CN216554561U

CN216554561U - High-torque damping rubber shaft sleeve

Info

Publication number: CN216554561U
Application number: CN202123042750.XU
Authority: CN
Inventors: 干乃聪
Original assignee: Yuyao Zhenda Plastic Co ltd
Current assignee: Yuyao Zhenda Plastic Co ltd
Priority date: 2021-12-06
Filing date: 2021-12-06
Publication date: 2022-05-17
Anticipated expiration: 2031-12-06

Abstract

A high-torque damping rubber shaft sleeve belongs to the technical field of shaft sleeves; the shaft sleeve is divided into 3 layers including an outer layer, a middle layer and an inner layer; the inner layer is made of metal, the middle layer is made of rubber, and the outer layer is made of metal; 3 layers are fixedly connected with each other; the center of the inner layer is a shaft hole. A plurality of annular grooves are transversely arranged outside the outer layer; a plurality of strip-shaped grooves A are longitudinally arranged outside the outer layer; the inner surface of the outer layer is longitudinally provided with a plurality of strip-shaped bulges A. A plurality of strip-shaped grooves B are longitudinally arranged outside the middle layer; a plurality of bolt holes and a plurality of arc-shaped convex ribs are arranged on the middle layer; a plurality of positioning grooves and a plurality of arc-shaped grooves are arranged below the middle layer. The outside of the inner layer is longitudinally provided with a plurality of strip-shaped grooves C. The utility model has the beneficial effects that: the fluctuation is not large, and the torque meets the requirement.

Description

High-torque damping rubber shaft sleeve

Technical Field

The utility model relates to a shaft sleeve, in particular to a high-torque damping rubber shaft sleeve, and belongs to the technical field of shaft sleeves.

Background

The rubber shaft sleeve is all suitable for household, commercial, film blower, air supply fan and the like; the essential important part is matched between the fan blade and the motor connecting section, and the essential important part is a core part which plays an important role in reducing vibration and noise of the fan blade end when the motor rotates.

The rubber shaft sleeve is a product formed by mixing metal and synthetic rubber which are processed by mixing and injecting glue by a hydraulic vulcanizing machine (200T3RT) through an extrusion die and vulcanizing, and is divided into an inner layer and an outer layer, wherein the inner layer is made of metal, and the outer layer is made of rubber; the prior product has the following problems:

1. the product end jump is more than 0.20mm, the volatility is large and unstable, and the product generates complete machine shake in operation and use;

2. the original product has unreasonable structural design and insufficient torque, the requirement on the service life of the machine type cannot be met, the problem of cracking of the rubber body can occur in use, and after-sale hidden dangers exist.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of large and unstable volatility and insufficient product torque in the prior art, and provides a high-torque damping rubber shaft sleeve which can achieve the purposes of small volatility and torque meeting requirements.

In order to achieve the aim, the utility model adopts the technical scheme that: a high-torque damping rubber shaft sleeve, which is called a shaft sleeve for short; the shaft sleeve is divided into 3 layers including an outer layer, a middle layer and an inner layer; the inner layer is made of metal, the middle layer is made of rubber, and the outer layer is made of metal; 3 layers are fixedly connected with each other; the center of the inner layer is provided with a shaft hole.

A plurality of annular grooves are transversely formed outside the outer layer; a plurality of strip-shaped grooves A are longitudinally formed in the outer surface of the outer layer, and the strip-shaped grooves A are uniformly distributed on the outer surface of the outer layer; the inner surface of the outer layer is longitudinally provided with a plurality of strip-shaped bulges A which are uniformly distributed on the inner surface of the outer layer.

A plurality of strip-shaped grooves B are longitudinally arranged outside the middle layer, and the strip-shaped grooves B are uniformly distributed outside the middle layer; a plurality of bolt holes and a plurality of arc-shaped raised ribs are arranged on the middle layer; the bolt holes and the arc-shaped convex ribs are uniformly distributed in a circular shape on the middle layer; a plurality of positioning grooves and a plurality of arc-shaped grooves are formed below the middle layer; the positioning grooves and the arc-shaped grooves are uniformly distributed in a circular shape below the middle layer.

A plurality of strip-shaped grooves C are longitudinally arranged outside the inner layer, and the strip-shaped grooves C are uniformly distributed outside the inner layer.

The lower surfaces of the 3 layers are on the same surface; the upper surfaces of the middle layer and the outer layer are on the same surface; the upper surface of the inner layer is higher than the upper surface of the middle layer.

2 annular grooves are transversely formed outside the outer layer; 4 strip-shaped grooves A are longitudinally formed outside the outer layer; the inner surface of the outer layer is longitudinally provided with 4 strip-shaped bulges A.

4 strip-shaped grooves B are longitudinally formed outside the middle layer; 4 bolt holes and 4 arc-shaped convex ribs are formed in the middle layer; there are 4 constant head tanks and 4 arc recesses below the middle level.

The outside of the inner layer is longitudinally provided with 8 strip-shaped grooves C.

The 3-layer fixing method is an inner filling type, the inner layer and the outer layer are fixed on a mould, and then rubber is injected between the inner layer and the outer layer to form a middle layer.

Compared with the prior art, the utility model has the beneficial effects that:

1. by adopting the design of the inner and outer metal shaft sleeves, the fluctuation is effectively controlled in the processing, and the end jump value is controlled to be less than or equal to 0.1mm from the original value of more than 0.20mm, so that the jitter problem of the product after running is reduced;

2. the product structure is designed into an inner filling type from an original rubber body opening type, the overall density and the bonding effect of the product after injection are better through design and processing technology, so that the torque is improved, the maximum 80kgf.cm is improved to more than 200kgf.cm, the problem of insufficient torque is solved, and the service life of the product is prolonged.

