Radio frequency adjusting structure

Abstract

A radio frequency adjusting structure comprises an adjusting screw, a cover plate, a base and a limiting piece. The adjusting screw comprises a cap part and a polished rod part located at the position of the middle axis of the cap part, the polished rod part defines the vertical direction, and the cap part is provided with a first internal thread spirally surrounding the cap part in the vertical direction. The cover plate comprises a horizontally-extending base plate part and a vertically-extending cylinder part, the cover plate is provided with a through hole, the through hole penetrates through the cylinder part and the base plate part from top to bottom in the vertical direction, and the polished rod part penetrates through the through hole. The cylinder part is provided with a first external thread which spirally surrounds in the vertical direction, and the first internal thread is spirally matched with the first external thread. The base is located below the substrate part, a frequency modulation cavity is formed between the substrate part and the base, the polished rod part partially extends into the frequency modulation cavity, and the cap part is located above the substrate part and annularly arranged outside the cylinder part. The limiting piece is connected to the column part in a sleeving mode, located below the cap part and connected with the cap part in an up-down abutting mode. According to the device, chippings are prevented from falling below the cover plate, and the stability of the adjusting screw in the adjusting process is guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of radio frequency, and particularly to a radio frequency adjustment structure. Background Art

[0002] In the existing ordinary radio frequency adjustment structure in the radio frequency field, the screw and the nut are of a split design. The nut is provided with an internal thread, and the screw is provided with an external thread. The screw extends into the cover plate through the mutual cooperation between the internal and external threads and is suspended and installed on the cover plate. The frequency is adjusted by the different depths of the screw extending below the cover plate. However, since the cover plate is provided with a through hole for the screw to penetrate, when the screw and the nut are of a split design and the nut is provided with an internal thread while the screw is provided with an external thread, the debris generated by the spiral fit of the internal and external threads can easily fall into the frequency modulation cavity below the cover plate through the through hole. In the ordinary radio frequency adjustment structure in the prior art, the debris accumulated in the frequency modulation cavity for a long time will affect the frequency modulation effect of the radio frequency adjustment structure. Therefore, there is a radio frequency adjustment structure that can prevent debris from falling into the frequency modulation cavity, but after the screw is rotated downward, it needs to be in close contact with the top surface of the cover plate. In actual debugging, the screw needs to be rotated up and down repeatedly for many times, and the debugging depth will be adjusted up and down according to the actual situation. The specific rotation stop position cannot be quantified and is also not specific. The debugging fastening function is relatively single and cannot achieve the purpose of "locking and stopping immediately". It must and can only be locked when the adjusting screw is in close contact with the top surface of the cover plate. In actual use, it cannot meet the ever-changing requirements in production, and the stability is poor. Summary of the Invention

[0003] The purpose of the present invention is to provide a radio frequency adjustment structure, which avoids debris from falling below the cover plate, achieves "locking and stopping immediately", and ensures the stability of the adjusting screw during the debugging process.

[0004] To achieve the above purpose, the present invention adopts the following technical solution: A radio frequency adjustment structure, which includes: an adjusting screw, including a cap portion and a smooth rod portion located at the central axis of the cap portion, the smooth rod portion defining a vertical direction, and the cap portion being provided with a first internal thread spirally wound in the vertical direction; a cover plate, including a substrate portion extending in the horizontal direction and a column portion extending in the vertical direction, the cover plate having a through hole that penetrates the column portion and the substrate portion from top to bottom in the vertical direction, the smooth rod portion being inserted into the through hole, the column portion being provided with a first external thread spirally wound in the vertical direction, and the first internal thread being in spiral fit with the first external thread; a base, the base being located below the substrate portion and a frequency modulation cavity being formed between the substrate portion and the base, the smooth rod portion partially extending into the frequency modulation cavity, the cap portion being located above the substrate portion and surrounding the column portion; and a limiting member, the limiting member being sleeved around the column portion, the limiting member being located below the cap portion, and an upper and lower abutment being formed between the limiting member and the cap portion.

[0005] As a further improved technical solution of the present invention, the limiting member includes one of a nut member and an elastic member.

