CN212991269U - Filter - Google Patents
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- CN212991269U CN212991269U CN202022176204.4U CN202022176204U CN212991269U CN 212991269 U CN212991269 U CN 212991269U CN 202022176204 U CN202022176204 U CN 202022176204U CN 212991269 U CN212991269 U CN 212991269U
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Abstract
The utility model is suitable for a wave filter technical field provides a wave filter, include: the shell is provided with at least two resonant cavities, and the shell is provided with a mounting hole and a channel for communicating the mounting hole with one resonant cavity; the resonator is correspondingly arranged in the resonant cavity; the connector assembly comprises a connector, a connecting rod, a connecting sheet and an insulating positioning piece; one end of a connecting rod is connected with the connector, the other end of the connecting rod is connected with a connecting sheet and an insulating positioning piece, the connecting rod is arranged in the mounting hole, the insulating positioning piece is arranged in the channel, and the connecting sheet is electrically connected with a resonator; the middle position of the insulating positioning piece is provided with a positioning groove, and the connecting piece is arranged in the positioning groove. The utility model provides a wave filter is through setting up insulating setting element to set up the constant head tank at the intermediate position of insulating setting element, the connection piece is installed in the constant head tank, has both guaranteed connection piece simple to operate, ensures again that the intermediate position of connection piece fixing in the passageway, makes product property ability reliable and stable, and the uniformity is good, improves production efficiency.
Description
Technical Field
The utility model relates to a wave filter technical field, concretely relates to wave filter.
Background
The filter is an important component in communication equipment, and as a typical frequency selection device, the filter can effectively suppress unwanted signals and plays roles in selecting signals, attenuating noise, filtering interference and the like. With the continuous development of filters, it is important to simplify and facilitate the installation and production operations of connectors of filters.
In the prior art, a connector of a filter is usually installed in a mounting hole of a housing, the mounting hole is communicated with a resonant cavity through a channel, the connector is connected with a connecting sheet through a connecting rod, and the connecting sheet is installed in the channel and is electrically connected with a resonator in the resonant cavity through a copper wire, so that the connector and the resonator transmit signals. In order to reduce the short circuit risk of connection piece and passageway lateral wall, generally need install the connection piece in the intermediate position of passageway, but connection piece direct mount hardly ensures that the connection piece is installed in the intermediate position of passageway, is difficult to guarantee after the connection piece installation that the lateral wall interval of connection piece and passageway both sides is unanimous, has the short circuit risk easily, and causes the index uniformity poor, and production rework volume is big, leads to production efficiency to hang down.
SUMMERY OF THE UTILITY MODEL
The utility model provides a wave filter aims at solving prior art's wave filter's connection piece and installs the lateral wall interval that is difficult to guarantee connection piece and passageway both sides behind the passageway unanimous, has the short circuit risk easily, and easily causes the index uniformity poor, and production reworking volume is big, leads to the problem that production efficiency is low.
The utility model discloses a realize like this, provide a wave filter, include:
the device comprises a shell provided with at least two resonant cavities, wherein the shell is provided with a mounting hole and a channel for communicating the mounting hole with one resonant cavity;
the resonator is correspondingly arranged in the resonant cavity; and
the connector assembly comprises a connector, a connecting rod, a connecting sheet and an insulating positioning piece; one end of the connecting rod is connected with the connector, the other end of the connecting rod is connected with the connecting sheet and the insulating positioning piece, the connecting rod is installed in the installation hole, the insulating positioning piece is matched with the channel and installed in the channel, and the connecting sheet is electrically connected with the resonator; the middle position of the insulating positioning piece is provided with a positioning groove, and the connecting piece is arranged in the positioning groove so as to be positioned in the middle position of the channel.
Preferably, the insulating positioning piece is provided with a via hole, the connecting sheet is provided with a connecting hole, and one end of the connecting rod simultaneously penetrates through the via hole in the insulating positioning piece and the connecting hole in the connecting sheet.
Preferably, one end of the insulating positioning piece close to the resonant cavity is flush with or opposite to the side walls on two sides of the channel, and the connecting piece is close to one end of the resonant cavity and opposite to the insulating positioning piece.
