Miniature encoder mounting structure

Abstract

The utility model discloses a miniature encoder mounting structure which is provided with an encoder and a stepping motor. The encoder is installed on the stepping motor, the encoder and the stepping motor are integrally formed, the exterior of the encoder is divided into an encoder shell and a rear cover 3, and a magnetic steel sleeve in butt joint with a rotating shaft of the stepping motor is arranged in the encoder. The encoder is installed on the stepping motor and can operate stably, and no abnormal sound or pungent smell is generated in the working process; the two ends of the magnetic steel sleeve are provided with two parallel D-shaped planes. The housing and the rear cover of the encoder are made of nylon PA6 + 20% GF, and the temperature resistance range of the material is-40 DEG C to 150 DEG C. Damage such as cracking and deformation cannot be caused in a high-temperature test in the temperature interval. The encoder is installed on the 14 # stepping motor and can operate stably, and no abnormal sound or pungent smell is generated in the working process. PCB materials meet the environmental protection requirements of ROHS, REACH and the like; the two D-shaped planes in the magnetic steel sleeve are parallel, and the material meets the environmental protection requirements of ROHS and REACH.

Description

Technical Field

[0001] The utility model relates to the field of encoder installation, in particular to a micro encoder installation structure. Background Art

[0002] As we all know, an encoder is a device that compiles and converts signals (such as bit streams) or data into a signal form that can be used for communication, transmission and storage. The encoder converts angular displacement or linear displacement into an electrical signal. The former is called a code disk and the latter is called a code ruler. According to the readout method, encoders can be divided into contact and non-contact types; according to the working principle, encoders can be divided into incremental and absolute types. The incremental encoder converts the displacement into a periodic electrical signal, and then converts this electrical signal into a counting pulse, and the number of pulses is used to represent the size of the displacement. Each position of the absolute encoder corresponds to a certain digital code, so its indication is only related to the starting and ending positions of the measurement, but not to the intermediate process of the measurement. After analysis, it is believed that the encoders currently on the market are relatively large. The smaller the encoder, the more difficult it is to produce and install, and it is even more difficult to ensure a certain accuracy. Based on this situation, the 14MM micro encoder developed by this application just solves these problems. At the same time, after searching, no encoder with this structure was found. Utility Model Content

[0003] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a micro encoder installation structure, in which the encoder housing and back cover are made of nylon PA6 + 20% GF, and the material temperature resistance range is -40℃ to 150℃. In this temperature range, the high temperature test cannot cause cracking, deformation and other damage. The encoder can run smoothly when installed on the 14# stepper motor, and no abnormal sound or pungent odor is generated during operation. The PCB board material meets the environmental protection requirements such as ROHS and REACH; the two D-shaped planes in the magnetic steel sleeve must be parallel, and the material meets the environmental protection requirements of ROHS and REACH.

[0004] The utility model is implemented in this way, constructing a micro encoder installation structure, characterized in that: it has two parts, namely, an encoder and a stepper motor; the encoder is installed on the stepper motor and the two are integrally formed, the outer size of the encoder is 14×14×13mm, the outer part is divided into an encoder housing and a back cover, the interior of the encoder has a magnetic steel sleeve docking with the stepper motor shaft; the encoder is installed on the stepper motor and can run smoothly, and no abnormal sound or pungent odor is generated during operation; the two ends of the magnetic steel sleeve have two parallel D-shaped planes.

[0005] Furthermore, the stepper motor is a 14# stepper motor.

[0006] Furthermore, the motor shaft φ4 of the stepping motor extends to a length of 5±0.8mm.

[0007] Furthermore, the encoder housing and back cover are made of nylon PA6 + 20% GF; the material has a temperature resistance range of -40°C to 150°C; in this temperature range, the high temperature test should not cause cracking, deformation or other damage.

[0008] Furthermore, the back cover is fixed to the end of the encoder housing, and the interior of the encoder also has a PCB board, which is fixed to the inner side of the back cover.

[0009] Furthermore, the PCB material complies with environmental protection requirements such as ROHS and REACH.

[0010] Furthermore, the magnetic steel sleeve material complies with the environmental protection requirements of ROHS and REACH.

[0011] This application has the following improvements and advantages:

[0012] (1) The motor shaft φ4 extends 5±0.8mm, and the encoder size is 14×14×13mm. The encoder housing and back cover are made of nylon PA6+20% GF, and the material temperature resistance range is -25℃ to 105℃. In this temperature range, the high temperature test should not cause cracking, deformation, and other damage. The encoder has a black fine sand grain color, and there are no scratches, cracks, bulges, and other defects on the surface. The encoder can run smoothly when installed on a 14# stepper motor, and there is no abnormal sound or pungent smell during operation.

[0013] (2) The advantages and beneficial effects of this patent are: it is integrally formed with the motor, beautiful and practical; it can be installed in a miniature structure, suitable for installation in a smaller environment, and has a wider range of applications; its unique structural design can make the IP level of the encoder meet military grade requirements; and the material selection design has a wide temperature range, which can be -40 to 125°.

[0014] (3) The encoder housing and back cover are made of nylon PA6 + 20% GF, and the material has a temperature resistance range of -40℃ to 150℃. In this temperature range, the high temperature test should not cause cracking, deformation, and other damage. The encoder can run smoothly when installed on a 14# stepper motor, and no abnormal sound or pungent odor is generated during operation.

