Brake device with integrated encoder

Abstract

The utility model relates to a kind of brake device of integrated encoder, sensor element is equipped on rotor, inductive element is equipped on encoder shell, inductive element is used to induct the position information of the sensor element, so it can monitor the position information of rotating shaft without additional installation encoder and other position monitoring device, this integrated mode makes that installation space is greatly reduced, motor structure is compact, and the length of rotating shaft is also smaller, the shaft jump of rotating shaft tail end is small, easy to process and manufacture, the rotation stability of brake is better.Moreover, the rotating shaft of brake device does not need to pass through encoder shell again, encoder does not need to be through shaft type, so the adaptation surface of encoder can be relatively wide, and the shell protection class of encoder is also higher.

Description

Technical Field

[0001] This utility model relates to a braking device with an integrated encoder, belonging to the field of industrial control technology. Background Technology

[0002] In the field of industrial control, as products and equipment demand increasingly precise control and improved efficiency at the motor level, brakes and encoders are being added to more and more motor applications to meet market demands. Traditionally, brakes and encoders are two separate components. This assembly method presents several problems:

[0003] 1) The two independent components and the cavity occupy a large amount of the motor's axial space, which goes against the current trend of motor miniaturization and integration;

[0004] 2) The presence of two independent components results in a long motor shaft extension, large shaft runout at the motor tail end, high processing difficulty, and a significant impact on the rotational stability of the brake (typically the distance between the brake rotor and stator is ≤0.03mm, and a large shaft runout can cause rotor wobble and pose a risk of scraping). Utility Model Content

[0005] In view of the shortcomings of the prior art described above, the technical problem to be solved by this utility model is to provide a braking device with an integrated encoder, which can highly integrate the braking device and the encoder, has a compact structure, and saves installation space.

[0006] To achieve the above objectives, this utility model provides a braking device for an integrated encoder. The braking device has a fixed base and a rotor. The rotor is used to connect to a rotating shaft. The fixed base has a braking mechanism for braking the rotor. An encoder housing is connected to the fixed base. A sensing element is provided on the rotor. A sensing element is provided on the encoder housing. The sensing element is used to sense the position information of the sensing element.

[0007] Preferably, the sensing element and the induction element are respectively configured as the rotor and stator of the encoder.

[0008] Preferably, the sensing element is a reflective grating disk, and the sensing element is a reflective photoelectric sensor.

[0009] Preferably, the mounting base is provided with a light source, the sensing element is a transmissive grating disk, and the sensing element is a photoelectric sensor.

[0010] Preferably, the sensing element is a magnetic code disk, and the sensing element is a Hall element.

[0011] Preferably, the end face of the magnetic code disk is the effective face, and the Hall element faces the end face of the magnetic code disk.

[0012] Preferably, the circumferential side surface of the magnetic code disk is the effective surface, and the Hall element faces the side surface of the magnetic code disk.

[0013] Preferably, the sensing element is an excitation coil encoder disk, and the sensing element is an induction coil.

[0014] Preferably, the sensing element is a capacitive code disk with a sinusoidal conductive pattern etched on its surface, the mounting base is provided with a transmitter for generating a high-frequency reference signal, and the sensing element is a receiver for receiving the transmitter signal. The transmitter and receiver are respectively disposed on both sides of the capacitive code disk and form capacitive coupling.

[0015] Preferably, the encoder housing houses the rotor, sensing element, and induction element within its cavity.

[0016] As described above, the braking device of the integrated encoder of this utility model has the following beneficial effects: The braking device of the integrated encoder of this utility model has a sensing element on the rotor and a sensing element on the encoder housing. The sensing element is used to sense the position information of the sensing element. In this way, the position information of the rotating shaft can be monitored without the need to install an additional position monitoring device such as an encoder. This integration method greatly reduces the installation space, makes the motor structure compact, and the length of the rotating shaft is also small. The shaft runout at the tail end of the rotating shaft is small, which makes it easy to process and manufacture, and the rotational stability of the brake is good. Attached Figure Description

[0017] Figure 1 The diagram shown is a three-dimensional structural schematic of a braking device with an integrated encoder according to this utility model.

[0018] Figure 2 The image shown is an exploded view of a braking device with an integrated encoder according to this utility model.

[0019] Figure 3 It is shown as an integrated form of a reflective photoelectric encoder.

[0020] Figure 4 It is shown as an integrated form of a transmissive photoelectric encoder.

[0021] Figure 5 This is shown as an integrated form of a magneto-electric encoder.

[0022] Figure 6 This is shown as another integrated form of a magneto-electric encoder.

