panel 110 can be firmly fixed to the bolt 120.
More specifically, first, the lower portion of the bolt portion 120 is positioned to pass through the bolt through hole 111 of the disk panel 110, then, the fastening nut portion 130 is fastened temporarily by the lower portion of the bolt portion 120, and then, the fastening nut portion 130 is fastened in the clockwise direction by a fastening tool such as a hexagonal wrench, at which time the fastening nut portion 130 moves upward along the external thread of the bolt portion 120 so that the upper surface of the disk panel 110 closely fits the fixing flange 125. When the disk panel 110 is separated from the bolt portion 120, the operations may be performed in the reverse order of the above-described order.
Wherein, as shown in fig. 5 and 6, the fastening nut part 130 may be fastened to the lower part 121 of the bolt part 120 protruding downward from the lower part of the disc panel 110. When compared with the prior art described in the "background art", the disk panel 14-3 of the prior art is characterized in that the lower portion thereof is formed to be flat in the left-right horizontal direction in consideration of stability when an electric field is formed in the cavity 11, whereas in the embodiments 100A, 100B and 100C of the present utility model, a part (lower portion) of the bolt portion 120 or the fastening nut portion 130 is provided in the lower portion of the disk panel 110 in consideration of that the fixation of the disk panel 110 in the cavity 11 becomes a larger variable of stability when an electric field is formed in the cavity 11, and the disk play prevention portion 140 described later is further designed.
That is, the embodiments 100A, 100B, and 100C of the tuner for tuning a resonance frequency according to the present utility model may further include the disk play preventing parts 140, 140A, 140B, and 140C processed to the surface of the disk panel 110 to prevent any play of the disk panel 110.
In the tuner for tuning a resonance frequency of the first embodiment 100A, as shown in fig. 4 to 8, the disc play prevention part 140 may include seating groove parts 140A formed on the outer circumferential surfaces of the bolt parts 120 located in the space between the filter covers 16 of the upper part of the disc panel 110, and the upper surface of the disc panel 110 is cut down to be formed by embossing so that the fixing flange 125 is seated and engaged.
Wherein the seating groove part 140A may be formed in a shape corresponding to the horizontal sectional shape of the fixing flange 125, the fixing flange 125 is formed to have a polygonal (preferably, hexagonal or regular hexagonal other than circular) horizontal section. Preferably, the seating groove part 140A may be formed to have a size such that at least a lower portion of the fixing flange 125 is inserted and seated.
In addition, the seating groove part 140A may be formed by a female process such that an upper surface of the fixing flange 125 is level with or higher than an upper surface of the disk panel when the fixing flange 125 is completely seated to the seating groove part 140A.
As described above, when the fixing flange 125 of the bolt portion 120 is inserted and seated in the seating groove portion 140A formed at the upper surface of the disk panel 110, the disk panel 110 can be prevented from arbitrarily moving without the bolt portion 120 being turned by a tool such as a tuner.
Fig. 9 is a perspective view showing a tuner for tuning a resonance frequency according to a second embodiment of the present utility model, fig. 10 is a sectional view taken along a line B-B of fig. 9, fig. 11 is a sectional perspective view taken along the line B-B and a line C-C of fig. 9, and fig. 12 is an exploded perspective view of fig. 9.
In the tuner for tuning a resonance frequency of the second embodiment 100B, as shown in fig. 9 to 12, the disc play prevention part 140 may include an adhesive receiving groove part 140B formed on the outer circumferential surface of the bolt part 120 of the space between the filter covers 16 located at the upper part of the disc panel 110, and the lower part of the disc panel 110 is cut upward to be formed by an embossing process so that an adhesive member 145 adjusting the adhesion between the disc panel 110 and the fastening nut part 130 is received therein in a state where the fixing flange 125 and the disc panel 110 are in contact with each other.
Wherein, unlike the seating groove portion 140A as the disc play preventing portion 140 of the first embodiment 100A, the adhesive receiving groove portion 140B only needs to receive the adhesive member 145 to fix the upper disc panel 110 and the lower fastening nut portion 130, and thus does not have to have a size corresponding to the fixing flange 125 or a size suitable to be inserted and seated in the fixing flange 125.
