A linear electrically adjustable attenuator

Abstract

The present invention belongs to the technical field of attenuators, and in particular discloses a linear electrically adjustable attenuator, including an attenuator body, both ends of the attenuator body are provided with a plate, the plate is fixedly installed on the end of the attenuator body by using a plurality of screws, the end of the attenuator body is provided with an inner groove, a connector is provided at the center of the inner groove, a port is provided at the center of the outer side of the plate, a connector is sleeved on the surface of the port, and the outer end of the connector is connected to a wire. The present invention approaches the end face of the attenuator body by the inner side of the plate, and the plate is limited by a limiting component so that the frame plate clamps the inner side of the connector by an arc plate under the limitation of an inclined rod, and the movable arc plate uses a clamping ring and an insert rod to make the side plate clamp the outer side of the connector by a convex strip, so that the connector is horizontally located inside the inner groove of the attenuator body, which is convenient for the outer end of the connector to correspond to the inner end of the inner core, and avoids the displacement of the connector due to collision.

Description

Technical Field

[0001] The invention belongs to the technical field of attenuators, and in particular relates to a linear electrically adjustable attenuator. Background Art

[0002] An attenuator is an electronic component that provides attenuation and is widely used in electronic equipment. Its main uses 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 changes.

[0003] When an external component impacts the attenuator housing, the impact force can easily cause the connection end of the chip inside the attenuator to shift, and the external electrical appliance cannot be accurately plugged into the connection end using the connector.

[0004] Therefore, it is necessary to invent a linear electrically adjustable attenuator to solve the above problems. Summary of the invention

[0005] In view of the above problems, the present invention provides a linear electrically adjustable attenuator to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a linear electrically adjustable attenuator, comprising an attenuator body, both ends of the attenuator body are provided with a plate, the plate is fixedly installed on the end of the attenuator body by using multiple screws, the end of the attenuator body is provided with an inner groove, a connector is provided at the center of the inner groove, a port is provided at the center of the outer side of the plate, the surface of the port is sleeved with a connector, the outer end of the connector is connected to a wire, an inner core is provided at the center of the inner end of the connector, a through hole corresponding to the inner core is provided at the center of the plate, the inner end of the inner core is plugged into the outer end of the connector through the center of the port, a limiting component for limiting the connector is provided inside the inner groove, the limiting component comprises multiple frame plates, an arc plate is fixed to the inner end of the frame plate, the inner concave surface of the arc plate is in contact with the outer side of the circumference of the connector, and the multiple frame plates all use the arc plate to cooperate and clamp the connector.

[0007] Furthermore, a ring edge is fixed to the inner side of the outer circumferential surface of the connecting end, and a gear ring is rotatably sleeved on the inner end of the connecting end. The outer side of the gear ring is rotatably sleeved on the outer side of the ring edge, and the inner end of the gear ring is spirally sleeved on the outer circumferential surface of the port, and the inner side of the gear ring is fitted with the outer side of the plate.

[0008] Furthermore, the inner wall of the inner groove is provided with a plurality of side grooves, an inclined rod is fixed on the inner side of the side groove, the outer end of the frame plate is slidably sleeved on the surface of the inclined rod, the outer end of the frame plate is inserted into the inner side of the side groove, a spring is sleeved on the surface of the inclined rod, one end of the spring is connected to the inner side surface of the frame plate, and the other end of the spring is connected to the inner side surface of the inner groove.

[0009] Furthermore, the distance between the inner end of the inclined rod and the center line of the connector is smaller than the distance between the outer end of the inclined rod and the center line of the connector. When the frame plate moves inwardly inside the side groove, the outer end of the moving frame plate slides on the surface of the inclined rod.

[0010] Furthermore, the limiting component includes multiple side panels, which surround the outer side of the connecting head, and the multiple side panels correspond one-to-one to the multiple frame panels. The side panels are located between the frame panels and the adhesive panels, and clamping rings are fixed on both sides of the outer convex surface of the arc-shaped panels. Two plug rods are fixed on the end faces of the side panels, and the two plug rods correspond one-to-one to the two clamping rings. The plug rods are correspondingly inserted into the inner sides of the clamping rings, and the end faces of the side panels are fitted with the outer side faces of the frame panels.