[0023] Figure 7 It is shown as an integrated form of an inductive encoder.

[0024] Figure 8 It is displayed as an integrated form of a capacitive encoder.

[0025] Component designation explanation

[0026] 1. Fixture

[0027] 2 rotors

[0028] 3. Encoder housing

[0029] 4. Sensing elements

[0030] 5. Reflective grating disk

[0031] 6. Reflective photoelectric sensor

[0032] 7 Transmission grating disk

[0033] 8. Photoelectric sensor

[0034] 9. Light source

[0035] 10-1 Magnetic Code Disk

[0036] 11-1 Hall element

[0037] 10-2 Magnetic Code Disc

[0038] 11-2 Hall element

[0039] 12 Excitation Coil Encoder

[0040] 13 Induction coil

[0041] 14 Capacitive encoder disk

[0042] 15 transmitters

[0043] 16 receivers

[0044] 17 Mounting screws Detailed Implementation

[0045] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0046] It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this utility model, should still fall within the scope of the technical content disclosed in this utility model. Furthermore, the terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of implementation of this utility model.

[0047] like Figure 1 and Figure 2 As shown, this utility model provides a braking device for an integrated encoder. The braking device has a fixed base 1 and a rotor 2. The rotor 2 is used to connect to a rotating shaft. The fixed base 1 has a braking mechanism for braking the rotor 2. An encoder housing 3 is connected to the fixed base 1. A sensing element 4 is provided on the rotor 2. A sensing element is provided on the encoder housing 3 (the sensing element is located inside the encoder housing 3). Figure 2 (Not shown in the image), the sensing element is used to sense the position information of the sensing element 4.

[0048] The braking device of the integrated encoder of this utility model has a sensing element 4 on the rotor 2 and a sensing element on the encoder housing 3. The sensing element is used to sense the position information of the sensing element 4. In this way, the position information of the rotating shaft can be monitored without the need to install an additional encoder or other position monitoring device. This integration method greatly reduces the installation space, makes the motor structure compact, and also reduces the length of the rotating shaft. The shaft runout at the tail end of the rotating shaft is small, making it easy to process and manufacture, and the rotational stability of the brake is good.

[0049] When the brake device of the integrated encoder of this utility model is connected to the rotating shaft, the rotating shaft passes through the fixed base 1 and is connected to the rotor 2. The fixed base 1 is fixedly connected to the housing of rotating equipment such as motor. Since the sensing element 4 and the sensing element are respectively configured as the rotor and stator of the encoder, the rotating shaft does not need to pass through the encoder housing 3, and the encoder does not need to be a through-shaft type (i.e., the motor tail shaft passes through the entire encoder). In this way, the encoder can have a wider range of applications and the encoder housing protection level is also higher.

[0050] like Figure 1 and Figure 2 As shown, the encoder housing 3 houses the rotor 2, sensing element 4, and induction element within its cavity, providing excellent protection.

[0051] In a braking device of an integrated encoder according to the present invention, the sensing element 4 and the induction element are respectively configured as the rotor and stator of the encoder. There are various specific implementation methods, and the following are examples of possible implementation methods.

[0052] like Figure 3 As shown, in the first embodiment, the sensing element 4 is a reflective grating disk 5, and the sensing element is a reflective photoelectric sensor 6. Thus, the reflective photoelectric sensor 6 has its own light source, and the light emitted shines onto the reflective grating disk 5 and is reflected back to the reflective photoelectric sensor 6. This structure is more compact and can save installation space to the greatest extent.

[0053] like Figure 4 As shown, in the second embodiment, the mounting base 1 is equipped with a light source 9, the sensing element 4 is a transmissive grating disk 7, and the sensing element is a photoelectric sensor 8. This embodiment can also integrate the encoder function into the braking device, saving installation space.

[0054] A magnetoelectric encoder can be integrated with the braking device, where the sensing element 4 is a magnetic code disk and the sensing element is a Hall element. As a third embodiment, the integration of the magnetoelectric encoder with the braking device can be as follows: Figure 5 As shown, the end face of the magnetic code disk 10-1 is the effective face, and the Hall element 11-1 faces the end face of the magnetic code disk 10-1.

[0055] As a fourth implementation method, the integration of the magnetoelectric encoder and the braking device can also be as follows: Figure 6 As shown, the circumferential side surface of the magnetic code disk 10-2 is the effective surface, and the Hall element 11-2 faces the side surface of the magnetic code disk 10-2. Figure 6 The integration method shown is compared to Figure 5 This can further save installation space.