Preferably, the insulating spacer includes:
the first supporting part is mounted in the mounting hole, and the through hole penetrates through the first supporting part;
with first supporting part integrated into one piece's second supporting part, the constant head tank certainly the one end of second supporting part to first supporting part direction distributes, the constant head tank with the via hole intercommunication, the second supporting part install in the passageway and with the lateral wall tight fit of passageway both sides.
Preferably, the connector assembly further comprises:
the connector is arranged at one end of the pressure riveting column, and one end of the connecting rod extends into the inner hole and is connected with the connector.
Preferably, the rivet pressing column includes:
a main body portion;
the matching end is connected with the main body part and is matched with the aperture of the mounting hole; and
and the outer diameter of the lengthened end is smaller than the diameter of the matching end.
Preferably, the squeeze riveting column further comprises a positioning ring which is arranged between the main body part and the matching end and is convex relative to the periphery of the matching end, and the outer diameter of the positioning ring is larger than the inner diameter of the mounting hole.
Preferably, the end of the lengthened end is provided with a chamfer.
The utility model provides a wave filter is through setting up insulating setting element, the intermediate position of insulating setting element is provided with the constant head tank, the connection piece is installed in the constant head tank, insulating setting element installs behind the passageway like this, can make the connection piece be located the intermediate position of passageway, can fix the intermediate position in the passageway with the connection piece very easily, make the connection piece unanimous with the lateral wall interval of passageway both sides, effectively avoid the short circuit risk, and the index uniformity is good, and connection piece simple to operate has both been guaranteed, the mounted position of connection piece has been guaranteed again, make the product property ability reliable and stable, the uniformity is good, and the machining efficiency is improved.
Drawings
Fig. 1 is a schematic structural diagram of a filter provided by an embodiment of the present invention after a cover plate is removed;
fig. 2 is an exploded view of the filter according to the embodiment of the present invention with the cover plate removed;
fig. 3 is a schematic structural diagram of a housing of a filter according to an embodiment of the present invention;
fig. 4 is a perspective structural view of a connector assembly of a filter according to an embodiment of the present invention;
fig. 5 is an exploded perspective view of a connector assembly of a filter according to an embodiment of the present invention;
fig. 6 is a three-dimensional structure diagram of an insulating positioning element of a filter according to an embodiment of the present invention;
fig. 7 is a schematic top view of the filter according to the embodiment of the present invention after the cover plate is removed;
fig. 8 is a schematic sectional view along the direction a-a in fig. 7.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment of the utility model provides a wave filter is through setting up insulating setting element, intermediate position at insulating setting element sets up the constant head tank, and install the connection piece in the constant head tank, install after the passageway at insulating setting element like this, can make the connection piece be located the intermediate position of passageway, can fix the intermediate position in the passageway with the connection piece very easily, make the lateral wall interval of connection piece and passageway both sides unanimous, effectively avoid the short circuit risk, and it is good to cause the index uniformity, connection piece simple to operate has both been guaranteed, the mounted position of connection piece has been guaranteed again, it can be reliable and stable to make product property, the uniformity is good.
Referring to fig. 1 to 6, an embodiment of the present invention provides a filter, including:
the device comprises a shell 1 provided with at least two resonant cavities 11, wherein the shell 1 is provided with a mounting hole 12 and a channel 13 for communicating the mounting hole 12 with one resonant cavity 11;
the resonator 2 is correspondingly arranged in the resonant cavity 11; and
the connector assembly 3, the connector assembly 3 includes the connector 31, tie rod 32, connection lug 33 and insulating locating element 34; one end of the connecting rod 32 is connected with the connector 31, the other end of the connecting rod is connected with the connecting sheet 33 and the insulating positioning piece 34, the connecting rod 32 is installed in the installation hole 12, the insulating positioning piece 34 is matched with the channel 13 and installed in the channel 13, and the connecting sheet 33 is electrically connected with a resonator 2; the insulating positioning member 34 is provided with a positioning groove 340 at a middle position, and the connecting piece 33 is mounted in the positioning groove 340 such that the connecting piece 33 is located at a middle position of the channel 13.
In the embodiment of the present invention, the number of the resonators 2 is the same as the number of the resonators 11, and the specific numbers of the resonators 11 and the resonators 2 are not limited. One resonator 2 is correspondingly arranged in each resonant cavity 11, and adjacent resonant cavities 11 are coupled through windows.
In the embodiment of the present invention, the filter further includes a cover plate (not shown) covering the housing 1 to seal the housing 1.
