Brush wire assembly for micro conductive slip ring and conductive slip ring

Abstract

The utility model relates to a kind of brush silk assembly and conductive slip ring for miniature conductive slip ring, the brush silk assembly includes brush plate and the several brush silks fixed on brush plate, the face of brush plate lower end and brush silk contact is opened with avoiding slot, the avoiding slot can make brush silk cantilever length increase in the cantilever length of brush plate below and conductive ring contact.The utility model increases recess structure in the brush plate lower side and brush silk contact part, so that the length of brush silk cantilever increases, and the stability of brush silk and conductive ring contact is enhanced.

Description

Technical Field

[0001] This utility model belongs to the field of conductive slip ring technology, specifically relating to a brush assembly for a miniature conductive slip ring and a conductive slip ring. Background Technology

[0002] Miniature conductive slip rings, as an important branch of conductive slip rings, are characterized by their small size and high precision. In applications, they are installed at the rotation center of equipment to transmit power and signals, and are widely used in systems such as missile-borne infrared guidance, airborne optoelectronic pods, vehicle-mounted inertial navigation, and spaceborne communication platforms, showing promising market prospects.

[0003] Miniature conductive slip rings mainly consist of a rotating shaft, a bristle assembly, a support frame, a support bearing, and a housing. The manufacturing precision of the bristle assembly directly affects the performance of the miniature conductive slip ring.

[0004] Please see Figure 1 This is a schematic diagram of a conventional miniature conductive slip ring brush assembly. The basic components of this assembly include brush filaments 2 and a brush plate 1. The assembly is bonded to a support frame 3, and the brush filaments 2 elastically deform to overlap the conductive ring 4. During operation, the conductive ring rotates with the inner shaft, and the brush filaments 2 contact the conductive ring 4 to achieve stable transmission of current and signals. However, this brush assembly suffers from problems such as an excessively short lever arm for the brush filaments 2 and insufficient stability when the brush filaments 2 contact the conductive ring 4. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a novel micro-conductive slip ring brush assembly. By adding a groove structure to the underside of the brush plate, the overhang length of the brush bristles extending beyond the brush plate is increased, thereby enhancing the stability of the contact between the brush bristles and the conductive ring. This invention also provides a conductive slip ring using the aforementioned micro-conductive slip ring brush assembly, making the signal transmission of the conductive slip ring more stable and reliable.

[0006] The purpose of this utility model and the technical problem it solves are achieved by the following technical solution. According to this utility model, a miniature conductive slip ring brush assembly includes a brush plate 1 and a plurality of brush filaments 2 fixed on the brush plate 1. The characteristic feature is that a clearance groove 9 is provided at the lower end of the brush plate 1 where it contacts the brush filaments 2. This clearance groove 9 increases the length of the cantilever 24 of the brush filaments 2 extending below the brush plate and contacting the conductive ring 4, thereby enhancing the stability of the contact between the brush filaments and the conductive ring.

[0007] The purpose of this utility model and the technical problems to be solved can be further achieved by the following technical measures.

[0008] In the aforementioned micro conductive slip ring brush assembly, the clearance groove 9 is a downward-opening semi-circular arc groove, which can further enhance the cantilever's swaying ability and meet different contact requirements.

[0009] In the aforementioned micro conductive slip ring brush assembly, the brush plate 1 is provided with a through hole 12, and the fixed section 23 of the brush 2 connected above the cantilever 24 passes through the through hole 12 and is fixed in the through hole 12 by adhesive 5.

[0010] In the aforementioned micro conductive slip ring brush assembly, the center of the clearance groove 9 is on the axis of the through hole 12.

[0011] The aforementioned micro conductive slip ring brush bristle assembly further includes a connecting section 21 and a bending section 22. The two ends of the connecting section 21 are respectively connected to the fixing section 23 through a bending section 22. The bending section 22 supports the connecting section 21 above the brush plate 1. The brush plate 1 is also provided with a support protrusion 7 that can at least partially support the connecting section 22. The solder joint 11 of the connecting section 21 for welding with the wire is located on the support protrusion 7 to reduce the deformation of the brush bristles during welding.

