CN213989150U

CN213989150U - Adjustable attenuator

Info

Publication number: CN213989150U
Application number: CN202022604800.8U
Authority: CN
Inventors: 王亮; 何心桥; 张才渊; 邵剑
Original assignee: Shanghai Queju Communication Equipment Co ltd
Current assignee: Shanghai Queju Communication Equipment Co ltd
Priority date: 2020-11-11
Filing date: 2020-11-11
Publication date: 2021-08-17
Anticipated expiration: 2030-11-11

Abstract

The utility model relates to an attenuator technical field just discloses an attenuator with adjustable, including the attenuator, the positive right side fixed mounting of attenuator has first connector, the positive right side fixed mounting of attenuator has the second connector, the adjustment tank has been seted up in the bottom left side of attenuator, the inside right wall fixed mounting of adjustment tank has the bearing, the left side of bearing is rotated and is connected with first threaded rod. This attenuator with adjustable turns round through the first commentaries on classics that the rotational attenuator left and right sides set up and the second is turned round, can drive first threaded rod and second threaded rod respectively, makes and controls about the first mounting panel with first threaded rod threaded connection, and the second mounting panel is controlled equally can, makes the position in fastening hole on the mounting panel adjust about can going on, has avoided the phenomenon that the unable regulation of correspondence appears in the screw hole on fastening hole on the attenuator and the installation face, has made things convenient for the installation to the attenuator.

Description

Adjustable attenuator

Technical Field

The utility model relates to an attenuator technical field specifically is an attenuator with adjustable.

Background

The attenuator is an electronic component for providing attenuation, is widely applied to electronic equipment, and has the main purposes that: adjusting the size of a signal in the circuit; in the comparison method measuring circuit, the attenuation value of the measured network can be directly read; to improve impedance matching, if some circuits require a relatively stable load impedance, an attenuator may be inserted between the circuit and the actual load impedance to buffer the impedance variation, the attenuator being a circuit for introducing a predetermined attenuation over a specified frequency range. Generally indicated in decibels of the attenuation introduced and ohms of its characteristic impedance. Attenuators are widely used in cable television systems to meet the multi-port level requirements. Such as the control of the input and output levels of the amplifier, and the control of the branch attenuation. The attenuator has both a passive attenuator and an active attenuator. The active attenuator is matched with other heat-sensitive elements to form a variable attenuator, and the variable attenuator is arranged in an amplifier and used in an automatic gain or slope control circuit.

The conventional high-power adjustable attenuator is generally fixedly installed by arranging fastening holes at four corners or edges of the attenuator, the fixing mode cannot be adjusted, when distance deviation exists between the threaded holes formed in the installation surface and the fastening holes in the attenuator, the attenuator cannot be installed, holes need to be formed in the attenuator, and inconvenience is brought to installation of the attenuator.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an attenuator with adjustable to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an adjustable attenuator comprises an attenuator, wherein a first connecting port is fixedly arranged on the right side of the front of the attenuator, a second connecting port is fixedly arranged on the right side of the front of the attenuator, an adjusting groove is formed in the left side of the bottom of the attenuator, a bearing is fixedly arranged on the right wall of the inner part of the adjusting groove, the left side of the bearing is rotatably connected with a first threaded rod, a first rotating knob is fixedly arranged on the left end of the first threaded rod, a first mounting plate is connected with the rod body of the first threaded rod in a threaded manner, a first fastening hole is formed in the front end of the upper surface of the first mounting plate, a sliding port is formed in the edge of the left side of the bottom of the attenuator, a sliding groove is formed in the rear wall of the inner part of the adjusting groove, a limiting sliding block is connected in a sliding manner inside the sliding groove, the first mounting plate is fixedly connected with the front of the limiting block, and the right side of the bottom of the attenuator is rotatably connected with a second threaded rod, the body of rod threaded connection of second threaded rod has the second mounting panel, second fastening hole has been seted up to the upper surface front end of second mounting panel, the right-hand member fixed mounting of second threaded rod has the second to turn round.

Preferably, a first internal thread hole is formed in the middle of the first mounting plate, and a first threaded rod is connected to the internal thread of the first internal thread hole in a threaded manner.

