Encoder suitable for hollow shaft motor

Abstract

The utility model relates to the technical field of encoders, discloses an encoder suitable for a hollow shaft motor, and solves the problems that a certain gap needs to be reserved between a magnet ring and a PCB (Printed Circuit Board), and the PCB needs to be centrally fixed relative to a motor to be mounted, so that workers need to correct repeatedly. The rear cover is provided with a fixing unit matched with the bottom plate, a magnet ring and a PCB body are arranged in the rear cover, the bottom plate, the rear cover and the PCB body are each provided with a first avoiding hole matched with an output shaft of a motor to be installed, and the magnet ring is located on the side, away from the bottom plate, of the PCB body. Installation devices fixed to a motor to be installed are installed on the bottom plate and the PCB body respectively, a locking piece fixed to an output shaft of the motor to be installed is installed on the magnet ring, and a positioning structure matched with the magnet ring is installed on the bottom plate.

Description

TECHNICAL FIELD

[0001] The utility model belongs to encoder technical field, concretely is a kind of encoder suitable for hollow shaft motor use. BACKGROUND

[0002] Hollow shaft motor needs to install encoder when using, the difference between magnetic encoder and optical encoder in the face of harsh environment is that magnetic encoder is not influenced in the face of dust, dirt, liquid, grease and other pollutants and vibration environment, the chip on the PCB board in the magnetic encoder can induct the magnetic field of magnet ring, it generates necessary magnetic field signal by vertical rotation and with equipment center alignment placement, then the signal inducted by the chip on the PCB board is converted into the encoder signal required by motor closed-loop control, when magnetic encoder is installed, certain gap needs to be reserved between magnet ring and PCB board, and PCB board also needs to be fixed centrally relative to the motor to be installed, so staff needs to be repeatedly corrected, inconvenient for actual operation. UTILITARY MODEL

[0003] In view of the above situation, to overcome the defects of prior art, the utility model provides a kind of encoder suitable for hollow shaft motor use, effectively solve the problem that certain gap needs to be reserved between magnet ring and PCB board in the above background technology, and PCB board also needs to be fixed centrally relative to the motor to be installed, so staff needs to be repeatedly corrected.

[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of encoder suitable for hollow shaft motor use, including bottom plate and back cover, the back cover is equipped with the fixed unit compatible with bottom plate, magnet ring and PCB board body are equipped in back cover, and the first avoiding hole compatible with the output shaft of the motor to be installed is formed on bottom plate, back cover and PCB board body, magnet ring is located on the side of PCB board body away from bottom plate, and mounting device is installed on bottom plate and PCB board body respectively and fixed with the motor to be installed, magnet ring is equipped with the locking piece fixed with the output shaft of the motor to be installed, and bottom plate is equipped with the positioning structure compatible with magnet ring.

[0005] Preferably, the locking piece includes mounting hub fixedly installed on the magnet ring, the mounting hub is used to be installed on the output shaft of the motor to be installed, a plurality of fastening screws are penetrated on the mounting hub, and the connection mode of fastening screw and mounting hub is screw connection.

[0006] Preferably, the positioning structure includes mounting plate fixedly installed on bottom plate, mounting groove compatible with mounting plate is formed on back cover, sliding plate is penetrated on mounting plate, the bottom end of sliding plate is fixedly connected with arc-shaped plate compatible with magnet ring, arc-shaped plate is fixedly installed on the baffle between magnet ring and PCB board body, and mounting plate is equipped with the plug-in unit compatible with sliding plate.

[0007] Preferably, the plug-in unit includes an iron plate fixedly mounted on the mounting plate, a plug-in plate passes through the iron plate, two plug-in holes adapted to the plug-in plate are provided on the slide plate, and a magnet block magnetically attracted to the iron plate is fixedly mounted on the plug-in plate.

[0008] Preferably, the installer includes a plurality of positioning posts fixedly mounted on the PCB board body, a plurality of positioning holes compatible with the positioning posts are opened on the base plate, and the positioning posts are located in the corresponding positioning holes, and a plurality of bolts for fixedly connecting with the motor to be installed are provided on the side of the PCB board body away from the base plate, and a plurality of second avoidance holes compatible with the bolts are opened on the base plate and the PCB board body, the bolts pass through the corresponding two second avoidance holes, and the diameter of the second avoidance holes is larger than the diameter of the bolts.