[0012] In the aforementioned micro conductive slip ring brush bristle assembly, the supporting protrusions 7 are distributed at intervals, and each brush bristle 2 corresponds to one supporting protrusion 7.

[0013] The aforementioned micro conductive slip ring brush assembly also includes a positioning groove 8 on the support protrusion 7 for precise positioning of the brush bristles. The depth of the positioning groove 8 is less than the outer diameter of the brush bristles, which satisfies the requirements for rapid and precise positioning of the brush bristles and rapid welding of the brush bristles to the wires.

[0014] The aforementioned micro conductive slip ring brush assembly has adhesive grooves 6 on the surfaces at both ends of the brush plate 1 that are used to bond and fix it to the slip ring support frame 3, which are used to enhance the bonding strength. When the brush assembly is fixed on the support frame 3, the adhesive used to achieve bonding and fixing can enter the adhesive grooves 6, thereby enhancing the bonding strength between the brush plate 1 and the support frame 3.

[0015] The objective of this utility model and the technical problem it solves are achieved by the following technical solution. A conductive slip ring according to this utility model includes a support frame 3 and a brush assembly bonded and fixed to the support frame 3, wherein the brush assembly is a brush assembly for a miniature conductive slip ring.

[0016] The purpose of this utility model and the technical problems to be solved can be further achieved by the following technical measures.

[0017] The aforementioned conductive slip ring also has a groove on the surface where the support frame 3 is bonded and fixed to the brush bristle assembly to enhance the bonding strength. When the brush bristle assembly is bonded and fixed to the support frame 3, the grooves on both the brush plate 1 and the support frame 3 are filled with adhesive, so that a reliable bond is formed between the two.

[0018] Compared with the prior art, this utility model has significant advantages and beneficial effects. Through the above technical solution, this utility model achieves considerable technological advancement and practicality, and has broad industrial application value. It possesses at least the following advantages:

[0019] First, this invention adds a groove structure to the area where the brush bristles contact the lower side of the brush plate, which increases the length of the brush bristle cantilever and enhances the stability of the contact between the brush bristles and the conductive ring.

[0020] Secondly, a groove structure was added to the underside of the brush plate where it is bonded to the support frame, which facilitates the filling of adhesive and enhances the bonding strength between the brush plate and the support frame.

[0021] Finally, a bristle support protrusion was added to the upper part of the brush plate, and a positioning groove was set in the protrusion to increase the positioning accuracy of the bristles in the brush plate and improve product consistency; at the same time, it can reduce the deformation of the bristles when soldering wires. Attached Figure Description

[0022] Figure 1 The image shows the structure of a conventional miniature conductive slip ring brush assembly;

[0023] Figure 2 The diagram shows the contact structure between a conventional miniature conductive slip ring brush assembly and the conductive ring.

[0024] Figure 3 The diagram shows the structure of the miniature conductive slip ring brush assembly of this utility model;

[0025] Figure 4 The diagram shown is a structural diagram of the contact between the miniature conductive slip ring and the conductive ring of this utility model.

[0026] [Explanation of Key Component Symbols]

[0027] 1: Brush plate

[0028] 2: Brush bristles

[0029] 21: Connecting segment

[0030] 22: Bending section

[0031] 23: Fixed Section

[0032] 24: Cantilever

[0033] 3: Support frame

[0034] 4: Conductive ring

[0035] 5: Adhesive

[0036] 6: Adhesive Groove

[0037] 7: Support protrusion

[0038] 8: Positioning groove

[0039] 9: Avoidance groove

[0040] 10: Wire

[0041] 11: Solder joint

[0042] 12: Through hole Detailed Implementation

[0043] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended purpose of the invention, the following describes in detail the specific implementation, structure, features and effects of the micro conductive slip ring brush assembly proposed according to this utility model, in conjunction with the accompanying drawings and preferred embodiments.

