CN218677841U

CN218677841U - Split type motor shaft earthing device

Info

Publication number: CN218677841U
Application number: CN202223343704.8U
Authority: CN
Inventors: 叶玉燕
Original assignee: Taizhou Kafeile Technology Co ltd
Current assignee: Taizhou Kafeile Technology Co ltd
Priority date: 2022-12-13
Filing date: 2022-12-13
Publication date: 2023-03-21
Anticipated expiration: 2032-12-13

Abstract

The utility model discloses a split type motor shaft grounding device, which comprises a fixing ring, conductive fibers and a pressure-resisting pin; one side of the fixing ring, facing the annular center of the fixing ring, is provided with at least one conductive fiber jack, and the fixing ring is also provided with a pressing pin jack intersected and communicated with the conductive fiber jack; one conductive fiber is arranged corresponding to each conductive fiber jack, and one conductive fiber is correspondingly inserted into one conductive fiber jack; and each abutting pin is arranged corresponding to each abutting pin jack and is used for being inserted into the corresponding abutting pin jack and further penetrating into the conductive fiber jack intersected with the abutting pin jack so as to tightly press the conductive fibers in the conductive fiber jack on the hole wall. The utility model provides a structure is succinct, and production is simple and convenient, and the stronger motor shaft earthing device of commonality.

Description

Split type motor shaft earthing device

Technical Field

The utility model relates to the technical field of motors, in particular to split type motor shaft earthing device.

Background

The working environment of the electric automobile motor has the characteristics of high frequency, high speed, high voltage, high power and the like, and along with the development of electric automobiles, the market has higher and higher requirements on the reliability of the electric automobile motor.

The motor generally includes a stator, a rotor, a motor shaft, a housing, and a bearing, the bearing is installed in the housing, the motor shaft is installed on the bearing to realize the rotation relative to the housing, the rotor is installed on the motor shaft, the stator is installed on the housing, and the motor shaft is driven to rotate relative to the housing by the magnetic force between the stator and the rotor. However, in the process of the motor working, due to the magnetic force, induced voltage and induced current are generated on the motor shaft, and the induced current is conducted to the bearing to cause the bearing to generate an electric corrosion phenomenon, so that the melting loss of the bearing is caused, the bearing locking phenomenon is generated by serious people, and the driving safety of the electric vehicle is seriously influenced.

The existing device for grounding the motor shaft is provided to prevent induced current on the motor shaft from being conducted to the bearing, but the existing device is complex in structure, complex in manufacturing process, high in manufacturing precision requirement and poor in universality; therefore, a grounding device for a motor shaft, which has a simple structure, a simple and convenient production process and strong universality, is urgently needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a split type motor shaft earthing device overcomes above-mentioned defect, utilizes succinct structure, and simple and convenient production technology makes a stronger motor shaft earthing device of commonality.

To achieve the above object, the solution of the present invention is: a split type motor shaft grounding device comprises a fixing ring, conductive fibers and a pressing pin;

one side of the fixing ring, facing the annular center of the fixing ring, is provided with at least one conductive fiber jack, and the fixing ring is also provided with a pressing pin jack intersected and communicated with the conductive fiber jack;

one conductive fiber is arranged corresponding to each conductive fiber jack, and one conductive fiber is correspondingly inserted into one conductive fiber jack;

and a pressing pin is arranged corresponding to each pressing pin jack and is used for being inserted into the corresponding pressing pin jack and further penetrating into the conductive fiber jack intersected with the pressing pin jack so as to tightly press the conductive fibers in the conductive fiber jack on the hole wall.

Further, the pressing pin can be axially locked in the pressing pin insertion hole.

Further, the pressing pin is inserted into the pressing pin insertion hole in an interference mode.

Further, the conductive fiber insertion holes extend radially on the fixing ring.

Furthermore, the conductive fiber jack penetrates through the fixing ring.

Furthermore, the conductive fiber jack has been seted up a plurality ofly, and is a plurality of the conductive fiber jack is arranged around solid fixed ring center circumference array.

