CN202839919U - Cavity filter, tuning screw and self-locking screw - Google Patents

Cavity filter, tuning screw and self-locking screw Download PDF

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Publication number
CN202839919U
CN202839919U CN 201220466457 CN201220466457U CN202839919U CN 202839919 U CN202839919 U CN 202839919U CN 201220466457 CN201220466457 CN 201220466457 CN 201220466457 U CN201220466457 U CN 201220466457U CN 202839919 U CN202839919 U CN 202839919U
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CN
China
Prior art keywords
elastic portion
rigid portion
screw
cover plate
tuning screw
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Withdrawn - After Issue
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CN 201220466457
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Chinese (zh)
Inventor
吴纯虎
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Shenzhen Tatfook Technology Co Ltd
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Shenzhen Tatfook Technology Co Ltd
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Priority to CN 201220466457 priority Critical patent/CN202839919U/en
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Publication of CN202839919U publication Critical patent/CN202839919U/en
Withdrawn - After Issue legal-status Critical Current
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Abstract

The utility model relates to the field of communication devices, and especially relates to a cavity filter, a tuning screw and a self-locking screw. The cavity filter comprises a cavity, a cover plate which covers the cavity, a tuning screw which is driven into a threaded hole formed in the cover plate and is engaged with the threads, and a self-locking screw which is driven into a threaded hole formed in a metal component and is engaged with the threads. Each of the tuning screw and the self-locking screw comprises a rigid portion and an elastic portion, wherein the rigid portion is equipped with preprocessed threads, and the elastic portion is equipped with outer threads formed by self-tapping on an outer surface of the elastic portion by threads in the threaded hole when a screw is screwed into the threaded hole; the elastic portion or the rigid portion is provided with a screwdriver accommodation groove; ad when the screw is locked in the metal component, outer threads is formed by self-tapping in the elastic portion by the threads of the metal component. The cavity filter, the tuning screw and the self-locking screw can realize self-locking of the screw, can help to improve production efficiency and reduce production cost, and at the same time, can help to improve precision in radio frequency debugging and enhance overall performance of the cavity filter.

