CN215070789U - Rotary connector - Google Patents

Abstract

The utility model discloses a rotary connector, which comprises a connecting part and a slip ring component, wherein the slip ring component is coaxially arranged with the connecting part and is rotatably connected with the connecting part; the rotor assembly comprises a core shaft, a rotor pressing plate and a plurality of rotor ring sheets; a rotor sliding vane is arranged on the outer side of the rotor ring sheet; a rotor lug is arranged on the inner side of the rotor ring sheet; the stator assembly comprises a stator upper pressure plate, a stator lower pressure plate, a guide connecting rod and a plurality of stator ring sheets; the stator ring sheets are positioned between the stator upper pressing plate and the stator lower pressing plate, and the stator upper pressing plate is connected with the stator lower pressing plate through a plurality of studs; a plurality of stator brush sheets are uniformly distributed on the inner side of the stator ring sheet; a stator lug is arranged on the outer side of the stator; the rotor ring sheets and the stator ring sheets are alternately distributed along the axial direction of the mandrel; when the connecting part rotates, the mandrel and the rotor ring sheet connected with the mandrel can be driven to rotate. The utility model discloses can have higher precision and reliability through great electric current or signal to be convenient for assemble.

Description

Rotary connector

Technical Field

The utility model relates to an electromechanical control technical field, concretely relates to rotary connector.

Background

Rotary connectors are widely used in vehicle-mounted forts, stationary forts, and the like where power or data needs to be transmitted from a stationary position to a rotating position. The rotary connector is an electrical component responsible for communicating the rotating body and transmitting energy and signals, and can be used for conducting electricity, signal transmission, signal shielding and the like. The rotary connector is usually installed at the rotation center of the equipment and mainly consists of two parts, namely a rotary part and a static part. The rotating part is connected to and moves rotationally with the rotating structure of the device, called the "rotor", and the stationary part is connected to the energy source of the stationary structure of the device, called the "stator". Although the rotary connector is simple in structure, the precision is affected by large and unstable fluctuation values of the contact resistance in the using process, and the transmission failure rate of the rotary connector is high (such as non-conduction of a ring and a brush, ring jump, insulation reduction, ring breakdown, unsmooth rotation and the like), so that the reliability of a product is seriously affected.

In order to meet the requirements of a mortar of a certain type developed by one, six and seven factories in China and camp, a rotary connector which can pass large current, has high precision and high reliability needs to be designed.

SUMMERY OF THE UTILITY MODEL

The aforesaid to prior art exists not enoughly, the utility model aims to solve current slip ring subassembly and have that the contact resistance fluctuation value is big, unstable and transmission fault rate is high, the poor problem of reliability, provide a rotary connector, can pass through great electric current to higher precision and reliability have.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a rotary connector comprising a connecting portion and a slip ring assembly; the connecting part comprises a connecting outer cover and a connector, the slip ring assembly comprises a slip ring outer cover, a rotor assembly and a stator assembly, a shaft hole is formed in one side of the connecting outer cover adjacent to the slip ring outer cover, one side of the connecting outer cover close to the slip ring outer cover is connected with a shaft sleeve, and the shaft sleeve extends into the shaft hole of the slip ring outer cover and is rotatably connected with the slip ring outer cover;

the rotor assembly comprises a mandrel, a rotor pressing plate and a plurality of rotor ring sheets; the mandrel is connected with the shaft sleeve and can synchronously rotate along with the shaft sleeve; the rotor ring piece is sleeved on the mandrel, and the rotor pressing plate is positioned on one side of the rotor ring piece close to the connecting part and is connected with the mandrel through a bolt, so that the rotor ring piece can synchronously rotate along with the mandrel; a rotor sliding vane is arranged on the outer side of the rotor ring sheet around the circumference of the rotor ring sheet; rotor lugs are arranged on the inner sides of the rotor ring pieces, and an insulating piece is arranged between every two adjacent rotor ring pieces;