More specifically, the adhesive receiving groove portion 140B may be female-processed into a shape in which an inner upper portion and an outer upper portion of the outer end of the fastening nut portion 130 are connected to each other. The adhesive member 145 may be put in through the exposed portion of the adhesive receiving groove portion 140B and cured to fix the lower fastening nut portion 130 with the upper disc panel 110. Wherein the adhesive member 145 may include an epoxy adhesive.
As described above, when the adhesive member 145 serving as an epoxy adhesive is put into the adhesive accommodating groove portion 140B formed on the upper surface of the disc panel 110 and cured, the disc panel 110 and the fastening nut portion 130 are attached to each other, and therefore, unless the bolt portion 120 is turned by a tuning tool or the like, the disc panel 110 can be prevented from arbitrarily swimming, and the fastening nut portion 130 can be prevented from arbitrarily becoming loose.
Fig. 13 is a perspective view showing a tuner for tuning a resonance frequency according to a third embodiment of the present utility model, fig. 14 is a sectional view taken along a line D-D of fig. 13, fig. 15 is a sectional perspective view taken along the line D-D and a line E-E of fig. 13, and fig. 16 is an exploded perspective view of fig. 13.
In the tuner for tuning a resonance frequency according to the third embodiment 100C, as shown in fig. 13 to 16, the disc play preventing part 140 may include a nut rotation preventing protrusion 140C formed at a lower portion of the disc panel 110 and protruding downward from the lower portion of the disc panel 110 by a predetermined length to prevent the fastening nut part 130 from rotating arbitrarily with respect to the bolt part 120.
The nut rotation preventing protrusions 140C may be formed by adhesive curing after being applied to the lower portion of the disc panel 110 or by being integrally embossed with the disc panel 110 to protrude toward the lower portion of the disc panel 110.
The nut rotation preventing protrusions 140C as described above are positioned to interfere with the fastening nut portion 130 fastened to the lower portion 121 of the bolt portion 120, thereby preventing any play of the fastening nut portion 130, and it is possible to prevent the disc panel 110 from being moved due to the fastening nut portion 130 from being closely attached to the fixing flange 125 side.
Wherein the nut rotation preventing protrusions are for preventing the fastening nut portion 130 from becoming loose due to any play, the nut rotation preventing protrusions may be disposed to be located within a radius of gyration of an outer end of any one of the hexagonal nuts when the fastening nut portion 130 is configured as a common hexagonal nut.
The tuners 100A, 100B, and 100C for tuning a resonance frequency according to the embodiment of the present utility model are different from the tuners for tuning a resonance frequency in the "related art" described in the "background art" section in that they are formed as one body by insert injection molding, that is, when the respective components (the disk panel 110, the bolt portion 120, and the fastening nut portion 130) are separately manufactured and assembled to the filter cover 16 by using the fixing nut 17, the disk play preventing portion 140 is additionally configured to prevent the disk panel 110 from moving within the cavity 11, and thus it is possible to produce the same error preventing effect as in the case of the one body manufacturing.
A tuner for tuning a resonance frequency according to an embodiment of the present utility model is described in detail above with reference to the accompanying drawings. However, the embodiments of the present utility model are not necessarily limited to the above-described embodiments, and various modifications and implementations may be made within the scope and range of equivalents as will be apparent to those skilled in the art to which the present utility model pertains. Accordingly, the actual scope of the utility model is to be defined in the following claims.
Claims (16)
1. A tuner for tuning a resonance frequency, characterized in that,
the tuner includes:
a disk panel formed in a disk shape, a bolt through hole penetrating the disk panel in an up-down direction being formed at a center portion of the disk panel;
a bolt portion, an external thread being formed on a part of a lower portion of the bolt portion, and the disk panel penetrating the bolt through hole and being fitted and fastened to a lower portion where the external thread is not formed; and
a fastening nut portion formed on an inner circumferential surface thereof in engagement with the external thread formed on a lower portion of the bolt portion, the fastening nut portion being fastened to the lower portion of the bolt portion,
the fastening nut portion is fastened to a lower portion of the bolt portion protruding lower than a lower portion of the disk panel.
2. A tuner for tuning a resonant frequency as recited in claim 1, wherein,
the bolt portion is formed with a fixing flange along an outer peripheral surface,
the fixing flange is closely contacted with the upper surface of the disc panel by a fastening force provided when the fastening nut portion is fastened.
