CN220850370U

CN220850370U - Needle roller bearing of folding knife

Info

Publication number: CN220850370U
Application number: CN202322585121.4U
Authority: CN
Inventors: 陶冬宾; 陶怡彤
Original assignee: Xinxiang Honghang Machinery Equipment Co ltd
Current assignee: Xinxiang Honghang Machinery Equipment Co ltd
Priority date: 2023-09-21
Filing date: 2023-09-21
Publication date: 2024-04-26
Anticipated expiration: 2033-09-21

Abstract

The utility model relates to the technical field of bearings, in particular to a folding knife needle bearing, which comprises a bearing retainer, a clamping ring and a plurality of needle rollers, wherein the needle rollers are uniformly distributed on the circumference, the outer surfaces of the needle rollers are all rotationally connected with the inside of the bearing retainer, the outer part of the clamping ring is clamped with the inside of the bearing retainer, an inner hole is formed in one side of the bearing retainer, and a plurality of rotating grooves are formed in the outer surface of the bearing retainer. The utility model has the advantages that: according to the utility model, the rolling pin is adopted to replace the rolling ball, higher stability can be maintained while the product is kept to rotate smoothly, the bearing retainer with the rotating groove, which is processed by the numerical control turning and milling compound machine tool, is matched with the tightening function of the clamping ring, and the assembled rolling pin bearing can be integrated, so that the rolling pin in the bearing can not be scattered and lost during assembly and disassembly of the assembled product or the later maintenance product, and the working efficiency is improved.

Description

Needle roller bearing of folding knife

Technical Field

The utility model relates to the technical field of bearings, in particular to a needle roller bearing of a folding knife.

Background

In the existing folding knife, a bearing is arranged between the knife body and the knife handle, so that friction between the knife body and the knife handle is reduced when the knife body is rotated, and the rotating lubrication degree is increased; however, most of the existing folding knives adopt ball bearings, when in use, the contact surface of a single row of ball bearings is too small, the stability is poor, and the copper sheet retainer is easy to deform and wear, so that the balls fall off and are lost, the double row or multiple rows of ball bearing retainers are axial through holes, the balls are easy to scatter and lose, and the use is inconvenient.

In this regard, the present utility model provides a needle roller bearing for a folding knife.

Disclosure of utility model

The object of the present utility model is to solve at least one of the technical drawbacks.

Therefore, an object of the present utility model is to provide a needle roller bearing for a folding knife, which solves the problems mentioned in the background art and overcomes the disadvantages of the prior art.

In order to achieve the above purpose, an embodiment of an aspect of the present utility model provides a folding knife needle bearing, including a bearing holder, a snap ring, and a plurality of needle rollers, wherein the plurality of needle rollers are uniformly distributed along a circumference, outer surfaces of the plurality of needle rollers are rotatably connected to an inner portion of the bearing holder, an outer portion of the snap ring is clamped to the inner portion of the bearing holder, an inner hole is formed in one side of the bearing holder, and a plurality of rotating grooves are formed in an outer surface of the bearing holder.

By any of the above schemes, preferably, one side of each of the plurality of rotating grooves is provided with a through hole, and one side of each of the plurality of through holes penetrates into the inner hole.

The technical effect achieved by adopting the scheme is as follows: the needle roller is convenient to detach.

By any of the above schemes, it is preferable that the size of the needle roller is adapted to the size of the rotating groove, and the outer surface of the needle roller is rotatably connected to the inside of the corresponding rotating groove.

By any of the above schemes, preferably, the outer surface of the bearing retainer is provided with an annular groove, the shape and the size of the annular groove are matched with those of the snap ring, and the outer surface of the snap ring is clamped in the annular groove.

The technical effect achieved by adopting the scheme is as follows: the rolling pin is limited, so that falling off is avoided.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

According to the utility model, the rolling pin is adopted to replace the rolling ball, higher stability can be maintained while the product is kept to rotate smoothly, the bearing retainer with the rotating groove, which is processed by the numerical control turning and milling compound machine tool, is matched with the tightening function of the clamping ring, and the assembled rolling pin bearing can be integrated, so that the rolling pin in the bearing can not be scattered and lost during assembly and disassembly of the assembled product or the later maintenance product, thereby improving the working efficiency and ensuring the practicability of the folding knife rolling pin bearing.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic diagram of a structure according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of an explosive structure according to an embodiment of the present utility model;

fig. 3 is a schematic structural view of a cage according to an embodiment of the present utility model.

In the figure: 1-bearing retainer, 11-inner hole, 12-rotating groove, 13-through hole, 14-ring groove, 2-snap ring and 3-needle roller.

