CN201412426Y - Screw device and chamber wave filter applying same - Google Patents
Screw device and chamber wave filter applying same Download PDFInfo
- Publication number
- CN201412426Y CN201412426Y CN2009201586734U CN200920158673U CN201412426Y CN 201412426 Y CN201412426 Y CN 201412426Y CN 2009201586734 U CN2009201586734 U CN 2009201586734U CN 200920158673 U CN200920158673 U CN 200920158673U CN 201412426 Y CN201412426 Y CN 201412426Y
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- screw device
- dilation
- screw
- thread portion
- helical thread
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Abstract
A screw device at least includes a thread part and an expansion part. The thread part and the expansion part are fixedly connected. A groove in the axial extension direction of the screw device is arranged on the expansion part. The section expansion of the expansion part near one end of the thread part is smaller than that far from the same. The screw device is self-locked without nuts. Comparedwith the conventional screw locked by the nut, the screw device has substantially reduced cost. Additionally, the utility model also provides a chamber wave filter using the screw device.
Description
Technical field
The utility model relates to communication technical field, relates in particular to screw device and uses the cavity body filter of this screw device.
Background technique
Wave filter is widely used in the communications field as a kind of frequency selection device, especially field of radio frequency communication.Finish in the base station that signal transmits and receives in communications system, wave filter is used to select signal of communication, clutter or undesired signal that the filtering communication signal frequency is outer.
At present, in mobile communication base station system, the signal that generally uses cavity body filter to come antenna is transmitted and received carries out the frequency selection.Cavity body filter comprises cavity and cover plate, and this cavity is provided with a plurality of cavitys.The bottom that forms each cavity on this cavity is provided with resonatron.This resonatron inside is hollow shape, forms resonant cavity.On the cover board corresponding with the resonant cavity of this resonatron position offers screw, and a tuning screw cooperates with this screw, and gos deep in this cavity.By adjusting the distance of this tuning screw and this resonatron, reach the purpose of adjusting resonant frequency.
After adjusting resonant frequency, loosening in order to prevent above-mentioned tuning screw, need set up a set screw nut in the part that this tuning screw is positioned at outside the cavity usually.Yet, in the real world of resource worsening shortages nowadays, must not become irrespective problem in order to pursue higher economic and social benefit, to save production cost.And each tuning screw of above-mentioned cavity body filter all needs additionally to set up a set screw nut, needs tuning cavity body filter for having a plurality of resonatrons, needs a large amount of set screw nuts, therefore, has greatly increased the cost of production of cavity body filter.
The model utility content
In view of this, the utility model provides a kind of have auto-lock function and screw device with low cost.
In addition, also be necessary to provide a kind of cavity body filter that uses above-mentioned screw device.
A kind of screw device comprises a helical thread portion and a dilation at least, described helical thread portion is fixedlyed connected with dilation, on the described screw device axis bearing of trend of described dilation upper edge, be provided with groove, described dilation near the cross-sectional expansion of an end of described helical thread portion less than cross-sectional expansion away from an end of described helical thread portion.
In the above-mentioned screw device, the periphery of described dilation is provided with the screw thread identical with the pitch of described helical thread portion.
In the above-mentioned screw device, the part that forms described groove on the described dilation is two relative faces, and the plane at described two face places has certain included angle.
In the above-mentioned screw device, described dilation comprises first fastening part and second fastening part, described first fastening part and second fastening part are of similar shape and size, and on described first fastening part and second fastening part, near shape and the shape and the equal and opposite in direction big or small and of described helical thread portion away from described helical thread portion.
In the above-mentioned screw device, described helical thread portion and described dilation are one-body molded, and are made by elastic material.
A kind of cavity body filter, described cavity body filter is provided with the screw that cooperates with above-mentioned screw device, and described screw device adjustable ground is assemblied in the described screw.
After above-mentioned screw device is screwed into cavity body filter, because the described cross-sectional expansion of described dilation is greater than the cross-sectional expansion of described helical thread portion, described dilation is extruded, described groove is distortion therefore, producing one makes described dilation recover the active force that it is not extruded preceding shape, this active force pushes described screw, and described screw device is locked on the described screw, and then realizes the self-locking of described screw device.Described screw device does not need nut can realize self-locking, adopts nut to come lock screw with respect to tradition, and its cost reduces greatly.Because described screw dress combines with described cavity body filter, it does not need nut from locking on described cavity body filter, and described screw device can be contained in the cavity of described cavity body filter fully, do not need additionally to increase the size of described cavity body filter, help the miniaturization of described cavity body filter and integrated.
Description of drawings
Fig. 1 is the schematic representation of the screw device of a better embodiment.
