Plug-in fixed attenuator

Abstract

The utility model relates to the technical field of attenuators, and discloses a plug-in type fixed attenuator, which comprises an attenuator body and a plurality of pins arranged at one end of the attenuator body, and a protection assembly is embedded in the outer walls of the two sides of the attenuator body in a sliding connection mode. The end, away from the attenuator body, of the protection assembly is fixedly connected with a cleaning assembly, and the side wall of the cleaning assembly is fixedly connected with a plurality of fastening assemblies. According to the utility model, through the arrangement of the protection assembly, before insertion and use, the outer housing of the protection assembly wraps the plurality of pins inside for protection, so that the condition that the pins are exposed to the outside, are bent under the action of external force and cannot be connected with the guide groove is avoided; under the elastic action of the springs, the movable blocks drive the corresponding fastening blocks to abut against and be fixed to the guide grooves, and connection of the attenuator body is reinforced.

Description

Technical Field

[0001] The utility model relates to the technical field of attenuators, in particular to an inserted fixed attenuator. Background Art

[0002] An attenuator is an electronic component that provides attenuation and is widely used in electronic equipment, including an inserted fixed attenuator. The main uses of an attenuator are: adjusting the size of the signal in the circuit; in the comparison method measurement circuit, it can be used to directly read the attenuation value of the measured network; improving impedance matching. If some circuits require a relatively stable load impedance, an attenuator can be inserted between this circuit and the actual load impedance to buffer the impedance change.

[0003] For example, the patent with publication number CN117497982A: an attenuator includes a base, a cavity with a circular cross section is horizontally arranged in the base, the left and right ends of the cavity penetrate the left and right ends of the base, an attenuator is arranged in the cavity, a signal input head and a signal output head are respectively arranged at the left and right ends of the attenuator, an internal thread is arranged on the inner wall of the cavity, a pair of circular blocks are symmetrically arranged in the cavity on the left and right sides of the attenuator, an external thread is arranged on the outer wall of the circular block to cooperate with the internal thread, a pair of circular blocks are respectively provided with a signal input limit hole and a signal input limit hole for the signal input head and the signal output head to pass through, and a first annular block surrounding the attenuator is convexly arranged on the facing end faces of the pair of circular blocks. The attenuator is fixed by a pair of circular blocks, a pair of first annular blocks, a signal input limit hole and a signal output limit hole to improve stability.

[0004] At present, plug-in fixed attenuators are mainly connected by inserting pins into interfaces in guide grooves. However, the pins of the plug-in fixed attenuators are exposed to the outside and are easily bent by external forces, resulting in failure to connect to the interface. The existing plug-in fixed attenuators are fixed by simple insertion when connected, and are easily fallen off by external forces.

[0005] Therefore, we propose an insertable fixed attenuator to solve the above problems. Utility Model Content

[0006] The utility model aims to provide an insertion type fixed attenuator to solve the problems that the pins of the insertion type fixed attenuator proposed in the above background technology are exposed to the outside and easily bent by external force, and are easily fallen off by external force when fixed by simple insertion during connection.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an inserted fixed attenuator, comprising an attenuator body and a plurality of pins arranged at one end of the attenuator body, a protective component is embedded and slidably connected to the outer walls on both sides of the attenuator body, a cleaning component is fixedly connected to the end of the protective component away from the attenuator body, and a plurality of fastening components are fixedly connected to the side wall of the cleaning component.

[0008] Preferably, slide grooves are provided on the outer walls on both sides of the attenuator body, and a threaded groove is provided on the inner cavity side wall of one of the slide grooves.

[0009] Preferably, the protective component includes an outer cover shell, and sliders are fixedly connected to the inner walls on both sides of the outer cover shell, and the two sliders are respectively slidably connected in the sliding grooves on both sides, and one of the sliders is threadedly connected to a limiting screw on the side wall of the outer cover shell on the same side.

[0010] Preferably, the cleaning assembly comprises a mounting plate fixedly connected to one end of the outer cover shell and a plurality of connecting sleeves fixedly connected to the side wall of the mounting plate, and a cleaning gasket is fixedly connected to the inner wall of each connecting sleeve.