In the embodiment of the present invention, the mounting hole 12 is a circular hole, and the channel 13 is disposed on one side of the mounting hole 12 and is connected to a resonant cavity 11.
The embodiment of the utility model provides an in, connecting rod 32 one end is connected with connector 31 and insulating positioning element 34, and the other end is connected with connection piece 33, and connecting rod 32 transmits the signal transmission of connector 31 input to connection piece 33, and rethread connection piece 33 transmits syntonizer 2.
As an embodiment of the present invention, the filter further includes a conductive member 5, one end of the conductive member 5 is connected to the resonator 2, and the other end of the conductive member 5 is welded to the connection pad 33. Wherein, the conductive piece 5 is a copper wire.
In this embodiment, the specific shape of the copper wire is not limited. When the connector assembly 3 is integrally mounted to the housing 1, one end of the conductive member 5 is welded to the resonator 2, and the other end of the conductive member 5 is welded to the connection pad 33, so that stable electrical connection between the connection pad 33 and the resonator 2 is achieved.
In the embodiment of the present invention, the insulating positioning member 34 is made of an insulating material to realize the insulating isolation between the connecting sheet 33 and the side walls of both sides of the channel 13. The shape and size of the positioning groove 340 is matched with the shape and size of the connecting piece 33, so that when the connecting piece 33 is installed in the positioning groove 340, the connecting piece 33 can be stably fixed in the positioning groove 340, and the connecting piece 33 has good position accuracy.
Referring to fig. 7-8, in the embodiment of the present invention, the positioning groove 340 is disposed at the middle position of the insulating positioning member 34, and the connecting sheet 33 is installed at the positioning groove 340, when the insulating positioning member 34 is installed at the channel 13, the connecting sheet 33 is located at the middle position of the channel 13, so that the connecting sheet 33 can be easily fixed at the middle position of the channel 13, which ensures that the connecting sheet 33 is installed conveniently, and ensures that the connecting sheet 33 is located at the middle position of the channel 13, thereby ensuring that the product performance is reliable and stable, and the consistency is good, and improving the processing efficiency.
In the embodiment of the present invention, when the insulating positioning element 34 is installed in the channel 13, the positioning groove 340 is distributed along the line direction between the center of the resonant cavity 11 and the center of the mounting hole 12, and the central axis of the positioning groove 340 is distributed along the central axis of the channel 13.
As an embodiment of the present invention, the insulating positioning member 34 is provided with a via hole 341, the connecting plate 33 is provided with a connecting hole 331, and one end of the connecting rod 32 passes through the via hole 341 on the insulating positioning member 34 and the connecting hole 331 on the connecting plate 33.
In this embodiment, when the connecting rod 32 and the connecting sheet 33 are connected to the insulating positioning member 34, one end of the connecting rod 32 sequentially forms a tight fit with the via hole 341 on the insulating positioning member 34 and the connecting hole 331 on the connecting sheet 33, so as to fixedly connect the connecting rod 32 with the connecting sheet 33 and the insulating positioning member 34.
As an embodiment of the utility model, the connecting rod 32 still welds with connection piece 33 mutually, and when connecting rod 32 formed the tight fit with connection piece 33's connecting hole 331, through welding connecting rod 32 and connection piece 33 mutually to further improve the steadiness that connecting rod 32 and connection piece 33 are connected, thereby make connecting rod 32 and connection piece 33 electricity be connected reliable and stable.
As an embodiment of the present invention, the outer diameter of the end of the connecting rod 32 connected to the connecting plate 33 is larger than the diameter of the connecting hole 331 of the connecting plate 33, and the cross-shaped groove 321 is opened at the end of the connecting rod 32 connected to the connecting plate 33, so that the end of the connecting rod 32 connected to the connecting plate 33 can be elastically deformed.
