Filter

Abstract

The utility model discloses a filter, and particularly relates to the technical field of radio frequency devices, the filter mainly comprises two input terminals and a power-on terminal located above the two input terminals, one end portion of the power-on terminal is provided with a filter body welded with the two input terminals, and a linkage locking assembly is installed in front of the filter body; the linkage locking assembly comprises a guide frame installed in front of the filter body, two symmetrically-arranged threaded sleeve frames are installed on the inner wall of the guide frame, and locking screws rotationally connected with the guide frame are arranged on the inner walls of the threaded sleeve frames. According to the utility model, the linkage locking assembly is adopted to enable the linkage pressing plate to drive the butt joint wire end protruding ring to be extruded on the input terminal, and the butt joint wire end on the output terminal, the butt joint wire end on the power-on terminal and the butt joint wire end on the input terminal can be synchronously extruded and locked, so that the butt joint efficiency is effectively improved; and the locking firmness is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of radio frequency devices, and more specifically, to a filter. Background Art

[0002] The filter principle on the shielding device and metal detector is mainly based on the core function of the filter, that is, selectively transmitting or blocking signals of different frequencies. In the shielding device, the filter may be used to eliminate interference frequency components to ensure the normal operation of the shielding device, while the metal detector detects metal by emitting electromagnetic fields and receiving electromagnetic signals fed back by objects. Therefore, the filter is particularly important when used on the shielding device and metal detector; in the existing public literature, the utility model patent of Chinese patent publication number CN219371318U discloses a filter housing and a filter. The patent mainly makes the local area of ​​the substrate bulge inward to form a base and coupling ribs, and makes the area corresponding to the base and coupling ribs on the outside of the substrate concave to form a cavity, thereby effectively reducing the heavy feeling of the base and coupling ribs, and effectively reducing the total weight of the substrate and its base and coupling ribs, which can be conducive to the lightweight and simplification of the filter product. However, the filter still has the following defects;

[0003] During the use of filters in shielding instruments and metal detectors, multiple wire ends need to be connected to the filter, and each wire end is connected by snap-fit ​​or threading after connection. However, snap-fitting will cause looseness during later use, and threading requires a wire end to be rotated multiple times, and the connection efficiency is low, which requires a filter. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a filter.

[0005] To achieve the above object, the utility model provides the following technical solution: a filter, comprising two input terminals and a power-on terminal located above the two input terminals, one end of the power-on terminal is provided with a filter body welded to the two input terminals, and a linkage locking assembly is installed in front of the filter body;

[0006] The linkage locking assembly includes a guide frame installed in front of the filter body, and two symmetrically arranged threaded sleeves are installed on the inner wall of the guide frame, and the inner wall of the threaded sleeve is provided with a locking screw rotatably connected to the guide frame; the top ends of the two threaded sleeves are fixedly connected with a linkage pressure plate, and the two threaded sleeves are threadedly connected to the locking screws, and the two threads on the outer wall of the locking screws are opposite and symmetrically opened, and the two threaded sleeves are horizontally slidably connected along the inner wall of the guide frame, the filter body and the guide frame are welded and fixed, and the inner wall of the guide frame is polished and ground, and the guide frame is made of stainless steel.

[0007] Preferably, two symmetrically arranged output terminals are installed on the other side of the filter body, and the two output terminals are welded to the filter body. Two positioning grooves are embedded in the top of the linkage pressure plate, and a lateral groove is embedded in one side of the linkage pressure plate; the interiors of the positioning grooves and the lateral grooves are provided with slidingly connected docking terminals.

[0008] A filter according to claim, characterized in that: a reinforcing plate is fixedly connected to the top of the filter body; a rotating cap for rotating the locking screw is provided on one side of the guide frame, and the rotating cap and the locking screw are integrally formed by die casting.

[0009] According to the above technical solution, the operator rotates the rotating cap to drive the locking screw to rotate inside the guide frame. The locking screw drives the two threaded sleeves to approach each other along the inner wall of the guide frame under the action of the thread. The linkage pressure plate drives the protruding ring of the docking terminal to be squeezed on the input terminal. The docking terminals on the output terminals, the docking terminals on the power terminals, and the docking terminals on the input terminals can all be synchronously extruded and locked.

[0010] Preferably, a limit block is fixedly connected to the top of the guide frame and located on one side of the threaded sleeve, and a limit support assembly is provided on one side of the limit block; the limit support assembly includes a support block and an inclined block and two arc-shaped support bars arranged in sequence from right to left on one side of the limit block, the bottom end of the support block is welded to the top of the guide frame, and the support bottom block is fixedly connected to the arc-shaped support bar and the support block respectively; the bottom end of the inclined block is integrally formed with a support bottom block by die-casting.

