CN103682536A - Cavity filter, tuning screw and self-locking screw - Google Patents
Cavity filter, tuning screw and self-locking screw Download PDFInfo
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- CN103682536A CN103682536A CN201210338662.0A CN201210338662A CN103682536A CN 103682536 A CN103682536 A CN 103682536A CN 201210338662 A CN201210338662 A CN 201210338662A CN 103682536 A CN103682536 A CN 103682536A
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Abstract
The invention relates to the field of communication equipment, in particular to a cavity filter, a tuning screw and a self-locking screw. The cavity filter comprises a cavity; a cover plate is sealed on and covers the cavity; the tuning screw is driven into a threaded hole formed in the cover plate and is in threaded mesh with the cover plate; the self-locking screw is used to be driven in a threaded hole formed in a metal component and be in threaded mesh with the metal component; each one of the tuning screw and the self-locking screw comprises a rigid part and an elastic part which are connected with each other; preprocessed threads are arranged at the rigid parts; outer threads are arranged at the elastic parts and formed by tapping on the outer surfaces of the elastic parts by the threads in the threaded holes when the screws are screwed in the threaded holes; screwdriver accommodation grooves are formed in the elastic parts or the rigid parts; when the screws are locked with a metal piece, the threads of the metal piece can be tapped at the elastic parts to form outer threads, so as to be tightly locked with the metal piece. The cavity filter, the tuning screw and the self-locking screw can implement screw self-locking, improve the production efficiency, reduce the production cost, meanwhile, improve the radio frequency debugging precision, and promote the whole performance of the cavity filter.
Description
Technical field
The present invention relates to domain of communication equipment, relate in particular to a kind of cavity body filter, tuning screw and Self-locking screw.
Background technology
At modern communication field, cavity body filter has become an important ring of wireless telecommunications, and existing cavity body filter is generally partly comprised of input/output port, cavity, resonator, cover plate and tuning screw assembly etc.Wherein, tuning screw assembly can be finely tuned cavity body filter, to reach the object that changes frequency, has important function.Traditional tuning screw assembly is comprised of tuning screw, locking nut and outer serrated lock washer, and part is many, and assembling is complicated, and cost is high, and production efficiency is low.Tactic pattern based on traditional, cavity body filter, when actual production, need be established specially an independent operation and be responsible on the cover board wearing locking nut and outer serrated lock washer, complete after this operation, product just flows to debugging district, has so just caused production efficiency low, the wasting of resources, production cost is high.
In sum, obviously there are shortcomings and deficiencies in existing tuning screw and cavity body filter in process of production, need to find a kind of simpler and effective scheme and solve the problems referred to above.
Summary of the invention
The problem existing for solving prior art, the invention provides a kind of cavity body filter, tuning screw and Self-locking screw, and it can realize screw self-locking, enhances productivity, and can improve radio frequency adjustment accuracy simultaneously, promotes cavity body filter overall performance.
For achieving the above object, the invention provides a kind of cavity body filter, comprising:
Cavity, cover plate, is covered on described cavity, tuning screw, pass described cover plate and extend in described cavity, described tuning screw comprise with described cover plate on screwed hole adaptation head and extend in cavity for the tuning bar portion of radio frequency parameter, the head of described tuning screw comprises interconnective rigid portion and elastic portion, described rigid portion has the screw thread of preprocessing, described elastic portion has when described tuning screw is screwed into this cover plate screwed hole, the external screw thread that screw thread in this screwed hole forms at described elastic portion outer surface self tapping, described rigid portion is connected with the bar portion of described tuning screw, described elastic portion is positioned at the end of described tuning screw.
According to cavity body filter of the present invention, in another embodiment, described elastic portion is connected with the bar portion of described tuning screw, and described rigid portion is positioned at the end of described tuning screw, and the diameter of described rigid portion is greater than the diameter of described elastic portion; Described cover plate screwed hole comprises the first adaptive with described rigid portion size and the second portion adaptive with described elastic portion size.
According to cavity body filter of the present invention, described rigid portion comprises the first end face being connected with described elastic portion, described elastic portion comprises the second end face being connected with rigid portion, the first end face of described rigid portion is provided with boss, forms the groove coordinating with described boss on the second end face of described elastic portion; The lower edge indent of described boss forms draw-in groove, and described groove upper limb evagination forms bead, and described draw-in groove and described bead adaptation are to snap together described rigid portion and described elastic portion.
