CN217335363U

CN217335363U - Small-sized integrated motor

Info

Publication number: CN217335363U
Application number: CN202220380224.XU
Authority: CN
Inventors: 陈昶; 张�荣; 朱冰雁
Original assignee: Shanghai Anpu Mingzhi Automation Equipment Co ltd
Current assignee: Shanghai Anpu Mingzhi Automation Equipment Co ltd
Priority date: 2022-02-24
Filing date: 2022-02-24
Publication date: 2022-08-30
Anticipated expiration: 2032-02-24

Abstract

The utility model relates to a small-size integrated form motor, including rear end housing, PCB board, back lid and pivot, the PCB board is including the upper plate that is used for realizing drive function, the hypoplastron that is used for realizing the encoder function and be used for realizing the inter-plate connector that upper plate and hypoplastron are connected, the rear end housing be equipped with the double-deck step fixed establishment who is used for upper plate and hypoplastron respectively. Compared with the prior art, the utility model has the advantages of motor size has been minimized.

Description

Small integrated motor

Technical Field

The utility model relates to a motor especially relates to a small-size integrated form motor.

Background

With the rapid development of automation technology, computer technology and electronic technology, the motor manufacturing technology level is rapidly developed, and higher requirements are provided for the utility model similar to the Nema8 miniature motor and the manufacturing and control application technology, so that a wider development space is provided.

The servo control system is an operating system capable of automatically controlling the mechanical movement of the experimental equipment according to the preset requirement. In many cases, the servo system is a feedback system in which the controlled variable (system output) is a mechanical displacement or a unit moving speed, and the main function of the feedback system is to make the mechanical displacement distance (or mechanical rotation angle) accurately track the input displacement. To improve control accuracy and servo capability, the motor is typically required to incorporate position sensors, such as encoders, to provide the real-time position of the motor to the drive or control system. In pursuit of high integration, motors and driving units are generally integrated together to meet many space-demanding applications, such as joints of robots, medical equipment, etc. For small motors (e.g., Nema8 size and below) where the back end cap space is limited, the design and installation of the encoder and drive units becomes difficult. The main technical defects of the general small integrated motor products are as follows:

1) the integration requirement is high, the size is easy to be enlarged, and components required by a driving unit and an encoder are difficult to design and arrange on the premise of not increasing the axial length and radial inertia of the motor too much;

2) the position feedback precision of the product cannot be ensured, and the concentricity requirement between the position detection device on the PCB assembly and the magnetic steel of the rotating shaft cannot be ensured, so that the magnetic steel is easy to fail to read;

3) the connector and other devices are unreasonable in design, are easy to be in an external force pulling state for a long time, and are a great test for the service life of the connector.

The retrieved Chinese patent publication No. CN111313620A discloses a bus type integrated motor based on optical fiber communication, which is an integrated motor and comprises a motor body and a driver part which are connected with each other, wherein the driver part comprises a driving plate and a communication plate which are designed in a split mode, and the integrated design of the motor and the driver not only reduces the wiring quantity inside a whole system of a client and reduces the risk of signal crosstalk inside the system, but also greatly saves the structural space and facilitates the miniaturization design of equipment. However, the prior patent still has the following problems: the driver and the encoder arrangement mode of the prior patent and the installation mode of the connector can not further realize the miniaturization of the motor and the like.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is to provide a small integrated motor for overcoming the above-mentioned drawbacks of the prior art.

The purpose of the utility model can be realized through the following technical scheme:

according to the utility model discloses an aspect provides a small-size integrated form motor, including rear end housing, PCB board, back lid and pivot, the PCB board is including the upper plate that is used for realizing drive function, the hypoplastron that is used for realizing the encoder function and be used for realizing the inter-plate connector that upper plate and hypoplastron are connected, the rear end housing be equipped with the double-deck step fixed establishment who is used for upper plate and hypoplastron respectively.

Preferably, the lower plate is closely attached to the rear end cover.

As a preferable technical scheme, a magnetic induction chip is arranged on the lower plate.

As an optimal technical scheme, the double-layer step fixing mechanism comprises an encoder fixing step, an encoder plate mounting hole, a drive plate fixing step and a drive plate mounting hole, the encoder fixing step and the encoder plate mounting hole are respectively connected with the lower plate in a positioning mode, and the drive plate fixing step and the drive plate mounting hole are respectively connected with the upper plate in a positioning mode.