[0011] Preferably, a plurality of through holes are opened on the side wall of the mounting plate at positions corresponding to the plurality of pins, an internal thread is provided on the inner wall of each of the through holes, an external thread is provided on the side wall of each of the connecting sleeves, and each of the connecting sleeves is connected to the corresponding through hole through the external thread and the internal thread.

[0012] Preferably, the fastening assembly includes a fixing seat symmetrically fixedly connected to the side wall of the mounting plate, each of the fixing seats is provided with a strip hole on the side wall, each of the inner cavity side walls of the strip hole is fixedly connected with a guide rod, each of the guide rods is slidably connected with a movable block on the side wall, each of the movable blocks is elastically connected to the inner cavity side wall of the corresponding strip hole through a spring, and the corresponding guide rod passes through the inner circle of the spring, each of the movable blocks is fixedly connected with a fastening block on the side wall, and each of the fastening blocks is a wedge-shaped structure.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. Through the protection component, before insertion and use, the outer cover shell of the protection component wraps multiple pins inside for protection, so as to prevent the pins from being bent when exposed to the outside and unable to connect with the guide groove due to external force.

[0015] 2. By setting up the cleaning component, when the sliding protection component retracts or exposes the pin, the outer wall of the pin can be cleaned once, so as to avoid the situation that dust and other impurities on the outer wall of the pin cause poor contact during connection.

[0016] 3. Through the fastening assembly, when inserted, the inclined surfaces of the two fastening blocks at the same pin abut against the guide groove (not shown in the figure), and the fastening block is squeezed to drive the movable block to slide outward along the guide rod. At this time, the spring is compressed. After the connection is completed, the elastic force of the spring drives the corresponding fastening block to be tightly fixed to the guide groove, thereby strengthening the connection of the attenuator body.

[0017] 4. By setting up the protective component, when the attenuator body is subjected to external force after connection, the deflection of the attenuator body can be reduced through the fastening connection between the outer cover shell and the guide groove, thereby avoiding the bending and damage of the pins after connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the utility model when the pins are located inside the protective component;

[0019] Figure 2 This is a schematic diagram of the overall structure of the utility model when the pins are located outside the protective component;

[0020] Figure 3 It is a structural schematic diagram of the attenuator body part in the utility model;

[0021] Figure 4 It is a structural schematic diagram of the protection component part of the utility model;

[0022] Figure 5 It is a schematic diagram of the structure of the cleaning component and the fastening component in the utility model.

[0023] In the figure: 1. attenuator body; 11. slide groove; 12. thread groove; 2. pin; 3. protection component; 31. outer cover shell; 32. slider; 33. limit screw; 4. cleaning component; 41. mounting plate; 411. through hole; 412. internal thread; 42. connecting sleeve; 421. external thread; 43. cleaning gasket; 5. fastening component; 51. fixing seat; 511. strip hole; 52. guide rod; 53. movable block; 54. spring; 55. fastening block. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example 1: Please refer to Figure 1-Figure 4A plug-in fixed attenuator comprises an attenuator body 1 and a plurality of pins 2 arranged at one end of the attenuator body 1. A protective component 3 is embedded and slidably connected on both side outer walls of the attenuator body 1. The protective component 3 is used to protect the pins 2 to prevent them from bending due to external force. A cleaning component 4 is fixedly connected to one end of the protective component 3 away from the attenuator body 1. The cleaning component 4 is used to clean the surface of the pins 2 when they are plugged in to prevent dust on the pins from causing poor contact. A plurality of fastening components 5 are fixedly connected to the side walls of the cleaning component 4. The fastening components 5 are used to further strengthen the fixation of the attenuator body 1 after it is connected so that it will not fall off easily under the action of external force.

[0026] Slide grooves 11 are provided on the outer walls of both sides of the attenuator body 1 for connecting the protection component 3 and enabling it to slide inside. A threaded groove 12 is provided on the inner cavity side wall of one of the slide grooves 11 .

