CN212535803U

CN212535803U - Small-end bush of automobile engine connecting rod

Info

Publication number: CN212535803U
Application number: CN202020853084.4U
Authority: CN
Inventors: 丁敏奇; 孙彩红
Original assignee: Sanhe Meiye Auto Parts Co ltd
Current assignee: Sanhe Meiye Auto Parts Co ltd
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2021-02-12
Anticipated expiration: 2030-05-20

Abstract

The utility model discloses an automobile engine connecting rod microcephaly bush, including the connecting rod microcephaly, be provided with the bush body in the connecting rod microcephaly, and be provided with the location breach on the bush body, bush body lateral wall is provided with the oil inlet, and bush body inside wall is provided with first oil groove and second oil groove, is linked together through the second oil groove between the first oil groove simultaneously. This automobile engine connecting rod microcephaly bush, bush body inside wall is provided with two first oil grooves, and be linked together through the second oil groove between two first oil grooves, this internal lubricating oil storage capacity of bush has been increased, avoid causing the use of lubricated harmful effects generator, be provided with round platform form oil inlet on the bush body, make the lubricating oil that splashes enter into the inlet port more easily, make lubricated effect better, round platform form inlet port big-end-in-outer simultaneously makes lubricating oil enter into the second oil groove difficult outflow again, the setting of location breach is convenient for the interference fit pressure equipment of bush body and connecting rod microcephaly in addition.

Description

Small-end bush of automobile engine connecting rod

Technical Field

The utility model relates to a relevant technical field of engine connecting rod specifically is a car engine connecting rod microcephaly bush.

Background

The engine connecting rod is used for connecting a piston and a crankshaft, an engine connecting rod small-end bush is an important part of a connecting rod assembly, the engine connecting rod small-end bush is pressed in a connecting rod small-end hole in an interference fit mode and supports the swinging motion of an engine connecting rod, the design structure of the common engine connecting rod small-end bush is simple, the material strength is sufficient, the bearing strength is high, and certain lubricating performance is required, most of the lubricating oil of the engine connecting rod small-end bush and a piston pin is lubricated by splash lubrication, lubricating oil drops splashed when the engine operates are used, lubricating oil can enter a clearance fit position of the piston pin and the engine connecting rod small-end bush in continuous motion of the connecting rod and forms an oil film for lubrication, but for a common gasoline engine, the common connecting rod small-end bush which is simple in structure and does not have an oil groove is mostly adopted, the oil film can only be formed by the clearance fit, the quantity of stored lubricating oil is limited, so that poor lubrication is easily caused, and the normal operation of the generator is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an automobile engine connecting rod microcephaly bush to solve the simple structure who proposes among the above-mentioned background art and do not have the ordinary connecting rod microcephaly bush of oil groove, can only rely on clearance fit to form the oil film, nevertheless the piston pin is very little with the fit clearance of connecting rod microcephaly bush, and the lubricated oil mass of storage is limited, causes lubricated harmfully easily, influences the normal moving problem of generator.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an automobile engine connecting rod microcephaly bush, includes the connecting rod microcephaly, be provided with the bush body in the connecting rod microcephaly, and be provided with the location breach on the bush body, bush body lateral wall is provided with the oil inlet, and bush body inside wall is provided with first oil groove and second oil groove, is linked together through the second oil groove between the first oil groove simultaneously.

Preferably, the bush body is including buckle and bayonet socket, and the buckle setting is in bush body one end, and the bush body is kept away from buckle one end and is provided with the bayonet socket simultaneously.

Preferably, the positioning notches are symmetrically arranged relative to the central line of the bushing body, and two groups of positioning notches are arranged.

Preferably, the oil inlet is round table-shaped, and the size of the oil inlet is large outside and small inside.

Preferably, the number of the first oil grooves is two, and the two first oil grooves are communicated with each other through the second oil groove.

Compared with the prior art, the beneficial effects of the utility model are that: the small-end bush of the connecting rod of the automobile engine,

(1) the two first oil grooves are formed in the inner side wall of the bushing body and communicated with each other through the second oil groove, so that the storage capacity of lubricating oil in the bushing body is increased, and the phenomenon that the use of the generator is adversely affected due to insufficient lubricating oil is avoided;

(2) be provided with round platform form oil inlet on the bush body for the lubricating oil that splashes enters into the inlet port more easily, makes lubricated effect better, and the round platform form inlet port of outer big-end-up makes lubricating oil enter into the second oil groove in be difficult for flowing again simultaneously, and the setting of location breach is convenient for the interference fit pressure equipment of bush body and connecting rod microcephaly in addition.

