A filter for resisting radio wave signal interference

Abstract

The present invention belongs to the technical field of filters, and specifically relates to a filter for resisting radio wave signal interference, comprising a shell, an anti-interference coating is provided on the outer side of the shell, mounting plates are fixedly provided at both ends of the outer side of the shell, screw holes are provided at equal intervals on the opposite sides of the two mounting plates, a limiting groove is provided on the side of the mounting plate away from the shell, the limiting groove and the screw hole are interconnected, and the internal thread of the screw hole is connected with a screw rod. The present invention can position the mounting rod by the clamping of the clamping block and the annular clamping groove, thereby positioning the second connecting rod, and at the same time, the first nut is positioned by the mutual clamping of the positioning block on the second connecting rod and the positioning groove on the first nut, thereby reducing the probability of relative rotation between the first nut and the screw rod, thereby effectively reducing the frequency and probability of loosening between the first nut and the screw rod, making the connection between the screw rod and the first nut more firm, thereby ensuring the normal use of the filter.

Description

Technical Field

[0001] The invention belongs to the technical field of filters, and in particular relates to a filter capable of resisting interference from electric wave signals. Background Art

[0002] The filter is a filter circuit composed of capacitors, inductors and resistors. The filter can effectively filter out the frequency point of a specific frequency in the power line or the frequency outside the frequency point to obtain a power signal of a specific frequency, or eliminate the power signal after a specific frequency. In order to improve the filter's ability to resist radio wave signal interference, an anti-interference coating is generally applied on the filter housing.

[0003] Problems with existing technologies:

[0004] Traditional filters are generally installed on corresponding equipment through the cooperation of screws and nuts. At the same time, filters sometimes need to be installed outdoors. When the filter is installed outdoors, it is often windy outdoors. When it is windy, the filter may vibrate, causing the nut to rotate when the filter vibrates, and then the nut and the screw may become loose. In severe cases, the filter may no longer be installed firmly, affecting the normal use of the filter. Summary of the invention

[0005] The purpose of the present invention is to provide a filter that is resistant to radio wave signal interference, which can position the mounting rod by the clamping connection between the clamping block and the annular clamping groove, thereby positioning the second connecting rod, and at the same time positioning the first nut by the mutual clamping of the positioning block on the second connecting rod and the positioning groove on the first nut, thereby reducing the probability of relative rotation between the first nut and the screw rod, thereby effectively reducing the frequency and probability of loosening between the first nut and the screw rod, making the connection between the screw rod and the first nut more firm, thereby ensuring the normal use of the filter.

[0006] The technical solution adopted by the present invention is as follows:

[0007] A filter for resisting radio wave signal interference, comprising a shell, an anti-interference coating is arranged on the outer side of the shell, mounting plates are fixedly arranged at both ends of the outer side of the shell, screw holes are arranged at equal intervals on the opposite sides of the two mounting plates, a limiting groove is arranged on the side of the mounting plate away from the shell, the limiting groove and the screw hole are communicated with each other, a screw rod is threadedly connected to the inner thread of the screw hole, both ends of the screw rod extend to the outside of the screw hole, a first nut is threadedly connected to the outer wall of the screw rod, and a side of the first nut close to the shell contacts a side of the mounting plate away from the shell;

[0008] The cam is provided with a plurality of springs at two ends, and the springs are provided with a plurality of springs at the two ends of the plurality of springs. The plurality of springs are provided with a plurality of springs at two ends, and the plurality of springs are provided with a plurality of springs at two ends. The plurality of springs are provided with a plurality of springs at two ends, and the plurality of springs are provided with a plurality of springs at two ends.

[0009] The adjustment assembly includes a second nut, which is threadedly connected to one end of the outer wall of the mounting rod away from the mounting plate, and an annular groove is provided on the side of the second nut away from the mounting plate. The longitudinal section of the annular groove presents a "T"-shaped structure, and a T-shaped slider is slidably connected inside the annular groove. A push rod is fixedly provided at one end of the T-shaped slider away from the mounting plate, and a sliding block is fixedly provided at one end of the push rod away from the mounting plate.

[0010] One end of the sliding block close to the mounting rod extends to the inside of the mounting rod and is slidably connected to the inner wall of the mounting rod. The sliding block is symmetrically fixed with a first connecting rod at one end close to the mounting plate. The two first connecting rods are close to each other on one side and one end close to the mounting plate and are rotatably provided with a first ball.

[0011] A pressing rod is fixedly arranged on one side of the two clamping blocks close to the first rolling ball, and the pressing rod corresponds to the position of the first rolling ball.

