CN212747833U

CN212747833U - Multi-circle absolute value encoder for humid and dusty environment

Info

Publication number: CN212747833U
Application number: CN202021759129.8U
Authority: CN
Inventors: 李敏; 马文成
Original assignee: Tofe Sensing Technology Shanghai Co Ltd
Current assignee: Tofe Sensing Technology Shanghai Co Ltd
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2021-03-19
Anticipated expiration: 2030-08-21

Abstract

The utility model discloses a many rings of absolute value encoder for moist, dusty environment, include: the device comprises a main shaft, a pair of bearings, a main body, a shell, a bearing pressing seat, a gear set, a magnetic sheet seat, a magnet, a magnetic induction chip, a processing circuit board, a waterproof joint, a cable, a sealing ring, a sealing glue and a waterproof joint sealing ring. This a many rings of absolute value encoders for moist, many dirt environment has integrateed the integral type structure of single ring gear for the main shaft, has avoided split type single ring gear and main shaft gyration decentraction to the influence in gear train life-span, has guaranteed the life of encoder, and sealed respond well simultaneously suits to use under moist, many dirt environment, compact structure, and it is convenient to dismantle.

Description

Multi-circle absolute value encoder for humid and dusty environment

Technical Field

The utility model relates to an encoder field provides a many rings of absolute value encoders for moist, dusty environment very much.

Background

Encoders, as a sensor, are increasingly used in various industrial controls, such as numerically controlled machines, robots, and motors. According to different working principles, the encoder can be divided into an incremental encoder and an absolute value encoder. The absolute value encoder can be divided into a single-turn absolute value encoder and a multi-turn absolute value encoder, and under many occasions (such as in height and length measuring equipment), the working stroke of the equipment usually exceeds one turn, so that the single-turn absolute value encoder cannot meet the requirement, and the multi-turn absolute value encoder is required to be used for carrying out multi-turn data recording.

Many rings of absolute value encoders that use on the market at present are the similar structure encoder of foreign import or other domestic producers production mostly, the meshing of the single circle part of many rings of gear parts and main shaft is through a single ring gear, single ring gear and main shaft are mostly split type, hardly guarantee the gyration center pin of single ring gear and the gyration center pin coincidence of main shaft, this just leads to the gear to produce abnormal friction in the meshing process easily, long-time use influences many rings of gear parts life, and then reduce the life of whole many rings of absolute value encoders, in addition, most many rings of absolute value encoders's protection rank is lower at present, can't adapt to more abominable environment, consequently, in order to solve above-mentioned problem, it is very necessary to design a many rings of absolute value encoders that is used for the humidity, dusty environment.

SUMMERY OF THE UTILITY MODEL

In view of the above, in order to solve the above problems, the present invention provides a multi-turn absolute encoder for use in a wet, dusty environment.

The utility model provides a technical scheme is: a multi-turn absolute value encoder for use in a wet, dusty environment, comprising: the bearing comprises a main shaft, a pair of bearings, a main body, a shell, a bearing pressing seat, a gear set, a magnet sheet seat, a magnet, a magnetic induction chip, a processing circuit board, a waterproof joint, a cable, a sealing ring, a sealing rubber and a waterproof joint sealing ring, wherein the main shaft penetrates through the main body, the joints of the main shaft and the bearings are provided with a pair of the bearings, each bearing is a bearing with a gland, the bearing pressing seat is sleeved on the main shaft and used for limiting one side of one of the bearings, the gear set is placed around the main shaft and is respectively connected with the end face of the main body through a support column, a single-ring gear meshed with the gear set is integrated on the main shaft, the upper end face of the main shaft is processed with a groove used for bearing the magnet sheet seat, the magnet is located in the magnet sheet seat, the processing circuit board is located right above the magnet and, the magnetic induction chip is located handle circuit board lower surface center department, and with magnet center department is corresponding, the casing suit is in the main part outside, the cable runs through the casing, and with the output of handling circuit board is connected, water joint sets up the cable with the casing junction, the sealing washer with sealed glue from the top down sets gradually the casing with the main part junction, the water joint sealing washer is located water joint with the casing junction.

Further preferably, a longitudinal section of a joint portion between the housing and the body is a tapered surface.

Further preferably, the processing circuit board is coated with a protective layer.

Preferably, the main body is provided with an annular groove for bearing the sealing ring and the sealant.

Further preferably, the shell is a shell treated by oxidation.