[0011] Furthermore, a convex strip is fixed on the inner side of the side panel, the inner concave surface of the convex strip is connected to the outer side of the circumference of the connecting head, a square rod is fixed on the outer side of the side panel, a plurality of convex plates are fixed on the inner end of the patch plate, the plurality of side panels correspond to the plurality of convex plates one by one, the outer end of the square rod passes through the convex plate, and a round plate is fixed on the outer end of the square rod.

[0012] Furthermore, a plurality of insertion holes are arranged on the surface of the pasting plate, a pressing plate is inserted into the insertion holes, a wedge block is arranged at the inner end of the pressing plate, and the inner side surface of the wedge block corresponds to the outer side surface of the side plate.

[0013] Furthermore, the outer end surface of the pressing plate is flush with the outer end surface of the pasting plate, and the outer end surface of the pressing plate is in contact with the inner side surface of the gear ring.

[0014] Technical effects and advantages of the present invention:

[0015] 1. The present invention places the inner side surface of the pasting plate close to the end surface of the attenuator body. The pasting plate uses a limiting component to enable the frame plate to clamp the inner side of the connector with the arc plate under the limitation of the inclined rod. The movable arc plate uses a clamping ring and an insertion rod to enable the side plate to clamp the outer side of the connector with the convex strip, so that the connector is horizontally located inside the inner groove of the attenuator body, which facilitates the correspondence between the outer end of the connector and the inner end of the inner core, avoiding the displacement of the connector due to impact.

[0016] 2. The frame plate of the present invention is conveniently moved by the elastic force of the spring, and the side plate is driven to move outward by the clamping ring and the plug rod. The outward-moving side plate makes the sticking plate away from the attenuator body, so that the connector inside the inner groove of the attenuator body can be quickly checked, and the damaged connector can be quickly repaired.

[0017] 3. The present invention uses the spiral cooperation between the toothed ring and the port to enable the toothed ring to drive the pressure plate into the inner groove. The moving pressure plate uses the inner side of the wedge block to squeeze the outer side of the side plate. Under the movement and squeezing of the wedge block, the clamping effect of the side plate on the connector using the convex strips is further improved, thereby improving the corresponding effect between the inner core and the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is an overall schematic diagram of a linear electrically adjustable attenuator according to an embodiment of the present invention;

[0019] Figure 2 Schematic diagram of the outer socket connection end of the port according to an embodiment of the present invention;

[0020] Figure 3 is a three-dimensional schematic diagram of an overall cross-section of an attenuator end portion according to an embodiment of the present invention;

[0021] Figure 4 is an overall schematic diagram of a side panel according to an embodiment of the present invention;

[0022] Figure 5 2 is a schematic diagram of the inner side components of a pasting board according to an embodiment of the present invention;

[0023] Figure 6 is a schematic diagram of a plurality of convex plates connected inside a pasting plate according to an embodiment of the present invention;

[0024] In the figure: 1. attenuator body; 2. plate; 3. screw; 4. connector; 5. port; 6. connecting end; 7. inner core; 8. frame plate; 9. arc plate; 10. ring edge; 11. gear ring; 12. side groove; 13. oblique rod; 14. spring; 15. side plate; 16. retaining ring; 17. plug rod; 18. convex strip; 19. square and round rod; 20. convex plate; 21. socket; 22. pressure plate. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0026] The present invention provides a linear electrically adjustable attenuator, such as Figures 1 to 5As shown, it includes an attenuator body 1, both ends of which are provided with a plate 2, and the plate 2 is fixedly installed on the end of the attenuator body 1 by using multiple screws 3. The end of the attenuator body 1 is provided with an inner groove, and a connector 4 is provided at the center of the inner groove. A port 5 is provided at the center of the outer side of the plate 2, and a connector 6 is sleeved on the surface of the port 5. The outer end of the connector 6 is connected to the wire, and an inner core 7 is provided at the center of the inner end of the connector 6. A through hole corresponding to the inner core 7 is provided at the center of the plate 2, and the inner end of the inner core 7 is plugged into the outer end of the connector 4 through the center of the port 5. A limiting component for limiting the connector 4 is provided inside the inner groove, and the limiting component includes multiple frame plates 8, and an arc plate 9 is fixed to the inner end of the frame plate 8. The inner concave surface of the arc plate 9 fits with the outer circumferential side of the connector 4, and multiple frame plates 8 all use the arc plate 9 to clamp the connector 4. The inner end of the plate 2 is fitted to the end face of the attenuator body 1, and the screws 3 are passed through the plate 2. The spiral cooperation of the multiple screws 3 and the attenuator body 1 makes the plate 2 fixedly installed on the end of the attenuator body 1. When the plate 2 is installed on the end of the attenuator body 1, the attenuator body 1 pushes the multiple frame plates 8 to move inward inside the inner groove through the limiting component. The inner end of the frame plate 8 is correspondingly clamped on the outer side of the circumference of the connector 4 by the arc plate 9, and the clamping cooperation of the multiple frame plates 8 makes the connector 4 stably located at the center of the inner groove to prevent the connector 4 from shifting inside the inner groove. The connecting end 6 is inserted into the outer side of the port 5, and the inner core 7 at the center of the connecting end 6 passes through the port 5 until the inner end of the inner core 7 is connected to the outer end of the connector 4, so that the external components are convenient to communicate with the attenuator body 1 through the inner core 7 and the connector 4.

