CN207338596U - Double coaxial combiners of loading - Google Patents

Abstract

The utility model discloses a kind of double coaxial combiners of loading, including cavity, the cover board and load plate covered on cavity, a shielding space is formed between cover board and cavity, load plate is loaded into cavity, the shielding space is divided into two parts up and down, connection is welded and fixed between load plate and cavity, or coordinates fixed structure to connect with screw rod by welding.The utility model significantly reduces the resonant frequency of coaxial combiner；And welding fixing is more stablized firm, is not easy to loosen, and saves cavity space, makes the uniformity of load plate and flatness more preferable, in addition also easily assembling, easy to operate, saves man-hour.

Description

Double coaxial combiners of loading

Technical field

Coaxial combiner field is the utility model is related to, it is same more particularly, to a kind of double loadings that can reduce resonant frequency Axis combiner.

Background technology

In the radio circuit of passive device, low frequency combiner is small in order to meet, the excellent demand of performance, coaxial combining Device is a kind of preferred solution.

The relevant prior art of the utility model refers to Chinese utility model patent notification number and is taken off for CN205385101U A kind of combiner of dew, the combiner include cavity, the cover board being covered on cavity, are integrally formed with cavity and are contained in cavity Interior some resonant columns, but such cavity, magnetic-coupled space is larger, and frequency will become higher.

A kind of frequency band combiner is disclosed in patent CN201020247969.6, as shown in Figure 1, the combiner discloses Banding filter band is carried in cavity, but banding filter band is all to be held by screw with cavity, and such fixed form is held Easily loosen, assembling process complicated and time consumption, and screw is fixed and make it that gap is larger, poor-performing, strip line filter plate Overall flatness can also be deteriorated, and also have screw easily to loosen the performance for influencing product.

It is therefore necessary to design a kind of new combiner, it is reduced with respect to resonant frequency and structure is more stablized.

Utility model content

The purpose of the utility model is to overcome the defects of the prior art, there is provided one kind reduces resonant frequency, structure more The firm coaxial combiner of double loadings.

To achieve the above object, the utility model proposes following technical solution：A kind of double coaxial combiners of loading, including chamber Body, the cover board covered on cavity, the out splice going splice on some the first screws and cavity for holding cavity and cover board and input connect Head, forms a shielding space between the cover board and cavity, double coaxial combiners of loading, which further include, is loaded into the cavity The shielding space is divided into two parts up and down by interior load plate, the load plate.

Preferably, the cavity further includes multiple with the integrally formed resonant column of cavity, each resonant column include cylinder and Loading disk body on cylinder, the loading disc body is between the load plate and cover board.

Preferably, multiple steps less than cavity upper surface are equipped with the cavity, the load plate is carried on described On rank, and it is weldingly connected between step.

Preferably, double coaxial combiners of loading further include some second screws, lead between the load plate and step Cross welding and connected with the structure that the second screw fit is fixed.

Preferably, the load plate horizontal bearing on step with cover board in being arranged in parallel.

Preferably, the step extends to form in direction from the inner wall of cavity into cavity.

Preferably, the middle part of the cavity is formed with the multiple and spaced step of cavity inner wall.

Preferably, on the step formed with holding hole, in the load plate formed with holding hole it is corresponding, for The first perforation that two screws pass through, second screw are immobilizated in holding hole through the first perforation, and load plate is immobilizated in platform On rank.

Preferably, the out splice going splice is located at the same side of cavity with input adapter.

Preferably, the out splice going splice is between two input adapters, and with two input adapter interval equidistances.

Preferably, it is also equipped with the cover board and the corresponding tuning screw of resonant column in cavity.

The beneficial effects of the utility model are：

1st, increase by a load plate between the resonant column and cover board of coaxial combiner, reduce the magnetic-coupled sky in cavity Between, significantly reduce the resonant frequency of coaxial combiner；And cavity is divided into two parts up and down by load plate, after forming upper and lower cavity More preferably, decay is low for shield effectiveness.

2nd, closely it is connected with the matched fixed structure of screw rod using welding or welding between load plate and cover board, it is and existing Pure screw-rod structure fixed form is compared, and it is firm that welding fixing is more stablized, and is not easy to loosen, and saves cavity space, makes load plate Uniformity and flatness it is more preferable, in addition also easily assembling, it is easy to operate, save man-hour.

