Transmission rod and cavity filter

Abstract

The utility model discloses a transmission rod and a cavity filter, the transmission rod comprises a hollow rod body, a first welding platform and a second welding platform, the first welding platform and the second welding platform are arranged on the hollow rod body, the first welding platform is welded with a resonator, the second welding platform and a connector are welded, and a signal is transmitted to the connector from the resonator through the hollow rod body; through the structure, the weight of the transmission rod can be reduced, the material cost can be reduced, when the hollow rod body is flattened to form a welding platform, the tin containing area can be increased, the welding quality can be improved, the signal transmission quality is improved, and the use requirement is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the cavity filter field, especially in a kind of transmission pole and cavity filter. BACKGROUND

[0002] Cavity filter is widely used in communication field as a frequency selection device, in the base station of communication system complete signal transmission and reception, filter is used to select communication signal, filter out the noise or interference signal outside communication signal frequency.

[0003] Cavity filter usually includes cavity, and transmission pole and filter element etc. in the cavity, when using, filter element is welded with transmission pole by tap, transmission pole is welded with connector by connecting rod, to realize signal transmission;But the existing transmission pole is bent into shape by solid copper bar, then the required clamping groove and small platform welded with connector and tap piece are machined;The welding platform size of this transmission pole is limited by cost and bar diameter, not only cumbersome processing process, high processing cost, but also the soldering platform of processing is small, which is not conducive to the welding between transmission pole and other components;Therefore, a transmission pole and cavity filter are needed to solve the above problems. SUMMARY

[0004] The utility model aims at at least one of the technical problems existing in prior art is solved. To this end, the utility model provides a kind of transmission pole and cavity filter.

[0005] The technical scheme that one embodiment of the utility model solves its technical problem is as follows: a kind of transmission pole, including hollow pole body and the first welding platform and second welding platform being set on hollow pole body, the first welding platform is welded with resonator, the second welding platform is welded with connector, signal is transmitted to connector by resonator through hollow pole body.

[0006] As one of the preferred embodiments of the utility model, first flattening head is arranged on hollow pole body, and second flattening head is arranged on the other end, first flattening head constitutes first welding platform, and second flattening head constitutes second welding platform.

[0007] As one of the preferred embodiments of the utility model, butt joint hole is arranged on the first welding platform and / or second welding platform.

[0008] As one of the preferred embodiments of the utility model, a plurality of annular clamping grooves are arranged on the outer wall of hollow pole body along the length direction, for being connected with fixed clamping seat.

[0009] As one of the preferred embodiments of the utility model, a plurality of third welding platforms are arranged on hollow pole body.

[0010] As one of preferred embodiments of the utility model, the hollow rod body is made of copper, iron, steel or aluminum.

[0011] A cavity filter comprises the transmission rod.

[0012] The utility model discloses beneficial effect: a kind of transmission rod and cavity filter, transmission rod includes hollow rod body and first welding platform and second welding platform being arranged on hollow rod body, first welding platform is welded with resonator, second welding platform is welded with connector, signal is transmitted to connector by resonator through hollow rod body;The above structure not only can reduce the weight of transmission rod, but also can reduce material cost, when hollow rod body is flattened and constitutes welding platform, can improve tin area, is favorable to improve welding quality, to improve signal transmission quality in turn, satisfy use demand. BRIEF DESCRIPTION OF DRAWINGS

[0013] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:

[0014] Figure 1 It is the sectional view of prior cavity filter;

[0015] Figure 2 It is Figure 1 It is the local enlarged view of area A in it;

[0016] Figure 3 It is the structural schematic diagram of a kind of transmission rod;

[0017] Figure 4 It is the sectional view of a kind of transmission rod;

[0018] Figure 5 It is Figure 4 It is the local enlarged view of area B in it. DETAILED DESCRIPTION

[0019] This part will describe the specific embodiments of the utility model in detail, the preferred embodiment of the utility model is shown in the drawings, the role of the drawing is to supplement the description of the text part with graphics, so that people can intuitively, visually understand each technical feature and overall technical scheme of the utility model, but it cannot be understood as the limitation of the protection scope of the utility model.

[0020] In the description of the utility model, the meaning of multiple is two or more, greater than, less than, exceed etc. are understood as not including this number, above, below, within etc. are understood as including this number. If there is description to first, second, it is only used for distinguishing technical features for purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0021] In the description of the utility model, need understanding, relate to the direction description, for example, the direction or positional relation of indication such as upper, lower, front, back, left, right is based on the direction or positional relation shown in drawing, only for the convenience of describing the utility model and simplifying description, and is not the indication or the implied device or element must have the specific orientation, with specific orientation configuration and operation, therefore can not be understood as the restriction of the utility model.