When the connecting piece 33 is connected with the connecting rod 32 and the insulating positioning piece 34, and the connecting rod 32 passes through the insulating positioning piece 34 and the connecting piece 33, the cross-shaped groove 321 on the connecting rod 32 is contracted, so that the connecting piece 33 and the insulating positioning piece 34 can be easily sleeved and fixed on the connecting rod 32. After the connecting piece 33 and the insulating positioning piece 34 are completely sleeved and fixed on the connecting rod 32, the cross groove 321 is outwards opened and reset, and at the moment, because the outer diameter of one end of the connecting rod 32 connected with the connecting piece 33 is larger than the diameter of the connecting hole 331 of the connecting piece 33, the insulating positioning piece 34 and the connecting piece 33 are stably limited on the connecting rod 32, and the insulating positioning piece 34 and the connecting piece 33 are prevented from falling off. After the connecting piece 33 and the insulating positioning piece 34 are completely sleeved and fixed on the connecting rod 32, the connecting piece 33 is welded with the connecting rod 32. Thus, when the other end of the connecting sheet 33 is welded, even if the connecting sheet 33 is heated to cause the tin welding between the connecting sheet and the connecting rod 32 to be dissolved, the connecting sheet 33 cannot fall off from the connecting rod 32 under the action of the gravity of the connecting sheet 33 due to the action of the cross-shaped groove 321, so that the connecting sheet 33 and the connecting rod 32 are stably and reliably connected.
As an embodiment of the present invention, the one end of the insulating positioning member 34 close to the resonant cavity 11 is flush with the side walls 131 on both sides of the channel 13 or the side walls 131 on both sides of the relative channel 13 extend toward the resonant cavity 11, and the one end of the connecting piece 33 close to the resonant cavity 11 extends toward the resonant cavity 11 relative to the insulating positioning member 34.
In this embodiment, one end of the insulating positioning member 34 close to the resonant cavity 11 is flush with the side walls 131 on both sides of the channel 13 or extends out toward the resonant cavity 11 relative to the side walls 131 on both sides of the channel 13, so that the insulating positioning member 34 can effectively isolate the connecting sheet 33 from the side walls 131 on both sides of the channel 13, and further reduce the risk of short circuit between the connecting sheet 33 and the side walls 131 on both sides of the channel 13; meanwhile, one end of the connecting piece 33 close to the resonant cavity 11 extends towards the resonant cavity 11 relative to the insulating positioning piece 34, so that the part of the connecting piece 33 exposed outside the insulating positioning piece 34 can be far away from the side walls 131 on two sides of the channel 13 as far as possible, the safety performance is further improved, and the welding operation between the connecting piece 33 and the conductive piece 5 is facilitated.
As an embodiment of the present invention, the connector assembly 3 further includes:
install in the squeeze riveting post 35 of mounting hole 12, squeeze riveting post 35 has a hole 350 along its axial through, and connector 31 is installed in squeeze riveting post 35 one end, and the one end of connecting rod 32 stretches into hole 350 and is connected with connector 31.
In this embodiment, the connector 31 is fixedly mounted in the inner hole 350 of the squeeze riveting column 35 to realize the fixed mounting of the connector 31, and one end of the connecting rod 32 extends into the inner hole 350 and is connected with the connector 31 to realize the electrical connection between the connecting rod 32 and the connector 31. After the connecting rod 32 is assembled with the insulating positioning member 34 and the connecting piece 33, the squeeze riveting column 35 is pressed into the mounting hole 12, so that the whole connector assembly 3 is stably fixed on the housing 1.
As an embodiment of the present invention, the insulating positioning member 34 includes:
a first support portion 342, the first support portion 342 being mounted to the mounting hole 12, the via hole 341 penetrating the first support portion 342;
the second supporting portion 343 is integrally formed with the first supporting portion 342, the positioning grooves 340 are distributed from one end of the second supporting portion 343 to the direction of the first supporting portion 342, the positioning grooves 340 are communicated with the via holes 341, and the second supporting portion 343 is installed in the channel 13 and is tightly fitted with the sidewalls 131 at both sides of the channel 13.
In this embodiment, the first supporting portion 342 is a cylinder shape adapted to the mounting hole 12, and the outer diameter of the first supporting portion 342 is smaller than the inner diameter of the mounting hole 12, so that the first supporting portion 342 can be conveniently installed in the mounting hole 12.
In this embodiment, the second supporting portion 343 has a long strip shape. The width of the second support portion 343 is adapted to the width of the channel 13 so that when the second support portion 343 is mounted in the channel 13, the positioning groove 340 is located at a middle position of the channel 13, so that the connecting piece 33 mounted in the positioning groove 340 is located at a middle position of the channel 13.