As the preferred technical scheme, the fixed step of encoder be equipped with the step post that is used for the location to ensure the distance required precision between the magnet steel on magnetic induction chip and the pivot.

As a preferred technical solution, three inter-board connectors are provided, which are respectively a first inter-board connector, a second inter-board connector and a third inter-board connector, and are used for realizing the minimum distance between the two boards.

Preferably, the first inter-board connector is a 3PIN inter-board connector, and the second inter-board connector and the third inter-board connector are 4PIN inter-board connectors.

Preferably, baffles are arranged on two sides of the notch position of the inter-board connector.

As a preferable technical scheme, the lower plate is of a sectional arc structure matched with the rear end cover.

As the preferred technical scheme, the upper plate is provided with an MCU chip, an RS485 transceiver and an encoder signal connector.

Compared with the prior art, the utility model has the advantages of it is following:

(1) the utility model divides the functions of the driving unit and the encoder into an upper board and a lower board which are realized by two PCBs, thereby minimizing the radial size of the motor, and the lower board is tightly attached to the rear end cover of the motor, therefore, the axial length of the motor is hardly influenced;

(2) the utility model discloses link to each other with the plate-to-plate connector between two PCB boards (upper plate and lower plate), realized the minimum interval between two boards, ensured motor axial length minimizing, simultaneously, the distance precision and the depth of parallelism that magnet steel and magnetic induction chip required when encoder (lower plate) is installed are ensured to rear end cover double step to and the radial position of upper plate installation;

(3) the bottom surface PCB (lower plate) and the rear end cover adopt an arc-shaped matching mode, the PCB is difficult to be made into an accurate circle due to the processing reason, and the circle is required to be used for keeping the concentricity with the lower magnetic steel, so that the sectional arc is used for keeping the precision requirement.

Drawings

Fig. 1 is a schematic diagram of the explosion structure of the present invention;

fig. 2 is a schematic structural view of the lower plate of the present invention;

fig. 3 is a schematic structural view of the upper plate of the present invention;

fig. 4 is a schematic structural view of the rear end cap of the present invention;

the connector comprises a rear end cover 1, a PCB 2, a rear cover 3, a rotating shaft 4, an encoder fixing step 11, an encoder board mounting hole 12, a drive board fixing step 13, a drive board mounting hole 14, an upper board 21, a lower board 22, an inter-board connector 23, an MCU chip 211, an RS485 transceiver 212, an encoder signal connector 213, a magnetic induction chip 221, a first inter-board connector 231, a second inter-board connector 232 and a third inter-board connector 233.

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 some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.

As shown in fig. 1, a small integrated motor includes a rear end cap 1, a PCB 2, a rear cap 3, and a rotating shaft 4, where the PCB 2 includes an upper plate 21 for implementing a driving function, a lower plate 22 for implementing an encoder function, and an inter-plate connector 23 for implementing connection between the upper plate 21 and the lower plate 22, and the rear end cap 1 is provided with two-layer step fixing mechanisms respectively for the upper plate 21 and the lower plate 22.

The utility model discloses to little frame number integrated form motor (for example Nema8 and below), divide into PCB upper plate and hypoplastron, realize drive unit and encoder function respectively. The rear end cover is changed into a double-layer step fixing mode, the distance precision requirement of the magnetic induction chip and the magnetic steel on the rotating shaft is ensured by the lower plate mounting step, the radial positioning of the upper plate is realized by the upper plate mounting step, the requirement of the precise distance between the two PCB plates is ensured through the connectors between the two PCB plates, and the whole axial length of the motor is minimized. The step is additionally provided with the screw hole and the circular notch, so that the concentricity and the parallelism requirements of the chip and the magnetic steel are ensured, and the PCB can not fall off due to vibration in long-term use. The baffle plates are additionally arranged on two sides of the position of the connector notch, so that the PCB is uniformly stressed, and the service life is prolonged.