[0027] exist Figure 1 and Figure 2 In the embodiment, the inner side of the outer circumferential surface of the connecting end 6 is fixed with a ring edge 10, and the inner side of the connecting end 6 is rotatably sleeved with a toothed ring 11, and the outer side of the toothed ring 11 is rotatably sleeved on the outer side of the ring edge 10, and the inner side of the toothed ring 11 is spirally sleeved on the outer circumferential surface of the port 5, and the inner side of the toothed ring 11 is fitted with the outer side of the plate 2. The inner side of the toothed ring 11 is aligned with the outer side of the port 5, and the toothed ring 11 is rotated. The spiral fit between the toothed ring 11 and the port 5 allows the toothed ring 11 to move on the surface of the port 5. The moving toothed ring 11 drives the connecting end 6 to approach the port 5 by means of the ring edge 10, and the moving connecting end 6 drives the inner core 7 to enter the inner groove of the attenuator body 1. When the inner side of the toothed ring 11 is fitted with the outer side of the plate 2, the inner end of the inner core 7 is connected with the outer end of the connector 4.

[0028] exist Figure 3In the embodiment, the inner side wall of the inner groove is provided with a plurality of side grooves 12, an inclined rod 13 is fixed inside the side groove 12, the outer end of the frame plate 8 is slidably sleeved on the surface of the inclined rod 13, the outer end of the frame plate 8 is inserted inside the side groove 12, a spring 14 is sleeved on the surface of the inclined rod 13, one end of the spring 14 is connected to the inner side of the frame plate 8, and the other end of the spring 14 is connected to the inner side of the inner groove. The distance between the inner end of the inclined rod 13 and the center line of the connector 4 is smaller than the distance between the outer end of the inclined rod 13 and the center line of the connector 4, and when the frame plate 8 moves inward inside the side groove 12, the outer end of the moving frame plate 8 slides on the surface of the inclined rod 13. The pasting plate 2 utilizes limiting components so that when multiple frame plates 8 move inwardly inside the inner groove, the outer end of the frame plate 8 squeezes the spring 14 on the surface of the inclined rod 13 on the inner side of the side groove 12. Since the inclined rod 13 is inclined, while the inwardly moving frame plate 8 slides on the surface of the inclined rod 13, the arc plate 9 on the inner end of the frame plate 8 gradually approaches the connector 4 until the inner side surface of the pasting plate 2 is in contact with the end face of the attenuator body 1, and the inner concave surface of the arc plate 9 is in contact with the outer side surface of the circumference of the connector 4. Multiple frame plates 8 utilize the arc plate 9 to make the connector 4 horizontally located inside the inner groove to prevent the connector 4 from tilting inside the inner groove.