the stator assembly comprises a stator upper pressure plate, a stator lower pressure plate, a guide connecting rod and a plurality of stator ring sheets; the lower pressing plate is fixedly connected with the slip ring outer cover, the stator ring sheets are positioned between the stator upper pressing plate and the stator lower pressing plate and are connected through a plurality of guide connecting rods, and the stator upper pressing plate and the stator lower pressing plate are connected through a plurality of studs; a plurality of stator brush sheets are uniformly distributed around one circle of the stator ring sheet on the inner side of the stator ring sheet, and the same side of each stator brush sheet is tightly attached to the same side of the rotor sliding sheet; stator lugs are arranged on the outer side of the stator, and an insulating sheet is also arranged between every two adjacent stator ring sheets;

the rotor ring sheets and the stator ring sheets are alternately distributed along the axial direction of the mandrel; the rotor lug plate is connected with the connector through a lead, and the stator lug plate extends out of the slip ring outer cover after being connected with the lead; when the connecting part rotates, the mandrel and the rotor ring sheet connected with the mandrel can be driven to rotate.

By arranging a plurality of rotor ring sheets and a plurality of stator ring sheets, rotor sliding sheets are arranged on the outer sides of the rotor ring sheets around the rotor ring sheets; rotor lugs are arranged on the inner sides of the rotor ring pieces, and an insulating piece is arranged between every two adjacent rotor ring pieces; a plurality of stator brush sheets are uniformly distributed around one circle of the stator ring sheet on the inner side of the stator ring sheet, and the same side of each stator brush sheet is tightly attached to the same side of the rotor sliding sheet; stator lugs are arranged on the outer side of the stator, and an insulating sheet is also arranged between every two adjacent stator ring sheets; the rotor ring sheets and the stator ring sheets are alternately distributed along the axial direction of the mandrel; like this, the same one side of stator brush piece is hugged closely with the same one side of rotor gleitbretter for the angle of stator brush piece has certain redundancy, can ensure the abundant contact of rotor gleitbretter with stator brush piece, makes the friction torque who produces big, and because the existence of insulating piece, can not produce between adjacent rotor ring piece and the adjacent stator ring piece and interfere, consequently can pass through great electric current. The current maximum power ring can pass current of 200A after the combination and ring processing. Because the quantity of rotor ring piece and stator ring piece can be according to the design selection for this rotary connector can pass through the electric current of equidimension not according to the design, can satisfy different user demands.

Further, the radial length of stator brush piece is crescent or is reduced around ring piece a week, makes the inner end of stator brush piece be involute and distributes, like this, can guarantee normally through electric current or signal and do not receive the influence between stator brush piece and the rotor gleitbretter, has improved rotary connector's life and reliability.

Further, the inner end of the stator brush piece inclines towards the same direction along the axial direction of the mandrel, so that the contact area between the stator brush piece and the rotor sliding sheet is larger, and larger current can be ensured to pass.

Further, the mandrel is of a cylindrical structure, and the side wall of the mandrel protrudes outwards to form a positioning bulge; correspond on the rotor ring piece the bellied position in location is equipped with the hole of stepping down, makes rotor ring piece and dabber clearance fit, like this, fixes a position protruding can play the effect to the rotor subassembly location, the assembly of being convenient for to set up the protruding material that can practice thrift the dabber in location, thereby practice thrift manufacturing cost.

Furthermore, the positioning bulges are four and are uniformly distributed around the side wall of the mandrel for a circle, so that the positioning is convenient.

Furthermore, the rotor sliding vane is made of beryllium bronze materials and can play a role in wear resistance. The stator brush piece is made of tin bronze, so that the stator brush piece is guaranteed to have enough elasticity to be in contact with the rotor sliding piece, friction torque between the stator brush piece and the rotor sliding piece is guaranteed to be large, and large current can be passed.

Furthermore, a lead connected with the rotor lug extends out of the inner side of the rotor and is connected with the connector after passing through a gap between the lead and the mandrel; and the lead connected with the stator lug plate extends out of the outer side of the stator and extends out of the slip ring outer cover, so that the rotary connector is more compact in structure and more reasonable in wiring.