In this embodiment, by arranging the insulating positioning member 34 into the first supporting portion 342 and the second supporting portion 343, the insulating positioning member 34 is connected to the connecting rod 32 by using the first supporting portion 342, so as to fix the insulating positioning member 34; insulating positioning element 34 utilizes constant head tank 340 on the second supporting part 343 to play the location to connection piece 33, and first supporting part 342 and second supporting part 343 adopt integrated design, need not to install support piece respectively at passageway 13 and mounting hole 12, and the installation of being convenient for, and reduce the kind of material, reduce the material management and control degree of difficulty.
As an embodiment of the present invention, the insulating positioning member 34 further includes:
the sleeving part 344 is arranged on the first supporting part 342, the through hole 341 penetrates through the first supporting part 342 and the sleeving part 344 simultaneously, and the sleeving part 344 is inserted into the inner hole 350 of the squeeze riveting column 35.
In this embodiment, the insulating positioning element 34 is inserted into the inner hole 350 of the rivet pressing column 35 by the sleeve joint part 344, so that the insulating positioning element 34 is conveniently and fixedly connected to the connecting rod 32, and the connection strength between the insulating positioning element 34 and the connecting rod 32 is improved.
In this embodiment, the sleeving part 344 and the positioning groove 340 are respectively disposed on two opposite sides of the insulating positioning member 34. The positioning groove 340 is provided on a side of the insulating positioning member 34 away from the connector 31. Besides this embodiment, the positioning groove 340 may also be disposed on the side of the insulating positioning member 34 close to the connector 31.
As an embodiment of the present invention, the rivet pressing column 35 includes:
a main body portion 351;
a mating end 352 connected to the body portion 351 and adapted to the aperture of the mounting hole 12; and
an elongated end 353 connected to the mating end 352, the elongated end 353 having an outer diameter less than the diameter of the mating end 352.
In this embodiment, the mating end 352 is matched with the aperture of the mounting hole 12, and when the squeeze rivet column 35 is pressed into the mounting hole 12, the squeeze rivet column 35 and the mounting hole 12 form a tight fit. The extension end 353 is arranged by arranging the squeeze riveting column 35, namely, the squeeze riveting column 35 is extended to form the extension end 353. When the squeeze riveting column 35 is pressed into the mounting hole 12, the lengthened end 353 firstly enters the mounting hole 12, the lengthened end 353 is smaller than the diameter of the matching end 352, so that the lengthened end 353 can be easily placed into the mounting hole 12, the lengthened end 353 plays a role in positioning and guiding when the squeeze riveting column 35 is pressed into the mounting hole 12, the squeeze riveting column 35 can be ensured not to be inclined after squeeze riveting, and the position degree and the size of the squeeze riveting column 35 are ensured.
In the embodiment, the length of the lengthened end 353 is 2-3 mm, the outer diameter of the lengthened end 353 is 0.02-0.2 mm smaller than the inner diameter of the mounting hole 12, the lengthened end 353 can be conveniently installed in the mounting hole 12, and the riveting column 35 can be conveniently machined.
As an embodiment of the present invention, the squeeze riveting column 35 further includes a positioning ring 354 disposed between the main body 351 and the mating end 352 and protruding toward the mating end 352, and the outer diameter of the positioning ring 354 is greater than the inner diameter of the mounting hole 12.
In this embodiment, the positioning ring 354 limits the rivet pressing column 35. When the squeeze rivet column 35 is continuously pressed into the mounting hole 12, when the positioning ring 354 abuts against the positioning step of the shell 1, the squeeze rivet column 35 is pressed in place, so that the squeeze rivet column 35 is prevented from being further pressed in, and the installation and operation of a user are facilitated.
As an embodiment of the present invention, the end of the lengthened end 353 is provided with a chamfer. The chamfer of the end of the elongated end 353 serves as a guide to facilitate insertion of the elongated end 353 into the mounting hole 12.
The utility model provides a wave filter is when the equipment, installs connection piece 33 earlier in the constant head tank 340 of insulating location part 34, passes via hole 341 on the insulating location part 34 and connecting hole 331 on the connection piece 33 in proper order with the one end of connecting rod 32 again, welds connecting rod 32 and connection piece 33 simultaneously. Then, one end of the squeeze rivet column 35 is sleeved into the connecting rod 32, the connector 31 is installed at one end of the squeeze rivet column 35, the connecting rod 32 is connected with the connector 31, so that the whole connector assembly 3 is assembled, then the first supporting part 342 of the insulating positioning piece 34 is aligned with the installation hole 12, the second supporting part 343 of the insulating positioning piece 34 is aligned with the channel 13, then the squeeze rivet column 35 is pressed into the installation hole 12 to be aligned, so that the connector assembly 3 is fixed on the shell 1, at this time, the connecting sheet 33 is located at the middle position of the channel 13, finally, one end of the conductive piece 5 is welded with the resonator 2, and the other end of the conductive piece 5 is welded with the connecting sheet 33, so that the whole connector assembly 3 is installed.
