CN215810900U - Magnetic multi-turn absolute value encoder - Google Patents

Abstract

The utility model discloses a magnetic multi-turn absolute value encoder, which comprises: the encoder seat and the measuring spindle; the main shaft gear is fixedly connected with the measuring main shaft; the protective shell is detachably connected with the encoder seat; the gear box is fixedly connected with the encoder seat; the gear set is arranged inside the gear box and is in transmission connection with the main shaft gear; an initial gear and a final gear that are an initial gear and a final gear of the gear set, respectively; a pair of magnetic steels fixedly connected with the initial gear and the final gear respectively; the encoder plate is fixedly connected with the gear box; and the pair of magnetic sensors are fixedly connected with the encoder board and respectively correspond to the pair of magnetic steels one by one. When the magnetic multi-turn absolute value encoder provided by the utility model is used, the structure is simple, the production and the processing are more convenient, the accuracy of data detection is ensured, and the magnetic multi-turn absolute value encoder is more convenient for a user to maintain.

Description

Magnetic multi-turn absolute value encoder

Technical Field

The utility model relates to the technical field of encoders, in particular to a magnetic multi-turn absolute value encoder.

Background

The encoder is a device for compiling and converting signals (such as bit streams) or data into signal forms which can be used for communication, transmission and storage, and is divided into a shaft type and a shaft sleeve type, wherein a shaft of the encoder is used for transmission so as to facilitate detection; the encoder converts angular displacement or linear displacement into an electric signal, wherein the former is called a code disc, the latter is called a code scale, and the encoder can be divided into a contact type and a non-contact type according to a reading mode; the encoder can be divided into an incremental encoder and an absolute encoder according to the working principle, wherein the incremental encoder converts displacement into periodic electrical signals, converts the electrical signals into counting pulses, and expresses the size of the displacement by the number of the pulses, each position of the absolute encoder corresponds to a determined digital code, so that the indication value of the absolute encoder is only related to the starting position and the ending position of measurement and is not related to the middle process of measurement.

The existing magnetic multi-circle absolute value encoder is complex in structure, a plurality of gears are detected simultaneously, a plurality of groups of detection sensors need to be installed, production, processing and detection are not facilitated, a user who is inconvenient to overhaul the inside of the encoder is inconvenient, and inconvenience is brought to the user.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a magnetic multi-turn absolute value encoder, and aims to solve the problems that the existing magnetic multi-turn absolute value encoder is complex in structure, needs to be provided with a plurality of groups of detection sensors for detecting a plurality of gears simultaneously, is not beneficial to production, processing and detection, is inconvenient for a user to overhaul the interior of the encoder and brings inconvenience to the user.

In order to achieve the purpose, the utility model provides the following technical scheme:

a magnetic multi-turn absolute value encoder comprising:

the encoder seat and the measuring spindle; and

the main shaft gear is fixedly connected with the measuring main shaft;

the protective shell is detachably connected with the encoder seat;

the gear box is fixedly connected with the encoder seat;

the gear set is arranged inside the gear box and is in transmission connection with the main shaft gear;

an initial gear and a final gear, which are an initial gear and a final gear of the gear set respectively, and the transmission ratio of the initial gear to the main shaft gear is 1: 1;

a pair of magnetic steels fixedly connected with the initial gear and the final gear respectively;

the encoder plate is fixedly connected with the gear box;

the pair of magnetic sensors are fixedly connected with the encoder board and respectively correspond to the pair of magnetic steels one by one;

the distance between the magnetic steel and the magnetic sensor is 1-2 mm.

Preferably, one end of the measuring spindle extends to the inside of the gear box, and the other end extends to the outside of the encoder seat.

Preferably, the protective shell is detachably connected with the encoder seat through a connecting structure.

Preferably, the connection structure includes:

the pair of mounting grooves are oppositely arranged on two sides of the inner wall of the protective shell;

the mounting groove is an L-shaped groove;

the pair of mounting blocks are oppositely arranged on two sides of the encoder seat and correspond to the pair of mounting grooves one by one;

a set screw threadedly connected with one of the mounting blocks.

Preferably, the magnetic steel installed at the initial gear corresponds to the magnetic sensor for checking a single-turn position, and the magnetic steel installed at the final gear corresponds to the magnetic sensor for checking a multi-turn position.

Compared with the prior art, the utility model has the following beneficial effects:

when the magnetic multi-turn absolute value encoder provided by the utility model is used, the structure is simple, the production and the processing are more convenient, the accuracy of data detection is ensured, the protective shell can be more conveniently disassembled and assembled, and the maintenance by a user is more convenient.

Drawings

FIG. 1 is a schematic structural diagram of a magnetic multi-turn absolute value encoder according to the present invention;

FIG. 2 is a schematic diagram of a right side view of the gear box of the present invention;

fig. 3 is a left side view of the encoder board according to the present invention.

