Encoder and method for aligning encoder

Abstract

The present invention provides an encoder for facilitating horizontal alignment, vertical alignment, and phase alignment of the encoder, and an encoder alignment method for easily aligning the encoder with respect to a rotating device. According to the present invention, an encoder in which alignment is performed through fastening and separation of a lock device comprises: a hub coupled to a rotating device; a disk coupled to the hub and rotating together with the rotating device; a receiving unit for receiving a signal corresponding to a pattern of the disk; a circuit board provided with the receiving unit; and a body unit supporting the circuit board. Horizontal alignment and vertical alignment are performed in a state in which the lock device is fastened to the body unit, and phase alignment is performed in a state in which the lock device is separated from the body unit.

Description

Encoder and Encoder Alignment Method

[0001] The present invention relates to an encoder and an encoder alignment method, and more specifically, to an encoder and an encoder alignment method in which alignment is performed using a coupling and separation structure of a locking device.

[0002] Encoders are used to precisely measure the position, speed, and direction of rotating devices, and for this purpose, alignment between the encoder and the device is essential. Encoder alignment is broadly classified into horizontal alignment, vertical alignment, and signal phase alignment. Horizontal alignment is the process of positioning the encoder and the device so that they share the same axis, while vertical alignment involves positioning the encoder disk and the sensor to maintain an appropriate spacing. Furthermore, phase alignment between the encoder's U-phase signal and the device's R-phase back EMF signal is the process of ensuring that the encoder's mechanical position information and the device's electrical position information match exactly; this is a critical factor in high-precision applications such as motor control.

[0003] Built-in encoders must be shipped in a pre-aligned state before being provided to the customer, specifically with the phase alignment of the U-phase signal and the R-phase back EMF signal completed. However, conventional technology does not provide clear mention of separate procedures or devices for phase alignment, which necessitates an additional alignment process at end-use, potentially causing difficulties during the initial installation and adjustment of the encoder. This issue can be critical, particularly in applications requiring precise position control.

[0004] Phase alignment is a critical process that ensures the control system receives reliable feedback by accurately matching position data between the encoder and the rotary device. Without phase alignment, discrepancies may arise between the position information provided by the encoder and the actual state of the rotary device, which increases control errors and ultimately leads to performance degradation. Therefore, phase alignment is essential during the initial assembly and installation phases of built-in encoders, and technical improvements are required to simplify this process.

[0005] To solve the aforementioned problem, the present invention aims to provide an encoder that facilitates horizontal alignment, vertical alignment, and phase alignment.

[0006] In addition, the present invention aims to provide an encoder alignment method for easily aligning an encoder with respect to a rotating device.

[0007] To achieve the above-mentioned purpose, an encoder according to an embodiment of the present invention is an encoder in which alignment is performed through the engagement and disengagement of a locking device, comprising: a hub coupled to a rotating device; a disk coupled to the hub and rotating together with the rotating device; a receiver receiving a signal corresponding to a pattern of the disk; a circuit board equipped with the receiver; and a body supporting the circuit board, wherein horizontal alignment and vertical alignment are performed while the locking device is engaged with the body, and phase alignment can be performed while the locking device is disengaged from the body.

[0008] In addition, in an embodiment of the present invention, the locking device is fastened to the body portion and fixed in the vertical and horizontal directions, and the protrusion of the locking device is inserted into the recess of the hub to fix the hub in the vertical and horizontal directions.

[0009] In addition, the encoder according to an embodiment of the present invention further comprises a cover portion coupled to the body portion; wherein the body portion can support the circuit board in a vertical direction when the cover portion is separated, and can support the circuit board in a horizontal direction when the cover portion is coupled.

[0010] In addition, in an embodiment of the present invention, the body portion includes a guide portion formed to protrude vertically from the body of the body portion and spaced horizontally from the circuit board, and the cover portion includes a push portion formed to protrude horizontally from the inner side of the cover portion, and when the push portion pushes the guide portion horizontally, the guide portion contacts the circuit board to fix the circuit board.

