CN104964700B

CN104964700B - A kind of optical encoder

Info

Publication number: CN104964700B
Application number: CN201510292352.3A
Authority: CN
Inventors: 胡俊廷
Original assignee: GAOMING ELECTRONICS (HUIZHOU) CO Ltd
Current assignee: GAOMING ELECTRONICS (HUIZHOU) CO Ltd
Priority date: 2015-05-29
Filing date: 2015-05-29
Publication date: 2017-07-11
Anticipated expiration: 2035-05-29
Also published as: CN104964700A

Abstract

The present invention discloses a kind of optical encoder, including：Housing, rotor, block, support, silica gel handle, bowl shell fragment, to penetrating grating and PCBA.It is electrically connected to penetrating grating on PCBA, to penetrating grating with a transmitting grating and a reception grating；Rotor is arranged in housing and is connected with block, and block, which has, forms light hole between multiple catch, multiple catch, multiple catch shuttle between transmitting grating and reception grating successively；Branch is set up on PCBA, and block is rotatablely installed on support, and silica gel handle is fixed on support, and silica gel handle is abutted by bowl shell fragment with PCBA, and rotor is arranged in block and support and abutted with silica gel handle.Optical encoder drives block to rotate by rotor, realizes to the reception for penetrating grating light source with blocking, so as to export stable low-and high-frequency signal.Light source is directly received using to penetrating grating, reduce light source and transmitted by light-guiding pillar and error occur, performance is more stablized, and structure is simpler, packaging technology simplifies, and reduces product cost.

Description

A kind of optical encoder

Technical field

The present invention relates to a kind of encoder, more particularly to a kind of optical encoder.

Background technology

Optical encoder is a kind of the geometry of machinery displacement on output shaft to be converted into pulse or number by opto-electronic conversion The sensor of word amount, is current widely used sensor, be mainly used in vertical machining centre, horizontal Machining centers, On the numerical control devices such as gantry machining center.

Traditional optical encoder is to generally include a transmitting grating and two reception gratings, passes through light-guiding pillar realization pair The reception of light source, then goes to control the reception and blocking of light source, so as to form unstable low-and high-frequency signal by block.And this The complex structure of product is planted, cumbersome, production cost height, unstable properties is assembled.

The content of the invention

The purpose of the present invention is to overcome weak point of the prior art to form stable low-and high-frequency letter there is provided a kind of Number, product it is simple in construction, assembling is easy, and production cost is low, the stable optical encoder of performance.

The purpose of the present invention is achieved through the following technical solutions：

A kind of optical encoder, including：Housing, rotor, block, support, silica gel handle, bowl shell fragment, to penetrate grating and PCBA, the block, support, silica gel handle, bowl shell fragment, is contained in the housing to penetrating grating and PCBA；

Penetrate grating for described pair to be welded on the PCBA, described pair is penetrated grating with a transmitting grating and a reception light Grid；

The rotor is arranged in the housing and is connected with the block, and the block has multiple catch, multiple Light hole is formed between the catch, multiple catch shuttle between the transmitting grating and the reception grating successively；

The branch is set up on the PCBA, and the block is rotatablely installed on the support, and the silica gel handle is fixed and set In on the support, the silica gel handle is abutted by the bowl shell fragment with the PCBA, and the rotor is arranged in the block And the support is abutted with the silica gel handle.

It is preferred that, the optical encoder also includes iron covering piece, and the iron covering piece is closed in one end of the housing.

It is preferred that, the optical encoder also includes insulation film, and the insulation film is located at the iron covering piece and described Between PCBA.

It is preferred that, the optical encoder also include connector, the connector be arranged in the housing and with it is described PCBA is welded.

It is preferred that, the optical encoder also includes offering accepting groove, the bow in bow-shaped shrapnel, the inner walls Shape shell fragment is contained in the accepting groove.

It is preferred that, the optical encoder also includes connector, and the connector is fastened on the housing.

It is preferred that, offer screw thread on the connector.

It is preferred that, multiple catch circular array centered on the axis of the rotor is distributed.

Optical encoder drives block to rotate by rotor, realizes to the reception for penetrating grating light source with blocking, so as to export Stable low-and high-frequency signal.Light source is directly received using to penetrating grating, reduce light source and transmitted and missed by light-guiding pillar Difference, the performance of product is more stablized, and the structure of product is simpler, and packaging technology simplifies, and reduces the production cost of product.

Brief description of the drawings

Fig. 1 is the overall structure figure of the optical encoder of one embodiment of the invention；

Fig. 2 is the sectional view of the optical encoder shown in Fig. 1；

Fig. 3 is the decomposition chart of the optical encoder shown in Fig. 1.

Embodiment

With reference to embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited In this.

As shown in figure 1, its overall structure figure for the optical encoder 10 of one embodiment of the invention.Also referring to Fig. 2, It is the sectional view and decomposition chart of the optical encoder 10 shown in Fig. 1.

Optical encoder 10 includes：Housing 100, rotor 200, block 300, support 400, silica gel handle 500, bowl shell fragment 600th, to penetrating grating 700 and PCBA800, wherein, block 300, support 400, silica gel handle 500, bowl shell fragment 600, to penetrating grating 700 and PCBA800 is contained in housing 100.In the present embodiment, rotor 200 is that zinc closes rotor, and support 400 is that zinc closes support.