[0006] As a further improved technical solution of the present invention, the nut member is provided with a second internal thread, the second internal thread is helically engaged with the first external thread below the first internal thread, there is continuous abutment between the top edge of the nut member and the bottom edge of the cap portion, and there is separably abutment between the bottom edge of the nut member and the top edge of the substrate portion.

[0007] As a further improved technical solution of the present invention, the elastic member has an upper end and a lower end arranged oppositely, the upper end of the elastic member is in continuous abutment with the bottom edge of the cap portion and the lower end of the elastic member is in continuous abutment with the top edge of the substrate portion.

[0008] As a further improved technical solution of the present invention, the column portion and the substrate portion are one of an integral structure and a split structure.

[0009] As a further improved technical solution of the present invention, the column portion and the substrate portion are an integrally formed part by stretch forming.

[0010] As a further improved technical solution of the present invention, when the column portion and the substrate portion are of a split structure, the column portion is welded and fixed to the upper surface of the substrate portion.

[0011] As a further improved technical solution of the present invention, the cap portion includes a separately arranged top plate and an annular cushion block, the annular cushion block is sleeved on the column portion and is welded and fixed to the top plate; the limiting member is a nut member, and the top edge of the nut member forms upper and lower abutment with the bottom edge of the annular cushion block.

[0012] As a further improved technical solution of the present invention, when the column portion and the substrate portion are of a split structure, the column portion includes a base located below the limiting member, the substrate portion is provided with a receiving cavity for receiving the base, and the base and the substrate portion are in threaded connection or press riveting connection.

[0013] As a further improved technical solution of the present invention, the diameter of the cross-sectional area of the base is larger than the diameter of the cross-sectional area of the column portion provided with the first external thread.

[0014] Compared with the prior art, the present invention can rely on the spiral fit between the first internal thread of the cap portion and the first external thread of the column portion to avoid debris falling into the frequency modulation cavity below the cover plate, improve the intermodulation, and optimize the frequency modulation effect; the radio frequency adjustment structure of the present invention also further limits the installation depth of the adjustment screw relative to the cover plate through the cooperation between the adjustment screw, the cover plate and the limiting member, so as to achieve "stop immediately after locking", ensuring the stability of the adjustment screw during the debugging process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional combined view of the radio frequency adjustment structure of the present invention;

[0016] Figure 2 is a partial three-dimensional combined view of the first embodiment of the radio frequency adjustment structure of the present invention;

[0017] Figure 3 is in the first embodiment of the radio frequency adjustment structure of the present invention Figure 2 the top view of the shown part;

[0018] Figure 4 is the cross-sectional view of the first embodiment of the radio frequency adjustment structure of the present invention along Figure 3 the A-A line in the combined state;

[0019] Figure 5 is a partial three-dimensional exploded view of the first embodiment of the radio frequency adjustment structure of the present invention;

[0020] Figure 6 is the first embodiment of the radio frequency adjustment structure of the present invention along Figure 3 the cross-sectional view of the A-A line in the exploded state;

[0021] Figure 7 is a partial three-dimensional combined view of the second embodiment of the radio frequency adjustment structure of the present invention;

[0022] Figure 8 is in the second embodiment of the radio frequency adjustment structure of the present invention Figure 7 the top view of the shown part;

[0023] Figure 9 is the second embodiment of the radio frequency adjustment structure of the present invention along Figure 8 the cross-sectional view of the B-B line in the combined state;

[0024] Figure 10 is a partial three-dimensional exploded view of the second embodiment of the radio frequency adjustment structure of the present invention;

[0025] Figure 11 is the second embodiment of the radio frequency adjustment structure of the present invention along Figure 8 the cross-sectional view of the B-B line in the exploded state;

[0026] Figure 12It is a partial three-dimensional combined view of the third embodiment of the radio frequency adjustment structure of the present invention;

[0027] Figure 13 It is in the third embodiment of the radio frequency adjustment structure of the present invention Figure 12 The top view of the shown part;

[0028] Figure 14 It is a cross-sectional view of the third embodiment of the radio frequency adjustment structure of the present invention along Figure 13 The C-C line in the combined state;