[0011] Meanwhile, an encoder alignment method according to an embodiment of the present invention may include: a positioning step of positioning the encoder, which is provided with a disk rotating together with a rotating device, a receiving unit receiving a signal corresponding to a pattern of the disk, a circuit board having the receiving unit, and a body unit supporting the circuit board, on the rotating device while the locking device is engaged; and a phase alignment step of rotating the circuit board while the locking device is disengaged to match the phase of the U-phase signal of the encoder with the R-phase back EMF signal of the rotating device.

[0012] In addition, in an embodiment of the present invention, the positioning step may include the step of coupling a hub to the rotation axis of the rotating device, the step of fixing the body part to the rotating device, and the step of separating the locking device from the body part.

[0013] In addition, the encoder alignment method according to an embodiment of the present invention may further include a fixing step of fixing the circuit board by coupling a cover portion to the body portion.

[0014] In addition, in an embodiment of the present invention, the fixing step may include a first pressing step in which the push portion of the cover portion presses the guide portion of the body portion in a horizontal direction, and a second pressing step in which the guide portion presses the circuit board in a horizontal direction.

[0015] The present invention has the effect of facilitating phase alignment in addition to horizontal and vertical alignment of the encoder.

[0016] In addition, the present invention has the effect of preventing wear on the encoder components by performing phase alignment with the locking device removed, and being free from limitations such as the rotation speed and rotation time of the rotating device.

[0017] FIG. 1 is a diagram showing the disassembled state of an encoder according to an embodiment of the present invention.

[0018] Figure 2(a) is a drawing showing a state in which a locking device is coupled to an encoder according to an embodiment of the present invention.

[0019] Figure 2(b) is a drawing showing the state in which a locking device is fastened to a body part in an embodiment of the present invention.

[0020] Figure 2(c) is a diagram showing the state in which the lock device grips the hub in an embodiment of the present invention.

[0021] Figure 2(d) is a drawing showing a locking device in an embodiment of the present invention.

[0022] FIG. 3 is a diagram showing the sequence of an encoder alignment method according to an embodiment of the present invention.

[0023] FIG. 4 is a diagram showing the state in which an encoder is positioned on a rotating device in an embodiment of the present invention.

[0024] FIG. 5 is a diagram showing the state of fixing the hub to the rotation axis in an embodiment of the present invention.

[0025] FIG. 6 is a drawing showing the state of fixing the body part to the rotating device in an embodiment of the present invention.

[0026] FIG. 7 is a diagram showing the state of separating the locking device from the body part in an embodiment of the present invention.

[0027] FIG. 8(a) is a diagram showing the state in which phase alignment is performed in an embodiment of the present invention.

[0028] Figure 8(b) is a diagram showing a signal in a state where phase alignment is completed in an embodiment of the present invention.

[0029] FIG. 9 is a drawing showing the state in which the cover part is coupled to the body part in an embodiment of the present invention.

[0030] Figure 10 (a) is a diagram showing the state before the circuit board is fixed in an embodiment of the present invention.

[0031] Figure 10 (b) is a diagram showing the state after the circuit board is fixed in an embodiment of the present invention.

[0032] A person skilled in the art can develop various devices that embody the principles of the invention and are included within the concept and scope of the invention, even though they are not explicitly described or illustrated in this specification. Furthermore, all conditional terms and embodiments listed in this specification are, in principle, explicitly intended only for the purpose of enabling an understanding of the concept of the invention and should be understood as not being limited to the embodiments and conditions specifically listed as such.

[0033] The aforementioned objectives, features, and advantages will become more apparent through the following detailed description of the invention in conjunction with the attached drawings, and accordingly, a person skilled in the art to which the invention pertains will be able to easily implement the technical concept of the invention.

[0034] The embodiments described herein will be explained with reference to cross-sectional and / or perspective views, which are exemplary illustrations of the present invention. The dimensions, etc., of the components illustrated in these drawings may be exaggerated for effective explanation of the technical content. The shapes of the exemplary illustrations may be modified due to manufacturing techniques and / or tolerances, etc.

[0035] While describing various embodiments, for convenience, the same name and the same reference number are assigned to components performing the same function, even if the embodiments are different. Additionally, the expression 'at least one of A, B, and C' means that it is composed of a combination of one, two, or three of A, B, and C. The horizontal direction means a direction perpendicular to the rotation axis (21), and the vertical direction may mean a direction parallel to the rotation axis (21). The inner and outer parts mean a part close to the rotation axis (21) and a part far from the rotation axis (21), respectively.