According to cavity body filter of the present invention, the boss of described rigid portion is provided with for avoiding rigid portion and described elastic portion position limiting structure in relative rotation.
According to cavity body filter of the present invention, described position limiting structure is lug, nib, tab or the annular knurl that is formed at described boss side surfaces.
According to cavity body filter of the present invention, described rigid portion and described elastic portion are by crimping moulding or the directly injection mo(u)lding in described rigid portion of described elastic portion.
According to cavity body filter of the present invention, described elastic portion is nylon material or is the composite material of PE material and PP material.Or adopt other quality softer and there is flexible metal material, for example copper.
According to cavity body filter of the present invention, on the screwed hole of described cover plate, be provided with self-tapping screw with described elastic portion corresponding part.
According to cavity body filter of the present invention, in described elastic portion or described rigid portion, be provided with screwdriver accommodating groove.
The present invention is corresponding provides a kind of tuning screw, for cavity body filter, cavity body filter comprises cavity, be covered in the cover plate of described cavity, pass described cover plate and extend in described cavity, described tuning screw comprise with described cover plate on screwed hole adaptation head and extend in cavity for the tuning bar portion of radio frequency parameter, the head of described tuning screw comprises interconnective rigid portion and elastic portion, described rigid portion has the screw thread of preprocessing, described elastic portion has when described tuning screw is screwed into this cover plate screwed hole, the external screw thread that screw thread in this screwed hole forms at described elastic portion outer surface self tapping, described rigid portion is connected with the bar portion of described tuning screw, and described elastic portion is positioned at other positions of described tuning screw end or described head.
According to tuning screw of the present invention, described rigid portion comprises the first end face being connected with described elastic portion, described elastic portion comprises the second end face being connected with rigid portion, the first end face of described rigid portion is provided with boss, forms the groove coordinating with described boss on the second end face of described elastic portion; The lower edge indent of described boss forms draw-in groove, and described groove upper limb evagination forms bead, and described draw-in groove and described bead adaptation are to snap together described rigid portion and described elastic portion.
According to tuning screw of the present invention, the boss of described rigid portion is provided with for avoiding rigid portion and described elastic portion position limiting structure in relative rotation.
According to tuning screw of the present invention, described position limiting structure is lug, nib, tab or the annular knurl that is formed at described boss side surfaces.
According to tuning screw of the present invention, described rigid portion and described elastic portion are by crimping moulding or the directly injection mo(u)lding in described rigid portion of described elastic portion.
According to tuning screw of the present invention, described elastic portion is nylon material or is the composite material of PE material and PP material.Or adopt other quality softer and there is flexible metal material, for example copper.
According to tuning screw of the present invention, in described elastic portion or rigid portion, be also provided with screwdriver accommodating groove.
The present invention also provides a kind of Self-locking screw, for being driven into, be formed in the screwed hole of metal parts and screw-threaded engagement with it, described Self-locking screw comprises interconnective rigid portion and elastic portion, described rigid portion has the screw thread of preprocessing, described elastic portion has when described Self-locking screw is screwed into metal component screwed hole, the external screw thread that the screw thread in this screwed hole forms at described elastic portion outer surface self tapping.
According to Self-locking screw of the present invention, described rigid portion comprises the first end face being connected with described elastic portion, described elastic portion comprises the second end face being connected with rigid portion, the first end face of described rigid portion is provided with boss, forms the groove coordinating with described boss on the second end face of described elastic portion; The lower edge indent of described boss forms draw-in groove, and described groove upper limb evagination forms bead, and described draw-in groove and described bead adaptation are to snap together described rigid portion and described elastic portion.