[0029] Figure 15 It is a partial three-dimensional exploded view of the third embodiment of the radio frequency adjustment structure of the present invention;

[0030] Figure 16 It is the third embodiment of the radio frequency adjustment structure of the present invention along Figure 13 The cross-sectional view along the C-C line in the exploded state;

[0031] Figure 17 It is a partial three-dimensional combined view of the fourth embodiment of the radio frequency adjustment structure of the present invention;

[0032] Figure 18 It is a partial three-dimensional exploded view of the fourth embodiment of the radio frequency adjustment structure of the present invention;

[0033] Figure 19 It is a three-dimensional view of another angle of the elastic member in the fourth embodiment of the radio frequency adjustment structure of the present invention;

[0034] Figure 20 It is the front view of the fourth embodiment of the radio frequency adjustment structure of the present invention in the partial combined state;

[0035] Figure 21 It is the front view of the fourth embodiment of the radio frequency adjustment structure of the present invention in the partial exploded state;

[0036] Figure 22 It is a partial three-dimensional combined view of the fifth embodiment of the radio frequency adjustment structure of the present invention, in which half of the cover plate is sectioned;

[0037] Figure 23 It is Figure 22 The partial three-dimensional exploded view of the fifth embodiment of the radio frequency adjustment structure of the present invention shown;

[0038] Figure 24 It is the sectional view of the fifth embodiment of the radio frequency adjustment structure of the present invention in the partial combined state;

[0039] Figure 25 It is the sectional view of the fifth embodiment of the radio frequency adjustment structure of the present invention in the partial exploded state. Detailed implementation manners

[0040] The exemplary specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. If there are several specific embodiments, the features in these embodiments can be combined with each other without conflict. When the description refers to the accompanying drawings, unless otherwise specified, the same numbers in different drawings represent the same or similar elements. The content described in the following exemplary specific embodiments does not represent all embodiments consistent with the present invention; on the contrary, they are merely examples of devices, products, and / or methods consistent with some aspects of the present invention recorded in the claims of the present invention.

[0041] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the protection scope of the present invention. The singular forms "a", "the", or "said" used in the specification and claims of the present invention are also intended to include the plural forms unless the context clearly indicates otherwise.

[0042] It should be understood that terms such as "first", "second", and similar words used in the specification and claims of the present invention do not denote any order, quantity, or importance, but are only used to distinguish the named features. Similarly, words such as "a" or "one" do not denote a quantity limitation but indicate the presence of at least one. Unless otherwise indicated, the terms "front", "rear", "left", "right", "upper", "lower", and the like used in the present invention are only for convenience of description and are not limited to a specific position or a spatial orientation. The expression "including" or "comprising" is an open-ended expression, meaning that the elements appearing before "including" or "comprising" cover the elements appearing after "including" or "comprising" and their equivalents, and this does not exclude that the elements appearing before "including" or "comprising" may further include other elements. If "several" appears in the present invention, it means two or more.

[0043] Please refer to Figures 1 to 25As shown, the present invention discloses a radio frequency adjustment structure, including: an adjustment screw 1, a cover plate 2 and a limiter 4. The adjustment screw 1 includes a cap portion 12 and a light rod portion 11 located at the center axis of the cap portion 12. The light rod portion 11 defines a vertical direction, and the cap portion 12 is provided with a first internal thread 120 spirally wrapped in the vertical direction. The cover plate 2 includes a substrate portion 21 extending in a horizontal direction and a column portion 22 extending in a vertical direction. The cover plate 2 has a through hole 20, and the through hole 20 penetrates the column portion 22 and the substrate portion 21 from top to bottom in the vertical direction. The light rod portion 11 is penetrated in the through hole 20, and specifically, the light rod portion 11 is penetrated in the through hole 20 from the side of the column portion 22 away from the substrate portion 21 and exposed at the side of the substrate portion 21 away from the column portion 22. The column part 22 is provided with a first external thread 220 spirally wound in the vertical direction, and the first internal thread 120 is spirally matched with the first external thread 220. The base 3 is located below the substrate part 21 and a frequency modulation cavity is formed between the substrate part 21 and the base 3. The light rod part 11 partially extends into the frequency modulation cavity, and the cap part 12 is located above the substrate part 21 and is arranged around the column part 22. The stopper 4 is sleeved around the column part 22, and the stopper 4 is located below the cap part 12, and the stopper 4 and the cap part 12 form an upper and lower abutment.