[0044] Please see Figure 2-4 The diagram shows the structure of each part of the brush bristle assembly for the miniature conductive slip ring of this utility model. The brush bristle assembly includes a brush plate 1 and a plurality of brush bristles 2 fixed on the brush plate. The brush bristles 2 are distributed at intervals along the length of the brush plate 1.

[0045] The brush plate 1 has two through holes 12 at opposite positions for fixing each brush bristle 2. Each end of the brush bristle 2 passes through one of the through holes 12 and contacts the conductive ring 4 for electrical connection. To increase the length of the brush bristle 2 extending out of the brush plate 1 and enhance its contact stability with the conductive ring 4, a clearance groove 9 is provided at the lower end face of the brush plate 1 corresponding to the position of the through hole 12. This clearance groove 9 avoids restricting the movement of the brush bristle 2, allowing it to swing freely. In this embodiment, the clearance groove 9 is an arc-shaped groove, but it is not limited to this.

[0046] In this embodiment of the invention, the brush bristles 2 include a connecting section 21, a bending section 22, a fixing section 23, and a cantilever section 24. Both ends of the connecting section 21 are connected to the fixing section 23 via a bending section 22. Each fixing section has a cantilever 24 connected to its end. The fixing section 23 passes through a through hole 12 and is fixed within the through hole 12 using adhesive 5. The upper end of the cantilever 24 is connected to the fixing section 23 and can swing within the clearance groove 9. The clearance groove 9 reduces the length of the fixing section 23 and increases the length of the cantilever 24. In this embodiment, the clearance groove 9 is a downward-opening semi-circular groove, and the axis of the through hole 12 passes through the center of the semi-circular groove. Preferably, the length of the through hole 12 is the same as the radius of the clearance groove 9, thereby dividing the brush plate 1 evenly in the thickness direction by the through hole 12 and the clearance groove 9.

[0047] The bent section 21 is located above the brush plate 1, and the connecting section 21 is suspended above the brush plate 1 under the support of the two bent sections 21. To prevent the connecting section 21 from deforming when it is welded to the wire 10, the upper surface of the brush plate 1 of this invention is also provided with a support protrusion 7 at a position corresponding to the connecting section 21, which can at least support the part of the connecting section 21 where the solder joint 11 is located for welding with the wire 10. Thus, when the wire 10 is welded to the connecting section 21, the solder joint 11 is supported on the support protrusion 7, which not only facilitates the welding operation, but also effectively reduces the deformation of the brush bristles at the solder joint 11.

[0048] To enhance the positioning accuracy of the brush bristles 2, a positioning groove 8 extending along the extension direction of the connecting segment 21 is also provided on the supporting protrusion 7. This positioning groove 8 penetrates the length of the supporting protrusion 7 and has a width equivalent to the outer diameter of the brush bristles 2, and a depth smaller than the outer diameter of the brush bristles. This ensures that the lower end of the brush bristle connecting segment 21 is located within the positioning groove 8. The positioning groove 8 provides support for the connecting segment 2 and achieves horizontal radial positioning of the connecting segment 2. The connecting segment 2 partially protrudes from the positioning groove 8 so that the solder joint for welding with the wire is located outside the positioning groove 8, facilitating the welding operation. In this embodiment, the depth of the positioning groove 8 is equal to the radius of the brush bristles 2, but it is not limited to this. In this embodiment, the solder joint 11 is located in the middle of the connecting segment 21, and the supporting protrusion 7 only supports the middle part of the connecting segment 21. However, in other embodiments of this invention, the connecting segment 21 can also be supported as a whole.

[0049] In this embodiment of the invention, each bristle 2 is provided with a corresponding support protrusion 7, and multiple support protrusions 7 are spaced apart along the length of the brush plate 1, so that the upper surface of the brush plate 1 has a row of spaced support protrusions 7 in the middle. Preferably, the support protrusions 7 are integrally formed on the brush plate 1, but this is not a limitation.