[0009] Preferably, the fixing unit includes a plurality of elastic buckles fixedly mounted on the back cover, and a plurality of slots adapted to the elastic buckles are formed on the bottom plate.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] The staff will sequentially put the base plate, PCB board body and magnet ring on the outside of the output shaft of the motor to be installed, and locate the position of the magnet ring through the positioning structure on the base plate. The magnet ring is in a preset position relative to the motor to be installed. At the same time, the base plate and PCB board body are positioned relative to the magnet ring and the position of the motor to be installed. The magnet ring is fixedly connected to the output shaft of the motor to be installed through the locking part, and the base plate and PCB board body are fixedly installed on the housing of the motor to be installed through the installer. Finally, the staff will fix the back cover on the base plate through the fixing unit, and protect the magnet ring and PCB board body through the back cover. The space inside the encoder is used to install the magnet ring and PCB board body in a narrow space. The installation and correction of the magnet ring and PCB board body can be completed simply and conveniently, which is convenient for actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0013] In the attached figure:

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the encoder of the utility model after installation with the motor to be installed;

[0016] Figure 3It is a structure schematic view of the back cover of the utility model;

[0017] Figure 4 It is a structure schematic view of the magnet ring and the mounting hub of the utility model;

[0018] Figure 5 It is a structure schematic view of the mounting plate and the sliding plate of the utility model;

[0019] Figure 6 It is a structure schematic view of the bottom plate and the PCB plate body of the utility model.

[0020] In the drawing: 1, bottom plate; 2, back cover; 3, first avoiding hole; 4, magnet ring; 5, PCB plate body; 6, mounting hub; 7, fastening screw; 8, mounting plate; 9, mounting groove; 10, arc plate; 11, baffle; 12, sliding plate; 13, plugboard; 14, jack; 15, iron plate; 16, magnet block; 17, positioning hole; 18, positioning column; 19, bolt; 20, second avoiding hole; 21, elastic buckle; 22, clamping groove; 23, motor to be installed. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] Embodiment one, by Figure 1 , Figure 2 and Figure 3The utility model includes a base plate 1 and a back cover 2, the back cover 2 is equipped with a fixing unit adapted to the base plate 1, a magnet ring 4 and a PCB board body 5 are provided in the back cover 2, and a first avoidance hole 3 adapted to the output shaft of the motor 23 to be installed is opened on the base plate 1, the back cover 2 and the PCB board body 5, the magnet ring 4 is located on the side of the PCB board body 5 away from the base plate 1, and installers respectively fixed to the motor 23 to be installed are installed on the base plate 1 and the PCB board body 5, the magnet ring 4 is equipped with a locking piece fixed to the output shaft of the motor 23 to be installed, and the base plate 1 is equipped with a positioning structure adapted to the magnet ring 4; the staff will sequentially sleeve the base plate 1, the PCB board body 5 and the magnet ring 4 on the outside of the output shaft of the motor 23 to be installed, and through the base plate 1 The positioning structure locates the position of the magnet ring 4, and the magnet ring 4 is in a preset position relative to the motor 23 to be installed. At the same time, the base plate 1 and the PCB board body 5 are positioned relative to the magnet ring 4 and the motor 23 to be installed. The magnet ring 4 is fixedly connected to the output shaft of the motor 23 to be installed through the locking piece, and the base plate 1 and the PCB board body 5 are fixedly installed on the housing of the motor 23 to be installed through the installer. Finally, the staff fixes the back cover 2 on the base plate 1 through the fixing unit, and protects the magnet ring 4 and the PCB board body 5 through the back cover 2. The space inside the encoder is used to install the magnet ring 4 and the PCB board body 5 in a narrow space. The installation and correction of the magnet ring 4 and the PCB board body 5 can be completed simply and conveniently, which is convenient for actual use.

[0023] Example 2, based on Example 1, Figure 3 、 Figure 4 and Figure 5 It is given that the locking part includes a mounting hub 6 fixedly mounted on the magnet ring 4, the mounting hub 6 is used to be mounted on the output shaft of the motor 23 to be installed, and a number of fastening screws 7 are passed through the mounting hub 6, and the fastening screws 7 and the mounting hub 6 are connected in a threaded manner. The positioning structure includes a mounting plate 8 fixedly mounted on the base plate 1, a mounting groove 9 adapted to the mounting plate 8 is provided on the back cover 2, a slide plate 12 is passed through the mounting plate 8, the bottom end of the slide plate 12 is fixedly connected to an arc-shaped plate 10 adapted to the magnet ring 4, the arc-shaped plate 10 is fixedly mounted on a baffle 11 located between the magnet ring 4 and the PCB board body 5, the mounting plate 8 is installed with a plug-in unit adapted to the slide plate 12, the plug-in unit includes an iron plate 15 fixedly mounted on the mounting plate 8, the iron plate 15 is passed through a plug-in plate 13, the slide plate 12 is provided with two sockets 14 adapted to the plug-in plate 13, and the plug-in plate 13 is fixedly mounted with a magnet block 16 that is magnetically attracted to the iron plate 15;