[0012] The pushing assembly includes two second connecting rods, which are symmetrically fixed on the outside of the mounting rod. The second connecting rods are in an "L" shape. A through groove is provided inside the first nut at a position corresponding to the second connecting rod, and one end of the second connecting rod close to the first nut passes through the inside of the through groove.

[0013] A positioning groove is provided on one side of the first nut close to the mounting plate and at a position corresponding to the through groove. The positioning groove and the through groove are connected to each other. Positioning blocks are fixedly provided on two second connecting rods facing away from each other and at positions corresponding to the positioning groove. The positioning blocks are slidably engaged in the interior of the positioning groove.

[0014] A second ball is rotatably arranged at one end of the two clamping blocks which are away from each other, and the second ball is located inside the annular clamping groove.

[0015] One end of the screw rod close to the mounting plate extends to the inside of the mounting plate, and the limiting groove and the end of the screw rod are both regular hexagonal prism structures, and the limiting groove and the end of the screw rod are adapted to each other.

[0016] The technical effects achieved by the present invention are:

[0017] (1) During installation, the first nut is rotated, thereby driving the installation rod to move and rotate with the first nut through the pushing assembly. At this time, the installation rod drives the clamping block to move, so that the clamping block drives the second ball to move. At this time, the second ball contacts the inner wall of the installation rod and rotates. When it moves to a certain position, due to the action of the spring force, the clamping block drives the second ball to be clamped in the inside of the annular clamping groove, thereby positioning the installation rod, and then positioning the pushing assembly, so that the pushing assembly positions the first nut, avoiding relative rotation between the first nut and the screw, thereby reducing the probability of relative rotation between the first nut and the screw, and then effectively reducing the frequency and probability of loosening between the first nut and the screw, making the connection between the screw and the first nut more firm, thereby ensuring the normal use of the filter.

[0018] (2) When the first nut is rotated to move toward the mounting plate, the screw rod drives the second connecting rod to move with the first nut through the cooperation between the positioning groove and the positioning block, and the second connecting rod drives the mounting rod to move and rotate with the first nut. At this time, the mounting rod drives the clamping block to move, so that the clamping block drives the second ball to move. At this time, the second ball contacts the inner wall of the mounting rod and rotates, thereby realizing the above-mentioned positioning process of the first nut. At the same time, through the above-mentioned structure, the first nut can be further positioned by simply rotating the first nut, reducing the probability of relative rotation between the first nut and the screw rod, making the positioning of the first nut more concise and convenient, and facilitating the positioning of the first nut.

[0019] (3) When the block and the second ball move toward the inside of the screw, the second ball contacts the inner wall of the screw and rotates, thereby guiding the mounting rod through the second ball and reducing the friction between the mounting rod and the screw, making it easier for the mounting rod to move toward the inside of the screw, thereby facilitating the positioning of the first nut.

[0020] (4) The screw is limited by the cooperation between the limiting groove and one end of the screw, thereby preventing the screw from rotating during the rotation of the first nut, thereby facilitating the rotation of the first nut, and further facilitating the installation of the filter, thereby improving the installation efficiency of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front view diagram provided by an embodiment of the present invention;

[0022] Figure 2 The embodiments of the present invention provide Figure 1 The enlarged view of point A in the middle;

[0023] Figure 3is a schematic diagram of the connection structure between the limiting groove and the screw provided in an embodiment of the present invention;

[0024] Figure 4 is a side view of a mounting sheet provided by an embodiment of the present invention;

[0025] Figure 5 is a schematic diagram of the internal structure of a screw provided in an embodiment of the present invention;

[0026] Figure 6 The embodiments of the present invention provide Figure 5 The enlarged view of point B in the middle;

[0027] Figure 7 is a side view of a first nut provided by an embodiment of the present invention.

[0028] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0029] 1. Shell; 2. Mounting plate; 3. Limiting groove; 4. Screw hole; 5. Screw rod; 6. First nut; 7. Mounting rod; 8. Sliding block; 9. Push rod; 10. Second nut; 11. Annular slide groove; 12. T-shaped slider; 13. First connecting rod; 14. First ball; 15. Second connecting rod; 16. Through groove; 17. Positioning groove; 18. Positioning block; 19. Mounting cavity; 20. Spring; 21. Block; 22. Second ball; 23. Annular groove; 24. Press rod. DETAILED DESCRIPTION

[0030] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific embodiments of the present invention, and does not strictly limit the scope of protection of the specific claims of the present invention.

