Low-noise plastic bearing

Abstract

The utility model provides a low-noise plastic bearing and belongs to the technical field of machinery. The problem of poor stability in the prior art is solved. The low-noise plastic bearing comprises a cylindrical barrel made of a plastic material, the barrel comprises a framework, an inner coating layer and an outer coating layer, the framework is cylindrical and is provided with a plurality of through positioning holes, the inner coating layer is cylindrical and is fixedly connected in the framework, and the outer coating layer is fixedly connected in the framework. The outer coating layer is cylindrical and is sleeved on the framework, a connecting section is arranged between the inner coating layer and the outer coating layer, the connecting section is arranged at the positioning hole in a penetrating manner, and the outer coating layer and the inner coating layer are fixedly connected by the connecting section. The low-noise plastic bearing is high in stability.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery and relates to a low-noise plastic bearing. Background Art

[0002] The working surfaces of plastic sliding bearings generally have self-lubricating functions; plastic sliding bearings are generally made of engineering plastics with relatively good performance.

[0003] Plastic sliding bearings have the following characteristics:

[0004] 1. Plastic bearings are made of lubricating materials as a whole and have a long service life;

[0005] 2. Plastic bearings will not rust during use and are corrosion-resistant, while metal bearings are prone to rust and cannot be used in chemical liquids;

[0006] 3. Plastic bearings are lighter than metal bearings, which is more suitable for modern lightweight design trends;

[0007] 4. The manufacturing cost of plastic bearings is lower than that of metal bearings; plastic bearings are made by injection molding and are more suitable for mass production.

[0008] However, existing plastic bearings are usually of an integrated structure, resulting in insufficient strength of the plastic bearings. Summary of the invention

[0009] The purpose of the utility model is to provide a low-noise plastic bearing with high strength and compact structure in view of the above problems existing in the prior art.

[0010] The purpose of the utility model can be achieved through the following technical solutions:

[0011] A low-noise plastic bearing comprises a cylindrical body made of plastic material, characterized in that the cylindrical body comprises a frame, an inner covering layer and an outer covering layer, the frame is cylindrical and has a plurality of penetrating positioning holes on the frame, the inner covering layer is cylindrical and is fixedly connected to the frame, the outer covering layer is cylindrical and is sleeved on the frame, and a connecting section is provided between the inner covering layer and the outer covering layer, the connecting section is passed through the positioning hole and the connecting section fixes the outer covering layer to the inner covering layer.

[0012] The low-noise plastic bearing creatively arranges an inner coating layer on the inner side of a cylindrical frame and an outer coating layer on the outer side of the frame. The inner coating layer and the outer coating layer are fixedly connected by a connecting section, thereby ultimately ensuring that the inner coating layer and the outer coating layer can be stably connected to the frame.

[0013] The inner coating layer and the outer coating layer play a role of self-lubrication, and the skeleton plays a role of strengthening the bearing strength.

[0014] In the above-mentioned low-noise plastic bearing, the frame end also has a disc-shaped positioning plate, the outer edge of the positioning plate extends out of the outer coating layer, the inner edge of the positioning plate protrudes out of the inner side of the frame, and the inner coating layer is flush with the inner edge of the positioning plate.

[0015] The positioning plate has two functions:

[0016] First, limit the end of the outer coating layer;

[0017] Secondly, the positioning plate acts as a flange, which can conveniently and stably connect the bearing to the corresponding frame.

[0018] In the above-mentioned low-noise plastic bearing, the inner edge of the positioning plate is provided with an annular recessed positioning groove, and the end of the inner coating layer is embedded in the positioning groove.

[0019] After the end of the inner covering layer is embedded in the positioning groove, the connection between the frame and the inner covering layer can be made more stable.

[0020] In the above-mentioned low-noise plastic bearing, the outer coating layer, the inner coating layer and the connecting section are an integrated structure.

[0021] The liquid raw material is injected onto the frame by using the existing injection molding process, and after the liquid raw material is solidified, an outer coating layer stably coating the outer side of the frame and an inner coating layer coating the inner side of the frame are formed.

[0022] In the above-mentioned low-noise plastic bearing, the number of the positioning holes is several, and the positioning holes are evenly distributed along the circumference of the skeleton. The circumferentially evenly distributed positioning holes form a positioning unit. The number of the positioning units is several, and the positioning units are evenly distributed along the axial direction of the skeleton.

[0023] Since the positioning holes correspond to the connecting sections one by one, the multiple connecting sections can eventually connect the outer covering layer and the inner covering layer stably together.

[0024] In the above-mentioned low-noise plastic bearing, the positioning hole is a tapered hole, the large-size end of the positioning hole is located inside the frame, and the above-mentioned connecting section matches the positioning hole.

[0025] Such a structure can connect the inner and outer covering layers more stably.

[0026] In the above-mentioned low-noise plastic bearing, the thicknesses of the inner coating layer, the outer coating layer and the frame are all the same.

[0027] Under the premise of ensuring the self-lubrication and strength of the bearing, the structure can also effectively improve its structural compactness.