[0044] The invention focus of the radio frequency adjustment structure of the present invention is to set a limiter 4, which can limit the position between the adjustment screw 1 and the cover plate 2. Therefore, the radio frequency adjustment structure of the present invention can not only rely on the spiral cooperation between the first internal thread 120 of the cap part 12 and the first external thread 220 of the column part 22 to avoid debris from falling into the frequency modulation cavity under the cover plate 2, improve intermodulation, and optimize the frequency modulation effect; the radio frequency adjustment structure of the present invention also further limits the installation depth of the adjustment screw 1 relative to the cover plate 2 in the frequency modulation cavity through the cooperation between the adjustment screw 1, the cover plate 2 and the limiter 4, so as to achieve "lock and stop" and ensure the stability of the adjustment screw 1 during the debugging process.

[0045] Please refer to Figures 1 to 6 The embodiment 1 shown, Figures 7 to 11 Embodiment 2 shown Figures 17 to 21 The fourth embodiment shown and Figures 22 to 25 In the fifth embodiment shown, the cap portion 12 includes a horizontally extending top plate 121 and a vertically extending annular side plate 122 , and the top plate 121 is provided with a notch 1210 for facilitating tool positioning and screwing. Figures 12 to 16In the third embodiment shown, although it does not include the annular side plate 122 vertically extending from the top plate 121, the annular spacer 123 separately provided from the top plate 121 also functions as the annular side plate 122 after being fixedly welded to the top plate 121.

[0046] The following details two specific embodiments of the limiting member 4.

[0047] Please refer to Figures 1 to 16 and Figures 22 to 25 As shown, the first embodiment of the limiting member 4 is the nut member 41. It should be noted that in the vertical direction, the upper side is the top edge or the upper end, and the lower side is the bottom edge or the lower end. The nut member 41 is provided with a second internal thread 410, and the second internal thread 410 is helically engaged with the first external thread 220 below the first internal thread 120. There is continuous abutment between the top edge of the nut member 41 and the bottom edge of the cap portion 12, and there is separably abutment between the bottom edge of the nut member 41 and the top edge of the substrate portion 21. That is, the helical engagement between the second internal thread 410 of the nut member 41 and the first external thread 220 of the column portion 22 causes the nut member 41 to hover at a certain position on the column portion 22, or the thickness of the nut member 41 is used to limit the installation depth of the adjusting screw 1 relative to the cover plate 2, and further control the depth of the optical rod portion 11 extending into the frequency modulation cavity.

[0048] Please refer to Figures 17 to 21 As shown, the second embodiment of the limiting member 4 is the elastic member 42. The elastic member 42 has an upper end 421 and a lower end 422 arranged oppositely. The upper end 421 of the elastic member 42 is in continuous abutment with the bottom edge of the cap portion 12, and the lower end 422 of the elastic member 42 is in continuous abutment with the top edge of the substrate portion 21. The abutment between the upper end 421 of the elastic member 42 and the cap portion 12 and between the lower end 422 and the substrate portion 21 enables the elastic member 42 to be compressed, and the elastic deformation of the elastic member 42 is used to limit the installation depth of the adjusting screw 1 relative to the cover plate 2, and further control the depth of the optical rod portion 11 extending into the frequency modulation cavity.

