CN215596230U

CN215596230U - Encoder

Info

Publication number: CN215596230U
Application number: CN202122376043.8U
Authority: CN
Inventors: 蒋国明; 曹帅
Original assignee: Wuxi Sanle Precision Machinery Manufacturing Co ltd
Current assignee: Wuxi Sanle Precision Machinery Manufacturing Co ltd
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2022-01-21
Anticipated expiration: 2031-09-29

Abstract

The utility model relates to the technical field of encoders, in particular to an encoder.A rotating shaft is provided with glue grooves, glue is injected into the glue grooves before the rotating shaft is installed, then the rotating shaft is inserted into an installation cavity, the rotating shaft penetrates through a first bearing and a second bearing, the two glue grooves on the rotating shaft correspond to the two bearings one by one, and the glue is bonded with the inner walls of the first bearing and the second bearing, so that the rotating shaft and the inner ring of the bearing are fixed into a whole; in addition, the glue groove is convenient to arrange, after the rotating shaft is inserted into the bearing for a certain time, glue is automatically solidified to realize fixation between the rotating shaft and the bearing, and the installation is very convenient, so that the installation efficiency is improved.

Description

Encoder

Technical Field

The utility model relates to the technical field of encoders, in particular to an encoder.

Background

Encoders are commonly used in industrial automation equipment and are used for angle, velocity, position feedback. The encoder belongs to high accuracy sensor, requires that each tolerance chain is extremely strict when producing the installation to ensure the precision of encoder. However, the encoder works in various situations, and the size of the installation position of the encoder cannot be guaranteed in a client using the encoder.

Glue is mostly smeared on the outer side of the rotating shaft by using tools such as surface stickers and the like in the process of installing the rotating shaft, so that uneven smearing often occurs, when the rotating shaft is installed, the glue can be scraped and rubbed, the cohesiveness is poor when the glue is less, when the glue is more, the glue can be scraped and rubbed to the outer part of the rotating shaft and extruded to the outer part of the main body along the outer surface of the rotating shaft, the glue quantity between the rotating shaft and the bearing is less, the cohesiveness is not firm, and the rotating shaft falls off in the subsequent use.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the technical scheme provided by the utility model is as follows:

the utility model provides an encoder which comprises an encoder main body, a first bearing, a second bearing and a rotating shaft, wherein the first bearing is arranged on the encoder main body; an installation cavity is formed in the encoder main body; the mounting cavity is arranged in a cylindrical shape; the mounting cavity axially penetrates through the encoder main body; the first bearing and the second bearing are respectively arranged at two sides of the interior of the mounting cavity; the first bearing and the second bearing are coaxially arranged; the rotating shaft penetrates through the mounting cavity and penetrates through the first bearing and the second bearing; the inner ring of the first bearing and the inner ring of the second bearing can rotate along with the rotating shaft; two glue grooves are formed in the outer surface of the rotating shaft; the glue groove is annularly arranged along the outer surface of the rotating shaft; the inner walls of the first bearing and the second bearing respectively cover the notches of the two glue tanks.

Further, the cross section of the glue groove is rectangular or circular arc.

Furthermore, the glue groove is in smooth transition connection with the outer surface of the rotating shaft.

Further, the outer surface of the rotating shaft is closely attached to the inner wall of the first bearing and the inner wall of the second bearing.

Further, a step-shaped bulge part extends inwards from the inner wall of the mounting cavity; the inner diameter of the boss is smaller than the outer ring diameter of the first bearing and the second bearing; the inner diameter of the boss is larger than the diameters of the inner rings of the first bearing and the second bearing; the inner wall of the protruding part and the outer surface of the rotating shaft have a certain distance.

Further, the rotating shaft is formed in an integrated structure.