In the figure: 10 encoder seats, 11 measuring spindles, 12 spindle gear 20 protecting shells, 30 connecting structures, 31 installing grooves, 32 installing blocks, 33 fixing screws, 40 gear boxes, 50 encoder plates, 60 gear sets, 61 initial gears, 62 final gears, 63 magnetic steels and 70 magnetic sensors.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In a first embodiment, referring to fig. 1-3, a magnetic multi-turn absolute value encoder includes: an encoder base 10 and a measuring spindle 11; and a spindle gear 12 fixedly connected with the measuring spindle 11; a protective case 20 detachably connected to the encoder base 10; a gear box 40 fixedly connected with the encoder base 10; a gear set 60 disposed inside the gear case 40 and drivingly connected to the spindle gear 12; an initial gear 61 and a final gear 62, which are the initial gear and the final gear of the gear set 60, respectively, and the gear ratio of the initial gear 61 to the main shaft gear 12 is 1: 1; a pair of magnetic steels 63 fixedly connected to the initial gear 61 and the final gear 62, respectively; an encoder plate 50 fixedly connected to the gear case 40; a pair of magnetic sensors 70 fixedly connected to the encoder board 50 and respectively corresponding to the pair of magnetic steels 63 one by one; the distance between the magnetic steel 63 and the magnetic sensor 70 is 1-2 mm; the magnetic steel 63 mounted at the initial gear 61 corresponds to the magnetic sensor 70 for checking the single-turn position, and the magnetic steel 63 mounted at the final gear 62 corresponds to the magnetic sensor 70 for checking the multi-turn position.

When the device is used, the measuring spindle 11 sequentially drives the spindle gear 12, the initial gear 61, the gear set 60 and the stop gear 62 to rotate, so that the magnetic steel 63 is driven to rotate, the magnetic sensors 70 can detect corresponding data through detecting the magnetic steel 63, only two magnetic sensors 70 are used, the detection range is complete, and the device is convenient to produce and mount and also convenient to detect.

One end of the measuring spindle 11 extends to the inside of the gear box 40, and the other end extends to the outside of the encoder base 10.

In the second embodiment, please refer to fig. 1, the same structure is not described again, and the protective shell 20 and the encoder base 10 are detachably connected through the connecting structure 30.

The connection structure 30 includes: a pair of mounting grooves 31 oppositely disposed at both sides of the inner wall of the protective case 20; the mounting groove 31 is an L-shaped groove; a pair of mounting blocks 32 which are oppositely arranged at both sides of the encoder base 10 and correspond to the pair of mounting grooves 31 one by one; a set screw 33 threadedly coupled to one of the mounting blocks 32.

When needs are dismantled, twist off set screw 33 earlier, then rotate protective housing 20, pull off protective housing 20 at last can, this in-process installation piece 32 can remove along mounting groove 31, otherwise, can install easy operation, and convenient to use person carries out the dismouting to protective housing 20, and then more convenient to use person maintains.

In summary, the utility model provides a magnetic multi-turn absolute value encoder, which has a simple structure when in use, so that the production and the processing are more convenient, the accuracy of data detection is ensured, and the protective shell 20 can be more conveniently disassembled and assembled, so that the maintenance by a user is more convenient.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. A magnetic multi-turn absolute value encoder, comprising:

the encoder base (10) and the measuring spindle (11); and

a spindle gear (12) which is fixedly connected with the measuring spindle (11);

a protective shell (20) which is detachably connected with the encoder base (10);

a gear box (40) fixedly connected with the encoder base (10);

the gear set (60) is arranged inside the gear box (40) and is in transmission connection with the main shaft gear (12);

an initial gear (61) and a final gear (62) which are an initial gear and a final gear of the gear set (60), respectively, and a gear ratio of the initial gear (61) to the main shaft gear (12) is 1: 1;

a pair of magnetic steels (63) fixedly connected to the initial gear (61) and the final gear (62), respectively;

an encoder plate (50) fixedly connected to the gear case (40);

a pair of magnetic sensors (70) fixedly connected to the encoder board (50), respectively corresponding to the pair of magnetic steels (63) one by one, and respectively used for checking a multi-turn position and a single-turn position;

the distance between the magnetic steel (63) and the magnetic sensor (70) is 1-2 mm.

2. A magnetic multi-turn absolute value encoder according to claim 1, characterized in that the measuring spindle (11) extends with one end to the inside of the gearbox (40) and with the other end to the outside of the encoder seat (10).

3. A magnetic multi-turn absolute value encoder according to claim 1, characterized in that the protective shell (20) is detachably connected to the encoder base (10) by means of a connecting structure (30).

4. A magnetic multi-turn absolute value encoder according to claim 3, characterized in that the connection structure (30) comprises:

a pair of mounting grooves (31) which are oppositely arranged on two sides of the inner wall of the protective shell (20);

the mounting groove (31) is an L-shaped groove;

a pair of mounting blocks (32) which are oppositely arranged on two sides of the encoder seat (10) and correspond to the mounting grooves (31) one by one;

a set screw (33) threadedly connected with one of the mounting blocks (32).

5. A magnetic multi-turn absolute value encoder according to claim 1, characterized in that the magnetic steel (63) mounted at the initial gear (61) corresponds to the magnetic sensor (70) for checking a single-turn position, and the magnetic steel (63) mounted at the final gear (62) corresponds to the magnetic sensor (70) for checking a multi-turn position.

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