Drawings

FIG. 1 is a schematic diagram of: front view of the utility model;

FIG. 2 is a diagram of: top view of the utility model;

FIG. 3 is a diagram of: bottom view of the present invention;

FIG. 4 is a diagram of: fig. 2 is a sectional view a-a.

Description of reference numerals: outer 1, annular groove 101, bar recess A102, protruding A103 of bar, middle level 2, bar recess B201, bolt hole 202, protruding muscle 203 of arc, constant head tank 204, arc recess 205, nexine 3, shaft hole 301, bar recess C302.

Detailed Description

The utility model is further described with reference to the following figures and specific examples, which are not intended to be limiting.

As shown in fig. 1 to 4, a high-torque damping rubber bushing, referred to as a bushing for short; the shaft sleeve is divided into 3 layers, including an outer layer 1, a middle layer 2 and an inner layer 3; the inner layer 3 is made of aluminum, the middle layer 2 is made of rubber, and the outer layer 1 is made of aluminum; 3 layers are fixedly connected with each other; the center of the inner layer 3 is provided with a shaft hole 301.

2 annular grooves 101 are transversely formed outside the outer layer 1; 4 strip-shaped grooves A102 are longitudinally formed in the outer surface of the outer layer 1, and the strip-shaped grooves A102 are uniformly distributed in the outer surface of the outer layer 1; the inner surface of the outer layer 1 is longitudinally provided with 4 strip-shaped bulges A103, and the strip-shaped bulges A103 are uniformly distributed on the inner surface of the outer layer 1.

4 strip-shaped grooves B201 are longitudinally formed in the outer surface of the middle layer 2, and the strip-shaped grooves B201 are uniformly distributed in the outer surface of the middle layer 2; 4 bolt holes 202 and 4 arc-shaped convex ribs 203 are formed in the middle layer 2; the bolt holes 202 and the arc-shaped convex ribs 203 are uniformly distributed on the middle layer 2 in a circular shape; 4 positioning grooves 204 and 4 arc-shaped grooves 205 are formed below the middle layer 2; the positioning grooves 204 and the arc-shaped grooves 205 are uniformly distributed in a circular shape below the middle layer 2.

The outer surface of the inner layer 3 is longitudinally provided with 8 strip-shaped grooves C302, and the strip-shaped grooves C302 are uniformly distributed outside the inner layer 3.

The lower surfaces of the 3 layers are on the same surface; the upper surfaces of the middle layer 2 and the outer layer 1 are on the same surface; the upper surface of the inner layer 3 is higher than the upper surface of the middle layer 2.

The 3-layer fixing method is an internal filling type, the inner layer 3 and the outer layer 1 are fixed on a mould, and then rubber is injected between the inner layer 3 and the outer layer 1 to form the middle layer 2.

The above-described embodiments are merely preferred embodiments of the present invention, and general changes and substitutions by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention.

Claims

1. The utility model provides a high moment of torsion damping rubber axle sleeve, axle sleeve for short, its characterized in that: the shaft sleeve is divided into 3 layers including an outer layer, a middle layer and an inner layer; the inner layer is made of metal, the middle layer is made of rubber, and the outer layer is made of metal; 3 layers are fixedly connected with each other; the center of the inner layer is provided with a shaft hole.

2. The high-torque shock-absorbing rubber bushing according to claim 1, wherein: a plurality of annular grooves are transversely formed outside the outer layer; a plurality of strip-shaped grooves A are longitudinally formed in the outer surface of the outer layer, and the strip-shaped grooves A are uniformly distributed on the outer surface of the outer layer; the inner surface of the outer layer is longitudinally provided with a plurality of strip-shaped bulges A which are uniformly distributed on the inner surface of the outer layer.

3. The high-torque shock-absorbing rubber bushing according to claim 1, wherein: a plurality of strip-shaped grooves B are longitudinally arranged outside the middle layer, and the strip-shaped grooves B are uniformly distributed outside the middle layer; a plurality of bolt holes and a plurality of arc-shaped convex ribs are arranged on the middle layer; the bolt holes and the arc-shaped convex ribs are uniformly distributed in a circular shape on the middle layer; a plurality of positioning grooves and a plurality of arc-shaped grooves are formed below the middle layer; the positioning grooves and the arc-shaped grooves are uniformly distributed in a circular shape below the middle layer.

4. The high-torque shock-absorbing rubber bushing according to claim 1, wherein: a plurality of strip-shaped grooves C are longitudinally arranged outside the inner layer, and the strip-shaped grooves C are uniformly distributed outside the inner layer.

5. The high-torque shock-absorbing rubber bushing according to claim 1, wherein: the lower surfaces of the 3 layers are on the same surface; the upper surfaces of the middle layer and the outer layer are on the same surface; the upper surface of the inner layer is higher than the upper surface of the middle layer.

6. The high-torque shock-absorbing rubber bushing as set forth in claim 2, wherein: 2 annular grooves are transversely formed outside the outer layer; 4 strip-shaped grooves A are longitudinally formed outside the outer layer; the inner surface of the outer layer is longitudinally provided with 4 strip-shaped bulges A.

7. The high-torque shock-absorbing rubber bushing as set forth in claim 3, wherein: 4 strip-shaped grooves B are longitudinally formed outside the middle layer; 4 bolt holes and 4 arc-shaped convex ribs are formed in the middle layer; there are 4 constant head tanks and 4 arc recesses below the middle level.

8. The high-torque shock-absorbing rubber bushing according to claim 4, wherein: the outside of the inner layer is longitudinally provided with 8 strip-shaped grooves C.