Shaft end thread universal adjustable photoelectric encoder

Abstract

The utility model relates to the technical field of sensors, in particular to a shaft end thread universal adjustable photoelectric encoder which is simple, compact and reasonable in structure. The U-shaped groove fixing ring is convenient to position and is connected with the universal shaft sleeve through a bolt, so that universal adjustment is formed to be adaptive to automatic adjustment in a jolting state of automobile movement; the main shaft, the nut and the first shaft sleeve are positioned and connected to the measuring disc for fastening, the three-bearing heavy-load structure can be suitable for a user eccentric stress heavy-load environment, the bearings and the inner side of the protection assembly are provided with sealants, the protection assembly is connected with the combination body, the cable assembly is provided with sealants, and the metal interface sleeve is suitable for outdoor rain, dew and dust severe environments. According to the mode, the technical problems that the structure and the installation mode of a photoelectric encoder are difficult to adapt to new working conditions, the service life is short and the reliability is poor when the photoelectric encoder is used for detecting the movement of the automobile tire hub in the prior art are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sensor technical field especially relates to a shaft end thread universal adjustable photoelectric encoder. BACKGROUND

[0002] Photoelectric encoder as a kind of sensor, by national defense military department gradually spreads to civilian industrial department. Such as by on artillery director, spacecraft, military vehicle radar application spreads to numerical control machine tool, robot, automatic control production line, motor etc. In prior art, photoelectric encoder mainly adopts the structure of photoelectric pair tube, luminous tube and photocell. Through photoelectric conversion principle, the detection of speed ring and position ring is realized. In the original conventional scheme, the encoder main shaft adopts round shaft, and is equipped with tail shaft end manual rotating rod, the rotating rod is threaded through hollow through shaft encoder, is coupled by screwing screw.

[0003] However, when this kind of encoder is applied to automobile tire wheel hub movement detection, faces many severe challenges. Such application scenarios are usually installed outdoors, and the working environment is extremely harsh, can encounter rain, dust, silt invasion, and also bear the influence of movement jolt. In such harsh environment, the service life of ordinary encoder is extremely short, often only about 3 months, and will fail due to water ingress, dust invasion and other reasons.

[0004] In summary, when photoelectric encoder is used for automobile tire wheel hub movement detection, its structure and installation mode are difficult to adapt to new working conditions, and there are problems of short service life and poor reliability. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of shaft end thread universal adjustable photoelectric encoder, to solve the technical problems, such as the structure and installation mode of photoelectric encoder in prior art are difficult to adapt to new working conditions when automobile tire wheel hub movement is detected, there are short service life and poor reliability.

[0006] To realize the above-mentioned purpose, a kind of shaft end thread universal adjustable photoelectric encoder is used in the utility model, including combined main body, main shaft, bearing, first shaft sleeve, measuring disc, nut, grating disc, second shaft sleeve, parallel light source assembly, circuit board, connecting piece, U-shaped groove fixing ring, connecting screw, universal shaft sleeve, cable assembly and protection assembly;

[0007] The main shaft is connected with the combined body through the bearing, the first shaft sleeve is arranged on the main shaft, the measuring disc is connected with the first shaft sleeve, the nut is connected with the main shaft, the grating disc is connected with the main shaft through the second shaft sleeve, the parallel light source assembly is installed on the combined body, and the circuit board is installed on the combined body through the connecting piece; the U-shaped groove fixing ring is connected with the combined body through the connecting screw, and the universal shaft sleeve is connected with the U-shaped groove fixing ring.

[0008] The protection assembly is detachably connected with the combined body, and the cable assembly is arranged on the protection assembly.

[0009] The protection assembly comprises a shell and a plurality of fasteners, the shell covers the combined body, and the plurality of fasteners are all penetrated through the shell and are all screwed on the combined body.

[0010] The cable assembly comprises a cable body and a metal interface sleeve, and the cable body is arranged on the shell through the metal interface sleeve.