Detailed Description

Examples: as shown in fig. 1 to 3, the folding knife needle bearing comprises a bearing retainer 1, a snap ring 2 and a plurality of needle rollers 3, wherein the needle rollers 3 are uniformly distributed in circumference so as to ensure the stability of stress, the folding knife needle bearing is installed on the folding knife in the same installation mode as the existing ball bearing, the details are not repeated here, the outer surfaces of the needle rollers 3 are rotationally connected to the inner part of the bearing retainer 1, the outer part of the snap ring 2 is clamped to the inner part of the bearing retainer 1, an inner hole 11 is formed in one side of the bearing retainer 1, and a plurality of rotating grooves 12 are formed in the outer surface of the bearing retainer 1.

One side of each of the plurality of rotating grooves 12 is provided with a through hole 13, one side of each of the plurality of through holes 13 penetrates through the inner hole 11, and when the bearing retainer 1 needs to be disassembled for later maintenance or replacement, the needle roller 3 can be ejected out by the aid of the through holes 13 by using an existing tool, so that convenience is brought to the disassembly.

The size of the needle roller 3 is matched with the size of the rotary groove 12, and the outer surface of the needle roller 3 is rotationally connected to the inner part of the corresponding rotary groove 12.

The outer surface of the bearing retainer 1 is provided with an annular groove 14, the shape and the size of the annular groove 14 are matched with those of the snap ring 2, the outer surface of the snap ring 2 is clamped in the annular groove 14, the bearing retainer 1 can simultaneously take into account the function of a bushing, and the bearing retainer 1 can be directly replaced if the bearing retainer is worn in later use.

Further, the utility model has the following equivalent and optimal scheme: the diameter of the inner hole 11 and the outer circle of the bearing retainer 1 and the number of the rotating grooves 12 and whether the steps are needed in the length direction can be changed according to the actual requirements of products so as to meet the assembly requirements of similar products, the bearing retainer 1 adopts a numerical control turning and milling compound machine tool to machine the rotating grooves 12 on the bearing retainer 1, all machining procedures can be completed after one-time clamping, the shape and position tolerance is met, and the rolling needle 3 in the bearing is not scattered and lost during assembly and disassembly no matter the product is assembled or maintained later, so that the working efficiency is improved.

The working principle of the folding knife needle roller bearing is as follows:

1) The folding knife needle bearing consists of a bearing retainer 1, a clamping ring 2 and a needle roller 3, when in installation, the needle roller 3 is firstly arranged in a rotating groove 12 of the bearing retainer 1, and then the clamping ring 2 is arranged in an annular groove 14 outside the bearing retainer 1, so that the folding knife needle bearing can be assembled;

2) The bearing retainer 1 can take the function of a bushing into consideration, the bearing retainer 1 can be directly replaced when worn in later use, the retainer ring 12 is removed when the bearing retainer needs to be replaced, the needle roller 3 can be taken out, and if the needle roller 3 which is difficult to take out exists, the needle roller 3 can be ejected out through the existing thimble insertion through hole 13.

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

According to the utility model, the rolling needle 3 is adopted to replace a rolling ball, higher stability can be maintained while the product is kept to rotate smoothly, the bearing retainer 1 with the rotary groove 12, which is processed by a numerical control turning and milling compound machine tool, is matched with the tightening function of the clamping ring 2, and the assembled rolling needle bearing can be integrated, so that the rolling needle in the bearing can not be scattered and lost during assembly and disassembly of the assembled product or the later maintenance product, the working efficiency is improved, and the practicability of the folding knife rolling needle bearing is ensured.

Claims

1. Folding knife needle bearing, its characterized in that: including bearing holder (1), snap ring (2) and a plurality of kingpin (3), a plurality of kingpin (3) are circumference evenly distributed, a plurality of the surface of kingpin (3) is all rotated and is connected in the inside of bearing holder (1), the outside joint of snap ring (2) is in the inside of bearing holder (1), hole (11) have been seted up to one side of bearing holder (1), a plurality of rotation grooves (12) have been seted up to the surface of bearing holder (1).

2. The folding knife needle bearing according to claim 1, wherein: one side of each of the rotating grooves (12) is provided with a through hole (13), and one side of each of the through holes (13) penetrates into the inner hole (11).

3. The folding knife needle bearing according to claim 2, wherein: the size of the needle roller (3) is matched with that of the rotating groove (12), and the outer surface of the needle roller (3) is rotationally connected to the inside of the corresponding rotating groove (12).

4. A folding knife needle bearing according to claim 3, characterized in that: an annular groove (14) is formed in the outer surface of the bearing retainer (1), the shape and the size of the annular groove (14) are matched with those of the clamping ring (2), and the outer surface of the clamping ring (2) is clamped in the annular groove (14).