CN217115111U - Novel point contact type ring brush matching structure for precise conductive slip ring - Google Patents
Novel point contact type ring brush matching structure for precise conductive slip ring Download PDFInfo
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- CN217115111U CN217115111U CN202220984264.5U CN202220984264U CN217115111U CN 217115111 U CN217115111 U CN 217115111U CN 202220984264 U CN202220984264 U CN 202220984264U CN 217115111 U CN217115111 U CN 217115111U
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- ring
- brush
- conducting
- electric
- contact
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 239000000956 alloy Substances 0.000 claims description 10
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 9
- 239000010931 gold Substances 0.000 claims description 9
- 229910052737 gold Inorganic materials 0.000 claims description 9
- 238000004080 punching Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- RRKGBEPNZRCDAP-UHFFFAOYSA-N [C].[Ag] Chemical compound [C].[Ag] RRKGBEPNZRCDAP-UHFFFAOYSA-N 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The novel point contact type ring brush matching structure comprises a mandrel and an electric brush assembly which are rotatably arranged in a support through a bearing, wherein a plurality of conducting rings for multiple signals to be transmitted in parallel are uniformly sleeved on the outer peripheral surface of the mandrel, and two adjacent conducting rings are separated through an insulating backing ring; the electric brush assembly comprises an electric brush which is in a U-shaped structure; two V-shaped ring guide grooves are formed in each conducting ring, two electric brushes are arranged on the two V-shaped ring guide grooves corresponding to the two conducting rings, and the two V-shaped ring guide grooves on one conducting ring are in contact with the two electric brushes correspondingly to form a double-ring double-groove double-brush parallel eight-point contact structure. This structure improves conducting ring subassembly and brush subassembly matching nature, can make contact resistance and contact resistance fluctuation stability higher, has improved the contact reliability between conductive sliding ring contact performance, the ring brush greatly, ensures that performance index such as accurate conductive sliding ring dynamic contact resistance meets the demands.
Description
Technical Field
The utility model belongs to the technical field of the sliding ring that leads electricity, concretely relates to a novel point contact formula ring brush mating structure for accurate sliding ring that leads electricity.
Background
The precise miniature conductive slip ring is a power transmission device for realizing the transmission of electric energy (signals or power) with a relative rotation displacement structure between the precise miniature conductive slip ring and the precise miniature conductive slip ring, and is a key part of electromechanical equipment such as various inertial platform systems, gyro instruments, position markers, photoelectric pods, precise rotating tables, instruments and meters and the like. The conductive slip ring determines the control accuracy, reliability and service life index requirements of control systems such as an inertia platform and the like, and due to the particularity of the application environment, the conductive slip ring is required to stably, continuously and reliably work for a long time, and once the conductive slip ring breaks down, the normal work of the whole control system is directly influenced, so that extremely high requirements are provided for the reliability and the service life of the precise conductive slip ring.
The conductive slip ring realizes signal connection between a rotating end and a fixed end through mechanical contacts, and the working principle of the prior brush 1 'and the conductive ring 2' is shown in fig. 4. The connection mode has the problem of difficult control of the pressure of the contact point, the contact point is seriously abraded due to overlarge pressure, the service life is reduced, and the rotating moment is overlarge; insufficient pressure can cause unreliable contact, excessive dynamic resistance change and reduced signal transmission quality.
The basic requirements of the conductive slip ring are the requirements of strong insulating property, low contact resistance change rate, high reliability, strong environmental adaptability, long service life and the like, the quality of the conductive ring assembly and the quality of the electric brush are closely related to the indexes, so that the performance and the reliability requirements of the conductive slip ring are directly determined by the level of the matching performance of the conductive ring brush, therefore, in order to improve the reliability of the conductive slip ring, the key is to improve the matching performance of the conductive ring assembly and the electric brush assembly, the scheme provides a novel design method for the structures of the conductive ring and the electric brush in the precise conductive slip ring, and the novel design method is provided from the aspect of improving the matching performance of the conductive ring brush so as to improve the reliability of products.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem: the utility model provides a novel point contact formula ring brush matching structure for accurate conductive sliding ring, the utility model discloses a structure of the parallelly connected eight point type contacts of dicyclo double flute double brush improves the matching nature of conducting ring and brush subassembly, can make contact resistance higher with the undulant stability of contact resistance, has improved the contact reliability between conductive sliding ring contact property, ring brush greatly, ensures performance index such as accurate conductive sliding ring dynamic contact resistance and meets the demands.
The utility model adopts the technical proposal that: the novel point contact type ring brush matching structure for the precise conductive slip ring comprises a mandrel and an electric brush assembly which are rotatably arranged in a support through a bearing, wherein a plurality of conductive rings for parallel transmission of various signals are uniformly sleeved on the outer peripheral surface of the mandrel, and two adjacent conductive rings are separated by an insulating backing ring; the electric brush assembly comprises an electric brush, and the electric brush is of a U-shaped structure; two V-shaped ring guide grooves are formed in each conducting ring, two electric brushes are arranged on the conducting rings corresponding to the two V-shaped ring guide grooves, and the two V-shaped ring guide grooves in one conducting ring are in contact with the two electric brushes correspondingly to form a double-ring double-groove double-brush parallel eight-point contact structure.