[0011] The connecting piece is a support.

[0012] The circuit board is provided with an electronic circuit, an IC array chip D1 is connected with an electronic circuit component, an upper end of the IC array chip D1 is connected with a resistor R1 through a wire and then connected with a power supply VCC, a resistor R2 is connected with the IC array chip D1, the IC array chip D1 is connected with the power supply VCC and the ground GND through wires at two ends respectively, and the IC array chip D1 is connected with A, B signals and a zero signal Z through wires.

[0013] The utility model discloses a kind of shaft end threaded universal adjustable photoelectric encoders, the utility model simple structure, compact, reasonable.The U-shaped groove fixing ring is positioned conveniently, the U-shaped groove fixing ring is connected with the universal shaft sleeve through bolt, forms universal adjustment, is adapted to the automatic adjustment of the state of automobile motion jolt;The main shaft, the nut and the first shaft sleeve are positioned and connected in the measuring disc fastening, three bearing heavy load type structures can be applicable to user eccentric stress heavy load environment, the bearing, the inner side of the protection assembly is with sealant, the protection assembly is connected with the combined body, the cable assembly is with sealant, the metal interface sleeve is adapted to outdoor rain and dust harsh environment;In this way, the photoelectric encoder of prior art is solved when automobile tire wheel hub motion detection, its structure and installation mode are difficult to adapt to new working conditions, there is the technical problem of short service life, poor reliability. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0015] Fig. 1 Figure 1 is a structural schematic diagram of the shaft end threaded universal adjustable photoelectric encoder of the present application.

[0016] Fig. 2 Figure 2 is a circuit principle diagram of the shaft end threaded universal adjustable photoelectric encoder of the present application.

[0017] Fig. 3 Figure 3 is an electronic component structure diagram of the present application.

[0018] 1-combination body, 2-main shaft, 3-bearing, 4-first shaft sleeve, 5-measuring disc, 6-nut, 7-grating disc, 8-second shaft sleeve, 9-parallel light source assembly, 10-circuit board, 11-connector, 12-U-shaped groove fixing ring, 13-connection screw, 14-universal shaft sleeve, 15-cable body, 16-metal interface sleeve, 17-housing, 18-fastener. DETAILED DESCRIPTION

[0019] The embodiments of the present application will be described in detail below, examples of the embodiments are shown in the drawings, the embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0020] Please refer to Figs. 1-3 , wherein Fig. 1 Figure 1 is a structural schematic diagram of the shaft end threaded universal adjustable photoelectric encoder of the present application. Fig. 2 Figure 2 is a circuit principle diagram of the shaft end threaded universal adjustable photoelectric encoder of the present application. Fig. 3 Figure 3 is an electronic component structure diagram of the present application.

[0021] The present application provides a kind of shaft end threaded universal adjustable photoelectric encoder, including combination body 1, main shaft 2, bearing 3, first shaft sleeve 4, measuring disc 5, nut 6, grating disc 7, second shaft sleeve 8, parallel light source assembly 9, circuit board 10, connector 11, U-shaped groove fixing ring 12, connection screw 13, universal shaft sleeve 14, cable assembly and protection assembly;

[0022] The main shaft 2 is connected with the combined body 1 through the bearing 3, the first shaft sleeve 4 is arranged on the main shaft 2, the measuring disc 5 is connected with the first shaft sleeve 4, the nut 6 is connected with the main shaft 2, the grating disc 7 is connected with the main shaft 2 through the second shaft sleeve 8, the parallel light source assembly 9 is installed on the combined body 1, and the circuit board 10 is installed on the combined body 1 through the connecting piece 11; the U-shaped groove fixing ring 12 is connected with the combined body 1 through the connecting screw 13, and the universal shaft sleeve 14 is connected with the U-shaped groove fixing ring 12.

[0023] The protection assembly is detachably connected with the combined body 1, and the cable assembly is arranged on the protection assembly.