The present invention is by being driven into tuning screw to the tuning screwed hole on cover plate, metal threaded meeting on tuning screwed hole goes out external screw thread at the peripheral self tapping of elastic portion, make elastic portion and the tight interlock of tuning screwed hole, and because the coefficient of friction of elastic portion is much larger than metal, there is certain elasticity and rigidity, can make elastic portion after tap out, block in screwed hole, make to be difficult for skidding between the screwed hole on tuning screw and cover plate, thereby make tuning screw realize the function of self-locking anti-loosing, to replace locking nut and the outer serrated lock washer in traditional tuning screw assembly.The bar portion of simultaneous tuning screw keeps its radio frequency parameter tuber function, but commissioning staff in when debugging owing to removing the work of revolving locking nut and outer serrated lock washer of twisting from, debugging work just becomes more simply and easily operation, operating efficiency is greatly improved.And tuning screw of the present invention is only comprised of parts, and elastic portion cost is low, therefore saved rapidoprint, reduced production cost.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the cross-section structure of a kind of embodiment of cavity body filter of the present invention;
Fig. 2 is the stereogram of a kind of embodiment of tuning screw of the present invention;
Fig. 3 is the profile of a kind of embodiment of tuning screw of the present invention;
Fig. 4 is the cutaway view of a kind of embodiment of tuning screw elastic portion of the present invention;
Fig. 5 is the cutaway view of a kind of embodiment of tuning screw rigid portion of the present invention;
Fig. 6 is the schematic diagram of the cross-section structure of the another kind of embodiment of cavity body filter of the present invention;
Fig. 7 is the schematic diagram of the cross-section structure of another embodiment of cavity body filter of the present invention;
Fig. 8 is the stereogram of a kind of embodiment of lining of cavity body filter of the present invention;
Fig. 9 is the schematic diagram of the section of the another kind of embodiment of tuning screw of the present invention;
Figure 10 is the cutaway view of a kind of embodiment of cover plate screwed hole of coordinating with tuning screw in Fig. 9.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.Specific embodiment described herein only, in order to explain the present invention, is not intended to limit the present invention.
As shown in Figure 1, a kind of cavity body filter 200 of the present invention, comprises, cavity 203, cover plate 201 and tuning screw 100, and cover plate 201 is covered on cavity 203; Tuning screw 100 is driven into and is formed in the screwed hole of cover plate 201 and screw-threaded engagement with it.
As shown in Fig. 2～Fig. 5, tuning screw 100 comprise with cover plate 201 on screwed hole adaptation head 106 and for tuning bar portion 107, the head 106 of tuning screw 100 comprises interconnective rigid portion 102 and elastic portion 101.Rigid portion 102 has the screw thread of preprocessing, described elastic portion 101 has when described tuning screw 100 is screwed into this cover plate 201 screwed hole, the external screw thread that screw thread in this screwed hole forms at described elastic portion 101 outer surface self tappings, rigid portion 102 is connected with the bar portion 107 of tuning screw 100, and elastic portion 102 is positioned at tuning screw 100 ends.In the present invention, this rigid portion 102 is one-body molded with the bar portion 107 of tuning screw 100, and the material of the bar portion 107 of this tuning screw 100 is also metal.
The present invention is when debugging, tuning screw 100 is driven into the tuning screwed hole on cover plate 201, screw thread on tuning screwed hole can go out external screw thread at the peripheral self tapping of elastic portion 101, make elastic portion 101 and the tight interlock of tuning screwed hole, and because the coefficient of friction of elastic portion 101 is much larger than metal, there is certain elasticity and rigidity, can make elastic portion 101 after tap out, block in screwed hole, be difficult for skidding, thereby make tuning screw 100 realize the function of self-locking anti-loosing, to replace locking nut and the outer serrated lock washer in traditional tuning screw assembly.The bar portion 107 of simultaneous tuning screw 100 keeps its tuber functions, but commissioning staff when debugging owing to removing the work of revolving locking nut and outer serrated lock washer of twisting from, debugging work just becomes more simply and easily operation, operating efficiency is greatly improved.
As shown in Figure 4,5, rigid portion 102 comprises the first end face 111 being connected with elastic portion 101, elastic portion 101 comprises the second end face 110 being connected with rigid portion 102, the first end face 111 of rigid portion 102 is provided with boss 103, forms the groove 104 coordinating with boss 103 on the second end face 110 of elastic portion 101.The lower edge indent of boss 103 forms draw-in groove 109, and groove 104 upper limb evaginations form bead 108, and draw-in groove 109 and bead 108 adaptations are to snap together rigid portion 102 and elastic portion 101.Thereby avoid between rigid portion 102 and elastic portion 101, departing from the use procedure of tuning screw 100.
In elastic portion 101 or rigid portion 102, be also provided with screwdriver accommodating groove 105, for receiving screwdriver and making tuning screw 100 rigid portion 102 screw in cavity body filter 200 inside according to the driving of this screwdriver.
