Brush wire device

Abstract

The utility model discloses a brush wire device, which belongs to the technical field of rotary transmission and is used for solving the technical problem that the electromagnetic interference suffered by the existing rotary connector is larger. The wire brushing device comprises a shielding shell, a shielding cavity, a wire clamping opening and an isolation pad, the shielding shell comprises a shell body and a cover body, the shielding cavity is located between the shell body and the cover body, a first through hole is formed in the bottom of the shell body, an isolation protruding ring is arranged on one face of the isolation pad, and the isolation protruding ring penetrates through the first through hole. According to the brush wire device, surrounding electromagnetic interference can be effectively shielded, the stability of signal transmission in the transmission process is improved, standardized production of products is facilitated, and the quality and reliability of the products are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of rotary transmission and relates to a brush wire device. Background Art

[0002] The use of electrical slip rings for rotary signal transmission is a common technology in the communications field. As Gigabit Ethernet transmission continues to increase in speed and bandwidth, the demands on wiring and interference resistance are becoming increasingly stringent. Current rotary connectors utilize bare wires for direct connections, making them susceptible to significant electromagnetic interference. This can lead to signal loss during the cable and wire transfer process, impacting signal transmission quality and product reliability. Utility Model Content

[0003] In view of the above analysis, the present invention aims to provide a brush device to solve the technical problem that the current rotary connector is subject to significant electromagnetic interference.

[0004] The purpose of this utility model is mainly achieved through the following technical solutions.

[0005] The utility model provides a wire brush device, comprising a shielding shell, a shielding cavity, a wire clamping port and an isolation pad;

[0006] The shielding shell includes a shell and a cover, and the cover is fixed at the opening of the shell;

[0007] The shielding cavity is located between the shell and the cover, and is used to arrange the PCB board to complete the conversion between the brush wire and the shielded network cable;

[0008] The cable opening is located on one side of the shielding shell and is used to pass the shielded network cable.

[0009] The bottom of the shell is provided with a first through hole;

[0010] The isolation pad is located in the shielding cavity and is used to isolate the PCB board from the shielding shell;

[0011] An isolation convex ring is provided on one side of the isolation pad. The isolation convex ring passes through the first through hole and is used to isolate the brush filaments from the shell.

[0012] Furthermore, a first wire clamping boss and a second wire clamping boss are respectively provided on one side of the shell body and the cover body, and the wire clamping opening is located between the first wire clamping boss and the second wire clamping boss.

[0013] Furthermore, the wire clamping opening is a cylindrical opening and the diameter thereof is the same as the outer diameter of the shielded network cable.

[0014] Furthermore, the cylindrical surface where the wire clamping opening is located is tangent to the surface of the PCB board and the inner surface of the cover.

[0015] Furthermore, the first through holes include at least one column.

[0016] Furthermore, the direction of the wire clamping opening is parallel to the arrangement direction of the first through holes.

[0017] Furthermore, threaded holes are provided on both sides of the bottom of the shell for fixed connection with the PCB board.

[0018] Furthermore, mounting holes are correspondingly arranged on both sides of the shell and the cover, and the mounting holes are used to be fixedly connected to the rotation transmission device.

[0019] Furthermore, the inner diameter of the first through hole matches the outer diameter of the isolation protruding ring.

[0020] Furthermore, the inner diameter of the isolation convex ring matches the outer diameter of the brush filament.

[0021] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0022] 1. The brush device of the present invention can shield external electromagnetic interference by providing a shielding shell and a shielding cavity between the shell and the cover, effectively reducing signal loss and electromagnetic interference, and can also facilitate the standardized production of the brush device and improve product quality and reliability.

[0023] 2. The brush wire device of the present invention arranges the PCB board in the shielding cavity, so that the conversion between the brush wire and the shielding wire is completed in the shielding cavity, which can effectively shield the surrounding electromagnetic interference, improve the stability of signal transmission during the transmission process, reduce signal loss during the transmission process, and achieve the beneficial effect of more stable transmission rate and bandwidth.

[0024] 3. The brush device of the present invention can isolate the housing from the PCB and the brush by providing an isolation pad, thereby avoiding signal loss during transmission.

[0025] 4. The wire brush device of the present invention can limit and fix the network cable by setting the wire clamping port, thereby preventing the shielded network cable from falling off and improving the stability and reliability of signal transmission quality.

[0026] In the present invention, the above-mentioned technical solutions can be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the subsequent description, and some advantages will become apparent from the description or be understood through practice of the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the embodiments of the description and the contents particularly pointed out in the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic cross-sectional view of a brush device according to an embodiment of the present invention;

[0028] Figure 2 This is a schematic structural diagram of a housing according to an embodiment of the present utility model;

[0029] Figure 3 This is a side structural diagram of a brush device according to an embodiment of the present invention;

[0030] Figure 4 This is a bottom view of the structure of the brush device according to an embodiment of the utility model;

[0031] Figure 5 This is a schematic diagram of the internal structure of the brush device with the cover removed according to an embodiment of the utility model.