[0024] The staff will sleeve the mounting hub 6 on the outside of the output shaft of the motor 23 to be installed, and push the mounting hub 6 and the magnet ring 4 toward the PCB board body 5 to make the magnet ring 4 contact with the baffle 11. The magnet ring 4 applies pressure to the bottom plate 1 through the mounting plate 8, and the bottom plate 1 is in contact with the motor 23 to be installed. The distance between the magnet ring 4 and the bottom plate 1 and the PCB board body 5 is at a preset value. The staff drives the bottom plate 1 and the PCB board body 5 to move in the vertical direction to make the arc plate 10 contact with the outer wall of the magnet ring 4. The bottom plate 1 and the PCB board body 5 are centered relative to the motor 23 to be installed. The staff drives the fastening screw 7 to rotate so that the end of the fastening screw 7 abuts against the output shaft of the motor 23 to be installed, so that the mounting hub 6 and the magnet ring 4 are fixed relative to the output shaft of the motor 23 to be installed, and the bottom plate 1 is fixed by the installer. The board 1 and the PCB board body 5 are fixedly installed on the housing of the motor 23 to be installed, and then the staff drives the magnet block 16 to move so that the magnet block 16 is no longer magnetically attracted to the iron plate 15, and the end of the plug-in plate 13 is disengaged from the corresponding socket 14. The staff drives the slide plate 12, the curved plate 10 and the baffle 11 to move upward so that the baffle 11 and the curved plate 10 are no longer in contact with the magnet ring 4, and the other socket 14 is moved to one side of the plug-in plate 13. The staff pushes the magnet block 16 and the plug-in plate 13 to move relative to the iron plate 15 so that the end of the plug-in plate 13 away from the magnet block 16 is inserted into the corresponding socket 14, and the magnet block 16 and the iron plate 15 are magnetically attracted, so that the curved plate 10 and the baffle 11 can be fixed relative to the mounting plate 8 and the base plate 1, thereby preventing the curved plate 10 and the baffle 11 from interfering with the motor 23 to be installed and driving the magnet ring 4 and the mounting hub 6 to rotate.

[0025] Example 3, based on Example 1, Figure 1 、 Figure 3 and Figure 6 The installer includes several positioning posts 18 fixedly mounted on the PCB body 5, and several positioning holes 17 adapted to the positioning posts 18 are opened on the bottom plate 1, and the positioning posts 18 are located in the corresponding positioning holes 17. A plurality of bolts 19 for fixedly connecting to the motor 23 to be installed are provided on the side of the PCB body 5 away from the bottom plate 1. Several second avoidance holes 20 adapted to the bolts 19 are opened on the bottom plate 1 and the PCB body 5. The bolts 19 pass through the two corresponding second avoidance holes 20, and the diameter of the second avoidance holes 20 is larger than the diameter of the bolts 19. The fixing unit includes several elastic buckles 21 fixedly mounted on the back cover 2, and several card slots 22 adapted to the elastic buckles 21 are opened on the bottom plate 1.

[0026] The staff first sleeves the bottom plate 1 and the PCB board body 5 on the outside of the output shaft of the motor 23 to be installed in sequence, and inserts the positioning column 18 on the PCB board body 5 into the corresponding positioning hole 17, so that the bottom plate 1 and the PCB board body 5 can move synchronously in the vertical direction. Then the staff drives the bolt 19 to pass through the second avoidance hole 20 on the PCB board body 5 and the bottom plate 1, and the end of the bolt 19 is screwed into the housing of the motor 23 to be installed, so that the bottom plate 1 and the PCB board body 5 are preliminarily fixed relative to the motor 23 to be installed. The motor 23 to be installed, the bottom plate 1 and the PCB board body 5 are in contact with each other, and because the diameter of the second avoidance hole 20 is larger than the diameter of the bolt 19, the bottom plate 1 and the PCB board body 5 can be relatively The motor 23 to be installed and the bolt 19 are vertically centered, and then the staff puts the magnet ring 4 on the output shaft of the motor 23 to be installed. When the position of the magnet ring 4 is positioned by the positioning structure on the base plate 1, the magnet ring 4 is in a preset position relative to the motor 23 to be installed, and the base plate 1 and the PCB board body 5 are corrected and positioned relative to the magnet ring 4 and the motor 23 to be installed. The staff rotates the bolt 19 again to make the motor 23 to be installed, the base plate 1 and the PCB board body 5 tightly attached to each other, completing the fixation of the base plate 1 and the PCB board body 5. The staff drives the back cover 2 to move so that the elastic clip 21 on the back cover 2 is snapped into the slot 22 on the base plate 1, and the installation of the back cover 2 is completed.