Preferably, the boss 103 of rigid portion 102 is provided with for avoiding rigid portion 102 and elastic portion 101 position limiting structure in relative rotation.This position limiting structure is lug, nib, tab or the annular knurl that is formed at boss 103 sides.When tuning screw 100 is subject to the driving of screwdriver, this position limiting structure can avoid rigid portion 102 and elastic portion 101 to relatively rotate, and guarantees the reliability that rigid portion 102 is connected with elastic portion 101.
Preferably, rigid portion 102 adopts traditional metal material and processing mode machine-shaping, elastic portion 101 is by having rigidity and certain flexible nonmetal or metal material is made, preferential adopt nylon material or be the composite material of PE material and PP material, this bi-material is all flexible, and have certain rigidity, elasticity can guarantee the frictional force between elastic portion 101 and cover plate 201, realizes self-locking anti-loosing function; Rigidity can guarantee the validity being connected between elastic portion 101 and rigid portion 102, and screw thread self tapping in this elastic portion 101 of being also convenient to cover plate screwed hole simultaneously goes out external screw thread.PP material is because its material is more crisp, but rigidity and intensity are good, if use separately it as the material of elastic portion 101, can cause this elastic portion 101 that the situations such as fracture in use occur, and PE toughness of material is better, but rigidity and intensity is poor.Therefore in an embodiment of the present invention, preferentially adopt the composite material of PP material and PE material as the material of elastic portion 101, make it both there is suitable elasticity and rigidity.Also can adopt quality softer and have certain flexible metal as the material of elastic portion 101, concrete optional material is more simultaneously, not as the restriction of the present embodiment.
In an embodiment of the present invention, mode that can be by injection moulding is by directly machine-shaping in rigid portion 102 of nonmetallic materials, also can be first by after elastic portion 101 machine-shapings, by rigid portion 102 and elastic portion 101, the mode by external force links together again, for example, directly elastic portion 101 is crimped onto in this rigid portion 102.The molding mode of concrete elastic portion 101 can be selected multiple, not as the restriction of the present embodiment.
In the another kind of embodiment of cavity body filter of the present invention, as shown in Fig. 6 ~ 8, described cover plate 201 also comprises the lining 204 that is embedded in cover plate 201, lining 204 is hollow cylinder, hardness is large compared with cover plate 201, and its length is slightly long compared with cover plate 201, and lining 204 is fixed on cover plate 201 by a card holding structure, and on the axial direction of lining 204, form the screwed hole of cover plate 201, tuning screw head 106 is locked in the screwed hole of lining 204.As shown in Figure 8, the card holding structure of lining 204 is the annular groove 205 that is arranged at lining 204 outer surfaces, the ring that be provided with protrusion corresponding to annular groove 205 on cover plate 201.The design that this card holding structure is concavo-convex, can block cover plate 201, and lining 204 can be securely fixed on cover plate 201.Rounded or the polygon of lining 204 cross sections, in the course of processing, lining 204 is embedded in cover plate 201 by interference fit crimping, make cover plate 201 produce corresponding deformation, block lining 204, thereby avoid revolving in process stubborn at tuning screw 100, occur the phenomenon of lining 204 and cover plate 201 relative slidings.Lining 204 machine-shaping in advance, is then embedded in cover plate 201, and concrete structure as shown in Figure 6; Also can lining 204 and cover plate 201 is one-body molded to save manufacturing procedure and material, as shown in Figure 7.
Because lining 204 is through special processing, its screw thread is strengthened compared with original screw thread on cover plate 201, and the thickness of the Length Ratio cover plate 201 of lining 204 is slightly long, make tuning screw 100 when sealed, have sufficient contact area, thereby make tuning screw 100 interlock screw thread more securely, difficult drop-off or skid.
As shown in Fig. 1 ~ 3, the present invention is corresponding provides a kind of tuning screw 100, for cavity body filter 200, the cover plate 201 that cavity body filter 200 comprises cavity 203 and is covered in cavity 203, tuning screw 100 is driven into and is formed in the screwed hole of cover plate 201 and screw-threaded engagement with it, tuning screw 100 comprise with cover plate 201 on screwed hole adaptation head 106 and extend in cavity 203 for the tuning bar portion 107 of radio frequency parameter, the head 106 of tuning screw 100 comprises interconnective rigid portion 102 and elastic portion 101, rigid portion 102 has the screw thread of preprocessing, elastic portion 101 has when tuning screw 100 is screwed into this cover plate 201 screwed hole, the external screw thread that screw thread in this screwed hole forms at elastic portion 101 outer surface self tappings, rigid portion 102 is connected with the bar portion 107 of tuning screw 100, elastic portion 101 is positioned at tuning screw 100 ends.The concrete structure of this tuning screw 100 and cavity body filter 200 is described in detail above, therefore do not repeat them here.