[0024] The cable assembly comprises a cable body 15 and a metal interface sleeve 16, and the cable body 15 is arranged on the shell 17 through the metal interface sleeve 16.

[0025] The connecting piece 11 is a support column.

[0026] For this specific embodiment, the utility model has simple structure, compactness and rationality. The U-shaped groove fixing ring 12 is convenient to position, the U-shaped groove fixing ring 12 is connected with the universal shaft sleeve 14 through bolts, automatic adjustment suitable for the state of automobile movement and bumping is formed, the main shaft 2, the nut 6 and the first shaft sleeve 4 are positioned and connected to the fastening of the measuring disc 5, the three-bearing 3 heavy load type structure can be applied to the eccentric stress heavy load environment of the user, the bearing 3, the inner side of the protection assembly is provided with sealing glue, the protection assembly is connected with the combined body 1, the cable assembly is provided with sealing glue, and the metal interface sleeve 16 is suitable for outdoor rain and dust harsh environment. In this way, the technical problems that the structure and installation mode of the photoelectric encoder automobile tire wheel hub movement detection in the prior art are difficult to adapt to new working conditions, have short service life and poor reliability are solved.

[0027] The protection assembly comprises a shell 17 and a plurality of fasteners 18, the shell 17 covers the combined body 1, and the plurality of fasteners 18 all penetrate the shell 17 and are all screwed on the combined body 1.

[0028] For this specific embodiment, the shell 17 is fixed on the combined body 1 through the plurality of fasteners 18, so that the circuit board 10 and other components can be protected.

[0029] Second, the circuit board 10 is provided with electronic circuit, electronic circuit components connect IC array chip D1 upper end through the wire to the resistance R1 and then connect power supply VCC, IC array chip D1 is connected with resistance R2, and the both ends of IC array chip D1 are connected with power supply VCC and ground GND through wire respectively, and A, B signal and zero signal Z are connected through wire.

[0030] When the photoelectric encoder is used, the photoelectric encoder has simple, compact and reasonable structure, the U-shaped groove fixing ring 12 is convenient to position, the U-shaped groove fixing ring 12 is connected with the universal shaft sleeve 14 through bolts, universal adjustment is formed and is adapted to automatic adjustment of the state of automobile movement and bumping, the main shaft 2, the nut 6 and the first shaft sleeve 4 are positioned and connected to the measuring disc 5 fastening, the three bearing 3 heavy load type structure can be applied to the eccentric stress heavy load environment of the user, the bearing 3, the inner side of the protection assembly is provided with sealing glue, the protection assembly is connected with the combined main body 1, the cable assembly is provided with sealing glue, and the metal interface sleeve 16 is suitable for outdoor rain and dust harsh environment, so that the technical problems that the structure and installation mode of the photoelectric encoder in the prior art are difficult to adapt to new working conditions, the service life is short, and the reliability is poor are solved.

[0031] Since the parallel light array chip data reading is adopted, the high-quality original signal can further improve the positioning accuracy and running speed of the encoder; since the photoelectric sensing reading part adopts an IC integrated chip, and the amplification and shaping circuit is built-in, and the chip is bonded on a small circuit board, when the encoder works, the grating rotates to generate relative motion, the chip generates an original signal and is amplified and shaped in the chip, and a stable and reliable pulse signal can be output, the load capacity is high, the reliability and anti-interference performance of the encoder are improved, the problems of weak original signal, large discrete nature and complex subsequent circuit of the traditional photoelectric tube photocell scheme are solved; since there is no static grating, the parallel light source and the internal integrated circuit of the chip process the signal, so that the gap can reach 0.4mm (allowable axial movement + / - 0.10mm), and the radial play + / - 0.04mm, so that the use requirements of the encoder on the bearing 3 and the shafting are greatly reduced, the overall performance of the encoder, the environmental adaptability is greatly improved, the service life is prolonged, and compared with the service life of the traditional photoelectric tube photocell structure encoder, the service life can be improved by about 10 times.