It is welded in penetrating grating 700 on PCBA800, to penetrating grating 700 with a transmitting grating 710 and a reception light Grid 720.

Rotor 200 is arranged in housing 100 and is connected with block 300, and block 300 has multiple catch 310, multiple gears Light hole 312 is formed between piece 310, multiple catch 310 shuttle between transmitting grating 710 and reception grating 720 successively.That is, Rotor 200 rotates, and drives the block 300 being attached thereto to rotate, the multiple catch 310 and light hole 312 on block 300 just can be handed over For by between transmitting grating 710 and reception grating 720, when catch 310 passes through, transmitting grating 710 can be blocked with receiving light Light between grid 720, when light hole 312 passes through, the light of transmitting grating 710 can be received by reception grating 720.Rotor 200 drive blocks 300 rotate, and by the control of the anglec of rotation, block 300 can discharge and cut off the light source to penetrating grating 700, from And a signal is exported, realize conducting function.

In the present embodiment, multiple catch 310 circular array centered on the axis of rotor 200 is distributed, particularly, The present embodiment is provided with four catch 310.

Support 400 is on PCBA800, and block 300 is rotatablely installed on support 400, and silica gel handle 500 is fixed at support On 400, silica gel handle 500 is abutted by bowl shell fragment 600 with PCBA800, and rotor 200 is arranged in block 300 and support 400 and silicon Glue handle 500 is abutted.Support 400 is used for support limit stop 300, while for fixing bowl shell fragment 600, passing through the pressing of rotor 200 So that silica gel handle 500 is contacted with PCBA800, conducting function is realized.

In the present embodiment, optical encoder 10 also includes iron covering piece 910 and insulation film 920, and iron covering piece 910 is closed in One end of housing 100, insulation film 920 is located between iron covering piece 910 and PCBA800, and insulation film 920 is played to PCBA800 Insulating effect, prevents that PCBA800 from directly contacting with iron covering piece 910 and occurring electric conduction phenomena.

In the present embodiment, optical encoder 10 also include connector 930, connector 930 be arranged in housing 100 and with PCBA800 is welded, and external power source can be provided for PCBA800 by connector 930.

In the present embodiment, optical encoder also includes offering accepting groove on bow-shaped shrapnel 940, the inwall of housing 100 110, bow-shaped shrapnel 940 is contained in accepting groove 110.

It is noted that in order that optical encoder 10 it is more convenient to install, optical encoder 10 also include connector 950, connector 950 is fastened on housing 100, and screw thread 952 is offered on connector 950, can be by housing by screw thread 952 100 are screwed together on external equipment.

Optical encoder 10 drives block 300 to rotate by rotor 200, realizes the reception and screening to penetrating the light source of grating 700 Gear, so as to export stable low-and high-frequency signal.Light source is directly received using to penetrating grating 700, reduce light source and pass through leaded light Post transmits and error occurs, and the performance of product is more stablized, and the structure of product is simpler, and packaging technology simplifies, and reduces production The production cost of product.

Above-described embodiment is preferably embodiment, but embodiments of the present invention are not by above-described embodiment of the invention Limitation, other any Spirit Essences without departing from the present invention and the change made under principle, modification, replacement, combine, simplification, Equivalent substitute mode is should be, is included within protection scope of the present invention.

Claims

1. a kind of optical encoder, it is characterised in that including：Housing, rotor, block, support, silica gel handle, bowl shell fragment, to penetrating Grating and PCBA, the block, support, silica gel handle, bowl shell fragment, are contained in the housing to penetrating grating and PCBA；

Penetrate grating for described pair to be welded on the PCBA, described pair is penetrated grating with a transmitting grating and a reception grating；

The rotor is arranged in the housing and is connected with the block, and the block has multiple catch, multiple described Light hole is formed between catch, multiple catch shuttle between the transmitting grating and the reception grating successively；

The branch is set up on the PCBA, and the block is rotatablely installed on the support, and the silica gel handle is fixed at institute State on support, the silica gel handle is abutted by the bowl shell fragment with the PCBA, the rotor is arranged in the block and institute Support is stated to abut with the silica gel handle；

The optical encoder also includes iron covering piece, and the iron covering piece is closed in one end of the housing；

The optical encoder also includes insulation film, and the insulation film is located between the iron covering piece and the PCBA；

The optical encoder also includes offering accepting groove in bow-shaped shrapnel, the inner walls, and the bow-shaped shrapnel is housed In in the accepting groove.

2. optical encoder according to claim 1, it is characterised in that the optical encoder also includes connector, institute Connector is stated to be arranged in the housing and weld with the PCBA.

3. optical encoder according to claim 1, it is characterised in that the optical encoder also includes connector, institute Connector is stated to be fastened on the housing.

4. optical encoder according to claim 3, it is characterised in that offer screw thread on the connector.

5. optical encoder according to claim 1, it is characterised in that multiple catch are with the axis of the rotor Centered on circular array be distributed.