[0031] like Figure 1-7 As shown, a filter for resisting radio wave signal interference comprises a housing 1, an anti-interference coating is arranged on the outer side of the housing 1, mounting plates 2 are fixedly arranged at both ends of the outer side of the housing 1, screw holes 4 are arranged at equal intervals on the opposite sides of the two mounting plates 2, a limiting groove 3 is arranged on the side of the mounting plate 2 away from the housing 1, the limiting groove 3 and the screw hole 4 are communicated with each other, a screw rod 5 is threadedly connected to the inner part of the screw hole 4, both ends of the screw rod 5 extend to the outside of the screw hole 4, a first nut 6 is threadedly connected to the outer wall of the screw rod 5, and a side of the first nut 6 close to the housing 1 contacts a side of the mounting plate 2 away from the housing 1;

[0032] A mounting rod 7 is rotatably and slidingly provided at one end of the screw rod 5 away from the mounting plate 2, a mounting cavity 19 is provided at one end of the mounting rod 7 close to the mounting plate 2, a spring 20 is provided inside the mounting cavity 19, and blocks 21 are fixedly provided at both ends of the spring 20, the outer wall of the block 21 is slidably connected to the inner wall of the mounting rod 7, and the ends of the two blocks 21 facing away from each other extend to the outside of the mounting rod 7, an annular groove 23 is provided at the position of the inner wall of the screw rod 5 corresponding to the block 21, the ends of the two blocks 21 facing away from each other are rotatably engaged with the inside of the annular groove 23, an adjusting component is threadedly connected to one end of the outer wall of the mounting rod 7 away from the mounting plate 2, and a pushing component is symmetrically fixedly provided on the outer wall of the mounting rod 7.

[0033] According to the above structure, when installing, the first nut 6 is rotated, thereby driving the installation rod 7 to move and rotate with the first nut 6 through the pushing assembly. At this time, the installation rod 7 drives the block 21 to move, so that the block 21 drives the second ball 22 to move. At this time, the second ball 22 contacts the inner wall of the installation rod 7 and rotates. When it moves to a certain position, due to the elastic force of the spring 20, the block 21 drives the second ball 22 to be clamped in the inside of the annular groove 23, thereby positioning the installation rod 7, and then realizing the positioning of the pushing assembly, so that the pushing assembly positions the first nut 6, avoiding relative rotation between the first nut 6 and the screw rod 5, thereby reducing the probability of relative rotation between the first nut 6 and the screw rod 5, and then effectively reducing the frequency and probability of loosening between the first nut 6 and the screw rod 5, making the connection between the screw 5 and the first nut 6 more firm, thereby ensuring the normal use of the filter.

[0034] Refer to the attached Figure 5 and 6 The adjusting assembly includes a second nut 10, which is threadedly connected to the end of the outer wall of the mounting rod 7 away from the mounting plate 2. An annular groove 11 is provided on the side of the second nut 10 away from the mounting plate 2. The longitudinal section of the annular groove 11 is a "T"-shaped structure. A T-shaped slider 12 is slidably connected inside the annular groove 11. A push rod 9 is fixedly provided at one end of the T-shaped slider 12 away from the mounting plate 2. A sliding block 8 is fixedly provided at one end of the push rod 9 away from the mounting plate 2. The end of the sliding block 8 close to the mounting rod 7 extends to the inside of the mounting rod 7 and is slidably connected to the inner wall of the mounting rod 7. A first connecting rod 13 is symmetrically fixedly provided at one end of the sliding block 8 close to the mounting plate 2. A first ball 14 is rotatably provided on one end of the two first connecting rods 13 close to each other and close to the mounting plate 2. A pressing rod 24 is fixedly provided on one side of the two clamping blocks 21 close to the first ball 14, and the position of the pressing rod 24 corresponds to that of the first ball 14.

[0035] According to the above structure, when the first nut 6 needs to be disassembled, the second nut 10 is rotated so that the second nut 10 drives the push rod 9 and the sliding block 8 to move toward the direction close to the mounting plate 2, thereby causing the sliding block 8 to drive the first connecting rod 13 and the first ball 14 to move toward the direction close to the mounting plate 2, causing the first ball 14 to gradually press the pressing rod 24, causing the pressing rod 24 to drive the two clamping blocks 21 to move toward each other, and the spring 20 is compressed. At this time, the clamping block 21 and the second ball 22 are gradually pulled out from the inside of the annular groove 23, thereby releasing the positioning of the first nut 6 and the screw 5, making it easy to replace the screw 5.