The utility model has the advantages or beneficial effects that:

according to the encoder provided by the utility model, the glue groove is formed in the rotating shaft, glue is injected into the glue groove before the rotating shaft is installed, then the rotating shaft is inserted into the installation cavity, the rotating shaft penetrates through the first bearing and the second bearing, the two glue grooves in the rotating shaft correspond to the two bearings one by one, and the glue is adhered to the inner walls of the first bearing and the second bearing, so that the rotating shaft and the inner ring of the bearing are fixed into a whole; in addition, the glue groove is convenient to arrange, after the rotating shaft is inserted into the bearing for a certain time, glue is automatically solidified to realize fixation between the rotating shaft and the bearing, and the installation is very convenient, so that the installation efficiency is improved.

Drawings

The utility model and its features, aspects and advantages will become more apparent from reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference symbols in the various drawings indicate like elements. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the utility model.

Fig. 1 is a sectional view of an encoder provided in embodiment 1 of the present invention;

fig. 2 is a sectional view of a rotary shaft in an encoder according to embodiment 1 of the present invention.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application.

It will be understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

As used herein, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used in the positional or orientational relationship illustrated in the figures to facilitate the description of the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the utility model.

The appearances of the terms first, second, and third, if any, are used for descriptive purposes only and are not intended to be limiting or imply relative importance.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The technical solutions in the embodiments of the present invention are described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the utility model without making creative efforts, belong to the protection scope of the utility model.

Example 1

In the prior art, glue is mostly smeared on the outer side of a rotating shaft by using tools such as surface stickers and the like in the process of installing the rotating shaft of an encoder, so that uneven smearing often occurs, the glue can be scraped and rubbed when the rotating shaft is installed, the cohesiveness is poor when the glue is less, the glue can be scraped and rubbed to the outer part of the rotating shaft when the glue is more, the glue is extruded to the outer part of a main body along the outer surface of the rotating shaft, the glue quantity between the rotating shaft and a bearing is less, the cohesiveness is not firm, and the rotating shaft falls off in the subsequent use.

In order to solve the above technical problem, an encoder provided in embodiment 1, as shown in fig. 1 to 2, includes an encoder main body 1, a first bearing 2, a second bearing 3, and a rotating shaft 4; a mounting cavity 11 is formed in the encoder main body 1; the mounting cavity 11 is arranged in a cylindrical shape; the mounting cavity 11 axially penetrates through the encoder body 1; the first bearing 2 and the second bearing 3 are respectively arranged at two sides of the interior of the mounting cavity 11; the first bearing 2 and the second bearing 3 are coaxially arranged; the rotating shaft 4 penetrates through the mounting cavity 11 and penetrates through the first bearing 2 and the second bearing 3; the inner ring of the first bearing 2 and the inner ring of the second bearing 3 can rotate along with the rotating shaft 4; two glue grooves 41 are arranged on the outer surface of the rotating shaft 4; the glue groove 41 is annularly arranged along the outer surface of the rotating shaft 4; the inner walls of the first bearing 2 and the second bearing 3 cover the notches of the two glue tanks 41 respectively.

In the embodiment 1, the glue groove 41 is formed on the rotating shaft 4, before the rotating shaft 4 is installed, glue is injected into the glue groove 41, then the rotating shaft 4 is inserted into the mounting cavity 11, the rotating shaft 4 passes through the first bearing 2 and the second bearing 3, the two glue grooves 41 on the rotating shaft 4 correspond to the two bearings one by one, the glue is adhered to the inner walls of the first bearing 2 and the second bearing 3, so that the rotating shaft 4 and the inner ring of the bearing are fixed into a whole, even if the glue flows out of the glue groove 41, the glue is remained between the bearing and the connecting gap of the rotating shaft 4, and can not be scraped to the outside of the main body along with the installation process of the bearing, through the arrangement of the glue groove 41, the injection amount of glue can be controlled, the problem of insecure bonding caused by too little glue is avoided, and excessive glue is prevented from overflowing to the outside of the main body to bond other parts, so that the mounting firmness of the rotating shaft 4 is improved; in addition, the glue groove 41 is convenient to arrange, after the rotating shaft 4 is inserted into the bearing for a certain time, glue is automatically solidified to realize fixation between the rotating shaft 4 and the bearing, and the installation is very convenient, so that the installation efficiency of the encoder is improved.

