WO2021056886A1

WO2021056886A1 - Installation structure for split encoder

Info

Publication number: WO2021056886A1
Application number: PCT/CN2019/127807
Authority: WO
Inventors: 鄢鹏飞
Original assignee: 浙江禾川科技股份有限公司
Priority date: 2019-09-29
Filing date: 2019-12-24
Publication date: 2021-04-01
Also published as: CN110514232A

Abstract

An installation structure for a split encoder, the structure comprising a housing (1), an encoder rotating shaft (2), a first limiting member (3) and a second limiting member (4); the encoder rotating shaft (2) is installed within the housing (1); an inner side wall of the housing (1) is provided with a first limiting stop (5) used for being clampingly connected to an end of the first limiting member (3), and a first limiting hole that matches a front end of the first limiting member (3) is provided on a side wall of the encoder rotating shaft (2); and the inner side wall of the housing (1) is provided with a second limiting stop (6) used for being clampingly connected to an end of the second limiting member (4), and a second limiting hole that matches a front end of the second limiting member (4) is provided on the side wall of the encoder rotating shaft (2). The first limiting member (3) and the second limiting member (4) are used to limit the rotation direction and axial movement of the encoder rotating shaft (2) so as to ensure that a code disk and so on will not touch other parts, thus avoiding damage during installation, while ensuring the level of visibility of a locking jack screw, and facilitating the installation of the encoder.

Description

Installation structure of split type encoder

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on September 29, 2019, the application number is 201910931362.5, and the invention title is "a split encoder mounting structure", the entire content of which is incorporated into this application by reference in.

Technical field

The invention relates to the technical field of sensors, in particular to a split encoder installation structure.

Background technique

Encoders are generally speed and displacement sensors, and they are one of the most widely used sensors. At present, the conventional split-type encoder structure mainly includes the main body, PCB board, light source, encoder shaft, code disc, and magnet steel. Different from the overall installation of the integral encoder, the split encoder needs to install these components one by one, the assembly is more complicated, and the requirements for the installation environment are more stringent.

At present, conventional split encoders are generally divided into two parts, one part is the rotor structure installed on the motor shaft, such as encoder shaft, code disc holder, etc., and the other part is fixed on the back end cover of the motor, such as the encoder Main body, light source, PCB board, etc.

Most of the current code discs are made of glass or epoxy resin. When the split encoder is installed, these parts of the encoder are assembled separately, which is complicated to install, and it is easy to cause damage to the code disc, pollution of the code disc, and component damage. Bumping, etc., can cause the encoder accuracy to decrease, or cause the encoder to stop working and the motor runaway.

Therefore, how to enhance the assembly stability of the split encoder is an urgent technical problem to be solved by those skilled in the art.

Summary of the invention

The purpose of the present invention is to provide a split encoder installation structure, which can simplify the assembly process, avoid damage to the code disc, components and the like during the installation process, and improve the safety and reliability of the encoder.

In order to solve the above technical problems, the present invention provides a split encoder mounting structure, which includes a housing, an encoder shaft, a first limiting member and a second limiting member, the encoder shaft is installed in the housing, The inner side wall of the housing is provided with a first limiting stop for engaging with the end of the first limiting member, and the side wall of the encoder shaft is provided with a first limiting member The front end of the housing is fitted with a first limiting hole, the inner side wall of the housing is provided with a second limiting stop for clamping with the end of the second limiting member, and the side wall of the encoder shaft A second limiting hole matched with the front end of the second limiting member is opened.

Preferably, the outer side of the housing is provided with a first notch corresponding to the first limit stop, and the outer side of the housing is also provided with a second groove corresponding to the second limit stop. mouth.

Preferably, the opening direction of the first notch is opposite to the opening direction of the second notch.

Preferably, it further includes a third limiting member arranged on the side wall of the encoder shaft, and the third limiting member and the second limiting member are distributed at an angle of 90°.

Preferably, the included angle between the first limiting hole and the second limiting hole is 90°.

Preferably, the first limiting member and the second limiting member are both top wires.

Preferably, the first limiting hole and the second limiting hole are both internally threaded holes that cooperate with the top wire.

Preferably, a mounting screw is provided on the outer circumference of the housing and penetrating the housing.

The split encoder installation structure provided by the present invention mainly includes a housing, an encoder shaft, a first limiting member and a second limiting member. The encoder shaft is installed in the housing, and the inner side wall of the housing is provided with The end of the first limiting member is clamped with the first limiting stop, and the side wall of the encoder shaft is provided with a first limiting hole that is matched with the front end of the first limiting member, and the inner side wall of the housing is provided with a useful A second limiting stop is clamped with the end of the second limiting member, and a second limiting hole is formed on the side wall of the encoder shaft to cooperate with the front end of the second limiting member. The split encoder installation structure provided by the present invention restricts the rotation direction and axial movement of the encoder shaft through the first and second limiters, so as to ensure that the code disc and the like will not touch other parts. Avoid damage during installation.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only It is an embodiment of the present invention. For those of ordinary skill in the art, without creative work, other drawings can be obtained according to the provided drawings.