[0036] Refer to the attached Figure 5 and 6 The pushing assembly includes two second connecting rods 15, which are symmetrically fixed on the outside of the mounting rod 7. The second connecting rods 15 are in an "L"-shaped structure. A through slot 16 is provided inside the first nut 6 at a position corresponding to the second connecting rod 15. One end of the second connecting rod 15 close to the first nut 6 passes through the inside of the through slot 16. A positioning slot 17 is provided on one side of the first nut 6 close to the mounting plate 2 and at a position corresponding to the through slot 16. The positioning slot 17 is connected to the through slot 16. A positioning block 18 is fixedly provided on the two second connecting rods 15 at a side facing away from each other and at a position corresponding to the positioning slot 17. The positioning block 18 is slidably engaged in the inside of the positioning slot 17.

[0037] According to the above structure, when the first nut 6 is rotated to move the first nut 6 in the direction close to the mounting plate 2, the screw rod 5 drives the second connecting rod 15 to move with the first nut 6 through the cooperation of the positioning groove 17 and the positioning block 18, and the second connecting rod 15 drives the mounting rod 7 to move and rotate with the first nut 6. At this time, the mounting rod 7 drives the clamping block 21 to move, so that the clamping block 21 drives the second ball 22 to move. At this time, the second ball 22 contacts the inner wall of the mounting rod 7 and rotates, thereby realizing the above-mentioned positioning process of the first nut 6. At the same time, through the above structure, it is only necessary to rotate the first nut 6 to further position the first nut 6, thereby reducing the probability of relative rotation between the first nut 6 and the screw rod 5, making the positioning of the first nut 6 more concise and convenient, and facilitating the positioning of the first nut 6.

[0038] Refer to the attached Figure 6 A second ball 22 is rotatably provided at one end of the two blocks 21 which are away from each other, and the second ball 22 is located inside the annular groove 23. When the block 21 and the second ball 22 move toward the inside of the screw 5, the second ball 22 contacts the inner wall of the screw 5 and rotates, thereby guiding the mounting rod 7 through the second ball 22 and reducing the friction between the mounting rod 7 and the screw 5, making it easier for the mounting rod 7 to move toward the inside of the screw 5, thereby facilitating the positioning of the first nut 6.

[0039] Refer to the attached Figure 4 , one end of the screw rod 5 close to the mounting plate 2 extends to the inside of the mounting plate 2, and the limiting groove 3 and the end of the screw rod 5 are both regular hexagonal prism structures, and the limiting groove 3 and the end of the screw rod 5 are adapted to each other. The screw rod 5 is limited by the mutual cooperation between the limiting groove 3 and one end of the screw rod 5, thereby preventing the screw rod 5 from rotating during the rotation of the first nut 6, thereby facilitating the rotation of the first nut 6, and then facilitating the installation of the filter, thereby improving the installation efficiency of the filter.

[0040] The working principle of the present invention is:

[0041] (1) When installing the filter, insert the screw rod 5 into the screw hole 4 so that the end of the screw rod 5 close to the mounting plate 2 is clamped into the limiting groove 3. After the insertion is completed, the first nut 6 is sleeved on the outer side of the screw rod 5 so that the second connecting rod 15 is clamped into the through groove 16, and the positioning block 18 is clamped into the positioning groove 17.

[0042] (2) At this time, the first nut 6 is rotated to make the first nut 6 move on the outer wall of the screw rod 5 toward the direction close to the mounting plate 2. At this time, the screw rod 5 drives the second connecting rod 15 to move with the first nut 6 through the cooperation of the positioning groove 17 and the positioning block 18. The second connecting rod 15 drives the mounting rod 7 to move and rotate with the first nut 6. At this time, the mounting rod 7 drives the clamping block 21 to move, so that the clamping block 21 drives the second ball 22 to move. At this time, the second ball 22 contacts the inner wall of the mounting rod 7 and rotates. When it moves to a certain position, due to the elastic force of the spring 20, the clamping block 21 drives the second ball 22 to be clamped in the inside of the annular clamping groove 23, thereby positioning the mounting rod 7, and then realizing the positioning of the second connecting rod 15, so that the second connecting rod 15 can position the first nut 6 through the cooperation of the positioning block 18 and the positioning groove 17, avoiding relative rotation between the first nut 6 and the screw rod 5;

[0043] (3) When the first nut 6 needs to be disassembled, the second nut 10 is rotated so that the second nut 10 drives the push rod 9 and the sliding block 8 to move toward the mounting plate 2, thereby causing the sliding block 8 to drive the first connecting rod 13 and the first ball 14 to move toward the mounting plate 2, causing the first ball 14 to gradually press the pressing rod 24, causing the pressing rod 24 to drive the two clamping blocks 21 to move toward each other, and the spring 20 is compressed. At this time, the clamping block 21 and the second ball 22 are gradually pulled out from the inside of the annular groove 23, thereby releasing the positioning of the first nut 6 and the screw 5, making it easier to replace the screw 5.

