CN219141858U

CN219141858U - Photoelectric encoder for debugging optical department

Info

Publication number: CN219141858U
Application number: CN202320037997.2U
Authority: CN
Inventors: 张伟伟
Original assignee: Zhejiang Bojia Industrial Automation Co ltd
Current assignee: Zhejiang Bojia Industrial Automation Co ltd
Priority date: 2023-01-07
Filing date: 2023-01-07
Publication date: 2023-06-06
Anticipated expiration: 2033-01-07

Abstract

The utility model discloses a photoelectric encoder for debugging an optical department, which comprises a shell and a base arranged below the base, wherein a circuit board, a code disc and a light-emitting element are sequentially arranged between the base and the shell from top to bottom, a connecting shaft is arranged in the center of the code disc in a penetrating manner, the light-emitting element is arranged on the base through a threaded fastener, two annular grooves are arranged on the connecting shaft, the code disc is sleeved at the middle of the two grooves, a retaining ring for preventing the connecting shaft from being separated from the code disc downwards is embedded in the groove above, an opening retainer ring for preventing the code disc from being separated from the code disc upwards is embedded in the groove below, and a disc support which is attached to the code disc above is also arranged at the center of the base. According to the photoelectric encoder provided by the utility model, the retaining ring and the split retaining ring are arranged on the connecting shaft, so that the connection stability of the connecting shaft and the shell is improved; a tray support for supporting the code disc is arranged below the code disc of the photoelectric encoder, so that the stability of the code disc is further improved.

Description

Photoelectric encoder for debugging optical department

Technical Field

The utility model belongs to the technical field of encoders, and particularly relates to a photoelectric encoder.

Background

The photoelectric encoder is a rotation angle detection device, which is used for inputting the external angle to the shaft of the photoelectric encoder, converting the external angle into corresponding electric pulse or digital quantity by utilizing the photoelectric conversion principle, and is widely applied to devices and equipment which need to detect the rotation angle or rotation speed, such as numerical control machine tools, rotary tables, servo transmission, robots, radars, military target measurement and the like.

The photoelectric encoder comprises a shell and a base, wherein a connecting shaft, a circuit board and a code disc are arranged between the shell and the base, the connecting shaft is positioned at the center of the shell and the base, a photosensitive element is arranged on the circuit board and used for converting received light into an electronic signal, and a light-emitting element arranged on the base is arranged beside the code disc and used for emitting the light signal.

Through practical use, the prior photoelectric encoder has the following defects: the center of the photoelectric encoder depends on the connection positioning of the connecting shaft, and the connecting shaft in the existing photoelectric encoder lacks a corresponding limiting structure, so that the internal structure of the photoelectric encoder is not stable enough; the center of the code wheel lacks support.

Disclosure of Invention

Aiming at the problem that the internal structure of the existing photoelectric encoder is not stable enough, the following utility model is proposed:

the utility model provides a photoelectric encoder, includes the casing and installs in the base of base below, be equipped with circuit board, code wheel, light emitting component from top to bottom in proper order between base and the casing, the center department of code wheel runs through and is equipped with the connecting axle, light emitting component passes through threaded fastener and installs on the base, be equipped with two annular recesses on the connecting axle, the code wheel cover is located two recess intermediate departments, and the recess of top is embedded to have and places the retaining ring that prevents the connecting axle to break away from the code wheel downwards, and the recess of below is embedded to be equipped with the split washer that prevents the code wheel upwards breaks away from the code wheel. The connecting shaft is provided with a corresponding limiting structure, so that the stability of the connecting shaft in the photoelectric encoder is improved, and the connecting shaft is prevented from being separated from the shell.

Further, install a plurality of vertical copper stands on the base, be equipped with on the circuit board with stand matched with breach. The copper upright post is convenient for positioning the circuit board when the circuit board is installed.

Further, the connecting shaft is also sleeved with at least one bearing positioned below the code wheel, and the connecting shaft can rotate in the center of the bearing.

Further, a cylindrical groove is formed in the center of the base, a tray support located below the code disc is installed in the groove, and the tray support can provide corresponding support for the center of the code disc.

Further, two bearings are arranged, the upper bearing is located between the code disc and the disc tray, the lower bearing is located below the disc tray, and the plurality of bearings improve the fluency of rotation of the connecting shaft.

Advantageous effects

According to the photoelectric encoder provided by the utility model, the retaining rings and the split retaining rings are arranged above and below the connecting shaft, so that the stability of the connecting shaft in the photoelectric encoder is improved; a tray support for supporting the code disc is arranged below the code disc of the photoelectric encoder, so that the stability of the code disc is further improved.

Drawings

Fig. 1 is a schematic diagram of a split structure of an optical-electrical encoder according to the present utility model.

The correspondence between the reference numerals and the component names in the drawings is as follows:

1. a housing; 2. a connecting shaft; 3. a bearing; 4. a circuit board; 5. a light emitting element; 6. a code wheel; 7. a base; 21. a split retainer ring; 22. a retaining ring; 31. copper upright posts; 61. fixing a jackscrew; 62. and a tray.