[0022] In the utility model, unless otherwise explicitly limited, the words such as "set", "install", "connect" should be understood broadly, for example, can be directly connected, also can be indirectly connected through intermediate medium;Can be fixedly connected, can also be detachably connected, can also be integrally formed;Can be mechanical connection;It can be the communication or mutual action relationship of two elements inside two elements.

[0023] Refer to Figures 1 to 5 The utility model provides a transmission pole, including hollow pole body 10 and set up on hollow pole body 10 first welding platform and second welding platform, first welding platform is welded with resonator 60, second welding platform is welded with connector 70, signal is transmitted to connector 70 by resonator 60 through hollow pole body 10.

[0024] In the utility model, hollow pole body 10 preferably adopts capillary tube to be made, is thin-walled hollow structure, can be made of copper, iron, steel or aluminium etc., and forming process can be pultrusion etc., wherein, hollow pole body 10 is provided with at least one first welding platform and one second welding platform, first welding platform can be welded with the tap blade 61 on resonator 60, for feeding signal;Second welding platform can be welded with transmission pole 71, and transmission pole 71 is connected with connector 70 again, for output signal.

[0025] In further embodiments, the hollow rod body 10 is provided with a first flattening head 20 at one end and a second flattening head 30 at the other end, the first flattening head 20 constitutes a first welding platform, and the second flattening head 30 constitutes a second welding platform; specifically, the hollow rod body 10 is flattened at one end to form the first flattening head 20, thereby forming the first welding platform; the hollow rod body 10 is also flattened at the other end to form the second flattening head 30, thereby forming the second welding platform; in addition, the flattening of both ends forms a closed space inside the hollow rod body 10, which not only reduces the plating area, but also avoids the problem of blackening and boundary corrosion caused by the penetration of plating solution into the inner cavity of the hollow rod body 10 and the inability to discharge it; further, the first welding platform and / or the second welding platform is provided with a butt joint hole 40, which can be butt jointed, positioned, etc. with the tap piece 61 and / or the transmission rod 72, facilitating welding operation; it should be noted that the welding platform can be arranged at the middle position of the two ends of the hollow rod body 10, or at the bottom, top or any position of the two ends.

[0026] In some embodiments, the outer wall of the hollow rod body 10 is provided with a plurality of annular clamping grooves 50 arranged at intervals along the length direction, which are used to connect with the fixed clamping seat 80; specifically, the annular clamping grooves 50 are processed by rolling, so that the outer wall of the hollow rod body 10 is concave inward, which is used to cooperate with the fixed seat buckle 80 to limit the position movement of the hollow rod body 10 in the cavity.

[0027] In some embodiments, the hollow rod body 10 is provided with a plurality of third welding platforms, which can be arranged at any position of the hollow rod body 10, such as the middle of the length direction or the place where it needs to be lap welded with other components.

[0028] The utility model also provides a cavity filter which comprises the transmission rod.

[0029] The utility model has the advantages that the above structure can not only reduce the weight of the transmission rod, but also reduce the material cost; when the hollow rod body is flattened to form a welding platform, the tin capacity can be improved, which is beneficial to improve the welding quality and further improve the signal transmission quality, thereby meeting the use requirement.

[0030] Of course, the utility model is not limited to the above-mentioned embodiments, and those skilled in the art can make equivalent modifications or replacements without departing from the spirit of the utility model, and these equivalent modifications and replacements are all included in the range defined by the claims of the present application.

Claims

1. A transmission rod, characterized in that: It includes a hollow rod body (10) and a first welding platform and a second welding platform disposed on the hollow rod body (10). The first welding platform is welded to a resonator (60), and the second welding platform is welded to a connector (70). The signal is transmitted from the resonator (60) to the connector (70) through the hollow rod body (10).

2. A transmission rod according to claim 1, characterized in that: The hollow rod (10) is provided with a first flattening head (20) at one end and a second flattening head (30) at the other end. The first flattening head (20) constitutes the first welding platform and the second flattening head (30) constitutes the second welding platform.

3. A transmission rod according to claim 1, characterized in that: The first welding platform and / or the second welding platform are provided with mating holes (40).

4. A transmission rod according to claim 1, characterized in that: The hollow rod (10) has several annular slots (50) arranged at intervals along its length on its outer wall for connecting with the fixed bracket (80).

5. A transmission rod according to claim 1, characterized in that: Several third welding platforms are provided on the hollow rod (10).

6. A transmission rod according to claim 1, characterized in that: The hollow rod (10) is made of copper, iron, steel or aluminum.

7. A cavity filter, characterized in that: Includes the transmission rod as described in any one of claims 1-6.

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