Description

A kind of cavity body filter, tuning screw and Self-locking screw
Technical field
The utility model relates to domain of communication equipment, relates in particular to a kind of cavity body filter, tuning screw and Self-locking screw.
Background technology
At the communication field in modern times, cavity body filter has become an important ring of wireless telecommunications, and existing cavity body filter generally partly is 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 purpose 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.Based on traditional tactic pattern, cavity body filter need be established specially an independent operation and be responsible on the cover board wearing locking nut and outer serrated lock washer when actual production, after finishing this operation, product just flows to the 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 process of production in existing tuning screw and cavity body filter, need to seek a kind of simpler and effective scheme solves the problems referred to above.
The utility model content
The problem that exists for solving prior art, the utility model provides a kind of cavity body filter, tuning screw and Self-locking screw, and it can realize the screw self-locking, enhances productivity, and can improve the radio frequency adjustment accuracy simultaneously, promotes the cavity body filter overall performance.
For achieving the above object, the utility model provides a kind of cavity body filter, comprising:
Cavity; Cover plate is covered on the described cavity; Tuning screw, pass described cover plate and extend in the described cavity, described tuning screw comprise with described cover plate on the adaptive head of screwed hole and extend into and be used for the tuning bar section of radio frequency parameter in the cavity, 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 section of described tuning screw, and described elastic portion is positioned at the end of described tuning screw.
According to cavity body filter described in the utility model, in another embodiment, described elastic portion is connected with the bar section 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 and the big or small adaptive first of described rigid portion and the second portion adaptive with described elastic portion size.
According to cavity body filter described in the utility model, described rigid portion comprises the first end face that is connected with described elastic portion, described elastic portion comprises the second end face that is connected with rigid portion, the first end face of described rigid portion is provided with boss, forms the groove that cooperates 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 are adaptive so that described rigid portion and described elastic portion are snapped together.
According to cavity body filter described in the utility model, the boss of described rigid portion is provided be used to avoiding in relative rotation position limiting structure of rigid portion and described elastic portion.
According to cavity body filter described in the utility model, 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 described in the utility model, described rigid portion and described elastic portion are by crimping moulding or the directly injection mo(u)lding on described rigid portion of described elastic portion.
According to cavity body filter described in the utility model, described elastic portion is nylon material or is the composite material of PE material and PP material.Perhaps adopt other quality softer and have flexible metal material, for example copper.
According to cavity body filter described in the utility model, be provided with self-tapping screw with described elastic portion counterpart on the screwed hole of described cover plate.
According to cavity body filter described in the utility model, be provided with the screwdriver accommodating groove on described elastic portion or the described rigid portion.
The utility model is corresponding to provide a kind of tuning screw, be used 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 the described cavity, described tuning screw comprise with described cover plate on the adaptive head of screwed hole and extend into and be used for the tuning bar section of radio frequency parameter in the cavity, 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; Described rigid portion is connected with the bar section 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 described in the utility model, described rigid portion comprises the first end face that is connected with described elastic portion, described elastic portion comprises the second end face that is connected with rigid portion, the first end face of described rigid portion is provided with boss, forms the groove that cooperates 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 are adaptive so that described rigid portion and described elastic portion are snapped together.
According to tuning screw described in the utility model, the boss of described rigid portion is provided be used to avoiding in relative rotation position limiting structure of rigid portion and described elastic portion.
According to tuning screw described in the utility model, described position limiting structure is lug, nib, tab or the annular knurl that is formed at described boss side surfaces.
According to tuning screw described in the utility model, described rigid portion and described elastic portion are by crimping moulding or the directly injection mo(u)lding on described rigid portion of described elastic portion.
According to tuning screw described in the utility model, described elastic portion is nylon material or is the composite material of PE material and PP material.Perhaps adopt other quality softer and have flexible metal material, for example copper.
According to tuning screw described in the utility model, also be provided with the screwdriver accommodating groove on described elastic portion or the rigid portion.
The utility model also provides a kind of Self-locking screw, be used for being driven in the screwed hole that is formed on 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 described in the utility model, described rigid portion comprises the first end face that is connected with described elastic portion, described elastic portion comprises the second end face that is connected with rigid portion, the first end face of described rigid portion is provided with boss, forms the groove that cooperates 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 are adaptive so that described rigid portion and described elastic portion are snapped together.