FIG. 1 is a schematic diagram of the overall structure of a specific embodiment provided by the present invention;

Figure 2 is a top view of the structure shown in Figure 1;

Figure 3 is a cross-sectional view of the A-A section shown in Figure 2;

Fig. 4 is a schematic diagram of the bottom of the housing shown in Fig. 1.

Among them, in Figure 1 to Figure 4:

Shell-1, encoder shaft-2, first limit piece-3, second limit piece-4, first limit stop port-5, second limit stop port-6, first slot- 7. The second notch—8, the mounting screw—9, and the third stopper—10.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

Please refer to FIGS. 1 to 3. FIG. 1 is a schematic diagram of the overall structure of a specific embodiment provided by the present invention; FIG. 2 is a top view of the structure shown in FIG. 1; FIG. 3 is a cross-sectional view of A-A shown in FIG.

In a specific implementation provided by the present invention, the split encoder mounting structure mainly includes a housing 1, an encoder shaft 2, a first limiting member 3, and a second limiting member 4. The encoder shaft 2 is mounted on In the housing 1, the inner side wall of the housing 1 is provided with a first limit stop 5 for engaging with the end of the first limit member 3, and the side wall of the encoder shaft 2 is provided with a first limit stop 5 The front end of the part 3 is matched with the first limit hole, the inner side wall of the housing 1 is provided with a second limit stop 6 for clamping with the end of the second limit part 4, and the side wall of the encoder shaft 2 A second limiting hole is formed to cooperate with the front end of the second limiting member 4.

Wherein, the encoder shaft 2 is installed in the housing 1, the inner side wall of the housing 1 is provided with a first limiting stop 5 for engaging with the end of the first limiting member 3, and the side wall of the encoder shaft 2 A first limiting hole is opened on the top to cooperate with the front end of the first limiting member 3, and the inner side wall of the housing 1 is provided with a second limiting stop 6 for engaging with the end of the second limiting member 4, and The side wall of the encoder shaft 2 is provided with a second limiting hole which is matched with the front end of the second limiting member 4; the first limiting stop 5 is used for installing the first limiting member 3, the first limiting member 3 It is used to limit the upward movement of the encoder shaft 2, the second limit stop 6 is used to install the second limit piece 4, and the second limit piece 4 is used to limit the encoder shaft 2 to move down.

Specifically, in the actual installation process, the encoder shaft 2 is fixed to the first limit stop 5 through the first limit member 3, but the first limit member 3 should not be completely screwed into the first limit stop 5 , And then put the encoder shaft 2 into the encoder housing 1. At this time, the first limit member 3 is constrained by the first limit stop 5 below, and the encoder shaft 2 can no longer move upward. The limiting member 3 is restricted by the first limiting stop 5 and cannot be rotated. At this time, the second limiting member 4 is aligned with the second limiting stop 6, and the second limiting member 4 is screwed from the side or bottom surface The encoder shaft 2 is also not completely screwed in, and the second limit member 4 is restricted by the second limit stop 6, making the encoder shaft 2 unable to move down; the encoder shaft 2 is subject to two limit stops The restriction of the port, combined with the small gap between the encoder shaft 2 and the housing 1, makes the rotation direction and axial movement of the encoder shaft 2 constrained, and then tighten the first limiter 3 and the second limiter from the side Step 4 can complete the installation.

In order to optimize the advantages of convenient and stable installation of the split encoder installation structure in the above embodiment, the outer side of the housing 1 is provided with a first notch 7 corresponding to the first limit stop 5, and the outer side of the housing 1 is also provided with The second notch 8 corresponding to the second limit stop 6. A first notch 7 and a second notch 8 are provided at the first limit stop 5 and the second limit stop 6 respectively. In order to install the first limit piece 3 and the second limit piece 4, the first The limiting member 3 and the second limiting member 4 are screwed to the first notch 7 and the second notch 8 respectively, and then not completely tightened. The first limiting notch 5 and the second limiting notch 6 respectively limit the first The first limit piece 3 and the second limit piece 4 limit the rotation direction and axial movement of the encoder shaft 2 to ensure that the encoder will not touch other parts, avoid damage during the installation process, and at the same time ensure The visual layering of the top lock wire makes it easier to install the encoder.

Please refer to FIG. 4, which is a schematic diagram of the bottom of the housing shown in FIG. 1.

It should also be noted that a third limiting member 10 is also installed on the encoder shaft 2. The front end of the third limiting member 10 is inserted into the encoder shaft 2, and the end of the third limiting member 10 is clamped on the encoder shaft 2. On the housing 1, the third limiting member 10 and the second limiting member 4 are installed at 90° along the circumferential direction of the encoder shaft 2. At the same time, the limit stop and the notch setting of the third limit member 10 are the same as the first notch 7 and the second notch 8 of the first limit member 3, that is, the first limit member 3 and the third The limiting member 10 is symmetrically distributed along the circumferential direction of the encoder shaft 2, and the second limiting member 4 is located between the first limiting member 3 and the third limiting member 10, so that the encoder shaft 2 is affected by the first limiting member 3 and The third limiting member 10 restricts the encoder shaft 2 from moving upwards, while the second limiting member 4 effectively restricts the encoder shaft 2 from moving downwards. Therefore, the encoder shaft 2 is embedded in the housing 1 After that, the first limiting member 3 and the second limiting member 4 are installed on the third limiting member 10 to limit the rotation and axial movement of the encoder shaft 2.