[0015] (4) For PCB boards: the substrate must be free of cracks and deformation, and the components must be free of solder joints, cold solder joints, or missing components. The Hall element must be in the same position without displacement or deviation, and the material must comply with environmental protection requirements such as ROHS and REACH.

[0016] (5) For magnetic steel sleeves: the product needs heat treatment; the two D-shaped planes must be parallel; the surface must not have defects such as cracks, sand holes, shrinkage holes, inclusions, corner detachment and obvious knife marks that affect use; the material meets the environmental protection requirements of ROHS and REACH. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the internal and external structure diagram of this application;

[0018] Figure 2 It is the external structure diagram of this application;

[0019] Figure 3-Figure 4 It is the PCB board structure diagram;

[0020] Figure 5-Figure 6 is the corresponding schematic diagram of magnetic steel;

[0021] Figure 7-Figure 9 It is a schematic diagram of a magnetic steel sleeve;

[0022] Figure 10-15 It is a schematic diagram of the back cover;

[0023] Figure 16-Figure 21 This is a schematic diagram of the housing. DETAILED DESCRIPTION

[0024] The following will be combined with the attached Figure 1-Figure 21 The utility model is described in detail, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The utility model provides a micro encoder installation structure, such as Figure 1-Figure 21 As shown, the specific implementation is as follows; it has two parts, an encoder and a stepper motor 1; the encoder is installed on the stepper motor and the two are integrally formed, the external dimensions of the encoder are 14×14×13mm, the outside is divided into an encoder housing 2 and a back cover 3, the inside of the encoder has a magnetic steel sleeve 4 that is connected to the shaft of the stepper motor 1; the encoder is installed on the stepper motor 1 and can run smoothly, and no abnormal sound or pungent smell is generated during operation; the two ends of the magnetic steel sleeve 4 have two parallel D-shaped planes.

[0026] In the present application, the stepper motor 1 is a 14# stepper motor.

[0027] In the present application, the motor shaft φ4 of the stepper motor 1 extends out by a length of 5±0.8 mm.

[0028] In this application, the encoder housing and back cover are made of nylon PA6 + 20% GF. The material temperature range is -40°C to 150°C. In this temperature range, the high temperature test should not cause cracking, deformation, or other damage.

[0029] In the present application, the back cover 3 is fixed to the end of the encoder housing, and the encoder further has a PCB board 5 inside, and the PCB board 5 is fixed to the inner side of the back cover 3 .

[0030] In this application, the material of the PCB board 5 complies with environmental protection requirements such as ROHS and REACH.

[0031] In this application, the magnetic steel sleeve material complies with the environmental protection requirements of ROHS and REACH.

[0032] This application has the following improvements and advantages:

[0033] (1) The motor shaft φ4 extends 5±0.8mm, and the encoder size is 14×14×13mm. The encoder housing and back cover are made of nylon PA6+20% GF, and the material temperature resistance range is -25℃ to 105℃. In this temperature range, the high temperature test should not cause cracking, deformation, and other damage. The encoder has a black fine sand grain color, and there are no scratches, cracks, bulges, and other defects on the surface. The encoder can run smoothly when installed on a 14# stepper motor, and there is no abnormal sound or pungent smell during operation.

[0034] (2) The advantages and beneficial effects of this patent are: it is integrally formed with the motor, beautiful and practical; it can be installed in a miniature structure, suitable for installation in a smaller environment, and has a wider range of applications; its unique structural design can make the IP level of the encoder meet military grade requirements; and the material selection design has a wide temperature range, which can be -40 to 125°.

[0035] (3) The encoder housing and back cover are made of nylon PA6 + 20% GF, and the material has a temperature resistance range of -40℃ to 150℃. In this temperature range, the high temperature test should not cause cracking, deformation, and other damage. The encoder can run smoothly when installed on a 14# stepper motor, and no abnormal sound or pungent odor is generated during operation.

[0036] (4) For PCB boards: the substrate must be free of cracks and deformation, and the components must be free of solder joints, cold solder joints, or missing components. The Hall element must be in the same position without displacement or deviation, and the material must comply with environmental protection requirements such as ROHS and REACH.

[0037] (5) For magnetic steel sleeves: the product needs heat treatment; the two D-shaped planes must be parallel; the surface must not have defects such as cracks, sand holes, shrinkage holes, inclusions, corner detachment and obvious knife marks that affect use; the material meets the environmental protection requirements of ROHS and REACH.

[0038] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A micro encoder installation structure, characterized in that; It consists of two parts: an encoder and a stepper motor. The encoder is installed on the stepper motor and the two are formed in one piece. The outside is divided into an encoder housing and a back cover. The inside of the encoder has a magnetic steel sleeve that is connected to the shaft of the stepper motor. The encoder can run smoothly when installed on the stepper motor, and no abnormal sound or pungent smell is generated during operation. Both ends of the magnetic steel sleeve have two parallel D-shaped planes.

2. According to claim 1, a micro encoder installation structure is characterized in that ; The stepper motor is 14# stepper motor.

3. A micro encoder installation structure according to claim 1, characterized in that: The motor shaft φ4 of the stepper motor has a protruding length of 5±0.8 mm.

4. The micro encoder installation structure according to claim 1, characterized in that: The encoder housing and back cover are made of nylon PA6 + 20% GF; the material temperature resistance range is -40℃ to 150℃.

5. The micro encoder installation structure according to claim 1, characterized in that: The rear cover is fixed to the end of the encoder housing. The encoder is also provided with a PCB board inside, and the PCB board is fixed to the inner side of the rear cover.

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