Fig. 2 is the schematic representation of the cavity body filter of use screw device shown in Figure 1.
Embodiment
Present embodiment provides a kind of screw device, this screw device comprises a helical thread portion and a dilation at least, described helical thread portion is fixedlyed connected with dilation, on the described screw device axis bearing of trend of described dilation upper edge, be provided with groove, described dilation near the cross-sectional expansion of an end of described helical thread portion less than cross-sectional expansion away from an end of described helical thread portion.In addition, present embodiment also provides a kind of cavity body filter that uses above-mentioned screw device, this cavity body filter comprises cavity, on described cavity, be provided with a cavity at least, cavity bottom at the described cavity of described formation is provided with screw, described screw device cooperates with described screw rotationally, and described dilation is squeezed in described screw and has the power of expanding to screw, makes described screw device from locking in the described screw.
In order to describe the screw device that the utility model provides in detail, see also Fig. 1.Described screw device 100 comprises helical thread portion 110 and dilation 120.
Described helical thread portion 110 is provided with screw thread.Described dilation 120 comprises first fastening part 121 and second fastening part 123.The described screw device 100 axis bearing of trends in described dilation 120 upper edges are provided with groove 125.First fastening part 121 and second fastening part 123 are relatively arranged on the both sides of described groove 125, and are provided with the screw thread identical with the pitch of described helical thread portion 110 in the periphery of described first fastening part 121 and second fastening part 123.In other embodiments, screw thread also can not established in the periphery of described first fastening part 121 and second fastening part 123.Described first fastening part 121 and second fastening part 123 are of similar shape and size, and on described first fastening part 121 and second fastening part 123, near shape and the shape and the equal and opposite in direction big or small and away from described helical thread portion of described helical thread portion 110.The part that forms described groove 125 on the described dilation 120 is two relative faces, and the plane at described two face places has certain included angle.
Described helical thread portion 110 is formed in one with described dilation 120, and described helical thread portion 110 and dilation 120 are made by elastic material.In other embodiments, described helical thread portion 110 can also be that split is fixedlyed connected with dilation 120, and described helical thread portion 110 can be that conductor material is made, and described dilation 120 is made by elastic material or plastic material.
Described groove 125 is used for described screw device 100 is screwed into cavity, covers the back at the cover plate of cavity body filter described screw device 100 is adjusted, thereby adjust the electric capacity of described cavity body filter, realizes adjusting the purpose of resonant frequency.
After described screw device 100 is screwed into cavity, because the cross-sectional expansion of described dilation 120 is greater than the cross-sectional expansion of described helical thread portion 110, described dilation 120 is extruded, the therefore distortion of described groove 125, producing one makes described dilation 120 recover the active force that it is not extruded preceding shape, this active force pushes described cavity, described screw device 100 is locked on the described cavity, and then realizes the self-locking of described screw device 100.
Described screw device 100 can be realized self-locking, and the realization of described auto-lock function do not need additionally to set up nut, therefore, makes and makes described cost with screw device of auto-lock function and significantly reduce.In addition, because described screw device 100 combines with described cavity body filter, it does not need nut from locking on described cavity body filter, and described screw device can be contained in the cavity of described cavity body filter fully, do not need additionally to increase the size of described cavity body filter, help the miniaturization of described cavity body filter and integrated.
As shown in Figure 2, it is the schematic representation of the cavity body filter of use screw device 100 shown in Figure 1.Described cavity body filter 200 comprises cavity 210, resonance post 220, cover plate 230, screw device 100.Described cavity 210 is provided with cavity 211, described resonance post 220 is contained in the described cavity 211, and an end of described resonance post 220 and described cavity 210 is fixing, and its other end has flange plate 221, described resonance post 220 inside are hollow shape, form containing space 223.Corresponding part, position with described resonance post 220 on the described cover plate 230 is provided with screw 213.Described screw device 100 matches with described screw 213, and described helical thread portion 110 has part to go deep in the described cavity 211.Described cover plate 230 is covered on the described cavity 210.After described cover plate 230 covers, adjust the position of described screw device 100 in described cavity body filter 200 by the groove 125 of screw device 100, and then realize adjusting the purpose of resonant frequency.
The detailed description of the cavity body filter 200 of above-mentioned screw device 100 and this screw device 100 of use, be for helping to understand the technological scheme of the utility model, the technician of related domain should be appreciated that the content of this specification should not be construed as restriction of the present utility model.
Claims (6)
1. screw device, it is characterized in that: this screw device comprises a helical thread portion and a dilation at least, described helical thread portion is fixedlyed connected with dilation, on the described screw device axis bearing of trend of described dilation upper edge, be provided with groove, described dilation near the cross-sectional expansion of an end of described helical thread portion less than cross-sectional expansion away from an end of described helical thread portion.