[0036] Hereinafter, an encoder (10) (hereinafter referred to as 'encoder') according to an embodiment of the present invention will be described.

[0037] First, let's look at the structure of the encoder (10).

[0038] FIG. 1 is a diagram showing the disassembled state of an encoder (10) according to an embodiment of the present invention.

[0039] Referring to FIG. 1, an encoder (10) according to an embodiment of the present invention may be aligned through the fastening and unfastening of a locking device (800). The encoder (10) may include a hub (200) coupled to a rotating device (20); a disk (300) coupled to the hub (200) and rotating together with the rotating device (20); a transmitter (610) providing a signal toward the disk (300); a receiver (620) receiving a signal corresponding to a pattern of the disk (300); a circuit board (400) equipped with the receiver (620); and a body part (100) supporting the circuit board (400).

[0040] The encoder (10) may further include an alignment ring (630) that maintains the gap between the circuit board (400) and the disk (300) between the circuit board (400) and the disk (300). The encoder (10) may further include a cover portion (500) that is coupled to the body portion (100).

[0041] The encoder (10) described in this specification may be an optical and / or magnetic encoder (10), and is not limited to any specific type.

[0042] The rotating device (20) may be a motor and may rotate the rotating shaft (21) to rotate the hub (200) connected to the rotating shaft (21). The types of the rotating device (20) are not limited to those described above. The rotation of the rotating device (20) may specifically refer to the rotation of the rotating shaft (21).

[0043] The hub (200) can be coupled to the rotating device (20). Specifically, the hub (200) can be coupled to the rotation axis (21) of the rotating device (20) and rotate together with the rotation of the rotation axis (21). The hub (200) can be coupled to the disk (300) and rotate the disk (300). The hub (200) can connect the disk (300) and the rotation axis (21) to transmit the rotational force received from the rotation axis (21) to the disk (300). The hub (200) may be provided with a through hole that penetrates the center in a vertical direction.

[0044] The hub (200) may include a flange portion (210) on which a disc (300) is seated, a seating guide portion (220) extending from the flange portion (210) and passing through a through hole of the disc (300) to guide the seating of the disc (300), and a recessed portion (230) extending from the flange portion (210) and formed by being partially recessed in the direction of the central axis. The recessed portion (230) may be formed extending along the circumference of the hub (200). A protrusion (832) is inserted into the recessed portion (230) to allow the locking device (800) to grip the hub (200).

[0045] The disk (300) can be combined with the hub (200) and rotate together with the rotating device (20). The disk (300) can generate a rotation signal by having a pattern. The disk (300) can generate a rotation signal by passing light provided by the transmitting unit (610) through a plurality of slot (or slit) patterns and transmit it to the receiving unit (620). The disk (300) can generate a rotation signal by having a magnetization pattern and transmit it to the receiving unit (620). The disk (300) can have a through hole penetrating the center in a vertical direction.

[0046] The disk (300) can provide rotation data to the receiving unit (620) either by itself or in response to a signal generated from the transmitting unit (610) through a pattern.

[0047] The transmitter (610) can provide a signal toward the disk (300). The transmitter (610) can provide light toward the disk (300), and the disk (300) can transmit a rotation signal corresponding to the pattern to the receiver (620). The transmitter (610) can provide a magnetic field toward the disk (300), and the disk (300) can transmit a rotation signal corresponding to the pattern to the receiver (620). The transmitter (610) can be fixed despite the rotation of the rotating device (20).

[0048] However, in various embodiments, the disk (300) may have a self-magnetizing pattern and transmit a rotation signal corresponding to the pattern to the receiver (620). In this case, the transmitter (610) may be excluded from the encoder (10).

[0049] The receiver (620) can receive a signal corresponding to the pattern of the disk (300). The receiver (620) can generate a digital signal by receiving light corresponding to the pattern of the disk (300). The receiver (620) can generate a digital signal by receiving a magnetic field corresponding to the pattern of the disk (300). The receiver (620) can be provided on the lower part of the circuit board (400). The receiver (620) can be fixed despite the rotation of the rotating device (20).