[0032] The circuit principle of the utility model is as follows:

[0033] The grating disc 7 is arranged according to a certain rule, and the zero signal Z and A and B patterns are formed by the light gate effect of the photoelectric assembly in the light transmission and non-light transmission, and the photoelectric current of the analog sine wave is formed. After differential comparison, amplification shaping and logic circuit processing, the A, B signal and zero signal Z reflecting the position of the automobile tire hub rotating shaft to be detected can be output. The user can process and use the rectangular wave (sine wave) in the subsequent circuit. The upper end of the integrated module D1 is connected to the resistor R1 and then to the power supply VCC through a wire in the electronic circuit component connection, the resistor R2 is connected to the integrated module D1, the power supply VCC and the ground GND are connected to the two ends of the integrated module D1 through wires respectively, and the A, B signal and zero signal Z are connected through wires.

[0034] The utility model discloses a working principle:

[0035] Because a piece of grating disc 7 is fixed on the main shaft 2, the grating disc 7 has the pattern code that is arranged according to a certain rule and is transparent or opaque, which is engraved by photoetching. When the user automobile hub rotating shaft drives the main shaft 2 to rotate synchronously, the grating disc 7 also rotates, and the IC array chip and the parallel light source assembly 9 will receive the transparent or opaque signal on the grating disc 7 and convert it into an electric signal. Then, through the logic circuit composed of the integrated circuit in the IC array chip and the electronic device on the circuit board 10, the signal is processed into a rectangular wave or a sine wave output reflecting the code on the grating disc 7. This signal output contains the information of the user automobile hub shaft motion state, and completes the conversion from mechanical motion physical quantity (position, speed, acceleration) to electric quantity.

[0036] The above only discloses a preferred embodiment of the utility model, and of course cannot limit the scope of the utility model, and the person skilled in the art can understand that all or part of the above-mentioned embodiment can be implemented, and equivalent changes can be made according to the utility model claim, which still belongs to the scope covered by the utility model.

Claims

1. A shaft-end thread universally adjustable photoelectric encoder, characterized in that, It includes a main body, spindle, bearing, first bushing, measuring disk, nut, grating disk, second bushing, parallel light source assembly, circuit board, connector, U-groove retaining ring, connecting screw, universal bushing, cable assembly and protective assembly; The main shaft is connected to the main assembly via the bearing. The first bushing is mounted on the main shaft. The measuring disk is connected to the first bushing. The nut is connected to the main shaft. The grating disk is connected to the main shaft via the second bushing. The parallel light source assembly is mounted on the main assembly. The circuit board is mounted on the main assembly via the connector. The U-groove retaining ring is connected to the main assembly via the connecting screw. The universal bushing is connected to the U-groove retaining ring. The protective component is detachably connected to the main body of the assembly, and the cable assembly is disposed on the protective component.

2. The shaft-end threaded universal adjustable photoelectric encoder as described in claim 1, characterized in that, The protective assembly includes a housing and a plurality of fasteners. The housing covers the combined body, and the plurality of fasteners penetrate the housing and are all tightened onto the combined body.

3. The shaft-end threaded universal adjustable photoelectric encoder as described in claim 2, characterized in that, The cable assembly includes a cable body and a metal connector sleeve, with the cable body mounted on the housing via the metal connector sleeve.

4. The shaft-end thread universal adjustable photoelectric encoder as described in claim 3, characterized in that, The connector is a support column.

5. The shaft-end thread universal adjustable photoelectric encoder as described in claim 4, characterized in that, The circuit board is equipped with electronic circuits. In the connection of electronic circuit components, the upper end of the IC array chip D1 is connected to the resistor R1 and then to the power supply VCC through a wire. The resistor R2 is connected to the IC array chip D1. The two ends of the IC array chip D1 are connected to the power supply VCC and ground GND through wires, and A, B signals and zero position signal Z are connected through wires.

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