[0027] The protective component 3 includes an outer cover shell 31, and sliders 32 are fixedly connected to the inner walls on both sides of the outer cover shell 31. The two sliders 32 are respectively slidably connected to the slide grooves 11 on both sides, so that the protective component 3 will not be separated from the slide grooves 11 when sliding along the slide grooves 11. One of the sliders 32 is threadedly connected to a limiting screw 33 on the side wall of the outer cover shell 31 on the same side. The protective component 3 can be limited by the threaded connection between the limiting screw 33 and the thread groove 12, so that the protective component 3 remains stable when protecting multiple pins 2 and will not slide at will.

[0028] In this embodiment: the attenuator body 1 is used for amplifier / node setting, and the corresponding dB value is printed on it. The attenuator body 1 can be adjusted from 0 to 20dB with a step of 0.5dB. Its electrical interface is three pins 2, the center of which is grounded. The material of pin 2 is brass H62;

[0029] The maximum RF power of the attenuator body 1 is 0.15W, the bandwidth is 5 to 1218MHz, the operating temperature range is -40℃ to +120℃, and the storage temperature range is -45℃ to +125℃;

[0030] Before insertion and use, the outer cover shell 31 of the protective component 3 wraps the multiple pins 2 inside for protection, preventing the pins 2 from bending when exposed to the outside and being unable to connect with the guide groove, and the position of the outer cover shell 31 is fixed by connecting the limit screw 33 with the threaded groove 12 opened inside the slide groove 11, so that the pins 2 will not slide when being protected.

[0031] Embodiment 2: This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 5The cleaning component 4 includes a mounting plate 41 fixedly connected to one end of the outer cover shell 31 and a plurality of connecting sleeves 42 fixedly connected to the side wall of the mounting plate 41. A cleaning gasket 43 is fixedly connected to the inner wall of each connecting sleeve 42. When the protective component 3 slides to make the pin 2 slide in or out, the cleaning gasket 43 can wipe off dust and other debris on the outer wall of the pin 2, thereby reducing the possibility of poor release of the pin 2.

[0032] A plurality of through holes 411 are provided on the side wall of the mounting plate 41 at positions corresponding to the plurality of pins 2 for passing the pins 2. An internal thread 412 is provided on the inner wall of each through hole 411. An external thread 421 is provided on the side wall of each connecting sleeve 42. Each connecting sleeve 42 is connected to the corresponding through hole 411 via the external thread 421 and the internal thread 412, so as to facilitate the disassembly and installation of the connecting sleeve 42. The cleaning gasket 43 can be removed for cleaning or replacement after being used for a period of time.

[0033] The fastening assembly 5 includes a fixing seat 51 symmetrically fixedly connected to the side wall of the mounting plate 41, and each fixing seat 51 is provided with a strip hole 511 on the side wall, and a guide rod 52 is fixedly connected to the inner cavity side wall of each strip hole 511, and a movable block 53 is slidably connected to the side wall of each guide rod 52, and each movable block 53 is elastically connected to the inner cavity side wall of the corresponding strip hole 511 through a spring 54, and the corresponding guide rod 52 passes through the inner circle of the spring 54, and the movable block 53 can slide along its outer wall through the guide rod 52, and a certain pressing force is applied to the movable block 53 through the spring 54, and a fastening block 55 is fixedly connected to the side wall of each movable block 53, and each fastening block 55 is a wedge-shaped structure. When the attenuator body 1 is connected, the fastening block 55 is used to strengthen the stability of the connection between the pin 2 and the guide groove (not shown in the figure).

[0034] In this embodiment: when connecting, first loosen the limit screw 33, slide the outer cover shell 31 to make the pin 2 pass through the connecting sleeve 42 inside the through hole 411 and then be exposed, and slide the inner ring side wall of the cleaning gasket 43 against the outer wall of the pin 2 to wipe off the dust and other debris on the outer wall of the pin 2 to reduce the poor contact of the pin 2;

[0035] During insertion, the inclined surfaces of the two fastening blocks 55 at the same pin 2 abut against the guide groove (not shown in the figure), and the fastening blocks 55 are squeezed to drive the movable block 53 to slide outward along the guide rod 52. At this time, the spring 54 is compressed. After the connection is completed, the elastic force of the spring 54 drives the movable block 53 to drive the corresponding fastening block 55 to be tightly fixed to the guide groove, thereby strengthening the connection of the attenuator body 1.