[0029] exist Figures 3 to 5 In the figure, the limiting component includes multiple side panels 15, and the multiple side panels 15 surround the outer side of the connecting head 4. The multiple side panels 15 correspond to the multiple frame panels 8 one by one. The side panels 15 are located between the frame panels 8 and the adhesive panel 2. Snap rings 16 are fixed on both sides of the outer convex surface of the arc plate 9. Two plug rods 17 are fixed to the end faces of the side panels 15. The two plug rods 17 correspond to the two snap rings 16 one by one, and the plug rods 17 are correspondingly inserted into the inner side of the snap rings 16, and the end faces of the side panels 15 are in contact with the outer side faces of the frame panels 8. The plurality of side panels 15 are matched one by one with the plurality of frame panels 8. At this time, the insertion rod 17 on the end face of the side panel 15 corresponds to the retaining ring 16 on the outer convex surface of the arc-shaped panel 9, until the inner end of the insertion rod 17 is inserted into the inner side of the retaining ring 16, and the plate 2 is close to the end face of the attenuator body 1. The plate 2 uses the side panel 15 to drive the frame panel 8 to move inward inside the inner groove, and the installation of the plate 2 is completed by using the plurality of screws 3; unscrew the plurality of screws 3 on the plate 2, and the elastic force of the spring 14 causes the frame panel 8 to move outward inside the side groove 12. The moving frame panel 8 uses the retaining ring 16 and the insertion rod 17 to drive the side panel 15 to move outward. The outward-moving side panel 15 causes the plate 2 to move away from the attenuator body 1, so that the connector 4 inside the inner groove of the attenuator body 1 can be quickly inspected, and the damaged connector 4 can be quickly repaired.

[0030] exist Figures 3 to 6In the embodiment, the inner side of the side plate 15 is fixed with a convex strip 18, the inner concave surface of the convex strip 18 is aligned with the outer side of the circumference of the connector 4, the outer side of the side plate 15 is fixed with a square rod 19, the inner end of the attached plate 2 is fixed with a plurality of convex plates 20, the plurality of side plates 15 correspond to the plurality of convex plates 20 one by one, the outer side of the square rod 19 corresponds to and penetrates the convex plate 20, and a round plate is fixed to the outer side of the square rod 19. Since the surface of the convex plate 20 is provided with a square groove corresponding to the square rod 19, the side plate 15 is prevented from rotating at the center of the convex plate 20 by using the square rod 19, the attached plate 2 is aligned with the end of the attenuator body 1, and the square rod 19 is pushed to slide inside the square groove of the convex plate 20, so that the insertion rod 17 at the end of the side plate 15 corresponds to the clamping ring 16 on the outer convex surface of the arc plate 9, so that the side plate 15 is conveniently plugged into the inner side of the clamping ring 16 by using the insertion rod 17. The movable sticking plate 2 utilizes the convex plate 20 and the square rod 19 to make the side plate 15 push the frame plate 8 to move inward. The inwardly moving frame plate 8 drives the side plate 15 close to the connecting head 4 under the limitation of the inclined rod 13. When the inner concave surface of the arc plate 9 fits with the outer side surface of the circumference of the connecting head 4, the inner concave surface of the convex strip 18 on the inner side surface of the side plate 15 fits with the outer side surface of the circumference of the connecting head 4. By utilizing the limited cooperation of multiple arc plates 9 and multiple convex strips 18, the connecting head 4 is horizontally located inside the inner groove of the attenuator body 1, which facilitates the correspondence between the outer end of the connecting head 4 and the inner end of the inner core 7, thereby avoiding the displacement of the connecting head 4 due to impact.

[0031] exist Figure 3 and Figure 6 In the embodiment, the surface of the pasting plate 2 is provided with a plurality of insertion holes 21, and a pressure plate 22 is inserted inside the insertion holes 21. A wedge is provided at the inner end of the pressure plate 22, and the inner side surface of the wedge corresponds to the outer side surface of the side plate 15. The outer side surface of the pressure plate 22 is flush with the outer side surface of the pasting plate 2, and the outer side surface of the pressure plate 22 is in contact with the inner side surface of the gear ring 11. The inner side surface of the wedge is set as an inclined surface, and the inclined surface corresponds to the outer side surface of the side plate 15. When the wedge moves inward under the drive of the pressure plate 22, the inward pressure plate 22 slides on the outer side surface of the side plate 15 using the inclined surface of the wedge. Since the insertion holes 21 of the pasting plate 2 limit the pressure plate 22, the inward pressure plate 22 squeezes the side plate 15 using the wedge. Under the movement and squeezing of the wedge, the clamping effect of the side plate 15 on the connector 4 using the convex strips 18 is further improved.