[0028] Compared with the prior art, the low-noise plastic bearing has a skeleton that improves the bearing strength, and the inner and outer coatings effectively improve the self-lubricating properties of the bearing. Therefore, the entire bearing has relatively high strength and good self-lubricating properties, and its stability is relatively high.

[0029] Since the inner and outer sides of the bearing are made of plastic material, the characteristics of the plastic material itself can make the entire bearing have low noise characteristics during use.

[0030] At the same time, the skeleton is located inside the bearing, and its structure is relatively compact, so it has high use value. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the cross-sectional structure of the low-noise plastic bearing.

[0032] Figure 2 It is a structural schematic diagram of the skeleton in the low-noise plastic bearing.

[0033] In the figure, 1, skeleton; 1a, positioning hole; 2, inner covering layer; 3, outer covering layer; 4, connecting section; 5, positioning plate; 5a, positioning groove. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly mounted on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it may be directly fixed on the other component or there may be a central component at the same time.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more related listed items.

[0037] like Figure 1As shown, the low-noise plastic bearing includes a cylindrical body made of plastic material, the cylindrical body includes a skeleton 1, an inner coating layer 2 and an outer coating layer 3, the skeleton 1 is cylindrical and has a plurality of penetrating positioning holes 1a on the skeleton 1, the inner coating layer 2 is cylindrical and is fixedly connected to the skeleton 1, the outer coating layer 3 is cylindrical and is sleeved on the skeleton 1, and a connecting section 4 is provided between the inner coating layer 2 and the outer coating layer 3, the connecting section 4 is penetrated at the positioning hole 1a and the connecting section 4 fixes the outer coating layer 3 to the inner coating layer 2.

[0038] like Figure 1 and Figure 2 As shown, the frame 1 also has a disc-shaped positioning plate 5 at the end, the outer edge of the positioning plate 5 extends out of the outer coating layer 3, the inner edge of the positioning plate 5 protrudes from the inner side of the frame 1, and the inner coating layer 2 is flush with the inner edge of the positioning plate 5.

[0039] The inner edge of the positioning plate 5 is provided with an annular recessed positioning groove 5a, and the end of the inner coating layer 2 is embedded in the positioning groove 5a.

[0040] The outer coating layer 3, the inner coating layer 2 and the connecting section 4 are an integrated structure.

[0041] There are several positioning holes 1a, which are evenly distributed along the circumference of the skeleton 1 . The circumferentially evenly distributed positioning holes 1a form a positioning unit. There are several positioning units, which are evenly distributed along the axial direction of the skeleton 1 .

[0042] The positioning hole 1a is a conical hole, and the large-size end of the positioning hole 1a is located inside the frame 1. The connecting section 4 matches the positioning hole 1a.

[0043] The thicknesses of the inner coating layer 2, the outer coating layer 3 and the skeleton 1 are all the same.

[0044] The low-noise plastic bearing creatively arranges an inner coating layer on the inner side of a cylindrical frame and an outer coating layer on the outer side of the frame. The inner coating layer and the outer coating layer are fixedly connected by a connecting section, thereby ultimately ensuring that the inner coating layer and the outer coating layer can be stably connected to the frame.

[0045] The inner coating layer and the outer coating layer play a role of self-lubrication, and the skeleton plays a role of strengthening the bearing strength.

[0046] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. As long as they are within the spirit of the present invention, appropriate changes and modifications to the above embodiments are within the scope of protection required by the present invention.

Claims

1. A low-noise plastic bearing, comprising a cylindrical body made of plastic material, characterized in that: The cylinder body includes a skeleton, an inner covering layer and an outer covering layer. The skeleton is cylindrical and has a plurality of penetrating positioning holes on the skeleton. The inner covering layer is cylindrical and is fixedly connected to the skeleton. The outer covering layer is cylindrical and is sleeved on the skeleton. There is also a connecting section between the inner covering layer and the outer covering layer. The connecting section is passed through the positioning hole and the connecting section fixes the outer covering layer to the inner covering layer.

2. The low-noise plastic bearing according to claim 1, characterized in that: The frame end is also provided with a disc-shaped positioning plate, the outer edge of the positioning plate extends out of the outer covering layer, the inner edge of the positioning plate protrudes out of the inner side of the frame, and the inner covering layer is flush with the inner edge of the positioning plate.

3. The low-noise plastic bearing according to claim 2, characterized in that: The inner edge of the positioning plate is provided with an annular concave positioning groove, and the end of the inner coating layer is embedded in the positioning groove.

4. The low-noise plastic bearing according to claim 3, characterized in that: The outer coating layer, the inner coating layer and the connecting section are an integrated structure.

5. The low-noise plastic bearing according to claim 4, characterized in that: The number of the positioning holes is several, and the positioning holes are evenly distributed along the circumference of the skeleton. The circumferentially evenly distributed positioning holes form a positioning unit. The number of the positioning units is several, and the positioning units are evenly distributed along the axial direction of the skeleton.

6. The low-noise plastic bearing according to claim 5, characterized in that: The positioning hole is a conical hole, the large-size end of the positioning hole is located inside the frame, and the connecting section matches the positioning hole.

7. The low-noise plastic bearing according to claim 6, characterized in that: The thicknesses of the inner coating layer, the outer coating layer and the skeleton are all the same.

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