Preferably, in the encoder provided in embodiment 1, the cross section of the glue groove 41 is rectangular or circular arc. The shape of the glue tank 41 is not limited to the above shape, and any shape that can retain the glue in the glue tank 41 can be realized, and the rectangular or circular arc-shaped tank in embodiment 1 is easy to open, and is easy to manufacture.

Preferably, in order to enhance the mechanical property of the rotating shaft 4, in the encoder provided in this embodiment 1, the glue tank 41 is in smooth transition connection with the outer surface of the rotating shaft 4. Because the surface of pivot 4 itself is smooth form, sets up glue groove 41 on the surface of pivot 4 after, the mechanical properties of pivot 4 self can take place corresponding change, and especially comparatively sharp-pointed edge department, phenomenon such as damage appears in the change of stress very easily, consequently through above-mentioned setting, can slow down pivot 4 effectively because the wearing and tearing problem that stress concentration caused to pivot 4 to the life of extension pivot 4.

Preferably, in the encoder provided in embodiment 1, the outer surface of the rotating shaft 4 abuts against the inner wall of the first bearing 2 and the inner wall of the second bearing 3. Through the arrangement, the glue can be bonded with the inner wall of the bearing, and the glue is ensured not to flow out along the gap between the rotating shaft 4 and the bearing as far as possible.

Preferably, in the encoder provided in embodiment 1, as shown in fig. 1, the inner wall of the mounting cavity 11 extends inward to form a step-shaped protrusion 110; the inner diameter of the boss 110 is smaller than the outer ring diameter of the first bearing 2 and the second bearing 3; the inner diameter of the boss 110 is larger than the inner ring diameter of the first bearing 2 and the second bearing 3; the inner wall of the boss 110 has a certain distance from the outer surface of the rotation shaft 4. In this embodiment 1, the first bearing 2 and the second bearing 3 respectively abut against two sides of the protruding portion 110, the protruding portion 110 separates the first bearing 2 from the second bearing 3, the protruding portion 110 can limit the axial displacement of the first bearing 2 and the second bearing 3, and the axial displacement of the rotating shaft 4 is limited by the first bearing 2 and the second bearing 3, so that the situation that the encoder fails due to the falling of the rotating shaft 4 or the bearing can be effectively prevented.

Preferably, the shaft 4 is formed as a one-piece structure. The rotating shaft 4 can be formed by casting, and the like, and is simple in integrated structure, convenient to manufacture and good in mechanical property.

The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or any other related technical fields, are included in the scope of the present invention.

Claims

1. An encoder is characterized by comprising an encoder main body, a first bearing, a second bearing and a rotating shaft; an installation cavity is formed in the encoder main body; the mounting cavity is arranged in a cylindrical shape; the mounting cavity axially penetrates through the encoder main body; the first bearing and the second bearing are respectively arranged at two sides of the interior of the mounting cavity; the first bearing and the second bearing are coaxially arranged; the rotating shaft penetrates through the mounting cavity and penetrates through the first bearing and the second bearing; the inner ring of the first bearing and the inner ring of the second bearing can rotate along with the rotating shaft;

two glue grooves are formed in the outer surface of the rotating shaft; the glue groove is annularly arranged along the outer surface of the rotating shaft; the inner walls of the first bearing and the second bearing respectively cover the notches of the two glue tanks.

2. The encoder of claim 1, wherein the glue groove has a rectangular or circular arc cross-section.

3. The encoder as claimed in claim 2, wherein the glue tank is in smooth transition connection with the outer surface of the rotating shaft.

4. The encoder of claim 1, wherein an outer surface of the shaft abuts an inner wall of the first bearing and an inner wall of the second bearing.

5. The encoder of claim 1, wherein an inner wall of the mounting cavity extends inwardly with a stepped boss; the inner diameter of the boss is smaller than the outer ring diameter of the first bearing and the second bearing; the inner diameter of the boss is larger than the diameters of the inner rings of the first bearing and the second bearing; the inner wall of the protruding part and the outer surface of the rotating shaft have a certain distance.

6. The encoder of claim 1, wherein the shaft is formed as a unitary structure.