The utility model provides a many rings of absolute value encoders for moist, many dirt environment, integrated single ring gear on the main shaft has guaranteed the gyration concentricity of single ring gear and main shaft, produces the abnormal friction when having avoided single ring gear and many rings of gear train gear engagement, reduces the whole life of encoder, and is sealed respond well simultaneously, uses under adaptation moist, many dirt environment, and compact structure dismantles convenient many rings of absolute value encoders.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and embodiments:

FIG. 1 is a schematic diagram of a multi-turn absolute value encoder for use in a wet, dusty environment;

FIG. 2 is a front cross-sectional view of a multi-turn absolute value encoder for use in a wet, dusty environment;

FIG. 3 is a top cross-sectional view of the spindle, the body, the housing, the gear set, and the seal ring of the multi-turn absolute encoder for wet and dusty environments;

FIG. 4 is a front view of the spindle, the bearing, the gear set, the magnet sheet seat, the magnetic induction chip and the processing circuit board of the multi-turn absolute value encoder for wet and dusty environment;

FIG. 5 is a top view of the spindle, the bearing, the body, and the seal ring in a multi-turn absolute value encoder for wet, dusty environments of the present invention;

FIG. 6 is a circuit diagram of a multi-turn absolute value encoder for use in a wet, dusty environment;

in the figure: 1. a main shaft; 2. a bearing; 3. a main body; 4. a housing; 5. a bearing pressing seat; 6. a gear set; 7. a magnetic sheet seat; 8. a magnet; 9. a magnetic induction chip; 10. processing the circuit board; 11. a waterproof joint; 12. a cable; 13. a seal ring; 14. sealing glue; 15. waterproof joint sealing washer.

Detailed Description

The invention will be further explained below with reference to specific embodiments, without limiting the invention.

As shown in fig. 1-6, the present invention provides a multi-turn absolute value encoder for wet, dusty environments, comprising: the bearing comprises a main shaft 1, a pair of bearings 2, a main body 3, a shell 4, a bearing pressing seat 5, a gear set 6, a magnetic sheet seat 7, a magnet 8, a magnetic induction chip 9, a processing circuit board 10, a waterproof joint 11, a cable 12, a sealing ring 13, a sealant 14 and a waterproof joint sealing ring 15, wherein the main shaft 1 penetrates through the main body 3 and the joint is provided with a pair of bearings 2, each bearing 2 is a bearing with a gland, the bearing pressing seat 5 is sleeved on the main shaft 1 and used for limiting one of the bearings 2, the gear set 6 surrounds the main shaft 1 and is placed and respectively connected with the end face of the main body 3 through a support column, the main shaft 1 is integrated with a single-ring gear which is meshed with the gear set 6, the upper end face of the main shaft 1 is processed with a groove which is used for bearing the magnetic sheet seat 7, the magnet 8 is positioned in the magnetic sheet seat 7, processing circuit board 10 is located directly over magnet 8, and through No. two support columns with 3 end-to-end connections of main part, magnetic induction chip 9 is located processing circuit board 10 lower surface center department, and with 8 center departments of magnet are corresponding, 4 suits of casing are in the 3 outsides of main part, cable 12 runs through casing 4, and with processing circuit board 10's output is connected, water joint 11 sets up cable 12 with 4 junctions of casing, sealing washer 13 with sealed 14 from the top down sets gradually casing 4 with 3 junctions of main part, water joint sealing washer 15 is located water joint 11 with 4 junctions of casing. After the installation is finished through the installation position, the main shaft 1 is connected with a driving shaft of an external driving motor through a coupler, so that the main shaft 1 can rotate along with the rotation of the external driving motor, wherein the main body 3 does not rotate along with the rotation of the main shaft 1 only by the bearing 2 between the main shaft 1 and the main body 3, so that the inner part of the device rotates, the single-ring gear at the upper end is integrated on the main shaft 1 and rotates along with the rotation of the main shaft 1, the rotation concentricity of the single-ring gear and the main shaft is ensured, abnormal friction generated when the single-ring gear is meshed with the multi-ring gear set gear is avoided, the whole service life of the encoder is shortened, meanwhile, the sealing effect is good, the device is suitable for use in a humid and dusty environment, the structure is compact, the dismounting is convenient, and the gear set 6 is meshed with the single-ring gear, therefore, in the process of rotating the single-ring gear, the gear in the gear set 6 is also rotated through the meshing action, the tooth number of the gear set 6 is selected to be different from that of the single-ring gear, the output rotating number of turns is also different, and the number of turns of the magnet 8 driven by the magnet sheet seat 7 to rotate is also different, so that the rotating number signal received by the corresponding magnetic induction chip 9 is also changed, the magnetic induction chip 9 transmits the acquired signal to the processing circuit board 10, the signal is transmitted to an external display device such as an industrial personal computer and the like through a cable 12 through the circuit processing in the processing circuit board 10, the conditions of the rotating position, the number of turns and the like are conveniently displayed on the display device, wherein the external shell 4 is only used for protecting the whole, the internal electronic elements are well protected, wherein the bearing press seat 5 positioned above the main shaft 1, the upper end of the bearing 2 is limited, the fixing is convenient, the magnetic sheet seat 7 is only used for bearing a magnet 8, the waterproof joint 11 between the shell 4 and the cable 12 is convenient for well sealing the pore, the water entering into the inner part through the gap is prevented, and the like, the sealing ring 13 and the sealant 14 are sequentially arranged at the joint of the shell 4 and the main body 3 from top to bottom, so that the double-layer gap protection is convenient, the waterproof joint sealing ring 15 between the waterproof joint 11 and the shell 4 gap is convenient for adapting to the extrusion, the gap is well sealed, and the sealing effect is only realized, but not limited to rubber or silica gel.

