Assembly structure capable of reducing rotation noise of encoder

Abstract

The utility model discloses an assembly structure capable of reducing rotation noise of an encoder, which comprises a roller and a rotor, the roller is provided with a connecting column, and a connecting hole is arranged in the rotor; a plurality of elastic arms are arranged at the edge of the connecting hole in the rotor, a gap is formed between every two adjacent elastic arms to form an elastic structure capable of deforming inwards and outwards, and the hole wall of the front half part of the connecting hole is defined by the elastic arms; after the connecting column is inserted into the connecting hole, the elastic arms are extruded outwards so that the elastic arms can be tightly hooped on the surface of the connecting column, so that the connecting column of the roller can be in interference fit with the connecting hole of the rotor, and after the connecting column is inserted into the connecting hole, the elastic arms can be pressed to expand outwards, so that the connecting column can be easily mounted into the connecting hole of the rotor; and after being mounted, the elastic arm can tightly hoop the connecting arm, so that the elastic arm and the connecting arm are in a close-fitting state, and the problem of noise generated during rotation of the roller is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic fittings technical field especially relates to an installation structure that can reduce encoder rotation noise. BACKGROUND

[0002] Encoder is the device that signal or data is arranged, conversion is signal form available to communication, transmission and storage, and the roller encoder is the angular displacement displacement conversion into electric signal, and it is widely used in various electronic and electrical equipment. As a typical structure, the encoder on the market usually gives the roller six square column as the connecting column, and the rotor in the needle holder is provided with six square hole matched with the six square column as the connecting hole, and the hole wall of the six square hole is the integral solid wall. When the six square column and the six square hole are interference fit, although it has the advantages of stable assembly, small shaking and small noise, but it is difficult to assemble, time-consuming and laborious. When the six square column and the six square hole adopt clearance fit, although the six square column can be more easily assembled into the six square hole, but due to the existence of the clearance, the roller shakes greatly, and the roller encoder emits a loud noise when rolling. SUMMARY

[0003] The utility model provides a kind of assembly structure that can reduce encoder rotation noise, which is more reasonable in structure design, can make connecting column easily assembled into the connecting hole of rotor, and make connecting column and rotor fit closely, reduce encoder rotation noise, and is suitable for mechanical encoder, photoelectric encoder, electromagnetic encoder etc.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme: a kind of assembly structure that can reduce encoder rotation noise, including roller and rotor, the roller has connecting column, and the rotor is matched with spring piece and switch piece and is installed in needle holder, and the rotor and spring piece are covered with cover plate;Rotor is provided with connecting hole, and the roller is connected with the rotor by inserting connecting column into connecting hole, and the rotor is characterized by: a plurality of elastic arms are arranged in the rotor at the edge of the connecting hole, and the adjacent elastic arms have gaps to form an elastic structure that can deform inward and outward, and the hole wall of the front half of the connecting hole is surrounded by each elastic arm;After connecting column is inserted into connecting hole, each elastic arm is extruded outward to make each elastic arm tightly grip the surface of connecting column.

[0005] As preferred, the connecting column is a six square column, the connecting hole is a six square hole matched with the connecting column, and the space surrounded by each elastic arm is also a six square hole.

[0006] As preferred, the elastic arm includes 2-10, and each elastic arm is arranged at uniform intervals.

[0007] Further, the bottom end of each elastic arm is connected to the rotor as an integral structure.

[0008] Further, a groove is formed between the elastic arm outer side and the rotor body part, and an elastic member is arranged in the groove, which abuts against the outer side of the elastic arm to hoop the elastic arm.

[0009] Preferably, the elastic member is made of soft glue material, such as silica gel material.

[0010] Further, a plurality of fixing feet are arranged on the bottom surface of the rotor, and the switching piece is fixed by the fixing feet.

[0011] The utility model discloses a rotor for connecting the connecting hole of the connecting column of the roller, and the hole wall of the connecting hole is changed from the solid wall to the independent elastic arm, and the elastic arm has the gap between each other, and the thickness is smaller, so that the elastic arm has the elasticity and can be deformed, and the elastic arm can restore after deformation. The connecting column of the roller can be connected with the connecting hole of the rotor, and the elastic arm is pressed and opened outward after the connecting column is inserted into the connecting hole, so that the connecting column can be easily inserted into the connecting hole of the rotor, and the elastic arm can tightly hoop the connecting arm after being inserted, so that the connecting column and the connecting arm are in the tight fitting state, thereby solving the problem of noise generated when the roller rotates. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the overall structural drawing of the utility model;

[0013] Figure 2 It is the exploded view of the utility model;

[0014] Figure 3 It is the structure diagram of the elastic piece and the rotor assembly state;

[0015] Figure 4 It is the structure diagram of the elastic member and the rotor assembly state;

[0016] Figure 5 It is the structure diagram of the switching piece and the rotor assembly state;

[0017] Figure 6 It is the structure diagram of the utility model and the roller assembly state;

[0018] Figure 7 It is the cross-sectional structure diagram of the utility model and the roller assembly state;

[0019] Figure 8 It is the structure diagram of the second embodiment of the utility model;

[0020] Figure 9 It is the structure diagram of the third embodiment of the utility model;

[0021] Figure 10 It is the structure diagram of the fourth embodiment of the utility model;

[0022] Figure 11The utility model discloses a fifth embodiment structure diagram.

[0023] Figure 12 The utility model discloses a sixth embodiment structure diagram.

