CN104821474B - A kind of electric rotary connector - Google Patents

Abstract

The invention provides a kind of electric rotary connector, including brush carriage and stand connection, the brush carriage is provided with a left side, right brush, it is left, right brush surrounds the flaring structure that bore becomes larger in the vertical direction jointly, the stand connection include that split left and right sets for the right connector from left brush left side from left to right or from the left brush left connector that is assemblied in from the bottom to top on the brush carriage of upside and for being assemblied in from the bottom to top from right to left or from right brush upside from right brush right side on the brush carriage, it is left, the fixed installation structure for being fixedly connected with connector body is further respectively had on right connector.The left and right brush being located on brush carriage need not so be extruded, left and right brush will not be caused to deform in installation process, also would not cause in the prior art because brush deformation caused problems and defect, improve the quality and service life of electric rotary connector.

Description

An electrical rotary connector

technical field

The invention relates to basic electrical components, in particular to an electrical rotary connector.

Background technique

With the rapid development of electric power and communication equipment, the application of electrical connectors is becoming more and more extensive. The electrical rotary connector plays a very important role as a connector that can realize rotary conductive connection. The Chinese utility model patent with the authorized announcement number CN20171177U and the authorized announcement date of 2011.03.30 discloses an electric rotary connector that is convenient for maintenance. This electric rotary connector includes a connector body on which an axial interval is fixed. The supporting device is provided, and the two supporting devices are connected by an axially extending bridging beam, that is, a bracket connector. The middle position of the two bracket connectors is provided with a slip ring assembly, that is, a slip ring bushing and an electric slip ring arranged on it, to support The device is rotatably assembled on the slip ring assembly, wherein the bracket connector is a plate-shaped structure with an axially extending square hole. The bracket connector is connected with a brush bracket, and the left and right brushes are welded on the brush bracket. A flaring structure with a gradually larger diameter is formed in the up and down direction. The brush on the brush bracket passes through the square hole on the bracket connector and is tangent to the electric slip ring to achieve sliding contact with the electric slip ring. Considering the entire connection Due to the volume of the connector, the width of the square hole on the bracket connector is narrow and smaller than the maximum opening angle of the left and right brushes. When installing the brush bracket on the connector body through the bracket connector, the maximum opening angle of the two brushes needs to be adjusted. When the angular positions are squeezed toward each other and the distance between the angular positions of the two brushes is smaller than the width of the square hole, the brush can pass through the square hole on the bracket connector, so that the brush will be squeezed due to extrusion. Due to certain deformation, the contact angle between the brush and the slip ring after assembly cannot be guaranteed, the positive contact pressure cannot be guaranteed, and the friction between the brush and the slip ring cannot be accurately calculated when the slip ring rotates. The total rotational torque cannot be guaranteed, which has a great impact on the use of the electric rotary connector and reduces the service life of the electric rotary connector.

Contents of the invention

The object of the present invention is to provide an electric rotary connector which does not need to squeeze the brushes when the brush holder is installed on the connector body through the holder connector.

The brush mounting structure of the present invention adopts the following technical scheme: an electric rotary connector, including a brush mounting structure, the brush mounting structure includes a brush bracket and a bracket connector, and the brush bracket is provided with left, The right brush, the left and right brushes together form a flared structure with a diameter gradually increasing in the up and down direction. The upper side of the left brush is assembled on the brush bracket from bottom to top, and the left connecting piece is used to assemble from the right side of the right brush from right to left or from the upper side of the right brush to the brush bracket from bottom to top. The right connector on the top, the left and right connectors are respectively provided with fixed installation structures for fixed connection with the connector body.

The left and right connectors respectively include an upper and a lower connecting platform, the fixed installation structure is arranged on the lower connecting platform, and the upper and lower connecting platforms are connected by a platform connecting section.

The upper connecting platform of the left connecting part is located on the right side of the lower connecting platform, and the upper connecting platform of the right connecting part is located on the left side of the lower connecting platform.

The fixed installation structure is a screw connection hole arranged on the lower connection platform and a connection screw adapted to the screw connection hole.

