CN202195061U

CN202195061U - Sealing device of encoder

Info

Publication number: CN202195061U
Application number: CN2011203091767U
Authority: CN
Inventors: 王欣宇
Original assignee: CHANGCHUN YUHENG OPTICS Co Ltd
Current assignee: CHANGCHUN YUHENG OPTICS Co Ltd
Priority date: 2011-08-24
Filing date: 2011-08-24
Publication date: 2012-04-18
Anticipated expiration: 2021-08-24

Abstract

The utility model relates to a sealing device of an encoder, which belongs to encoders. A sealing ring is installed on an encoder casing and is provided with a dove-tail lip opening. A small protrusion is arranged on an encoder spindle, the sealing ring and the encoder spindle form a V-shaped hollow cavity, and lubricating grease is filled in the V-shaped hollow cavity. The sealing device of the encoder has the advantages of being novel in structure, small in occupied space and small in starting torque of the encoder after assembly. In addition, inner filler of the sealing structure is not prone to leak.

Description

A kind of seal arrangement of encoder

Technical field

The utility model belongs to encoder, refers in particular to a kind of seal arrangement of encoder.

Background technique

Along with the continuous progress of science and technology, market is day by day obvious to the miniaturization demand of encoder.Because encoder itself belongs to precision type instrument; Inner cleanliness is had relatively high expectations; Other impurity such as dust, grease are in case pollute its inside; Can be easy to cause encoder phenomenons such as error code, mess code to occur, influence its normal use, this has just proposed higher requirement to the sealing of encoder self.The seal ring and the main shaft cooperating structure of the traditional type that encoder adopts at present, it is bigger to take up room, and it is bigger to contact area between seal ring and main shaft; Inner repack with grease amount is more; The development trend that this just often is difficult to adapt to the encoder miniaturization can make the starting torque of encoder increase greatly, is difficult to satisfy the requirement of user to little starting torque; More packing is easy in encoder main axis rotation process, leak outside, and pollutes encoder.

Summary of the invention

The utility model provides a kind of seal arrangement of encoder, to solve the problem that the conventional codec seal arrangement takes up room greatly, starting torque is big, packing is prone to leak outside.

The technological scheme of the utility model is: seal ring is installed on the encoder housing, and seal ring has the dove-tail form lip, on the encoder main shaft kick is arranged, and seal ring and encoder main shaft form the V-type cavity, are filled with lubricating grease in the V-type cavity.

The advantage of the utility model is: novel structure, and it is little to take up room, and the starting torque of assembling back encoder is little, and the sealing configuration inside stuffing is difficult for leaking outside.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Embodiment

Seal ring 2 is installed on the encoder housing 1, and seal ring 2 has the dove-tail form lip, on the encoder main shaft 3 kick is arranged, and seal ring 2 forms V-type cavity 4 with encoder main shaft 3, is filled with lubricating grease in the V-type cavity 4.

Kick of design on the encoder main shaft 3; Be used for cooperating with the dove-tail form lip of seal ring 2; The end that guarantees assembling back dove-tail form lip contacts with the encoder main shaft; Projection on the encoder main shaft then is included in the inside of dove-tail form lip, and the two forms the cavity of a V-type, can effectively control the loading of lubricating grease; During the encoder running, main shaft rotates, and rubs with the dove-tail form lip on the seal ring is terminal, and the lubricating grease that cavity inside is filled then not only can prevent the entering of introduced contaminants but also guaranteed the lubricity of rotation.

Claims

1. the seal arrangement of an encoder, it is characterized in that: seal ring is installed on the encoder housing, and seal ring has the dove-tail form lip, on the encoder main shaft kick is arranged, and seal ring and encoder main shaft form the V-type cavity, are filled with lubricating grease in the V-type cavity.