[0056] For magneto-electric encoders, more specifically, the magnetic code disk is typically composed of permanent magnets, magnetized either radially or axially. For example, a 128-pole magnetic ring corresponds to 64 alternating N and S poles, forming finely segmented position data. Hall elements can be divided into sensors that detect transverse (By) and longitudinal (Bx) magnetic fields, arranged orthogonally to eliminate axial eccentricity errors. For example, in a Shaft-End configuration, the Hall element is coaxially mounted with the permanent magnet to reduce errors.

[0057] As a fifth implementation method, it can be as follows: Figure 7 As shown, the sensing element 4 is an excitation coil encoder 12, and the sensing element is an induction coil 13.

[0058] As a sixth implementation method, such as Figure 8As shown, the sensing element 4 is a capacitive code disk with a sinusoidal conductive pattern etched on its surface. The mounting base 1 is equipped with a transmitter 15 for generating a high-frequency reference signal. The sensing element is a receiver 16 for receiving the signal from the transmitter 15. The transmitter 15 and receiver 16 are respectively disposed on opposite sides of the capacitive code disk and form capacitive coupling. The transmitter 15 is mounted on the mounting base 1, and the receiver 16 is mounted on the encoder housing 3. The sinusoidal pattern etched on the capacitive code disk, together with the fixedly mounted transmitter 15 and receiver 16, constitutes a variable capacitor. When the rotor 2 rotates, the capacitance value between the capacitive code disk and the fixed electrodes formed by the transmitter 15 and receiver 16 changes, generating a modulation signal.

[0059] Based on the technical solution of the above embodiments, the braking device of the integrated encoder of this utility model has a sensing element 4 on the rotor 2 and a sensing element on the encoder housing 3. The sensing element is used to sense the position information of the sensing element 4. In this way, the position information of the rotating shaft can be monitored without the need to install an additional encoder or other position monitoring device. This integration method greatly reduces the installation space, makes the motor structure compact, and also reduces the length of the rotating shaft, resulting in less shaft runout at the tail end of the rotating shaft, making it easier to manufacture and improve the rotational stability of the brake. Moreover, the rotating shaft of the braking device does not need to pass through the encoder housing 3, and the encoder does not need to be a through-shaft type (i.e., the motor tail shaft passes through the entire encoder). This allows for a wider range of encoder compatibility and a higher protection level for the encoder housing.

[0060] In summary, the braking device of the integrated encoder of this utility model can be widely used in the operation control of rotating shafts of motor-driven rotating equipment, effectively overcoming the various shortcomings of the prior art and having high industrial application value.

[0061] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A braking device for an integrated encoder, the braking device having a fixed base and a rotor, the rotor being connected to a rotating shaft, and the fixed base having a braking mechanism for braking the rotor, characterized in that, An encoder housing is connected to the fixed base, a sensing element is provided on the rotor, and a sensing element is provided on the encoder housing. The sensing element is used to sense the position information of the sensing element.

2. The braking device with an integrated encoder according to claim 1, characterized in that: The sensing element and the induction element are respectively configured as the rotor and stator of the encoder.

3. The braking device of the integrated encoder according to claim 1, characterized in that: The sensing element is a reflective grating disk, and the sensing element is a reflective photoelectric sensor.

4. The braking device of the integrated encoder according to claim 1, characterized in that: The mounting base is equipped with a light source, the sensing element is a transmissive grating disk, and the sensing element is a photoelectric sensor.

5. The braking device of the integrated encoder according to claim 1, characterized in that: The sensing element is a magnetic code disk, and the sensing element is a Hall element.

6. The braking device of the integrated encoder according to claim 5, characterized in that: The end face of the magnetic code disk is the effective face, and the Hall element faces the end face of the magnetic code disk.

7. The braking device with an integrated encoder according to claim 5, characterized in that: The circumferential side of the magnetic code disk is the effective surface, and the Hall element faces the side of the magnetic code disk.

8. The braking device of the integrated encoder according to claim 1, characterized in that: The sensing element is an excitation coil encoder disk, and the sensing element is an induction coil.

9. The braking device of the integrated encoder according to claim 1, characterized in that: The sensing element is a capacitive code disk with a sinusoidal conductive pattern etched on its surface. The mounting base is equipped with a transmitter for generating a high-frequency reference signal. The sensing element is a receiver for receiving the transmitter signal. The transmitter and receiver are respectively disposed on both sides of the capacitive code disk and form capacitive coupling.

10. The braking device of the integrated encoder according to claim 1, characterized in that: The encoder housing encloses the rotor, sensing element, and induction element within its cavity.

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