The bracket connecting piece of the brush installation structure of the present invention includes a left connecting piece and a right connecting piece arranged separately on the left and right sides, and the left connecting piece is assembled from the left side of the left brush from left to right or from the upper side of the left brush from bottom to top On the brush bracket, the right connector is assembled on the brush bracket from the right side of the right brush from right to left or from the upper side of the right brush from bottom to top, so that there is no need to squeeze the left and right brushes on the brush bracket , the deformation of the left and right brushes will not be caused during the installation process, and many problems and defects caused by the deformation of the brushes in the prior art will not be caused, which improves the quality and service life of the electric rotary connector.

Description of drawings

Fig. 1 is a structural schematic diagram of Embodiment 1 of a brush installation structure of the present invention;

Fig. 2 is a schematic diagram of the connection structure between the brush installation structure and the connector body of the present invention;

Fig. 3 is a schematic cross-sectional view of the electrical rotary connector of the present invention.

detailed description

Embodiment 1 of the electric rotary connector of the present invention: as shown in Fig. 1-3, it includes a connector body 1, on which a fixing seat 10 is arranged, and the fixing seat 10 is a cylindrical structure and is sheathed in an outer casing. Inside the cylinder 8, the internal space of the fixed seat 10 is used for inserting the slip ring assembly and realizing the rotational fit between the slip ring assembly and the fixed seat, wherein the slip ring assembly includes a rotating shaft 9 and a conductive ring 6 sleeved outside the rotating shaft 9 And the insulating ring 5 arranged at the outer periphery of the guide ring 6 at axial intervals, the circumferential side wall of the fixing seat 10 has two axially extending long holes for making way, and the interval between the two long holes for making way forms a brush holder The fixing seat 2, the brush bracket fixing seat 2 is fixed with a brush installation structure, and the brush installation structure is assembled on the brush bracket fixing seat corresponding to the position of the long hole for giving way, that is, it is installed between two brush bracket fixing seats The brush installation structure includes a brush bracket 4, a brush 5 welded on the brush bracket 4, and a bracket connector 3 for fixing the brush bracket to the brush bracket fixing seat 2. The brush 5 includes a left , the right brush, and the left and right brushes together form a flaring structure that gradually increases in diameter in the up and down direction and faces the slip ring assembly during use. The bracket connector 3 includes left and right connectors that are arranged in separate parts. Among them, the left connecting piece is used to assemble on the brush bracket 4 from left to right from the left side of the left brush, and the right connecting piece is used to assemble on the brush bracket 4 from right to left from the right side of the right brush. The right connector is also provided with a fixed installation structure for fixed connection with the connector body. As shown in Figure 1-2, the left and right connectors respectively include upper and lower connection platforms located at both ends of the connector. The parts are respectively connected to the edge position of the brush bracket through the upper connecting platform, wherein, the upper connecting platform is provided with a connecting hole perpendicular to the brush bracket, and connected by connecting screws, and the left and right connecting parts are connected respectively through the lower connecting platform. The edge position of the brush bracket fixing seat, the upper and lower connecting platforms are parallel to each other and connected by the platform connecting section. The platform connecting section has a bent structure so that the upper connecting platform of the left connecting piece is located on the right side of the lower connecting platform and the connecting piece of the right connecting piece The upper connection platform is located on the left side of the lower connection platform, so that the left and right connectors can adapt to the annular space surrounded by the outer peripheral surface of the slip ring assembly and the inner peripheral surface of the outer sleeve 8, and the bending structure of the left and right connectors The inner diameter of the outer sleeve is also reduced, reducing the volume of the entire electric rotary connector. One side edge of the brush holder in the width direction is connected to the brush holder fixing seat through a plurality of connecting pieces in the axial direction, improving The connection strength between the brush bracket and the brush bracket fixing seat is improved. In this embodiment, the left and right connectors are respectively provided with screw connection holes and are connected to the brush bracket fixing seat through the screw connection holes, that is, the fixed installation structure It is a screw connection hole, which is convenient for disassembly and assembly during use, and has a simple structure and is convenient for manufacture.

The left and right brushes respectively include more than one brush unit arranged at intervals in the axial direction, and the left and right brushes rotate and slide with the conductive ring 6 of the slip ring assembly through one end close to the slip ring assembly. The monomers are respectively located between two adjacent insulating rings 5 , wherein the distance between the adjacent edges of the two brush bracket fixing seats is larger than the maximum opening angle of the left and right two sets of brushes and larger than the maximum diameter of the slip ring assembly.