[0011] According to the above technical solution, the threaded sleeve is squeezed at the right side of the limit block, and supports the tilting block by supporting the bottom block. The two arc-shaped supports provide supporting force for the tilting block, and the support block provides supporting force for the limit block. During the movement, the threaded sleeve can accurately limit the position and drive the linkage pressure plate to be squeezed on the docking terminal to complete the locking.

[0012] Technical effects and advantages of the utility model:

[0013] 1. A linkage locking assembly is provided so that the locking screw drives the two threaded sleeves to approach each other along the inner wall of the guide frame under the action of the thread, and the linkage pressing plate drives the protruding ring of the butt joint connector to be squeezed on the input terminal. The butt joint connector on the output terminal, the butt joint connector on the power-on terminal, and the butt joint connector on the input terminal can all be synchronously squeezed and locked, which not only effectively improves the docking efficiency, but also effectively improves the firmness of the linkage locking in later use;

[0014] 2. Use the limit support assembly to squeeze the threaded sleeve to the right side of the limit block, support the tilting block through the support bottom block, and the two arc-shaped support bars provide support force for the tilting block to accurately limit the threaded sleeve to avoid damage caused by over-tight connection between the butt joint and the power terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model provides a main structural schematic diagram of a filter.

[0016] Figure 2 It is a schematic diagram of the partial structure of the connection between the guide frame and the threaded sleeve of the utility model.

[0017] Figure 3 The utility model is a schematic diagram of a filter splitting structure.

[0018] Figure 4 It is a schematic diagram of the partial structure of the connection between the support block and the guide frame of the utility model.

[0019] Figure 5 It is a schematic diagram of the structure of the position limiting support assembly of the utility model.

[0020] The accompanying drawings are marked as follows: 1. input terminal; 2. power terminal; 3. filter body; 4. output terminal; 5. guide frame; 6. threaded sleeve; 7. locking screw; 8. linkage pressure plate; 9. positioning groove; 10. lateral groove; 11. docking terminal; 12. rotating cap; 13. reinforcement plate; 14. limit block; 15. support block; 16. tilting block; 17. support bottom block; 18. arc-shaped support bar. DETAILED DESCRIPTION

[0021] 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.

[0022] As attached Figure 1-5 A filter is shown, and a linkage locking assembly is arranged on the filter. The arrangement of the linkage locking assembly not only effectively improves the docking efficiency, but also effectively improves the linkage locking firmness during later use. The specific structure of the linkage locking assembly is arranged as follows:

[0023] In this embodiment, as shown in the attached Figure 1-3As shown, a linkage locking assembly is installed in front of the filter body 3; the linkage locking assembly includes a guide frame 5 installed in front of the filter body 3, and two symmetrically arranged threaded sleeves 6 are installed on the inner wall of the guide frame 5, and the inner wall of the threaded sleeve 6 is provided with a locking screw 7 rotatably connected to the guide frame 5; the top ends of the two threaded sleeves 6 are fixedly connected to a linkage pressing plate 8;

[0024] The operating principle of the filter in this embodiment is that the operator first fixes the filter body 3 to the internal position of the shielding instrument by bolts. After fixing the filter body 3, the three docking connectors 11 on the right are respectively plugged into the outer walls of the power-on terminal 2 and the two input terminals 1, and the two docking connectors 11 on the left are plugged into the outer walls of the two output terminals 4, so that the docking connector 11 can be connected to the output end of the shielding instrument, and the two docking connectors 11 at the position of the output terminal 4 can be connected to the input end of the shielding instrument again;

[0025] Secondly, the operator rotates the rotating cap 12 to drive the locking screw 7 to rotate inside the guide frame 5. The locking screw 7 drives the two threaded sleeves 6 to approach each other along the inner wall of the guide frame 5 under the action of the thread. At the same time, the two threaded sleeves 6 respectively drive the two linkage pressure plates 8 to approach each other. The linkage pressure plate 8 drives the protruding ring of the docking connector 11 to be squeezed on the input terminal 1. The docking connector 11 on the output terminal 4 and the docking connector 11 on the power terminal 2, as well as the docking connector 11 on the input terminal 1 can complete synchronous extrusion and locking. Then the operator transmits the signal through the docking connector 11 and the signal is transmitted to the filter body 3 by the input terminal 1. The filter body 3 selectively transmits or blocks signals of different frequencies, and transmits the shielded signal to the docking connector 11 through the output terminal 4 to feed back to the shielding instrument.