[0050] The circuit board (400) can process a signal provided by the receiver (620) and can transmit an output signal through a cable (30) connected to a connection terminal (410). The circuit board (400) can perform at least one of amplification, filtering, and digital conversion of the signal provided by the receiver (620). The circuit board (400) may have a receiver (620) at its lower part. The circuit board (400) may be fixed despite the rotation of the rotating device (20). The circuit board (400) may have a through hole penetrating the center in a vertical direction.

[0051] The body part (100) can be fixed to the rotating device (20). The body part (100) can support a circuit board (400). Specifically, the lower part of the body part (100) can be connected to the upper part of the rotating device (20), and can support the circuit board (400) in a vertical direction through the board support part (140) described later, and can support the circuit board (400) in a horizontal direction through the guide part (110) described later. The body part (100) may include a lock support part (130) that supports a lock device (800) inside.

[0052] The body part (100) can be connected to the cover part (500) to form the exterior of the encoder (10). The body part (100) may have an opening (150) on its side, through which a locking device (800) can enter and be fastened together. The body part (100) can be fixed despite the rotation of the rotating device (20). The body part (100) may have a through hole penetrating the center in a vertical direction.

[0053] The alignment ring (630) may be provided between the circuit board (400) and the disk (300). The alignment ring (630) may have a ring portion formed in a circular shape and a plurality of protruding pins protruding from the ring portion in a central direction and an upward direction. The ring portion may have a through hole penetrating the center in a vertical direction. The plurality of protruding pins are provided to be elastically deformable so as to contact the hub (200) to fix the alignment ring (630).

[0054] The alignment ring (630) can separate the circuit board (400) and the disk (300) through protruding pins. The alignment ring (630) can prevent contact between the disk (300) and the circuit board (400) caused by vibrations that may occur when the rotating device (20) rotates, through the elastic deformation of a plurality of protruding pins.

[0055] The locking device (800) can be fastened to the body part (100) through the opening (150) of the body part (100) and can be separated from the body part (100) through the opening (150) of the body part (100). The locking device (800) can be fastened by being supported on the body part (100) and can be temporarily fixed to the body part (100). Here, temporary fixing means that the locking device (800) is fixed in a detachable manner.

[0056] The encoder (10) can be horizontally aligned with the locking device (800) attached to the body part (100). That is, the locking device (800) can horizontally align the disk (300) connected to the hub (200). Horizontal alignment may mean that at least two of the body part (100), the rotation axis (21), the hub (200), the disk (300), and the circuit board (400) are positioned to share the same central axis.

[0057] The encoder (10) can be vertically aligned with the locking device (800) attached to the body part (100). That is, the locking device (800) can vertically align the disk (300) connected to the hub (200). Vertical alignment may mean that at least two of the body part (100), the transmitting part (610), the receiving part (620), the hub (200), the disk (300), and the circuit board (400) are positioned to maintain a predetermined distance from each other.

[0058] The locking device (800) is fastened to the body part (100) and grips the hub (200), thereby allowing the encoder (10) to be vertically and horizontally aligned, enabling the encoder (10) to accurately measure the position and speed of the rotating device (20), and improving the durability of the encoder (10) against vibration, wear, collision, etc.

[0059] Phase alignment can be performed on the encoder (10) while the locking device (800) is separated from the body part (100). Phase alignment may mean that the encoder (10) and the rotating device (20) are positioned so that the phases of the signal of the encoder (10) (e.g., U-phase signal (ES)) and the signal of the rotating device (20) (e.g., R-phase back EMF signal (MS)) match.

[0060] The locking device (800) is fastened to the body part (100) and performs horizontal and vertical alignment by gripping the hub (200), and can then be separated from the body part (100).

[0061] Since the encoder (10) performs phase alignment with the locking device (800) removed from the hub (200), it can be easily aligned regardless of the rotational speed and rotation time of the rotation axis (21) (or hub (200)).

[0062] In contrast, if the encoder (10) performs phase alignment while the locking device (800) is gripping the hub (200), it may have the disadvantage that the locking device (800), hub (200), and rotation shaft (21) are worn out depending on the fast rotation speed or long rotation time of the rotation shaft (21).