The utility model is by after driving the tuning screwed hole that enters on the cover plate with tuning screw, metal threaded meeting on the tuning screwed hole goes out external screw thread at the peripheral self tapping of elastic portion, so that elastic portion and the tight interlock of tuning screwed hole, and because the coefficient of friction of elastic portion is much larger than metal, have certain elasticity and rigidity, elastic portion is being blocked behind the tap out in screwed hole, so that be difficult for skidding between the screwed hole on tuning screw and the 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 section of simultaneous tuning screw keeps its radio frequency parameter tuber function, but the commissioning staff in when debugging owing to remove the work of revolving locking nut and outer serrated lock washer of twisting from, debugging work just becomes more simple and easily operation, operating efficiency is greatly improved.And tuning screw of the present utility model only is comprised of parts, and the elastic portion cost is low, has therefore saved rapidoprint, has reduced production cost.
Description of drawings
Fig. 1 is the schematic diagram of the cross-section structure of a kind of embodiment of the utility model cavity body filter;
Fig. 2 is the stereogram of a kind of embodiment of the utility model tuning screw;
Fig. 3 is the profile of a kind of embodiment of the utility model tuning screw;
Fig. 4 is the cutaway view of a kind of embodiment of the utility model tuning screw elastic portion;
Fig. 5 is the cutaway view of a kind of embodiment of the utility model tuning screw rigid portion;
Fig. 6 is the schematic diagram of the cross-section structure of the another kind of embodiment of the utility model cavity body filter;
Fig. 7 is the schematic diagram of the cross-section structure of another embodiment of the utility model cavity body filter;
Fig. 8 is the stereogram of a kind of embodiment of lining of the utility model cavity body filter;
Fig. 9 is the schematic diagram of the section of the another kind of embodiment of the utility model tuning screw;
Figure 10 is the cutaway view of a kind of embodiment of cover plate screwed hole of cooperating with tuning screw among Fig. 9.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described.Specific embodiment described herein is only in order to explaining the utility model, and is not used in restriction the utility model.
As shown in Figure 1, a kind of cavity body filter 200 of the utility model comprises that cavity 203, cover plate 201 and tuning screw 100, cover plate 201 are covered on the cavity 203; Tuning screw 100 is driven in the screwed hole that is formed on cover plate 201 and screw-threaded engagement with it.
Such as Fig. 2~shown in Figure 5, tuning screw 100 comprise with cover plate 201 on the adaptive head 106 of screwed hole and be used for tuning bar section 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 section 107 of tuning screw 100, and elastic portion 102 is positioned at tuning screw 100 ends.In the utility model, this rigid portion 102 is one-body molded with the bar section 107 of tuning screw 100, and the material of the bar section 107 of this tuning screw 100 also is metal.
The utility model is when debugging, after tuning screw 100 driven the tuning screwed hole that enters on the cover plate 201, screw thread on the tuning screwed hole can go out external screw thread at elastic portion 101 peripheral self tappings, so that 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, have certain elasticity and rigidity, elastic portion 101 is being blocked behind the tap out 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 section 107 of simultaneous tuning screw 100 keeps its tuber functions, but the commissioning staff when debugging owing to remove the work of revolving locking nut and outer serrated lock washer of twisting from, debugging work just becomes more simple and easily operation, operating efficiency is greatly improved.
Shown in Fig. 4,5, rigid portion 102 comprises the first end face 111 that is connected with elastic portion 101, elastic portion 101 comprises the second end face 110 that is connected with rigid portion 102, the first end face 111 of rigid portion 102 is provided with boss 103, forms the groove 104 that cooperates 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 is adaptive so that rigid portion 102 and elastic portion 101 are snapped together with bead 108.Thereby avoid in the use procedure of tuning screw 100, breaking away between the rigid portion 102 and elastic portion 101.
Also be provided with screwdriver accommodating groove 105 on elastic portion 101 or the rigid portion 102, be used for admit screwdriver and make tuning screw 100 rigid portion 102 screw in cavity body filters 200 inside according to the driving of this screwdriver.
Preferably, the boss 103 of rigid portion 102 is provided be used to avoiding in relative rotation position limiting structure of rigid portion 102 and elastic portion 101.This position limiting structure is lug, nib, tab or the annular knurl that is formed at boss 103 sides.When tuning screw 100 was subject to the driving of screwdriver, this position limiting structure can avoid rigid portion 102 and elastic portion 101 to relatively rotate, and guaranteed that rigid portion 102 is connected the reliability that connects with elastic portion.
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 the cover plate 201, realizes the self-locking anti-loosing function; Rigidity can guarantee the validity that is connected between elastic portion 101 and the rigid portion 102, and screw thread self tapping on this elastic portion 101 of also being convenient to the cover plate screwed hole simultaneously goes out external screw thread.The 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 the in use situation such as fracture of this elastic portion 101, and the PE toughness of material is better, but rigidity and intensity is relatively poor.Therefore in embodiment of the present utility model, preferentially adopt the composite material of PP material and PE material as the material of elastic portion 101, make it both have suitable elasticity and rigidity.Also can adopt simultaneously quality softer and have certain flexible metal as the material of elastic portion 101, concrete optional material is more, not as the restriction of present embodiment.