Preferably, the number of the bearings is 2, the bearings are respectively arranged on the inner right wall and the inner left wall of the adjusting groove, and the first threaded rods are rotatably connected inside the two bearings.

Preferably, the number of the first fastening holes is 2, and the first fastening holes are respectively formed in the front end and the rear end of the upper surface of the first mounting plate, and the number of the second fastening holes is 2, and the second fastening holes are respectively formed in the front end and the rear end of the upper surface of the second mounting plate.

Preferably, the quantity of spout is 2, sets up respectively at the inside antetheca and the inside back wall of adjustment tank, and the inside of two spouts all sliding connection has a spacing slider, fixedly connected with first mounting panel between two spacing sliders.

Preferably, a second internal thread hole is formed in the middle of the second mounting plate, and a second threaded rod is connected to the internal thread of the second internal thread hole in a threaded manner.

Compared with the prior art, the utility model provides an attenuator with adjustable. The method has the following beneficial effects:

this attenuator with adjustable turns round through the first commentaries on classics that the rotational attenuator left and right sides set up and the second is turned round, can drive first threaded rod and second threaded rod respectively, makes and controls about the first mounting panel with first threaded rod threaded connection, and the second mounting panel is controlled equally can, makes the position in fastening hole on the mounting panel adjust about can going on, has avoided the phenomenon that the unable regulation of correspondence appears in the screw hole on fastening hole on the attenuator and the installation face, has made things convenient for the installation to the attenuator.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic view of the bottom cross-sectional structure of the present invention;

FIG. 3 is a schematic side sectional view of the present invention;

fig. 4 is an enlarged view of a portion a in fig. 3.

In the figure: the device comprises an attenuator 1, a first connecting port 2, a second connecting port 3, a first adjusting knob 4, a first mounting plate 5, an adjusting groove 6, a sliding port 7, a first fastening hole 8, a first internal thread hole 9, a bearing 10, a first threaded rod 11, a second mounting plate 12, a second adjusting knob 13, a second threaded rod 14, a second internal thread hole 15, a second fastening hole 16, a limiting sliding block 17 and a sliding chute 18.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: an adjustable attenuator comprises an attenuator 1, a first connecting port 2 is fixedly arranged on the right side of the front of the attenuator 1, a second connecting port 3 is fixedly arranged on the right side of the front of the attenuator 1, an adjusting groove 6 is formed in the left side of the bottom of the attenuator 1, a bearing 10 is fixedly arranged on the right wall inside the adjusting groove 6, a first threaded rod 11 is rotatably connected to the left side of the bearing 10, the number of the bearings 10 is 2, the bearings are respectively arranged on the right wall inside the adjusting groove 6 and the left wall inside the adjusting groove 6, a first threaded rod 11 is rotatably connected to the inside of the two bearings 10, a first rotating knob 4 is fixedly arranged on the left end of the first threaded rod 11, a first mounting plate 5 is in threaded connection with the rod body of the first threaded rod 11, a first internal threaded hole 9 is formed in the middle of the first mounting plate 5, a first threaded rod 11 is in threaded connection with the inside of the first internal threaded hole 9, and a first fastening hole 8 is formed in the front end of the upper surface of the first mounting plate 5, the number of the first fastening holes 8 is 2, the first fastening holes are respectively arranged at the front end and the rear end of the upper surface of the first mounting plate 5, the number of the second fastening holes 16 is 2, the second fastening holes are respectively arranged at the front end and the rear end of the upper surface of the second mounting plate 12, the left edge of the bottom of the attenuator 1 is provided with a sliding port 7, the inner rear wall of the adjusting groove 6 is provided with a sliding groove 18, the inner part of the sliding groove 18 is slidably connected with a limiting slide block 17, the front surface of the limiting slide block 17 is fixedly connected with the first mounting plate 5, the number of the sliding grooves 18 is 2, the sliding grooves are respectively arranged at the inner front wall and the inner rear wall of the adjusting groove 6, the inner parts of the two sliding grooves 18 are both slidably connected with a limiting slide block, the first mounting plate 5 is fixedly connected between the two limiting slide blocks, the right side of the bottom of the attenuator 1 is rotatably connected with a second threaded rod 14, and the rod body of the second threaded rod 14 is in threaded connection with the second mounting plate 12, second internal thread hole 15 has been seted up at the middle part of second mounting panel 12, the internal thread connection in second internal thread hole 15 has second threaded rod 14, second fastening hole 16 has been seted up to the upper surface front end of second mounting panel 12, the right-hand member fixed mounting of second threaded rod 14 has second turning round 13, first turning round 4 and the second turning round 13 that sets up through rotating attenuator 1 left and right sides, can drive first threaded rod 11 and second threaded rod 14 respectively, make and control about first mounting panel 5 with first threaded rod 11 threaded connection can remove, second mounting panel 12 removes about can removing equally, the regulation about the position that makes the fastening hole on the mounting panel can be controlled, fastening hole on the attenuator 1 and the screw hole on the installation face do not appear the phenomenon that can't adjust, the installation to attenuator 1 has been made things convenient for.