[0063] In the encoder (10) according to an embodiment of the present invention, horizontal alignment and vertical alignment are performed while the lock device (800) is gripping the hub (200), and phase alignment is performed while the lock device (800) is detached from the hub (200), thereby allowing all alignments to be easily performed without limitations on the rotation speed and rotation time of the rotating device (20).

[0064] Next, we will examine the structure of the locking device (800).

[0065] FIG. 2(a) is a drawing showing a state in which a locking device (800) is coupled to an encoder (10) according to an embodiment of the present invention. FIG. 2(b) is a drawing showing a state in which the locking device (800) is fastened to a body part (100) in an embodiment of the present invention. FIG. 2(c) is a drawing showing a state in which the locking device (800) grips a hub (200) in an embodiment of the present invention. FIG. 2(d) is a drawing showing the locking device (800) in an embodiment of the present invention.

[0066] Referring to FIGS. 2(a) to FIGS. 2(d), the lock device (800) may include a handle (810) that is gripped by a user or an external device, an extension part (820) that extends from the handle (810) and can enter the body part (100), and a gripping part (830) that extends in two directions from the extension part (820) to form a gripping space between them and grips the hub (200).

[0067] The gripping portion (830) may include a gripping protrusion (831) formed by protruding toward the gripping space. The gripping portion (830) may include a fastening groove (833) formed by being recessed inward. Here, the inward direction may mean a direction toward the through hole or a direction toward the gripping space.

[0068] The gripping portion (830) may be formed in a shape in which at least a portion is open in a circular gripping space. The gripping portion (830) may grip the hub (200) by surrounding it at least 180 degrees, including a gripping protrusion (831). The gripping portion (830) may include a protrusion (832) that protrudes in the direction of the gripping space and enters the recess (230) of the hub (200).

[0069] The locking device (800) can be fastened to the body part (100) and fixed in the vertical and horizontal directions. The protrusion (832) of the locking device (800) can be inserted into the recess (230) of the hub (200) to fix the hub (200) in the vertical and horizontal directions. Thus, the encoder (10) can be vertically aligned and horizontally aligned.

[0070] The locking device (800) can horizontally align the encoder (10) by gripping the hub (200) through the gripping space so that it aligns with the center axis of the hub (200), body part (100), rotation axis (21), disk (300), and circuit board (400). The gripping part (830) can vertically align the encoder (10) by gripping the hub (200) through the protrusion (832) so that the hub (200), body part (100), transmitter part (610), receiver part (620), disk (300), and circuit board (400) maintain a predetermined distance from each other. The locking device (800) can be temporarily fixed to the body part (100) by contacting the support projection (131) of the locking support part (130) through the fastening groove (833).

[0071] When the locking device (800) enters the interior of the body part (100) through the opening (150), the gripping space widens due to the elastic deformation of the gripping part (830), and the protrusion (832) is inserted into the recess (230) to grip the hub (200).

[0072] When the locking device (800) enters the interior of the body part (100) through the opening (150), the gripping part (830) narrows due to elastic deformation, and the support projection (131) is inserted into the fastening groove (833) and can be temporarily fixed to the body part (100). At this time, the gripping part (830) can grip the hub (200) by surrounding it within a range greater than 180 degrees and less than 360 degrees.

[0073] Next, we will examine the encoder alignment method according to an embodiment of the present invention (hereinafter referred to as the 'encoder alignment method').

[0074] FIG. 3 is a diagram showing the sequence of an encoder alignment method according to an embodiment of the present invention. FIG. 4 is a diagram showing the state in which an encoder (10) is positioned on a rotating device (20) in an embodiment of the present invention. FIG. 5 is a diagram showing the state in which a hub (200) is fixed to a rotating shaft (21) in an embodiment of the present invention. FIG. 6 is a diagram showing the state in which a body part (100) is fixed to a rotating device (20) in an embodiment of the present invention. FIG. 7 is a diagram showing the state in which a locking device (800) is separated from a body part (100) in an embodiment of the present invention. FIG. 8 (a) is a diagram showing the state in which phase alignment is performed in an embodiment of the present invention. FIG. 8 (b) is a diagram showing the signal in which phase alignment is completed in an embodiment of the present invention. FIG. 9 is a diagram showing the state in which a cover part (500) is coupled to a body part (100) in an embodiment of the present invention.

