Motor hollow shaft with data communication

Abstract

The utility model relates to motor shaft technical field, and disclose a kind of hollow shaft of motor with data communication, including motor shaft, the inside of motor shaft is detachably connected with electric ring carbon brush PCB board, and electric ring carbon brush PCB board is electrically connected with data transmission line, the inside of motor shaft is sequentially assembled with second bearing, electric ring from left to right, first bearing, and encoder magnetic ring is fixedly connected on motor shaft, electric ring is located the inside of first bearing and second bearing, and electric ring carbon brush PCB board is connected in the inside of motor shaft by several screws, the utility model structure is simple, and the precision requirement of part is low, there is no limit motor rotation angle, and assembly is simple, and assembly skill is not needed, in addition, service life is long, carbon brush can be replaced to maintain after carbon brush wear, maintenance is convenient and low in cost, different carbon brush can also be selected to realize the transmission of large current.

Description

Technical Field

[0001] This utility model relates to the field of motor shaft technology, specifically a hollow motor shaft with data communication capabilities. Background Technology

[0002] Currently, the common solutions for communication data transmission between the two ends of a motor are to limit the number of rotations of the motor, using mechanical limit switches to restrict the number of rotations, or using a slip ring to solve the communication data transmission problem between the two ends of the motor.

[0003] Current technology has several problems: First, using mechanical limiters to limit the number of motor rotations will generate noise and impact from the limiter's impact. Long-term impact will cause fatigue and aging of the limiter mechanism, leading to the risk of limiter failure. Limiter failure will cause the communication line to break, resulting in communication failure. Second, using slip rings will add a finished component, increasing costs and limiting the space of the motor shaft. Slip rings will also limit the amount of current that can pass through. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] The purpose of this invention is to solve the problems of mechanical limiters limiting the number of rotations of a motor, which can generate noise and impact from the limiter's impact. Prolonged impact can lead to fatigue and aging of the limiter mechanism, resulting in the risk of limiter failure. Limiter failure can lead to breakage of the communication line, communication failure, and the use of a slip ring cable, which adds a finished component, increases costs, restricts the space of the motor shaft, and limits the amount of current that can pass through. Therefore, this invention proposes a hollow shaft for a motor with data communication.

[0006] (II) Technical Solution

[0007] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0008] A hollow motor shaft with data communication includes a motor shaft, a conductive ring carbon brush PCB board detachably connected to the inner side of the motor shaft, a data transmission line electrically connected to the conductive ring carbon brush PCB board, and a second bearing, a conductive ring, and a first bearing sequentially assembled on the inner side of the motor shaft from left to right. An encoder magnetic ring is fixedly connected to the motor shaft, and the conductive ring is located inside the first bearing and the second bearing.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Preferably, the conductive ring carbon brush PCB board is connected to the inside of the motor shaft by a number of screws.

[0011] (III) Beneficial Effects

[0012] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0013] 1. This utility model has a simple structure, low requirements for the precision of parts, and no limitation on the rotation angle of the motor.

[0014] 2. This utility model is simple to assemble and requires no assembly skills.

[0015] 3. This utility model has a long service life. After the carbon brush wears out, it can be replaced for maintenance, which is convenient and low cost.

[0016] 4. This utility model achieves high current transmission by setting a conductive ring carbon brush PCB board and selecting different carbon brushes. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the exploded structure of this utility model;

[0018] Figure 2 This is a cross-sectional schematic diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the data communication and transmission structure required at both ends of the motor shaft of this utility model.

[0020] In the diagram: 1. First bearing; 2. Conductive ring; 3. Second bearing; 4. Encoder magnetic ring; 5. Motor shaft; 6. Conductive ring carbon brush PCB board; 7. Screw. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In the embodiments, by Figure 1-3 A hollow motor shaft with data communication is provided, comprising a motor shaft 5, a conductive ring carbon brush PCB board 6 detachably connected to the inner side of the motor shaft 5, a data transmission line electrically connected to the conductive ring carbon brush PCB board 6, a second bearing 3, a conductive ring 2, and a first bearing 1 sequentially assembled from left to right on the inner side of the motor shaft 5, an encoder magnetic ring 4 fixedly connected to the motor shaft 5, the conductive ring 2 being located inside the first bearing 1 and the second bearing 3, and the conductive ring carbon brush PCB board 6 being connected to the inner side of the motor shaft 5 by a number of screws 7.

[0023] With the above settings, data communication transmission is required between the front and rear ends of the motor shaft 5, such as... Figure 1As shown, the PCB boards on the left and right sides of motor shaft 5 require data communication. The PCB board on the left side rotates with motor shaft 5, while the PCB board on the right side is fixed to the motor housing. The wires of the conductive ring carbon brush PCB board 6 with data transmission lines are passed through motor shaft 5, and connected to the PCB board on the left side of the motor. Then, the outer ring of the second bearing 3 is assembled into the inner hole of motor shaft 5, and one end of the conductive ring 2 is assembled into the inner ring of the bearing. Finally, the inner ring of the first bearing 1 is... The outer ring of the bearing is assembled to the outer end of the conductive ring 2, and the outer ring of the bearing is assembled into the inner hole of the motor shaft 5. The conductive ring 2, which has a data transmission line, is connected to the PCB board on the right end of the motor shaft 5. Finally, the conductive ring carbon brush PCB board 6 with the data transmission line is fixed to the motor shaft 5 with screws 7, and the encoder magnetic ring 4 is fixed to the motor shaft 5. The change in the magnetic field of the encoder magnetic ring 4 sensed by the PCB board on the right end of the motor shaft 5 controls the motor, thereby realizing the rotation of the motor shaft 5. The conductive ring 2 with the data transmission line remains stationary, and data communication transmission can also be achieved. It should be noted that from Figure 2 As can be seen, the conductive carbon brush PCB board has pins (i.e., carbon brushes). The pins ensure that the conductive ring carbon brush PCB board 6 is always in contact with the conductive ring 2 as the motor shaft 5 rotates, thus ensuring normal data transmission.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hollow motor shaft with data communication, comprising a motor shaft (5), characterized in that, The inner side of the motor shaft (5) is detachably connected to a conductive ring carbon brush PCB board (6), and a data transmission line is electrically connected to the conductive ring carbon brush PCB board (6). The inner side of the motor shaft (5) is sequentially equipped with a second bearing (3), a conductive ring (2), and a first bearing (1) from left to right. An encoder magnetic ring (4) is fixedly connected to the motor shaft (5). The conductive ring (2) is located inside the first bearing (1) and the second bearing (3).

2. A hollow motor shaft with data communication according to claim 1, characterized in that: The conductive ring carbon brush PCB board (6) is connected to the inside of the motor shaft (5) by several screws (7).

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