Drawings

FIG. 1 is a schematic structural view of a connecting rod small end and a bushing body of the present invention;

FIG. 2 is a schematic view of the expanded structure of the bushing body of the present invention;

fig. 3 is a schematic view of the closed structure of the bushing body of the present invention.

In the figure: 1. connecting rod microcephaly, 2, bush body, 201, buckle, 202, bayonet socket, 3, location breach, 4, oil inlet, 5, first oil groove, 6, second oil groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a connecting rod small end bushing of an automobile engine is disclosed, as shown in figure 1, figure 2 and figure 3, a bushing body 2 is arranged in a connecting rod small end 1, a positioning notch 3 is arranged on the bushing body 2, the bushing body 2 comprises a buckle 201 and bayonets 202, the buckle 201 is arranged at one end of the bushing body 2, meanwhile, the bayonet 202 is arranged at one end, away from the buckle 201, of the bushing body 2, the bushing body 2 is formed by winding and processing flat plate materials through the buckle 201 and the bayonet 202, the positioning notches 3 are symmetrically arranged about a central line of the bushing body 2, two groups of positioning notches 3 are arranged, the positioning notches 3 are convenient for the bushing body 2 to be pressed into the connecting rod small end 1 through interference fit, an oil inlet 4 is arranged on the side wall of the bushing body 2, a first oil groove 5 and a second oil groove 6 are arranged on the inner side wall of the bushing body 2, meanwhile, the first, and the size of oil inlet 4 is big in the outside, and little round platform form oil inlet 4 makes the lubricating oil that splashes enter into in the second oil groove 6 more easily and be difficult for flowing out again in the big in the outside, and first oil groove 5 is provided with two, and is linked together through second oil groove 6 between two first oil grooves 5, and first oil groove 5 and second oil groove 6 increase the lubricating oil storage of bush body 2.

The working principle is as follows: when the automobile engine connecting rod small-end bushing is used, a flat plate is processed into the first oil groove 5 and the second oil groove 6, the bushing body 2 is processed by winding the buckle 201 and the bayonet 202, under the action of the positioning gap 3, the bushing body 2 is conveniently pressed into the connecting rod small head 1 through interference fit, a circular truncated cone-shaped oil inlet 4 is arranged on the bushing body 2, when in use, the splashed lubricating oil can enter the second oil groove 6 more easily, so that the lubricating effect is better, meanwhile, the circular truncated cone-shaped oil inlet hole 4 with the large outer part and the small inner part ensures that the lubricating oil enters the second oil groove 6 and is difficult to flow out again, the first oil groove 5 and the second oil groove 6 increase the storage of the lubricating oil of the bushing body 2, so that the shortage of the lubricating oil is avoided, thereby causing lubrication to adversely affect the use of the generator and is not described in detail in this specification as being within the skill of those in the art.

The terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for ease of description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the scope of the invention.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides an automobile engine connecting rod microcephaly bush, includes connecting rod microcephaly (1), its characterized in that: be provided with bush body (2) in connecting rod microcephaly (1), and be provided with location breach (3) on bush body (2), bush body (2) lateral wall is provided with oil inlet (4), and bush body (2) inside wall is provided with first oil groove (5) and second oil groove (6), is linked together through second oil groove (6) between first oil groove (5) simultaneously.

2. The connecting rod small end bushing of an automobile engine as set forth in claim 1, wherein: the bushing body (2) comprises a buckle (201) and a bayonet (202), the buckle (201) is arranged at one end of the bushing body (2), and the bayonet (202) is arranged at one end, far away from the buckle (201), of the bushing body (2).

3. The connecting rod small end bushing of an automobile engine as set forth in claim 1, wherein: the positioning notches (3) are symmetrically arranged about the central line of the bushing body (2), and two groups of positioning notches (3) are arranged.

4. The connecting rod small end bushing of an automobile engine as set forth in claim 1, wherein: the oil inlet (4) is in a round table shape, and the size of the oil inlet (4) is large outside and small inside.

5. The connecting rod small end bushing of an automobile engine as set forth in claim 1, wherein: the two first oil grooves (5) are arranged and communicated with each other through the second oil groove (6) between the two first oil grooves (5).