In the actual operation process, when this device uses, through the first turn-knob 4 and the second turn-knob 13 that rotate attenuator 1 left and right sides setting, can drive first threaded rod 11 and second threaded rod 14 respectively, make and move about with first threaded rod 11 threaded connection's first mounting panel 5, second mounting panel 12 removes about can also removing, the position that makes the fastening hole on the mounting panel can control the regulation, the phenomenon that the screw hole on the fastening hole on the attenuator 1 and the installation face on the installation face appears not corresponding unable regulation has been avoided, the installation to attenuator 1 has been made things convenient for.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. The term "comprising", without further limitation, means that the element so defined is not excluded from the group consisting of additional identical elements in the process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An adjustable attenuator, comprising an attenuator (1), characterized in that: the right side of the front of the attenuator (1) is fixedly provided with a first connecting port (2), the right side of the front of the attenuator (1) is fixedly provided with a second connecting port (3), the left side of the bottom of the attenuator (1) is provided with an adjusting groove (6), the right wall of the inner part of the adjusting groove (6) is fixedly provided with a bearing (10), the left side of the bearing (10) is rotatably connected with a first threaded rod (11), the left end of the first threaded rod (11) is fixedly provided with a first torque (4), the rod body of the first threaded rod (11) is in threaded connection with a first mounting plate (5), the front end of the upper surface of the first mounting plate (5) is provided with a first fastening hole (8), the left side edge of the bottom of the attenuator (1) is provided with a sliding port (7), the rear wall of the inner part of the adjusting groove (6) is provided with a sliding groove (18), and the inner part of the sliding groove (18) is in sliding connection with a limiting slide block (17), the front fixedly connected with first mounting panel (5) of spacing slider (17), the bottom right side of attenuator (1) is rotated and is connected with second threaded rod (14), the body of rod threaded connection of second threaded rod (14) has second mounting panel (12), second fastening hole (16) have been seted up to the upper surface front end of second mounting panel (12), the right-hand member fixed mounting of second threaded rod (14) has second commentaries on classics round (13).

2. The adjustable attenuator of claim 1, wherein: first internal thread hole (9) have been seted up at the middle part of first mounting panel (5), the internal thread in first internal thread hole (9) is connected with first threaded rod (11).

3. The adjustable attenuator of claim 1, wherein: the number of the bearings (10) is 2, the bearings are respectively arranged on the right wall and the left wall of the adjusting groove (6), and the bearings (10) are rotatably connected with first threaded rods (11).

4. The adjustable attenuator of claim 1, wherein: the number of the first fastening holes (8) is 2, the first fastening holes are respectively arranged at the front end and the rear end of the upper surface of the first mounting plate (5), the number of the second fastening holes (16) is 2, and the second fastening holes are respectively arranged at the front end and the rear end of the upper surface of the second mounting plate (12).

5. The adjustable attenuator of claim 1, wherein: the quantity of spout (18) is 2, sets up respectively at the inside antetheca and the inside back wall of adjustment tank (6), and the inside of two spout (18) all sliding connection have a spacing slider, fixedly connected with first mounting panel (5) between two spacing sliders.

6. The adjustable attenuator of claim 1, wherein: second internal thread hole (15) have been seted up in the middle part of second mounting panel (12), the internal thread in second internal thread hole (15) is connected with second threaded rod (14).