The present invention also provides another kind of execution mode, and as shown in Figure 9, the elastic portion 101 of tuning screw 100 is connected with the bar portion 107 of tuning screw 100, and rigid portion 102 is positioned at the end of tuning screw 100, and the diameter of rigid portion 102 is greater than the diameter of elastic portion 101.
For coordinating tuning screw 100 as shown in Figure 9, correspondingly cover plate screwed hole is improved, as shown in figure 10, cover plate screwed hole 208 comprises the first 206 adaptive with rigid portion 102 sizes and the second portion 207 adaptive with elastic portion 1001 sizes.
When the present embodiment is debugged, when tuning screw 100 enters cover plate screwed hole 208, its bar portion 107 and elastic portion 101 can easily be passed through the first 206 of screwed hole, and bar portion 107 can also easily pass through second portion 207.Rigid portion 102, when contact first 206, starts to twist and revolve, but now elastic portion 101 does not contact second portion 207; And be screwed into certain position to rigid portion 102, elastic portion 101 starts to contact second portion 207, screw thread on second portion 207 starts elastic portion 101 to carry out tapping, when elastic portion 101 is screwed into the certain position of second portion 207, because the coefficient of friction of elastic portion 101 is large, closely screw togather with the screw thread on second portion 207, thereby make tuning screw 100 realize the function of self-locking anti-loosing.Concrete principle has a detailed description above, repeats no more herein.
The present invention also provides a kind of Self-locking screw, for being driven into, be formed in the screwed hole of metal parts and screw-threaded engagement with it, Self-locking screw comprises interconnective rigid portion and elastic portion, rigid portion has the screw thread of preprocessing, elastic portion has when Self-locking screw is screwed into metal component screwed hole, the external screw thread that the screw thread in this screwed hole forms at elastic portion outer surface self tapping.Rigid portion comprises the first end face being connected with elastic portion, and elastic portion comprises the second end face being connected with rigid portion, and the first end face of rigid portion is provided with boss, forms the groove coordinating with boss on the second end face of elastic portion; The lower edge indent of boss forms draw-in groove, and groove upper limb evagination forms bead, and draw-in groove and bead adaptation are to snap together rigid portion and elastic portion; Self-locking screw is driven into the screwed hole on metal parts, self-tapping screw on screwed hole can go out external screw thread by the peripheral self tapping of elastic portion, make the tight interlock of elastic portion and screwed hole, and because the coefficient of friction of elastic portion is much larger than metal, there is certain elasticity and rigidity, can make elastic portion after tap out, block in screwed hole, be difficult for skidding, thereby make screw realize the function of self-locking anti-loosing.
In sum, the present invention is when debugging, tuning screw is driven into the tuning screwed hole on cover plate, metal threaded meeting on tuning screwed hole goes out external screw thread at the peripheral self tapping of elastic portion, make elastic portion and the tight interlock of tuning screwed hole, and because the coefficient of friction of elastic portion is much larger than metal, there is certain elasticity and rigidity, can make elastic portion after tap out, block in screwed hole, make to be difficult for skidding between the screwed hole on tuning screw and cover plate, thereby make tuning screw realize the function of self-locking anti-loosing, to replace locking nut and the outer serrated lock washer in traditional tuning screw assembly.The bar portion of simultaneous tuning screw keeps its tuber function, but commissioning staff in when debugging owing to removing the work of revolving locking nut and outer serrated lock washer of twisting from, debugging work just becomes more simply and easily operation, operating efficiency is greatly improved.And tuning screw of the present invention is only comprised of parts, and elastic portion cost is low, therefore saved rapidoprint, reduced production cost
In this specification, applied specific case principle of the present invention and execution mode are set forth, the explanation of above embodiment is just understood method of the present invention and core concept thereof for helping, and this description should not be construed as limitation of the present invention.
