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CN-116565492-B - Filter device

CN116565492BCN 116565492 BCN116565492 BCN 116565492BCN-116565492-B

Abstract

The application is applicable to the technical field of radio frequency devices, and provides a filter. The cover plate covers the cavity and is provided with a tuning hole, a first groove and a tuning part, the first groove is arranged on the inner side wall of the tuning hole, the tuning part can be stressed to deform and is opposite to the tuning hole along the axial direction of the tuning hole, one side, far away from the tuning part, of the first groove along the axial direction of the tuning hole is provided with a first wall, the adjusting piece is rotatably arranged on the cover plate and is partially exposed to the tuning hole, and the adjusting piece is used for propping against the first wall and the tuning part and can move towards the tuning part under the propping action of the first wall under the condition of forward rotation. So set up, need not to snatch the regulating part through the debugging instrument to need not to select the smaller regulating part of size to make tuning Kong Birang debugging instrument, and then can solve the undersize of regulating part and cause the tuning operation difficult problem, can simplify the tuning operation of filter.

Inventors

  • GONG AIQIANG

Assignees

  • 大富科技(安徽)股份有限公司

Dates

Publication Date
20260512
Application Date
20230602

Claims (13)

  1. 1. A kind of filter, which is used to make the filter, characterized by comprising the following steps: A cavity; The device comprises a cavity, a cover plate, a first groove, a second groove, a first wall, a second wall, a first cavity, a second cavity, a first cavity and a second cavity, wherein the cavity is covered by the cover plate and is provided with a tuning hole, the first groove and the tuning part; The adjusting piece is rotatably arranged on the cover plate and partially exposed to the tuning hole, the adjusting piece is partially arranged in the first groove, and the adjusting piece is used for propping against the first wall and the tuning part and can move towards the tuning part under the propping action of the first wall under the condition of forward rotation.
  2. 2. The filter of claim 1, wherein the tuning section has elastic properties and is capable of resetting in the event of reverse rotation of the adjustment member.
  3. 3. The filter according to claim 1, wherein the adjusting member is provided with a first boss provided at least partially in the first recess, the first boss being adapted to abut against the first wall and being slidable along the first wall when the adjusting member is rotated in a forward direction, the first wall being provided to extend around a central axis of the tuning hole, the cavity having a fifth wall opposite to the cover plate, and an axial distance of the first wall from the fifth wall being provided to decrease in a direction in which the adjusting member is rotated in the forward direction.
  4. 4. A filter according to claim 3, wherein the first wall is a slope inclined with respect to the axial direction of the tuning hole; or the first wall is an arc surface; Or the first wall comprises a plurality of step surfaces, and the step surfaces are sequentially distributed in the forward rotation direction of the regulating piece and gradually reduced in axial distance from the fifth wall.
  5. 5. The filter of claim 4, wherein a transition surface is connected between two adjacent step surfaces, and the transition surface is a plane or an arc surface.
  6. 6. The filter of claim 3, wherein the number of first walls is plural, the plural first walls are sequentially distributed around the central axis of the tuning hole, the number of first bosses is plural, and each first wall is used for pressing against at least one first boss.
  7. 7. The filter according to claim 1, wherein the first groove is provided with a second boss on a side of the tuning hole axially away from the tuning part, the first wall is provided with the second boss, the adjusting member is provided with a second wall which is used for pressing against the first wall and can slide along the first wall when the adjusting member rotates positively, the cavity is provided with a fifth wall opposite to the cover plate, and an axial distance between the second wall and the fifth wall is gradually reduced in a direction of positive rotation of the adjusting member.
  8. 8. The filter according to any of claims 1-7, wherein the part of the adjustment member exposed to the tuning hole is provided with an adjustment slot for an external adjustment tool to rotate the adjustment member.
  9. 9. The filter of any of claims 1-7, wherein the cover plate comprises: The protection plate is provided with the tuning hole in a penetrating way; The tuning plate comprises a tuning part and a connecting part, wherein the connecting part is connected to the peripheral edge of the tuning part and is connected to the protection plate, and the tuning part and the connecting part jointly cover the cavity or the tuning part, the connecting part and the protection plate jointly cover the cavity.
  10. 10. The filter according to claim 9, wherein the first groove penetrates through the shield plate toward an end of the tuning portion in an axial direction of the tuning hole.
  11. 11. The filter according to claim 10, wherein an inner side wall of the first groove in a direction perpendicular to an axial direction of the tuning hole is provided with a second groove penetrating through an end of the shielding plate toward the tuning part in the axial direction of the tuning hole, and a third wall opposite to the tuning part is provided on a side of the second groove away from the tuning part in the axial direction of the tuning hole, the third wall being for pressing the regulating member.
  12. 12. The filter according to any one of claims 3 to 6, wherein the first recess is provided with a fourth wall on a side of the tuning hole in an axial direction thereof, which side is adjacent to the tuning part, and the first boss is defined between the first wall and the fourth wall.
  13. 13. The filter of any of claims 1-7, further comprising a resonant rod disposed within the cavity; the resonant rods are distributed at intervals with the tuning part and are arranged oppositely, or the resonant rods are connected with the tuning part, the cavity is provided with a fifth wall opposite to the cover plate, and the fifth wall is distributed at intervals with the resonant rods.