In embodiment of the present utility model, mode that can be by injection moulding is with directly machine-shaping on rigid portion 102 of nonmetallic materials, also can be first with after elastic portion 101 machine-shapings, again rigid portion 102 and elastic portion 101 mode by external force is linked together, for example directly elastic portion 101 is crimped onto on this rigid portion 102.The molding mode of concrete elastic portion 101 can be selected multiple, not as the restriction of present embodiment.
In the another kind of embodiment of the utility model cavity body filter, 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 than cover plate 201, and its length is slightly long than cover plate 201, and lining 204 is fixed on the cover plate 201 by a card holding structure, and form the screwed hole of cover plate 201 at the axial direction of lining 204, 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, on the cover plate 201 with the annular groove 205 corresponding rings that are provided with protrusion.The design that this card holding structure is concavo-convex can be blocked cover plate 201, so that lining 204 can be securely fixed on the cover plate 201.Rounded or the polygon of lining 204 cross sections, in the course of processing, lining 204 is embedded in the cover plate 201 by the interference fit crimping, so that cover plate 201 produces corresponding deformation, block lining 204, thereby avoid revolving in the process stubborn at tuning screw 100, the phenomenon of lining 204 and cover plate 201 relative slidings occurs.Then in advance machine-shaping of lining 204 be embedded in the cover plate 201, and concrete structure as shown in Figure 6; Also can lining 204 is one-body molded to save manufacturing procedure and material, as shown in Figure 7 with cover plate 201.
Because lining 204 is through special processing, its screw thread is strengthened than original screw thread on the cover plate 201, and the thickness of the Length Ratio cover plate 201 of lining 204 is slightly long, so that tuning screw 100 has sufficient contact area when sealed, thereby so that tuning screw 100 interlock screw thread more securely, difficult drop-off or skid.
Shown in Fig. 1 ~ 3, the utility model is corresponding to provide a kind of tuning screw 100, be used 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 in the screwed hole that is formed on cover plate 201 and screw-threaded engagement with it, tuning screw 100 comprise with cover plate 201 on the adaptive head 106 of screwed hole and extend into and be used for the tuning bar sections 107 of radio frequency parameter in the cavity 203, 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 section 107 of tuning screw 100, and elastic portion 101 is positioned at tuning screw 100 ends.The concrete structure of this tuning screw 100 and cavity body filter 200 above is being described in detail, so do not repeat them here.
The utility model 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 section 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 cooperating tuning screw 100 as shown in Figure 9, correspondingly the cover plate screwed hole is improved, as shown in figure 10, cover plate screwed hole 208 comprises and rigid portion 102 big or small adaptive firsts 206 and the second portions 207 adaptive with elastic portion 1001 sizes.
When present embodiment was debugged, when tuning screw 100 entered cover plate screwed hole 208, its bar section 107 and elastic portion 101 can be easily by the firsts 206 of screwed hole, and bar section 107 can also easily pass through second portion 207.Rigid portion 102 began to twist and revolve, but elastic portion 101 did not contact second portion 207 this moment when contact first 206; And be screwed into certain position to rigid portion 102, elastic portion 101 begins to contact second portion 207, screw thread on the second portion 207 begins elastic portion 101 is carried 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 the second portion 207, thereby so that tuning screw 100 is realized the function of self-locking anti-loosing.Concrete principle is above having a detailed description, repeats no more herein.
The utility model also provides a kind of Self-locking screw, be used for being driven in the screwed hole that is formed on 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 that is connected with elastic portion, and elastic portion comprises the second end face that is connected with rigid portion, and the first end face of rigid portion is provided with boss, forms the groove that cooperates 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 are adaptive so that rigid portion and elastic portion are snapped together; After Self-locking screw driven the screwed hole enter on the metal parts, self-tapping screw on the screwed hole can go out external screw thread with the peripheral self tapping of elastic portion, so that the tight interlock of elastic portion and screwed hole, and because the coefficient of friction of elastic portion is much larger than metal, have certain elasticity and rigidity, elastic portion is being blocked behind the tap out in screwed hole, be difficult for skidding, thereby make screw realize the function of self-locking anti-loosing.
In sum, the utility model is when debugging, after tuning screw driven the tuning screwed hole enter on the cover plate, metal threaded meeting on the tuning screwed hole goes out external screw thread at the peripheral self tapping of elastic portion, so that elastic portion and the tight interlock of tuning screwed hole, and because the coefficient of friction of elastic portion is much larger than metal, have certain elasticity and rigidity, elastic portion is being blocked behind the tap out in screwed hole, so that be difficult for skidding between the screwed hole on tuning screw and the 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 section of simultaneous tuning screw keeps its tuber function, but the commissioning staff in when debugging owing to remove the work of revolving locking nut and outer serrated lock washer of twisting from, debugging work just becomes more simple and easily operation, operating efficiency is greatly improved.And tuning screw of the present utility model only is comprised of parts, and the elastic portion cost is low, has therefore saved rapidoprint, has reduced production cost
Having used specific case in this specification sets forth principle of the present utility model and execution mode, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof, and this description should not be construed as restriction of the present utility model.

