CN211182759U

CN211182759U - Rotary joint of conductive slip ring

Info

Publication number: CN211182759U
Application number: CN201922252041.0U
Authority: CN
Inventors: 蔡益军
Original assignee: SHENZHEN JINPAT ELECTRONICS CO Ltd
Current assignee: SHENZHEN JINPAT ELECTRONICS CO Ltd
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2020-08-04
Anticipated expiration: 2029-12-16

Abstract

The utility model discloses a rotary joint of conductive slip ring, locate the rotor on the stator support including stator support and rotation, be equipped with a plurality of circular arc recess along circumference on the lateral wall of stator support, be equipped with on the circular arc recess with circular arc recess matched with, upper portion be the brush line of circular arc, be connected with the stator wire on the brush line, the lateral wall of stator support is equipped with the wire groove along the axial at the lateral part of circular arc recess, the stator wire is drawn forth from the wire groove. The upper part of the brush wire is changed into an arc design from the traditional straight line design, and the position on the stator support for installing the brush wire is changed into an arc surface design from the traditional plane design, so that the inner space of the conductive slip ring is more compact, and the overall dimension of the conductive slip ring can be effectively reduced. And the stator wire is led out from the wire outlet groove arranged on the side part of the arc groove, and compared with the mode that the wire is directly arranged on the outer wall of the stator bracket to be led out in the prior art, the problem of short circuit caused by wire pressing can be avoided, and the internal structure of the product is more compact.

Description

Rotary joint of conductive slip ring

Technical Field

The utility model relates to a lead electrical slip ring technical field, more specifically say, relate to a rotary joint of leading electrical slip ring.

Background

The conducting ring rotating structure is a precise device for realizing image and data signal transmission between two relative rotating mechanisms. Along with the more and more extensive application environment of sliding ring in recent years, the overall dimension requirement to leading electric sliding ring is more and more littleer, especially on precision instruments, unmanned aerial vehicle, miniature supervisory equipment, aerospace and medical equipment, connects the electrical signal in narrow space, needs to guarantee stability, can satisfy functional requirement again. Based on the background, the requirement on the external dimension of the conductive slip ring is higher in the original performance requirement of the conductive slip ring.

At present, the diameter of the ultra-micro conductive slip ring on the market is usually more than 7.9mm, and the requirement of a micro precise instrument is difficult to meet due to the large size.

Therefore, how to solve the problem of the oversize size of the conventional ultra-small conductive slip ring is a problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a rotary joint of conductive sliding ring for the inner space is compacter through optimizing the structure of stator support and the brush line on it, can effectively reduce conductive sliding ring's overall dimension, in order to satisfy miniature precision instruments's demand.

In order to achieve the above object, the present invention provides the following technical solutions:

the utility model provides a rotary joint of conductive slip ring, includes stator support and rotates and locates rotor on the stator support, be equipped with a plurality of circular arc recess along circumference on the lateral wall of stator support, be equipped with on the circular arc recess with circular arc recess matched with, upper portion are the brush line of circular arc, be connected with the stator wire on the brush line, the lateral wall of stator support is in the lateral part of circular arc recess is equipped with the wire outgoing groove along the axial, the stator wire is followed the wire outgoing groove is drawn forth.

Preferably, the axis of the arc groove coincides with the axis of the rotor.

Preferably, an annular groove corresponding to the brush lines on the arc groove one to one is formed in the side wall of the rotor along the circumferential direction, a brush ring matched with the brush lines is arranged on the annular groove, and a rotor lead is connected to the brush ring.

Preferably, the brush ring is a copper ring.

Preferably, the front end and the rear end of the rotor are rotatably connected to the stator bracket through bearings.

Preferably, the stator support comprises a first support and a second support which can be opened and closed to disassemble and assemble the rotor, and the first support and the second support are buckled with each other to install the rotor in the first support and the second support.

Preferably, the first support and the second support are fixed together through a cap in a buckling mode.

The utility model provides a rotary joint of conductive sliding ring changes the circular arc design into by traditional sharp design through brushing line upper portion, and the position that is used for installing the brush line on the stator support changes the arc surface design into by traditional planar design, sets up the circular arc recess promptly on the stator support for conductive sliding ring's inner space is compacter, can effectively reduce conductive sliding ring's overall dimension. And the stator wire is qualified for next round of competitions from the wire outlet groove of locating the lateral part of circular arc recess, and the stator wire is qualified for the next round of competitions from the lateral part of circular arc recess promptly, and the stator wire draws forth from the wire outlet groove of stator support side with the brush-wire welding back, compares in prior art with the direct mode of drawing forth from the stator support outer wall of stator wire, can avoid the shell line ball and lead to the problem of short circuit, can make the inner structure of product compacter moreover, the product appearance is more tiny, and the performance is more stable.