[0032] The inner side surface of the sticker 2 is close to the end surface of the attenuator body 1. At this time, when multiple side panels 15 use the convex strips 18 to limit the outer side of the connector 4, the spiral cooperation between the toothed ring 11 and the port 5 allows the toothed ring 11 to drive the pressure plate 22 to enter the inner groove. The moving pressure plate 22 uses the inner side surface of the wedge block to squeeze the outer side surface of the side panel 15. The movement of the wedge block is used to squeeze, so that the side panel 15 continues to approach the connector 4, thereby improving the corresponding effect between the inner core 7 and the connector 4.

[0033] Working principle of the present invention:

[0034] Reference Figures 1 to 6As shown, the pasting plate 2 is aligned with the end of the attenuator body 1, and the square rod 19 is pushed to slide inside the square groove of the convex plate 20, so that the insertion rod 17 at the end of the side plate 15 corresponds to the retaining ring 16 on the outer convex surface of the arc plate 9, which facilitates the side plate 15 to be inserted into the inner side of the retaining ring 16 using the insertion rod 17.

[0035] When the plate 2 is pushed close to the attenuator body 1, the plate 2 uses the convex plate 20 and the square rod 19 to make the side plate 15 close to the frame plate 8 until the side plate 15 is inserted into the inner side of the clamping ring 16 by the insertion rod 17. The plate 2 is pushed to move. When the moving plate 2 uses the convex plate 20 and the square rod 19 to make the side plate 15 push the frame plate 8 inward, the outer end of the frame plate 8 presses the spring 14 on the surface of the inclined rod 13 inside the side groove 12. Since the inclined rod 13 is inclined, the frame plate 8 moves inward while sliding on the surface of the inclined rod 13. The arc plate 9 on the inner end of the frame plate 8 gradually approaches the connector 4 until the inner side surface of the plate 2 fits with the end surface of the attenuator body 1. The inner concave surface of the arc plate 9 fits with the outer side surface of the circumference of the connector 4. The multiple frame plates 8 use the arc plate 9 to make the connector 4 horizontally inside the inner groove to prevent the connector 4 from tilting inside the inner groove.

[0036] And the inwardly moved frame plate 8 drives the side plate 15 to approach the connector 4 under the restriction of the inclined rod 13. When the inner concave surface of the arc plate 9 fits with the outer circumferential surface of the connector 4, the inner concave surface of the convex strip 18 on the inner side of the side plate 15 fits with the outer circumferential surface of the connector 4. By utilizing the restricted cooperation of multiple arc plates 9 and multiple convex strips 18, the connector 4 is horizontally located inside the inner groove of the attenuator body 1, so that the outer end of the connector 4 corresponds to the inner end of the inner core 7, thereby preventing the inner core 7 from deviating from the connector 4 during the plug-in process.

[0037] The inner side surface of the plate 2 is close to the end surface of the attenuator body 1. At this time, multiple side panels 15 use convex strips 18 to limit the outer side of the connector 4. Use multiple screws 3 to complete the installation of the plate 2, and insert the connecting end 6 into the outer side of the port 5. The inner core 7 at the center of the connecting end 6 corresponds to the port 5. The spiral cooperation between the toothed ring 11 and the port 5 allows the toothed ring 11 to drive the pressure plate 22 to enter the inner groove. The moving pressure plate 22 uses the inner side surface of the wedge block to squeeze the outer side surface of the side plate 15. The movement of the wedge block is used to squeeze, so that the side plate 15 continues to approach the connector 4, thereby improving the corresponding effect of the inner core 7 and the connector 4, and facilitating the external components to communicate with the attenuator body 1 via the inner core 7 and the connector 4.

[0038] After unscrewing the multiple screws 3 on the mounting plate 2, the elastic force of the spring 14 causes the frame plate 8 to move outward inside the side groove 12. The moving frame plate 8 drives the side plate 15 to move outward using the retaining ring 16 and the insertion rod 17. The outward-moving side plate 15 causes the mounting plate 2 to move away from the attenuator body 1, so that the connector 4 inside the inner groove of the attenuator body 1 can be quickly inspected, and the damaged connector 4 can be quickly repaired.