Compared with the prior art, the utility model has the advantages of as follows:

1. by arranging a plurality of rotor ring sheets and a plurality of stator ring sheets, rotor sliding sheets are arranged on the outer sides of the rotor ring sheets around the rotor ring sheets; rotor lugs are arranged on the inner sides of the rotor ring pieces, and an insulating piece is arranged between every two adjacent rotor ring pieces; a plurality of stator brush sheets are uniformly distributed around one circle of the stator ring sheet on the inner side of the stator ring sheet, and the same side of each stator brush sheet is tightly attached to the same side of the rotor sliding sheet; stator lugs are arranged on the outer side of the stator, and an insulating sheet is also arranged between every two adjacent stator ring sheets; the rotor ring sheets and the stator ring sheets are alternately distributed along the axial direction of the mandrel; like this, the same one side of stator brush piece is hugged closely with the same one side of rotor gleitbretter for the angle of stator brush piece has certain redundancy, can ensure the abundant contact of rotor gleitbretter with stator brush piece, makes the friction torque who produces big, and because the existence of insulating piece, can not produce between adjacent rotor ring piece and the adjacent stator ring piece and interfere, consequently can pass through great electric current.

2. The current maximum power ring can pass current of 200A after the combination and ring processing. Because the quantity of rotor ring piece and stator ring piece can be according to the design selection for this rotary connector can pass through the electric current of equidimension not according to the design, can satisfy different user demands.

Drawings

Fig. 1 is a cross-sectional view of a rotary connector according to the present invention.

Fig. 2 is a top view of the rotor ring segment of fig. 1.

Fig. 3 is a top view of the stationary ring plate of fig. 1.

In the figure: the connecting device comprises a connecting housing 11, a connector 12, a shaft sleeve 13, a slip ring housing 21, a rotor assembly 22, a mandrel 221, a rotor pressing plate 222, a rotor ring plate 223, a rotor wire connecting plate 2231, a sliding bearing 224, a deep groove ball bearing 225, a stator assembly 23, a stator upper pressing plate 231, a stator lower pressing plate 232, a guide connecting rod 233, a stator ring plate 234, a stator brush piece 2341, a stator wire connecting plate 2342 and a stud 235.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

Example (b):

referring to fig. 1, a rotary connector includes a connecting portion and a slip ring assembly. The connecting portion is including connecting dustcoat 11 and connector 12, the slip ring subassembly includes slip ring dustcoat 21, rotor subassembly 22 and stator module 23, has seted up the shaft hole connecting dustcoat 11 and the adjacent one side of slip ring dustcoat 21, connects dustcoat 11 and is close to one side of slip ring dustcoat 21 and links to each other with a sleeve 13, and this sleeve 13 stretches into in the shaft hole of slip ring dustcoat 21 and is connected with slip ring dustcoat 21 rotation. During specific implementation, the slip ring outer cover 21 is connected with the shaft sleeve 13 through the deep groove ball bearing 225, the shaft sleeve 13 can rotate freely relative to the slip ring outer cover 21, friction force is reduced, and the geometric shape, the size precision and the fit clearance of the fit part of the bearing can be strictly controlled, so that the assembly deformation of the bearing is reduced, the position precision of the bearing is ensured, the rotor mechanism has high precision, and therefore the whole rotary connector has high precision.