Therefore, the utility model provides a rotary joint of conducting slip ring can effectively reduce the radial dimension of sliding ring under the condition that does not change product property and passageway number, satisfies the needs of the facility equipment that the inner space is compact, light in weight. The slip ring has stable performance and high consistency, can be produced in batches, greatly improves the production qualification rate of the slip ring, simplifies the working procedures and reduces the production cost.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic view of a rotary joint of a conductive slip ring according to an embodiment of the present invention;

fig. 2 is a schematic perspective view of a rotary joint of a conductive slip ring according to an embodiment of the present invention;

fig. 3 is a schematic perspective view of another angle of a rotary joint of the conductive slip ring according to the present invention;

fig. 4 is a schematic structural view of a brush wire.

The motor comprises a rotor wire 1, a rotor 2, a housing 3, a brush wire 4, a stator support 5, a first support 51, a second support 52, a stator wire 6, a bearing 7, a copper ring 8, an arc-shaped groove 9 and an outlet groove 10.

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.

The core of the utility model is to provide a rotary joint of conductive slip ring, through optimizing the stator support and the structure of the brush line on it for inner space is compacter, can effectively reduce conductive slip ring's overall dimension, in order to satisfy miniature precision instruments's demand.

Referring to fig. 1 to 4, fig. 1 is a schematic view of a rotary joint of a conductive slip ring according to an embodiment of the present invention; fig. 2 is a schematic perspective view of a rotary joint of a conductive slip ring according to an embodiment of the present invention; fig. 3 is a schematic perspective view of another angle of a rotary joint of the conductive slip ring according to the present invention; fig. 4 is a schematic structural view of a brush wire.

The utility model provides a rotary joint of conductive slip ring, locate rotor 2 on stator support 5 including stator support 5 and rotation, be equipped with a plurality of circular arc recess 9 along circumference on stator support 5's the lateral wall, be equipped with on circular arc recess 9 with circular arc recess 9 matched with, upper portion be the brush line 4 of circular arc, be connected with stator wire 6 on the brush line 4, stator support 5's lateral wall is equipped with wire groove 10 at the lateral part of recess along the axial, stator wire 6 is drawn forth from wire groove 10.

Wherein, the rotary joint of the conductive slip ring is a precision device for realizing image and data signal transmission between two relative rotating mechanisms, and comprises a stator support 5 and a rotor 2 which is rotatably arranged on the stator support 5, an arc groove 9 is arranged on the side wall of the stator support 5 along the circumferential direction of the stator support 5, a plurality of arc grooves 9 are arranged on the stator support 5, the plurality of arc grooves 9 are distributed on the stator support 5 along the axial direction of the stator support 5, a brush wire 4 is arranged on the arc groove 9, the upper part of the brush wire 4 is in an arc shape matched with the arc groove 9, namely the brush wire is bent into an inverted U-shaped structure, two ends of the brush wire 4 penetrate through the stator support 5 to be contacted with the rotor 2 so as to realize the conduction of the stator lead 6 and the rotor lead 1, in addition, the stator support 5 is provided with a lead-out groove 10 at the side part of the arc groove 9, the lead-, so that the stator wire 6 connected to the brush wire 4 is led out of the outlet slot 10.

Particularly, the brush wire 4 can be made of noble metal brush wires, has good conductive performance and extremely high wear resistance, ensures the service life of the product, has higher insulation voltage resistance coefficient, can achieve the current load of 1A, is reduced by about 40 percent compared with the outer diameter of a slip ring with the same channel number in the domestic market, has the diameter of 4.5mm, can ensure that the dynamic resistance fluctuation value of each loop of the slip ring is not more than 2m omega, and can meet the requirements of facility equipment such as aerospace, military equipment, precise medical equipment, robots and the like

All kinds of weakness in spaceStable and high-quality transmission of signals and current.

The utility model provides a rotary joint of conductive slip ring changes the circular arc design into by traditional sharp design through 4 upper portions of brush line, and the position that is used for installing brush line 4 on the stator support 5 changes the circular arc surface design into by traditional planar design, sets up circular arc recess 9 on stator support 5 promptly for conductive slip ring's inner space is compacter, can effectively reduce conductive slip ring's overall dimension. And stator wire 6 goes out the line from the wire outgoing groove 10 of locating the lateral part of circular arc recess 9, stator wire 6 is qualified for the next round of competitions from the lateral part of circular arc recess 9 promptly, stator wire 6 with brush line 4 welding back, draw from stator support 5 side wire outgoing groove 10, compare in the mode of drawing stator wire 6 directly from stator support 5 outer wall among the prior art, can avoid

stator support

5 and 3 extrusion stator wire 6 of shell and lead to the problem of short circuit, and can make the inner structure of product compacter, the product appearance is more tiny, the performance is more stable.