[0032] Reference numerals:

[0033] 1-shielding shell; 11-housing; 111-first through hole; 112-first wire clamping boss; 113-threaded hole; 114-first mounting hole; 115-second mounting hole; 12-cover; 121-second wire clamping boss; 122-third mounting hole; 2-shielding cavity; 3-wire clamping port; 4-isolating pad; 41-isolating convex ring; 5-PCB board; 51-copper foil; 6-brush wire; 7-shielded network cable; 8-first screw; 9-second screw. DETAILED DESCRIPTION

[0034] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, and are not used to limit the scope of the present invention.

[0035] like Figure 1 As shown, this embodiment provides a brush device, including a shielding shell 1, a shielding cavity 2, a wire clamping port 3 and an isolation pad 4; the shielding shell 1 includes a shell 11 and a cover 12; the shell 11 and the cover 12 are fixedly connected, and the shielding cavity 2 is located between the shell 11 and the cover 12, which is a relatively closed space for arranging a PCB board 5 to complete the conversion of the brush 6 and the network cable 7; the wire clamping port 3 is opened on one side of the shielding shell 1 for passing the shielded network cable.

[0036] The brush device of this embodiment can effectively reduce signal loss and electromagnetic interference, is conducive to standardized production of products, and improves product quality and reliability.

[0037] like Figure 2As shown, the housing 11 is a cubic metal housing with one side open. The bottom of the housing 11 is provided with first through-holes 111. The number of first through-holes 111 matches the number of brush filaments 6, allowing the brush filaments 6 to pass through. For example, the first through-holes 111 are arranged in two rows, one on each side of the bottom of the housing 11. Threaded holes 113 are also provided on either side of the two rows of first through-holes 111 for secure connection to the PCB 5 via the second screws 9.

[0038] like Figure 2 As shown, a first mounting hole 114 and a second mounting hole 115 are respectively provided on both sides of the opening of the shell 11. The first mounting hole 114 is used for fixed connection with the cover 12, and the second mounting hole 115 is used for fixing the module on the transmission device.

[0039] like Figure 3 As shown, cover 12 is a metal cover plate that matches the opening of housing 11. Cover 12 is provided with third mounting holes 122 corresponding to first mounting holes 114, for securely connecting to the transmission device and housing 11 via screws. Cover 12 also has through-holes (not shown) corresponding to second mounting holes 115, for securely connecting to housing 11 via first screws 8. After installation, shielding cavity 2 between housing 11 and cover 12 becomes a relatively enclosed space, thereby shielding against external electromagnetic interference.

[0040] like Figure 1 and Figure 4 As shown, a first wire-clamping boss 112 and a second wire-clamping boss 121 are respectively provided on one side of the housing 11 and the cover 12, with the wire-clamping opening 3 located between the first wire-clamping boss 112 and the second wire-clamping boss 121. The wire-clamping opening 3 is a cylindrical opening that communicates with the shielding cavity 2 and is used to arrange the connector of the shielded network cable 7. Preferably, the diameter of the wire-clamping opening 3 is the same as the outer diameter of the shielded network cable 7, which can be used to clamp and limit the shielded network cable 7 and prevent the shielded network cable 7 from loosening.

[0041] Exemplarily, the wire clamping opening 3 is located at the center of one side of the shielding shell 1 , and the opening direction is consistent with the arrangement direction of the first through holes 111 to facilitate the wiring of each network cable in the shielding network cable 7 on the PCB board 5 .

[0042] In order to further facilitate the wiring of the shielded network cable 7 on the PCB board, the position of the wire clamping opening 3 is opposite to the cavity between the PCB board 5 and the cover body 12. The cylindrical surface where the wire clamping opening 3 is located is tangent to the surface of the PCB board 5 and the inner surface of the cover body 12, which can shorten the wiring distance of the shielded network cable 7 and save space in the shielding cavity 2.

[0043] like Figure 1As shown, the isolation pad 4 is located in the shielding cavity 2 and is made of insulating material. An isolation convex ring 41 is provided on one side of the isolation pad 4. The number and position of the isolation convex ring 41 are consistent with the first through hole 111, and the outer diameter of the isolation convex ring 41 matches the inner diameter of the first through hole 111. An isolation through hole (not shown in the figure) is provided in the center of the isolation convex ring 41 for passing the brush 6. During assembly, after the isolation convex ring 41 is correspondingly inserted into the first through hole 111, the isolation pad 4 is pressed against the bottom of the shell 11. The isolation pad 4 serves to isolate the shell 11 and the PCB board 5, and the isolation convex ring 41 serves to isolate the shell 11 and the brush 6.