[0039] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A linear electrically adjustable attenuator, comprising an attenuator body (1), characterized in that: Both ends of the attenuator body (1) are provided with a plate (2), the plate (2) being fixedly mounted on the end of the attenuator body (1) by means of a plurality of screws 3, the end of the attenuator body (1) being provided with an inner groove, the center of the inner groove being provided with a connector (4), the center of the outer side of the plate (2) being provided with a port (5), the surface of the port (5) being sleeved with a connection end (6), the outer end of the connection end (6) being connected to a wire, the center of the inner end of the connection end (6) being provided with an inner core (7), the A through hole corresponding to the inner core (7) is provided at the center of the pasting plate (2); the inner end of the inner core (7) is plugged into the outer end of the connector (4) through the center of the port (5); a limiting component for limiting the connector (4) is provided inside the inner groove; the limiting component comprises a plurality of frame plates (8); an arc-shaped plate (9) is fixed to the inner end of the frame plate (8); the inner concave surface of the arc-shaped plate (9) is fitted with the outer circumferential surface of the connector (4); and the plurality of frame plates (8) all utilize the arc-shaped plate (9) to cooperate with and clamp the connector (4); The inner side wall of the inner groove is provided with a plurality of side grooves (12), an inclined rod (13) is fixed inside the side groove (12), and a spring (14) is sleeved on the surface of the inclined rod (13); The limiting component comprises a plurality of side plates (15), the plurality of side plates (15) surround the outer side of the connecting head (4), the plurality of side plates (15) correspond one-to-one with the plurality of frame plates (8), the side plates (15) are located between the frame plates (8) and the adhesive plate (2), a clamping ring (16) is fixed on both sides of the outer convex surface of the arc plate (9), two insertion rods (17) are fixed on the end surface of the side plate (15), the two insertion rods (17) correspond one-to-one with the two clamping rings (16), and the insertion rods (17) are correspondingly inserted into the inner side of the clamping ring (16), and the end surface of the side plate (15) is in contact with the outer side surface of the frame plate (8); The inner side surface of the side plate (15) is fixed with a convex strip (18), the inner concave surface of the convex strip (18) is connected to the outer side surface of the circumference of the connector (4), the outer side surface of the side plate (15) is fixed with a square rod (19), the inner end of the plate (2) is fixed with a plurality of convex plates (20), the plurality of side plates (15) correspond to the plurality of convex plates (20) in a one-to-one manner, the outer side ends of the square rods (19) pass through the convex plates (20), and the outer side ends of the square rods (19) are fixed with a round plate.

2. The linear electrically adjustable attenuator according to claim 1, characterized in that: A ring edge (10) is fixed to the inner side of the circumferential outer side surface of the connecting end (6), and a toothed ring (11) is rotatably sleeved on the inner side end of the connecting end (6). The outer side of the toothed ring (11) is rotatably sleeved on the outer side of the ring edge (10), and the inner side end of the toothed ring (11) is spirally sleeved on the circumferential outer side surface of the port (5), and the inner side surface of the toothed ring (11) is in contact with the outer side surface of the adhesive plate (2).

3. The linear electrically adjustable attenuator according to claim 2, characterized in that: The outer end of the frame plate (8) is slidably sleeved on the surface of the inclined rod (13), and the outer end of the frame plate (8) is inserted into the inner side of the side groove (12). One end of the spring (14) is connected to the inner side of the frame plate (8), and the other end of the spring (14) is connected to the inner side of the inner groove.

4. The linear electrically adjustable attenuator according to claim 3, characterized in that: The distance between the inner end of the inclined rod (13) and the center line of the connecting head (4) is smaller than the distance between the outer end of the inclined rod (13) and the center line of the connecting head (4), and when the frame plate (8) moves inwardly inside the side groove (12), the outer end of the moving frame plate (8) slides on the surface of the inclined rod (13).

5. The linear electrically adjustable attenuator according to claim 4, characterized in that: The surface of the sticking plate (2) is provided with a plurality of insertion holes (21), a pressing plate (22) is inserted into the insertion holes (21), a wedge block is provided at the inner end of the pressing plate (22), and the inner side surface of the wedge block corresponds to the outer side surface of the side plate (15).

6. The linear electrically adjustable attenuator according to claim 5, characterized in that: The outer end surface of the pressing plate (22) is flush with the outer end surface of the pasting plate (2), and the outer end surface of the pressing plate (22) is in contact with the inner side surface of the gear ring (11).

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