Referring to fig. 1 and 2, the rotor assembly 22 includes a mandrel 221, a rotor platen 222, and a plurality of rotor ring segments 223. The mandrel 221 is connected with the shaft sleeve 13 and can synchronously rotate along with the shaft sleeve 13. The rotor ring 223 is sleeved on the mandrel 221, and the rotor pressing plate 222 is located on one side of the rotor ring 223 close to the connecting portion and connected with the mandrel 221 through a bolt, so that the rotor ring 223 can synchronously rotate along with the mandrel 221. In a specific implementation, the mandrel 221 has a cylindrical structure, and a sidewall of the mandrel 221 protrudes outward to form a positioning protrusion. The rotor ring piece 223 is provided with a yielding hole corresponding to the position of the positioning protrusion, so that the rotor ring piece 223 is in clearance fit with the mandrel 221, preferably, the positioning protrusions are four and are uniformly distributed around the side wall of the mandrel 221 in a circle. In this way, the locating projection can serve to locate the rotor assembly 22 for ease of assembly, and the provision of the projection can save material on the mandrel 221, thereby saving manufacturing costs. Rotor vanes are provided around the outer side of the rotor ring segment 223. When the rotor sliding vane is implemented, the rotor sliding vane is made of beryllium bronze materials and can play a role in wear resistance. A rotor tab 2231 is provided on the inner side of the rotor ring segments 223, and an insulating sheet is provided between two adjacent rotor ring segments 223. During specific implementation, one end of the mandrel 221, which is far away from the connecting portion, extends outwards around the circumference of the mandrel 221 to form a rotor support plate, and the rotor ring piece 223 is sleeved on the mandrel 221 and then can be located on the rotor support plate, so that the rotor ring piece 223 is convenient to install and compress.

Referring to fig. 1 and 3, the stator assembly 23 includes a stator upper pressure plate 231, a stator lower pressure plate 232, a guide connection bar 233, and a plurality of stator ring pieces 234. The lower pressure plate is fixedly connected with the slip ring housing 21. In specific implementation, the lower pressure plate is fixedly connected with the slip ring housing 21 through bolts and is located on one side of the slip ring housing 21 away from the connection housing 11. The stator ring sheets 234 are located between the stator upper pressing plate 231 and the stator lower pressing plate 232 and connected through a plurality of guide connecting rods 233, and the stator upper pressing plate 231 and the stator lower pressing plate 232 are connected through a plurality of studs 235. In practice, the guide connecting rods 233 are fixed to the stator lower pressure plate 232, and four or six guide connecting rods 233 are preferred. The stator ring piece 234 is provided with a positioning hole at a position corresponding to the guide connecting rod 233, so that when the stator ring piece 234 is installed, the stator ring piece 234 can be sleeved on the guide connecting rod 233 by only corresponding the positioning hole to the guide connecting rod 233 to realize the installation of the stator ring piece 234, and the installation is convenient and reliable. A plurality of stator brush sheets 2341 are uniformly distributed around one circle of the stator ring sheet 234 on the inner side, and the same side of each stator brush sheet 2341 is tightly attached to the same side of the rotor sliding sheet. In specific implementation, the inner ends of the stator brush sheets 2341 are inclined towards the same direction along the axial direction of the mandrel 221, so that the contact area between the stator brush sheets 2341 and the rotor sliding vanes is larger, and larger current can be ensured to pass through. Stator brush piece 2341's radial length is around ring piece a week crescent or reduce, makes stator brush piece 2341's the inner end (stator brush piece 2341 is close to the one end of rotor gleitbretter for the inner end) be the distribution of gradually bursting at the seams, like this, can guarantee normally through electric current or signal and do not receive the influence between stator brush piece 2341 and the rotor gleitbretter, has improved rotary connector's life and reliability. The stator tab 2342 is disposed on the outer side of the stator, and an insulating sheet is disposed between two adjacent stator ring pieces 234. Preferably, stator brush piece 2341 adopts tin bronze to make, guarantees that stator brush piece 2341 has sufficient elasticity like this and realizes making contact with the rotor gleitbretter to it is big to ensure to produce the friction torque between stator brush piece 2341 and the rotor gleitbretter, can pass through great electric current.

The rotor ring segments 223 and the stator ring segments 234 are alternately distributed along the axial direction of the mandrel 221. The rotor tabs 2231 are connected to the connector 12 by wires, and the stator tabs 2342 extend out of the slip ring housing 21 after being connected to the wires. When the connecting part rotates, the spindle 221 and the rotor ring piece 223 connected with the spindle 221 can be driven to rotate. In practice, the wires connected to the rotor tabs 2231 extend from the inside of the rotor and are connected to the connector 12 through the gap between the core 221; the wires connected to the stator tabs 2342 extend from the outside of the stator and out of the slip ring housing 21, thus making the rotary connector more compact and more reasonable to route.