[0049] Therefore, the present invention provides two specific implementations of the position limiting member 4. That is, the position limiting member 4 can be one of a nut member 41 and an elastic member 42. The two specific implementations of the position limiting member 4 each have advantages and disadvantages. The advantages of the nut member 41 are: stable structure and long service life; the disadvantage of the nut member 41 is: it is cumbersome to manually adjust its own position to achieve the position limitation of the adjusting screw 1. The advantages of the elastic member 42 are: it is relatively simple to adaptively adjust its own thickness to achieve the position limitation of the adjusting screw 1; the disadvantage of the elastic member 42 is: it is easy to produce elastic fatigue and has a short service life. The elastic member 42 is not limited to the specific form of the spring. In other embodiments not shown in the figure, the position limiting member 4 can also be a gasket. Since the gasket is not provided with an internal thread like the nut member 41, the gasket is closer to the elastic member 42, and the installation depth of the adjusting screw 1 relative to the cover plate 2 is limited by elastic deformation.

[0050] Various specific implementations of the adjusting screw 1 and / or the cover plate 2 are described in detail below.

[0051] Please refer to Figures 1 to 6 As shown, the cover plate 2 is an integral piece in which one part (the column part 22) protrudes upward from another part (the base plate part 21). Figures 22 to 25 As shown, the cover plate 2 is an integral piece formed by stretching one part (the column part 22) upward from another part (the base plate part 21). In the above two cases, although the molding process of the cover plate 2 is different, the column part 22 and the base plate part 21 are always an integral structure.

[0052] Of course, it is easy to imagine that the column portion 22 and the base plate portion 21 can also be separate structures.

[0053] Please refer to Figures 7 to 11As shown, when the column part 22 and the substrate part 21 are in the first implementation mode of a split structure, the column part 22 includes a base 221 located below the limiting member 4. The substrate part 21 is provided with a receiving chamber 210 for receiving the base 221, and the connection between the base 221 and the substrate part 21 is a threaded connection or a press riveting connection. When the connection between the base 221 and the substrate part 21 is a threaded connection, it can be understood that the outside of the base 221 is provided with a second external thread (not shown), and the inner wall surface of the substrate part 21 facing the receiving chamber 210 is provided with a third internal thread (not shown). The second external thread and the third internal thread cooperate to threadedly connect the base 221 to the substrate part 21. When the connection between the base 221 and the substrate part 21 is a press riveting connection, the base 221 can be directly press riveted to the substrate part 21 by press riveting. The diameter of the cross-sectional area of the base 221 is larger than the diameter of the cross-sectional area of the column part 22 provided with the first external thread 220.

[0054] Please refer to Figures 12 to 16 As shown, when the column part 22 and the substrate part 21 are in the second implementation mode of a split structure, the column part 22 is welded and fixed to the upper surface of the substrate part 21. On the basis of the first implementation mode in which the column part 22 is welded and fixed to the upper surface of the substrate part 21, the adjusting screw 1 can also be a split structure. Specifically, the cap part 12 includes a separately provided top plate 121 and an annular cushion block 123. The annular cushion block 123 is sleeved on the column part 22 and is welded and fixed to the top plate 121. At this time, the limiting member 4 is a nut member 41, and the top edge of the nut member 41 and the bottom edge of the annular cushion block 123 are in up-and-down abutment.

[0055] Therefore, the present invention first provides two implementation modes here, namely the integral structure and the split structure of the cover plate 2. Moreover, in the split structure implementation mode of the cover plate 2, an alternative implementation mode of the adjusting screw 1 is also provided. The integral structure and / or the split structure of the adjusting screw 1 and / or the cover plate 2 are not limited to the above-mentioned various types.

[0056] In summary, the key invention point of the radio frequency adjustment structure of the present invention lies in that: a limiting member 4 is additionally provided in the radio frequency adjustment structure, and the limiting member 4 can limit the position between the adjusting screw 1 and the cover plate 2. Therefore, the radio frequency adjustment structure of the present invention can not only rely on the spiral fit between the first internal thread 120 of the cap portion 12 and the first external thread 220 of the column portion 22 to avoid debris falling into the frequency modulation cavity below the cover plate 2, improve the intermodulation, and optimize the frequency modulation effect; the radio frequency adjustment structure of the present invention also further limits the installation depth of the adjusting screw 1 relative to the cover plate 2 through the cooperation between the adjusting screw 1, the cover plate 2 and the limiting member 4, so as to achieve "stop immediately after locking", ensuring the stability of the adjusting screw 1 during the debugging process.