Detailed Description

The technical scheme of the present utility model will be clearly and completely described in the following examples.

It will be apparent that the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments, based on the embodiments herein, which would be apparent to one of ordinary skill in the art without undue burden are within the scope of the present application.

As shown in fig. 1, the photoelectric encoder is a preferred photoelectric encoder of the present utility model, and comprises a housing 1 and a base 7, wherein the housing 1 is of a waterproof design, so that most of external water vapor can be prevented from entering the housing 1, a cylindrical groove is formed in the center of the base 7 and is installed below the housing 1, a cavity with an opening is formed between the base 7 and the housing 1, a circuit board 4, a code disc 6 and a light emitting element 5 are arranged in the cavity, the circuit board 4 is installed above the code disc 6 through a threaded connector, a corresponding photosensitive element is arranged on the circuit board 4, a circular opening is formed in the center of the code disc 6, a connecting shaft 2 is inserted into the circular opening, one end of the connecting shaft 2 is located between the circuit board 4 and the code disc 6, the other end of the connecting shaft is inserted into the base 7, and the light emitting element 5 is installed on the base 7 through the threaded connector and is internally provided with a common luminotron and a red luminotron.

The connecting shaft 2 is provided with an upper annular groove and a lower annular groove, the upper groove is positioned between the circuit board 4 and the code disc 6, a retaining ring 22 is embedded in the groove, a plurality of tooth-shaped structures are arranged on the inner side of the retaining ring 22 to clamp the groove, the outer ring radius of the retaining ring 22 is larger than the radius of the central circular opening of the code disc 6, so that the connecting shaft 2 is prevented from separating from the space between the code disc 6 and the circuit board 4, the lower groove is embedded with an opening retainer ring 21, and the radius of the opening retainer ring 21 is also larger than the diameter of the central circular opening of the code disc 6, so that the connecting shaft 2 is prevented from separating from the code disc 6. According to the utility model, the retaining ring 22 and the split retaining ring 21 are arranged on the connecting shaft 2, so that the connecting shaft 2 is ensured to be always connected to the code wheel 6, and the stability of the connecting shaft 2 in the photoelectric encoder is improved.

In this embodiment, three copper columns 31 extending vertically upward are mounted on the base 7, notches matched with the copper columns 31 are formed on the side portions of the circuit board 4, and the radius of the code wheel 6 is smaller than that of the circuit board 4 and cannot contact with the copper columns 31. The copper posts 31 facilitate positioning of the circuit board 4 during installation.

In this embodiment, a tray support 62 attached to the bottom of the code wheel 6 is mounted in a groove at the center of the base 7, a cylindrical groove sleeved by the connecting shaft 2 is provided at the center of the tray support 62, the tray support 62 is connected with the housing 1 through a fixing jackscrew 61 provided on the side, and the tray support 62 provides supporting force for the code wheel 6 from below

In this embodiment, the connecting shaft 2 is further sleeved with two bearings 3, the connecting shaft 2 can rotate at the center of the bearings 3, the upper bearings 3 separate the code disc 6 from the disc support 62 and are attached to the code disc 6 and the disc support 62, the lower bearings 3 are embedded in grooves of the base 7 below the disc support 62 and are attached to the lower portion of the disc support 62, and the arrangement of the bearings 3 facilitates the connecting shaft 2 to connect with external equipment and rotate relative to the body of the photoelectric encoder.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a photoelectric encoder, includes casing (1) and installs in base (7) of base (7) below, be equipped with circuit board (4), coded disc (6), light emitting component (5) from top to bottom in proper order between base (7) and casing (1), the center department of coded disc (6) runs through and is equipped with connecting axle (2), light emitting component (5) are installed on base (7) through threaded fastener, its characterized in that: the connecting shaft (2) is provided with two annular grooves, the code disc (6) is sleeved at the middle of the two grooves, a retaining ring (22) for preventing the connecting shaft (2) from being separated from the code disc (6) downwards is embedded in the groove above the two grooves, and an opening check ring (21) for preventing the code disc (6) from being separated from the code disc (6) upwards is embedded in the groove below the two grooves.

2. The photoelectric encoder of claim 1, wherein: a plurality of vertical copper stand columns (31) are arranged on the base (7), and notches matched with the through stand columns are formed in the circuit board (4).

3. The photoelectric encoder of claim 1, wherein: the connecting shaft (2) is also sleeved with at least one bearing (3) positioned below the code disc (6).

4. A photoelectric encoder according to claim 3, wherein: a cylindrical groove is formed in the center of the base (7), and a tray support (62) attached to the lower portion of the code disc (6) is arranged in the groove.

5. The photoelectric encoder of claim 4, wherein: the two bearings (3) are arranged, the upper bearing (3) is positioned between the code disc (6) and the disc tray (62) to separate the code disc from the disc tray, and the lower bearing (3) is positioned in the central groove of the base (7) below the disc tray (62).