In addition to the above embodiments, it is preferable that the axial center of the arc groove 9 coincides with the axial center of the rotor 2. Namely, in the embodiment, the center of the arc groove 9 is coincident with the axis of the rotor 2, and the structure can reduce the radial dimension of the slip ring to the maximum extent.

On the basis of the above embodiment, considering the specific arrangement manner of the rotor 2, as a preferable option, the side wall of the rotor 2 is provided with an annular groove corresponding to the brush wires 4 on the arc groove 9 in a one-to-one manner along the circumferential direction, the annular groove is provided with a brush ring matched with the brush wires 4, and the brush ring is connected with the rotor lead 1. Specifically, the brush ring is a copper ring 8.

In addition to the above embodiments, it is preferable that both the front end and the rear end of the rotor 2 are rotatably connected to the stator frame 5 through bearings 7. That is, in this embodiment, the front end and the rear end of the rotor 2 are rotatably mounted on the stator bracket 5 through the bearing 7, so as to ensure the reliability of the rotation fit between the two.

On the basis of the above embodiment, in order to facilitate the fitting of the rotor 2 and the stator holder 5, it is preferable that the stator holder 5 includes a first holder 21 and a second holder 52 that can be opened and closed to attach and detach the rotor 2, and the first holder 21 and the second holder 52 are engaged with each other to mount the rotor 2 therebetween. Specifically, the first bracket 21 and the second bracket 52 are provided with inner cavities for mounting the rotor 2, so that after the first bracket 21 and the second bracket 52 are opened, the rotor 2 is mounted in the inner cavities, and the bearing 7 is mounted in the inner cavities, so that the rotor 2 is mounted between the first bracket 21 and the second bracket 52 through the bearing 7.

In addition to the above-described embodiments, in consideration of the fixing manner of the first bracket 21 and the second bracket 52, it is preferable that the first bracket 21 and the second bracket 52 are fastened and fixed together by a cap. During assembly, the rotor 2 is placed between the first support 21 and the second support 52, the first support and the second support are combined together, and the rotor is sleeved in a cap sleeve to complete assembly of a finished product, so that various transmitted signals are not interfered with each other, and the fluctuation value of the dynamic resistance of each loop of the slip ring can not exceed 2m omega.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The above is to the rotary joint of the conductive slip ring provided by the present invention, which is described in detail. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. The utility model provides a rotary joint of conductive slip ring, includes stator support (5) and rotates and locates rotor (2) on stator support (5), its characterized in that, be equipped with a plurality of circular arc recess (9) along circumference on the lateral wall of stator support (5), be equipped with on circular arc recess (9) with circular arc recess (9) matched with, upper portion are brush line (4) of circular arc, be connected with stator wire (6) on brush line (4), the lateral wall of stator support (5) is in the lateral part of circular arc recess (9) is equipped with wire outgoing slot (10) along the axial, stator wire (6) are followed wire outgoing slot (10) are drawn forth.

2. Swivel joint of an electrically conductive slip ring according to claim 1, characterized in that the axis of the circular arc groove (9) coincides with the axis of the rotor (2).

3. The rotary joint of the conductive slip ring according to claim 1, wherein the side wall of the rotor (2) is circumferentially provided with an annular groove corresponding to the brush wire (4) on the arc groove (9) in a one-to-one manner, the annular groove is provided with a brush ring matched with the brush wire (4), and the brush ring is connected with the rotor lead (1).

4. Rotary joint for electrical slip rings according to claim 3, characterized in that the brush ring is a copper ring (8).

5. Rotary joint for electrical slip rings according to claim 4, characterized in that the rotor (2) is rotationally connected to the stator frame (5) at both its front and rear ends by means of bearings (7).

6. Rotating joint of electrical slip ring according to any of claims 1 to 5, characterized in that the stator frame (5) comprises a first frame (21) and a second frame (52) that can be opened and closed for dismounting the rotor (2), the first frame (21) and the second frame (52) being mutually snap-fitted for mounting the rotor (2) therebetween.

7. Rotating joint of an electrically conductive slip ring according to claim 6, characterized in that the first bracket (21) and the second bracket (52) are snap-fastened together by means of a cap.