[0027] Working principle: The staff will sequentially sleeve the bottom plate 1, the PCB board body 5 and the magnet ring 4 on the outside of the output shaft of the motor 23 to be installed, and locate the position of the magnet ring 4 through the positioning structure on the bottom plate 1. The magnet ring 4 is in a preset position relative to the motor 23 to be installed. At the same time, the bottom plate 1 and the PCB board body 5 are positioned relative to the magnet ring 4 and the motor 23 to be installed. The magnet ring 4 is fixedly connected to the output shaft of the motor 23 to be installed through the locking piece, and the bottom plate 1 and the PCB board body 5 are fixedly installed on the housing of the motor 23 to be installed through the installer. Finally, the staff will fix the back cover 2 on the bottom plate 1 through the fixing unit, and protect the magnet ring 4 and the PCB board body 5 through the back cover 2. The space inside the encoder is used to install the magnet ring 4 and the PCB board body 5 in a narrow space. The installation and correction of the magnet ring 4 and the PCB board body 5 can be completed simply and conveniently, which is convenient for actual use.

[0028] The staff will sleeve the mounting hub 6 on the outside of the output shaft of the motor 23 to be installed, and push the mounting hub 6 and the magnet ring 4 toward the PCB board body 5 to make the magnet ring 4 contact with the baffle 11. The magnet ring 4 applies pressure to the base plate 1 through the mounting plate 8, and the base plate 1 is in contact with the motor 23 to be installed. The distance between the magnet ring 4 and the base plate 1 and the PCB board body 5 is at a preset value. The staff drives the base plate 1 and the PCB board body 5 to move in the vertical direction so that the arc plate 10 contacts the outer wall of the magnet ring 4. The base plate 1 and the PCB board body 5 are centered relative to the motor 23 to be installed. The staff drives the fastening screw 7 to rotate so that the end of the fastening screw 7 abuts against the output shaft of the motor 23 to be installed, so that the mounting hub 6 and the magnet ring 4 are fixed relative to the output shaft of the motor 23 to be installed, and the base plate 1 and the PCB board body 5 are fixedly installed on The motor 23 to be installed is mounted on the housing, and then the staff drives the magnet block 16 to move so that the magnet block 16 is no longer magnetically attracted to the iron plate 15, and the end of the plug plate 13 is separated from the corresponding socket 14. The staff drives the slide plate 12, the arc plate 10 and the baffle 11 to move upward so that the baffle 11 and the arc plate 10 are no longer in contact with the magnet ring 4, and the other socket 14 is moved to one side of the plug plate 13. The staff pushes the magnet block 16 and the plug plate 13 to move relative to the iron plate 15 so that the end of the plug plate 13 away from the magnet block 16 is inserted into the corresponding socket 14, and the magnet block 16 and the iron plate 15 are magnetically attracted, so that the arc plate 10 and the baffle 11 are fixed relative to the mounting plate 8 and the bottom plate 1, avoiding the arc plate 10 and the baffle 11 interfering with the motor 23 to be installed to drive the magnet ring 4 and the mounting hub 6 to rotate. When the bottom plate 1 and the back cover 2 are fixed together, the mounting plate 8 is inserted into the mounting groove (9);