The embodiment of the utility model provides a wave filter is through setting up insulating setting element, intermediate position at insulating setting element sets up the constant head tank, and install the connection piece in the constant head tank, install after the passageway at insulating setting element like this, can make the connection piece be located the intermediate position of passageway, can fix the intermediate position in the passageway with the connection piece very easily, make the lateral wall interval of connection piece and passageway both sides unanimous, effectively avoid the short circuit risk, and it is good to cause the index uniformity, and connection piece simple to operate has both been guaranteed, the mounted position of connection piece has been guaranteed again, make product property ability reliable and stable, the uniformity is good, machining efficiency has been promoted.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A filter, comprising:
the device comprises a shell provided with at least two resonant cavities, wherein the shell is provided with a mounting hole and a channel for communicating the mounting hole with one resonant cavity;
the resonator is correspondingly arranged in the resonant cavity; and
the connector assembly comprises a connector, a connecting rod, a connecting sheet and an insulating positioning piece; one end of the connecting rod is connected with the connector, the other end of the connecting rod is connected with the connecting sheet and the insulating positioning piece, the connecting rod is installed in the installation hole, the insulating positioning piece is matched with the channel and installed in the channel, and the connecting sheet is electrically connected with the resonator; the middle position of the insulating positioning piece is provided with a positioning groove, and the connecting piece is arranged in the positioning groove so as to be positioned in the middle position of the channel.
2. The filter according to claim 1, wherein the insulating positioning member is provided with a via hole, the connecting plate is provided with a connecting hole, and one end of the connecting rod passes through the via hole on the insulating positioning member and the connecting hole on the connecting plate simultaneously.
3. The filter according to claim 1, wherein one end of the insulating positioning member close to the resonant cavity is flush with the side walls on both sides of the channel or extends out towards the resonant cavity relative to the side walls on both sides of the channel, and one end of the connecting piece close to the resonant cavity extends out towards the resonant cavity relative to the insulating positioning member.
4. The filter of claim 2, wherein the insulating spacer comprises:
the first supporting part is mounted in the mounting hole, and the through hole penetrates through the first supporting part;
with first supporting part integrated into one piece's second supporting part, the constant head tank certainly the one end of second supporting part to first supporting part direction distributes, the constant head tank with the via hole intercommunication, the second supporting part install in the passageway and with the lateral wall tight fit of passageway both sides.
5. The filter of claim 1, wherein the connector assembly further comprises:
the connector is arranged at one end of the pressure riveting column, and one end of the connecting rod extends into the inner hole and is connected with the connector.
6. The filter of claim 5, wherein the squeeze post comprises:
a main body portion;
the matching end is connected with the main body part and is matched with the aperture of the mounting hole; and
and the outer diameter of the lengthened end is smaller than the diameter of the matching end.
7. The filter of claim 6, wherein the squeeze stud further comprises a positioning ring disposed between the main body portion and the mating end and protruding around the mating end, and an outer diameter of the positioning ring is larger than an inner diameter of the mounting hole.
8. A filter according to claim 6 or 7, characterised in that the ends of the elongate ends are chamfered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022176204.4U CN212991269U (en) | 2020-09-28 | 2020-09-28 | Filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022176204.4U CN212991269U (en) | 2020-09-28 | 2020-09-28 | Filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212991269U true CN212991269U (en) | 2021-04-16 |
Family
ID=75418546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022176204.4U Active CN212991269U (en) | 2020-09-28 | 2020-09-28 | Filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212991269U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115458885A (en) * | 2022-10-25 | 2022-12-09 | 四川恒湾科技有限公司 | Radio frequency device |
-
2020
- 2020-09-28 CN CN202022176204.4U patent/CN212991269U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115458885A (en) * | 2022-10-25 | 2022-12-09 | 四川恒湾科技有限公司 | Radio frequency device |
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