Brief description of the drawings

Fig. 1 is the structure diagram of prior art；

Fig. 2 is the schematic perspective view after the utility model assembling；

Fig. 3 is the schematic perspective view after the assembling of the utility model load plate；

Fig. 4 is the exploded perspective view of the utility model.

Reference numeral：

1st, cavity, 11, input adapter, 12, out splice going splice, the 13, second holding hole, 2, load plate, the 21, first perforation, 22, Second perforation, the 3, cover board, the 31, the 3rd perforation, 4, resonant column, 41, cylinder, 42, loading disk body, 5, step, the 51, first fixing Hole, 6, tuning screw, the 7, second screw, the 8, first screw.

Embodiment

Below in conjunction with the attached drawing of the utility model, the technical solution of the utility model embodiment is carried out clear, complete Description.

With reference to shown in Fig. 2~Fig. 4, a kind of revealed double coaxial combiners of loading of the utility model, overall is in a babinet Shape, it includes cavity 1, load plate 2 and cover board 3, and load plate 2 is loaded into cavity 1, and cover board 3, which then covers, to be fixed on cavity 1, For seal cavity, a shielding space is formed, the shielding space that cover board 3 and cavity 1 are formed then is divided into upper and lower two by load plate 2 Part, reduces the magnetic-coupled space in cavity, significantly reduces the resonant frequency of coaxial combiner；And shield effectiveness is more Good, decay is low.

At least two input adapters 11 and at least an out splice going splice 12 are provided with the same lateral surface of cavity 1, input connects First 11 are used for the input of different frequency range signal, and out splice going splice 12 is used to export signal after combining.In the present embodiment, out splice going splice 12 Equidistance is spaced between two input adapters 11, and with two input adapters 11.Have in cavity 1 multiple integral with cavity Molding resonant column 4, each resonant column 4 include the loading disk body 42 on cylinder 41 and cylinder 41.

Load plate 2 is loaded into cavity 1, is arranged in parallel with cover board, and it is empty that it forms lower shielding between the bottom wall of cavity 1 Between, upper shielding space is formed between cover board 3.Preferably, between load plate 2 and cavity 1 by being welded and fixed, or weldering is passed through Connect and fixed with the matched fixed structure of screw.

As between load plate 2 and cavity 1 directly by being welded and fixed, specifically, in the present embodiment, on the inner wall of cavity 1 Formed with multiple steps 5, from the inner wall of cavity 1, the direction into cavity extends to form step 5, and the upper surface of step 5 is less than cavity 1 Upper surface, load plate 2 is carried on these steps 5, and load plate 2 is fixed with the part that step 5 contacts by welding manner Connection, i.e., by way of load plate 2 and step 5 are welded and fixed by solder(ing) paste by high-temperature heating, make this two elements melt as one Body.In order to further enhance the being completely embedded property of cavity 1 and load plate 2, the middle part of cavity 1 also forms an at least step 5, step 5 are upwardly extended by the bottom of cavity 1 and are formed and be arranged at intervals with cavity inner wall, and its upper surface is also preferably below the upper table of cavity 1 Face, in this way, the middle part and edge of load plate 2 are carried on these steps 5, and load plate 2 passes through weldering with the part that step 5 contacts The mode of connecing is fixedly connected.The structure being welded and fixed, compared to existing screw rod fixing structure, it is firm more to stablize, and is not easy to loosen；And Space in cavity 1 is saved, makes the uniformity of load plate 2 and flatness more preferable.