In a further limitation to the above technical solution, two ends of one of the brushes are correspondingly contacted with two sides of one of the V-shaped ring guide grooves to form a ring brush four-point contact structure.
In a further limitation of the above technical solution, the brush is a filiform elastic brush with a U-shaped structure.
The technical scheme is further limited, the electric brush is a filiform elastic electric brush made of a gold-based alloy material, and the pressure of the electric brush made of the gold-based alloy material is between 13g and 18 g.
In a further limitation of the above technical solution, the conductive ring is formed by punching a plate, and the conductive ring is made of a gold-based alloy material.
In a further limitation to the above technical solution, the insulating grommet is higher than the conductive ring by 1mm in radial dimension.
The utility model has the advantages compared with the prior art:
1. the scheme is a novel precise conductive slip ring brush matching structure, namely a double-ring double-groove double-brush parallel eight-point contact structure is adopted, a double-spring double-V-shaped groove is adopted in a slip ring groove type, four-point reliable contact of each ring brush is guaranteed, the matching performance of the conductive slip ring and the contact reliability among ring brushes are greatly improved, and performance indexes such as dynamic contact resistance of the precise conductive slip ring are ensured to meet requirements; the scheme is suitable for various electromechanical devices such as an inertial platform system, a gyro instrument, a position marker, a photoelectric pod, a precise rotary table, an instrument and the like, and can ensure that the use precision and the reliability of the precise conductive slip ring in the application fields of aerospace, aviation and navigation meet the design requirements;
2. the scheme has the advantages of unique design method, novel conception and simple structure, can effectively solve the problems of unreliable contact and jump contact resistance of the conductive slip ring brush, has low production cost and high production efficiency, is suitable for various conductive slip ring products, and has wide application range.
Drawings
FIG. 1 is a front view of the structure of the present invention;
FIG. 2 is an enlarged view of the structure of the part A in FIG. 1 according to the present invention;
fig. 3 is a side view of the present invention;
fig. 4 is a schematic diagram of the prior art structure of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements" does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.
Referring to fig. 1-4, embodiments of the present invention are detailed.
A novel point contact formula ring brush matching structure for accurate conductive slip ring includes and rotates dabber 1 and the brush subassembly of installing inside the support through the bearing, chooses the deep groove ball bearing that coefficient of friction is little for use. The outer peripheral surface of the mandrel 1 is uniformly sleeved with a plurality of conducting rings 2 used for multiple signals to be transmitted in parallel, and two adjacent conducting rings 2 are separated by an insulating backing ring 4. The insulating backing ring 4 is 1m higher than the conductive ring 2 in the radial direction.
The electric brush assembly comprises an electric brush 3, and the electric brush 3 is an electric brush with a U-shaped structure. Two V-shaped ring guide grooves 2-1 are arranged on each conducting ring 2, two electric brushes 3 are arranged corresponding to the two V-shaped ring guide grooves 2-1 on each conducting ring 2, two ends of one electric brush 3 are correspondingly contacted with two sides of one V-shaped ring guide groove 2-1, four points of each group of ring brushes are guaranteed to be reliably contacted, and the two V-shaped ring guide grooves 2-1 on one conducting ring 2 are correspondingly contacted with the two electric brushes 3 to form a double-ring double-groove double-brush parallel eight-point contact structure.
The structure can ensure that the contact pressure between the electric brush 3 and the conducting ring 2 is controlled within a certain range, so that the normal work of the electric brush 3 and the conducting ring 2 is not influenced, the contact resistance can be reduced, and a reliable ring brush contact structure is formed.
The conductive ring 2 is typically die cut from sheet material. The conducting ring 2 is made of a material which is required to have high chemical stability, electric and corrosion resistance, low friction coefficient, high conductivity, stable contact resistance and good machining performance, and is required to have good wear resistance, stable contact resistance and the like after being matched with an electric brush material, so that the conducting ring 2 is preferably made of a gold-based alloy material. According to the comprehensive consideration of the technical requirements, the service environment, the service life and the cost of the product, the conducting ring 2 can also be electroplated by copper materials.
The brush assembly comprises a brush 3, a brush holder and a conducting wire. The electric brush 3 is a filiform elastic electric brush with a U-shaped structure. The electric brush assembly and the conducting ring assembly realize signal transmission through effective contact and relative rotation, so that the contact reliability of a product is directly influenced by factors such as consistency, stability and the like of an electric brush in the electric brush assembly. The material of the brush 3 is required to have high chemical stability, resistance to electrical erosion, low friction coefficient, high electrical conductivity, good elasticity, stable contact resistance, and high structural stability, and therefore, the brush 3 is preferably a wire-shaped brush made of a gold-based alloy material. The pressure of the brush wire to the slip ring is adjusted, and the pressure to the wire-shaped brush made of the gold-based alloy is properly between 13g and 18g through test verification.