[0075] Referring to FIG. 3, the encoder alignment method may include: a positioning step (S100) in which an encoder (10) is positioned on a rotating device (20) with a locking device (800) engaged, wherein the encoder (10) is equipped with a disk (300) that rotates together with a rotating device (20), a receiving unit (620) that receives a signal corresponding to a pattern of the disk (300), a circuit board (400) equipped with the receiving unit (620), and a body unit (100) that supports the circuit board (400); and a phase alignment step (S200) in which the circuit board (400) is rotated with the locking device (800) disengaged to match the phase of the U-phase signal (ES) of the encoder (10) and the R-phase back EMF signal (MS) of the rotating device (20); and may further include a fixing step (S300) in which a cover unit (500) is coupled to the body unit (100) to fix the circuit board (400).

[0076] First, a positioning step (S100) can be performed.

[0077] The positioning step (S100) may include the step of coupling the hub (200) to the rotation axis (21) of the rotating device (20), the step of fixing the body part (100) to the rotating device (20), and the step of separating the locking device (800) from the body part (100).

[0078] As described above, the encoder (10) may include a disk (300), a receiver (620), a circuit board (400), a body (100), and a cover (500), and a locking device (800) may be fastened and unfastened.

[0079] Referring to FIGS. 4 and 5, the encoder (10) can be positioned on the rotating device (20) while the locking device (800) is engaged. The rotation axis (21) of the rotating device (20) can pass through the through hole of the hub (200).

[0080] The hub (200) can be fixed to the rotation axis (21) by means of a coupling means. The coupling means may be at least one means such as a bolt and nut, a set screw, a key and keyway, a spline, a pin, a tapered joint, a clamp hub (200), a friction ring, an adhesive, and welding, but is not limited thereto. The rotation axis (21) of the rotating device (20) can be coupled to the hub (200) through the coupling means to rotate the hub (200).

[0081] Referring to FIG. 6, the encoder (10) or body part (100) can be fixed to the rotating device (20) by a fixing means. The fixing means may be at least one of a bolt and nut, a clamp-type fixing, a bracket and flange, an adhesive, and welding, but is not limited thereto.

[0082] The body portion (100) may include at least one fixing hole (120) at at least one predetermined point on the edge. A bolt may be coupled to the fixing hole (120) so that the body portion (100) can be fixed to the rotating device (20). The radius of the fixing hole (120) of the body portion (100) may be formed to match or be equal to the outer diameter of the bolt so that the body portion (100) can be fixed so that vertical movement, horizontal movement, and rotational movement are suppressed.

[0083] The body part (100) can be fixed to the rotating device (20) while the locking device (800) is engaged. Since the body part (100) is fixed to the rotating device (20) while the locking device (800) is engaged and movement is suppressed, the encoder (10) can perform complete horizontal alignment and vertical alignment. In addition, since the body part (100) is fixed to the rotating device (20) and rotational movement is suppressed, it can be fixed to the rotating device (20) even during the phase alignment process in which the circuit board (400) rotates.

[0084] Referring to FIG. 7, the lock device (800) can be separated from the encoder (10) or the body part (100). When the lock device (800) moves to the outside of the body part (100) through the opening (150), the gripping space widens due to the elastic deformation of the gripping part (830), and the protrusion (832) is detached from the recess (230), so that the lock device (800) can remove the hub (200).

[0085] When the locking device (800) moves to the outside of the body part (100) through the opening (150), the gripping part (830) narrows due to elastic deformation, and the support projection (131) is disengaged from the fastening groove (833), so that the locking device (800) can be temporarily released.

[0086] After the horizontal alignment and vertical alignment of the encoder (10) are completed, the locking device (800) is separated from the encoder (10) or the body part (100), and the locking device (800) removes the hub (200), thereby allowing phase alignment to be performed freely without the horizontal alignment and vertical alignment being disrupted.

[0087] Next, a phase alignment step (S200) can be performed.