As interchangeable embodiment, it can also pass through welding and the matched fixation of screw between load plate 2 and cavity 1 Structure is fixed.It is different from the embodiment described above, on the inner wall of above-mentioned cavity 1 and/or cavity 1 middle part formed step 5 On be also formed with the first holding hole 51 for the second screw 7 fixing, then supply the second screw 7 formed with least one in load plate 2 Pass through, position and 51 corresponding first perforation 21 of the first holding hole on step 5.In this way, load plate 2 is carried on step 5, Its place contacted with step 5, a part are held by the second screw 7, i.e. the second screw 7 is worn through first in load plate 2 Hole 21, secures in the first holding hole 51 on corresponding step 5；Another part (i.e. both be in contact, without screw hold Part) be then fixedly connected by welding manner.In this way, adopt the mode being screwed compared to existing whole, the welding and The matched fixed structure of screw can use less on the basis of ensureing that load plate 2 is identical with 1 degree of being completely embedded of cavity Screw, and weld the mode that coordinates load plate 2 is more stablized with cavity 1 firm, it is not easy to loosen；And save empty in cavity 1 Between, make the uniformity of load plate 2 and flatness more preferable.

In addition, also there is the second perforation 22 that multiple cylinders for resonant column 4 pass through, the loading of resonant column 4 in load plate 2 Disk body 42 is then located at the top of load plate 2, i.e., the loading disk body 42 of resonant column 4 is between load plate 2 and cover board 3, load plate 2 Double loading structures are formed with loading disk body 42, reduces the magnetic-coupled space in cavity, reduces the resonant frequency of combiner.

Cover board 3 is covered on cavity 1, for protecting 1 inner body of cavity.In the present embodiment, between cover board 3 and cavity 1 It is fixedly connected by the first screw rod 8, specifically, multiple the 3rd perforation 31 passed through for the first screw rod 8 is offered on cover board 3, the Three perforation 31 are mainly distributed on outer edge and the middle part of cover board 3, are provided with cavity 1 and 31 corresponding second fixing of the 3rd perforation Hole 13, these second holding holes 13 are also mainly distributed on the outer edge of cavity 1 and the middle part of cavity 1.

Multiple tuned window (not shown) are additionally provided with cover board 3, are passed through for tuning screw 6, each tuning screw 6 and cavity A resonant column 4 in 1 is corresponding.

The technology contents and technical characteristic of the utility model have revealed that as above, but those skilled in the art still may be used Teaching and announcement that can be based on the utility model and make a variety of replacements and modification without departing substantially from the utility model spirit, therefore, this Utility model protection scope should be not limited to the revealed content of embodiment, and should include the various replacements without departing substantially from the utility model And modification, and covered by present patent application claim.

Claims (10)

1. a kind of double coaxial combiners of loading, including cavity, the cover board covered on cavity, the of some fixing cavitys and cover board Out splice going splice and input adapter on one screw and cavity, form a shielding space, its feature exists between the cover board and cavity In double coaxial combiners of loading further include the load plate being loaded into the cavity, and the load plate is empty by the shielding Between be divided into up and down two parts.

2. double coaxial combiners of loading according to claim 1, it is characterised in that the cavity further includes multiple and cavity Integrally formed resonant column, each resonant column include the loading disk body on cylinder and cylinder, and the loading disc body adds positioned at described Between support plate and cover board.

3. double coaxial combiners of loading according to claim 1, it is characterised in that be less than chamber equipped with multiple in the cavity The step of body upper surface, the load plate is carried on the step, and is weldingly connected between step.

4. double coaxial combiners of loading according to claim 3, it is characterised in that double coaxial combiners of loading also wrap Some second screws are included, the structure fixed between the load plate and the step by welding and the second screw fit connects.

5. double coaxial combiners of loading according to claim 3, it is characterised in that the load plate horizontal bearing is in described It is arranged in parallel on step and with cover board.

6. double coaxial combiners of loading according to claim 3, it is characterised in that the step is from the inner wall of cavity to chamber Internal direction extends to form.

7. double coaxial combiners of loading according to claim 6, it is characterised in that the middle part of the cavity is formed with multiple With the spaced step of the inner wall of cavity.

8. double coaxial combiner of loading according to claim 4, it is characterised in that formed with holding hole on the step, In the load plate formed with holding hole is corresponding, the first perforation for being passed through for the second screw, second screw passes through First perforation is immobilizated in holding hole, and load plate is immobilizated on step.

9. double coaxial combiners of loading according to claim 1, it is characterised in that the out splice going splice and input adapter position In the same side of cavity.

10. double coaxial combiner of loading according to claim 1, it is characterised in that be also equipped with the cover board and chamber The corresponding tuning screw of internal resonant column.