[0036] Working principle: Before insertion and use, the outer cover shell 31 of the protective component 3 wraps the multiple pins 2 inside for protection, and fixes the position of the outer cover shell 31 by connecting the limit screw 33 with the threaded groove 12 opened inside the slide groove 11; when inserting and connecting, loosen the limit screw 33, slide the outer cover shell 31 to make the pin 2 pass through the cleaning component 4 inside the through hole 411 to expose, during this process, the inner ring side wall of the cleaning gasket 43 slides against the outer wall of the pin 2, and then the pin 2 is inserted into the interface of the guide groove (not shown in the figure). When inserting, the inclined surfaces of the two fastening blocks 55 at the same pin 2 are against the guide groove, and the fastening block 55 is squeezed to drive the movable block 53 to slide outward along the guide rod 52. At this time, the spring 54 is compressed. After the connection is completed, under the elastic force of the spring 54, the movable block 53 drives the corresponding fastening block 55 to be tightly fixed to the guide groove.

[0037] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0038] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An insertion type fixed attenuator, comprising an attenuator body (1) and a plurality of pins (2) arranged at one end of the attenuator body (1), characterized in that: A protective component (3) is slidably embedded in the outer walls of both sides of the attenuator body (1), a cleaning component (4) is fixedly connected to one end of the protective component (3) away from the attenuator body (1), and a plurality of fastening components (5) are fixedly connected to the side walls of the cleaning component (4).

2. The plug-in fixed attenuator according to claim 1, characterized in that: The outer walls on both sides of the attenuator body (1) are provided with sliding grooves (11), and a threaded groove (12) is provided on the inner cavity side wall of one of the sliding grooves (11).

3. The plug-in fixed attenuator according to claim 2, characterized in that: The protection component (3) comprises an outer cover shell (31), and sliders (32) are fixedly connected to the inner walls on both sides of the outer cover shell (31), and the two sliders (32) are respectively slidably connected to the slide grooves (11) on both sides, and one of the sliders (32) and the side wall of the outer cover shell (31) on the same side are threadedly connected to a limiting screw (33).

4. The plug-in fixed attenuator according to claim 3, characterized in that: The cleaning assembly (4) comprises a mounting plate (41) fixedly connected to one end of the outer housing (31) and a plurality of connecting sleeves (42) fixedly connected to the side wall of the mounting plate (41), and a cleaning gasket (43) is fixedly connected to the inner wall of each connecting sleeve (42).

5. The plug-in fixed attenuator according to claim 4, characterized in that: A plurality of through holes (411) are provided on the side wall of the mounting plate (41) at positions corresponding to the plurality of pins (2); an internal thread (412) is provided on the inner wall of each through hole (411); an external thread (421) is provided on the side wall of each connecting sleeve (42); and each connecting sleeve (42) is connected to the inside of the corresponding through hole (411) via the external thread (421) and the internal thread (412).

6. The plug-in fixed attenuator according to claim 5, characterized in that: The fastening assembly (5) comprises a fixing seat (51) symmetrically fixedly connected to the side wall of the mounting plate (41); a strip hole (511) is opened on the side wall of each fixing seat (51); a guide rod (52) is fixedly connected to the inner cavity side wall of each strip hole (511); a movable block (53) is slidably connected to the side wall of each guide rod (52); each movable block (53) is elastically connected to the inner cavity side wall of the corresponding strip hole (511) via a spring (54); the corresponding guide rod (52) penetrates the inner circle of the spring (54); a fastening block (55) is fixedly connected to the side wall of each movable block (53); and each fastening block (55) is a wedge-shaped structure.

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