Claims (23)
1. a cavity body filter, comprising:
Cavity;
Cover plate, is covered on described cavity;
Tuning screw, through described cover plate extending in described cavity, described tuning screw comprise with described cover plate on screwed hole adaptation head and extend in cavity for the tuning bar portion of radio frequency parameter,
It is characterized in that, the head of described tuning screw comprises interconnective rigid portion and elastic portion, described rigid portion has the screw thread of preprocessing, described elastic portion has when described tuning screw is screwed into this cover plate screwed hole, the external screw thread that the screw thread in this screwed hole forms at described elastic portion outer surface self tapping.
2. cavity body filter according to claim 1, is characterized in that, described rigid portion is connected with the bar portion of described tuning screw, and described elastic portion is positioned at the end of described tuning screw.
3. cavity body filter according to claim 1, is characterized in that, described elastic portion is connected with the bar portion of described tuning screw, and described rigid portion is positioned at the end of described tuning screw, and the diameter of described rigid portion is greater than the diameter of described elastic portion; Described cover plate screwed hole comprises the first adaptive with described rigid portion size and the second portion adaptive with described elastic portion size.
4. cavity body filter according to claim 1, it is characterized in that, described rigid portion comprises the first end face being connected with described elastic portion, described elastic portion comprises the second end face being connected with rigid portion, the first end face of described rigid portion is provided with boss, forms the groove coordinating with described boss on the second end face of described elastic portion;
The lower edge indent of described boss forms draw-in groove, and described groove upper limb evagination forms bead, and described draw-in groove and described bead adaptation are to snap together described rigid portion and described elastic portion.
5. cavity body filter according to claim 4, is characterized in that, the boss of described rigid portion is provided with for avoiding rigid portion and described elastic portion position limiting structure in relative rotation.
6. cavity body filter according to claim 5, is characterized in that, described position limiting structure is lug, nib, tab or the annular knurl that is formed at described boss side surfaces.
7. cavity body filter according to claim 1, is characterized in that, described rigid portion and described elastic portion are by crimping moulding or the directly injection mo(u)lding in described rigid portion of described elastic portion.
8. cavity body filter according to claim 1, is characterized in that, described elastic portion is nylon material or is the composite material of PE material and PP material.
9. cavity body filter according to claim 1, is characterized in that, on the screwed hole of described cover plate, is provided with self-tapping screw with described elastic portion corresponding part.
10. cavity body filter according to claim 1, it is characterized in that, described cover plate also comprises the lining that is embedded in described cover plate, described lining is hollow cylinder, described lining is fixed on described cover plate by a card holding structure, and on the axial direction of described lining, form the screwed hole of described cover plate, tuning screw head is locked in the screwed hole of described lining.
11. cavity body filters according to claim 10, is characterized in that, the card holding structure of described lining is the annular groove that is arranged at described sleeve outer surface, the ring that be provided with protrusion corresponding to described annular groove on described cover plate.
12. cavity body filters according to claim 10, is characterized in that, the rounded or polygon of described lining cross section.
13. cavity body filters according to claim 10, is characterized in that, described lining and described cover plate are one-body molded.
14. cavity body filters according to claim 1, is characterized in that, in described elastic portion or described rigid portion, are provided with screwdriver accommodating groove.
15. 1 kinds of tuning screws, for cavity body filter, cavity body filter comprises cavity; Cover plate, is covered on described cavity; Tuning screw, through described cover plate extending in described cavity, described tuning screw comprise with described cover plate on screwed hole adaptation head and extend in cavity for the tuning bar portion of radio frequency parameter,
It is characterized in that, the head of described tuning screw comprises interconnective rigid portion and elastic portion, described rigid portion has the screw thread of preprocessing, described elastic portion has when described tuning screw is screwed into this cover plate screwed hole, the external screw thread that the screw thread in this screwed hole forms at described elastic portion outer surface self tapping.
16. tuning screws according to claim 15, it is characterized in that, described rigid portion comprises the first end face being connected with described elastic portion, described elastic portion comprises the second end face being connected with rigid portion, the first end face of described rigid portion is provided with boss, forms the groove coordinating with described boss on the second end face of described elastic portion;
The lower edge indent of described boss forms draw-in groove, and described groove upper limb evagination forms bead, and described draw-in groove and described bead adaptation are to snap together described rigid portion and described elastic portion.