Further, the opening direction of the first notch 7 is opposite to the opening direction of the second notch 8; the angle between the first limiting hole and the second limiting hole is 90°. Because in the installation process, it is the first limit stop 5 and the second limit stop 6 that limit the rotation direction and axial movement of the encoder shaft 2 while the first limit stop 5 and the second limit stop The stop 6 is restricted by the first notch 7 and the second notch 8 respectively. Therefore, when the rotation direction and axial movement of the encoder shaft 2 are restricted, the openings of the first notch 7 and the second notch 8 If the direction is opposite, it can play the role of restriction in the opposite direction, so that the first limit stop 5 and the second limit stop can more fully restrict the rotation direction and axial movement of the encoder shaft 2. Of course, the above-mentioned first limiting member 3 and the second limiting member 4 or the second limiting member 4 and the third limiting member 10 can also be designed in other forms of angle distribution, for example, the first limiting member 3 and The included angle between the second limiting member 4 is 60°, and the included angle between the second limiting member 4 and the third limiting member 10 is 60° or other angles. The angle design between the first limiting member 3, the second limiting member 4, and the third limiting member 10 is not limited to the above-mentioned situation, and can also be adjusted and selected according to the needs of the housing design.

Further, the first limiting member 3, the second limiting member 4, and the third limiting member 10 are all top threads; the first limiting hole and the second limiting hole are both internally threaded holes matched with the top thread. The original intention of this application is to make the encoder installation process simple and fast, and the coordinated installation form of the top wire and the internal thread only requires the installer to manually tighten the top wire to limit the movement of the encoder shaft 2, which is very simple and fast. In addition, the top wire and the internal threaded hole are easy to process, and the production cost is low, which reduces the installation cost of the encoder.

Further, a mounting screw 9 is provided on the outer periphery of the housing 1 and penetrates the housing 1. After adjusting the installation position of the encoder shaft 2, the housing 1 is locked and fixed by the mounting screw 9 penetrating the housing 1, and then the first limiting member 3 and the second limiting member 4 are tightened from the side. Installation, installation is quick and simple.

In summary, the split encoder installation structure provided by this embodiment mainly includes a housing, an encoder shaft, a first limiting member and a second limiting member. The encoder shaft is installed in the housing and the inner side of the housing The wall is provided with a first limiting stop for clamping with the end of the first limiting member, and the side wall of the encoder shaft is provided with a first limiting hole that matches with the front end of the first limiting member. The inner side wall is provided with a second limiting stop for clamping with the end of the second limiting member, and the side wall of the encoder shaft is provided with a second limiting hole that is matched with the front end of the second limiting member. The split encoder installation structure provided by the present invention restricts the rotation direction and axial movement of the encoder shaft through the first and second limiters, so as to ensure that the code disc and the like will not touch other parts. Avoid damage during the installation process, and at the same time ensure the visual layering of the top lock wire, making it easier to install the encoder.

The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown in this document, but should conform to the widest scope consistent with the principles and novel features disclosed in this document.

Claims

A split encoder installation structure, which is characterized in that it comprises a housing (1), an encoder shaft (2), a first limiting member (3) and a second limiting member (4). The encoder shaft (2) Installed in the housing (1), the inner side wall of the housing (1) is provided with a first limit stop ( 5), and the side wall of the encoder shaft (2) is provided with a first limiting hole matching the front end of the first limiting member (3), and the inner side wall of the housing (1) is provided with a first limiting hole There is a second limit stop (6) used for clamping with the end of the second limit member (4), and the side wall of the encoder shaft (2) is provided with a second limit stop The front end of the piece (4) is matched with a second limiting hole.
The split encoder installation structure according to claim 1, characterized in that a first notch (7) corresponding to the first limit stop (5) is opened on the outer side of the housing (1) A second notch (8) corresponding to the second limit stop (6) is also opened on the outer side of the housing (1).
The split encoder mounting structure according to claim 2, wherein the opening direction of the first slot (7) is opposite to the opening direction of the second slot (8).
The split encoder mounting structure according to claim 3, further comprising a third limiting member (10) arranged on the side wall of the encoder shaft (2), the third limiting The part (10) and the second limiting part (4) are distributed at an angle of 90°.
The split encoder mounting structure according to claim 4, wherein the angle between the first limiting hole and the second limiting hole is 90°.
The split encoder installation structure according to claim 5, characterized in that the first limiting member (3), the second limiting member (4) and the third limiting member (10) All are top wire.
The split encoder mounting structure according to claim 6, wherein the first limiting hole and the second limiting hole are both internally threaded holes that cooperate with the top wire.
The split encoder mounting structure according to claim 1, wherein a mounting screw (9) is provided on the outer circumference of the housing (1) and penetrating the housing (1).