Small flexible connection optical encoder

Abstract

The utility model relates to the technical field of encoders, in particular to a small flexible connection optical encoder, which comprises an encoder lower cover, a main shaft capable of rotating circumferentially is mounted in the encoder lower cover through two bearings, a glass code disc is placed at the top end of the main shaft, and the glass code disc and the encoder lower cover are mutually covered; a lamp sleeve is mounted on one side of the bottom of the encoder lower cover; the surface of the bottom of the encoder lower cover is connected with an elastic support. A PCBA is installed on the surface of the encoder lower cover. Flexible connection between the encoder and the motor is achieved through the elastic support, the requirement for precision of an installation position is low, the light source is fixed in the mode of a common light source and a lamp holder, light sources of different models can be replaced very conveniently, and a die of a lamp does not need to be changed correspondingly.

Description

Technical Field

[0001] The utility model relates to the technical field of encoders, in particular to a small flexible connection optical encoder. Background Technique

[0002] Most of the existing small optical encoders adopt a rigid connection method in which the encoder body and the motor are directly locked by screws, which has high requirements for the installation surface. When the installation surface is inclined, sunken, protruding, or has a notch, the installation will be affected to a certain extent, thus affecting the normal operation of the encoder.

[0003] The light-emitting component of the light source and the installation part are integrated. When it is necessary to adjust the model of the light source, it needs to be adjusted during the production of the light source, which is not convenient enough. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a small flexible connection optical encoder to solve the problem that the existing encoder body and the motor are both rigidly connected by screws and are not convenient enough to adjust in the above-mentioned background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A small flexible connection optical encoder, including an encoder lower cover, a main shaft that can rotate circumferentially is installed inside the encoder lower cover through two bearings, a glass code disk is placed at the top of the main shaft, and the glass code disk and the encoder lower cover are covered with each other; a lamp sleeve is installed on one side of the bottom of the encoder lower cover; an elastic bracket is connected to the surface of the bottom of the encoder lower cover; a PCBA is installed on the surface of the encoder lower cover.

[0006] Preferably, a dust-proof cap is installed on the surface of the PCBA, and the dust-proof cap and the PCBA are in interference fit with each other. The dust-proof cap is used to prevent dust from entering the inside of the encoder during transportation or work.

[0007] Preferably, a light source is fixed on the surface of the lamp sleeve.

[0008] Preferably, three groups of through holes are opened on the surface of the PCBA, and when the PCBA and the encoder lower cover are covered, bolts pass through the through holes and are threadedly fixed to the surface of the encoder lower cover.

[0009] Preferably, two screws are threadedly connected to the surface of the elastic bracket, and the screws pass through the elastic bracket and are threadedly fixed to the surface of the encoder lower cover.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows: The small flexible connection optical encoder is provided with an elastic bracket. During implementation, the elastic bracket and the encoder are locked with screws, and the encoder as a whole is connected to the motor by means of the elastic bracket. The elasticity of the elastic bracket can well adapt to the geometric differences between the encoder and the motor. The present utility model adopts two small bearings, and the overall structure is more compact with a small volume. By using an elastic bracket, the installation connection becomes flexible and can withstand a greater installation position error. The light source and the installation position are separated, making it more convenient to replace the light source. In summary, a small absolute value optical encoder with flexible connection utilizes an elastic bracket to achieve flexible connection between the encoder and the motor, has a lower requirement for the accuracy of the installation position, adopts the form of a common light source + lamp holder to fix the light source, and can very conveniently replace light sources of different models without the need to modify the mold for the lamp according to corresponding changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 FIG. is a schematic structural diagram of the present utility model in the upright state;

[0012] Figure 2 FIG. is an exploded structural diagram of the present utility model;

[0013] Figure 3 FIG. is a schematic structural diagram of the present utility model in the inverted state.

[0014] In the figure: 1, dust cap; 2, PCBA; 3, glass code disk; 4, main shaft; 5, bearing; 6, encoder lower cover; 7, lamp sleeve; 8, light source; 9, elastic bracket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. In addition, the terms "first", "second", "third", "upper, lower, left, right", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. At the same time, in the description of the present utility model, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0016] The structure of a small flexible connection optical encoder provided by the present utility model is as Figure 1 and Figure 2As shown in the figure, it includes the encoder lower cover 6. Inside the encoder lower cover 6, a circumferentially rotatable main shaft 4 is installed through two small bearings 5. A glass code disk 3 is placed at the top of the main shaft 4, and the glass code disk 3 and the encoder lower cover 6 are covered with each other.