[0050] In this embodiment of the invention, the bottom surfaces at both ends of the brush plate 1, where it is bonded to the slip ring support frame 3, are further provided with adhesive grooves 6 to enhance the bonding strength. When the brush plate 1 is bonded to the support frame 3, the adhesive 5 can enter the adhesive groove 6, allowing the brush plate 1 and the support frame 3 to be bonded and fixed through a flat adhesive with protrusions. In this embodiment, there is one adhesive groove 6, but in other embodiments, multiple adhesive grooves may be provided. Preferably, the adhesive groove 6 is a rectangular groove.

[0051] This utility model's brush bristle assembly adds an arc-shaped groove structure to the lower side of the brush plate 1, at the contact point with the brush bristles 2. This increases the length of the cantilever 24 of the brush bristles 2 extending below the brush plate 1, enhancing the stability of the contact between the brush bristles 2 and the conductive ring 4. Simultaneously, a groove structure is added to the lower side of the brush plate 1 at the bonding position with the support frame 3, strengthening the bond strength between the brush bristle assembly and the support frame 3. Finally, the brush bristle assembly also adds a brush bristle 2 support protrusion 7 to the upper part of the brush plate 1, with a groove in the support protrusion 7. This increases the positioning accuracy of the brush bristles 2 within the brush plate 1 and reduces deformation of the brush bristles 2 during wire soldering.

[0052] This utility model also provides a slip ring, which includes a support frame 3 and a bristle assembly bonded and fixed to the support frame 3. To further enhance the bonding stability of the bristle assembly, the support frame 3 is also provided with bonding grooves on the surface where it is bonded and fixed to the brush plate 1 of the bristle assembly, but this is not a limitation.

[0053] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A brush bristle assembly for a miniature conductive slip ring, comprising a brush plate (1) and a plurality of brush bristles (2) fixed on the brush plate (1), characterized in that: A clearance groove (9) is provided at the lower end of the brush plate (1) where it contacts the brush bristles (2). The clearance groove (9) increases the length of the cantilever (24) of the brush bristles (2) that extends below the brush plate and contacts the conductive ring (4).

2. The brush bristle assembly for a miniature conductive slip ring according to claim 1, characterized in that: The clearance groove (9) is a downward-opening semi-circular arc groove.

3. The brush bristle assembly for a miniature conductive slip ring according to claim 2, characterized in that: The brush plate (1) is provided with a through hole (12), and the fixed section (23) of the brush bristles (2) connected above the cantilever (24) passes through the through hole (12) and is fixed in the through hole (12) by adhesive (5).

4. The brush bristle assembly for a miniature conductive slip ring according to claim 3, characterized in that: The center of the clearance groove (9) is on the axis of the through hole (12).

5. The brush bristle assembly for a miniature conductive slip ring according to claim 3, characterized in that: The bristles (2) also include a connecting section (21) and a bending section (22). The two ends of the connecting section (21) are connected to the fixed section (23) through a bending section (22). The bending section (22) supports the connecting section (21) above the brush plate (1). The brush plate (1) is also provided with a support protrusion (7) that can at least partially support the connecting section (21). The solder joint (11) of the connecting section (21) for soldering with the wire is located on the support protrusion (7).

6. The brush filament assembly for a miniature conductive slip ring according to claim 5, characterized in that: The support protrusions (7) are distributed at intervals, and each brush bristle (2) corresponds to one support protrusion (7).

7. The brush filament assembly for a miniature conductive slip ring according to claim 6, characterized in that: The support protrusion (7) is also provided with a positioning groove (8) for precise positioning of the brush bristles, the depth of which is less than the outer diameter of the brush bristles.

8. The brush filament assembly for a miniature conductive slip ring according to any one of claims 1-7, characterized in that: The brush plate (1) is provided with bonding grooves (6) at both ends on the surfaces used for bonding and fixing with the slip ring support frame (3) to enhance the bonding strength.

9. A conductive slip ring, comprising a support frame (3) and a bristle assembly bonded and fixed to the support frame (3), characterized in that: The brush assembly is the brush assembly for a miniature conductive slip ring as described in any one of claims 1-8.

10. The conductive slip ring according to claim 9, characterized in that: The support frame (3) is further provided with a groove on the surface where it is bonded and fixed to the bristle assembly to enhance the bonding strength.

Images