As shown in fig. 2, the lower plate 22 is tightly attached to the rear end cover 1, and has little influence on the axial length of the motor. The lower plate 22 is provided with a magnetic induction chip 221. The three board-to-board connectors 23 are a first board-to-board connector 231, a second board-to-board connector 232, and a third inter-board connector 233, respectively, and are used for realizing the minimum distance between the two boards. The first board-to-board connector 231 is a 3PIN board-to-board connector, and the second board-to-board connector 232 and the third board-to-board connector 233 are 4PIN board-to-board connectors

As shown in fig. 4, the double-layer step fixing mechanism includes an encoder fixing step 11, an encoder board mounting hole 12, a drive board fixing step 13, and a drive board mounting hole 14, the encoder fixing step 11 and the encoder board mounting hole 12 are respectively connected to a lower board 22 in a positioning manner, and the drive board fixing step 13 and the drive board mounting hole 14 are respectively connected to an upper board 21 in a positioning manner. The encoder fixing step 11 is provided with a step column for positioning, so that the distance precision requirement between the magnetic induction chip 221 and the magnetic steel on the rotating shaft 4 is ensured.

The lower plate 22 adopts a sectional arc structure matched with the rear end cover 1, and the PCB is difficult to be made into a precise circle due to the processing reason of the PCB, but the concentricity between the circle and the lower magnetic steel is required to be kept, so the accuracy requirement is kept by using the sectional arc.

As shown in fig. 3, the upper board 21 is provided with an MCU chip 211, an RS485 transceiver 212, and an encoder signal connector 213.

The utility model discloses a concrete installation as follows:

in the installation, can earlier with PCB hypoplastron (encoder function) and rear end cap notch complex, later with peripheral screw hole locking, wait to lock and finish, weld the connector between the board on the PCB board of below, later weld the upper plate and die the top of connecting between the board, not have the restriction of isolation distance between PCB upper plate and the hypoplastron like this, minimized the distance between the double-deck board. And finally, positioning by using the step columns with double steps, covering the rear cover, and fixing by using screws.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a small-size integrated form motor, includes rear end housing (1), PCB board (2), back lid (3) and pivot (4), its characterized in that, PCB board (2) are including upper plate (21) that are used for realizing the drive function, be used for realizing hypoplastron (22) of encoder function and be used for realizing inter-plate connector (23) that upper plate (21) and hypoplastron (22) are connected, rear end housing (1) be equipped with the double-deck step fixed establishment who is used for upper plate (21) and hypoplastron (22) respectively.

2. A miniature integrated motor as claimed in claim 1, wherein said lower plate (22) abuts against the rear end cap (1).

3. A miniature integrated motor as claimed in claim 1, wherein said lower plate (22) is provided with a magnetic induction chip (221).

4. A small-sized integrated motor according to claim 3, wherein said double-step fixing mechanism comprises an encoder fixing step (11), an encoder plate mounting hole (12), a drive plate fixing step (13) and a drive plate mounting hole (14), said encoder fixing step (11) and said encoder plate mounting hole (12) are respectively connected to the lower plate (22) in a positioning manner, and said drive plate fixing step (13) and said drive plate mounting hole (14) are respectively connected to the upper plate (21) in a positioning manner.

5. A small-sized integrated motor according to claim 4, wherein the encoder fixing step (11) is provided with a step pillar for positioning, so as to ensure the distance accuracy requirement between the magnetic induction chip (221) and the magnetic steel on the rotating shaft (4).

6. A small integrated electric motor as claimed in claim 1, characterized in that said plate-to-plate connectors (23) are provided in three, respectively a first plate-to-plate connector (231), a second plate-to-plate connector (232) and a third plate-to-plate connector (233), for achieving a minimum spacing between the plates.

7. A miniature integrated electrical machine according to claim 6, wherein said first board-to-board connector (231) is a 3PIN board-to-board connector and said second board-to-board connector (232) and third board-to-board connector (233) are 4PIN board-to-board connectors.

8. A miniature integrated motor as claimed in claim 1 or 6, wherein the slot of the interpanel connector is flanked by baffles.

9. A compact integrated motor as claimed in claim 1, wherein said lower plate (22) is of a segmented arc configuration cooperating with the rear end cap (1).

10. A small integrated motor as claimed in claim 1, wherein the MCU chip (211), the RS485 transceiver (212) and the encoder signal connector (213) are provided on the upper plate (21).