Claims (23)

1. cavity body filter comprises:
Cavity;
Cover plate is covered on the described cavity;
Tuning screw passes described cover plate and extend in the described cavity, described tuning screw comprise with described cover plate on the adaptive head of screwed hole and extend into and be used for the tuning bar section of radio frequency parameter in the cavity,
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 section 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 section 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 and the big or small adaptive first of described rigid portion 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 that is connected with described elastic portion, described elastic portion comprises the second end face that is connected with rigid portion, the first end face of described rigid portion is provided with boss, forms the groove that cooperates 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 are adaptive so that described rigid portion and described elastic portion are snapped together.
5. cavity body filter according to claim 4 is characterized in that, the boss of described rigid portion is provided be used to avoiding in relative rotation position limiting structure of rigid portion and described elastic portion.
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 on 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, is provided with self-tapping screw with described elastic portion counterpart on the screwed hole of described cover plate.
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 the described cover plate by a card holding structure, and form the screwed hole of described cover plate on the axial direction of described lining, the tuning screw head is locked in the screwed hole of described lining.
11. cavity body filter 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 corresponding ring that is provided with protrusion with described annular groove on the described cover plate.
12. cavity body filter according to claim 10 is characterized in that, the rounded or polygon of described lining cross section.
13. cavity body filter according to claim 10 is characterized in that, described lining and described cover plate are one-body molded.
14. cavity body filter according to claim 1 is characterized in that, is provided with the screwdriver accommodating groove on described elastic portion or the described rigid portion.
15. a tuning screw is used for cavity body filter, cavity body filter comprises cavity; Cover plate is covered on the described cavity; Tuning screw passes described cover plate and extend in the described cavity, described tuning screw comprise with described cover plate on the adaptive head of screwed hole and extend into and be used for the tuning bar section of radio frequency parameter in the cavity,
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 screw according to claim 15, it is characterized in that, described rigid portion comprises the first end face that is connected with described elastic portion, described elastic portion comprises the second end face that is connected with rigid portion, the first end face of described rigid portion is provided with boss, forms the groove that cooperates 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 are adaptive so that described rigid portion and described elastic portion are snapped together.
17. tuning screw according to claim 16 is characterized in that, the boss of described rigid portion is provided be used to avoiding in relative rotation position limiting structure of rigid portion and described elastic portion.
18. tuning screw 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 screw 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 on described rigid portion of described elastic portion.
20. tuning screw 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 screw according to claim 15 is characterized in that, is provided with the screwdriver accommodating groove on described elastic portion or the rigid portion.
22. Self-locking screw, be used for being driven in the screwed hole that is formed on 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 screw according to claim 22, it is characterized in that, described rigid portion comprises the first end face that is connected with described elastic portion, described elastic portion comprises the second end face that is connected with rigid portion, the first end face of described rigid portion is provided with boss, forms the groove that cooperates 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 are adaptive so that described rigid portion and described elastic portion are snapped together.
CN 201220466457 2012-09-13 2012-09-13 Cavity filter, tuning screw and self-locking screw Withdrawn - After Issue CN202839919U (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103682536A (en) * 2012-09-13 2014-03-26 深圳市大富科技股份有限公司 Cavity filter, tuning screw and self-locking screw
CN103887580A (en) * 2014-03-07 2014-06-25 深圳三星通信技术研究有限公司 Cavity filter and tuning screw thereof
CN104377419A (en) * 2013-08-14 2015-02-25 台扬科技股份有限公司 Microwave resonant cavity
GB2530869A (en) * 2014-10-02 2016-04-06 Global Invacom Ltd Frequency tuning assembly
CN105563019A (en) * 2015-11-18 2016-05-11 强胜精密机械(苏州)有限公司 Manufacturing method of tuning self-locking screw
CN108281741A (en) * 2017-12-18 2018-07-13 西安空间无线电技术研究所 A kind of TE01 mould dielectric filters being easily worked debugging

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103682536A (en) * 2012-09-13 2014-03-26 深圳市大富科技股份有限公司 Cavity filter, tuning screw and self-locking screw
CN103682536B (en) * 2012-09-13 2015-12-23 深圳市大富科技股份有限公司 A kind of cavity body filter, tuning screw and Self-locking screw
CN104377419A (en) * 2013-08-14 2015-02-25 台扬科技股份有限公司 Microwave resonant cavity
CN103887580A (en) * 2014-03-07 2014-06-25 深圳三星通信技术研究有限公司 Cavity filter and tuning screw thereof
CN103887580B (en) * 2014-03-07 2019-01-01 深圳三星通信技术研究有限公司 A kind of cavity body filter and its tuning screw
GB2530869A (en) * 2014-10-02 2016-04-06 Global Invacom Ltd Frequency tuning assembly
CN105563019A (en) * 2015-11-18 2016-05-11 强胜精密机械(苏州)有限公司 Manufacturing method of tuning self-locking screw
CN108281741A (en) * 2017-12-18 2018-07-13 西安空间无线电技术研究所 A kind of TE01 mould dielectric filters being easily worked debugging
CN108281741B (en) * 2017-12-18 2020-06-09 西安空间无线电技术研究所 TE01 mould dielectric filter of easy processing debugging

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