[0088] Referring to FIG. 8(a) and FIG. 8(b), phase alignment can be performed on the encoder (10) with the locking device (800) disengaged. With the locking device (800) disengaged, the circuit board (400) can be rotated to match the phase of the signal of the encoder (10) and the signal of the rotating device (20).

[0089] The encoder (10) or circuit board (400) can be connected to the cable (30) through the connection terminal (410) to provide the signal of the encoder (10) and the back EMF signal of the rotating device (20) to a measuring device (not shown). The measuring device may be at least one of an oscilloscope, a logic analyzer, an FFT analyzer, a signal generator, and a decoder.

[0090] The signal of the encoder (10) may be at least one of the U-phase signal (ES), V-phase signal, and W-phase signal. The signal of the encoder (10) may be a digital pulse or an analog signal. The signal of the encoder (10) may be a signal generated based on the pattern of the disk (300).

[0091] The signal of the rotating device (20) may be at least one of an R-phase back EMF signal (MS), an S-phase back EMF signal, and a T-phase back EMF signal. The signal of the rotating device (20) may be an analog signal. The signal of the rotating device (20) may be an electrical signal induced by the rotation of the rotating device (20).

[0092] By completing phase alignment so that the phases of the signal of the encoder (10) and the signal of the rotating device (20) match, the encoder (10) can be controlled so that the physical (mechanical) position of the rotating device (20) and the electrical position of the rotating device (20) have the same reference point.

[0093] When the locking device (800) is separated from the encoder (10) or the body part (100) (the locking device (800) is removed from the hub (200)), the circuit board (400) is rotated, thereby allowing phase alignment to be performed freely from the rotation speed and rotation time of the rotating device (20).

[0094] Next, a fixing step (S300) can be performed.

[0095] The fixing step (S300) may include a first pressing step in which the push part (510) of the cover part (500) presses the guide part (110) of the body part (100) in a horizontal direction, and a second pressing step in which the guide part (110) presses the circuit board (400) in a horizontal direction.

[0096] Referring to FIGS. 9, FIGS. 10 (a) and FIGS. 10 (b), the body portion (100) can be combined with the cover portion (500) to fix the circuit board (400). The body portion (100) can support the circuit board (400) in a vertical direction when the cover portion (500) is separated, and can support the circuit board (400) in a horizontal direction when the cover portion (500) is combined. Additionally, the body portion (100) can support the circuit board (400) in a vertical direction when the cover portion (500) is combined.

[0097] The body portion (100) may include a guide portion (110) that is formed to protrude vertically from the body of the body portion (100) and is spaced horizontally from the circuit board (400), and a substrate support portion (140) that supports the circuit board (400) in a vertical direction. The guide portion (100) may be provided in multiple numbers spaced apart from each other along the circumference of the body portion (100), or may be provided in a single number extending along the circumference of the body portion (100).

[0098] The cover portion (500) may include a push portion (510) formed to protrude horizontally from the inner side of the cover portion (500). The push portion (510) may be provided in multiple numbers spaced apart from each other along the perimeter of the cover portion (500), or provided in a single number extending along the perimeter of the cover portion (500).

[0099] In the process of combining the cover part (500) and the body part (100), when the push part (510) pushes the guide part (110) in a horizontal direction, the guide part (110) comes into contact with the circuit board (400) and can fix the circuit board (400).

[0100] The guide portion (110) may be spaced horizontally apart from the circuit board (400) to provide a space for the circuit board (400) to rotate. The inner side of the guide portion (110) may be formed in a vertical direction.

[0101] The guide section (110) may include an inclined guide section (111) that is inclined outward as it moves in a vertical direction (downward direction) on the outer side. That is, the inclined guide section (111) may be formed so that its cross-sectional area widens as it moves in a vertical direction (downward direction). However, the inclined guide section (111) may be implemented in a rounded shape, unlike (a) of FIG. 10.

[0102] The push portion (510) may include an inclined push portion (511) that is inclined outward while moving in a vertical direction (downward direction) on the inner side. That is, the inclined push portion (511) may be formed so that its cross-sectional area widens as it moves in a vertical direction (downward direction).