[0026] In this embodiment, as shown in the attached Figure 1-3As shown, two symmetrically arranged output terminals 4 are installed on the other side of the filter body 3, and the two output terminals 4 are welded to the filter body 3, so that the shielded signal can be transmitted to the docking terminal 11 through the output terminal 4 and fed back to the shielding instrument, so that the shielded signal output operation can be realized. The top of the linkage pressure plate 8 is embedded with two positioning grooves 9, and a lateral groove 10 is embedded on one side of the linkage pressure plate 8; the interior of the positioning groove 9 and the lateral groove 10 is provided with a slidingly connected docking terminal 11, so that the two docking terminals 11 can be docked to the positioning groove 9, the side docking terminal 11 is docked to the position of the lateral groove 10, and the lateral groove 10 and the positioning groove 9 can play a docking and positioning role for different docking terminals 11. The top of the filter body 3 is fixedly connected with a reinforcement plate 13; one side of the guide frame 5 is provided with a rotating cap 12 for rotating the locking screw 7, and the rotating cap 12 and the locking screw 7 are integrated by die-casting, so that during operation, the reinforcement plate 13 plays a reinforcing and supporting role for the top of the filter body 3, and at the same time, the rotating cap 12 drives the locking screw 7 to rotate stably inside the guide frame 5.

[0027] In this embodiment, as shown in the attached Figure 4-5 As shown, the top of the guide frame 5 and the position on one side of the threaded sleeve 6 are fixedly connected to a limit block 14, and one side of the limit block 14 is provided with a limit support assembly; the limit support assembly includes a support block 15 and a tilting block 16 and two arc-shaped support bars 18 arranged in sequence from right to left on one side of the limit block 14, the bottom end of the support block 15 is welded to the top of the guide frame 5, and the support bottom block 17 is fixedly connected to the arc-shaped support bar 18 and the support block 15 respectively; the bottom end of the tilting block 16 is integrally formed with the support bottom block 17 by die-casting;

[0028] According to the upper structure, when the threaded sleeve 6 is limited, when the threaded sleeve 6 moves along the inside of the guide frame 5, the threaded sleeve 6 is squeezed at the right side of the limit block 14, and the tilting block 16 is supported by the supporting bottom block 17. The two arc-shaped support bars 18 provide supporting force for the tilting block 16. The tilting block 16 can provide reinforcing support force for the support block 15. The support block 15 provides supporting force for the limit block 14, and the limit block 14 plays a limiting supporting role for the moving position of the threaded sleeve 6. The threaded sleeve 6 can accurately limit the position during the movement and drive the linkage pressure plate 8 to be squeezed on the docking terminal 11. The docking and extrusion of the docking terminal 11 and the power-on terminal 2 can achieve precise limiting locking.

[0029] The contents not described in detail in the specification belong to the prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used. In this technical solution, the electrical control components not mentioned are not shown in the figure because they belong to the prior art and will not be described here.

[0030] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A filter, comprising two input terminals (1) and a power-on terminal (2) located above the two input terminals (1), wherein one end of the power-on terminal (2) is provided with a filter body (3) welded to the two input terminals (1), characterized in that: A linkage locking assembly is installed in front of the filter body (3); The linkage locking assembly comprises a guide frame (5) installed in front of the filter body (3), and the inner wall of the guide frame (5) is installed with two symmetrically arranged threaded sleeves (6), and the inner wall of the threaded sleeve (6) is provided with a locking screw (7) rotatably connected to the guide frame (5); The top ends of the two threaded sleeves (6) are both fixedly connected with a linkage pressing plate (8).

2. A filter according to claim 1, characterized in that: The two threaded sleeves (6) are both threadedly connected to the locking screw (7), the outer wall of the locking screw (7) has two threads that are opposite and symmetrically arranged, and the two threaded sleeves (6) are both horizontally slidably connected along the inner wall of the guide frame (5).

3. A filter according to claim 1, characterized in that: The filter body (3) and the guide frame (5) are fixed by welding, and the inner wall of the guide frame (5) is polished and ground; the guide frame (5) is made of stainless steel.

4. A filter according to claim 1, characterized in that: Two symmetrically arranged output terminals (4) are installed on the other side of the filter body (3), and the two output terminals (4) are both welded to the filter body (3).

5. A filter according to claim 1, characterized in that: The top end of the linkage pressure plate (8) is embedded with two positioning grooves (9), and one side of the linkage pressure plate (8) is embedded with a lateral groove (10); The interiors of the positioning groove (9) and the lateral groove (10) are both provided with slidingly connected butt joints (11).

6. A filter according to claim 1, characterized in that: A reinforcing plate (13) is fixedly connected to the top end of the filter body (3); A rotating cap (12) for rotating the locking screw (7) is provided on one side of the guide frame (5), and the rotating cap (12) and the locking screw (7) are integrally formed by die-casting.

7. A filter according to claim 1, characterized in that: A limiting block (14) is fixedly connected to the top end of the guide frame (5) and located at one side of the threaded sleeve (6), and a limiting support assembly is provided on one side of the limiting block (14); The position-limiting support assembly comprises a support block (15) and a tilting block (16) and two arc-shaped support bars (18) arranged in sequence from right to left on one side of the position-limiting block (14); the bottom end of the support block (15) is welded to the top end of the guide frame (5); the bottom end of the tilting block (16) is integrally formed with a support bottom block (17) by die-casting; the support bottom block (17) is respectively fixedly connected to the arc-shaped support bar (18) and the support block (15).

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