[0029] The staff first sleeves the bottom plate 1 and the PCB board body 5 on the outside of the output shaft of the motor 23 to be installed in sequence, and inserts the positioning column 18 on the PCB board body 5 into the corresponding positioning hole 17, so that the bottom plate 1 and the PCB board body 5 can move synchronously in the vertical direction. Then the staff drives the bolt 19 to pass through the second avoidance hole 20 on the PCB board body 5 and the bottom plate 1, and the end of the bolt 19 is screwed into the housing of the motor 23 to be installed, so that the bottom plate 1 and the PCB board body 5 are preliminarily fixed relative to the motor 23 to be installed. The motor 23 to be installed, the bottom plate 1 and the PCB board body 5 are in contact with each other, and because the diameter of the second avoidance hole 20 is larger than the diameter of the bolt 19, the bottom plate 1 and the PCB board body 5 can be relatively The motor 23 to be installed and the bolt 19 are vertically centered, and then the staff puts the magnet ring 4 on the output shaft of the motor 23 to be installed. When the position of the magnet ring 4 is positioned by the positioning structure on the base plate 1, the magnet ring 4 is in a preset position relative to the motor 23 to be installed, and the base plate 1 and the PCB board body 5 are corrected and positioned relative to the magnet ring 4 and the motor 23 to be installed. The staff rotates the bolt 19 again to make the motor 23 to be installed, the base plate 1 and the PCB board body 5 tightly attached to each other, completing the fixation of the base plate 1 and the PCB board body 5. The staff drives the back cover 2 to move so that the elastic clip 21 on the back cover 2 is snapped into the slot 22 on the base plate 1, and the installation of the back cover 2 is completed.

[0030] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An encoder suitable for use with a hollow shaft motor, comprising a base plate (1) and a rear cover (2), characterized in that: The rear cover (2) is provided with a fixing unit adapted to the base plate (1), a magnet ring (4) and a PCB board body (5) are provided in the rear cover (2), and a first avoidance hole (3) adapted to the output shaft of the motor (23) to be installed is provided on the base plate (1), the rear cover (2) and the PCB board body (5), the magnet ring (4) is located on a side of the PCB board body (5) away from the rear plate (1), and installers respectively fixed to the motor (23) to be installed are provided on the base plate (1) and the PCB board body (5), a locking member fixed to the output shaft of the motor (23) to be installed is provided on the magnet ring (4), and a positioning structure adapted to the magnet ring (4) is provided on the base plate (1).

2. The encoder suitable for use with a hollow shaft motor according to claim 1, characterized in that: The locking member includes a mounting hub (6) fixedly mounted on the magnet ring (4), the mounting hub (6) being used to be mounted on the output shaft of the motor (23) to be mounted, a plurality of fastening screws (7) passing through the mounting hub (6), and the fastening screws (7) and the mounting hub (6) are connected in a threaded manner.

3. The encoder suitable for use with a hollow shaft motor according to claim 1, characterized in that: The positioning structure comprises a mounting plate (8) fixedly mounted on the base plate (1); a mounting groove (9) adapted to the mounting plate (8) is provided on the rear cover (2); a slide plate (12) passes through the mounting plate (8); a curved plate (10) adapted to the magnet ring (4) is fixedly connected to the bottom end of the slide plate (12); the curved plate (10) is fixedly mounted on a baffle (11) located between the magnet ring (4) and the PCB board body (5); and a plug-in unit adapted to the slide plate (12) is installed on the mounting plate (8).

4. The encoder suitable for use with a hollow shaft motor according to claim 3, characterized in that: The plug-in unit comprises an iron plate (15) fixedly mounted on the mounting plate (8), a plug-in plate (13) passing through the iron plate (15), two plug holes (14) adapted to the plug-in plates (13) are provided on the slide plate (12), and a magnet block (16) magnetically attracted to the iron plate (15) is fixedly mounted on the plug-in plate (13).

5. The encoder suitable for use with a hollow shaft motor according to claim 1, characterized in that: The installer comprises a plurality of positioning posts (18) fixedly mounted on the PCB board body (5); a plurality of positioning holes (17) adapted to the positioning posts (18) are provided on the bottom plate (1), and the positioning posts (18) are located in the corresponding positioning holes (17); a plurality of bolts (19) for fixedly connecting to the motor (23) to be installed are provided on a side of the PCB board body (5) away from the bottom plate (1); a plurality of second avoidance holes (20) adapted to the bolts (19) are provided on both the bottom plate (1) and the PCB board body (5); the bolts (19) pass through the two corresponding second avoidance holes (20), and the diameter of the second avoidance holes (20) is larger than the diameter of the bolts (19).

6. The encoder suitable for use with a hollow shaft motor according to claim 1, characterized in that: The fixing unit comprises a plurality of elastic buckles (21) fixedly mounted on the rear cover (2), and a plurality of slots (22) adapted to the elastic buckles (21) are provided on the bottom plate (1).

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