Furthermore, one abutting pin jack is arranged corresponding to each conductive fiber jack, and one abutting pin jack is correspondingly communicated with one conductive fiber jack in an intersecting manner.

Further, each of the pressing pin insertion holes is perpendicular to the conductive fiber insertion holes communicated with the pressing pin insertion holes.

Furthermore, the inlet ends of the pushing pin jacks face the same direction and are arranged on the side face of one side of the fixing ring, and the outlet ends of the pushing pin jacks are communicated with the conductive fiber jacks.

Furthermore, a motor bolt mounting hole axially penetrates through the fixing ring.

After the technical scheme is adopted, the beneficial effects of the utility model reside in that:

(1) When the fixing ring is sleeved on the outer periphery of the motor shaft, the conductive fibers are in contact with the outer periphery of the motor shaft, and in the rotating working process of the motor shaft, the conductive fibers are continuously and electrically connected with the motor shaft, so that the conductive fibers are grounded, the grounding of the motor shaft is realized, the structure for fixing the conductive fibers on the fixing ring is simple, and the mounting and fixing process is very convenient;

(2) Conductive fibers are fixed or loosened in the conductive fiber jack through the plugging of the abutting pin in the abutting pin jack, and when the abutting pin is not inserted into the abutting pin jack, the position of the conductive fibers in the conductive fiber jack can be adjusted, so that the conductive fiber jack has stronger universality.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic cross-sectional structure diagram of the present invention;

fig. 3 is a schematic perspective view of the fixing ring of the present invention;

fig. 4 is a schematic cross-sectional structure diagram of the fixing ring of the present invention.

Description of reference numerals: 1-fixing ring, 2-conductive fiber, 3-offset pin, 4-conductive fiber jack, 5-offset pin jack and 6-motor bolt mounting hole.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

The utility model provides a split type motor shaft grounding device, as shown in figures 1-4, comprising a fixing ring 1, conductive fibers 2 and a pressing pin 3;

the fixing ring 1 is in a circular ring shape, the inner diameter of the fixing ring is larger than or equal to the diameter of the motor shaft and is used for being sleeved on the periphery of the motor shaft, at least one conductive fiber jack 4 is formed in one side of the fixing ring 1 facing the annular center of the fixing ring, specifically, in the embodiment, a plurality of conductive fiber jacks 4 are formed, the conductive fiber jacks 4 are arranged in an array mode around the center circumference of the fixing ring 1, each conductive fiber jack 4 is in a circular hole shape and extends in the radial direction of the fixing ring 1 respectively, and the inner side wall (the side wall on the inner side of the annular shape) of the fixing ring 1 penetrates through to the outer side wall (the side wall on the outer side of the annular shape); the fixing ring 1 is further provided with a pressing pin jack 5 intersecting and communicating with the conductive fiber jack 4, the intersection angle between the pressing pin jack 5 and the conductive fiber jack 4 is not particularly limited, specifically in this embodiment, one pressing pin jack 5 is provided corresponding to each conductive fiber jack 4, each pressing pin jack 5 is in a circular hole shape extending linearly, one pressing pin jack 5 is correspondingly intersecting and communicating with one conductive fiber jack 4, each pressing pin jack 5 is perpendicular to the conductive fiber jack 4 communicated therewith, the inlet ends of the pressing pin jacks 5 face the same direction and are all provided on one side surface of the fixing ring 1, and the outlet ends are communicated with the conductive fiber jacks 4;

the conductive fiber 2 is arranged corresponding to each conductive fiber jack 4, the conductive fiber 2 can be made of any existing wear-resistant conductive material, the number of fiber strands contained in one conductive fiber 2 is not limited, specifically, in the embodiment, the conductive fiber 2 is formed by carbon fiber bundles plated with nickel and copper on the surface, and one conductive fiber 2 is correspondingly inserted into one conductive fiber jack 4;