In addition, the corresponding brush material can be selected according to the transmission power requirement. The electric brush for transmitting weak current adopts a fiber alloy wire form, such as AuNi9, AuNiGd and the like; the electric brush for transmitting high power generally adopts silver graphite and silver carbon fiber block materials.
The current more common forms of brushes are piston-type brushes, leaf spring brushes and filiform elastic brushes. The filiform elastic electric brush has excellent elasticity, can keep effective contact with the conducting ring, has smaller volume resistance ratio of the metal wire, and also has obvious advantage in volume, and can meet the use requirement on current-carrying capacity by reasonably distributing the number of the electric brushes. The brush 3 of the present application thus employs a wire-like elastic brush.
In the prior art, the main contact of the brush wire and the slip ring comprises three forms of point contact, line contact and surface contact. Because the resistance generated by the point contact type is small, the point contact type is generally adopted. However, the contact surface of the point contact is very small, and the maximum current flow which can pass through the point contact cannot exceed 8 amperes. The cylindrical conductive slip ring brush and the slip ring generally adopt a sliding contact mode to realize the current transmission, and the slip ring end face structure of the cylindrical conductive slip ring brush and the slip ring generally has a plane type, a V-shaped groove type and a U-shaped groove type. The planar slip ring is easy to process and suitable for working in a continuous, stable and non-impact vibration environment; the V-shaped groove type and U-shaped groove type slip rings have clamping grooves or certain radians on the surfaces, so that the electric brush is not easy to slide off the working surface of the slip ring under the working environments of vibration impact and the like, and the reliability of the contact performance can be effectively improved. Through data analysis and multiple environmental tests, the slip ring groove of the conductive ring adopts the double-spring double-V-shaped groove, so that four-point contact of each ring brush can be ensured, the fluctuation stability of the contact resistance and the contact resistance is higher, and the service life of the conductive slip ring is longer. Moreover, this scheme can improve brush and conducting ring subassembly guide slot just positive, through guaranteeing guide slot, brush silk roughness to reduce the frictional force between the ring brush, improve brush sliding stability.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. A novel point contact formula ring brush matching structure for accurate conductive slip ring includes and rotates dabber (1) and the brush subassembly of installing inside the support through the bearing, its characterized in that: the outer peripheral surface of the mandrel (1) is uniformly sleeved with a plurality of conducting rings (2) for multiple signals to be transmitted in parallel, and two adjacent conducting rings (2) are separated by an insulating backing ring (4); the electric brush assembly comprises an electric brush (3), and the electric brush (3) is an electric brush with a U-shaped structure; two V-shaped ring guide grooves (2-1) are formed in each conducting ring (2), two electric brushes (3) are arranged corresponding to the two V-shaped ring guide grooves (2-1) in each conducting ring (2), and the two V-shaped ring guide grooves (2-1) in one conducting ring (2) are in corresponding contact with the two electric brushes (3) to form a double-ring double-groove double-brush parallel eight-point contact structure.
2. The novel point-contact type ring brush matching structure for a precision conductive slip ring according to claim 1, wherein: two ends of one electric brush (3) are correspondingly contacted with two sides of one V-shaped annular guide groove (2-1) to form an annular brush four-point contact structure.
3. The novel point-contact type ring brush matching structure for a precision conductive slip ring according to claim 1 or 2, wherein: the electric brush (3) is a filiform elastic electric brush with a U-shaped structure.
4. The novel point-contact type ring brush matching structure for a precision conductive slip ring according to claim 3, wherein: the electric brush (3) is a filiform elastic electric brush made of a gold-based alloy material, and the pressure of the electric brush (3) made of the gold-based alloy material is between 13g and 18 g.
5. The novel point-contact type ring brush matching structure for a precision conductive slip ring according to claim 1, wherein: the conducting ring (2) is formed by punching a plate, and the conducting ring (2) is made of a gold-based alloy material.
6. The novel point-contact type ring brush matching structure for a precision conductive slip ring according to claim 1, wherein: the insulating backing ring (4) is higher than the conducting ring (2) by 1mm in radial dimension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220984264.5U CN217115111U (en) | 2022-04-26 | 2022-04-26 | Novel point contact type ring brush matching structure for precise conductive slip ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220984264.5U CN217115111U (en) | 2022-04-26 | 2022-04-26 | Novel point contact type ring brush matching structure for precise conductive slip ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217115111U true CN217115111U (en) | 2022-08-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220984264.5U Expired - Fee Related CN217115111U (en) | 2022-04-26 | 2022-04-26 | Novel point contact type ring brush matching structure for precise conductive slip ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217115111U (en) |
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2022
- 2022-04-26 CN CN202220984264.5U patent/CN217115111U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220802 |