When the electric rotary connector of the present invention is assembled, the brush 5 is first welded on the brush bracket 4, and then the left and right connectors are respectively connected at the edge positions of the brush bracket 4 in the width direction, wherein the left connector is connected When connecting the left connecting piece from the left side of the left brush from left to right or from the upper side of the left brush from bottom to top close to the brush bracket and connect it to the brush bracket. The parts move from the right side of the right brush from right to left or from the upper side of the right brush from bottom to top to approach the brush bracket and connect it to the brush bracket, and finally connect the left and right connecting parts to the brush bracket in turn. Just on the fixed seat, the left and right connectors have a bending structure for adapting to the annular space surrounded by the outer sleeve and the slip ring assembly, and the connectors connected on both sides of the brush bracket also form a direction toward the slip ring. The flared structure of the component, the opening angle of the flared structure is greater than the maximum opening angle of the left and right two sets of brushes, and at the same time, the distance between the adjacent edges of the two brush bracket fixing seats is greater than the maximum opening angle of the left and right sets of brushes , so that when the connector is connected to the brush bracket holder, there is enough space for the power brush to approach the slip ring assembly radially and contact the conductive ring on the slip ring assembly, without the need to approach each other Extruding the two sets of brushes on the left and right will not cause the problems caused by extrusion deformation of the electric rotary connector brushes in the prior art during installation, ensuring the quality and service life of the electric rotary connector. The connection of the brush bracket and the brush bracket fixing seat is also convenient for later disassembly and maintenance, and it is more flexible to use.

Embodiment 2 of the electric rotary connector of the present invention: the difference from Embodiment 1 is that there is no connection platform on the left and right connectors, but connection slots are respectively provided at the positions of the connection platforms, and the corresponding brush brackets Buckles that snap fit with the connecting slots are respectively provided on the fixing seat of the brush bracket and the brush bracket. At this time, the fixed installation structure is a slot that fits with the buckles.

Embodiment 3 of the electrical rotary connector of the present invention: the difference from Embodiment 1 is that the connecting section of the platform is an arc-shaped plate, and the center of the arc-shaped plate faces the direction of the slip ring assembly.

Embodiment 4 of the electrical rotary connector of the present invention: the difference from Embodiment 1 is that the platform connection section is a linear connection plate arranged obliquely parallel to the brush.

Embodiment 5 of the electrical rotary connector of the present invention: the difference from Embodiment 1 lies in that the platform connecting section is a plate-like structure extending horizontally.

Embodiment 6 of the electrical rotary connector of the present invention: the difference from Embodiment 1 is that the fixed installation structure is a welding surface on the lower connection platform that is welded to the brush bracket fixing seat.

Embodiment 7 of the electrical rotary connector of the present invention: the difference from Embodiment 1 is that the connector body is provided with an axially extending protective shoe, and the bracket connector is connected to the protective shoe of the connector body.

The electrical rotary connector of the present invention does not need to squeeze and pinch the brushes during the assembly process, and can maintain its original elasticity and shape after the installation is completed, and can perfectly cooperate with the electric slip ring, ensuring the smoothness of the electric slip ring. Rotational torque, increased service life and conductive connection.

Claims (2)

1. An electric rotary connector, comprising a brush mounting structure, the brush mounting structure comprising a brush bracket and a bracket connector, the brush bracket is provided with left and right brushes, and the left and right brushes are common It is surrounded by a flared structure with a diameter gradually increasing in the up and down direction, and is characterized in that the bracket connector includes left and right split parts for moving from left to right from the left side of the left brush or from the upper side of the left brush. The left connecting piece assembled on the brush holder from bottom to top and the right connecting piece used to assemble on the brush holder from the right side of the right brush from right to left or from the upper side of the right brush from bottom to top, The left and right connectors are respectively provided with fixed installation structures for fixed connection with the connector body. The left and right connectors respectively include upper and lower connection platforms, and the fixed installation structures are arranged on the lower connection platform. The connection platforms are connected by a platform connection section, which has a bent structure so that the upper connection platform of the left connector is located on the right side of the lower connection platform and the upper connection platform of the right connector is located on the left side of the lower connection platform. 2 . The electrical rotary connector according to claim 1 , wherein the fixed installation structure is a screw connection hole provided on the lower connection platform and a connection screw adapted to the screw connection hole. 3 .