2. screw device as claimed in claim 1 is characterized in that: the periphery of described dilation is provided with the screw thread identical with the pitch of described helical thread portion.
3. screw device as claimed in claim 1 is characterized in that: the part that forms described groove on the described dilation is two relative faces, and the plane at described two face places has certain included angle.
4. screw device as claimed in claim 1, it is characterized in that: described dilation comprises first fastening part and second fastening part, described first fastening part and second fastening part are of similar shape and size, and on described first fastening part and second fastening part, near shape and the shape and the equal and opposite in direction big or small and of described helical thread portion away from described helical thread portion.
5. screw device as claimed in claim 1 is characterized in that: described helical thread portion and described dilation are one-body molded, and are made by elastic material.
6. cavity body filter, it is characterized in that: described cavity body filter is provided with the screw that cooperates with the screw device of any one in the described claim 1 to 5, and described screw device adjustable ground is assemblied in the described screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201586734U CN201412426Y (en) | 2009-06-10 | 2009-06-10 | Screw device and chamber wave filter applying same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201586734U CN201412426Y (en) | 2009-06-10 | 2009-06-10 | Screw device and chamber wave filter applying same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201412426Y true CN201412426Y (en) | 2010-02-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201586734U Expired - Fee Related CN201412426Y (en) | 2009-06-10 | 2009-06-10 | Screw device and chamber wave filter applying same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201412426Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922493B (en) * | 2009-06-11 | 2012-10-17 | 深圳市大富科技股份有限公司 | Screw device and cavity filter using same |
| CN102937133A (en) * | 2012-09-24 | 2013-02-20 | 大连金房子门窗制造有限公司 | Bolt for adjusting hinge clearance |
| CN107004931A (en) * | 2014-12-31 | 2017-08-01 | 深圳市大富科技股份有限公司 | Radio frequency remote equipment, duplexer, wave filter and tap fixture |
-
2009
- 2009-06-10 CN CN2009201586734U patent/CN201412426Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922493B (en) * | 2009-06-11 | 2012-10-17 | 深圳市大富科技股份有限公司 | Screw device and cavity filter using same |
| CN102937133A (en) * | 2012-09-24 | 2013-02-20 | 大连金房子门窗制造有限公司 | Bolt for adjusting hinge clearance |
| CN107004931A (en) * | 2014-12-31 | 2017-08-01 | 深圳市大富科技股份有限公司 | Radio frequency remote equipment, duplexer, wave filter and tap fixture |
| CN107004931B (en) * | 2014-12-31 | 2019-06-11 | 深圳市大富科技股份有限公司 | Radio frequency remote equipment, duplexer, filter and tap fixing piece |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN DAFU SCIENCE AND TECHNOLOGY CO., LTD. Free format text: FORMER NAME: DAFU (SHENZHEN) SCIENCE AND TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: The establishment of Baoan District Shiyan Town, 518108 Shenzhen Road, Guangdong province with rich industrial area A, building B Patentee after: SHENZHEN TATFOOK TECHNOLOGY Co.,Ltd. Address before: The establishment of Baoan District Shiyan Town, 518108 Shenzhen Road, Guangdong province with rich industrial area A, building B Patentee before: Shenzhen tatfook Technology Co.,Ltd. Address after: The establishment of Baoan District Shiyan Town, 518108 Shenzhen Road, Guangdong province with rich industrial area A, building B Patentee after: Shenzhen tatfook Technology Co.,Ltd. Address before: The establishment of Baoan District Shiyan Town, 518108 Shenzhen Road, Guangdong province with rich industrial area A, building B Patentee before: Shenzhen Tat Fook Technology Co.,Ltd. |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: ANHUI DAFU ELECTROMECHANICAL TECHNOLOGY Co.,Ltd. Assignor: SHENZHEN TATFOOK TECHNOLOGY Co.,Ltd. Contract record no.: 2010440020111 Denomination of utility model: Screw device and cavity filter using same Granted publication date: 20100224 License type: Exclusive License Record date: 20100716 |
|
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 518104, Guangdong, Shenzhen province Baoan District manhole Street oyster road manhole Industrial Company Third Industrial Zone A1, A2, A3 101 and 2 layers, A4 Patentee after: SHENZHEN TATFOOK TECHNOLOGY Co.,Ltd. Address before: The establishment of Baoan District Shiyan Town, 518108 Shenzhen Road, Guangdong province with rich industrial area A, building B Patentee before: SHENZHEN TATFOOK TECHNOLOGY Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100224 Termination date: 20160610 |