[0044] The above is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art unless otherwise specified and limited.

Claims

1. A filter for resisting radio wave signal interference, comprising a housing (1), characterized in that: The outer side of the shell (1) is provided with an anti-interference coating, and mounting plates (2) are fixedly provided at both ends of the outer side of the shell (1), and screw holes (4) are provided at equal intervals on opposite sides of the two mounting plates (2), and a limiting groove (3) is provided on a side of the mounting plate (2) away from the shell (1), and the limiting groove (3) and the screw hole (4) are communicated with each other, and a screw rod (5) is connected to the inner thread of the screw hole (4), and both ends of the screw rod (5) extend to the outside of the screw hole (4), and a first nut (6) is connected to the outer wall of the screw rod (5) through a thread, and a side of the first nut (6) close to the shell (1) contacts a side of the mounting plate (2) away from the shell (1); A mounting rod (7) is rotatably and slidably arranged at one end of the screw rod (5) away from the mounting plate (2), a mounting cavity (19) is provided at one end of the mounting rod (7) close to the mounting plate (2), a spring (20) is provided inside the mounting cavity (19), and clamping blocks (21) are fixedly arranged at both ends of the spring (20), the outer wall of the clamping block (21) is slidably connected to the inner wall of the mounting rod (7), and the ends of the two clamping blocks (21) that are separated from each other extend to the outside of the mounting rod (7), an annular clamping groove (23) is provided at a position of the inner wall of the screw rod (5) corresponding to the clamping block (21), and the ends of the two clamping blocks (21) that are separated from each other are rotatably clamped with the inside of the annular clamping groove (23), an end of the outer wall of the mounting rod (7) away from the mounting plate (2) is threadedly connected to an adjustment component, and a pushing component is symmetrically and fixedly arranged on the outer wall of the mounting rod (7); The adjustment assembly comprises a second nut (10), the second nut (10) being threadedly connected to an end of the outer wall of the mounting rod (7) away from the mounting plate (2), an annular groove (11) being provided on a side of the second nut (10) away from the mounting plate (2), the annular groove (11) having a longitudinal section in a "T"-shaped structure, a T-shaped slider (12) being slidably connected inside the annular groove (11), a push rod (9) being fixedly provided at one end of the T-shaped slider (12) away from the mounting plate (2), and a sliding block (8) being fixedly provided at one end of the push rod (9) away from the mounting plate (2); The pushing assembly comprises two second connecting rods (15), the two second connecting rods (15) are symmetrically fixedly arranged on the outside of the mounting rod (7), the second connecting rods (15) are in an "L"-shaped structure, a through slot (16) is provided at a position inside the first nut (6) corresponding to the second connecting rod (15), and an end of the second connecting rod (15) close to the first nut (6) passes through the inside of the through slot (16); A positioning groove (17) is provided on one side of the first nut (6) close to the mounting plate (2) and at a position corresponding to the through groove (16); the positioning groove (17) and the through groove (16) are communicated with each other; positioning blocks (18) are fixedly provided on one side of the two second connecting rods (15) facing away from each other and at positions corresponding to the positioning grooves (17); the positioning blocks (18) are slidably engaged in the interior of the positioning grooves (17).

2. The filter for resisting radio wave signal interference according to claim 1, characterized in that: One end of the sliding block (8) close to the mounting rod (7) extends to the inside of the mounting rod (7) and is slidably connected to the inner wall of the mounting rod (7); one end of the sliding block (8) close to the mounting plate (2) is symmetrically fixed with a first connecting rod (13); two first connecting rods (13) are rotatably provided with a first ball (14) at one end close to each other and close to the mounting plate (2).

3. The filter for resisting radio wave signal interference according to claim 2, characterized in that: A pressing rod (24) is fixedly provided on one side of the two clamping blocks (21) close to the first rolling ball (14), and the position of the pressing rod (24) corresponds to that of the first rolling ball (14).

4. The filter for resisting radio wave signal interference according to claim 1, characterized in that: A second ball (22) is rotatably provided at one end of the two clamping blocks (21) that is away from each other, and the second ball (22) is located inside the annular clamping groove (23).

5. The filter for resisting radio wave signal interference according to claim 1, characterized in that: One end of the screw rod (5) close to the mounting plate (2) extends to the interior of the mounting plate (2), and the limiting groove (3) and the end of the screw rod (5) both present a regular hexagonal prism structure, and the limiting groove (3) and the end of the screw rod (5) are adapted to each other.

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