CN201672929U

CN201672929U - Gear transmission mechanism of photomagnetic mixed multiturn rotary encoder

Info

Publication number: CN201672929U
Application number: CN2010201879371U
Authority: CN
Inventors: 顾正华; 江树兵; 严金荣
Original assignee: Koyo Electronics Wuxi Co Ltd
Current assignee: JTEKT Electronics Co Ltd
Priority date: 2010-05-06
Filing date: 2010-05-06
Publication date: 2010-12-15
Anticipated expiration: 2020-05-06

Abstract

The utility model provides a gear transmission mechanism of a photomagnetic mixed multiturn rotary encoder, which comprises a first gear connected with a spindle. The first gear is meshed with a lower gear of a second gear and the transmission ratio is 1:1. An upper gear of the second gear is meshed with a lower gear of a third gear and the transmission ratio is 4:1. An upper gear of the third gear is meshed with a lower gear of a fourth gear and the transmission ratio is 4:1. An upper gear of the fourth gear is meshed with fifth gear and the transmission ratio is 4:1. A magnet is arranged on the fifth gear. The second, third and fourth gears are all duplicate gears. The utility model has the advantages of accurate and reliable gear transmission ratio, simple manufacturing process of the gears, simple and convenient product assembly, reasonable space configuration, compact structure of the whole product, shortened volume convenient installation and use for a client.

Description

The so many circle rotary encoder of optomagnetic mixing gear drive

Technical field

The utility model relates to a kind of gear drive of rotary encoder, employed gear drive on the so many circle rotary encoder of especially a kind of optomagnetic mixing.

Background technology

Rotary encoder is the device that is used for measuring rotating speed, and the photo-electric rotary encoder is by opto-electronic conversion, can convert mechanical quantity such as the angular displacement of output shaft, angular velocity to corresponding electric pulse with digital quantity output (REP).Before the utility model structure is made, in existing rotary encoder technology, seldom use gear drive, even there is other multi-turn formula scrambler to use gear mechanism, employed gear arrangement space is also very big, make the design space of whole instrument strengthen, bring some inconvenience for client's installation.

Summary of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art, and the so many circle rotary encoder of a kind of optomagnetic mixing gear drive is provided, and gear transmission structure designs careful ingenious, and ratio of gear is accurately reliable.

According to the technical scheme that the utility model provides, the so many circle rotary encoder of described optomagnetic mixing gear drive comprises: the first order gear that is connected with main shaft, and first order gear is meshed with the lower gear of second level gear, and ratio of gear is 1: 1; Second level gear cog and the lower gear of the 3rd utmost point gear is meshed, ratio of gear is 4: 1; The 3rd utmost point gear cog and the lower gear of fourth stage gear is meshed, ratio of gear is 4: 1; Cog and the level V gear of fourth stage gear are meshed, and ratio of gear is 4: 1; On the described level V gear magnetite is installed; Described second and third, the level Four gear is duplicate gear.

Described first, second, third and fourth, the Pyatyi gear is radially staggered.

The utility model has the advantages that: gear ratio is accurately reliable; The manufacture craft of gear itself is simple, the product simple and convenient assembly, and spatial configuration is reasonable; Make the compact conformation of entire product, volume-diminished has made things convenient for client's installation and use.

Description of drawings

Fig. 1 is the utility model gear drive schematic diagram.

Fig. 2 is the utility model gear set schematic diagram of organizing work.

Fig. 3 is the so many circle rotary encoder of an optomagnetic mixing circuit working principle schematic.

Embodiment

The utility model is described in further detail below in conjunction with drawings and Examples, and as shown in Figure 1, 2, the utility model comprises a gear set, and is specific as follows.

One, gear drive proportioning

Whole gear set one has 5 gears, wherein second and third, the level Four gear is duplicate gear, is divided into coaxial two gears up and down.

1) first order gear 1 (24 teeth--modulus 0.5) directly links to each other with main shaft, drives first order gear 1 by main shaft and rotates;

2) lower gear of first order gear 1 and second level gear 2 (24 teeth--modulus 0.5) engagement drives the rotation of second level gear 2; Ratio of gear 1: 1.

3) the cogging of second level gear 2 (12 teeth--modulus 0.5) drives third level gear 3 lower gears (48 teeth--modulus 0.5) and rotates; Ratio of gear 4: 1.

4) the cogging of gear 3 (12 teeth--modulus 0.5) lower gear (48 teeth--modulus 0.5) that drives fourth stage gear 4 rotates for the third time; Ratio of gear 4: 1.

5) the cogging of fourth stage gear 4 (12 teeth--modulus 0.5) drives level V gear 5 (48 teeth--modulus 0.5) and rotates; Ratio of gear 4: 1.

At last, the magnetite that is installed on the level V gear 5 rotates.Whole ratio of gear is 64: 1, more than is the kind of drive and the mix proportion scheme of whole gear set.

Two, spatial placement

As shown in Figure 1, whole gear set design has utilized the staggered notion in space fully, is reasonably staggered in the very big transmission space of script, makes that mutually noninterfere is interrelated again between 5 gears, has dwindled taking up room of whole gear set greatly.Among Fig. 1 stagger successively in the axle center of 5 gears, and whole gear set can be installed in the shell than minor diameter, and each gear also will be avoided 3 installation column zones simultaneously.Fig. 2 is with the synoptic diagram after its expansion for the principle of work that gear set is described.

Comprising the so many circle rotary encoder of optomagnetic mixing of the present utility model mainly comprises:

1-spindle assemblies (containing bearing, rotating spindle, aluminium axle bed, grating platform);

2-gear drive group (total ratio of gear is 64: 1);

3-optical signalling processing unit (containing rotating grating plate, fixed light screen, signal transmission LED, photosignal receiving element PD, wiring board)

4-magnetic signal processing unit (containing magnet, magnetite signal processing chip, wiring board)

As shown in Figure 3, the generation signal was sent to signal processing circuit through signal amplification circuit after the light receiving system of the so many circle rotary encoder of optomagnetic mixing received individual pen signal directional light, arrived signal output apparatus again; Another road signal receiving unit receives the multi-turn signal magnetic line of force, produces signal and is sent to signal processing circuit, also arrives signal output apparatus at last; Signal after signal output apparatus will be handled is exported by cable.The number of turns ratio that described optical signalling is handled output unit and magnetic signal processing output unit is 64: 1.

Claims

1. the so many circle rotary encoder of optomagnetic mixing gear drive is characterized in that: comprise the first order gear that is connected with main shaft, first order gear is meshed with the lower gear of second level gear, and ratio of gear is 1: 1; Second level gear cog and the lower gear of the 3rd utmost point gear is meshed, ratio of gear is 4: 1; The 3rd utmost point gear cog and the lower gear of fourth stage gear is meshed, ratio of gear is 4: 1; Cog and the level V gear of fourth stage gear are meshed, and ratio of gear is 4: 1; On the described level V gear magnetite is installed; Described second and third, the level Four gear is duplicate gear.

2. the so many circle rotary encoder of optomagnetic mixing as claimed in claim 1 gear drive, it is characterized in that described first, second, third and fourth, the Pyatyi gear is radially staggered.