When the device is installed, the lower end of the mandrel 221 penetrates through the lower pressing plate and is rotatably connected with the lower pressing plate through the sliding bearing 224, and the upper end of the mandrel is fixedly connected with the shaft sleeve 13. During specific implementation, a connecting groove is formed in one side, close to the core shaft 221, of the shaft sleeve 13, a connecting protrusion is arranged on the core shaft 221 corresponding to the connecting groove, the connecting protrusion extends into the connecting groove and is fixedly connected with the connecting groove through a bolt, and the core shaft 221 can rotate along with the shaft sleeve 13. Therefore, the geometric shape, the dimensional accuracy and the fit clearance of the fit part of the bearing can be strictly controlled, so that the assembly deformation of the bearing is reduced, the position accuracy of the bearing is ensured, the rotor mechanism has high accuracy, and the whole rotary connector has high accuracy.

By arranging a plurality of rotor ring sheets and a plurality of stator ring sheets, rotor sliding sheets are arranged on the outer sides of the rotor ring sheets around the rotor ring sheets; rotor lugs are arranged on the inner sides of the rotor ring pieces, and an insulating piece is arranged between every two adjacent rotor ring pieces; a plurality of stator brush sheets are uniformly distributed around one circle of the stator ring sheet on the inner side of the stator ring sheet, and the same side of each stator brush sheet is tightly attached to the same side of the rotor sliding sheet; stator lugs are arranged on the outer side of the stator, and an insulating sheet is also arranged between every two adjacent stator ring sheets; the rotor ring sheets and the stator ring sheets are alternately distributed along the axial direction of the mandrel; like this, the same one side of stator brush piece is hugged closely with the same one side of rotor gleitbretter for the angle of stator brush piece has certain redundancy, can ensure the abundant contact of rotor gleitbretter with stator brush piece, makes the friction torque who produces big, and because the existence of insulating piece, can not produce between adjacent rotor ring piece and the adjacent stator ring piece and interfere, consequently can pass through great electric current. The current maximum power ring can pass current of 200A after the combination and ring processing. Because the quantity of rotor ring piece and stator ring piece can be according to the design selection for this rotary connector can pass through the electric current of equidimension not according to the design, can satisfy different user demands.

The assembly of the rotary connector is carried out by the following steps:

s1, fixing the stator lower pressing plate 232 on the slip ring housing 21, and mounting one end of the mandrel 221 on the middle portion of the stator lower pressing plate 232, so that the mandrel 221 can rotate relative to the stator lower pressing plate 232. Specifically, the lower end of the mandrel 221 is rotatably connected to the lower pressing plate through a sliding bearing 224.

S2, mounting a stator ring 234 on the stator lower pressing plate 232, and sleeving the rotor ring 223 on the mandrel 221 to make the rotor sliding piece contact with the stator brush piece 2341. The above steps are repeated until the stator ring segments 234 and the rotor ring segments 223 are completely installed.

S3, placing the rotor pressing plate 222 on the rotor ring piece 223 and fixing the rotor pressing plate 222 to the mandrel 221 through bolts, so that the rotor pressing plate 222 presses the rotor ring piece 223. The stator upper pressing plate 231 is mounted on the stator ring piece 234, and the stator upper pressing plate 231, the stator ring piece 234 and the stator lower pressing plate 232 are pressed tightly through the studs 235.

And S4, connecting the other end of the mandrel 221 with the connecting part, and connecting the rotor lug 2231 and the stator lug 2342 with leads respectively, wherein the leads connected with the rotor lug 2231 extend from the inner side of the rotor ring 223 and are connected with the connector 12 after passing through the gap between the mandrel 221, and the leads connected with the stator lug 2342 extend from the outer side of the stator ring 234 and extend out of the slip ring housing 21, so that the assembly is completed.