[0017] During implementation, the glass code disk 3, the main shaft 4, and the bearings 5 form the main moving mechanical structure of the entire encoder and are together installed into the bearing holes of the encoder lower cover 6.

[0018] Further, as Figure 2 and Figure 3 shown in the figure, a lamp sleeve 7 is installed on one side of the bottom of the encoder lower cover 6, and a light source 8 is fixed on the surface of the lamp sleeve 7; an elastic bracket 9 is connected to the surface of the bottom of the encoder lower cover 6. Three groups of through holes are opened on the surface of the PCBA 2. When the PCBA 2 and the encoder lower cover 6 are covered, bolts pass through the through holes and are threadedly fixed to the surface of the encoder lower cover 6. Two screws are threadedly connected to the surface of the elastic bracket 9, and the screws pass through the elastic bracket 9 and are threadedly fixed to the surface of the encoder lower cover 6; the PCBA 2 is installed on the surface of the encoder lower cover 6, and a dust cap 1 is installed on the surface of the PCBA 2, and the dust cap 1 and the PCBA 2 are in interference fit with each other. The dust cap 1 is used to prevent dust from entering the inside of the encoder during transportation or operation.

[0019] During implementation, after combining the lamp sleeve 7 and the light source 8, they are installed into the corresponding installation position of the encoder lower cover 6; then the elastic bracket 9 is directly connected to the encoder lower cover 6, and the PCBA 2 contacts and is installed and fixed to the upper surface of the encoder lower cover 6 to receive optical signals. Subsequently, the dust cap 1 is installed in the through hole in the middle of the PCBA 2 to prevent dust from entering the encoder during transportation or operation.

[0020] Working principle: When in use, the glass code disk 3, the main shaft 4, and the bearings 5 form the main moving mechanical structure of the entire encoder and are together installed into the bearing holes of the encoder lower cover 6; then after combining the lamp sleeve 7 and the light source 8, they are installed into the corresponding installation position of the encoder lower cover 6; subsequently, the elastic bracket 9 is directly connected to the encoder lower cover 6, and then the PCBA 2 contacts and is installed and fixed to the upper surface of the encoder lower cover 6 to receive optical signals; finally, the dust cap 1 is installed in the through hole in the middle of the PCBA 2 to prevent dust from entering the encoder during transportation or operation.

[0021] When installing the encoder, the elastic bracket 9 and the encoder are locked with screws, and the entire encoder is connected to the motor by means of the elastic bracket 9. The elasticity of the elastic bracket 9 can well adapt to the form and position differences between the encoder and the motor.

[0022] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A small flexible optical encoder, comprising an encoder lower cover (6), characterized in that: A main shaft (4) capable of circumferential rotation is installed inside the encoder lower cover (6) via two bearings (5); a glass code disk (3) is placed on the top of the main shaft (4), and the glass code disk (3) and the encoder lower cover (6) overlap each other; a lamp cover (7) is installed on one side of the bottom of the encoder lower cover (6); an elastic bracket (9) is connected to the surface of the bottom of the encoder lower cover (6); and a PCBA (2) is installed on the surface of the encoder lower cover (6).

2. A small flexible connection optical encoder according to claim 1, characterized in that: A dust cap (1) is installed on the surface of the PCBA (2), and the dust cap (1) and the PCBA (2) are interference-fitted with each other. The dust cap (1) is used to prevent dust from entering the interior of the encoder during transportation or operation.

3. A small flexible connection optical encoder according to claim 1, characterized in that: A light source (8) is fixed on the surface of the lamp cover (7).

4. A small flexible connection optical encoder according to claim 1, characterized in that: The surface of the PCBA (2) is provided with three groups of through holes, and when the PCBA (2) and the encoder lower cover (6) are covered, bolts penetrate the through holes and are threadedly fixed to the surface of the encoder lower cover (6).

5. A small flexible connection optical encoder according to claim 1, characterized in that: The surface of the elastic bracket (9) is threadedly connected to two screws, and the screws penetrate the elastic bracket (9) and are threadedly fixed to the surface of the encoder lower cover (6).

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