each of the pressing pins 3 is provided with a pressing pin 3 corresponding to each of the pressing pin insertion holes 5, each of the pressing pins 3 is in a cylindrical shape extending linearly, the pressing pin 3 is used for being inserted into the corresponding pressing pin insertion hole 5, and further penetrates into the conductive fiber insertion hole 4 intersecting with the pressing pin insertion hole 5, so as to press the conductive fiber 2 in the conductive fiber insertion hole 4 against the hole wall of the conductive fiber insertion hole 4, and further fix the conductive fiber 2 in the conductive fiber insertion hole 4, and the pressing pin 3 can be axially locked in the pressing pin insertion hole 5, so as to prevent the pressing pin 3 from coming out of the pressing pin insertion hole 5, and thus the conductive fiber 2 is loosened in the conductive fiber insertion hole 4.

In the installation process, each conductive fiber 2 can be inserted into each conductive fiber jack 4, each conductive fiber 2 is exposed to a preset length according to the specification of a motor shaft, each pressing pin 3 is inserted into each pressing pin jack 5, and each conductive fiber 2 is pressed and fixed on the fixing ring 1; or a conductive fiber 2 can be inserted into a conductive fiber jack 4, and then a pressing pin 3 is inserted into a pressing pin jack 5 communicated with the conductive fiber jack 4, so that the conductive fiber 2 is fixed on the fixing ring 1, and then the steps are repeated, and the installation of the conductive fibers 2 is completed one by one.

In order to install and fix the fixing ring 1 on the motor, a motor bolt mounting hole 6 axially penetrates through the fixing ring 1, and one motor bolt mounting hole 6 is used for a bolt to penetrate through and connects the fixing ring 1 on the motor in a threaded manner.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the design of the present application, and all equivalent changes made according to the design key of the present application fall within the protection scope of the present application.

Claims

1. The utility model provides a split type motor shaft earthing device which characterized in that: comprises a fixed ring (1), conductive fibers (2) and a pressing pin (3);

one side of the fixing ring (1) facing the annular center is provided with at least one conductive fiber jack (4), and the fixing ring (1) is also provided with a pressing pin jack (5) which is intersected and communicated with the conductive fiber jack (4);

one conductive fiber (2) is arranged corresponding to each conductive fiber jack (4), and one conductive fiber (2) is correspondingly inserted into one conductive fiber jack (4);

and each abutting pin (3) is arranged corresponding to each abutting pin jack (5), and each abutting pin (3) is used for being inserted into the corresponding abutting pin jack (5) and further penetrating into the conductive fiber jack (4) intersected with the abutting pin jack (5) so as to tightly press the conductive fiber (2) in the conductive fiber jack (4) on the hole wall.

2. The split motor shaft grounding device of claim 1, wherein: the pressing pin (3) can be axially locked in the pressing pin insertion hole (5).

3. The split motor shaft grounding device of claim 1, wherein: the pressing pin (3) is inserted into the pressing pin insertion hole (5) in an interference mode.

4. The split motor shaft grounding device of claim 1, wherein: the conductive fiber insertion holes (4) extend radially on the fixing ring (1).

5. The split motor shaft grounding device of claim 1, wherein: the conductive fiber insertion holes (4) are formed in the fixing ring (1) in a penetrating mode.

6. The split motor shaft grounding device of claim 1, wherein: the conductive fiber jacks (4) are arranged in a plurality of circumferential arrays around the center of the fixing ring (1).

7. The split motor shaft grounding device of claim 1, wherein: the conductive fiber jack (4) is provided with one abutting pin jack (5), and one abutting pin jack (5) is correspondingly communicated with one conductive fiber jack (4) in an intersecting manner.

8. The split motor shaft grounding device of claim 7, wherein: each abutting pin jack (5) is perpendicular to the conductive fiber jacks (4) communicated with the abutting pin jacks.

9. The split motor shaft grounding device of claim 7, wherein: the inlet ends of the abutting pin jacks (5) face the same direction and are arranged on one side face of the fixing ring (1), and the outlet ends of the abutting pin jacks are communicated with the conductive fiber jacks (4).

10. The split motor shaft grounding device of claim 1, wherein: and a motor bolt mounting hole (6) axially penetrates through the fixing ring (1).