The assembling mode is adopted for assembling, due to the adoption of the combined design, the assembling mode is characterized in that the assembling mode is adopted, the assembling is carried out from bottom to top, the bearing connection and the pressing plate, the bolt and the stud are tightened, the assembling can be completed without a die, and the assembling is convenient and fast. And the insulating condition and the conduction condition of each ring can be checked in the assembling process, and the slip ring is reassembled if unqualified conditions exist, so that the slip ring is guaranteed not to be scrapped.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and those skilled in the art should understand that those modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all should be covered in the scope of the claims of the present invention.

Claims (7)

1. A rotary connector comprising a connecting portion and a slip ring assembly; the connecting part comprises a connecting outer cover and a connector, the slip ring assembly comprises a slip ring outer cover, a rotor assembly and a stator assembly, a shaft hole is formed in one side of the connecting outer cover adjacent to the slip ring outer cover, one side of the connecting outer cover close to the slip ring outer cover is connected with a shaft sleeve, and the shaft sleeve extends into the shaft hole of the slip ring outer cover and is rotatably connected with the slip ring outer cover; it is characterized in that the preparation method is characterized in that,

the rotor assembly comprises a mandrel, a rotor pressing plate and a plurality of rotor ring sheets; the mandrel is connected with the shaft sleeve and can synchronously rotate along with the shaft sleeve; the rotor ring piece is sleeved on the mandrel, and the rotor pressing plate is positioned on one side of the rotor ring piece close to the connecting part and is connected with the mandrel through a bolt, so that the rotor ring piece can synchronously rotate along with the mandrel; a rotor sliding vane is arranged on the outer side of the rotor ring sheet around the circumference of the rotor ring sheet; rotor lugs are arranged on the inner sides of the rotor ring pieces, and an insulating piece is arranged between every two adjacent rotor ring pieces;

the stator assembly comprises a stator upper pressure plate, a stator lower pressure plate, a guide connecting rod and a plurality of stator ring sheets; the lower pressing plate is fixedly connected with the slip ring outer cover, the stator ring sheets are positioned between the stator upper pressing plate and the stator lower pressing plate and are connected through a plurality of guide connecting rods, and the stator upper pressing plate and the stator lower pressing plate are connected through a plurality of studs; a plurality of stator brush sheets are uniformly distributed around one circle of the stator ring sheet on the inner side of the stator ring sheet, and the same side of each stator brush sheet is tightly attached to the same side of the rotor sliding sheet; stator lugs are arranged on the outer side of the stator, and an insulating sheet is also arranged between every two adjacent stator ring sheets;

the rotor ring sheets and the stator ring sheets are alternately distributed along the axial direction of the mandrel; the rotor lug plate is connected with the connector through a lead, and the stator lug plate extends out of the slip ring outer cover after being connected with the lead; when the connecting part rotates, the mandrel and the rotor ring sheet connected with the mandrel can be driven to rotate.

2. The rotary connector of claim 1, wherein the radial length of the stator brush segments is gradually increased or decreased around the circumference of the ring segment, so that the inner ends of the stator brush segments are distributed in an involute shape.

3. The rotary connector according to claim 1, wherein inner ends of the stator brush pieces are inclined in the same direction in an axial direction of the mandrel.

4. The rotary connector of claim 1, wherein the mandrel is cylindrical in shape, and a sidewall of the mandrel protrudes outward to form a positioning protrusion; and a yielding hole is formed in the position, corresponding to the positioning bulge, of the rotor ring piece, so that the rotor ring piece is in clearance fit with the mandrel.

5. The rotary connector of claim 4, wherein the positioning projections are four and are evenly distributed around the side wall of the mandrel.

6. The rotary connector of claim 1, wherein the rotor slide is made of beryllium bronze material; the stator brush piece is made of tin bronze.

7. The rotary connector of claim 1, wherein the lead wires connected to the rotor lugs extend from the inside of the rotor and are connected to the connector after passing through a gap with the mandrel; wires connected with the stator lugs extend out of the outer side of the stator and extend out of the slip ring housing.

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