17. tuning screws according to claim 16, is characterized in that, the boss of described rigid portion is provided with for avoiding rigid portion and described elastic portion position limiting structure in relative rotation.
18. tuning screws according to claim 17, is characterized in that, described position limiting structure is lug, nib, tab or the annular knurl that is formed at described boss side surfaces.
19. tuning screws according to claim 15, is characterized in that, described rigid portion and described elastic portion are by crimping moulding or the directly injection mo(u)lding in described rigid portion of described elastic portion.
20. tuning screws according to claim 15, is characterized in that, described elastic portion is nylon material or is the composite material of PE material and PP material.
21. tuning screws according to claim 15, is characterized in that, are provided with screwdriver accommodating groove in described elastic portion or rigid portion.
22. 1 kinds of Self-locking screws, for being driven into, be formed in the screwed hole of metal parts and screw-threaded engagement with it, it is characterized in that, described Self-locking screw comprises interconnective rigid portion and elastic portion, described rigid portion has the screw thread of preprocessing, described elastic portion has when described Self-locking screw is screwed into metal component screwed hole, the external screw thread that the screw thread in this screwed hole forms at described elastic portion outer surface self tapping.
23. Self-locking screws according to claim 22, it is characterized in that, described rigid portion comprises the first end face being connected with described elastic portion, described elastic portion comprises the second end face being connected with rigid portion, the first end face of described rigid portion is provided with boss, forms the groove coordinating with described boss on the second end face of described elastic portion;
The lower edge indent of described boss forms draw-in groove, and described groove upper limb evagination forms bead, and described draw-in groove and described bead adaptation are to snap together described rigid portion and described elastic portion.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210338662.0A CN103682536B (en) | 2012-09-13 | 2012-09-13 | A kind of cavity body filter, tuning screw and Self-locking screw |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210338662.0A CN103682536B (en) | 2012-09-13 | 2012-09-13 | A kind of cavity body filter, tuning screw and Self-locking screw |
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| CN103682536A true CN103682536A (en) | 2014-03-26 |
| CN103682536B CN103682536B (en) | 2015-12-23 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105304990A (en) * | 2015-11-18 | 2016-02-03 | 强胜精密机械(苏州)有限公司 | Tuning self-locking bolt |
| CN105322255A (en) * | 2015-11-17 | 2016-02-10 | 强胜精密机械(苏州)有限公司 | Tuning self-locking bolt |
| WO2016106707A1 (en) * | 2014-12-31 | 2016-07-07 | 深圳市大富科技股份有限公司 | Tuning screw and manufacturing method therefor, cavity filter, and communication device |
| CN106848502A (en) * | 2017-03-06 | 2017-06-13 | 广东通宇通讯股份有限公司 | Wave filter and its coupling structure of filter and coupling screws |
| CN112670683A (en) * | 2019-10-15 | 2021-04-16 | 深圳市大富科技股份有限公司 | Cavity filter, cover plate thereof and communication equipment |
| US11196136B2 (en) | 2017-12-29 | 2021-12-07 | Huawei Technologies Co., Ltd. | Cavity filter |
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| CN101315999A (en) * | 2008-06-27 | 2008-12-03 | 华为技术有限公司 | Screw device and cavity filter using the same |
| CN102509819A (en) * | 2011-10-31 | 2012-06-20 | 深圳市大富科技股份有限公司 | Dielectric filter, locking nut, tuning device and communication radio-frequency apparatus |
| CN202839919U (en) * | 2012-09-13 | 2013-03-27 | 深圳市大富科技股份有限公司 | Cavity filter, tuning screw and self-locking screw |
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| CN105322255A (en) * | 2015-11-17 | 2016-02-10 | 强胜精密机械(苏州)有限公司 | Tuning self-locking bolt |
| CN105322255B (en) * | 2015-11-17 | 2018-05-11 | 强胜精密机械(苏州)有限公司 | One kind tuning Self-locking screw |
| CN105304990A (en) * | 2015-11-18 | 2016-02-03 | 强胜精密机械(苏州)有限公司 | Tuning self-locking bolt |
| CN105304990B (en) * | 2015-11-18 | 2018-05-11 | 强胜精密机械(苏州)有限公司 | One kind tuning Self-locking screw |
| CN106848502A (en) * | 2017-03-06 | 2017-06-13 | 广东通宇通讯股份有限公司 | Wave filter and its coupling structure of filter and coupling screws |
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