As can be seen from fig. 1 to 6 of the specification, the longitudinal section of the joint portion between the housing 4 and the main body 3 is a conical surface, so that the two parts can be conveniently buckled with each other according to the situation shown in fig. 2, the joint surface is inclined, so that the two parts are well buckled, are not prone to sliding out, are relatively convenient to install, are tightly buckled and connected with each other, are free of screws and are packaged in a one-step extrusion manner, and the double protection structures of the sealing ring 13 and the sealing glue 14 are respectively arranged at the matching portion of the conical surface, so that the encoder has a good protection function on external moisture and dust.

As can be seen from fig. 1 to 6 of the specification, the processing circuit board 10 is coated with a protective layer to protect the processing circuit board 10, and the protective layer includes, but is not limited to, an oxidation-resistant layer, a waterproof layer, and the like.

As can be seen from fig. 1 to 6 of the specification, the main body 3 is respectively provided with an annular groove for bearing the sealing ring 13 and the sealant 14, the sealing ring 13 and the sealant 14 are encapsulated in the annular groove, and the sealing ring 13 and the sealant 14 protrude out of the surface of the groove, when the shell 4 is buckled with the main body 3, the sealing ring 13 generates elastic deformation, the sealant 14 is extruded out and fills a gap between the shell 4 and the main body 3, the elastic deformation of the sealing ring 13 and the gap filling of the extruded sealant 14 perform double protection, and the sealing reliability is ensured.

As can be seen from fig. 1 to 6 of the specification, the housing 4 is a housing 4 treated by oxidation, and can be effectively protected from external moisture.

The embodiments of the present invention are written in a progressive manner, emphasizing the differences of the various embodiments, and similar parts can be referred to each other.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A multi-turn absolute value encoder for use in a wet, dusty environment, comprising: the bearing comprises a main shaft (1), a pair of bearings (2), a main body (3), a shell (4), a bearing pressing seat (5), a gear set (6), a magnetic sheet seat (7), a magnet (8), a magnetic induction chip (9), a processing circuit board (10), a waterproof joint (11), a cable (12), a sealing ring (13), a sealing glue (14) and a waterproof joint sealing ring (15), wherein the main shaft (1) penetrates through the main body (3) and a joint of the main shaft and the bearing (2), each bearing (2) is a bearing with a gland, the bearing pressing seat (5) is sleeved on the main shaft (1) and used for limiting one side of one of the bearings (2), the gear set (6) is placed around the main shaft (1) and is connected with the end face of the main body (3) through a support column, and a single-ring gear meshed with the gear set (6) is integrated on the main shaft (1), the processing of main shaft (1) up end has the recess that is used for bearing magnet piece seat (7), magnet (8) are located in magnet piece seat (7), processing circuit board (10) are located directly over magnet (8), and through No. two support columns with main part (3) end connection, magnetism induction chip (9) are located processing circuit board (10) lower surface center department, and with magnet (8) center department is corresponding, casing (4) suit is in the main part (3) outside, cable (12) run through casing (4), and with the output of processing circuit board (10) is connected, water joint (11) set up cable (12) with casing (4) junction, sealing washer (13) with sealed glue (14) set gradually from the top down casing (4) with main part (3) junction, the waterproof joint sealing ring (15) is located at the joint of the waterproof joint (11) and the shell (4).

2. A multiturn absolute value encoder for wet, dusty environments according to claim 1, characterized in that the longitudinal section of the junction of the housing (4) and the body (3) is a conical surface.

3. A multiturn absolute value encoder for wet, dusty environments according to claim 1, characterized in that the processing circuit board (10) is coated with a protective layer.

4. A multiturn absolute value encoder for wet, dusty environments, according to claim 1, characterized in that the body (3) is machined with an annular groove for carrying the sealing ring (13) and the sealing glue (14), respectively.

5. A multiturn absolute value encoder for wet, dusty environments according to claim 1, characterized in that the housing (4) is a housing (4) treated by oxidation.