[0044] Figure 5 The internal structure of the brush device of this embodiment after the cover 12 is removed. Figure 5 As shown, solder holes are provided on both sides of the PCB 5, corresponding to the positions of the first through-holes 111. One side of the PCB 5 is attached to the isolation pad 4, while the other side is provided with multiple strips of copper foil 51, each connecting two opposing solder holes. Mounting holes are also provided on both sides of the PCB 5, corresponding to the positions of the threaded holes 113. Second screws 9 are inserted through the mounting holes to secure the PCB 5 to the housing 11.

[0045] like Figure 1 As shown, one end of the brush filament 6 is welded to the PCB board 5, and the other end passes through the through holes of the PCB board 5, the isolation pad 4 and the housing 11 in sequence. The passing length L is set according to the needs of the rotating device.

[0046] like Figure 1 and Figure 5 As shown, the connection terminal of the shielded network cable 7 is placed in the wire clamping port 3, and the multiple groups of shielded wires in the shielded network cable 7 are respectively welded to the PCB board 5 and correspond to each path of the brush wire 6.

[0047] For example, Figure 5 As shown, 9 rows of copper foil are provided on the PCB board 5, and each row of brush wires 6 has 9 brush wires, which pass through the soldering holes on both sides of the PCB board 5 and are soldered; the shielded network cable 7 has 4 groups of twisted pair wires and a ground wire inside, where each twisted pair wire corresponds to each brush wire 6 and is then soldered to the PCB board 5, and the ground wire is soldered to the copper foil in the middle of the PCB board 5, thereby realizing the conversion between the network cable and the brush wire in the rotary transmission device. Figure 1 and Figure 5 Only a schematic diagram of soldering one set of twisted pair wires to the PCB board 5 is given.

[0048] For example, the diameter of the first through hole 111 is 1.25 mm, the outer diameter of the isolation protruding ring 41 is 1 mm, the inner diameter is 0.6 mm, and the diameter of the brush filament 6 is 50.5 filaments.

[0049] This embodiment can effectively shield the surrounding electromagnetic interference by converting between the brush wire 6 and the shielded network cable 7 in the shielding cavity 2, thereby improving the stability of signal transmission during transmission, reducing signal loss during transmission, and achieving the beneficial effect of more stable transmission rate and bandwidth; at the same time, this embodiment is conducive to standardized production of products and improves product quality and reliability by setting modular network transmission brush wires.

[0050] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in the present invention should be covered by the protection scope of the present invention.

Claims

1. A brush device, characterized in that: It comprises a shielding shell (1), a shielding cavity (2), a wire clamping opening (3) and an isolation pad (4); The shielding shell (1) comprises a shell (11) and a cover (12), wherein the cover (12) is fixed at an opening of the shell (11); The shielding cavity (2) is located between the housing (11) and the cover (12), and is used to arrange a PCB board (5) to complete the conversion between the brush wire (6) and the shielding network cable (7); The wire clamping opening (3) is provided on one side of the shielding shell (1) and is used for passing the shielding network cable (7); The bottom of the housing (11) is provided with a first through hole (111); The isolation pad (4) is located in the shielding cavity (2) and is used to isolate the PCB board (5) from the shielding shell (1); An isolation convex ring (41) is provided on one side of the isolation pad (4), and the isolation convex ring (41) passes through the first through hole (111). The isolation convex ring (41) is used to isolate the brush filaments (6) from the housing (11).

2. The brush device according to claim 1, characterized in that A first wire clamping boss (112) and a second wire clamping boss (121) are respectively provided on one side of the shell (11) and the cover (12), and the wire clamping opening (3) is located between the first wire clamping boss (112) and the second wire clamping boss (121).

3. The brush device according to claim 2, characterized in that The wire clamping opening (3) is a cylindrical opening and has a diameter that is the same as the outer diameter of the shielded network cable (7).

4. The brush device according to claim 3, characterized in that The cylindrical surface where the wire clamping opening (3) is located is tangent to the surface of the PCB board (5) and the inner surface of the cover body (12).

5. The brush device according to claim 4, characterized in that The first through holes (111) include at least one column.

6. The brush device according to claim 5, characterized in that The direction of the wire clamping opening (3) is parallel to the arrangement direction of the first through holes (111).

7. The brush device according to claim 1, characterized in that Threaded holes (113) are provided on both sides of the bottom of the housing (11) for fixed connection with the PCB board (5).

8. The brush device according to claim 1, characterized in that Mounting holes are correspondingly arranged on both sides of the shell (11) and the cover (12), and the mounting holes are used for fixed connection with the rotation transmission device.

9. The brush device according to any one of claims 1 to 8, characterized in that The inner diameter of the first through hole (111) matches the outer diameter of the isolation convex ring (41).

10. The brush device according to claim 9, characterized in that The inner diameter of the isolation convex ring (41) matches the outer diameter of the brush filament (6).

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