[0057] The above embodiments are only used to illustrate the present invention and do not limit the technical solutions described in the present invention. The understanding of the present invention should be based on those skilled in the art of the relevant technical field. Although this specification has described the present invention in detail with reference to the above embodiments, those of ordinary skill in the art should understand that those skilled in the relevant technical field can still modify the present invention or make equivalent substitutions, and all technical solutions and their improvements that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. A radio frequency adjustment structure, characterized in that: Comprising: A screw adjusting member (1), including a cap portion (12) and a smooth rod portion (11) located at the axis of the cap portion (12), the smooth rod portion (11) defining a vertical direction, and the cap portion (12) being provided with a first internal thread (120) spirally wound in the vertical direction; A cover plate (2), including a substrate portion (21) extending in the horizontal direction and a column portion (22) extending in the vertical direction, the cover plate (2) having a through hole (20), the through hole (20) penetrating through the column portion (22) and the substrate portion (21) from top to bottom in the vertical direction, the smooth rod portion (11) being inserted into the through hole (20), the column portion (22) being provided with a first external thread (220) spirally wound in the vertical direction, and the first internal thread (120) being in spiral fit with the first external thread (220); A base (3), the base (3) being located below the substrate portion (21) and a frequency modulation cavity being formed between the substrate portion (21) and the base (3), a part of the smooth rod portion (11) extending into the frequency modulation cavity, the cap portion (12) being located above the substrate portion (21) and surrounding and sleeving outside the column portion (22); and A limiting member (4), the limiting member (4) being sleeved around the column portion (22), the limiting member (4) being located below the cap portion (12), and an upper and lower abutment being formed between the limiting member (4) and the cap portion (12).

2. The radio frequency adjustment structure according to claim 1, wherein: The limiting member (4) includes one of a nut member (41) and an elastic member (42).

3. The radio frequency adjustment structure according to claim 2, characterized in that: The nut member (41) is provided with a second internal thread (410), the second internal thread (410) being in spiral fit with the first external thread (220) below the first internal thread (120), a continuous abutment being formed between the top edge of the nut member (41) and the bottom edge of the cap portion (12), and a separable abutment being formed between the bottom edge of the nut member (41) and the top edge of the substrate portion (21).

4. The radio frequency adjustment structure according to claim 2, wherein: The elastic member (42) has an upper end (421) and a lower end (422) arranged oppositely, the upper end (421) of the elastic member (42) being in continuous abutment with the bottom edge of the cap portion (12) and the lower end (422) of the elastic member (42) being in continuous abutment with the top edge of the substrate portion (21).

5. The radio frequency adjustment structure according to claim 1, characterized in that: The column portion (22) and the substrate portion (21) are one of an integral structure and a split structure.

6. The radio frequency adjustment structure according to claim 5, wherein: The column portion (22) and the substrate portion (21) are an integrally formed part by stretch forming.

7. The radio frequency adjustment structure according to claim 5, characterized in that: When the column portion (22) and the substrate portion (21) are in a split structure, the column portion (22) is welded and fixed to the upper surface of the substrate portion (21).

8. The radio frequency adjustment structure according to claim 7, wherein: The cap portion (12) includes a separately arranged top plate (121) and an annular cushion block (123), the annular cushion block (123) being sleeved on the column portion (22) and being welded and fixed to the top plate (121); the limiting member (4) is a nut member (41), and an upper and lower abutment is formed between the top edge of the nut member (41) and the bottom edge of the annular cushion block (123).

9. The radio frequency adjustment structure according to claim 5, wherein: When the column part (22) and the substrate part (21) are of a split structure, the column part (22) includes a base (221) located below the limiting member (4), the substrate part (21) is provided with a receiving chamber (210) for receiving the base (221), and the connection between the base (221) and the substrate part (21) is a threaded connection or a press riveting connection.

10. The radio frequency adjustment structure according to claim 9, wherein: The diameter of the cross-sectional area of the base (221) is greater than the diameter of the cross-sectional area of the column part (22) provided with the first external thread (220).

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