[0024] In the drawing, 1 is needle seat, 11 is code disc terminal, 12 is installation groove, 2 is cover plate, 3 is rotor, 31 is connecting hole, 32 is elastic arm, 33 is embedding groove, 34 is fixed foot, 4 is elastic piece, 5 is elastic sheet, 51 is elastic arm, 6 is switching sheet, 7 is roller, 71 is connecting column. DETAILED DESCRIPTION

[0025] In the embodiment, refer to Figures 1-7 A kind of assembly structure that can reduce the rotating noise of encoder, including roller 7 and rotor 3, roller 7 has connecting column 71, rotor 3 is equipped in the installation groove 12 of needle seat 1 with elastic sheet 5 and switching sheet 6, and using cover plate 2 covers rotor 3 and elastic sheet 5, the elastic arm 51 of elastic sheet 5 clamps the arc tooth portion of rotor 3, needle seat 1 has the code disc terminal 11 of extension;Rotor 3 is provided with connecting hole 31, by inserting connecting hole 31 with connecting column 71, roller 7 is connected with rotor 3;A plurality of elastic arms 32 are arranged in the position of the edge of connecting hole 31 in rotor 3, and gap is formed between adjacent elastic arms 32 to form the elastic structure that can be deformed inward and outward, i.e. elastic arm 32 can be pressed outward, also can restore inward, and the hole wall (the hole arm of the rear half of connecting hole 31 is solid wall) that is surrounded by each elastic arm 32 before half of connecting hole 31;After connecting column 71 is inserted into connecting hole 31, each elastic arm 32 is extruded outward, so that each elastic arm 32 is tightly clamped on the surface of connecting column 71, realizes interference fit, plays the effect of reducing noise, and also can prevent the connecting column 71 of roller 7 from causing "hold up" phenomenon due to excessive pressing force.

[0026] The connecting column 71 is hexagonal column, the connecting hole 31 is hexagonal hole matched with connecting column 71, and the space surrounded by each elastic arm 32 is also hexagonal hole.

[0027] The elastic arm 32 includes 2-10, such as 6, and each elastic arm 32 is arranged at uniform interval.

[0028] The bottom end of each elastic arm 32 is connected with rotor 3 as an integral structure, and has good toughness.

[0029] A set of embedding grooves 33 is formed between the outside of the elastic arms 32 and the main body of the rotor 3, and an elastic member 4 is installed in the embedding grooves 33, which abuts against the outside of each elastic arm 32 to hoop each elastic arm 32. This can not only make the noise reduction function more thorough during rolling, but also play a role in sound reduction and shock absorption, effectively prevent the excessive deformation of the elastic arms 32, and avoid the rolling wheel 7 from shaking. If the elastic member 4 is not provided, it is mainly applied to the scene with relatively low requirement for the mute function.

[0030] The elastic member 4 is made of soft glue material, and the use of silicon elastic member can provide better elasticity.

[0031] A plurality of fixing feet 34 are arranged on the bottom surface of the rotor 3, and the switching sheet 6 is fixed by the fixing feet 34.

[0032] In addition, Figure 2 , Figures 8-12 Respectively represent six different forms of embodiments of the elastic sheet 5, wherein, Figure 2 The elastic sheet 5 is integrally inserted into the needle seat 1 and clamped on both sides of the rotor 3 through the fixing column; Figure 8 The elastic sheet 5 is divided into two pieces and embedded in the needle seat 1 and clamped on both sides of the rotor 3 respectively; Figure 9 The elastic sheet 5 is integrally embedded in the needle seat 1 and clamped on both sides of the rotor 3; Figure 10 The elastic sheet 5 is divided into two pieces and clamped on both sides of the needle seat 1 and clamped on both sides of the rotor 3 respectively; Figure 11 The elastic sheet 5 is integrally inserted into the needle seat 1 and clamped on the surface of the rotor 3 through the fixing column; Figure 12 The elastic sheet 5 is embedded in the needle seat 1 and clamped on one side of the rotor 3. According to the actual needs, any one of the elastic sheet structures can be selected, and the final effect is the same.

[0033] The above has made a detailed description of the utility model, the above is only a preferred embodiment of the utility model, which cannot limit the scope of the utility model, that is, any equivalent changes and modifications made within the scope of the application shall still fall within the scope of the utility model.

Claims

1. An assembly structure for reducing encoder rotation noise, comprising a roller and a rotor, the roller having a connecting post, the rotor being mounted in a pin holder with a spring and a switching plate, and the rotor and the spring being covered by a cover plate; the rotor having a connecting hole, the roller being connected to the rotor by inserting the connecting post into the connecting hole, characterized in that: A plurality of elastic arms are arranged at the edge of the connecting hole in the rotor, gaps are formed between adjacent elastic arms to form an elastic structure capable of deforming inwardly and outwardly, and the hole wall of the front half of the connecting hole is formed by the elastic arms.

2. The assembly of claim 1, wherein: The connecting column is a hexagonal column, the connecting hole is a hexagonal hole matched with the connecting column, and the space surrounded by the elastic arms is also a hexagonal hole.

3. The assembly structure capable of reducing encoder rotation noise according to claim 1 or 2, characterized in that: The elastic arms include 2-10 elastic arms, and the elastic arms are arranged at uniform intervals.

4. The assembly of claim 1, wherein: The bottom end of each elastic arm is connected to the rotor in an integrated structure.

5. The assembly of claim 1, wherein: A groove is formed between the outer side of the elastic arm and the main body of the rotor, an elastic member is arranged in the groove, and the elastic member abuts against the outer side of each elastic arm to clamp the elastic arms.

6. The assembly of claim 5, wherein: The elastic member is made of soft rubber.

7. The assembly of claim 1, wherein: A plurality of fixing feet are arranged on the bottom surface of the rotor, and the switching piece is fixed by being inserted into the fixing feet.

Images