[0103] Referring to FIG. 10 (a), in the first pressing step, the cover portion (500) approaches the body portion (100), and the push portion (510) of the cover portion (500) can press the guide portion (110) in a horizontal direction while contacting the guide portion (110) of the body portion (100).

[0104] Specifically, the inclined push portion (511) can press the inclined guide portion (111) in a horizontal direction while in contact with the inclined guide portion (111). The contact structure between the inclined push portion (511) and the inclined guide portion (111) can prevent wear of the body portion (100) and / or cover portion (500).

[0105] Referring to FIG. 10(b), in the second pressing step, the cover portion (500) approaches the body portion (100) further, and the guide portion (110) can press the circuit board (400) in a horizontal direction while in contact with the circuit board (400). Specifically, the inner side of the guide portion (110) can press the circuit board (400) while in contact with the edge of the circuit board (400).

[0106] The encoder (10) and encoder alignment method according to an embodiment of the present invention have the effect of facilitating phase alignment by fixing to the rotating device (20) and separating the locking device (800) when horizontal alignment and vertical alignment are completed.

[0107] The encoder (10) and encoder alignment method according to an embodiment of the present invention have the effect of facilitating phase alignment by providing a space in which the rotating board can rotate while the guide part (110) is spaced apart from the circuit board (400).

[0108] The encoder (10) and encoder alignment method according to an embodiment of the present invention can solve the inconvenience of requiring the user to perform alignment again by shipping the encoder (10) combined up to the cover part (500) in a state where horizontal alignment, vertical alignment, and phase alignment are completed.

[0109] As described above, although the present invention has been explained with reference to preferred embodiments, a person skilled in the art may implement the present invention with various modifications or variations without departing from the spirit and scope of the invention as described in the following claims.

Claims

1. In an encoder in which alignment is performed through the engagement and disengagement of a locking device, A hub coupled to a rotating device; A disk that rotates together with the rotating device in combination with the hub; A receiver that receives a signal corresponding to the pattern of the above disk; A circuit board equipped with the above-mentioned receiving unit; and It includes a body portion that supports the above circuit board, and An encoder in which horizontal alignment and vertical alignment are performed while the locking device is fastened to the body part, and phase alignment is performed while the locking device is separated from the body part.

2. In Paragraph 1, The above locking device is fastened to the body part and fixed in the vertical and horizontal directions, and An encoder in which the protrusion of the above locking device is inserted into the recess of the above hub to fix the above hub in a vertical and horizontal direction.

3. In Paragraph 1, It further includes a cover portion coupled to the above body portion; and The above body part is, An encoder that supports the circuit board in a vertical direction when the cover part is separated, and supports the circuit board in a horizontal direction when the cover part is combined.

4. In Paragraph 3, The above body part is, It includes a guide portion that is formed to protrude vertically from the body of the above-mentioned body portion and is spaced horizontally from the circuit board, and The above cover part is, It includes a push portion formed to protrude horizontally from the inner side of the above-mentioned cover portion, and An encoder that fixes the circuit board by the guide part contacting the circuit board when the push part pushes the guide part in a horizontal direction.

5. In an encoder alignment method for aligning encoders, A positioning step of positioning the encoder, which is provided with a disk rotating together with a rotating device, a receiver receiving a signal corresponding to a pattern of the disk, a circuit board on which the receiver is provided, and a body supporting the circuit board, on the rotating device while the locking device is engaged; and An encoder alignment method comprising: a phase alignment step of rotating the circuit board while the locking device is separated to match the phase of the U-phase signal of the encoder and the R-phase back EMF signal of the rotating device.

6. In Paragraph 5, The above position step is, An encoder alignment method comprising the steps of: coupling a hub to the rotation axis of the rotating device; fixing the body part to the rotating device; and separating the locking device from the body part.

7. In Paragraph 5, An encoder alignment method further comprising a fixing step of fixing the circuit board by attaching a cover part to the body part.

8. In Paragraph 7, The above fixing step is, An encoder alignment method comprising: a first pressing step in which a push portion of the cover portion presses a guide portion of the body portion in a horizontal direction; and a second pressing step in which the guide portion presses a circuit board in a horizontal direction.

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