Description

Filter device Technical Field The application belongs to the technical field of radio frequency devices, and particularly relates to a filter. Background In the related art, the filter includes the cavity and covers the apron of closing the cavity, and the apron is equipped with tuning and the tuning hole that corresponds with tuning position, is provided with the regulating part that exposes in the tuning hole on the tuning. Based on this, related industries usually take the adjusting piece through the tuning Kong Laizhua by means of a debugging tool, so that the adjusting piece is driven to move by the debugging tool, so as to realize the deformation of the tuning part, and further realize the adjustment of the signal frequency. However, in order to enable the tuning hole to better avoid the tuning tool, a smaller-sized adjusting member is required, so that the tuning tool cannot grasp the adjusting member, i.e., tuning operation of the filter is difficult. Disclosure of Invention In view of the above, embodiments of the present application provide a filter capable of improving the technical problem that tuning operation of the filter in the related art is difficult. The embodiment of the application provides a filter, which comprises: A cavity; the tuning device comprises a cavity, a cover plate, a first groove, a second groove, a first wall, a second wall, a first cavity, a second cavity and a second cavity, wherein the cavity is covered by the cover plate and is provided with a tuning hole, the first groove and the tuning part; the adjusting piece is used for propping against the first wall and the tuning part and is arranged to move towards the tuning part under the propping action of the first wall under the condition of forward rotation. According to the filter provided by the embodiment of the application, the adjusting piece is rotatably arranged on the cover plate and used for pressing the tuning part and the first wall, and part of the adjusting piece is exposed in the tuning hole. And the adjusting piece can drive the tuning part to move under the abutting action of the first wall under the condition of forward rotation. Thus, an operator can rotate the adjusting piece through a manual or debugging tool, so that the tuning part deforms under the rotation of the adjusting piece, and the signal frequency is adjusted. Therefore, operators can grasp the adjusting piece without using a debugging tool, so that the tuning Kong Birang debugging tool is not required to be used by selecting the adjusting piece with smaller size, and the problem that the tuning operation is difficult due to the fact that the adjusting piece is not grasped well due to the fact that the size of the adjusting piece is too small can be solved, and the tuning operation of the filter can be simplified. In some embodiments, the tuning portion has elastic properties and is capable of resetting in the event of a counter-rotation of the adjustment member. In some embodiments, the adjusting member is provided with a first boss at least partially disposed in the first groove, the first boss is used for pressing against the first wall and capable of sliding along the first wall when the adjusting member rotates forward, the first wall extends around the central axis of the tuning hole, the cavity is provided with a fifth wall opposite to the cover plate, and the axial distance between the first wall and the fifth wall decreases gradually in the direction of the forward rotation of the adjusting member. In some embodiments, the first wall is a ramp inclined relative to an axial direction of the tuning hole; Or the first wall is an arc surface; Or the first wall comprises a plurality of step surfaces, and the step surfaces are sequentially distributed in the forward rotation direction of the adjusting piece and gradually reduced in axial distance from the fifth wall. In some embodiments, a transition surface is connected between two adjacent step surfaces, and the transition surface is a plane or an arc surface. In some embodiments, the number of the first walls is a plurality, the plurality of the first walls are distributed around the central axis of the tuning hole in sequence, the number of the first bosses is a plurality, and each first wall is used for pressing at least one first boss. In some embodiments, the first groove is provided with a second boss along one side of the axial direction of the tuning hole away from the tuning part, the first wall is arranged on the second boss, the adjusting piece is provided with a second wall, the second wall is used for pressing against the first wall and can slide along the first wall when the adjusting piece rotates positively, the cavity is provided with a fifth wall opposite to the cover plate, and the axial distance between the second wall and the fifth wall is gradually reduced in the direction of the positive rotation of the adjusting piece. In some embodiments, the portion of the ad