3. A tuner for tuning a resonant frequency as recited in claim 2, wherein,
the fixing flange is integrally formed on an outer peripheral surface of the lower portion defining the bolt portion.
4. A tuner for tuning a resonant frequency as recited in claim 2, wherein,
the fixing flange is formed to have a circular horizontal section or a polygonal horizontal section excluding the circular horizontal section.
5. A tuner for tuning a resonant frequency as recited in claim 4, wherein,
the fixing flange is formed to have a hexagonal or regular hexagonal horizontal section.
6. A tuner for tuning a resonant frequency as recited in claim 1, wherein,
the tuner further comprises:
and a disk play preventing part which is processed on the surface of the disk panel and is used for preventing the disk panel from moving randomly.
7. The tuner for tuning a resonant frequency of claim 6, wherein,
the disk play prevention section includes:
and a seating groove part formed by cutting down an upper surface of the disk panel by a female process, a fixing flange formed at an outer circumferential surface of the bolt part in a space between an upper part of the disk panel and the filter cover being seated and engaged to the seating groove part.
8. The tuner for tuning a resonant frequency of claim 7, wherein,
the seating groove part is formed in a shape corresponding to a shape of a horizontal section of the fixing flange, and is embossed such that a height of an upper surface of the fixing flange is equal to or higher than a height of an upper surface of the disk panel when the fixing flange is fully seated in the seating groove part.
9. Tuner for tuning resonant frequencies according to claim 7 or 8, characterized in that,
the seating groove portion and the fixing flange are formed in a shape having a polygonal horizontal section other than a circular horizontal section.
10. The tuner for tuning a resonant frequency of claim 9, wherein,
the polygonal horizontal cross-section includes a hexagonal shape or a regular hexagonal shape.
11. The tuner for tuning a resonant frequency of claim 6, wherein,
the disk play prevention section includes:
an adhesive receiving groove portion in which an adhesive member, which is formed by cutting up a lower portion of the disk panel by a female process, is received in a state in which a fixing flange formed at an outer circumferential surface of a space between an upper portion of the disk panel and the filter cover of the bolt portion is in contact with the disk panel, and which regulates adhesion between the disk panel and the fastening nut portion.
12. The tuner for tuning a resonant frequency of claim 11, wherein,
the adhesive receiving groove portion is formed in a shape in which an inner upper portion and an outer upper portion of an outer end of the fastening nut portion are connected to each other.
13. The tuner for tuning a resonant frequency of claim 11, wherein,
the adhesive member placed in the adhesive receiving groove portion includes an epoxy adhesive.
14. The tuner for tuning a resonant frequency of claim 6, wherein,
the disk play prevention section includes:
a nut rotation preventing protrusion is formed at a lower portion of the disk panel and protrudes downward from the lower portion of the disk panel by a predetermined length to prevent the fastening nut portion from being arbitrarily rotated with respect to the bolt portion.
15. The tuner for tuning a resonant frequency of claim 14, wherein,
the nut rotation preventing protrusions are formed by bonding and curing after being applied to the lower portion of the disk panel, or by being integrally embossed with the disk panel to protrude toward the lower portion of the disk panel.
16. The tuner for tuning a resonant frequency of claim 14, wherein,
the nut rotation preventing protrusion is configured to be located within a radius of gyration of an outer end of any one of the hexagonal nuts when the fastening nut portion is provided as the hexagonal nut.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020210169252A KR20230081318A (en) | 2021-11-30 | 2021-11-30 | Tuner to tune the resonant frequency |
| KR10-2021-0169252 | 2021-11-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219534842U true CN219534842U (en) | 2023-08-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223177243.1U Active CN219534842U (en) | 2021-11-30 | 2022-11-29 | Tuner for tuning resonant frequency |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR20230081318A (en) |
| CN (1) | CN219534842U (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101357027B1 (en) | 2013-01-10 | 2014-02-04 | 세원텔레텍 주식회사 | Dual mode rf filter using the reentrant cavity dielectric resonator |
-
2021
- 2021-11-30 KR KR1020210169252A patent/KR20230081318A/en not_active Application Discontinuation
-
2022
- 2022-11-29 CN CN202223177243.1U patent/CN219534842U/en active Active
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| Publication number | Publication date |
|---|---|
| KR20230081318A (en) | 2023-06-07 |
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